Theoretical justification of pneumatic separation for copper sulfide ore enrichment

Gravity methods of enrichment are the most common methods of mineral processing. Until the twentieth century A. D., gravity methods were the main methods of mineral processing. In practice, dry gravity methods are used as preliminary, basic, and sometimes the only methods for enrichment of some kinds of minerals. In these cases, the result of enrichment is a finished commercial product. For example, enrichment of ores of chrysotile-asbestos, power coals, construction materials, nonmetallic minerals. At the present time there are the following machines: pneumatic stripping machines are intended for coal enrichment in the air environment and in some cases can be used for ore enrichment, as well as the air stripping machine intended for asbestos ore enrichment refers to the known methods with suction of asbestos fiber released on the ore layer surface. Shelf air separation refers to the air enrichment of minerals and is intended for the separation of fine-grained bulk mixtures depending on the density, as well as the shape and size of the separated grains. The efficiency of pneumatic separation of bulk solids is affected by differences depending on the density, size and shape of the particles and in the velocity of whirling; formation of eddy. air flows in the separation zone; collisions of particles with each other and with the walls of the device; in the chamber of the device uneven distribution of velocities of air flows.

Zavyalov S. S., Mamonov R. S. Theoretical justification of pneumatic separation for copper sulfide ore enrichment. MIAB. Mining Inf. Anal. Bull. 2022;(11-1):199—209. [In Russ]. DOI: 10.25018/0236_1493_2022_111_0_199.

The study was prepared in accordance with the state assignment for research for the Ural State Mining University No. 075-03-2022-401 dated 12.01.2022.

Zavyalov S. S.¹, Engineer-researcher, e-mail: Sergey.Zavialov@m.ursmu.ru, ORCID ID: 0000-0002-2947-0458;
Mamonov R. S.¹, Engineer, Department mineral dressing, e-mail: Mamonoff_npa@mail.ru, ORCID ID: 0000-0002-9371-1762;
¹ Federal State Budgetary Educational Institution of Higher Professional Education «Ural State Mining University», 30 Kuibyshev St., Ekaterinburg, Russia, 620144.

Zavyalov S. S., е-mail: Sergey.Zavialov@m.ursmu.ru.

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