Copper-sulfur separation floatation method

Abstract

The invention discloses a copper-sulfur separating flotation method, wherein a regulator is used according to the difference of the charge, the point of zero charge (PZC) and the pH value of the point of zero charge (PHPZC) on the surface of chalcopyrite and pyrite in collective alloy concentrate; the pH value of ore slurry of the collective alloy concentrate is adjusted and controlled to be between 12.5 and 13; a combined inhibitor is adopted to inhibit the flotability of the pyrite; a collector is adopted to change the flotability of the chalcopyrite; No. 2 flotation oil is adopted as a foaming agent; and the ore slurry of the collective alloy concentrate is subjected to the flotation flow of primary roughing, secondary scavenging and tertiary refining. After the collective alloy concentrate (the chalcopyrite and the pyrite) are floated by the method, foam products are concentrate containing gold copper, and underflow is concentrate containing gold sulfur; the total amount of gold metals and copper metals is balanced before and after separation, and only the existence form is different; the value of gold is unchanged; and the grade of copper is improved from 3.85 percent to 21.50 percent, and the sale price of the copper is improved from 4,000 RMB per metal ton to 13,000 RMB per metal ton, so that significant economic benefit is generated.

Description

technical field [0001] The invention relates to a copper-sulfur separation flotation method, which belongs to the field of mineral processing engineering. Background technique [0002] At present, the gold separation process of mixed gold concentrates (including chalcopyrite and pyrite) generally adopts the mixed flotation method of "gravity separation + flotation + cyanide". With the continuous development of mineral resources, the grade of selected raw ore It is getting lower and lower, and the properties of the ore are becoming more and more complex, especially for some medium-sulfur and low-copper ores stored in the mining area. The copper content in the mixed flotation gold concentrate is more than 3%, which leads to an increase in the consumption of sodium cyanide and the cost of cyanide smelting. High, the gold leaching rate is low; and the copper resources in the ore have not been rationally utilized, resulting in a waste of resources. Contents of the invention ...

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Problems solved by technology

[0002] At present, the gold separation process of mixed gold concentrates (including chalcopyrite and pyrite) generally adopts the mixed flotation method of "gravity separation + flotation + cyanide". With the continuous development of mineral resources, the grade of selected raw ore It is getting lower and lower, and the properties of the ore are becoming more and more complex, especially for some medium-sulfur and low-copper ores stored in the mining area. The copper content in the mixed flotation gold concentrate is more than 3%, which leads to an increase in the consumption of sodium cyanide and the cost of cyanide smelting. High, the gold leaching rate is low; and the copper resources in the ore have not been rationally utilized, resulting in a waste of resources

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