Iron tailing dry separation system

Abstract

The invention discloses an iron tailing dry separation system. Products coarsely crushed by a jaw crusher I are fed into a grizzly feeder to be pre-screened, qualified products are sieved out, oversize products of the grizzly feeder are fed into a jaw crusher II, crushed products of the jaw crusher II and undersize products of the grizzly feeder are fed into a three-layer vibrating screen together, the oversize products on an upper-layer screen of the three-layer vibrating screen are fed into a cone crusher I to be secondarily crushed, secondarily crushed products are fed into the three-layer vibrating screen, the oversize products on a lower-layer screen of the three-layer vibrating screen are subjected to dry separation by a magnetic pulley, rough concentrates after dry separation of the magnetic pulley are fed into a cone crusher II to be crushed finely, and the crushed products are returned into the three-layer vibrating screen to form closed-circuit crushing screening. The iron tailing dry separation system is simple and practical, the new strong-magnetic plate-type dry separation machine can effectively extract iron in iron tailing, ore sand size grading is realized, use in the follow-up procedures is convenient, the iron tailing can be comprehensively utilized, the comprehensive utilization of resources is realized and the damage of the iron tailing to the environment is reduced.

Description

technical field [0001] The invention relates to the technical field of comprehensive utilization of iron tailings resources, in particular to an iron tailings dry separation system suitable for extracting iron concentrates from iron tailings and classifying ore sand. Background technique [0002] Steel is an indispensable material in industrial development, and the demand is huge. At the same time, China is also the world's largest steel producer. A large amount of iron ore is needed in the steelmaking process. Domestic iron ore raw materials are relatively abundant, but the grade is relatively low, and a large amount of low-grade ore is produced during the mining process; at the same time, a large amount of iron tailings will also be produced during the iron ore beneficiation process mine. A large number of iron tailings not only occupy land, but also pollute the environment, causing potential safety hazards in tailings mining areas. At the same time, iron tailings al...

AI Technical Summary

Problems solved by technology

A large amount of iron ore is needed in the steelmaking process. Domestic iron ore raw materials are relatively abundant, but the grade is relatively low, and a large amount of low-grade ore is produced during the mining process; at the same time, a large amount of iron tailings will also be produced during the iron ore beneficiation process mine

A large number of iron tailings not only occupy land, but also pollute the environment, causing safety hazards in tailings mining areas

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