Full-size-fraction dry separation clean process and system for coal-series coexisting and associated mineral resources

Abstract

The invention discloses a full-size-fraction dry separation clean process and system for coal-series coexisting and associated mineral resources. According to the process, after to-be-separated raw ore is broken and screened, oversize products enter a photoelectric separation machine to be subjected to tailing removal, products of two size fractions are obtained by further screening undersize products after drying, the undersize products enter a compound dry separation machine and a dry dense medium fluidized bed separation machine correspondingly to be subjected to separation, and concentrateand tailing are obtained; after medium solid brought out by the products is removed through a medium draining screen, one part of the medium solid enters a magnetic separation machine to be subjectedto non-magnetic material removal, magnetic material concentrate is then obtained and flows back to enter the separation machines, and the other part of the medium solid is directly recycled. The system comprises a raw ore preparation and drying part, a separation part and a medium purification circulation and density control part. By means of the full-size-fraction dry separation clean process and system, the coal-series coexisting and associated mineral of different large, medium and small particle sizes can be efficiently separated at the same time, and the problems that at present, in thedry separation field, the number of separated products is small, the concentrate quality is poor, the medium utilization rate is low and dust is excessively discharged are solved.

Description

technical field [0001] The present invention relates to the field of mineral resource sorting, in particular to a clean process and system for dry sorting of coal-measure co-associated mineral resources with full particle size. Background technique [0002] my country's coal-measure associated mineral resources not only contain a large amount of coal resources, but also a large number of other mineral resources that are symbiotic or associated with coal, such as kaolin (rock), refractory clay, diatomite, bauxite, bentonite, graphite, etc. , oil shale, gypsum, sedimentary quartzite and other minerals, especially the non-metallic mineral resources in many industries such as electronics, machinery, metallurgy, light industry, chemical industry, textiles, building materials and high-tech, have a very wide range of applications use. With the continuous increase of the society's demand for energy and the improvement of the utilization rate of resources, people pay more and more att...

AI Technical Summary

Problems solved by technology

The traditional cyclone force field and gravity field beneficiation equipment mainly use water as the medium, which consumes a lot of water resources during the separation process, and at the same time increases the moisture content of the product, which affects the application efficiency of the product

In addition, some components in coal-measure associated minerals, such as kaolin, refractory clay, and bentonite, are easy to muddy when exposed to water, which deteriorates the properties of the mineral interface and makes it difficult to separate and purify.

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