Dry compacted NK fertilizer from ammonium sulphate and potassium chloride

1. Scope and Applicability

This method covers bulk solid NK composite granules produced by dry mixing purchased ammonium sulphate and potassium chloride particles, roller-pressure compaction/briquetting, crushing, sizing/polishing, dry classification, internal fines return, dry dust capture, final acceptance, storage and bulk dispatch. Each finished granule contains the two feed components; a mere physical mixture of separate finished granules is outside this method. Sulfur in ammonium sulphate is retained and reported; “NK” describes the N/P/K grouping and does not assert absence of secondary nutrient sulfur. The route distinction follows BREF §7.2.1; Toray JP2019043797A describes the specific AS/KCl compression, sizing and recycling route, and the equipment-maker technical note independently explains the dry unit operations. No cited case fixes recipe, particle size, pressure, speed, density, strength, moisture, yield, energy or emissions for a future plant.

Exclude potassium nitrate, intentional phosphorus/pesticide addition, organic formulations, other feed chemistries, liquid NK, wet/binder-assisted granulation, added process humidification, thermal drying, chemical synthesis and on-site coating. Incidental feed moisture/conditioning remains part of supplied material and must be characterised; incompatibility or real reaction requires review. Purchased feeds retain their actual upstream routes and burdens. Ancillary contained cleaning and pressure-circuit maintenance are included when real. The maker's diagram includes optional humidification/coating: these are outside the selected dry uncoated route, not presumed absent at every plant. Its broad low-pollution claims prove no zero release. Any observed additional fuel, reagent, packaging, maintenance material, transport or release requires its own atomic row, method and evidence before dataset completion.

2. Product Category Identity

Field	Value
canonical_pcr_id	pcr.other-transportable-goods-except-metal-products-machinery-and-equipment.basic-chemicals.fertilizers-containing-two-nutrients-nitrogen-and-potassium-other-than-potassium-nitrate
classification_refs	CPC 3.0 34647; proposed narrower subset, independent mapping acceptance pending
covered_products	Binderless dry roller-compacted AS/KCl solid composite granules, no intentional P or pesticide addition; sulfur retained
excluded_products	KNO3, separate-granule blends, wet/binder/coated/liquid routes and other feed chemistries
representative_product	One actual accepted AS/KCl NK SKU with measured composition; no prescribed grade
production_route	Dry mixing → roller compaction → crushing/sizing → classification and fines return → acceptance/storage/bulk loading
market_state	Net bulk fertilizer at plant gate, actual retained moisture/impurities included; no delivery sacks

3. Reference Flow

Field	Value
What	Supply a solid composite-granule fertilizer containing N and K, excluding potassium nitrate
How much	1 kg accepted net supplied bulk product
How well	Declared actual N and K/K2O-equivalent assays, sulfur, moisture, homogeneity, size, hardness/attrition, storage stability and agreed acceptance
How long or cycle	One complete manufacturing/storage period through plant-gate release; no field response or agronomic lifetime claim
reference_flow_link	nk_product

Field	Value
Reference amount	1
Reference product flow	Fertilizers containing two nutrients: nitrogen and potassium, other than potassium nitrate 1dfc674e-e405-47ee-8abd-b118ec240fa5
Reference flow property	Mass 93a60a56-a3c8-11da-a746-0800200b9a66
Reference unit group	Units of mass 93a60a57-a4c8-11da-a746-0800200c9a66
Reference unit	kg
Required qualifiers	Actual SKU and complete feed recipe; AS/KCl grades and supplier upstream routes; whole supplied mass and constituent assays; no intentional P/pesticide/KNO3; N chemical forms and total N; K versus K2O reporting and assay methods; S and Cl; moisture and free acidity; feed/product size distributions; compression/crushing/sizing and recycle records; hardness/attrition/homogeneity and storage acceptance; bulk delivery; site and period; final gate B; feed/WIP/finished-stock boundaries and carried burdens; native electricity CN/voltage and supplier references; KCl/oil volume conventions; water/air measurements; waste destinations; allocation/capital scope

Declare all qualifiers in actual dataset metadata, process notes or reference-flow comments. The reference is supplied-product mass, not a nutrient-as-N/K functional unit and not proof of agronomic equivalence.

