Method for extracting nickel and/or cobalt

A nickel-cobalt leaching technology, applied in the field of extracting nickel and/or cobalt, cobalt, extracting nickel, or nickel and cobalt, can solve the problems of long leaching cycle, using more equipment, and slow infiltration speed, so as to avoid heap The effect of extremely slow leaching speed, short leaching cycle, and fast leaching speed

Inactive Publication Date: 2008-09-24
JIANGXI RARE EARTH & RARE METALS TUNGSTEN GRP
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Problems solved by technology

[0003] However, in the existing heap leaching process, both serpentine-type ore and limonite-type ore are mixed together for heap leaching, and as a result, the infiltration rate is slow and the leaching cycle is long
[0004] In addition, in the existing atmospheric heating and stirring leaching process, the serpentine-type ore t

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  • Method for extracting nickel and/or cobalt
  • Method for extracting nickel and/or cobalt

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Embodiment Construction

[0031] best practice

[0032] The inventors found that in the heap leaching process, the serpentine-type ore has a shorter leaching period; while the limonite-type ore has a longer leaching period.

[0033] Such as figure 1 As shown, the normal-pressure stirring and leaching process flow for producing nickel-cobalt products from limonite-type ore comprises the following steps: ore preparation step 11, normal-pressure stirring and leaching step 12, and solid / liquid separation step 13, wherein the step The implementation of 12 includes the application step 111 of mineral acid, and the result of the solid / liquid separation step 13 is to produce a leaching solution 14 and a leaching residue 15 for producing nickel-cobalt products.

[0034] In an embodiment of the atmospheric pressure stirring and leaching process for producing nickel-cobalt products from limonite-type ore, the following steps are specifically included:

[0035] A. Crushing the ore with a particle size greater th...

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Abstract

An extraction method of Nickel and/or Cobalt comprises a heap leaching technology and a technology of atmospheric heating, mixing and leaching, which is characterized in that limonite type ore is leached by using the atmospheric heating and mixing, and serpentine type ore is leached by heap leaching technology. According to the invention, different leaching technology are adopted for the serpentine type ore and the limonite type ore in laterite-nickel ore, the serpentine type ore is leached by using the heap leaching technology to obtain the faster leaching speed, and the limonite type ore is leached by using the atmospheric heating and mixing technology for avoiding the problem of the extreme low leaching speed and the long leaching period.

Description

technical field [0001] The present invention relates to a method for extracting nickel and / or cobalt, in particular to a method for extracting nickel and / or cobalt from laterite nickel ore, especially by separating limonite type and serpentine type laterite nickel ore Methods of collecting and processing to extract nickel, cobalt, or nickel and cobalt. It belongs to the field of hydrometallurgy. Background technique [0002] According to the prior art, the method for extracting nickel, cobalt, or nickel and cobalt from laterite nickel ore includes a heap leaching process of laterite nickel ore and an atmospheric heating and stirring leaching process. [0003] However, in the existing heap leaching process, both the serpentine-type ore and the limonite-type ore are mixed together for heap leaching. As a result, the infiltration rate is slow and the leaching cycle is long. [0004] In addition, in the existing atmospheric heating and stirring leaching process, the serpentine...

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Application Information

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IPC IPC(8): C22B23/00C22B3/04C22B3/06
CPCC22B23/0407C22B23/005C22B23/0415C22B23/043
Inventor 卢能迪欧阳红肖方春崔源发
Owner JIANGXI RARE EARTH & RARE METALS TUNGSTEN GRP
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