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System for treating copper slag system and treating method thereof

A technology of copper slag and rotary hearth furnace, which is applied in the field of comprehensive utilization of copper slag, can solve the problems of increased construction cost, low heat utilization efficiency, and high production cost, and achieves the goals of saving investment, reducing energy consumption, and reducing fragmentation Effect

Pending Publication Date: 2017-02-22
JIANGSU PROVINCE METALLURGICAL DESIGN INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] Based on the above, it can be seen that in the current rotary hearth furnace process, the drying of the green pellets and the cooling of the reduced product are processed by different equipment and processes, which occupy a large area, the process flow is long, and the heat utilization efficiency is low, which not only increases the construction cost Large, it will also cause problems such as high energy consumption indicators and high production costs, which need to be improved urgently

Method used

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  • System for treating copper slag system and treating method thereof
  • System for treating copper slag system and treating method thereof
  • System for treating copper slag system and treating method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0065] Mix copper slag with iron content of 37.19%, lead content of 0.73%, and zinc content of 1.03% into a certain amount of reducing agent, additives, and binders, and then make water-containing copper slag green pellets in the pelletizing device S100. The particle size is 8mm, and the water content is 12%. The water-containing raw balls enter the rotary hearth furnace through the feeding channel of the material distribution device.

[0066] The distributing device is a chute distributor, which is horizontally arranged between the distributing area 1 and the cooling area 5 of the rotary hearth furnace. The linking device 16 is fixed in the rotary hearth furnace by the fixed linking device 16, and vibrating feeding is carried out through the transmission of the vibrator 15, and the outlet of the bottom chute is located above the material distribution area 1.

[0067] The distance between the two ends of the chute distributor along the radial direction of the rotary hearth fur...

Embodiment 2

[0080] Mix copper slag with iron content of 38.24%, lead content of 0.53%, and zinc content of 2.17% into a certain amount of reducing agent, additives, and binders, and then make water-containing copper slag green pellets in the pelletizing device S100. The particle size is 12mm, and the water content is 14%. The water-containing raw pellets enter the rotary hearth furnace through the feeding channel of the distribution device.

[0081] The distributing device is a chute distributor, which is horizontally arranged between the distributing area 1 and the cooling area 5 of the rotary hearth furnace. The linking device 16 is fixed in the rotary hearth furnace by the fixed linking device 16, and vibrating feeding is carried out through the transmission of the vibrator 15, and the outlet of the bottom chute is located above the material distribution area 1.

[0082] The distance between the two ends of the chute type distributor along the radial direction of the rotary hearth fur...

Embodiment 3

[0095] Mix copper slag with 40.02% iron content, 0.32% lead content, and 1.59% zinc content into a certain amount of reducing agent, additives, and binders, and then make water-containing copper slag green pellets in the pelletizing device S100. The particle size is 16mm, and the water content is 13%. The water-containing raw pellets enter the rotary hearth furnace through the feeding channel of the distribution device.

[0096] The distributing device is a chute distributor, which is horizontally arranged between the distributing area 1 and the cooling area 5 of the rotary hearth furnace. The linking device 16 is fixed in the rotary hearth furnace by the fixed linking device 16, and vibrating feeding is carried out through the transmission of the vibrator 15, and the outlet of the bottom chute is located above the material distribution area 1.

[0097] The distance between the two ends of the chute distributor along the radial direction of the rotary hearth furnace and the s...

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Abstract

The invention discloses a system for treating copper slag system and a treating method thereof. The system comprises a pellet molding device, a rotary hearth furnace direct reduction system, a melt separation device and a glass ceramic preparing device. The invention further discloses a method applying the system for treat the copper slag. The method comprises the steps of preparing a green pellet containing water through the pellet molding device after evenly mixing the copper slag, additives, a reducing agent and a binder; conducting reducing roasting on the green pellet through the rotary hearth furnace; sending the reduction product pellet into the melt separation device to be subjected to melt separation to obtain melted iron and liquid slag; sending the liquid slag into the glass ceramic preparing device to obtain a glass ceramic product. The unbaked copper slag green pellet is directly put into the furnace, the drying process at the front end of the technology is abandoned, therefore, investment is saved, and energy consumption is reduced; the green pellet containing water achieves drying preheating in the furnace while lead and zinc are recycled, and reduction effect of iron is further improved.

Description

technical field [0001] The invention relates to a system for processing copper slag, and further relates to a method for using the system to process copper slag, which belongs to the field of comprehensive utilization of copper slag. Background technique [0002] Copper slag is the waste slag produced during the smelting process of non-ferrous metals lead and zinc, which contains a large amount of valuable metals and highly mobile elements, which will be released into the natural environment after natural weathering and leaching during the open-air storage process. Soil and water resources and even human life are seriously endangered. [0003] The direct reduction process of the rotary hearth furnace mostly adopts the process of material forming (briquetting or pelletizing)-drying-direct reduction. The formed pellets need to be dried before they can be placed in the rotary hearth furnace. Therefore, a separate drying equipment must be set up for In addition, the metallized ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22B7/04C22B1/248C22B1/242C22B13/02C22B19/20C22B19/30C21B13/00C03C10/00C03C6/10
CPCC03C10/0063C21B13/0006C22B1/242C22B1/248C22B7/001C22B7/04C22B13/025C22B19/20C22B19/30Y02P10/20
Inventor 陈文亮刘占华王欣王岩薛逊丁银贵吴道洪
Owner JIANGSU PROVINCE METALLURGICAL DESIGN INST