4. Measurement and Unit Rules

rule_id	Applies to	Required property	Required unit	Rule
net_product	nk_product	Mass	kg	B is the unique net newly completed accepted bulk product crossing the final release gate during the period. Weigh gross/tare with calibrated scales; exclude already completed opening-stock resale, internal return passes, discarded off-grade and any containers. Count each finally accepted lot once. Record actual moisture, not a hypothetical dry fertilizer.
period_pool	all inventory rows	Consistent native property	per 1 kg reference flow	Retain the complete same SKU/state/route raw production pool including start/stop, failed/zero-output batches, cleaning, rework, feed/WIP/stock changes and carried burdens. Convert raw units then attribute burdens and divide once by positive B. If total B=0, retain totals without a normalized result.
feed_basis	feed_as; feed_kcl; nk_product	Mass	kg	Whole supplied material is the exchange; N, K, K2O, S, Cl, moisture and conditioning are measured subledgers. K2O is a reporting equivalent, not an actual oxide reagent. Preserve elemental and oxide bases with documented molar conversion; do not count constituent water or active salts twice.
provider_basis	feed_kcl; hydraulic_oil; electricity; cleaning_water	Native reference property	native unit	Separate physical identity from supplier background quantity. For Volume/m3 define solid/bulk/liquid basis, packing, temperature, moisture and measured compatible density; native secondary property ratios supply no density. Match electricity CN/<1kV/user mix; other supplies need compatible verified links.
air_basis	pm25; pm2510; pm10plus; ammonia_air; water_vapour	Mass	kg	Use compatible concentration times already integrated gas volume, or integrate concentration times gas-flow rate over time. Never multiply integrated volume by time again. Preserve wet/dry, normal/actual, temperature, pressure and detection basis; no overlapping PM total and bins.

5. System Boundary

Boundary Abstraction

Field	Value
declared_starting_condition	Purchased AS/KCl particles, actual hydraulic-fluid formulation and cleaning water at receipt; metered delivered electricity
starting_condition_role	Foreground upstream-product interface, not a cradle-to-gate cut-off
product_classification_scope	Only the dry binderless uncoated AS/KCl composite-granule subset of NK excluding KNO3
recursive_input_rule	External same-category material requires measured quantity, history and compatible provider; internal mixture/compacts/fines remain equal two-sided transfers, no second purchase or credit
upstream_dataset_requirement	Link actual feed manufacture, conditioning, utilities, maintenance materials, inbound transport and external waste treatment; disclose missing providers, do not erase burdens
disclosure	Site/period, complete stage coverage, stock/WIP/burden carryover, capital and transport boundaries, exclusions, sampling, grade and provider basis

rule_id	Applies to	Rule	source_ids
boundary_stages	compact	Include actual reception, feed preparation, weighing/mixing, force feeding, roller hydraulics, crushing, sizing, classification, all recirculation passes, dust control, storage, bulk loading and final release. Aggregate one foreground unit while retaining separate stage records.	toray-nk-compaction-2019; sahut-compaction-1999
boundary_actual	all inventory rows	No intentional binder/water/coating/thermal route is modelled. Ancillary contained cleaning and maintenance remain actual exchanges. Additional observed exchanges or chemical transformations require source-supported atomic extension and review; an exclusion cannot hide an operated stage.	eu-jrc-lvic-aaf-2007; toray-nk-compaction-2019
boundary_capital	compact	Declare actual capital/equipment scope and any exclusion rationale with sensitivity. If included, retain measured asset quantity, materials, service period, capacity and allocation separately from operational service; no fictitious per-kg machine mass or default life. External transport and treatment cannot be implied by feed identity.	sahut-compaction-1999

6. Process Inventory Structure

Process Map

process_id	process_name	inclusion	inclusion_condition	role	quantitative_reference
compact	Receipt, dry mixing, compaction, crushing/sizing/classification, recycle/dust control, storage and bulk dispatch	required	Actual binderless dry AS/KCl route; auxiliaries conditional on operation	foreground	1 kg accepted net bulk NK product

Physical stages: receipt → feed preparation/mixing → roller compaction → crushing/sizing → classification → acceptance/storage/bulk delivery. Fines, oversize and actual rework return to their observed destinations within this unit, each pass measured independently; transfer ends retain equal mass and carried burdens, with no intermediate reference-product export.

Process: Dry NK compaction and delivery (compact)

Inputs

Product flows

Ammonium sulphate (feed_as)

Purchased solid ammonium sulphate particles, not ammonium persulphate, aqueous slurry or nitrogen-equivalent mass. Record the complete supplied solid including moisture and impurities, actual N/S assay, free acidity, size distribution and supplier manufacture. The broad finished-product native record imposes no geography or synthesis route; do not infer one from another AS record or transplant the patent caprolactam example.

• Selected flow: Ammonium sulphate 7f128b59-9df7-4b5d-ad0f-00103b916cf7
• Flow property / unit: Mass / kg
• Amount rule: Collect the actual attributable complete-period quantity using cp_feed; report per 1 kg reference flow only with positive B. No default amount.
• Value mode: foreground_record
• Specificity: site_specific
• Normalization basis: per 1 kg reference flow
• Basis kind: reference_flow
• Evidence kind: collected_record
• Collection protocol: cp_feed
• Sources: toray-nk-compaction-2019; sahut-compaction-1999

Potassium chloride (feed_kcl)

Purchased fertilizer-grade KCl particles, CAS 7447-40-7, including supplied conditioning and moisture. Retain measured supplied kg for physical K/Cl balances. Native reference is Volume/m3; retain independently measured compatible supplier volume, solid/bulk convention, packing, moisture, temperature and density. Unspecified provider volume leaves background linkage incomplete. The English comment describes sylvite/brine production; its Chinese mineral-word mistranslation does not change the consistent KCl name/CAS/classification. No specific geography, nutrient grade or density is encoded. Incompatible additives require scope review.

