Rotational flow sorting method, apparatus and system for periphery adding medium flow

Abstract

The invention discloses a cyclone separation method, a cyclone separation device and a cyclone separation system; wherein, a medium flow is added from external periphery, and the invention is an overall improvement to cyclone separation methods, devices and the cyclone separation systems in prior art. The invention is characterized in that high pressure medium flow during separation is added from the most external periphery to cyclone flow field through a purpose made screen type or shutter type inner wall, the friction of the medium flow at the edge of the cyclone field can be reduced, the resistance can be reduced, and the medium flow entering into the cyclone field can perform a second allocation to misplaced material during moving to the center after penetrating separated material, thus the goal of improvement of separation efficiency is reached. The invention has the advantages that with the invention used for coal separation or mineral processing, the actual recovery rate of separated material can be improved, the wear of the cyclone can be reduced, the power of feeding system can also be reduced, the application range of the method can be broadened, and the application effect of the invention is better than the application effect of the cyclones in prior art. Compared with the prior art, the utility model has the advantages of solving the technical problem that the mineral to be separated can only be allocated once for long time, adopting a new function of second allocation, and being a completely new method, equipment and a system in coal preparation industry at home and abroad.

Description

Technical field [0001] The invention relates to a mineral processing method, mineral processing equipment and a mineral processing system, in particular to a swirl separation method, device and system in which a medium flow is added to the periphery. Background technique [0002] At present, the rotating medium flow separation method used in the domestic and foreign mineral processing industry is like the book "Mineral Processing Handbook" (Volume II, Second Subvolume) printed for the third time in October 2005, published by China Metallurgical Industry Press in January 1993. ~82 pages, as well as 118~127 and 288~292 pages of the "Mineral Processing Handbook" (Volume 3, Volume 1), as published in the second printing and publication of China University of Mining and Technology Press in October 2002 "Mineral Processing" book 159-173 pages, and as contained in the "Coal Preparation Handbook" published by China Coal Industry Press in April 1993, pages 287-301, are all passed thr...

AI Technical Summary

Problems solved by technology

Because of this characteristic of the sorting method, the method brings the mismatch phenomenon that cannot be corrected in the stratification process, so that the actual recovery rate of the sorting is low; The heaviest hard minerals in the minerals are distributed to the outermost part of the flow field under the action of the inertial centrifugal force generated by the rotating flow, and are pressed against and pressed against the inner wall of the cyclone, causing greater wear and tear on the cyclone, and due to This reason produces excessive resistance, leading to the problem of increased feeding power

Therefore, the use of this method, device and system has been accompanied by a high mismatch rate for fine-grained minerals or minerals with small differences in specific gravity, and a low recovery rate; the cyclone wears too much and has a short life; the power of the feed pump Too large and other problems, which reduces the sorting effect of the method in practice and limits the scope of use of the method

Images