Separation method of copper-lead-zinc-sulfur mixed concentrate

Abstract

The invention discloses a separation method of copper-lead-zinc-sulfur mixed concentrate. The separation method comprises the steps of mixed concentrate cleaning pretreatment, gravity separation of lead-sulfur and copper-zinc minerals, high-alkali regrinding separation of lead-sulfur minerals, acidic regrinding cleaning of the copper-zinc minerals and efficient separation of copper and zinc and the like. According to the method, the copper-lead-zinc-sulfur mixed concentrate is subjected to cleaning pretreatment by adopting an acetone ultrasonic technology, then separation of lead and sulfur from the copper-zinc minerals is conducted by adopting a shaking table suitable for micro-size fraction separation, the lead-sulfur minerals are separated from the copper-zinc minerals by utilizing specific gravity difference, and the problems of high concentrate mutual content, unqualified quality and the like caused by difficult inhibition of lead and sulfur after fine grinding of the mixed concentrate are avoided; lead-sulfur separation of the lead-sulfur concentrate is realized by adopting a high-alkali regrinding enhanced separation technology; and after the copper-zinc minerals are subjected to acid pickling pretreatment, part of carbonate easily-floating gangue is removed through dissolution, the quality of the copper-zinc mixed concentrate is improved, copper-zinc separation is conducted on the basis, single qualified concentrate is obtained, and the separation efficiency of the copper-lead-zinc-sulfur mixed concentrate is improved.

Description

technical field [0001] The invention relates to the technical field of separation of nonferrous metal sulfide minerals, in particular to a method for separation of copper-lead-zinc-sulfur mixed concentrate. Background technique [0002] Many copper-lead-zinc-sulfur polymetallic ores have complicated symbiotic relationships. Affected by ore properties and production equipment limitations, some concentrators produce copper-lead-zinc-sulfur mixed concentrates. With the improvement of smelting industry technology, copper-lead-zinc mixed concentrates can be directly Entering into smelting, but the main grade of copper, lead and zinc is not enough due to the high sulfur content, the smelting cost is high, and the valuation coefficient of copper, lead and zinc concentrate is low. The raw materials processed by the traditional copper-lead-zinc-sulfur separation process are mostly raw ores, and copper-lead-zinc mixed flotation-copper and lead-zinc separation process is mostly used, b...

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a method for sorting copper-lead-zinc-sulfur mixed concentrates to solve the problem that a single concentrate cannot be obtained when the existing technical solutions process copper-lead-zinc-sulfur mixed concentrates, and the copper-lead-zinc separation efficiency is low, Poor indicators, high interconcentration of concentrates and other problems