Technology for extracting copper from high-sulfur copper, oxygen and sulfur containing mixed type ore

Abstract

The invention relates to a technology for extracting copper from high-sulfur copper, oxygen and sulfur containing mixed type ore. The technology comprises the following steps that firstly, soluble copper is immersed in water, finely-broken raw ore and water are fed in a stirring trough to be stirred till the soluble copper is basically dissolved, and solid and liquid separation is carried out to obtain a water immersing soluble copper pregnant solution and separation leached residues; secondly, differential flotation of copper ore is carried out on the leached residues step by step, lime ground ore is added into the separation leached residues, the usage amount 1 of Z-200 and 2# oil is added for stirring and slurry mixing, copper roughing I is carried out, copper rough concentrate I and copper roughing tailings I are obtained, copper sifting I is carried out to obtain copper concentrate I, copper roughing II is carried out to obtain copper rough concentrate II and copper roughing tailings II, copper sifting II and copper sifting III are carried out on the copper rough concentrate II to obtain copper concentrate II, Z-200 and 2# oil is added in the copper roughing tailings II, and copper scavenging I and copper scavenging II are carried out to obtain copper flotation tailings and copper scavenging concentrate II; and thirdly, copper flotation tailings are used for floatation of sulfur, butyl xanthate and 2# oil are added for stirring and slurry mixing, sulfur roughing is carried out, sulfur sifting is carried out, sulfur concentrate and sulfur cleaner tailings are obtained, and sulfur scavenging concentrate and final tailings are separated through sulfur scavenging. The technology has the beneficial effects that the consumption of medicaments is small, the unit cost is low, the comprehensive recovery rate is high, and environment friendliness is achieved.

Description

technical field [0001] The invention relates to a process for extracting copper by hydrometallurgy, in particular to a process for extracting copper from high-sulfur copper-oxygen-sulfur mixed ores, which is suitable for copper extraction from high-sulfur copper-oxygen-sulfur mixed ores. Background technique [0002] With the rapid development of my country's economy, the consumption of copper is increasing year by year, resulting in the gradual reduction of high-grade copper sulfide ore resources. The development and utilization of copper oxide ore, especially refractory copper oxide ore, has become the focus of research. However, relatively high-grade copper oxide ore is often located in the secondary oxidation enrichment zone of the ore body, and its composition is generally oxidative sulfide mixed copper ore. Oxidation and sulfide mixed copper ore samples are composed of: the oxidized copper minerals are mainly malachite, and the sulfide copper minerals are mainly copper...

AI Technical Summary

Problems solved by technology

If the economical (D) method of the background technology is adopted to extract copper from such minerals, that is, first flotation reclaims copper sulfide, and then when flotation reclaims copper oxide minerals, it is found that during flotation of copper sulfide minerals, due to the Unoxidized pyrite has good floatability, so it is difficult to suppress this part of pyrite, which seriously affects the grade of copper concentrate; when copper oxide is recovered by subsequent sulfidation flotation, because the oxidized fine-grained pyrite can float Poor performance makes it difficult to separate sulfur completely, and at the same time, it will compete with copper oxide for adsorption, so it will directly affect the sulfuration flotation effect of copper oxide

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