Guidelines for the Statistics of Fertilizer-Related Products

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Yellow phosphorus. Product code: 2619020. Unit of measurement: tons. Yellow phosphorus is produced by reducing 35% phosphorus-rich ore (usually in lump form; low-grade ore must first be crushed, processed, and sintered into pellets before it can be used in the furnace), along with coke, in a closed electric furnace. It is mainly used in the production of pesticides and other products. The products must meet the quality standards of GB7816-87, and production volume shall be calculated based on the actual quantity. Concentrated nitric acid Product code: 2620010 Unit of measurement: tons Concentrated nitric acid includes that produced by the concentration of dilute nitric acid as well as that synthesized directly from ammonia. Only after verification that it meets the requirements specified in standard (GB337 - 84) can the production volume of concentrated nitric acid be recorded. The production volume of concentrated nitric acid should be calculated as 100% based on the nitric acid (HNO3) content specified in the standards. The production volume of concentrated nitric acid does not include diluted nitric acid produced by various methods. Synthetic ammonia. Product code: 2620020. Unit of measurement: tons. Synthetic ammonia is calculated based on its physical volume, without conversion to 100% pure form. The ammonia synthesis output includes: ① the consumption by various ammonia-using units within the plant ； ②Amount of liquid ammonia in the product at departure from the factory ； ③Internal consumption in the ammonia synthesis process (for copper washing and desulfurization) ； ④Amount of ammonia recovered from the ammonia tank vent gas and the synthesis tower off-gas (the recovered product is counted as 100% on an ammonia-content basis). But does not include: ① Ammonia used for the chiller itself (loss) amount ； ②Ammonia content in ammonia recovered from copper washing and ammonia desulfurization ； ③The nitrogen content in the ammonia solution coming out of the carbonization cleaning tower and the recovery tower. The production volume of synthetic ammonia shall be determined based on instrument measurements; if a company does not have nitrogen liquefied gas meters installed, the production volume of synthetic ammonia shall be calculated based on the output of the final nitrogen-containing products. The production volume of synthetic ammonia is calculated by eliminating the method based on the ammonia tank level gauge and by using the quota for ammonia consumption in ammonia-based products. ⑴Instrumentation for measurement: When using instruments to measure the production of liquid ammonia, the liquid ammonia must pass through an intermediate tank to have the gases dissolved in it removed under reduced pressure, and temperature and pressure adjustments must be made to ensure accurate measurement. When a company has both a total ammonia meter and separate meters for each user, the ammonia produced must balance with the amount used; there should be no artificial discrepancy where production is higher than consumption. ① ① When the total ammonia meter is installed in front of the ammonia storage tank: Synthetic ammonia production (tons) = Reading of the total ammonia meter + Ammonia recovered from venting, stripping, and release gases. ② When the total ammonia meter is installed behind the ammonia storage tank: Synthetic ammonia production (tons) = Reading of the total ammonia meter + Ammonia used internally + Amount of liquid ammonia sold as a product + Ammonia recovered from venting, stripping, and release gases + (Ending inventory of ammonia tanks – Starting inventory of ammonia tanks). ③ When the sum of the ammonia measurement meters for each user is used as the basis for calculating ammonia production: Synthetic ammonia production (tons) = Sum of the readings from the ammonia measurement meters of all users (including those for ammonia used internally and liquid ammonia sold as a product) + Ammonia recovered from venting, stripping, and release gases. The amount of ammonia recovered from the off-gases, purge gases, and vent gases refers to the amount of ammonia that is recovered from the off-gases of the synthesis tower, the purge gases from the intermediate tank, and the vent gases from the ammonia tank, and then reused and sold within the system. ⑵When calculating the ammonia synthesis output based on the final nitrogen-containing products, and when determining the liquid ammonia production using these same products, the ammonia utilization rate for various solid fertilizers such as ammonium bicarbonate, *ao acid an, sulfuric acid an, ammonium chloride, and urea, as well as concentrated nitric acid, is set at 90% ； The ammonia utilization rate of ammonia water is 95%. Ammonia production volume = Quantity of liquid ammonia for sale + (Quantity of qualified solid fertilizers with 100% nitrogen content + Quantity of unqualified solid fertilizers with 100% nitrogen content) × 1.35098 + (Quantity of qualified ammonia water with 100% nitrogen content + Quantity of unqualified ammonia water with 100% nitrogen content) × 1.05263 + Quantity of ammonia used internally + (Ending inventory of ammonia tanks – Starting inventory of ammonia tanks). Where: 1.35098 = 1/0.82245 × 90%; 0.82245 is the theoretical nitrogen content in ammonia. 