Complex multi-metal sulfide ore copper-lead-zinc-arsenic flotation separation method

Abstract

The invention relates to the technical field of metallurgy, and discloses a complex multi-metal sulfide ore copper-lead-zinc-arsenic flotation separation method which comprises the following steps: S1, ore grinding operation, specifically, crushing raw ore, adding the crushed raw ore and water into a ball mill, and grinding the crushed raw ore, wherein the discharge condition of the ball mill is that the ore grinding fineness reaches the standard that 0.074 mm fineness accounts for 65-70%; and S2, copper-lead-zinc-arsenic bulk flotation operation, specifically, adding dilute sulfuric acid intoa flotation machine to adjust the pH value of ore pulp to be weakly alkaline, using butyl xanthate as a collecting agent and terpenic oil as a foaming agent, and performing primary roughing, tertiaryconcentration and secondary scavenging after stirring is conducted in the adding process to obtain copper-lead-zinc-arsenic bulk concentrates and tailings. Reagents used in the method are conventional beneficiation reagents and are free of pollution to the environment, low in price, and easy to purchase in the market, control cost is convenient, good copper-lead-zinc-arsenic valuable element separation effect can be achieved, and the obtained concentrate products are high in quality and low in mutual metal content.

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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