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Method for leaching bidery metal by sulfuric acid and inflation agitation leaching trough

A white metal and leaching technology, applied in chemical instruments and methods, process efficiency improvement, solid separation, etc., can solve the problems of long regeneration time, high price of sodium chlorate, long leaching time, etc.

Active Publication Date: 2011-04-06
CHINA ENFI ENGINEERING CORPORATION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantage is that the regeneration of divalent iron ions or monovalent copper ions requires chlorine gas, and it takes a long time to regenerate with air or oxygen
[0031]4) Leach white metal with sulfuric acid and sodium chlorate, which is a fast and easy-to-implement method, but its biggest disadvantage is the price of sodium chlorate Higher, the cost of sodium chlorate per ton of cobalt metal is 10,000 yuan;
[0032]5) Oxidative leaching with sulfuric acid-hydrochloric acid mixed acid, there are problems such as long leaching time, large amount of oxygen consumption, CL- in the leachate, etc.

Method used

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  • Method for leaching bidery metal by sulfuric acid and inflation agitation leaching trough
  • Method for leaching bidery metal by sulfuric acid and inflation agitation leaching trough
  • Method for leaching bidery metal by sulfuric acid and inflation agitation leaching trough

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0146] Number of leaching stages: 1 stage;

[0147] Weigh white alloy 100g, according to liquid-solid ratio (L / S)=5:1 (ratio of sulfuric acid solution volume and alloy weight, above-mentioned liquid / solid=5:1 is 100 grams alloy powder is mixed with 500mL sulfuric acid solution, wherein sulfuric acid solution Concentration: 3.4mol / L, prepare leaching solution (the same below), H 2 SO 4 One input; the leaching time at 90°C is 4h (hours); the volume of the leaching solution (including washing water) is 940mL, containing Co24.03g / L; the leaching residue is 74.04g, containing Co23.86%; the cobalt leaching rate is 58.05%; (The slag count is the same below); Cu does not leach.

Embodiment 2

[0149] Except that the leaching conditions are: "liquid-solid ratio 8:1, temperature 100°C, stirring speed 600 rpm, leaching time 4h;" and test results: "leach solution 895mL, containing 30.48g / L Co, SiO 2 0.17g / L; leaching residue 68.22g, containing 20.72% Co; cobalt leaching rate 66.43%; copper not leaching. "External, all the other are identical with embodiment 1 described.

Embodiment 3

[0151] Except that the leaching conditions are: "liquid-solid ratio 5:1, temperature 100°C, stirring speed 1000 rpm, leaching time 4h;" and test results: "leach solution 1017mL, Co 23.78g / L; leaching residue 72.35g Containing Co 23.56%; Cobalt leaching rate 59.52%; Copper is not leached." Outside, all the other are identical with embodiment 1 description.

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Abstract

The invention relates to a method of lixiviating a white metal with vitriol and a charged churn of lixiviation tank. The method is as follows; the white metal is ground subtly as a lixiviation raw material; in lixiviation phase 1, add certain amount of white metal into a reactor, confect lixiviation solution with a liquid / solid ratio of 5:1 using H2SO4; churn lixiviate under the temperature of 85 - 100 DEG C; in lixiviation phase 2, lead the air to oxidize a lixiviated copper, under the temperature of 80- 85 DEG C, charge a turbine and churn lixiviate; slag and filtrate are generated after a filtration and rinse of pulp, magnetic material is selected and return to lixiviation phase 1; slag and filtrate are generated after the filtration and rinse of pulp, and the pulp is recycled; the lixiviation solution is used as the stock solution for the recycle of Cu and Co. Charge-churn the lixiviation tank comprises a stirrer, a beaker, the lixiviation tank is placed upon an electric cooker, a churn shaft and a blade are made of titanium, two pieces of PTFE baffles are arranged inside the beaker, a charging tube is a glass tube with a nozzle, the outlet of the nozzle is positioned between the blade and the shaft, a lid is supplied on the beaker.

Description

technical field [0001] The invention relates to the field of nonferrous metal hydrometallurgy, and more specifically relates to a method for leaching white metal with sulfuric acid and an aeration stirring leaching tank used in the method. Background technique [0002] White metal is one of the important cobalt raw materials imported from Africa. It is a copper, iron and cobalt alloy obtained by reducing and smelting the converter slag obtained during the converter blowing process in the copper smelting process. As we all know, Zambia's Copperbelt ore belt (and the adjacent Zaire DRC ore belt) is a world-renowned copper mine, and it is also one of the world's major cobalt ore belts. Converter slag containing a large amount of cobalt has been piled up in the local area. for nearly sixty years. [0003] In recent years, the local government and other countries, including China, have successively built factories in the above-mentioned areas to produce white metal. At present...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22B3/08C22B3/22C22B1/14B03C1/02
CPCY02P10/20
Inventor 王魁珽徐庆新
Owner CHINA ENFI ENGINEERING CORPORATION