• Selected flow: Potassium chloride c0f36a80-f6a0-4926-9a92-9c80f5fcb662
• Flow property / unit: Volume / m3
• Amount rule: Collect the actual attributable complete-period quantity using cp_feed; report per 1 kg reference flow only with positive B. No default amount.
• Value mode: foreground_record
• Specificity: site_specific
• Normalization basis: per 1 kg reference flow
• Basis kind: reference_flow
• Evidence kind: collected_record
• Collection protocol: cp_feed
• Sources: toray-nk-compaction-2019; sahut-compaction-1999

Alternating current (electricity)

This identity is explicitly CN, below 1 kV, grid-average consumption mix delivered to the user. Use only for that actual supply; another location, voltage or generator needs its compatible verified flow/provider before dataset completion. Meter reception, grinding if used, blending, force feed, roller hydraulics, crushing, sizing, screens, recycling conveyors, dust fans and bulk loading; retain idle/start/stop energy. Native property is Net calorific value/MJ. Convert metered kWh once by 3.6 MJ/kWh without inventing fuel efficiency.

• Selected flow: Alternating current 50657322-939c-4829-a87b-47c093bfa6a7
• Flow property / unit: Net calorific value / MJ
• Amount rule: Collect the actual attributable complete-period quantity using cp_energy; report per 1 kg reference flow only with positive B. No default amount.
• Value mode: foreground_record
• Specificity: site_specific
• Normalization basis: per 1 kg reference flow
• Basis kind: reference_flow
• Evidence kind: collected_record
• Collection protocol: cp_energy
• Sources: toray-nk-compaction-2019; sahut-compaction-1999

Hydraulic Fluid (hydraulic_oil)

Conditional whole purchased petroleum-oil-compatible hydraulic-fluid formulation for the actual roller-pressure circuit. The native lubricant classification is under preparations containing at least 70% petroleum oils, while its broad comment also mentions synthetic base oil: require actual supplier composition compatible with that category; do not extend this identity to water-glycol or synthetic-ester hydraulic fluids. Record oil grade, complete additives, actual replacements/top-ups, opening/closing circuit inventory and losses. Native reference Volume/m3 has no route or geography limit; match actual supplier temperature/volume definition and independently measured density when mass is needed. Secondary coefficients are not measured density. Do not inventory the base oil and additives again as duplicate purchases.

• Selected flow: Hydraulic Fluid 30691a38-a947-4b41-991e-194f6c9aa88f
• Flow property / unit: Volume / m3
• Amount rule: Collect the actual attributable complete-period quantity using cp_maintenance; report per 1 kg reference flow only with positive B. No default amount.
• Value mode: foreground_record
• Specificity: site_specific
• Normalization basis: per 1 kg reference flow
• Basis kind: reference_flow
• Evidence kind: collected_record
• Collection protocol: cp_maintenance
• Sources: toray-nk-compaction-2019; sahut-compaction-1999

Tap water (cleaning_water)

Conditional contained ancillary cleaning water, not intentional process humidification or binder water. Record the complete cleaning event, including no-output periods, mass or calibrated volume with measured compatible density, and wastewater destination. Native supplied treated water has no geography limit. Direct environmental discharge requires treatment/emission methods and additional atomic species rows before dataset completion.

• Selected flow: Tap water d1e0e36c-07f0-4a75-bdcb-efb5d9e2ac36
• Flow property / unit: Mass / kg
• Amount rule: Collect the actual attributable complete-period quantity using cp_water; report per 1 kg reference flow only with positive B. No default amount.
• Value mode: foreground_record
• Specificity: site_specific
• Normalization basis: per 1 kg reference flow
• Basis kind: reference_flow
• Evidence kind: collected_record
• Collection protocol: cp_water
• Sources: toray-nk-compaction-2019; sahut-compaction-1999

Elementary flows

Atmospheric water vapour absorbed into NK solids (humidity_uptake)

Conditional measured environmental moisture uptake. It is neither purchased water nor a negative vapour emission. Independently determine uptake using moisture/air measurements with stock and temperature coverage; do not infer it from an unexplained mass residual. The searched Volume-based resource water record does not establish a compatible mass exchange, so UUID remains unresolved.

• Selected flow: Atmospheric water vapour absorbed into NK solids
• Flow property / unit: Mass / kg
• Amount rule: Collect the actual attributable complete-period quantity using cp_water; report per 1 kg reference flow only with positive B. No default amount.
• Value mode: foreground_record
• Specificity: site_specific
• Normalization basis: per 1 kg reference flow
• Basis kind: reference_flow
• Evidence kind: collected_record
• Collection protocol: cp_water
• Sources: toray-nk-compaction-2019; sahut-compaction-1999

Outputs

Product flows

Fertilizers containing two nutrients: nitrogen and potassium, other than potassium nitrate (nk_product)

Only final accepted bulk AS/KCl composite granules are this reference output. Native name is broad manufactured NK fertilizer at plant; no fixed recipe, CAS, geography or competing granulation route is imposed. The optional pesticide list is not a required formulation; this method excludes pesticide addition. Record actual accepted nutrient composition, moisture, strength, size distribution and route. Intermediate blend/compacts and recycled fines remain internal transfers within compact, never second reference outputs.

