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Smelting method for separating Cu, Zn and Co from each other

A copper-zinc and matte technology is applied in the metallurgical field of non-ferrous metal metallurgy and polymetallic complex ores. It can solve the problems of inability to perform normal smelting and high zinc content, and achieve the effects of low recovery cost, thorough separation and good economic benefits.

Inactive Publication Date: 2002-12-04
史汉祥
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The traditional matte smelting method for copper, zinc and cobalt materials, as we all know, cannot be smelted normally due to the high zinc content

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] The copper-zinc-cobalt material used is a high-cobalt material, and its chemical composition is: Cu30%, Zn30%, Co1.5%, the remaining gangue components and trace elements. For its materials, the new smelting method adopts the method of directly obtaining cobalt-rich slag. Because the valuable components of copper, zinc and cobalt in the material are extremely high, the total is as high as 61.5%, including the oxygen content in the form of oxides as high as 90%, and the gangue component, that is, the slagging part is very small. The smelting method uses part of the self-produced blast furnace slag to return to the smelting method to directly produce cobalt-rich slag.

[0044]100% sintered lump, 15% limestone, 18% metallurgical coke, based on the sintered lump, these charges are loaded into the top of the blast furnace in batches and layers, and hot air is blown into the tuyeres at the lower part of the blast furnace for smelting. Secondary hot air is blown into the secon...

Embodiment 2

[0091] The copper-zinc-cobalt material used in this embodiment is a low-cobalt material, and its chemical composition is: Cu25%, Zn25%, Co0.5%, the remaining gangue components and trace elements. For the treatment of its materials, the present invention adopts the method of indirectly obtaining cobalt-rich slag. Since there are many slag-forming elements in the material and the cobalt content is small, cobalt-rich slag cannot be directly produced. Therefore, the blast furnace adopts higher alkalinity and reducing atmosphere for smelting, so that most of the cobalt enters into the blister copper, and the cobalt in the blister copper is recovered in the oxide slag refined by the anode, and the cobalt-rich slag of the same grade as in Example 1 can be obtained.

[0092] In order to maintain the high temperature in the tuyere area of ​​the blast furnace, so that the zinc oxide can be easily reduced. The high temperature in the tuyere area is achieved by ensuring the high melting ...

Embodiment 3

[0113] The material processed in this embodiment is a low-zinc copper-zinc-cobalt material, and its chemical composition is Cu30%, Zn10%, Co1.0%, and the remaining gangue components and trace elements. Because there are many slag-forming elements in this material, although the cobalt content is high, it still fails to produce satisfactory cobalt-rich slag. Therefore, obtain cobalt-rich slag with the technical condition identical with embodiment 2.

[0114] In order to maintain the high temperature in the tuyere area of ​​the blast furnace, so that the zinc oxide can be easily reduced. The high temperature in the tuyere area is achieved by ensuring the high melting point of the slag. The blast furnace mixes limestone as a flux to make the slag alkalinity The melting point of slag is above 1050°C.

[0115] Add carbon-containing reducing agent metallurgical coke, and at the same time adjust the air-to-material ratio so that the furnace flue gas is blown into the secondary air...

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Abstract

A smelting method for separating Cu, Zn and Co from the ore material containing Cu (10-50%), Zn (10-40%) and Co (0.2-2%) features that after the said ore material is pretreated from removing harmful impurities or sintered for removing sulfur, it is molten in blass furnace by selective reduction. As a result, the copper in coarse copper mode is discharged, the zinc in zinc oxide is collected from chimny, and the cobalt in slag mode is recovered. Its advantages are high separation effect and metal recovery rate.

Description

technical field [0001] The invention relates to the technical field of metallurgy of non-ferrous metals, in particular to the technical field of metallurgy of refractory polymetallic complex ores. Background technique [0002] The traditional method of cobalt recovery in copper-cobalt sulfide ore is to recover cobalt in the process of copper smelting. The two processes of copper smelting, that is, the distribution of cobalt in the matte smelting and converter blowing processes are different. During matte smelting, about 60-70% of the cobalt enters the matte, and the remaining 30-40% enters the smelting slag. Usually, the cobalt-rich converter slag is smelted to produce white metal, and the cobalt-rich alloy is further processed by various processes to obtain cobalt products. Due to the scattered distribution of cobalt in the copper smelting process, part of the cobalt is lost in the smelting slag, and part of it is no longer recycled due to the low grade of cobalt. At the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22B15/02C22B19/36C22B23/00
Inventor 史汉祥
Owner 史汉祥
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