1.05263 = 1/95%. ① The quantity of liquid ammonia for sale is based on the amount packed into bottles or loaded onto vehicles. ②The ammonia content calculated from ammonia water includes the qualified agricultural ammonia and industrial ammonia produced from the gas blown out directly from the synthesis tower, the gas released from intermediate tanks, and the gas vented from ammonia tanks; it also includes the substandard ammonia with an ammonia content of over 10% that has been sold ； However, this does not include ammonia from copper washing and desulfurization recovery, ammonia from the carbonization cleaning tower and the recovery tower, nor does it include ammonia used for copper washing and desulfurization purposes, as well as ammonia that is discharged, whether it is qualified or not. ③Ammonia consumption for own use. When each user is equipped with an ammonia meter, the amount of ammonia used for own consumption is based on the values indicated by the meter ； When there is no metering for individual users, the regulations and calculation formulas for the ammonia used for internal purposes are as follows: 1. For the ammonia used in the copper washing process, it amounts to 0.5% of the total ammonia volume. Ammonia used in copper washing (in tons) = Synthetic ammonia production volume × 0.5%. 2. For the ammonia used after switching from copper washing to alkali washing, it also amounts to 0.5% of the total ammonia volume. Ammonia used after this switch (in tons) = Synthetic ammonia production volume × 0.5%. 3. The ammonia used in the desulfurization process amounts to 1% of the total ammonia volume. Ammonia used for desulfurization (in tons) = Synthetic ammonia production volume × 1%. Only the amount corresponding to the applicable method above should be calculated; if none of these methods apply, then no ammonia used for internal purposes can be calculated. Additionally, other forms of ammonia consumption cannot be counted as ammonia used for internal purposes. ④The difference (positive or negative) in the inventory levels of each liquid ammonia storage tank at the beginning, middle, and end of the period, as well as the difference (positive or negative) in the inventory levels and the amount of ammonia equivalent calculated from the concentrations in each ammonia tank and mother liquor tank (excluding those used for copper washing and sulfur removal to recover ammonia). A positive difference indicates that the inventory level at the end of the period is higher than at the beginning, and such a value is included in the synthetic ammonia production for that period ； If the difference is negative, meaning the ending amount is less than the starting amount, the absolute value of this difference should be deducted from the current period’s synthetic ammonia production. ⑶When producing synthetic ammonia from various raw materials, the amount of ammonia produced needs to be determined. When enterprises report the output of synthetic ammonia, they should break down the total output by each type of raw material used. When producing synthetic ammonia from various raw materials, the amount of synthetic ammonia produced from each material should be determined by considering the volume of gas generated by that material and its effective gas composition, as part of the total ammonia production. The calculation formula is as follows: Amount of synthetic ammonia produced from a certain material (in tons) = Total synthetic ammonia production × Volume of gas generated by that material × Effective gas composition (%) ÷ Sum of (Volume of gas generated by all materials × Effective gas composition %). The total amount of nitrogen, phosphorus, and potassium chemical fertilizers for agricultural use (on a pure basis) has the product code 2620030, with the unit of measurement being tons. This total represents the sum of nitrogen, phosphorus, and potassium fertilizers used in agriculture, calculated on a 100% pure basis. Nitrogen fertilizer (equivalent to 100% N) Product code: 2621010 Unit of measurement: tons. Nitrogen fertilizer (equivalent to 100% N) refers to chemical fertilizers that contain the nutrient element nitrogen necessary for crops. The nitrogen fertilizer production process is a process of processing ammonia. The main types of nitrogen fertilizers include ammonium sulfate, ammonium nitrate, urea, ammonium bicarbonate, ammonium chloride, calcium cyanamide, ammonia water, as well as compound fertilizers containing nitrogen, such as nitrogenous phosphate fertilizers and ammonium phosphate fertilizers. Its yield should be calculated for each variety as 100% based on the actual nitrogen content. The nitrogen fertilizer production (expressed as N100%) is