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Method for resource utilization of copper smelting smoke

A copper smelting and recycling technology, applied in the field of metallurgy, can solve problems such as high process cost, arsenic pollution, and low arsenic recovery rate, and achieve the effect of simple process flow, good effect, and high resource utilization rate

Active Publication Date: 2021-01-22
云南省生态环境科学研究院
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The fire method is mainly to volatilize arsenic into the dust, leaching the calcine to recover copper, etc. It was widely used in early industrial applications, but the recovery rate of arsenic is low, and it is difficult to avoid the problem of arsenic pollution.
The wet method can be divided into several categories: sulfuric acid system, chloride system and alkaline system. In recent years, a lot of research has been done on the alkaline leaching process, but the cost of this process is relatively high, and arsenic enters the solution in the form of sodium arsenate. Convert and recycle

Method used

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  • Method for resource utilization of copper smelting smoke
  • Method for resource utilization of copper smelting smoke
  • Method for resource utilization of copper smelting smoke

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Embodiment 1: the method for resource utilization of copper smelting dust, such as figure 1 As shown, the specific steps are as follows:

[0025] (1) Fully mix the copper smelting dust and biological agent to obtain the mixed material. The biological agent is a mixture of sulfur-loaded biochar, microsilica fume, arsenic-enriched plant straw biochar, sulfuric acid and water. It is divided into 20% sulfur-loaded biochar, 20% micro-silica fume, 30% arsenic-enriched plant straw biochar, 10% sulfuric acid, and 20% water, and the quality of biological preparations accounts for 1% of the mass of copper smelting smoke. Carry out low-temperature dearsenization at 350°C to obtain white arsenic and dearsenic dust;

[0026] (2) Ultrasonic cleaning the arsenic removal dust obtained in step (1), and then performing vulcanization pretreatment to obtain the pretreated arsenic removal dust material;

[0027] (3) Grinding the pretreated arsenic-removing dust material in step (2) to -0....

Embodiment 2

[0035] Embodiment 2: the method for resource utilization of copper smelting dust, such as figure 1 As shown, the specific steps are as follows:

[0036] (1) Fully mix the copper smelting dust and biological agent to obtain the mixed material. The biological agent is a mixture of sulfur-loaded biochar, microsilica fume, arsenic-enriched plant straw biochar, sulfuric acid and water. Divided into 40% of sulfur-loaded biochar, 10% of silica fume, 20% of arsenic-enriched plant straw biochar, 15% of sulfuric acid, and 15% of water, and the quality of biological preparations accounted for 2% of the mass of copper smelting dust. Low-temperature dearsenization at 450°C to obtain white arsenic and arsenic removal dust;

[0037] (2) Ultrasonic cleaning the arsenic removal dust obtained in step (1), and then performing vulcanization pretreatment to obtain the pretreated arsenic removal dust material;

[0038] (3) Grinding the pretreated arsenic-removing dust material in step (2) to -0.0...

Embodiment 3

[0046] Embodiment 3: the method for resource utilization of copper smelting dust, such as figure 1 As shown, the specific steps are as follows:

[0047] (1) Fully mix the copper smelting dust and biological agent to obtain the mixed material. The biological agent is a mixture of sulfur-loaded biochar, microsilica fume, arsenic-enriched plant straw biochar, sulfuric acid and water. It is divided into 50% sulfur-loaded biochar, 20% micro-silica fume, 10% arsenic-enriched plant straw biochar, 10% sulfuric acid, and 10% water, and the quality of biological preparations accounts for 3% of the mass of copper smelting smoke. Low-temperature dearsenization at 550°C to obtain white arsenic and dearsenic dust;

[0048] (2) Ultrasonic cleaning the arsenic removal dust obtained in step (1), and then performing vulcanization pretreatment to obtain the pretreated arsenic removal dust material;

[0049] (3) Grinding the pretreated arsenic-removing dust material in step (2) to -0.074mm by m...

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Abstract

The invention discloses a method for resource utilization of copper smelting smoke. The method comprises the following steps of mixing the copper smelting smoke dust with a biological agent, performing low-temperature arsenic removal to obtain white arsenic and arsenic-removed smoke dust, performing ultrasonic cleaning on the arsenic-removed smoke dust, then conducting vulcanizing to obtain a pretreated arsenic-removed smoke dust material, grinding the material, and performing bulk flotation to obtain flotation bulk concentrate and flotation tailings; adding the biological agent into the flotation bulk concentrate and the flotation tailings respectively, performing low-temperature arsenic removal to obtain white arsenic, arsenic-removed bulk concentrate and arsenic-removed tailings, performing microwave activation on the arsenic-removed bulk concentrate, enabling the arsenic-removed bulk concentrate to enter a fuming furnace for treatment, and promoting valuable metals such as copper,lead and zinc in the bulk concentrate to volatilize to form smoke dust; and then conducting collection through a bag collector to obtain copper-lead-zinc fuming concentrate, discharging fuming furnacetailings from the tail of a furnace body, and obtaining mineral powder after water quenching treatment, wherein the mineral powder can be used as a cement admixture, and the arsenic-removed tailingscan be used for manufacturing porous materials and ecological restoration materials.

Description

technical field [0001] The invention relates to a method for resource utilization of copper smelting smoke and dust, which belongs to the technical field of metallurgy. Background technique [0002] In recent years, my country's copper smelting capacity has continued to expand. In 2017, the output of refined copper reached 8.9 million tons, but the proportion of recycled copper was only 30%, and the self-sufficiency rate of raw materials was seriously insufficient, only 30% to 40%. In order to alleviate the shortage of raw materials, smelting enterprises deal with a relatively large proportion of complex materials, especially the promotion of matte-making and gold-catching technology, and the proportion of processing high-arsenic gold concentrates increases, which further increases the amount of arsenic entering copper smelting enterprises. According to a rough estimate, nearly 100,000 tons of arsenic enter copper smelting enterprises every year. During the smelting process...

Claims

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Application Information

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IPC IPC(8): C22B7/02C22B13/02C22B15/00C22B19/20C22B19/30C22B30/04C04B7/147
CPCC22B7/02C22B30/04C22B15/0056C22B13/025C22B19/30C22B19/20C04B7/147Y02P10/20Y02P40/10
Inventor 杨子轩毕廷涛吴文卫王统牛学奎
Owner 云南省生态环境科学研究院
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