• Selected flow: Fertilizers containing two nutrients: nitrogen and potassium, other than potassium nitrate 1dfc674e-e405-47ee-8abd-b118ec240fa5
• Flow property / unit: Mass / kg
• Amount rule: 1 kg
• Value mode: foreground_record
• Specificity: site_specific
• Normalization basis: per 1 kg reference flow
• Basis kind: reference_flow
• Evidence kind: collected_record
• Collection protocol: cp_product
• Sources: un-cpc-3-2025; toray-nk-compaction-2019

Waste flows

Discarded ammonium sulphate and potassium chloride NK granules (reject_nk)

Only actual discarded off-specification granules cross this waste boundary. Record complete moisture, N/K/S/Cl composition and receiver. Reworked lots and internal fines are internal transfers. A sale as fertilizer is a product function requiring separate identity/allocation review, not a waste disposal or automatic avoided-product credit. Do not substitute ammonium-chloride waste.

• Selected flow: Discarded ammonium sulphate and potassium chloride NK granules
• Flow property / unit: Mass / kg
• Amount rule: Collect the actual attributable complete-period quantity using cp_waste; report per 1 kg reference flow only with positive B. No default amount.
• Value mode: foreground_record
• Specificity: site_specific
• Normalization basis: per 1 kg reference flow
• Basis kind: reference_flow
• Evidence kind: collected_record
• Collection protocol: cp_waste
• Sources: toray-nk-compaction-2019; sahut-compaction-1999

Dust (captured_dust)

Only separately collected AS/KCl process dust actually leaving for external management. The broad native waste-dust identity has no material-treatment/geography limit; constrain actual composition, moisture, contamination and receiver. Captured dust returned to compact is an equal internal transfer and not an external waste or air emission. No native housekeeping sentence is a monitoring frequency or quantity default.

• Selected flow: Dust 2a6c9b60-a075-45ec-b611-c3b4dd255935
• Flow property / unit: Mass / kg
• Amount rule: Collect the actual attributable complete-period quantity using cp_waste; report per 1 kg reference flow only with positive B. No default amount.
• Value mode: foreground_record
• Specificity: site_specific
• Normalization basis: per 1 kg reference flow
• Basis kind: reference_flow
• Evidence kind: collected_record
• Collection protocol: cp_waste
• Sources: toray-nk-compaction-2019; sahut-compaction-1999

Waste oil (waste_oil)

Conditional spent hydraulic lubricating oil generated by in-plant equipment maintenance, consistent with the native as-generated maintenance lubricating/cutting-oil category. Constrain this row to the actual hydraulic lubricating stream, including additives/water/contamination and external receiver. Not recycled oil sold as product and not a combined waste collection.

• Selected flow: Waste oil 2a68e97a-21fe-43f7-a86e-3e39b653e10a
• Flow property / unit: Mass / kg
• Amount rule: Collect the actual attributable complete-period quantity using cp_maintenance; report per 1 kg reference flow only with positive B. No default amount.
• Value mode: foreground_record
• Specificity: site_specific
• Normalization basis: per 1 kg reference flow
• Basis kind: reference_flow
• Evidence kind: collected_record
• Collection protocol: cp_maintenance
• Sources: toray-nk-compaction-2019; sahut-compaction-1999

Contained NK equipment-cleaning wastewater (cleaning_effluent)

Conditional separately collected aqueous cleaning stream sent to a named external wastewater receiver. Meter whole wet stream; sample dissolved N/K/S/Cl and suspended solids separately. These subledgers are not duplicate wet exchanges. No electrolytic-manganese washing-water identity or manure candidate is compatible. Unknown treatment/provider remains disclosed, not zero burden.

• Selected flow: Contained NK equipment-cleaning wastewater
• Flow property / unit: Mass / kg
• Amount rule: Collect the actual attributable complete-period quantity using cp_water; report per 1 kg reference flow only with positive B. No default amount.
• Value mode: foreground_record
• Specificity: site_specific
• Normalization basis: per 1 kg reference flow
• Basis kind: reference_flow
• Evidence kind: collected_record
• Collection protocol: cp_water
• Sources: toray-nk-compaction-2019; sahut-compaction-1999

Elementary flows

particles (PM2.5) (pm25)

Residual released particles up to 2.5 micrometres after actual controls, plus attributable fugitives. Native medium: emissions to outdoor air, unspecified subcompartment; not indoor exposure, resource uptake or a correction flow. Record actual source/height/location and use a more specific compatible flow only after verification. Measure full period mass without default release; do not add total PM to the size bins.

• Selected flow: particles (PM2.5) 08a91e70-3ddc-11dd-9293-0050c2490048
• Flow property / unit: Mass / kg
• Amount rule: Collect the actual attributable complete-period quantity using cp_air; report per 1 kg reference flow only with positive B. No default amount.
• Value mode: foreground_record
• Specificity: site_specific
• Normalization basis: per 1 kg reference flow
• Basis kind: reference_flow
• Evidence kind: collected_record
• Collection protocol: cp_air
• Sources: toray-nk-compaction-2019; sahut-compaction-1999

particles (PM2.5 - PM10) (pm2510)

Only the non-overlapping 2.5–10 micrometre fraction, not total PM10. Native medium: emissions to outdoor air, unspecified subcompartment; not indoor exposure, resource uptake or a correction flow. Record actual source/height/location and use a more specific compatible flow only after verification. Measure full period mass without default release; do not add total PM to the size bins.

