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Three-outlet extraction method and system device for obtaining nickel salt solution and nickel-cobalt solution through separation

A system device and three-exit technology, which is applied in the field of three-exit extraction method and system device, can solve the problems of long technical process and high investment cost, and achieve the effect of high extraction rate, high purity and long solution process

Pending Publication Date: 2022-07-01
BOTREE CYCLING SCI & TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] However, the current treatment process of nickel-cobalt-magnesium waste liquid has a long technical process and high investment costs

Method used

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  • Three-outlet extraction method and system device for obtaining nickel salt solution and nickel-cobalt solution through separation
  • Three-outlet extraction method and system device for obtaining nickel salt solution and nickel-cobalt solution through separation
  • Three-outlet extraction method and system device for obtaining nickel salt solution and nickel-cobalt solution through separation

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Experimental program
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Embodiment 1

[0083] This embodiment provides a three-outlet extraction system device for separating and obtaining nickel salt solution and nickel-cobalt solution. Based on the three-outlet extraction system device provided by the specific embodiment, the saponification tank 1 includes a first-level saponification section, and the pre-extraction section includes a stage extraction section, the middle extraction section includes a first-stage extraction section, the post-extraction section includes a first-stage extraction section, the first washing tank includes two-stage washing sections connected in sequence, the second washing tank includes two-stage washing sections connected in sequence, and the first The extraction tank includes two-stage stripping sections connected in sequence, and the second stripping tank includes two-stage stripping sections connected in sequence.

[0084] This embodiment also provides a method for extracting and separating nickel-cobalt-magnesium waste liquid usi...

Embodiment 2

[0094] This embodiment provides a three-outlet extraction system device for separating and obtaining a nickel salt solution and a nickel-cobalt solution. Based on the three-outlet extraction system device provided by the specific embodiment, the saponification tank 1 includes two successively connected saponification sections. The front section includes a 1-level extraction section, and the middle extraction section includes a 4-level extraction section (the first stage of the extraction middle section is provided with a feed liquid inlet, and the second stage of the extraction middle section is provided with a nickel-cobalt organic phase outlet), and the back section of the extraction includes a first-level extraction section, The first washing tank includes 4-stage washing sections communicated in sequence, the second washing tank includes 4-stage washing sections communicated in sequence, the first stripping tank includes 3-stage stripping sections communicated in sequence, a...

Embodiment 3

[0105] This embodiment provides a three-outlet extraction system device for separating and obtaining nickel salt solution and nickel-cobalt solution. Based on the three-outlet extraction system device provided by the specific embodiment, the saponification tank 1 includes 3-stage saponification sections connected in sequence, and the extraction The front section includes a 2-stage extraction section, and the middle extraction section includes an 8-stage extraction section (the first stage of the extraction middle section is provided with a feed liquid inlet, and the third stage of the extraction middle section is provided with a nickel-cobalt organic phase outlet), and the back section of the extraction includes a 2-stage extraction section, The first washing tank includes 6-stage washing sections communicated in sequence, the second washing tank includes 6-stage washing sections communicated in sequence, the first stripping tank includes 4-stage stripping sections communicated ...

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Abstract

The invention provides a three-outlet extraction method and system device for obtaining a nickel salt solution and a nickel-cobalt solution through separation, and the method comprises the following steps: carrying out three-outlet multi-stage fractional extraction on a nickel-cobalt-magnesium waste liquid by adopting an organic acid extraction solution, and respectively obtaining a nickel salt organic phase and a nickel-cobalt organic phase after extraction, and a nickel salt solution and a nickel-cobalt solution are obtained through washing and reverse extraction in sequence. According to the three-outlet extraction method provided by the invention, the organic acid extraction solution is used as the extraction agent to realize direct extraction and separation of nickel and cobalt, and the adopted organic acid extraction solution has high extraction rate on nickel and cobalt, so that the problems of long technological process and high investment in the prior art are effectively solved.

Description

technical field [0001] The invention belongs to the technical field of extraction and separation, and relates to a three-outlet extraction method and a system device for separating and obtaining a nickel salt solution and a nickel-cobalt solution. Background technique [0002] When using cobalt concentrate and cobalt intermediate products as raw materials to produce cobalt salts (cobalt sulfate, cobalt chloride), cobalt, nickel, magnesium and other impurities are extracted and separated by P507, and the raffinate wastewater mainly contains nickel (500-2000mg / L) And a small amount of cobalt (1 ~ 50mg / L) and other valuable metals; sodium content of 50000-60000mg / L and magnesium content of 2000-8000mg / L is high-salt wastewater; also contains a small amount of oil. The traditional process adopts step-by-step precipitation, and the heavy metal ions in the treated wastewater still exceed the standard, which can no longer meet the increasingly severe environmental protection situat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22B3/32C22B23/00C22B3/02
CPCC22B3/02C22B23/0453
Inventor 王雪
Owner BOTREE CYCLING SCI & TECH CO LTD
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