Process for recovering cobalt, copper, zinc and manganese in manganese chloride residual liquid

A technology of manganese chloride raffinate and manganese chloride, which is applied in the field of hydrometallurgy and chemical industry, can solve the problems of long process flow, high cost, waste of resources and environment, and achieve short process flow, low production cost and high product purity Effect

Active Publication Date: 2011-11-16
JINCHUAN GROUP LIMITED
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, when dealing with ores containing cobalt, copper, zinc, and manganese at the same time, after the cobalt, copper, zinc, and manganese in the ore are often leached, the copper in the leaching solution is first separated by Lix984 and other extractants, and then the copper in the leachate is separated with P 2 0 4 The extractant is used to separate cobalt, and the solution containing zinc and manganese (entraining part of cobalt and copper) is precipitated with carbonate, etc., and then returned to the fire method system to recover the cobalt and copper. Among them, zinc is volatilized during fire method recovery, and manganese Discarded by slag making, the recovery rate of cobalt and copper in this method is extremely low, and zinc and manganese cannot be recovered, resulting in a great waste of resources and environmental pollution; Lix984 is often used to extract copper, P 204 The process of extracting zinc, HA-1 extracting cobalt and separating manganese, the process is long, high cost and low recovery rate of valuable metals

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] a The chloride ion concentration in the manganese chloride solution containing cobalt, copper and zinc produced in the process of processing the ore containing manganese, cobalt, copper and zinc is adjusted to 300g / L with a hydrochloric acid solution with a concentration of 24%;

[0016] b with 5% N 235 , the extractant of 5% isooctyl alcohol and 90% sulfonated kerosene is compared in O / A=1:0.5, and the cobalt, copper, and zinc ions in the manganese chloride raffinate are left in the raffinate;

[0017] C is that the sodium chloride solution that chlorine ion concentration is 60g / L compares O / A=1:0.5, strips the cobalt in the raffinate organic phase, obtains the cobalt chloride precipitate; / A=1:0.5, the copper in the back extraction raffinate is loaded in the organic phase, and the copper chloride precipitate is obtained; compared with O / A=1:0.5 with the stripping agent sodium carbonate, the back extraction raffinate is loaded with organic Zinc in the phase, a zinc pr...

Embodiment 2

[0024] When a hydrochloric acid solution with a concentration of 35% is used to leach ores containing manganese, cobalt, copper and zinc with hydrochloric acid, the chloride ion concentration in the obtained manganese chloride leach solution is adjusted to 350g / L;

[0025] b with 30% N 235 , 20% isooctyl alcohol and 50% sulfonated kerosene N 235 When the extractant is compared to O / A=1:5, the cobalt, copper, and zinc ions in the extracted manganese chloride raffinate remain in the raffinate;

[0026] c Use a hydrochloric acid solution with a chloride ion concentration of 80g / L at a ratio of O / A=1:5 to back-extract the cobalt in the organic phase of the raffinate to obtain a cobalt chloride precipitate; use pure water at a ratio of O / A =1:5, back extract the copper in the raffinate loaded organic phase, and obtain copper chloride precipitate; use the stripping agent oxalic acid to compare O / A=1:5, back extract the copper in the raffinate loaded organic phase Zinc, to obtain a...

Embodiment 3

[0033] a Use a 30% hydrochloric acid solution to adjust the concentration of chloride ions in the manganese chloride raffinate to 250g / L;

[0034] b with 20% N 235 , 15% isooctyl alcohol and 65% N of sulfonated kerosene 235 The extractant extracts cobalt, copper and zinc ions in the manganese chloride raffinate under the condition of O / A=1:3;

[0035] c Use a sodium chloride solution with a chloride ion concentration of 70g / L at a ratio of O / A=1:2 to back-extract cobalt in the organic phase; use pure water at a ratio of O / A=1:3 to back-extract Extract the copper in the loaded organic phase; use potassium hydroxide to back-extract the zinc in the loaded organic phase at a ratio of O / A=1:3.5; Cobalt chloride, copper chloride products;

[0036] d with 25% P 204 and 75% sulfonated kerosene, the saponification rate is 75% P 204 The extractant is compared to O / A=1:3, and the extraction is carried out by N 235 Manganese ions in the raffinate obtained after extraction; use 2mol / ...

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PUM

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Abstract

The invention relates to a process for recovering cobalt, copper, zinc and manganese in a manganese chloride residual liquid. By using the process, the recovery rates of cobalt, copper, zinc and manganese are above 90%, the contents of impurities in recovered cobalt, copper, zinc and manganese products are below 1g/L, and the contents of the impurities in the manganese product are below 2%. The process mainly comprises the following steps: regulating the concentration of chlorine ions in the manganese chloride residual liquid to 250-350g/L; extracting cobalt, copper and zinc in the manganese chloride residual liquid with N235, and reserving manganese in raffinate; then stripping cobalt, copper and zinc in an organic phase with a stripping agent so as to obtain pure cobalt chloride, a copper chloride solution and a zinc precipitate, washing, drying and calculating the zinc precipitate so as to obtain a zinc oxide product; extracting manganese in the raffinate with P204, stripping with an acid so as to obtain a manganese salt solution; and carrying out evaporation, crystallization and drying on the manganese salt solution so as to obtain the manganese salt product. The process has the advantages of short process flow, high valuable metal recovery, high recovered product purity and low recover cost.

Description

technical field [0001] The invention belongs to the field of hydrometallurgy and chemical industry, in particular to a method for recovering cobalt, copper, zinc and manganese in manganese chloride raffinate. Background technique [0002] At present, when dealing with ores containing cobalt, copper, zinc, and manganese at the same time, after the cobalt, copper, zinc, and manganese in the ore are often leached, the copper in the leaching solution is first separated by Lix984 and other extractants, and then the copper in the leachate is separated with P 2 0 4 The extractant is used to separate cobalt, and the solution containing zinc and manganese (entraining part of cobalt and copper) is precipitated with carbonate, etc., and then returned to the fire method system to recover the cobalt and copper. Among them, zinc is volatilized during fire method recovery, and manganese Discarded by slag making, the recovery rate of cobalt and copper in this method is extremely low, and z...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22B7/00C22B3/40C22B15/00C22B23/00C22B47/00C22B19/30
CPCY02P10/20
Inventor 陈国栋
Owner JINCHUAN GROUP LIMITED
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