• Selected flow: particles (PM2.5 - PM10) 08a91e70-3ddc-11dd-9501-0050c2490048
• Flow property / unit: Mass / kg
• Amount rule: Collect the actual attributable complete-period quantity using cp_air; report per 1 kg reference flow only with positive B. No default amount.
• Value mode: foreground_record
• Specificity: site_specific
• Normalization basis: per 1 kg reference flow
• Basis kind: reference_flow
• Evidence kind: collected_record
• Collection protocol: cp_air
• Sources: toray-nk-compaction-2019; sahut-compaction-1999

particles (> PM10) (pm10plus)

Only particles greater than 10 micrometres; retain this interval even when a monitoring regime focuses on finer PM. Native medium: emissions to outdoor air, unspecified subcompartment; not indoor exposure, resource uptake or a correction flow. Record actual source/height/location and use a more specific compatible flow only after verification. Measure full period mass without default release; do not add total PM to the size bins.

• Selected flow: particles (> PM10) fe0acd60-3ddc-11dd-a70a-0050c2490048
• Flow property / unit: Mass / kg
• Amount rule: Collect the actual attributable complete-period quantity using cp_air; report per 1 kg reference flow only with positive B. No default amount.
• Value mode: foreground_record
• Specificity: site_specific
• Normalization basis: per 1 kg reference flow
• Basis kind: reference_flow
• Evidence kind: collected_record
• Collection protocol: cp_air
• Sources: toray-nk-compaction-2019; sahut-compaction-1999

ammonia (ammonia_air)

Conditional independently measured NH3 gas, CAS 7664-41-7, from actual solids storage/handling or cleaning; no assumed positive emission or default factor. Convert ammonia-N to NH3 only with a documented molar basis. Native medium: emissions to outdoor air, unspecified subcompartment; not indoor exposure, resource uptake or a correction flow. Record actual source/height/location and use a more specific compatible flow only after verification. Measure full period mass without default release; do not add total PM to the size bins.

• Selected flow: ammonia 08a91e70-3ddc-11dd-a2a9-0050c2490048
• Flow property / unit: Mass / kg
• Amount rule: Collect the actual attributable complete-period quantity using cp_air; report per 1 kg reference flow only with positive B. No default amount.
• Value mode: foreground_record
• Specificity: site_specific
• Normalization basis: per 1 kg reference flow
• Basis kind: reference_flow
• Evidence kind: collected_record
• Collection protocol: cp_air
• Sources: toray-nk-compaction-2019; sahut-compaction-1999

water vapour (water_vapour)

Conditional independently measured molecular water vapour, CAS 7732-18-5; distinguish free-water evaporation, bound-water release and any separately proven chemical formation. No dryer is assumed and the mass residual is not evaporation. Native medium: emissions to outdoor air, unspecified subcompartment; not indoor exposure, resource uptake or a correction flow. Record actual source/height/location and use a more specific compatible flow only after verification. Measure full period mass without default release; do not add total PM to the size bins.

• Selected flow: water vapour fe0acd60-3ddc-11dd-ac04-0050c2490048
• Flow property / unit: Mass / kg
• Amount rule: Collect the actual attributable complete-period quantity using cp_air; report per 1 kg reference flow only with positive B. No default amount.
• Value mode: foreground_record
• Specificity: site_specific
• Normalization basis: per 1 kg reference flow
• Basis kind: reference_flow
• Evidence kind: collected_record
• Collection protocol: cp_air
• Sources: toray-nk-compaction-2019; sahut-compaction-1999

7. Allocation and Co-product Handling

rule_id	Applies to	Rule	source_ids
allocation_subdivide	compact	Subdivide by actual SKU/state/route and stage meters before allocation. Share common electricity/maintenance by documented measured causation or service duty; retain complete failed and idle burden pools and justify any residual allocation. No default economic/mass fraction.	toray-nk-compaction-2019; sahut-compaction-1999
allocation_physical	all inventory rows	Keep the complete unallocated physical mass/water/element and internal-transfer ledger separate from the attributed environmental-burden ledger. Never multiply physical product outlets or paired internal transfers by an allocation fraction. Internal returns carry their existing burdens and extra processing energy; no avoided-feed credit.	toray-nk-compaction-2019; sahut-compaction-1999
allocation_outputs	reject_nk; captured_dust; waste_oil	No routine co-product is presumed. Classify each actual external output once by function, legal/receiver status and composition. A sold off-grade fertilizer or recovered oil product needs separately reviewed identity and allocation; do not silently call it waste or automatically assign substitution credit.	toray-nk-compaction-2019; sahut-compaction-1999

