Regularities of distribution of mineral grains during reduction and determination of weight of mineral samples
Abstract
Reduction by successive division into two more or less equal parts is a common operation in mineral sampling. The weight limit to which a particular material can be reduced depends on the particle size distribution, the content of the component to be determined (useful), the magnitude and degree of irregularity of the inclusions of that component in the host rock, the specified accuracy of reduction, and the degree of confidence in obtaining a sample with the specified accuracy. However, until recently, the mathematical dependence of the reduction weight limit on these parameters has not yet been established, although this issue has been occupying the attention of specialists for many years. In the present work, the results of experimental and theoretical research are presented, which made it possible to establish the regularity of distribution of mineral grains in the parts separated by reduction and to find the mathematical dependence of the limiting weight of reduction (sample weight) on the main features of the sampled mineral.
None
References
- Andreev S.E. Sedimentation analysis at regular granulometric characterization. Zapiski Gornogo Instituta, 1948, vol. XX. (in Russian)
- Andreev S.E. Calculation of the average diameter. Gornyi Zhurnal, 1950, No. 4. (in Russian)
- Andreev S.E. About formulas of the average diameter. Gornyi Zhurnal, 1951, No. 11. (in Russian)
- Goldstein A.I. Characteristics of mineral raw materials determining the sample size necessary to achieve a given accuracy of sampling. Mineral'noe syr'e, 1935, No. 12. (in Russian)
- Dlin L.M. Mathematical Statistics in Technology. Izd-vo Sovetskaya nauka, 1951. (in Russian)
- Kallistov I.L. Methods of experimental determination of rational schemes of sample processing. Zolotaya promyshlennost', 1939, No. 12. (in Russian)
- Lokonov M.F. Determination of sampling frequency in pulp sampling at flotation plants. Nauchno-inform. byulleten', 1948, No. 3(40). (in Russian)
- Mitrofanov S.I. Study of Ore for Enrichability. Metallurgizdat, 1950. (in Russian)
- Pomorsky Y.L. Methods of Statistical Analysis of Experimental Data. GUUZ Narkomlesa SSSR, nauchno-metodicheskiy kabinet pri Lesotekhn. Akad. im. S. M. Kirova, 1940. (in Russian)
- Plaksin I.N. Assaying and Assay Analysis. Metallurgizdat, 1947. (in Russian)
- Pozharitsky K.L. Assaying of Nonferrous Metals and Gold Deposits. Metallurgizdat, 1947. (in Russian)
- Romanovsky V.I. Application of Mathematical Statistics in Experimental Work. Gostekhizdat, 1947. (in Russian)
- Reference book on enrichment of minerals. Vol. IV. Spravochnik po obogashcheniyu poleznykh iskopaemykh. Metallurgizdat, 1950. (in Russian)
- Khan G.A. Testing and Control at Enrichment Plants. Metallurgizdat, 1947. (in Russian)