A beneficiation process for flotation treatment of medium ore in slag

Abstract

The invention discloses a mineral processing technology for floatability treatment on minerals in furnace slag. The mineral processing technology comprises the following technological processes of sequentially performing mineral milling treatment with a ball mill and classification with a classifier on the furnace slag, enabling settled sands obtained after classification to return to the ball mill, performing roughing on mineral slurry which overflows after classification to obtain rough concentrates and middlings I, performing scavenging on the middlings I to obtain middlings II and tailings, conveying the middlings II to a middling feeding device, controlling the concentration of the underflow of the middlings II with the middling feeding device to reach 72-75 percent, then performing mineral milling with the ball mill, enabling the mineral slurry subjected to mineral milling with the ball mill and the mineral slurry subjected to overflowing with the middling feeding device to entera pump pool together, lifting the mineral slurry in the pump pool to a hydrocyclone for classification, processing the mineral slurry subjected to classification and overflowing with the hydrocyclonewith a flotation system again to obtain concentrates I and tailings, and performing ball milling with the ball milling on the settled sands subjected to classification with the hydrocyclone. For themineral processing technology provided by the invention, by adding the middling feeding device and performing milling firstly and then processing, the recovery rate of copper metal is effectively increased.

Description

【Technical field】 [0001] The invention relates to the technical field of flotation of ore in slag, in particular to a beneficiation process for flotation treatment of ore in slag. 【Background technique】 [0002] In the flotation process, the selected tailings or the foam products of scavenging are commonly called middle ore. Generally, the grade of middle ore is lower than that of concentrate but higher than that of raw ore, and its floatability is also lower than that of concentrate but higher than that of tailings. mine. For the treatment of middlings, it is first necessary to analyze the condition of the middlings, study the buoyancy of the middlings and the requirements for the quality of the concentrate, and then determine the treatment method for the middlings. Whether the medium ore treatment method is appropriate directly affects the recovery rate of the available resources in the slag, and has a great relationship with improving the beneficiation index. The existi...

AI Technical Summary

Problems solved by technology

It is difficult to efficiently recover metal copper by using this process to treat the ore in the slag, and the recovery rate of the available resources in the slag is low, and it is difficult to achieve the ideal technical index

After analysis, it is found that the main influencing factors are as follows: First, the flotation reagents are contained in the pulp of graded overflow, and the monomer dissociation degree of copper minerals is insufficient, resulting in poor floatability of medium ore and unsatisfactory flotation effect 2. Because the concentration of medium ore is about 30%, it cannot directly enter the ball mill for grinding, resulting in low recovery efficiency of medium ore in slag and large energy consumption

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