SU126353A1 - Installation for selective disintegration of diamond-containing ores - Google Patents

Description

Installations for the selective disintegration of diamond-containing ores are known, in which a successively installed jet grinders with counter-current ejectors are used as grinding apiarats.

The proposed installation is more compact compared to the known. This is achieved by the fact that the discharging device of each previous shredder is built in as a feeding device into the subsequent shredder.

The drawing shows a diagram of the Schrodetal installation.

The grinded material with lump sizes of 20-25 mm from the bin J is fed by the feeder 2 to the feed hopper 3 of the first jet grinder with a countercurrent arrangement of the ejectors. In the ejectors 4 of this shredder enters the energy carrier - overheated bunk, warmed up or cold compressed airborne. The rock particles are accelerated in the tubes and, colliding with each other in chamber 6, are crushed. Further along chutes 7, the crushed material is directed to the second grinder 8, where it is subjected to secondary crushing in the same way, etc. Depending on the strength of the crushed rock, the 1j - grinding chambers can vary from three to five.

By selecting the sizes and interposition of the booster tubes 5, as well as the parameters of the energy carrier (pressure and flow), it is possible to achieve grinding modes corresponding to the dispersion of the material entering this chamber and to ensure the safety of diamonds and other minerals and their complete release from the rock.

A sufficiently crushed material with energy carrier enters the separator 9, which is similar in design to bulk separators. The dust fraction is sucked from the separator and trapped in the cyclone 10 with the receiver 11. A fan 12 is installed on the suction. The large fraction is divided into two parts with particle sizes less than 0.5 mm, which is not used for enrichment, and more than 0.5 mm, which It is enriched for enrichment.