8. Foreground Data Collection, Calculation, and Quality Rules

Data Collection Protocols

Preserve raw totals before attribution and never select only productive events. The final release gate defines unique completed B; all preceding actual storage and bulk loading remain in compact. Feed and unaccepted WIP have opening/closing process-stock ledgers; released finished goods have a separate warehouse ledger and B cannot be counted again as closing process stock. Rework counts once at final acceptance; all repeat energy remains. A separate burden-carryover ledger records opening/closing WIP embodied burdens and attribution without erasing failed consumption or creating free WIP. Every protocol belongs only to compact and covers the same complete SKU/state/route period; B=0 retains all events and burdens without an invented normalized result. Keep a receipt/store reconciliation separately from metered production charges: opening feed stock plus receipts minus closing feed stock and unchanged external returns must reconcile with actual charges and separately identified losses. The production-pool physical ledger uses those complete charges plus opening post-charge WIP; its closing WIP excludes uncharged feed stock. The whole-site receipt ledger includes both feed stores and WIP. Do not add receipts and charges as two purchased exchanges. Attribute supplier burdens to actual production demand, transfer measured closing feed/WIP embodied burdens to the carryover ledger, and retain every failed-run burden in the matched pool.

protocol_id	process_id	flow_role	record_type	raw_fields	collection_method	unit	frequency	temporal_coverage	site_scope	aggregation_rule	quality_evidence
cp_product	compact	nk_product	foreground_record	SKU; one-time release event; gross/tare/net B; N forms and total N; K/K2O; S/Cl; moisture; free acidity; feed/product sieves; crush strength/attrition; homogeneity; start/end feed/WIP; finished-stock ledger; carried burdens	Calibrated final net scale and representative lot assays, sieve/strength/storage checks; retain agreed test method, sampling, scale uncertainty and rejected lots	kg	Every batch/stage and associated representative monitoring	Complete period including start/stop, failed/zero-output, rework, storage and WIP	Actual same-SKU/state/route site	per 1 kg reference flow	Calibration, original logs, assays/sampling, paired transfer/stock reconciliation and supplier/receiver evidence
cp_feed	compact	feed_as; feed_kcl	foreground_record	Supplier; grade/route; complete supplied kg; component/coating/water assay; KCl m3 convention, packing, moisture, temperature and independently measured density; stock/charge/returns; particle sizes; roller settings; pass counts	Calibrated receipt/feed weighing, metered charges and supplier-compatible volume/density tests; reconcile stocks and measured internal transfers; inspect actual granulation route	kg; m3	Every batch/stage and associated representative monitoring	Complete period including start/stop, failed/zero-output, rework, storage and WIP	Actual same-SKU/state/route site	per 1 kg reference flow	Calibration, original logs, assays/sampling, paired transfer/stock reconciliation and supplier/receiver evidence
cp_energy	compact	electricity	foreground_record	Stage kWh; meter; site/time; CN delivery; voltage; supplier quantity; press/force-feed/crusher/screen/fan/load duty; failed/idle/start/stop energy; common load attribution	Calibrated stage meters and bills, all repeat processing passes; measure common loads separately and preserve conversion and attribution records	MJ	Every batch/stage and associated representative monitoring	Complete period including start/stop, failed/zero-output, rework, storage and WIP	Actual same-SKU/state/route site	per 1 kg reference flow	Calibration, original logs, assays/sampling, paired transfer/stock reconciliation and supplier/receiver evidence
cp_maintenance	compact	hydraulic_oil; waste_oil	foreground_record	Complete oil formulation; supplier volume/temperature; grade; density; top-up/replacement; opening/closing hydraulic stock; waste wet kg and additives/water; spill/capture; receiver	Meter whole purchased fluid volume; independently measure compatible density for mass; weigh spent oil and reconcile circuit stocks; retain supplier/maintenance/receiver evidence	m3; kg	Every batch/stage and associated representative monitoring	Complete period including start/stop, failed/zero-output, rework, storage and WIP	Actual same-SKU/state/route site	per 1 kg reference flow	Calibration, original logs, assays/sampling, paired transfer/stock reconciliation and supplier/receiver evidence
cp_waste	compact	reject_nk; captured_dust	foreground_record	Origin; actual full mass; moisture; dry matter; N/K/S/Cl; contamination; each internal return and external waste; receiver/function/treatment; transfer receipt	Weigh each separated dust/reject stream and both ends of every return; independently verify waste status, destination and composition	kg	Every batch/stage and associated representative monitoring	Complete period including start/stop, failed/zero-output, rework, storage and WIP	Actual same-SKU/state/route site	per 1 kg reference flow	Calibration, original logs, assays/sampling, paired transfer/stock reconciliation and supplier/receiver evidence
cp_water	compact	cleaning_water; cleaning_effluent; humidity_uptake	foreground_record	Complete cleaning cycles; supplied and effluent wet kg or metered m3 with measured density; dissolved ions and suspended solids; feed/product/stock moisture; air humidity, temperature and independent uptake/evaporation observations	Meter full contained cleaning events; representative independent liquid/solid/air sampling and moisture tests; distinguish phase exchange from evidenced reaction water; preserve unexplained residual	kg	Every batch/stage and associated representative monitoring	Complete period including start/stop, failed/zero-output, rework, storage and WIP	Actual same-SKU/state/route site	per 1 kg reference flow	Calibration, original logs, assays/sampling, paired transfer/stock reconciliation and supplier/receiver evidence
cp_air	compact	pm25; pm2510; pm10plus; ammonia_air; water_vapour	foreground_record	Species/source/location/height; outdoor compartment; non-overlapping size fractions; concentration; integrated gas volume or volume flow/time; pressure; temperature; wet/dry and normal/actual; controls/fugitives; detection limit; represented hours	Measure residual stack and fugitive releases over representative full operating states; match sampling and gas-volume basis, distinguish integrated volume from flow rate; no generic factor or forced balance	kg	Every batch/stage and associated representative monitoring	Complete period including start/stop, failed/zero-output, rework, storage and WIP	Actual same-SKU/state/route site	per 1 kg reference flow	Calibration, original logs, assays/sampling, paired transfer/stock reconciliation and supplier/receiver evidence

