New treating method for nickel oxide ore

A technology of nickel oxide ore and a new method, applied in the direction of process efficiency improvement, solid separation, flotation, etc., can solve the problems of undesired heap leaching, low leaching rate, waste of resources, etc., to save and protect the environment, nickel The effect of less loss and lower production cost
CN1858274AInactive Publication Date: 2006-11-08YUNNAN TIN GROUP HLDG
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
YUNNAN TIN GROUP HLDG
Publication Date
2006-11-08
Estimated Expiration
Not applicable · inactive patent

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Abstract

The new nickel oxide ore treating process has synthesized chemical metallurgy and ore dressing technology. The technological process includes crushing ore, grinding ore into ore pulp, magnetically separating out strong magnetic mineral, heating ore pulp and leaching out with concentrated sulfuric acid, adding sulfurizing agent for chemical reaction to produce nickel sulfide precipitate, and floating out nickel sulfide concentrate. The technological process is simple, low in production cost, high in nickel oxide leaching rate, effective utilization of resource and environment friendship.
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Description

technical field

[0001] The invention relates to a process technology for treating nickel oxide ore, which is a new process method for treating nickel oxide ore which combines chemical metallurgy and ore dressing technology. technical background

[0002] At present, there are three methods of processing technology for nickel oxide ore in the world, namely pyrotechnics, wet process and fire-wet combined process.

[0003] The first pyrotechnic process: the ore is crushed, roasted for reduction smelting, and the crude nickel-iron alloy and high-nickel-sulfur products are produced, and then the semi-finished product is sent to the refining process for supporting treatment.

[0004] The second wet process: one of them is the ammonia leaching process, the nickel oxide ore is crushed, reduced and roasted, and then 4-stage countercurrent ammonia leaching, so that valuable metals such as nickel enter the leaching solution. The leaching solution sulfides and precipitates basic nickel ...

Claims

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