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Method for extracting copper, nickel and cobalt intermediate products from copper and cobalt ore at low cost

A low-cost, copper-cobalt technology, applied in the direction of improving process efficiency, can solve the problems of low-grade metal impurity metal content, large loss of valuable metal, large reagent consumption, etc., and achieve high leaching rate and low operating costs. , the effect of simple equipment

Inactive Publication Date: 2012-07-11
JIANGXI UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Due to the low grade of valuable metals and relatively high content of impurity metals in copper-cobalt ore, it is inevitable to cause problems such as large reagent consumption, long process, and large loss of valuable metals during its all-wet treatment process.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] After the ore is dried, it is ground by a grinding machine and sieved to take 100 mesh materials, put it into the reaction kettle, add 80% of the total acid amount and keep stirring, the stirring speed is controlled at 100rpm, start timing, and react for 5 minutes Add the remaining 20% ​​acid and control the solid-liquid ratio at 1:2.5. After reacting for 20 min, the solid and liquid were separated and washed. Add sodium carbonate to adjust the pH of the leaching solution to about 0.5, slowly add iron powder into the leaching solution and stir continuously, the stirring speed is about 100rpm, add the iron powder in three times, add 50% of the total amount for the first time, and add the total amount for the second time 30% of the amount, add the remaining iron powder for the third time and react for 30 minutes. After solid-liquid separation, the temperature of the copper-removed liquid is raised to 90°C, and ammonia water and hydrogen peroxide are continuously added dr...

Embodiment 2

[0025] After the ore is dried, it is ground by a grinding machine and sieved to take 200 mesh materials, put it into the reaction kettle, add 80% of the total acid amount and keep stirring, the stirring speed is controlled at 100rpm, start timing, and react for 5 minutes Add the remaining 20% ​​acid and control the solid-liquid ratio at 1:3.5. After reacting for 30 min, the solid and liquid were separated and washed. Add calcium carbonate to adjust the pH of the leaching solution to about 1.0, slowly add iron powder into the leaching solution and keep stirring at a stirring speed of about 100rpm, add iron powder in three times, add 50% of the total amount for the first time, and add the total amount for the second time 30% of the amount, add the remaining iron powder for the third time and react for 30 minutes. After solid-liquid separation, the temperature of the copper-removed liquid is raised to 90°C, and ammonia water and hydrogen peroxide are continuously added dropwise....

Embodiment 3

[0028] After the ore is dried, it is ground by a grinding machine and sieved to take 150 mesh materials, put it into the reaction kettle, add 80% of the total acid amount and keep stirring, the stirring speed is controlled at 100rpm, start timing, and react for 5 minutes Add the remaining 20% ​​acid and control the solid-liquid ratio at 1:3. After reacting for 30 min, the solid and liquid were separated and washed. Add sodium carbonate to adjust the pH of the leaching solution to about 1.5, slowly add iron powder into the leaching solution and stir continuously, the stirring speed is about 100rpm, add the iron powder in three times, add 50% of the total amount for the first time, and add the total amount for the second time 30% of the amount, add the remaining iron powder for the third time and react for 30 minutes. After solid-liquid separation, the temperature of the copper-removed liquid is raised to 90°C, and ammonia water and hydrogen peroxide are continuously added drop...

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PUM

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Abstract

The invention relates to a method for extracting copper, nickel and cobalt intermediate products from copper and cobalt ore at low cost. The method comprises the following steps of: crushing copper and cobalt ore by using a crusher, grinding by using an ore gridding machine into powder with the particle size of less than or equal to 100 meshes; placing the ore powder with the particle size of less than or equal to 100 meshes in a reaction kettle, performing agitation leach by using hydrochloric acid at normal temperature and normal pressure, and allowing copper, nickel, cobalt, iron, magnesium, and calcium in a form of chloride in the ore to enter lixivium; adjusting the pH value to be 0.5 to 1.5, and adding iron powder in an amount which is not less than 1.5 times that of the copper in the solution and replacing to remove copper; dropwise adding ammonia water and hydrogen peroxide simultaneously at the temperature of 90DEG C with continuous stirring to adjust the pH and ferrous oxide ions to generate goethite and remove iron; and extracting nickel and cobalt by using an organic extracting agent P204. The method is low in investment, energy consumption and production cost, and simple and reasonable; and leaching rate is high.

Description

technical field [0001] The invention relates to a low-cost method for extracting intermediate products of copper, nickel and cobalt from copper-cobalt ore, which can economically and effectively extract intermediate products such as copper, cobalt and nickel in copper-cobalt ore, and belongs to the field of non-ferrous metal hydrometallurgy. Background technique [0002] The "copper belt" of Africa is deep in the junction of Zambia and Zaire in the central and southern part of the African continent. It extends roughly in an arc from northwest to southeast, with a total length of about 800km and a width of about 60-100km. Copper and cobalt-based polymetallic associated deposits are gathered in the shale and shale, which is a folded "copper arc" formed by orogeny. [0003] The copper belt is rich in copper and cobalt resources, and has the characteristics of large ore bodies, thick ore beds, multiple ore coexistence, high grade, concentrated distribution, and shallow burial. S...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22B3/10C22B3/46C22B3/26C22B15/00C22B23/00
CPCY02P10/20
Inventor 李金辉熊道陵陈颢
Owner JIANGXI UNIV OF SCI & TECH
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