Calculation Rules

rule_id	Applies to	Formula or rule	Inputs	Output	source_ids
period_normalization	all inventory rows	Preserve raw matched full-period totals and stock/WIP burden transfers. After compatible raw unit conversion and documented burden attribution, divide each attributable exchange once by positive B. Reference output is exactly 1 kg; B=0 retains totals without a unit inventory.	cp_product; cp_feed; cp_energy; cp_maintenance; cp_waste; cp_water; cp_air	Exchanges per 1 kg reference flow, original totals and carried-burden ledger	toray-nk-compaction-2019; sahut-compaction-1999
provider_conversion	feed_kcl; hydraulic_oil; cleaning_water	Keep physical kg and provider-native m3 separately. Use independently measured corresponding mass/volume density for the identical material, packing, moisture and temperature definition; do not use a database secondary coefficient or an unrelated patent density. Resolve unknown provider basis before claiming a complete background link.	cp_feed; cp_maintenance; cp_water	Compatible period kg and m3 before normalization	toray-nk-compaction-2019; sahut-compaction-1999
electricity_conversion	electricity	Convert measured kWh using exactly 3.6 MJ/kWh once; retain native Net calorific value property. Include all repeat press/crush/classification passes and actual common loads, then normalize by B once.	cp_energy; cp_product	MJ per 1 kg reference flow	toray-nk-compaction-2019; sahut-compaction-1999
physical_balance	all inventory rows	On matched complete period boundaries, complete measured production charges plus opening post-charge stock/WIP and independently measured environmental uptake equal accepted product plus actual discarded solids, contained effluent, actual releases and closing post-charge stock/WIP. Reconcile uncharged feed stocks separately through the receipt ledger. Exclude already released B from closing process stocks; completed-goods warehouse stocks have a separate ledger. Equal internal return transfers cancel only in the aggregate. Balance whole wet mass, dry solids, N/K/S/Cl and actual oil/additive carbon separately; no theoretical recipe or residual-assigned loss.	cp_product; cp_feed; cp_maintenance; cp_waste; cp_water; cp_air	Complete unallocated physical and elemental ledgers	toray-nk-compaction-2019; sahut-compaction-1999
water_species	all inventory rows	Separate whole wet inputs from constituent/carrier-water subledgers. Dry compression itself establishes no net chemical water formation or consumption. Measure free-water phase exchange and any structural/bound-water change independently. Evidence of real reaction requires species/stoichiometry and separate generation/consumption evidence and scope review; never fit unknown reaction water and an unknown outlet to one residual, or use COD as dry matter/reaction water.	cp_feed; cp_water; cp_air; cp_product	Water/species ledgers and disclosed residuals	toray-nk-compaction-2019; sahut-compaction-1999
air_mass	pm25; pm2510; pm10plus; ammonia_air; water_vapour	Multiply compatible concentration by already integrated gas volume, or integrate concentration times volume flow rate over time. Preserve each represented operating state, wet/dry and pressure/temperature bases. Convert nitrogen-reported NH3 with documented molar mass basis only. Keep PM bins disjoint, captured solids separate, and normalize full attributable mass by B once.	cp_air; cp_product	Species kg per 1 kg reference flow	toray-nk-compaction-2019; sahut-compaction-1999

Data Quality Requirements

requirement_id	Applies to	Requirement	Evidence
quality_identity	all inventory rows	Verify full native name components, route/state/grade, geography where declared, CAS, type/medium and exact reference property/unit version chain. Keep unknowns distinct from contradictions; broad identity does not prove supplier amount, recipe or background suitability.	cp_product; cp_feed; cp_energy; cp_maintenance
quality_measurement	all inventory rows	Preserve original calibrated measurements, assay methods, sampling coverage, uncertainty and detection limits. Missing UUID or monitoring is not measured zero; retain actual exchanges and unresolved links. No borrowed patent or maker yield/pressure/recipe/energy/density default.	cp_product; cp_water; cp_air
quality_period	all inventory rows	Use complete same-SKU/state/route pools including failed/zero-output batches and rework. Trace opening/closing WIP embodied burdens in a separate carryover ledger so incoming WIP is not free and failed burdens are not discarded. Unresolved carryover allocation remains incomplete dataset evidence.	cp_product; cp_feed; cp_energy; cp_maintenance

