Evaluation of non-separation operations of mineral engineering
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University of Mining and Metallurgy in Cracow
Publication date: 2002-01-01
Physicochem. Probl. Miner. Process. 2002;36(1):135-146
The vast majority of technological operations in mineral engineering involves separation operations in which two or more products are obtained differing in the value of a particular property that constitutes the separation characteristic. They include all enrichment, classification and dewatering operations. The determination and evaluation of the technological efficiency of such processes is the subject-matter of numerous theoretical, and particularly methodical studies, as well as control procedures that are commonly applied in industry and experimental investigations. Apart from these operations there are others that (as a rule) aim at the change of the material form without the separation of elements having common properties. Such operations include first of all comminution and inversely agglomeration (as well as briquetting and pelletizing), but also division into smaller portions (or parts) – its specific kind is sampling. These operations have crucial, though variable in importance, significance for the processing while the evaluation issue of their efficiency is practically non-existent in professional literature and in wider practical applications. The aim of this paper is to present the idea of determining the technological efficiency of such operations. Alternative principles of defining the efficiency and methods for obtaining quantitative results as well as their selection for the assumed control targets and the required evaluation accuracy are presented.
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