A Flotation Separation Method of Copper, Lead, Zinc and Arsenic in Complex Polymetallic Sulfide Ore

Abstract

The present invention relates to the field of metallurgy technology, and discloses a complex polymetallic sulfide ore copper-lead-zinc-arsenic flotation separation method, including the following steps: Step S1: ore grinding operation: crushing the raw ore and putting it into a ball mill with water Grinding and discharging conditions of the ball mill are that the grinding fineness reaches ‑0.074mm, accounting for 65-70%; Step S2: Copper, lead, zinc and arsenic mixed flotation operation: add dilute sulfuric acid to the flotation machine to adjust the pH value of the pulp to the weakest Alkaline, with butyl xanthate as collector and terpineol oil as foaming agent, and after stirring separately during the addition process, one roughing, three times of refining and two sweeping are carried out to obtain copper, lead, zinc and arsenic mixed concentrate mines and tailings. The medicament used in the design of the present invention is a conventional mineral dressing medicament, which has no pollution to the environment, is cheap, is easy to buy in the market, and is convenient for cost control. The intermetallic content in the product is low.

Description

technical field [0001] The invention relates to the technical field of metallurgy, in particular to a flotation separation method for copper, lead, zinc and arsenic of complex polymetallic sulfide ores. Background technique [0002] Nonferrous metal mineral resources play an important role in the national economy and are widely used in various industries and fields. Polymetallic sulfide ore is the largest mineral resource for extracting non-ferrous metals. In recent years, continuous development has led to the depletion of high-grade and high-quality resources. At present, the types of copper, lead and zinc resources are complex, the content of useful minerals is relatively low, and the intercalation relationship between various minerals is complex. Copper-lead-zinc polymetallic ore has become a difficult problem in the beneficiation of polymetallic sulfide ore. In addition, polymetallic sulfide ores are often associated with arsenic-containing minerals. Arsenic is a toxic ...

AI Technical Summary

Problems solved by technology

[0004] The priority flotation process and the partial mixed priority flotation process both use sulfur compounds as collectors to float non-ferrous metal sulfides. During the flotation process, arsenic-containing minerals are often floated into the concentrate together, which affects the quality of the concentrate. Cause loss and waste of arsenic resources

For polymetallic sulfide ores with close mineral intergrowth and fine particle size, partial mixed preferential flotation process is used to obtain copper-lead mixed concentrate. Currently, the most effective method for copper-lead separation is to use cyanide-inhibited copper-leaved lead and potassium dichromate method to suppress lead and float copper, its disadvantage is that cyanide is highly toxic and dichromate ion will cause serious pollution to the environment

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