9. Validation Rules

rule_id	Applies to	Rule	source_ids
validate_reference	nk_product	Require exactly one final product reference row with compatible broad NK identity and Mass/kg. Verify actual AS/KCl composite-granule state/route, no KNO3 or intentional P/pesticide, positive unique B and all qualifiers. Native broad identity is not universal methodology coverage.	un-cpc-3-2025; toray-nk-compaction-2019
validate_period	all inventory rows	Check raw totals, failed/zero-output coverage, stock/WIP and burden carryover, internal return equality and one normalization. B=0 cannot yield a normalized inventory. Every collection protocol belongs to compact and covers its actual linked rows.	toray-nk-compaction-2019; sahut-compaction-1999
validate_physics	all inventory rows	Reconcile complete physical wet/dry mass, molecular/structural/free water, actual species, N/K/S/Cl and oil/additive carbon independently of allocated burdens. No balance-residual emissions, reaction water or hidden assumed outlet. Reject incompatible real reactions or additional routes until reviewed.	toray-nk-compaction-2019
validate_links	feed_kcl; hydraulic_oil; electricity; cleaning_water; reject_nk; cleaning_effluent; humidity_uptake	Verify provider-native quantities and complete treatment/transport links separately from identities. Explicit electricity CN/user-mix/voltage limits apply only to that record. An ordinary auxiliary identity gap requires disclosure and dataset repair, not deletion or automatic methodology demotion.	sahut-compaction-1999
validate_air	pm25; pm2510; pm10plus; ammonia_air; water_vapour	Verify actual outdoor species/subcompartment, sampling/volume bases and non-overlapping bins. Total PM is a check, not an added fourth exchange. Separate captured dust, indoor exposure and environmental releases. A maker pollution assertion does not establish measured absence.	sahut-compaction-1999

10. Published Dataset Profile

Field	Value
dataset_role	secondary_dataset; background_dataset
downstream_use	Verified plant-gate supply inventory for the defined dry AS/KCl compacted NK subtype
allowed_use	Actual matched bulk supply with complete collected quantities, upstream/treatment links and disclosed review requirements
excluded_use	Universal NK/NPK coverage, potassium nitrate, nutrient-equivalent agronomic comparison, field emissions, wet/binder/coated/liquid routes or invented quantities
required_metadata	All reference qualifiers; actual native name/location/property restrictions; raw totals and B; sampling, stock/WIP and carryover; provider references; allocation, capital and transport boundaries
required_quality_disclosure	Scientific review pending; unresolved auxiliary UUIDs; provider-volume compatibility; measurement uncertainty, detection and completeness; patent/manufacturer evidence limitations
update_trigger	Changed recipe/feed/conditioning, actual reaction, binder/water/coating/thermal route, package/delivery, grid/geography, provider basis, output function or measurement method

11. Data Sources

source_id	type	reference	used_for
un-cpc-3-2025	official_guidance	UN Statistics Division, CPC Version 3.0 Explanatory Notes, 30 June 2025, p.166. https://unstats.un.org/unsd/classifications/Econ/Download/In%20Text/CPC_Ver_3.0_Exp_Notes_30Jun2025.pdf	Classification only: 34647 excludes potassium nitrate; optional listed substances are not a required recipe or accepted mapping.
eu-jrc-lvic-aaf-2007	official_guidance	European Commission/JRC, LVIC-AAF BREF, August 2007, §7.1 and §7.2.1, printed pp.283/285, PDF pp.311/313. https://bureau-industrial-transformation.jrc.ec.europa.eu/sites/default/files/2022-03/LVIC-AAF.pdf?download=1	Nutrient reporting and separation of mechanical blending/compaction from acid and Odda routes; Figure 7.1 does not describe the dry route. No plant or emission/consumption default.
toray-nk-compaction-2019	literature	Toray Industries, JP2019043797A, published 22 March 2019, claims 6–14; detailed description on PDF pp.7–10 and examples from p.13. https://patents.google.com/patent/JP2019043797A/en	Primary patent evidence for AS/KCl dry mixing, roller briquetting, crushing, sizing, classification, fines return and measured quality attributes. Japanese text is primary; English is machine translation. Claimed/experimental recipe, moisture, density, size, pressure, speed, strength and yields are case limits, not universal defaults; future site acceptance and collection are mandatory.
sahut-compaction-1999	literature	F.Dehont, Sahut-Conreur, Compaction-granulation of Fertilizer: An Economical Process for a la carte Formulations, Powder Handling & Processing 11(3), July/September 1999, PDF pp.1–3. https://d20854696ijsuu.cloudfront.net/files/22081/download/686683/1-3.pdf	Equipment-maker original: dry pressure agglomeration, stages, fines/oversize circulation and dust control; historical qualitative support. Figure includes optional humidification/coating, excluded here; no productivity, yield, density, energy or zero-effluent assertion becomes a default or demonstrated absence.

Online originals checked 16 October 2026. Historical documents support physical methodology, not current regulatory advice or scientific approval.