Some standard content:
Industry Standard of the People's Republic of China
HG/T 3578-86
Serpentine Ore
Published on March 14, 1990
Published by the Ministry of Chemical Industry of the People's Republic of China and implemented on January 1, 1991
Industry Standard of the People's Republic of China
Serpentine Ore
Subject Content and Scope of Application
ZBD51008--90
This standard specifies the technical requirements, sampling and sample preparation methods, test methods and inspection rules for the quality of serpentine ore products. This standard applies to serpentine ore used in the production of calcium magnesium phosphate fertilizer by blast furnace method. Reference standardswwW.bzxz.Net
GB6003 Test sieve
ZBD51004
Analysis method of serpentine ore
3 Technical requirements
Serpentine ore should meet the following requirements:
Magnesium oxide (MgO) content, %
Silicon dioxide (SiO2) content, %
Particle size, mm
Among which the following are allowed:
≥125,%
≤10,%
Superior grade
Note: ①The particle size of unprocessed ore can be determined by agreement between the supplier and the buyer; ②The content of chemical components is calculated on a dry basis. Sample collection and preparation method
Serpentine ore should be sampled in the delivery batch. Samples for chemical analysis and samples for particle size determination should be taken separately. 4.1 Sampling method
First grade
10~125
Second grade
The amount of sample taken from each point should be similar. The amount of sample taken for chemical analysis should not be less than one ten-thousandth; the amount of sample taken for particle size determination should not be less than 100kg, repeated twice. 4.1.1 Train sampling
When the train car is 30t, take sample from 8 points according to Figure 1. When the train car is 50 or 60t, take sample from 11 points according to Figure 2. Approved by the Ministry of Chemical Industry of the People's Republic of China on March 14, 1990 and implemented on January 1, 1991
ZBD51008—90
The sampling point should be not less than 0.3m away from the car wall and bottom, and not less than 0.2m away from the surface. 4.1.2 Sampling of ships
Arrange sampling points according to cabins, with row spacing not less than 1.0m, point spacing not less than 1.5m, and take incremental samples at the intersection of row spacing and point spacing. The sampling point should be not less than 0.3m away from the ship wall and bottom, and not less than 0.2m away from the surface. 4.1.3 Sampling of vehicles
Take incremental samples from 5 points according to Figure 3
The sampling point should be not less than 0.3m away from the vehicle wall and bottom, and not less than 0.2m away from the surface. 4.1.4 Sampling of ore piles
4.1.4.1 Conical ore piles
Arrange sampling points according to the cross-section of the natural pile shape of the ore pile. The row spacing should be not less than 1.0m, point spacing should be not less than 1.5m, and take incremental samples at the intersection of row spacing and point spacing.
The sampling point should be not less than 0.3m away from the top and bottom, and not less than 0.2m away from the surface. 4.1.4.2 Square or rectangular ore piles
Arrange sampling points in a plane. The row spacing shall not be less than 1.0m, and the point spacing shall not be less than 1.5m. Take incremental samples at the intersection of the row spacing and the point spacing. The sampling point should be not less than 0.3m from each side (or bottom) and not less than 0.2m from the surface. 4.1.5 Conveyor belt sampling
Use manual or automatic sampling devices to periodically take incremental samples on the cross section of the conveyor belt. Sampling can be carried out at any position of the conveyor belt or at the drop point of the ore, but it must include all products on the cross section. 4.2 Sample preparation
4.2.1 The sample for particle size determination should be not less than 100kg, and all of them should be sieved on site for determination. The test method is shown in 5.3 of this standard. 4.2.2 The individual samples mixed in batches are the samples of that batch. 4.2.3 The mixed samples need to be crushed, pulverized, ground, etc. After each step, the sample must be sieved, mixed and quartered. Each reduction should be carried out according to formula (1):
ZBD51008-90
Where: Q--the minimum reliable weight of the sample, kg; d--the maximum diameter of the sample particles, mm;
K--the uniformity coefficient of the ore, which is 0.1 for serpentine ore. (1)
4.2.4 After all the samples prepared in 4.2.3 pass through the 1mm sieve, they are reduced to about 0.2kg, ground and all pass through the 106μm sieve, and then quartered to take two equal parts, which are packed in two clean and dry ground-mouth bottles, sealed, and marked with: the name of the production unit, product name, grade, batch number, sampling personnel and sampling date. One bottle is a laboratory sample, which is sent to the laboratory for inspection; the other bottle is a sample for re-inspection in case of disputes in the future. The sample shelf life is two months.
