Copper and sulphur separation method for copper-sulphur ore

Abstract

The invention provides a copper and sulphur separation method for copper-sulphur ore and relates to a method for separating copper from sulphur in copper-sulphur ore flotation rough concentrate. The copper and sulphur separation method for the copper-sulphur ore is characterized in that the steps of a treating process comprise that (1) ore grinding is conducted on copper-sulphur rough concentrate obtained through flotation; (2) after the ore grinding, a sulfur inhibitor selected from sodium sulfite, sodium metabisulfite, sodium bisulfate and sodium thiosulfate is added to the copper-sulphur rough concentrate, and a sulfur inhibition reaction is conducted; (3) a copper selective collector is added, and flotation is conducted; (4) a humate inhibitor is added to a flotation froth product; after an reaction with mixing is conducted, concentration is conducted; and (5) a humate inhibitor is added to a concentration froth product; after an reaction with mechanical mixing, concentration is conducted again, and copper concentrate separated from the sulphur is obtained. The copper and sulphur separation method for the copper-sulphur ore is simple in technology; lime and other highly alkaline inhibitors are not required to be added; required reagents are extensive in source and easy to prepare and add; the prepared reagents are good in flowability, easy to control, and not liable to block pipelines. The copper and sulphur separation method for the copper-sulphur ore is a novel copper and sulphur separation method.

Description

technical field [0001] The invention relates to a copper-sulfur ore copper-sulfur separation method, which relates to a copper-sulfur ore flotation coarse concentrate separation method for copper and sulfur. Background technique [0002] Copper-sulfur ore reserves are huge, and most porphyry copper deposits contain a certain amount of sulfur. Because the floatability of sulfur is similar to that of copper, many beneficiation processes adopt copper-sulfur mixed flotation, or copper-sulfur flotation flotation processes, and then separate copper and sulfur to obtain qualified copper concentrates. [0003] At present, lime is mainly used as sulfur inhibitor in the separation of copper and sulfur in production. However, the use of lime has major disadvantages. Lime needs to be prepared as milk of lime before it can be added, and there are unfavorable factors such as scaling, blockage of pipes, and large fluctuations in the amount of addition during the addition process, resultin...

AI Technical Summary

Problems solved by technology

However, the use of lime has major disadvantages. Lime needs to be prepared as milk of lime before it can be added, and there are unfavorable factors such as scaling, blockage of pipes, and large fluctuations in the amount of addition during the addition process, resulting in large differences in the separation effect of copper and sulfur; high alkalinity It is easy to lose associated elements such as molybdenum, gold and silver under certain conditions; tailings water is highly alkaline and cannot be discharged directly

There are also reports of copper-sulfur separation methods that use calcium hypochlorite, potassium permanganate and other oxidants instead of lime, but there are disadvantages such as on-site copper-sulfur separation production indicators fluctuate greatly, some pharmaceutical components are prone to failure, or are relatively irritating, and cannot be used on a large scale. Industrial application

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