Sulfurizing reduction and roasting and voltizing dearsenication method for copper-zine-cobalt material

A material and roasting technology, which is applied in the field of mineral pretreatment in non-ferrous metal smelting and arsenic removal from copper ore smelting method, can solve the problems of inability to remove arsenic, high metal recovery rate, low sulfur content, etc., to avoid post-processing Process problems, rational and scientific process design, high volatilization removal rate

Inactive Publication Date: 2002-11-06
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

Method used

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Examples

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Example Embodiment

[0013] Example 1

[0014] Copper zinc cobalt material 47%

[0015] Low sulfur vulcanizing agent chalcocite 47%

[0016] Carbonaceous material coke powder 6%

[0017] The above percentages are mass percentages,

[0018] The low-sulfur vulcanizing agent chalcocite preferably has a mass ratio of copper to sulfur greater than 2. Then use a ball mill to pulverize the material. In principle, the finer the particles, the better. Generally, the ball mill is about 100 mesh. Then choose a binder. Here, water is preferred, and granulation is carried out after humidification. In principle, the particle size only needs to adapt to the roasting furnace. There is no special requirement, but in order to take into account the reaction effect and granulation cost, the particle diameter should be controlled at 3-6mm range. At a temperature of 800 degrees, sulfidation reduction roasting is carried out in a rotary kiln with a controlled non-oxidizing atmosphere. The reduction roasting time is...

Example Embodiment

[0031] Example 2

[0032] Copper zinc cobalt material 48%

[0033] Low sulfur vulcanizing agent chalcocite 48%

[0034] Carbonaceous material pulverized coal 4%

[0035] The above percentages are mass percentages,

[0036] The firing temperature is controlled at 800 degrees,

[0037] Other as embodiment 1

Example Embodiment

[0038] Example 3

[0039] Copper zinc cobalt material 46%

[0040] Low sulfur vulcanizing agent chalcocite 46%

[0041] Carbonaceous material pulverized coal 8%

[0042] The above percentages are mass percentages,

[0043] The firing temperature is controlled at 800 degrees,

[0044] Other as embodiment 1

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PUM

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Abstract

The present invention relates to the dearsenication method of Cu-Zn-Co mineral in non-ferrous metal smelting developed for dearsenication at high efficiency. The present invention features that Cu-Zn-Co mineral in 36-58 wt%, chalocotie as sulfurizing agent in 36-58 wt% and carbon material as reductant in 4-8 wt% are crushed, mixed and pelletized before reducing roasted at 700-900 deg.c. The present invention has the advantages of reasonable technological process, less pollution and high dearsenication rate.

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 dispersion 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 to the converter blowing process. The enrichment factor of cobalt in converter slag is low, that is to say, the traditional method has problems such as low cobalt recovery rate, low cobalt grade in cobalt-rich slag, and high cost for further processing. 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 ele...

Claims

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Application Information

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IPC IPC(8): C22B1/02
Inventor 史汉祥
Owner 史汉祥
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