5 Test method
5.1 Determination of magnesium oxide content
Test according to the determination method of calcium and magnesium content of serpentine ore in 3 ZBD51004. 5.2 Determination of silicon dioxide content
Test according to the determination method of silicon content of serpentine ore in 1 ZBD51004. 5.3 Determination of particle size
5.3.1 Principle of method
The sample is sieved through the specified mesh, and the part under the sieve and the part above the sieve are weighed respectively, and the percentage content is calculated. 5.3.2 Instrument
5.3.2.110 and 125mm metal perforated plate test sieves: Made in accordance with the technical requirements of GB6003 test sieves. 5.3.2.2 Scale
5.3.3 Sample
Take samples separately according to 4 of this standard.
5.3.4 Determination method
5.3.4.1 Determination method for particle size larger than 125mm Weigh more than 100kg of sample (accurate to 0.1kg), take out the ore in the sample that may be larger than 125mm in particle size, put it into the sieve holes of a 125mm metal perforated plate at any angle, weigh the amount that cannot pass through, and calculate its percentage content according to formula (2): m
Where: 1 - percentage content of particle size larger than 125mm, %; ml - mass of particle size larger than 125mm, kg; m - mass of sample, kg.
5.3.4.2 Determination of particle size less than 10mm·(2)
5.3.4.1 The sample is placed on a 10mm perforated metal plate test sieve twice, sieved manually, and vibrated for 15s. The part under the sieve is weighed and its percentage content is calculated according to formula (3):
Wherein: a2——Percentage content of particle size less than 10mm, %; a——Mass of particle size less than 10mm, kg;
m——Mass of sample, kg.
5.3.5 Precision
m2×100
·(3)
ZBD51008—90
The difference between the parallel determination values of this method shall not exceed 1.0%. 6 Inspection rules
6.1 Serpentine ore shall be inspected by the technical inspection department of the production unit. The production unit shall ensure that the serpentine ore shipped from the mine meets the technical requirements of this standard.
6.2 Serpentine ore of the same quality sent to the same user is a batch, and a quality certificate of a certain format shall be attached. The certificate shall include: name of the production unit, product name, product grade, quality index, batch weight, batch number, vehicle number, shipping date and this standard number. 6.3 The user unit has the right to verify the chemical composition of the received serpentine ore according to the inspection rules specified in this standard. If there is any objection, it shall be resolved through negotiation by both parties, or it may be re-verified by the Chemical Mineral Quality Monitoring Center of the Ministry of Chemical Industry or an arbitration unit selected by agreement of both parties in accordance with this standard.
7 Marking, packaging, transportation, storage
7.1 Serpentine ore is transported in bulk by train, car or ship. 7.2 During the storage and transportation of serpentine ore, dust should be avoided to pollute the environment and increase the powder rate. 8 Safety
Serpentine ore contains silicate rock dust and a small amount of asbestos fiber. During loading, unloading and sampling, protective equipment such as work clothes, work hats and masks should be worn.
Additional instructions:
This standard is under the jurisdiction of the Chemical Industry Design and Research Institute of the Ministry of Chemical Industry. This standard was drafted by the Chemical Industry Design and Research Institute of the Ministry of Chemical Industry. The main drafters of this standard are Li Donghao and Xu Xiulan. People's Republic of China
Industry Standard
Glass Ore
ZBD51008-90
Published by China Standards Press
(Beijing Fuwai Sanlihe)
Printed by Beijing Printing Factory of China Standards Press, issued by Beijing Distribution Office of Xinhua Bookstore
Sold by Xinhua Bookstores in various places
Copyright is exclusive and reproduction is prohibited
Format 880× 12301/16
First edition in December 1990
Printing sheet 1/2
2 Word count 8000
First printing in December 1990
Print run 1-1700
Book number: 155066·2-7704
Price 0.50 yuan
Heading 150-35
98-8298
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