HG/T 2673-1995 Phosphate rock for acid processing HG/T2673-1995 Standard download decompression password: www.bzxz.net

Chemical Industry Standard of the People's Republic of China
HG/T2673—1995
Phosphate rock for acid processing
Published on April 2, 1995
Ministry of Chemical Industry of the People's Republic of China
Implemented on January 1, 1996
WHG/T2673—1995
This standard has revised ZB/TD51001—86 "Phosphate rock for acid processing of phosphate fertilizers". The principles of this revision are to give full consideration to the use requirements, closely combine with the actual situation, reasonably use national resources, promote technological achievements, improve economic benefits, achieve advanced technology, reasonable economy, convenient use, and coordinate with relevant standards. In this revision, the classification of the previous version is adjusted according to GB/T12707-91 "Guidelines for the Classification of Industrial Product Quality", and the control items are partially adjusted to three levels, and R20s/P20s is used to replace R2O3, so as to be more in line with the actual production. The technical indicators are adjusted according to the process requirements, combined with the domestic resource situation, production status and opinions of all parties, and with reference to the international commodity mine situation; the compilation rules are carried out in accordance with GB/T1.1-1993.
This standard replaces the original professional standard ZB/TD51001-86 of the People's Republic of China from the date of implementation. This standard is proposed by the Technical Supervision Department of the Ministry of Chemical Industry of the People's Republic of China. This standard is under the jurisdiction of the Chemical Mining Design Institute of the Ministry of Chemical Industry. The responsible drafting unit of this standard: Chemical Mining Design Institute of the Ministry of Chemical Industry. The participating drafting units of this standard: Jinhe Phosphate Mine, Kaiyang Phosphate Mine Mining Bureau, Yunnan Phosphorus Chemical Industry (Group) Company, Jingxiang Phosphorus Chemical Industry Company, Yichang Phosphorus Chemical Group Company, Xinyang Phosphate Fertilizer Plant, etc. The main drafters of this standard: Zhao Zhiquan, Wang Hailiang, Wang Heping. This standard was first issued in August 1986.
This standard is entrusted to the Chemical Industry Mining Design and Research Institute of the Ministry of Chemical Industry for interpretation. I
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Chemical Industry Standard of the People's Republic of China
Phosphate ore for acid processing
This standard specifies the technical requirements, test methods and inspection rules for phosphate ore for acid processing. HG/T2673—1995
This standard applies to phosphate ore for the production of phosphoric acid, ammonium phosphate, heavy superphosphate, nitrophosphate fertilizer and superphosphate. The qualified products in this standard are only applicable to phosphate ore for the production of superphosphate. 2 Referenced standards
The provisions contained in the following standards constitute the provisions of this standard through reference in this standard. When this standard is published, the versions shown are valid. All standards will be revised, and the parties using this standard should explore the possibility of using the latest versions of the following standards. GB/T1250—89 Methods for expressing and determining limit values ​​GB/T1868—1995 Methods for sampling and sample preparation of phosphate rock and concentrate GB/T1870—1995 Determination of moisture content in phosphate rock and concentrate - Gravimetric method GB/T1871.1—1995 Determination of phosphorus pentoxide content in phosphate rock and concentrate - Quinoline phosphate gravimetric method and volumetric method GB/T1871.2—1995 Determination of iron oxide content in phosphate rock and concentrate - Volumetric method and spectrophotometric method GB/T1871.3—1995 Determination of aluminium oxide content in phosphate rock and concentrate GB/T1871.5—1995 Determination of magnesium oxide content in phosphate rock and concentrate GB/T1876—1995 Determination of carbon dioxide content in phosphate rock and concentrate 3 Requirements bzxZ.net
The technical indicators of phosphate rock for acid processing shall comply with the requirements of Table 1. Table 1 Technical Indicators
Phosphorus pentoxide (P205) content, %
Magnesium oxide (MgO)/phosphorus pentoxide (P205), %R20s/phosphorus pentoxide (P205), %Carbon dioxide (CO2) content, %
1Moisture content is calculated at the delivery location and should be less than or equal to 8.0%. 2Except for moisture, the contents of all components are calculated on a dry basis. Superior quality
Volumetric method and spectrophotometric method
Flame atomic absorption spectrometry and volumetric method
Gas volumetric method
First-class quality
Qualified quality
3When only MgO/P2Os or ROs/P2Os exceeds the standard, and the other is lower, the MgO/P2O index is allowed to increase (or decrease) by 0.4%, but the R20s/P20s index should be reduced (or increased) by 0.6%. 4The content of phosphorus pentoxide (P2O5) in qualified phosphate rock should be greater than or equal to 26.0%. 5. Requirements for impurities in qualified products shall be implemented in accordance with the contract
Approved by the Ministry of Chemical Industry of the People's Republic of China on April 2, 1995 and implemented on January 1, 1996
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4.1 Preparation of analytical samples of phosphate rock for acid processing shall be implemented in accordance with GB/T1868.
