Calculation of sample weight for sieve analysis
Abstract
Available recommendations on the methodology of determining the weight of samples for sieve analysis are not always justified and controversial.In theoretical studies on this issue, some methodological provisions are not convincing enough. In particular, the fundamental principle of determining the weight of the sample, which states: “It is required to determine the weight of the sample, the sieve analysis of which with a probability, however close to one, will give a result dcv, lying within (1 ± 0.02) Dcv. Since the sample is intended to determine in bulk material quantitative ratios of grains of different sizes, it is necessary that the number of grains in each class of sample material corresponds to their actual numerical proportion in the sample mass, which should be the basis for calculating the weight of the sample.
References
- Andreev S. E. On the formulas of the average diameter. Mining J., No. I, 1951.
- Andreev S. E., Tovarov V. V., Perov V. A. Laws of Grinding and Calculation of Characteristics of Granulometric Composition. Metallurgizdat, 1959.
- Krasnov D. A. Regularities of distribution of mineral grains at reduction and determination of weight of samples of minerals. Journal of Mining Institute, vol. XXXII, iss. 3, 1956.
- Levenson L. B., Preigerzon G. I. Crushing and screening of minerals. Gostoptekhizdat, 1940.
- LokonovM. F. Testing at enrichment plants. Gosgortekhizdat, 1961.
- Preigerzon Z. G. Coal Enrichment. Nedra, 1964.
- Yudenich G. I. Enrichment of ferrous metal ores. Metallurgizdat, 1948.