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Nickel Ore Processing Location: Home >>Products >>Flotation Process

Nickel Ore Processing

Nickel ore mainly consists of copper-nickel sulfide ore and nickel oxide ore, beneficiation and processing of both methods is completely different.

Copper-nickel sulfide ore beneficiation methods, the most important is the flotation, magnetic and re-election is usually secondary dressing method. Flotation copper sulfide nickel ore, often used in the flotation of copper sulphide minerals collector and frother. A basic principle for determining the flotation process, would prefer to make the copper into the nickel concentrate, as much as possible to avoid nickel into copper concentrate. Because nickel in copper concentrate, copper nickel concentrate can get a more complete recovery losses in the smelting process. Copper-nickel ore flotation has the following four basic processes.

Direct flotation or flotation process: This process can be used when the the ore copper than nickel content is much higher, election copper into separate concentrates. The advantage of this process is the low nickel containing the copper concentrate can be directly obtained.
(1)Mixed flotation process: for sorting copper below the nickel ore,the mixed concentrate directly resulting copper-nickel smelting of high nickel matte.
(2)Mixed - preferred flotation processes: bulk flotation of copper-nickel ore, copper concentrate containing low nickel and copper nickel concentrate is elected separately from the mixed concentrate. The nickel concentrate by smelting after high nickel matte, nickel matte flotation separation.
(3) Mixed - flotation and bulk flotation tailings recycling part of the nickel : When various nickel ore minerals flotability bulk flotation of copper-nickel from its tailingsfurther recovery flotability nickel-containing minerals.

Copper the nickel smelting harmful impurities in copper grade of copper-nickel ores and industrial recovery value, copper-nickel separation technology is an important topic in the copper-nickel ore processing. Copper-nickel separation technology is divided into two kinds of mixed concentrate separation of copper-nickel and high-nickel matte separation process. Typically, the former for the copper-nickel mineral grain to coarse disseminated to each other less closely related ore, which is used to fine granularity of copper-nickel minerals each other embedded cloth is very dense ore.

Pyrometallurgical copper-nickel sulfide ores. Jinchuan Nickel Mine is no exception, and the basic flow of the preparation (roasting) - melting - blowing - Refining (electrolysis) link. Mine belonging to the serpentine type ore, copper and nickel minerals are dense disseminated, direct mechanical beneficiation copper-nickel separation difficult, and therefore high nickel matte flotation separation techniques. Copper-nickel mixed concentrate converter smelting of nickel matte, then crushing and grinding floating craft, and finally into the final products - electroless nickel electrolysis.

The nickel oxide ore crushing, screening processes to pre-removal of the degree of weathering weak, with low nickel chunk of bedrock. Isomorphous nickel in nickel oxide ore often scattered in gangue minerals, and very fine-grained, and therefore can not be enriched mechanical beneficiation methods, only direct smelting.

Nickel oxide ore smelting enrichment methods, can be divided into the fire and wet two categories. The former can be divided into a false sulfur melting, ferronickel and ferrite law; latter have restored roasting - the atmospheric ammonia leaching method, high-pressure acid leaching method.

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