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Laterite nickel ore processing method

A technology of laterite nickel ore and a treatment method, applied in the metallurgical field, can solve the problems of high cost, long process flow, large energy consumption and the like, and achieve the effects of improving nickel extraction efficiency, short process flow and low energy consumption

Active Publication Date: 2017-11-07
CHINA ENFI ENGINEERING CORPORATION
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  • Abstract
  • Description
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  • Application Information

AI Technical Summary

Problems solved by technology

This method often has the defects of long process flow, high cost and large energy consumption
Although there is also an improved process on the basis of the above-mentioned solvent leaching method in the related art to overcome the above-mentioned defects, the effect is not ideal

Method used

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Embodiment Construction

[0019] First refer to the following figure 1 The laterite nickel ore treatment method of the embodiment of the present invention is described.

[0020] The laterite nickel ore processing method according to the embodiment of the present invention comprises:

[0021] S100: reduction reaction and carbonylation reaction

[0022] According to a specific embodiment of the present invention, firstly, the laterite nickel ore is contacted with carbon monoxide in a fluidized bed to perform reduction reaction and carbonylation reaction, so as to obtain the first mixed gas and the residue containing ferric oxide. Wherein, the first mixed gas is a mixed gas of carbon monoxide, carbon dioxide and nickel carbonyl.

[0023] According to a specific embodiment of the present invention, in the fluidized bed, the iron in the laterite nickel ore is firstly reduced by carbon monoxide to finally generate ferric oxide, and the nickel oxide is reduced to generate nickel element, and further, the ni...

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Abstract

The invention discloses a laterite nickel ore processing method. The laterite nickel ore processing method comprises the steps that laterite nickel ores makes contact with carbon monoxide and conduct an reduction reaction and a carbonylation reaction in a multi-stage fluidization reactor, so that first mixed gas and residues containing ferrosoferric oxide are obtained; the first mixed gas is cooled so as to be separated, and thus liquid nickel carbonyl and second mixed gas are obtained; the liquid nickel carbonyl is decomposed, so that carbon monoxide and nickel are obtained; and the first mixed gas includes the carbon monoxide, carbon dioxide and the nickel carbonyl, and the second mixed gas includes the carbon monoxide and the carbon dioxide. According to the laterite nickel ore processing method, the technological process is short, energy consumption is low, and the nickel extraction efficiency can be improved significantly.

Description

technical field [0001] The invention belongs to the field of metallurgy, in particular, the invention relates to a laterite nickel ore processing method. Background technique [0002] The traditional method of processing laterite nickel ore to extract nickel mostly uses solvent leaching methods such as sulfuric acid for extraction. This method often has the defects of long technical process, high cost and large energy consumption. Although there are also improved processes based on the above-mentioned solvent leaching method in the related art to overcome the above-mentioned defects, the effect is not ideal. Therefore there is still a need for further improvement regarding the treatment of lateritic nickel ore. Contents of the invention [0003] The present invention aims to solve one of the above-mentioned technical problems at least to a certain extent. For this reason, an object of the present invention is to propose a kind of laterite nickel ore processing method, u...

Claims

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Application Information

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IPC IPC(8): C22B5/14C22B5/20C22B23/02
CPCC22B5/14C22B5/20C22B23/02Y02P10/20
Inventor 马明生孙海阔裴忠冶黎敏李曰荣卢笠渔徐小锋
Owner CHINA ENFI ENGINEERING CORPORATION
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