Ore dressing method for copper sulphide nickel ores with high pyrrhotite content
A technology of copper-nickel sulfide and beneficiation method, which is applied in chemical instruments and methods, flotation, wet separation, etc., can solve the problems of low recovery rate of copper and nickel metal, high impurity content of concentrate, and high consumption of chemicals, and achieve the High consumption, good effect, reducing the effect of tailings metal loss
Active Publication Date: 2013-06-26
JILIN JIEN NICKEL IND
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Problems solved by technology
Due to the nature of the ore, in the production process of nickel ore with high content of pyrrhotite, there are usually serious problems such as low recovery rate of copper and nickel metal, high content of impurities in concentrate, high consumption of chemicals, and inter-containment of copper and nickel.
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[0019] The present invention will be further described below using the accompanying drawings and specific embodiments.
[0020] refer to figure 1 , a high pyrrhotite content copper-nickel sulfide ore beneficiation method comprises the following steps in turn:
[0021] Concentrated closed-circuit grinding process of copper-nickel sulfide ore 1. The ore is fed through a belt into a closed-circuit grinding process composed of an overflow ball mill and a spiral classifier. The concentration and fineness of the first-stage grinding are 75%-80% and 25% respectively. -35%, the overflow concentration and fineness of the classifier are 38±2%, 50%-55%, respectively, the overflow of the classifier is fed to the hydrocyclone at the second stage classification, and the overflow concentration and fineness are 38±2% respectively 2%, 75%-80%, the qualified particle size enters the mixed flotation operation, and the unqualified particle size enters the second stage grinding. The concentration...
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The invention relates to an ore dressing method for copper sulfide nickel ores with high pyrrhotite content, belonging to the field of ore dressing methods for recovering copper and nickel metals from copper sulfide nickel ores. The ore dressing method comprises the following steps of: (1) carrying out closed circuit grinding in copper sulfide nickel ore aggregate; (2) carrying out bulk flotationon ground copper sulfide nickel ores; (3) carrying out open circuit choiceness on copper and nickel bulk concentrates obtained after bulk flotation; (4) separating copper and nickel from bulk concentrates obtained after open circuit choiceness; and (5) reselecting tailings produced by copper and nickel bulk flotation. In the invention, a specified proportion of ore dressing agent is added in a stage agent addition way in the flotation process, and nickel concentrates with 7.6% grade and 85.1% recovery rate and copper concentrates with 26.5% grade and 54% recovery rate can be obtained under the condition of 1.14% nickel grade and 0.3% copper grade of the original ores. The method has reliable and advanced process, high concentrate grade, good copper and nickel separation effect and high comprehensive recovery rate of valuable metals and is an ideal ore dressing method for copper sulfide nickel ores.
Description
technical field [0001] The invention belongs to the field of a beneficiation method for recovering copper and nickel from copper-nickel sulfide ore, in particular to a beneficiation method for nickel pyrrhotite ore with relatively high copper sulfide and nickel contents. Background technique [0002] At present, the nickel in the known copper-nickel sulfide ores mainly exists in the form of free nickel sulfide, such as pentlandite, pentlandite, and viridian nickelite, and a considerable part of nickel exists in the magnetic Among the pyrite. Since the main nickel-containing minerals are brittle, easily muddy and oxidizable iron-rich sulfide minerals, they are prone to mineral muddying in the crushing and grinding process with talc, chlorite, serpentine and other muddy gangue minerals. Phenomenon. In the traditional beneficiation process, copper-nickel sulfide ore usually adopts a multi-stage grinding process, using xanthate and butylamine black powder as sulfide mineral co...
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IPC IPC(8): B03B7/00B03B1/00B03D1/00B03D1/08
Inventor 李景峰刘玉江冯立伟刘绪光孙英崔商哲
Owner JILIN JIEN NICKEL IND