The number of ore samples can generally be determined by the following conditions: (1) A large number of ore samples are generally taken from the pre-bed mining area, and a small number of verified ore samples should be taken for the later mining areas. When the ore reserves of the deposit are small and the mine production period is short, the sampling by stages may not be considered. (2) The ore sample should be taken separately from different ore bodies and ore sections in the deposit to meet the different ore dressing tests. If it is not possible to separately mine or do not need separate beneficiation, it is only possible to take a mixed ore sample and conduct a beneficiation test of the mixed ore sample. (3) For ore of different types and industrial grades, when the material composition characteristics and ore properties are quite different, they should be sampled separately according to different types of ore and industrial grades, in order to facilitate separate single ore dressing tests or mixed sample dressing tests. (4) When the ore of different types and industrial grades has a large difference between the average grade of the main components and the content of the associated beneficial and harmful components, the sampling area and the middle section shall be separately sampled according to the characteristics of the grade change and the mining design. , respectively, a separate sample of ore dressing test or mixed sample dressing test. If it is not possible to separately mine or do not need separate beneficiation, it is only possible to take a mixed ore sample and conduct a sample selection test of the mixed ore sample. (5) In order to make maximum use of the national mineral resources, when there are a certain number of off-balance minerals in the deposit, the ore-extraction test ore samples of the off-balance mine should be taken separately to evaluate the possibility and rationality of recycling. (6) When the ore body, surrounding rock and stone and rock vein contain valuable, rare elements and other components that can be comprehensively recovered, the occurrence state and spatial distribution of these associated components should be studied in detail. Take a representative sample of the ore and conduct a comprehensive research on the recovery. (7) A certain number of ore body surrounding rock and stone samples should be taken to facilitate the amount of waste rock mixed in the ore mining process during the ore dressing test, and the waste rock mixing rate designed according to the development is determined; when the deposit has not been designed for mining For open pit mines, generally 5-10% (chemical mines are 3-5%), and pit mines are generally 10-25% waste rock mixed rate. (8) According to the requirements of the experimental research unit, a certain number of high-grade samples and near-mineral surrounding rock should be taken, so that the experimental research unit can adjust the grade deviation that may occur in the ore sample or meet the temporary needs in the test. (9) Rocks and minerals that represent various types and grades and surrounding rocks and girders of different lithologies and layers should be used as specimens for rock ore identification. The specific requirements are proposed by the experimental research unit. (10) Samples of tests such as crushing, grinding work index test and self-grinding medium shall be adopted. The specific requirements shall be the same as those submitted by the test research unit. Decorative Building Materials,Pvc Digital Printing Machine,Prepreg Paper Printing,Wood Grain Paper Printing Shenzhen Textalk Graphic Technology Co.,Ltd , https://www.textalkdigital.com