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Copper smelting method

A technology for smelting zone and smelting slag, used in crucible furnaces, electric furnaces, rotary drum furnaces, etc., can solve the problems of high cost, large equipment area, and long processing process.

Active Publication Date: 2018-02-16
CHINA ENFI ENGINEERING CORPORATION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The main purpose of the present invention is to provide a copper smelting method to solve the problems in the prior art that the processing process for smelting slag after copper smelting is long, the equipment occupies a large area, and the cost is high

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0070] Copper smelting plant such as figure 1 As shown, wherein: the bottom of the smelting zone and the depleted zone form a 1200mm step, the melting pool in the smelting zone is deep, the thickness of the first copper matte is 1200mm, the thickness of the second copper matte layer in the depleted zone and the settlement zone is 300mm, and the thickness of the slag layer in each zone is 1200mm.

[0071] The metallurgical process is as follows:

[0072] Add gold concentrate, most of copper concentrate, flux quartz stone, return material (blowing slag, refining slag, smoke dust, cold material of copper matte launder and black copper returned by electrolysis) and block For coal, oxygen-enriched air is introduced through the first tuyere at the side of the smelting zone, the oxygen content is 85vol%, the pressure is 0.15MPa, and the first high-grade copper matte is produced, with a grade of 78wt%;

[0073] The smelting slag flows into the depletion zone from the bottom of the f...

Embodiment 2

[0077] Copper smelting plant such as figure 2 As shown, where: the bottom of the smelting zone and the depleted zone form a 500mm bulge, the depths of the smelting zone and the depleted zone are both deeper than the subsidence zone, and the depletion zone is 500mm deeper than the subsidence zone. The thickness of the first copper matte is 500mm, the thickness of the second copper matte layer in the depletion zone is 500mm, the thickness of the second copper matte layer in the settlement zone is 20mm, and the thickness of the slag layer in each zone is 600mm.

[0078] Technology in the copper smelting process is identical with embodiment 1, and difference is:

[0079] The first copper matte is discharged from the first copper matte outlet arranged in the smelting zone, and the second copper matte is discharged from the second copper matte outlet arranged at the side of the depletion zone.

Embodiment 3

[0081] Copper smelting plant such as figure 2 As shown, the parameter thickness is equal to that of Example 2.

[0082] Technology in the copper smelting process is identical with embodiment 1, and difference is:

[0083] After overflowing, the second copper matte flows into the smelting zone from the raised structure, mixes with the first copper matte, and is discharged through the copper matte outlet arranged at the bottom of the smelting zone.

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Abstract

The invention provides a copper smelting method. The copper smelting method is conducted in a copper smelting device provided with an inner cavity. The inner cavity comprises a smelting area, a dilution area and a sedimentation area. The dilution area and the smelting area are separated through a first separation wall, and the dilution area communicates with the smelting area through a smelting slag channel. The sedimentation area and the dilution area are separated through a second separation wall. The sedimentation area is located on the side, away from the smelting area, of the dilution area, and the sedimentation area communicates with the dilution area through a dilution slag channel. The copper smelting method comprises the following steps that copper concentrates are smelted in thesmelting area, and first copper sulphate and smelting slag are obtained; the smelting slag is subjected to dilution treatment in the dilution area, and second copper sulphate and dilution slag are obtained; and the second copper sulphate and the dilution slag are subjected to sedimentation separation in the sedimentation area. Through the copper smelting method, copper smelting, dilution and sedimentation separation are concentrated in a furnace, waste slag with a very low copper content is obtained while high-grade copper sulphate is produced, the number of procedures is small, and the technological process is shortened greatly.

Description

technical field [0001] The invention relates to the field of nonferrous metallurgy, in particular to a copper smelting method. Background technique [0002] In the existing copper smelting process, the slag directly produced by the smelting furnace has a high copper content (1-4wt%) and cannot be directly used as the waste slag, and needs to be reprocessed to recover valuable metals such as copper therein. The current commonly used method is as follows: the smelting slag or mixed melt produced by the smelting furnace is processed in a rotary leaning furnace or a sinking electric furnace, and the slag and copper matte can be separated to produce 0.6-1.0wt% copper. Spoil. In order to further recover the valuable metals in the waste slag, some factories have added a slag beneficiation process. The disadvantage of this treatment method is that the process flow is long, the equipment occupies a large area, and the equipment investment and operating costs are high. In addition,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22B15/00
CPCC22B15/0028
Inventor 李锋张振民尉克俭李海春周钢陆金忠蒋继穆梁帅表冯双杰李兵许欣黎敏曹珂菲李东波郝小红
Owner CHINA ENFI ENGINEERING CORPORATION