Flotation method for copper-containing nickel sulfide ore

Abstract

The invention discloses a flotation method for a copper-containing nickel sulfide ore. In order to solve the problem that nickel-containing sulfide is easily oxidized in the flotation process, the invention provides a flotation method which can ensure that the nickel-containing sulfide is not oxidized and can make a part of oxidized nickel ore activated, namely sulfite serving as an antioxidant of nickel sulfide is added during grinding operation of the copper-containing nickel sulfide ore, and sulfate serving as an activating agent with the same weight as the sulfite is added before flotation operation, so that the using amount of the antioxidant is sufficient, the requirement of preventing or delaying the nickel sulfide from being oxidized is met, and the nickel-containing sulfide such as pentlandite and the like is activated. Compared with the conventional flotation method in which the antioxidant is not added, the anti-oxidation method has the advantages that: the grade of a copper-nickel mixed concentrate can be improved by about 1 percent, the recovery rate of copper can be improved by 0 to 2 percent, and the recovery rate of nickel can be improved by 4 to 6 percent.

Description

technical field

[0001] The invention relates to a flotation method of copper-containing nickel sulfide ore, which belongs to the field of ore dressing. Background technique

[0002] The main characteristic of my country's nickel ore resources is that the distribution of reserves is highly concentrated. The reserves of the Jinchuan nickel mine in Gansu alone account for 63.9% of the country's total reserves. 12.2% of the total reserves. my country's nickel ore is mainly copper-nickel sulfide ore, accounting for 86% of the country's total reserves, followed by laterite nickel ore, accounting for 9.6% of the country's total reserves. About 50 kinds of nickel-containing minerals are known, the most important nickel-containing sulfides are pentlandite, purple sulfur nickel ore, red arsenic nickel ore, etc., and a considerable part of nickel occurs in pyrrhotite in the same quality and isomorphism Among them, nickel sulfide deposits generally contain copper, and are often called ...

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