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Method for separating and preparing high loose ratio and high purity cobalt oxalate from asbolite

A technology of cobalt earth ore and cobalt oxalate, which is applied in the chemical industry, can solve the problems of inability to remove impurities in depth, poor product quality, and low cobalt recovery rate, and achieve low production costs, simple process flow, and excellent product quality.

Inactive Publication Date: 2010-08-04
江苏雄风科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0012] With the development of extraction technology, the (1) and (2) processes are outdated and are rarely used. The main disadvantages are: long process flow, high production cost, and poor product quality
The (3) process uses advanced extraction technology, which is widely used now; however, there are common problems of large equipment investment, low cobalt recovery rate, and inability to remove impurities in depth

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0063] The method for separating and preparing high-song ratio high-purity cobalt oxalate from cobalt ore may further comprise the steps:

[0064] 1. Leaching and iron removal steps:

[0065] Put 1000g of 100-mesh cobalt ore (the content of cobalt is 8-12% by mass) into a 1.6mol / l sulfuric acid medium at a ratio of 1:2 by weight, add 140 parts by weight of sodium sulfite at 60°C, and perform reduction leaching 5.5 hours;

[0066] Then add 8g of sodium chlorate, add heavy calcium powder and control the pH value to 2.5, react at 70°C for 5.5 hours, and then filter through the diaphragm to separate the solid and liquid to obtain the leaching solution;

[0067] 2. Extraction steps:

[0068] A, copper extraction: in the leaching solution that obtains in step 1, add copper extraction agent by the ratio of 2: 1, described copper extraction agent is Lix984N and 260# kerosene mixed solution, the volume of described Lix984N in mixed solution The concentration is 4%; the extraction ti...

Embodiment 2

[0076] The method for separating and preparing high-song ratio high-purity cobalt oxalate from cobalt ore may further comprise the steps:

[0077] 1. Leaching and iron removal steps:

[0078] Put 1000g of 100-mesh cobalt ore (cobalt content greater than 10%) into a 1.6mol / l sulfuric acid medium at a weight ratio of 1:2.5, add 160g of sodium sulfite at 70°C, and perform reduction leaching for 6 hours;

[0079]Then add 10g of sodium chlorate, add heavy calcium powder and control the pH value to 3, react at 80°C for 6 hours, and then filter through the diaphragm to separate the solid and liquid to obtain the leaching solution;

[0080] 2. Extraction steps:

[0081] A, copper extraction: in the leaching solution that obtains in step 1, add copper extraction agent by the ratio of 2: 1, described copper extraction agent is Lix984N and 260# kerosene mixed solution, the volume of described Lix984N in mixed solution The concentration is 5%; the extraction time is 3 minutes, the oil a...

Embodiment 3

[0089] The method for separating and preparing high-song ratio high-purity cobalt oxalate from cobalt ore may further comprise the steps:

[0090] 1. Leaching and iron removal steps:

[0091] Put 1000g of 100-mesh cobalt ore into a 1.6mol / l sulfuric acid medium at a weight ratio of 1:3, add 190g of sodium sulfite at 80°C, and perform reduction leaching for 6.5 hours;

[0092] Then add 12g of sodium chlorate, add heavy calcium powder and control the pH value to 3.5, react at 90°C for 6.5 hours, and then press filter through the diaphragm to separate the solid and liquid to obtain the leaching solution;

[0093] 2. Extraction steps:

[0094] A, copper extraction: in the leaching solution that obtains in step 1, add copper extraction agent by the ratio of 2: 1, described copper extraction agent is Lix984N and 260# kerosene mixed solution, the volume of described Lix984N in mixed solution The concentration is 6%; the extraction time is 4 minutes, the oil and water are separated,...

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Abstract

The invention relates to a method for separating and preparing high loose ratio and high purity cobalt oxalate from asbolite. The method is characterized by comprising the following steps of: 1. carrying out reduction leaching and deironization by utilizing sodium sulfite; 2. extracting: carrying out copper extraction by utilizing a Li*984N and No.260 kerosene mixing solution, extracting and removing impurities by utilizing P204, and extracting and separating nickel and cobalt by utilizing P507; and 3. carrying out acidification by utilizing an oxalate solution on a solution after back extraction by utilizing the P507 in the step 2, then reacting the acidified solution with an ammonium oxalate solution and synthesizing to prepare the high loose ratio and high purity cobalt oxalate. The invention has the advantages of simple process flow, advanced technology, high metal recovery rate, low production cost, less environment pollution and excellent prepared product quality.

Description

technical field [0001] The invention relates to a method for separating and preparing high-purity cobalt oxalate from cobalt ore, belonging to the field of chemical industry. Background technique [0002] Cobalt is an important strategic metal. It is an important raw material for the manufacture of superalloys, batteries, hard alloys, magnetic alloys, precision alloys and cobalt-containing compounds. Widely used in super alloy, hard alloy, magnetic material, metallurgy, battery, glaze, artificial diamond, chemical industry and other industries. [0003] The source of cobalt is mainly smelted and extracted from ore. my country's cobalt resources are very short, mainly distributed in Gansu (accounting for 30% of the country's total reserves), and others are scattered in 11 provinces in China, showing a small scale of cobalt deposits, low grade, mainly associated, mainly using pyrometallurgical processes , recovery of cobalt from nickel extraction, high smelting cost and low ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22B3/40C22B3/08C07C55/07
CPCY02P10/20
Inventor 张勤李卫华陈燕峰
Owner 江苏雄风科技有限公司
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