the sum of the physical quantities of various qualified nitrogen fertilizer types, multiplied by their actual nitrogen content (%). Where the content of active ingredients is expressed on a dry basis, the calculation should involve deducting the moisture content from the actual amount, and then multiplying by the dry basis content obtained from the analysis. Urea (equivalent to 100% N content), Product Code: 2621020, Unit of measurement: tons. Urea (equivalent to 100% N content) refers to the total output of urea that meets the quality standards specified in GB2440 -91, expressed in terms of actual quantity; it is the pure amount after deducting the portion intended for industrial use. Calculation formula: Urea (equivalent to 100% N) (tons) = ∑〔Actual amount of qualified urea × (1 – moisture content %) × actual nitrogen content (on a dry basis)〕 Phosphatic fertilizer (equivalent to 100% phosphorus pentoxide). Product code: 2622010. Unit of measurement: tons. Phosphatic fertilizer (equivalent to 100% phosphorus pentoxide) refers to a chemical fertilizer that contains the nutrient element phosphorus for crops, and is produced using phosphate rock as the main raw material through chemical processes. Its main varieties include ordinary superphosphate, double superphosphate, dicalcium phosphate, calcium magnesium phosphate fertilizer, calcium magnesium potassium phosphate fertilizer, as well as compound fertilizers such as ammonium phosphate containing phosphorus, phosphate nitrate, and potassium dihydrogen phosphate. In phosphorus fertilizer production, products with an effective phosphorus pentoxide content (%) of less than 12% are considered defective, and their output cannot be included in the statistics. The production of ordinary calcium phosphate in phosphate fertilizers should be calculated based on the products that have completed the maturation process ； The production volume of calcium-magnesium phosphate fertilizer should be calculated based on the product that has been ground (passing through an 80-mesh sieve) with a fineness of ≥80%; unground material is considered semi-finished product and cannot be counted toward the fertilizer production volume. Phosphatic fertilizer production volume (converted to P2O5 at 100%) (tons) = ∑(actual quantity of qualified phosphatic fertilizer varieties × actual effective phosphorus content). A licensing system is in place for phosphatic fertilizer production; enterprises without a production license cannot have their phosphatic fertilizer production volumes recorded. Potash fertilizer (expressed as 100% potassium oxide) Product code: 2623010 Unit of measurement: tons. The main types of potash fertilizers (expressed as 100% potassium oxide) are potassium chloride, potassium sulfate, and potassium nitrate. All types of potassium fertilizers must meet the quality standards of GB6549 – 86. For all fertilizers containing the crop nutrient potassium, which are produced by enriching and refining natural potash minerals, the potassium content in such fertilizers should be uniformly converted to 100% potassium oxide when calculating their production volume. Potassium sulfate produced from natural potassium salt ores (sulfate-rich type) has its yield converted to 100% potassium oxide. Potassium feldspar is added during the production of calcium-magnesium-phosphate fertilizer; when qualified calcium-magnesium-phosphate fertilizer contains potassium chloride, it should be converted to 100% potassium oxide and included in the potassium fertilizer production volume. Formula for calculating potassium fertilizer production: Potassium fertilizer production (expressed as 100% potassium oxide) = Actual quantity of potassium chloride (or potassium sulfate) on a dry basis × Actual content of potassium chloride (%). When producing potassium sulfate or potassium nitrate using imported or domestic potassium chloride as raw material, it should not be converted to 100% potassium oxide when calculating the potassium fertilizer production, in order to avoid double counting. Industrial potassium chloride, potassium sulfate, and potassium nitrate should not be included in the production volume of potash fertilizers. Synthetic compound fertilizer (physical quantity) Product code: 2624010 Unit of measurement: tons. Synthetic compound fertilizer (physical quantity) refers to chemical fertilizers that are produced through chemical reactions and contain two or more of the main nutrient elements required by crops, namely nitrogen, phosphorus, and potassium. The main synthetic compound fertilizers include ammonium phosphate fertilizers, phosphoric acid fertilizers, potassium dihydrogen phosphate, and potassium nitrate. In addition to being reported in terms of physical quantity, their production volume should also be converted into 100% based on the nutrient elements they contain, and then included separately in the production figures for nitrogen and phosphorus fertilizers. Synthetic compound fertilizers do not include commercially purchased chemical fertilizers such as urea