Resource recycling method of high-impurity-content copper smelting slag

A technology of copper smelting slag and recovery method, which is applied in the direction of improving process efficiency, can solve the problems of not exerting economic value, not having economic benefits of copper smelting enterprises, and increasing costs.

Inactive Publication Date: 2016-05-25
YANGGU XIANGGUANG COPPER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These impurity elements not only have a great negative impact on the existing product quality, consume a lot of resources and energy, and increase the production cost of copper smelting enterprises, but also do not exert their inherent economic value, and do not contribute to copper smelting enterprises. Bring due economic benefits, one side is the cost increase, one side is no output economic benefits, the addition of both sides has brought a significant negative impact on the economic profit margin of copper smelting enterprises, and reduced the profitability of copper smelting enterprises
[0009] Furthermore, in recent years, with the rapid development of the copper smelting industry, the potential expansion of old smelters and new smelters has led to a rapid increase in copper output, and this trend will continue, resulting in an increasing supply of high-quality copper concentrates. getting nervous

Method used

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  • Resource recycling method of high-impurity-content copper smelting slag

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0106] The hot-melt smelting slag discharged from the flash smelting furnace is treated as the processing object, and the temperature is within the range of 1280°C. The molten copper smelting slag contains the following components in weight percentage: 1.2% copper, 0.72% lead, 5.88% Zinc, 1.2% arsenic, 0.39% antimony, 0.51% bismuth, 0.02% tin. Include the following steps:

[0107]1) Add the molten copper smelting slag melt into the slag holding container 5; then immerse the liquid inlet pipe 2 and the liquid outlet pipe 3 into the slag holding container 5 to a certain depth below the upper liquid level of the copper smelting slag melt, and then Turn on the vacuum pump to evacuate the cavity in the refining furnace 1 into a vacuum state. At this time, the copper smelting slag melt in the slag container 5 rises and flows into the cavity of the refining furnace 1 along the cavity channels in the liquid inlet pipe 2 and the liquid outlet pipe 3. cavity;

[0108] 2) Inject the dr...

Embodiment 2

[0115] The hot-melt smelting slag discharged from the flash smelting furnace is treated as the processing object, and the temperature is within the range of 1250°C. The molten copper smelting slag contains the following components in weight percentage: 1.4% copper, 0.52% lead, 4.50% Zinc, 1.0% arsenic, 0.23% antimony, 0.25% bismuth, 0.02% tin. Include the following steps:

[0116] 1) Add the molten copper smelting slag melt into the slag holding container 5; then immerse the liquid inlet pipe 2 and the liquid outlet pipe 3 into the slag holding container 5 to a certain depth below the upper liquid level of the copper smelting slag melt, and then Turn on the vacuum pump to evacuate the cavity in the refining furnace 1 into a vacuum state. At this time, the copper smelting slag melt in the slag container 5 rises and flows into the cavity of the refining furnace 1 along the cavity channels in the liquid inlet pipe 2 and the liquid outlet pipe 3. cavity;

[0117] 2) Inject the d...

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Abstract

The invention discloses a resource recycling method of high-impurity-content copper smelting slag. The process of removing impurity elements in the copper smelting slag is achieved by re-blowing outside oxygen-containing gas in a vacuum state inside a refining furnace, and the impurity elements in the copper smelting slag is removed to facilitate production of higher-purity higher-quality down-stream products; then the impurity elements are recovered in an oxide state to obtain a condensed-state oxide mixture of the impurity elements, and the mixture is sold out in the form of a metal product. According to the resource recycling method, various copper minerals are converted into a copper oxide phase and various iron minerals are converted into a hematite phase by fully oxidizing the hot-melting copper smelting slag, wholly oxidizing the copper minerals and iron minerals and conducting oxidation separation on mixed copper and iron minerals to facilitate follow-up copper, iron and silicon recovery by adopting a beneficiation treatment process; economic benefits are brought to copper smelting enterprises, the earning capacity of the copper smelting enterprises is improved, meanwhile resource waste is reduced, and environmental pollution is reduced.

Description

technical field [0001] The invention relates to the technical field of resource recovery and environmental protection, in particular to a resource recovery method for high-impurity copper smelting slag. Background technique [0002] In the copper smelting industry, pyrometallurgy is usually used to extract copper from copper sulfide concentrate. The process is generally: copper sulfide ore → mining process → copper concentrate → smelting process → matte + smelting slag → blowing Process → blister copper + blowing slag → anode refining process → anode copper → electrolytic refining process → high-purity cathode copper. [0003] Copper smelting slag includes a variety of slags produced in the copper smelting production process, most of which are smelting slag, and a small part of blowing slag and so on. Among them, copper smelting slag mainly includes 0.90% to 3.0% Cu, 35% to 44% Fe, and 25% to 35% SiO 2 . [0004] The purpose of the current copper smelting slag treatment i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22B7/04C22B15/00C22B19/30C22B13/02C22B30/02C22B30/04C22B30/06C22B25/06C22B25/02
CPCC22B7/001C22B7/04C22B13/025C22B15/0054C22B19/30C22B25/02C22B25/06C22B30/02C22B30/04C22B30/06Y02P10/20
Inventor 杨伟燕
Owner YANGGU XIANGGUANG COPPER
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