Low-grade mineral separation process

Abstract

The invention discloses a low-grade mineral separation process, and relates to the technical field of mineral separation. The process comprises the following steps that coarse crushing operation is conducted on ores in a raw ore bin to obtain coarse crushed products, the coarse crushed products are fed into a vibrating screen for screening, undersize products return to a cone crusher for fine crushing operation, then the undersize products are fed into the vibrating screen, oversize products fall into a fine ore bin, materials in the fine ore bin are fed into a high-pressure roller mill, and the materials are fed into a ball mill A through a feeding chute; ball-milling discharged ore is conveyed to a linear screen, the undersize products sequentially enter two nelson concentrators for reselection, and the oversize products return to the ball mill A for regrinding; and the reselected concentrate enters a Nelson table concentrator for concentration and then is subjected to flotation operation, the flotation concentrate is sold to a smeltery, the tailings enter a reselection workshop for reselection through the table concentrator, the table concentrator concentrate is a final product of the tailings reselection workshop section and returns to a ball mill B for regrinding through a hose pump, and the chute tailings and the table concentrator tailings are classified through a cyclone, subjected to sand setting and discharged to the underground for filling operation; According to the process, the ore grinding effect is good, and the ore grinding process handling ability and the ore grinding index are improved.

Description

technical field [0001] The invention relates to the technical field of mineral processing, in particular to a low-grade mineral processing technology. Background technique [0002] As we all know, beneficiation means that after the ore is crushed and ground, the different components of the ore have their own physical and chemical properties, such as particle size, shape, color, luster, specific gravity, friction coefficient, magnetism, electricity, and surface moistness. Moisture etc. According to the different properties of various minerals, we can choose different beneficiation methods to separate useful minerals from gangue minerals, and to separate various symbiotic (associated) useful minerals from each other as much as possible to remove or reduce harmful impurities to obtain The process of smelting or other raw materials required by industry, so as to make full and economical use of mineral resources. The most commonly used gold ore beneficiation methods include gra...

AI Technical Summary

Problems solved by technology

The most commonly used gold ore beneficiation methods include gravity beneficiation method, flotation beneficiation method, amalgamation gold extraction method, cyanide gold leaching, etc. Large size, low efficiency, high tailings loss, etc.; therefore, proposing a low-grade mineral processing process that can improve resource recovery and further reduce tailings loss has become the basic appeal of those skilled in the art

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