HG/T 2956.2-2001 Boron and Magnesium Ore Sampling and Sample Preparation Method HG/T2956.2-2001 Standard Download Decompression Password: www.bzxz.net

1cs 73.080
Chinese Chemical Industry Standard
HG/T 2956.2~2956.82001
Analytical methods for ascharite ores2002-01-24Promulgatedbzxz.net
2002.0701Implementation
Promulgated by the State Economic and Trade Commission
Registration No.: 10099—2002
HC/12956.2—2001
This standard is based on the standard HC/T2155.19824 on the collection and preparation of analytical test samples for iron ore.
This standard is similar to HG/2562-1$62 in terms of main technical contents, except for improvements in sample preparation and the addition of reduction formulas. This standard is based on H/2956.1-1952, TG/T2956.2-1982: This standard was proposed by the Policy and Regulations Department of the State Petroleum and Chemical Industry Bureau of South China. This standard was drafted by the Chemical Industry Chemical Standardization Technical Committee: The Ministry of Chemical Industry Lianyungang Design Research Institute. The main technical authors of this standard are: Gong Heping, Zhang Xiaomei. The standard was first issued in 1966 as the standard issued by the Ministry of Chemical Industry HG1-352-66 Ascharlite Sampling and Sample Preparation Methods, and was issued as the national standard GB3447-1-82 Ascharlite Sampling and Sample Preparation Methods in 1982. It was revised into a recommended chemical industry standard in 1987. The original national standard GP8417.1-33 GB3447.3-82 was renumbered as HG/T29E6.1:33 HG/T2956.2-1821 Scope
Chemical Industry Standards of the People's Republic of China
Ascharlite Sampling and Sample Preparation Methods
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This cup standard specifies the sampling and sample preparation methods of magnesium ore. The standard is used as the sampling and preparation of ore analysis samples. 2 Reference standards
IIG/T 2956.2—2001
HG/T 2556.11932
HG/T 2556.7-1132
The following standards contain clauses that become the clauses of the standard through reference in this standard. When this standard is popped up, the version number shown is valid. All standards will be revised. The parties using this standard should explore the possibility of using the latest version of the standard. GH/T5003.1195? Jin Guang reverse number network test sieve GB/T 78—118 chemical products group general 3 Sampling and sample preparation tools
3.1 Shovel, flag, iron plate.
3.2 Crushing Machine, grinder, reducer:
3.3 companion Shengxiang device, sample slope,
3.4 ​​test sieve (GB/T63._) R41/3 series 425/m, 135m4 sampling method
4.1 sampling number plate
50t as a batch, the total sampling load is not less than 80 sample plates of the batch, about 80, the number of sampling plates for cars is determined: the small car (or car) is a column unit, and the minimum number of sampling units selected by each batch of expansion (expansion of the total number of cars) is based on GB/T6 676--1985 6.6.1. When the total number of cars (number of cars) is less than 10, sample each box. When the total number of cars (number of cars) is greater than 10, the sample shall be determined according to Table 2 of GB/5478--1986. 4.2 The use of the force method
is detailed. In the next month, the sample is collected at a depth of more than 0.1m from the bottom and less than 0.1m from the surface. The sample quantity taken from the batch is close to the bottom. When taking the sample, you must pay attention to the total ore particles. The color does not change and the floating light does not float. Do not randomly select. If the sample point falls on the particle If the ore is too large, it needs to be crushed and the sample of the ore is taken: 4.2.1 Pile sampling
On the whole surface of the ore pile, starting from about 300 meters from the bottom, draw several horizontal lines every 1 meter or so to the top, and arrange the sampling points at the corresponding positions. The amount of the sample taken at each point and the total amount of sampling should comply with 4.1 Heat determination. 4.2.2 Vehicle and ship sampling
Approved by the National Economic and Trade Commission on January 24, 2002, 2002-07-01 2956. 2-.. 2001
When loading out of a train, for a car with a load of 50, at a height of about 0.:m, 50 sampling points are selected according to the scale shown in Figure 1. The sampling points of different cars can be increased or decreased according to the load size, and the total amount of the sample taken at each point shall meet the requirements of 4.1. Figure 1 Sampling point arrangement diagram
5 Sample preparation method
5.1 The samples of the same batch are combined, crushed, passed through a grinder, and reduced (the processing process can be mixed by the steel method or other methods, and reduced by the reducer component method, etc.), and crushed and reduced step by step according to formula (1): m=K.
Where: m is the minimum reliable quality of the reduced sample, : the maximum particle size of the reduced sample, mm!
K—Shrinkage system, take 0, 1:
5.2 The sample is prepared as in 5.1. Until the particles are less than 125\m, mix thoroughly, gradually separate 350%, and pack the samples in equal amounts into 10 bottles (or plastic bottles): After the sample is tested, label it with the name of the production unit, production station, grade, batch number, sample date, location and name of the sampler. One serving (bag) is used as a test sample, and it is sent to the laboratory and one (bag) is used for preparation. The preparation is kept for one month. 5.3 After receiving the sample, take out about 50g, pass all of it through a 12b\m test sieve, mix thoroughly, and put it in a grinder (or sample belt) for the determination of the item.
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