This standard specifies the sampling and sample preparation methods for pyrite and pyrite concentrate ore products. GB/T 2460-1996 Sampling and sample preparation methods for pyrite and pyrite concentrate GB/T2460-1996 Standard download decompression password: www.bzxz.net

GB/T2460-1996
This standard amends GB/T2460-81 "Methods for sampling and preparing analytical samples of pyrite and pyrite concentrate". During the revision process of this standard, after in-depth investigation and research, and a large amount of data analysis and comparison, it is considered that the sampling volume specified in the previous version is too large. According to the general sampling principles determined by foreign standards and the verification results of the original sampling experiments, and with reference to other chemical mine sampling parameters, the total sampling volume and the amount of each sample taken at each point specified in the previous version have been appropriately adjusted. Necessary modifications have also been made to the preparation method of samples for moisture determination. This standard replaces GB/T2460--81 from the date of entry into force. This standard is proposed by the Ministry of Chemical Industry of the People's Republic of China. This standard is under the jurisdiction of the Chemical Industry Mining Design and Research Institute of the Ministry of Chemical Industry. The responsible drafting unit of this standard: Chemical Industry Mining Design and Research Institute of the Ministry of Chemical Industry. The participating drafting units of this standard: Yunfu Pyrite Enterprise Group Corporation, Nanhua Company Research Institute, Datian Pyrite, Sichuan Chemical Group Corporation, Zhanhua Enterprise Group Corporation, etc.
The main drafters of this standard are Gu Lihua and Wang Zhaowen. This standard was first issued in October 1981 and reviewed and confirmed in December 1988. 1 Scope
National Standard of the People's Republic of China
Pyrites and concentrate-
Methods for sampling and preparation sample
Pyrites and concentrate-
Methods for sampling and preparation sample This standard specifies the sampling and sample preparation methods for pyrite and concentrate ore products. 2 Referenced standards
GB/T2460--1996
Replaces GB/T2460-81
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 parties using this standard should explore the possibility of using the latest versions of the following standards. GB/T6003--85 Test sieve
3 Sampling and sample preparation tools
3.1 Sampling probe, shovel, hammer.
3.2 Crusher, grinder, reducer.
3.3 Sample container, sample bottle, scale.
3.4 ​​Test sieve (GB/T6003) R40/3 series: 500utn, 150μm. 4 Sampling method
4.1 Sampling quantity
4.1.1 The total amount of samples taken from pyrite products shall not be less than 0.5% of the delivery batch, and the amount of each sample taken shall not be less than 500g. 4.1.2 The total amount of samples taken from sulfur concentrate products shall not be less than 0.5% of the delivery batch, and the amount of each sample taken shall not be less than 50g. 4.1.3 For pyrite products with ore particle size less than 40mm, the total amount of samples taken shall not be less than one ten-thousandth of the delivery batch, and the amount of the incremental sample taken at each point shall not be less than 100g.
4.2 Operation method
4.2.1 Ore products of the same grade are a batch. When sampling, use a sampling tool to take incremental samples at a depth of 0.2m below the surface. The amount of incremental samples taken should be approximately equal.
4.2.2 When sampling, attention must be paid to the size of the ore particle size and the proportion of different colors. Random selection is not allowed. If the sampling point falls on a lump of ore with too large particle size, it needs to be crushed with a hammer and a sample representing the lump of ore is taken. 4.3 Sampling on ore piles
On the inclined surface 0.3m away from the top and bottom of the ore pile, make a cross section every 1m of the slope distance, and arrange sampling points around each cross section with a point spacing of 0.8~1㎡. The amount of incremental sample and the total amount of sample taken at each point must comply with the provisions of 4.1.1 or 4.1.2 or 4.1.3. 4.4 Sampling on vehicles and ships
When transporting by car, train or ship, arrange sampling points according to Figure 1 at 0.3~0.5㎡ away from the vehicle wall or ship navigation (the number of sampling points can be increased or decreased accordingly according to the weight of the load), with a point spacing of 0.8~1m. The amount of incremental sample and the total amount of sample taken at each point must comply with the provisions of 4.1.1 or 4.1.2 or 4.1.3.
Figure 1 Schematic diagram of sampling points
4.5 Sampling on belt conveyor
According to the total amount of ore and the conveying speed of the belt, take incremental samples at any cross section of the conveyor belt at a certain interval using an automatic sampling device or sampling tool. The amount of incremental samples and the total amount of samples taken each time must comply with the provisions of 4.1.1 or 4.1.2 or 4.1.3. 5 Sample preparation
5.1 Pyrite
5.1.1 Mix the incremental samples taken from the same batch, crush, sieve and mix them, and reduce them step by step according to formula (1): Q Kd?
Where: Q-minimum reliable mass of the reduced sample, kgd-maximum particle size of the reduced sample, mm; K-reduction coefficient, take 0.1.
If there is no reducer, manual reduction can be used, and the reduction method adopts the quartering method. (1)
5.1.2 Prepare the sample according to 5.1.1 until the particle size is less than 10mm, mix thoroughly, reduce to 10kg, take 2kg, and pack them equally into two clean, dry ground-mouth bottles, seal them and affix labels, indicating the production unit, product name, grade, batch number, sampling date, location and name of the sampler. One bottle is a laboratory sample for moisture determination; the other bottle is a preparatory sample with a shelf life of two months for re-testing. 5.1.3 Prepare the remaining sample according to 5.1.1 until the particle size is less than 500μm, reduce to 250g, and pack them equally into two clean, dry ground-mouth bottles, seal them and affix labels, indicating the production unit, product name, grade, batch number, sampling date, location and name of the sampler. One bottle is a laboratory sample and the other is a preparatory sample with a shelf life of two months for re-testing. 5.1.4 After receiving the samples, the laboratory will use the bottles containing the coarse samples for water content determination, and the bottles containing the fine samples will be ground until all of them pass through the 150μm test sieve, mixed, and placed in clean, dry ground-mouth bottles for determination of other items other than water content. 5.2 Sulfur concentratewwW.bzxz.Net
5.2.1 After combining the samples taken from the same batch, mix them thoroughly, reduce them to 500g, and place them in two clean, dry ground-mouth bottles in equal amounts. After sealing, label them with the production unit, product name, grade, batch number, sampling date, location and name of the sampler. One bottle is the laboratory sample, and the other is the sample for examination, which has a shelf life of two months for re-examination. 5.2.2 After receiving the samples, the laboratory will first take a quantitative sample for water content determination. The remaining samples will be ground until all of them pass through the 150um test sieve, mixed, and placed in clean, dry ground-mouth bottles for determination of other items other than water content.
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