HG/T 2251-1991 Celestite Ore HG/T2251-1991 Standard Download Decompression Password: www.bzxz.net

Chemical Industry Standards of the People's Republic of China
HG2251~2252-91
Celestine Ore Standards
Published on November 15, 1991
Implemented on July 1, 1992
Published by the Ministry of Chemical Industry of the People's Republic of China. Download all kinds of standard industry materials for free HG2251-91
Celestine Ore
Celestine Ore Sample Collection and Preparation Methods HG2252-91
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Chemical Industry Standards of the People's Republic of China
Subject Content and Scope of Application
This standard specifies the technical requirements, test methods and inspection rules for celestine ore. This standard applies to celestine ore products for the production of strontium carbonate and other strontium compounds. 2 Reference standards
GB9018.1 Determination of strontium and calcium content in celestite ore EDTA volumetric method GB9018.2 Determination of barium content in celestite ore Chromic acid lock volumetric method GB9018.4 Determination of calcium and magnesium content in celestite ore Atomic absorption spectrometry GB9018.10 Determination of adsorbed water content in celestite ore Gravimetric method 3 Technical requirements
Celestite ore quality should meet the technical requirements in the following table: Item
Silver (in Srso,), %
Lock ( Calcium (calculated in Bo), %
Calcium (calculated in Cao), %
Moisture (H, O), %
Superior qualitybzxZ.net
First quality
Second quality
HG2251-91
Third quality
Plate and flotation concentrate moisture ≤10
Note: ①The content of each component, except moisture, is calculated on a dry basis. The moisture is calculated at the delivery location. ②The content of strontium carbonate in celestite ore associated with strontium ore shall be deducted by mutual negotiation between the supply and demand parties. 4 Test methods
4.1 The sampling and preparation of test samples shall be carried out in accordance with HG2252. 4.2 The determination of strontium content shall be carried out in accordance with GB9018.1. 4.3 The determination of barium content shall be carried out in accordance with GB9018.2. 4.4 The determination of calcium content shall be carried out in accordance with GB9018.1 or GB9018.4. 4.5 The determination of water content shall be carried out in accordance with GB9018.10. 5 Inspection rules
Fourth grade
Not specified
Not specified
5.1 Each batch of celestite ore shall be inspected by the quality inspection department of the production unit. The production unit shall ensure that all quality indicators of the delivered batch of celestite ore meet the technical requirements of this standard. The Ministry of Chemical Industry of the People's Republic of China approved the standard on November 15, 1991 and implemented on July 1, 1992
HG2251-91
5.2 The user may inspect the quality of the received celestite ore in accordance with the provisions of this standard. Any objection should be raised within 15 days after the arrival of the entire batch.
5.3 When the supply and demand parties have disputes over the quality of celestine ore and need arbitration, the "Interim Measures for National Product Quality Arbitration Inspection" shall be followed.
6 Marking, packaging, transportation, storage
6.1 Each batch of celestine ore should be accompanied by a quality specification, indicating the name of the ore production unit, ore name, grade, quality index, net weight, batch number, delivery date and the number of this standard. 6.2 Heavy and flotation concentrates or powder ore can be packaged in plastic woven bags, and lump ore can be transported in bulk. 6.3 Celestine ore can be transported by train, car or ship. 6.4 Ores from different delivery batches should be stacked separately. Additional remarks:
This standard was proposed by the Science and Technology Department of the Ministry of Chemical Industry of the People's Republic of China. This standard is under the jurisdiction of the Chemical Industry Mining Design Institute of the Ministry of Chemical Industry. This standard was drafted by the Chemical Industry Mining Design Institute of the Ministry of Chemical Industry. The main drafters of this standard are Gu Lihua and Wang Heping. 21
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