and potassium chloride, nor mixed fertilizers produced through physical processing methods. Ammonium phosphate fertilizer (physical quantity) Product code: 2624020 Unit of measurement: tons. Ammonium phosphate fertilizer (physical quantity) refers to a fertilizer that contains both nitrogen and phosphorus as nutrient elements, and is produced by the reaction of phosphoric acid (including polyphosphoric acid) with ammonia. The main varieties are diammonium phosphate and ammonium phosphate. The main characteristics of this type of fertilizer are a high concentration of active ingredients, water solubility, suitability for all soils and crops, and resistance to moisture absorption and caking. The production volume of ammonium phosphate fertilizer (in physical terms) should be reported not only in terms of its physical quantity but also converted into 100% based on the nutrient elements it contains, which should then be included separately in the production figures for nitrogen and phosphorus fertilizers. Phosphoric acid nitrogen fertilizer (in physical terms): Product code: 2624030; Unit of measurement: tons. Phosphoric acid nitrogen fertilizer (in physical terms) refers to a nitrogen-phosphorus compound fertilizer produced by decomposing phosphate rocks with nitric acid. In addition to being reported in terms of physical quantity, its output should also be converted into 100% based on the nutrient elements it contains, and recorded separately as part of the nitrogen and phosphorus fertilizer production. Phosphorus ore (equivalent to 30% phosphorus pentoxide content) Product code: 1020020 Unit of measurement: tons. Phosphorus ore refers to the finished ore that has been transported away from the mine entrance or open-pit quarry to storage silos or areas, and meets the specified quality standards or the requirements outlined in the order contract. Phosphorus ore production is calculated both in terms of physical volume and in terms of an equivalent amount containing 30% phosphorus pentoxide. This includes phosphate rock that is produced internally and processed into phosphate fertilizers or other finished products. The amount of ore acquired by the company, after being washed and refined and then turned into products for sale, is not included in the production figures in order to avoid double-counting; the production volume is instead recorded based on the units that have been sold. Phosphorus ore (equivalent to 30% phosphorus pentoxide) = Physical quantity × (1 – moisture percentage) × weighted average grade on a dry basis % 30% Physical quantity × weighted average grade on a wet basis % Phosphorus ore (equivalent to 30% phosphorus pentoxide) = ——————————————— 30% Boron ore (equivalent to 12% boron trioxide) Product code: 1020030 Unit of measurement: tons Boron ore refers to the amount of finished ore that is transported out of the mine entrance or open-pit quarry and delivered to storage areas, and that meets the specified quality standards or the requirements outlined in the purchase contract. Boron ore production is calculated both in terms of physical volume and in terms of an equivalent amount containing 12% boron trioxide. This includes boron ores that are produced internally and processed into finished products such as boric acid and borax. Physical quantity × (1 – moisture %) × weighted average grade on a dry basis % for boric ore (converted to 12% boron trioxide) = ————————————————— 12% Physical quantity × weighted average grade on a wet basis % for boric ore (converted to 12% boron trioxide) = ———————————————— 12% Hydrochloric acid (with a content of 31% or more) Product code: Unit of measurement: tons Hydrochloric acid (with a content of 31% or more) includes both synthetic hydrochloric acid and by-product hydrochloric acid. Synthetic hydrochloric acid is produced by burning chlorine and hydrogen obtained from the electrolysis of salt in a synthesis furnace to generate hydrogen chloride gas, which is then absorbed by water to yield hydrochloric acid. By-product hydrochloric acid is hydrochloric acid produced as a by-product of the manufacture of benzene chloride or engine oil, resulting from the absorption of hydrogen chloride gas by water. Upon testing, if it meets the **standard (GB320-93), the hydrochloric acid production can be calculated; however, if the hydrogen chloride (HCl) content is below 31%, the hydrochloric acid production is not taken into account. Production is calculated in terms of physical volume. Phosphoric acid (with a content of over 85%) Product code: 2611030 Unit of measurement: tons Phosphoric acid (with a content of over 85%) refers to orthophosphoric acid, excluding metaphosphoric acid and pyrophosphoric acid. The hydrogen phosphate H3PO4 content produced by extraction methods is below 85%; the production volume should be calculated as if it were 85%, based on the actual average content ； For phosphoric acid produced by thermal methods with a purity of over 85%, no conversion is necessary, and the production volume is calculated based on the actual amount.