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Method for producing white matte by mixed smelting of scrap copper and copper concentrate

A technology for scrap copper and copper concentrate, applied in the direction of improving process efficiency, can solve the problems of high copper content in slag, small amount of scrap copper, frequent operation, etc., so as to improve the utilization rate of sulfur and save facility investment. , The effect of process energy saving and environmental protection

Inactive Publication Date: 2012-06-27
XIZHI ELECTRONICS MATERIALS BRANCH YUNNAN COPPER IND GRP +3
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This is mainly due to the shortcomings of limited technology introduction, large investment, high energy consumption, intermittent operation, frequent operation, short furnace life, and high copper content in slag. It cannot be added directly, thus reducing the input amount of waste miscellaneous copper, resulting in a small amount of waste miscellaneous copper treatment

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] The composition of the copper concentrate used is:

[0021] the element

Cu(%)

Fe(%)

S(％)

SiO 2 (%)

As(%)

MgO+Al 2 o 3 (%)

content

26

28

28

14

0.4

2.5

[0022] The composition of anthracite used as fuel is:

[0023] Element

fixed carbon

Volatile matter

Ash

total

％

70.00

10.00

20.00

100.00

[0024] The batching is carried out according to the mass ratio of the copper content of the copper concentrate to the copper content of the waste miscellaneous copper = 1:0.5. In the smelting operation process of the top-blown furnace (inner diameter 4 meters, furnace height 17.6 meters), add 30 tons of copper concentrate and scrap copper scraps with a copper content of 37% (with a particle size of 2 to 150mm) (addition amount per hour) 10.55 tons, while adding 1.5 tons of anthracite, 10588N m 3 Oxygen-enriched air with an oxyg...

Embodiment 2

[0027] The composition of the copper concentrate used is:

[0028] the element

Cu(%)

Fe(%)

S(％)

SiO 2 (%)

As(%)

MgO+Al 2 o 3 (%)

content

24

19.8

23

11

0.3

2.7

[0029] The standard coal composition used as fuel is:

[0030] Element

fixed carbon

Volatile matter

Ash

total

％

70.00

12.00

18.00

100.00

[0031] The batching is carried out according to the mass ratio of the copper content of the copper concentrate to the copper content of the waste miscellaneous copper = 1:0.4. In the smelting process of the horizontal oxygen bottom-blown furnace (furnace specification Φ3.1×11m), add 8 tons of copper concentrate and 3 tons of scrap copper scrap with copper content of 26% per hour, and add additional per hour 0.2 tons of anthracite, 2000N m 3 Oxygen-enriched air with an oxygen concentration of 90% and 0.1 tons of quartz stone (...

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Abstract

The invention relates to a process for producing white matte by mixed smelting of scrap copper and copper concentrate. Based on the traditional matte smelting process, the materials are mixed according to the mass ratio of the copper content of copper concentrate and scrap copper of 1:0.5-0.25, and the scrap copper is continuously added into a melting furnace; and coal the amount of which is 2% to 9% of the amount of the copper concentrate is added, and the white matte is produced by smelting in oxygen-enriched air with the volume concentration of 60% to 95%. The process of the invention has the advantages of low investment, low energy consumption, simple implementation, convenient operation, energy saving, environmental protection and the like, can effectively treat scrap copper, produces white matte, can reduce the copper content in slag, and overcomes the shortcomings that the copper content in the slag is high in the traditional high-grade matte smelting method.

Description

technical field [0001] The invention relates to the technical field of heavy nonferrous metallurgy, in particular to a method for producing white matte by mixing and smelting waste miscellaneous copper and copper concentrate. Background technique [0002] In order to maximize production and reduce unit production costs with the least investment, copper smelting enterprises, on the one hand, produce high-grade matte through various smelting methods for converter blowing; The materials usually include refining slag cold material, outsourced cold blister copper, high-grade waste miscellaneous copper, scrap poles, waste anode plates, etc. [0003] So far, many smelters at home and abroad can obtain high-grade matte through various smelting techniques under oxygen-enriched conditions. In the flash smelting method, the matte grade produced by Guizhou Smelter is 65%, and Outukump, Finland further increases the oxygen enrichment concentration to reach 66%-70%. The matte grade of t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22B15/00
CPCY02P10/20
Inventor 沈南山沈强华顾晓春刘中华史谊峰陈雯王勇阴树标杨建军郭大为邓蕊吕萍
Owner XIZHI ELECTRONICS MATERIALS BRANCH YUNNAN COPPER IND GRP
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