4.2 Decomposition of samples
HG/T2673-1995
Acid dissolution method (aqua regia dissolution method) shall be adopted. Alkali fusion method or acid dissolution method (aqua regia dissolution method) can be adopted for phosphate rock, but alkali fusion method shall be adopted for arbitration analysis.
4.3 Determination of phosphorus pentoxide (P205) content shall be implemented in accordance with GB/T1871.1.
4.4 Determination of magnesium oxide (MgO)/phosphorus pentoxide (P2O5) 4.4.1 The determination of magnesium oxide (MgO) content shall be carried out in accordance with GB/T1871.5. 4.4.2 Expression and calculation of results
The value X1 of magnesium oxide (MgO)/phosphorus pentoxide (P2Os) shall be calculated according to formula (1): Xt=
Wherein: S1—the percentage of phosphorus pentoxide determined in accordance with GB/T1871.1 S2—the percentage of magnesium oxide determined in accordance with GB/T1871.5 4.5 Determination of trioxide (R2O3)/phosphorus pentoxide (P2Os) 4.5.1 The determination of iron oxide (Fe2O3) content shall be carried out in accordance with GB/T1871.2. 4.5.2 The determination of aluminum oxide (A120) content shall be carried out in accordance with GB/T1871.3. 4.5.3 Expression and calculation of results
The value of dioxide (R203)/phosphorus pentoxide (P20s) X2 is calculated according to formula (2): Ss+S4×100
Wherein: S1——the percentage of phosphorus pentoxide determined according to GB/T1871.1, S3——the percentage of iron oxide determined according to GB/T1871.2, S4——the percentage of aluminum oxide determined according to GB/T1871.34.6 Determination of carbon dioxide (CO2) content
According to GB/T1876.
4.7 Determination of water (H20) content
According to GB/T1870.
5 Inspection rules
5.1 The sampling of analytical samples of phosphate rock for acid processing shall be carried out according to GB/T1868. 5.2 Ores of the same grade and sent to the same user at the same time are considered a batch. (1)
5.3 Each batch of ore shall be inspected by the quality inspection department of the production unit, and the production unit shall ensure that the phosphate ore supplied meets the technical requirements of this standard.
5.4 The user has the right to inspect the quality of the received phosphate ore in accordance with the provisions of this standard. If there is any objection, it should be raised within 15 days of arrival.
5.5 This standard adopts the "rounded value comparison method" specified in GB/T1250 to determine whether the inspection results meet the requirements of the standard. 5.6 When the supply and demand parties have objections to product quality and need arbitration, the relevant product quality arbitration provisions in the "Product Quality Law of the People's Republic of China" shall be followed.
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HG/T2673—1995
6.1 Each batch of phosphate rock should have a quality specification, which includes the name of the production unit, product name, product grade, quality index, product net weight, batch number, delivery date and this standard number. 6.2 Phosphate rock from different delivery batches should be stacked separately. W.
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