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Dearsenifying method for Cu-Zn-Co material

A material, copper and zinc technology, applied in the field of arsenic removal from copper ore smelting method and mineral pretreatment in non-ferrous metal smelting, can solve the problems of low recovery cost, high metal recovery rate, strict requirements, etc. The effect of high removal rate and low cost

Inactive Publication Date: 2002-10-23
史汉祥
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The process method has the characteristics of simple process, thorough separation, good comprehensive recovery of valuable metals in materials, high metal recovery rate, low recovery cost, and good economic benefits. It opens up a new way for the effective treatment of complex copper, zinc and cobalt materials. However, its process has strict requirements on the impurities such as arsenic, antimony, lead, tin, bismuth in the materials, especially the arsenic content. Most of the materials can meet this requirement, and can be directly added to the furnace for processing. smelting, however, there are quite a few such materials that contain more of the above-mentioned impurities and must be pre-treated before they can be loaded into the furnace for smelting

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0011] The sodium hydroxide solution is impregnated with the copper-zinc-cobalt material particles, the concentration of the sodium hydroxide solution is 120 g / liter, the mass ratio of the sodium hydroxide solution to the solid material is 5:1, the leaching time is 1 hour, and the leaching temperature is 90 degrees. Three-stage countercurrent impregnation was adopted.

[0012] The chemical components of copper, zinc and cobalt materials before impregnation: Cu 23.33%, Zn 25.91%, Co 0.87%, Fe 1.63%, As 3.81%, S 6.88%, Pb 1.69%, Cd 3.15%, Ni 0.15%, Mn 0.47 %, Bi 0.012%, Sn 0.0066%, CaO 0.86%, MgO 1.09%, Al 2 o 3 0.16%, SiO 2 3.96% and other trace ingredients.

[0013] The slag obtained after treatment with strong alkali solution contains Cu 35.48%, Zn 32.26%, Co 1.21%, Fe 1.74%, CaO 0.98%, MgO 1.05%, SiO 2 6.40%, As 0.17%, S 0.48%, Cd 4.26%, leaching rate As 97.7%, S 96%, Pb 53.8%, Zn 16.6%, this material can fully meet the new smelting needs of copper, zinc and cobalt se...

Embodiment 2

[0027] The sodium hydroxide solution is impregnated with the copper-zinc-cobalt material particles, the concentration of the sodium hydroxide solution is 160 g / liter, the mass ratio of the sodium hydroxide solution to the solid material is 3:1, the leaching time is 0.5 hour, and the leaching temperature is 95 degrees. Two-stage countercurrent impregnation was used.

[0028] The sodium hydroxide solution becomes the leaching solution after impregnating the copper, zinc and cobalt material particles. After concentrated crystallization, the mother liquor is recycled to remove the impregnation material. After the crystallization mixture is dissolved in water, it is replaced with calcium hydroxide to recover calcium arsenate, and then the mother liquor is concentrated and crystallized to produce Glauber's salt, and then the residual liquid is used to wash the leaching slag and recycled to impregnate copper, zinc and cobalt materials.

Embodiment 3

[0030] The sodium hydroxide solution is impregnated with copper, zinc and cobalt material particles, the concentration of the sodium hydroxide solution is 80 g / liter, the mass ratio of the sodium hydroxide solution to the solid material is 7:1, the leaching time is 2 hours, and the leaching temperature is 85 degrees. Four-stage countercurrent impregnation is adopted.

[0031] The sodium hydroxide solution becomes the leaching solution after impregnating the copper, zinc and cobalt material particles. After concentrated crystallization, the mother liquor is recycled to remove the impregnation material. After the crystallization mixture is dissolved in water, it is replaced with calcium hydroxide to recover calcium arsenate, and then the mother liquor is concentrated and crystallized to produce Glauber's salt, and then the residual liquid is used to wash the leaching slag and recycled to impregnate copper, zinc and cobalt materials.

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Abstract

The present invention adopts sodium hydroxide solution to soak copper-zinc-cobalt material granules, the concentration of sodium hydroxide solution is 80-160 g / L, the mass matching ratio of sodium hydroxide solution and solid material is 3-7:1, soaking time is 0.5-2 hr. and soaking temp. is 80-95 deg.C. Said invention possesses high removing rate of removing arsenic and sulfur, and the harmful impurity contained in the obtained product is little, and the copper-zinc-cobalt crystal position also is relatively raised.

Description

technical field [0001] The invention relates to the technical field of mineral pretreatment in non-ferrous metal smelting, in particular to the technical field of arsenic removal from copper ore smelting materials. Background technique [0002] Cobalt recovery from traditional copper-cobalt ore or cobalt-containing nickel ore is obtained by sulfuration reduction smelting of cobalt in converter slag. Due to the dispersed distribution of cobalt in the process, part of the cobalt is lost in the smelting slag. At the same time, a large amount of quartz flux is added in the converter blowing, and the enrichment factor of cobalt in the converter slag is low. The cobalt grade is low, and its further treatment is expensive and other problems. For this reason, the present inventors have invented a new fire smelting method, which uses metallurgical coke or other reducing agents to smelt in a special blast furnace or electric arc furnace by utilizing the different reduction order of o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22B1/00C22B3/12C22B30/04
CPCY02P10/20
Inventor 史汉祥
Owner 史汉祥
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