Collecting agent for flotation of complex and difficult-to-treat copper-silver sulfide ore

Abstract

The invention discloses a collecting agent for flotation of complex and difficult-to-treat copper sulfide silver ore, which is prepared by mixing the following components in percentage by mass: 55 to 75 percent of sulfur nitrogen nitrile ester, 20 to 40 percent of ethionine ester and 5 to 15 percent of polyethylene glycol alkyl ether. The collecting agent disclosed by the invention not only has very strong collecting performance, but also has foamability, so that the cost of a foaming agent can be saved in production; due to the fact that the collecting agent MT-23 is high in capacity, the total consumption of the agent per ton of ore is extremely low; the flotation cost is saved by more than 25% compared with that of an existing agent; the collecting agent is non-toxic, odorless and easy to degrade, belongs to a green and environment-friendly mineral separation collecting agent, and has a wide popularization prospect. By the adoption of the method, the recovery rate of copper and silver can be remarkably increased on the premise that the quality of copper-silver concentrate products is guaranteed, and the method has the advantages of being simple in technological process, stable, reliable, high in applicability, simple in reagent system, small in reagent dosage, convenient to add and the like.

Description

technical field [0001] The invention belongs to the field of nonferrous metal beneficiation flotation reagents, in particular to a flotation collector for copper-silver symbiotic ores, especially suitable for copper-containing grades ≥ 0.6%, silver content ≥ 30.0g / t and copper minerals with malachite , chalcopyrite, chalcocite-based flotation enrichment of copper-silver ores. Background technique [0002] At present, copper, as an important material metal in modern human society, plays an important role in national economic and social development. At present, the rich copper mines are decreasing day by day, and the proportion of low-grade copper mines is increasing day by day. Among them, the copper ore with a grade of more than 1% accounts for only 35% of the total reserves, and the national average copper ore grade is only 0.87%. Among the undiscovered copper resources, copper grades below 0.7% account for 56% of the total reserves. [0003] Silver is one of the earliest...

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Problems solved by technology

[0008] The object of the present invention is to provide a kind of flotation method for complex and refractory copper-silver ore flotation for the problems of low copper and silver grades, low recovery rate, complicated process and environmental pollution in the copper concentrate existing in the prior art. Collector

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