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Preparation method of high-purity copper bar

A high-purity, copper ore technology, applied in contact manufacturing, cable/conductor manufacturing, electrical components, etc., can solve problems such as shrinkage, low copper utilization, and copper vents, so as to reduce damage and improve utilization efficiency, reducing the effect of casting porosity

Pending Publication Date: 2021-07-09
JIANGXI ZHONGSHENG METAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In recent years, with the sustained and rapid development of the national economy, the output and consumption of copper busbars in my country have also increased significantly. However, the utilization rate of copper in copper mines is not high, and the existing copper busbar manufacturing process will cause internal pores and shrinkage of copper busbars. Pine and other defects

Method used

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  • Preparation method of high-purity copper bar
  • Preparation method of high-purity copper bar

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] A kind of high-purity copper bar preparation method that the present invention proposes, comprises the following steps:

[0024] 1) Crushing the copper ore to a diameter of ≤200mm to obtain crushed copper ore;

[0025] 2) Put the crushed copper ore into the melting furnace, calcined at a high temperature at 250° C., take it out after 1 hour, and obtain the crushed material;

[0026] 3) Put the crushed material into a sulfurous acid solution with a weight ratio of 1:2 for electrolytic leaching, and perform leaching at normal temperature for 25 minutes to obtain high-purity metal copper;

[0027] 4) Making copper rods from metallic copper, putting the copper rods into an extruder, and extruding them continuously for 3 times at a temperature of 350° C. to obtain copper bars;

[0028] 5) Cool the copper bar in step 4, cool it down to room temperature 20°C at a cooling rate of 5°C / s, and then roll it up for storage.

Embodiment 2

[0030] A method for preparing a high-purity copper bar, comprising the following steps:

[0031] 1) Crushing the copper ore to a diameter of ≤200mm to obtain crushed copper ore;

[0032] 2) Put the crushed copper ore into the melting furnace, calcined at a high temperature at a temperature of 300° C., take it out after 2 hours, and obtain the crushed material;

[0033] 3) Put the crushed material into a sulfurous acid solution with a weight ratio of 1:2 for electrolytic leaching, and perform leaching at normal temperature for 30 minutes to obtain high-purity metal copper;

[0034] 4) Make copper rods from metal copper, put the copper rods into the extruder, and extrude continuously for 4 times at a temperature of 450°C to obtain copper bars;

[0035] 5) Cool the copper bar in step 4, cool it down to room temperature 20°C at a cooling rate of 5°C / s, and then roll it up for storage.

Embodiment 3

[0037] A method for preparing a high-purity copper bar, comprising the following steps:

[0038] 1) Crushing the copper ore to a diameter of ≤200mm to obtain crushed copper ore;

[0039] 2) Put the crushed copper ore into the melting furnace, calcined at a high temperature at 350°C, take it out after 2.5 hours, and obtain the crushed material;

[0040] 3) Put the crushed material into a sulfurous acid solution with a weight ratio of 1:2 for electrolytic leaching, and perform leaching at normal temperature for 45 minutes to obtain high-purity metal copper;

[0041] 4) Making copper rods from metallic copper, putting the copper rods into an extruder, and extruding them continuously for 5 times at a temperature of 550° C. to obtain copper bars;

[0042] 5) Cool the copper bar in step 4, cool it down to room temperature 20°C at a cooling rate of 5°C / s, and then roll it up for storage.

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Abstract

The invention discloses a preparation method of a high-purity copper bar. The method comprises the following steps of: 1) crushing copper ore until the diameter is less than or equal to 200mm to obtain crushed copper ore; (2) putting the crushed copper ore into a smelting furnace to be subjected to high-temperature calcination at the temperature of 250-350 DEG C for a preset time and then taking out the product to obtain crushed aggregates; (3) putting the crushed materials into a sulfurous acid solution with the weight ratio being 1: 2 to be subjected to electrolytic leaching and obtaining high-purity metal copper; (4) preparing a copper rod from metal copper, putting the copper rod into an extruding machine, and continuously extruding for 3-5 times at the temperature of 350-550 DEG C to obtain a copper bar; and (5) cooling the copper bar in the step (4) to normal temperature, and then rolling and storing the copper bar. According to the method, copper sulfide is converted into copper oxide through high-temperature calcination, and then metal copper is leached through electrolysis, so that the weight of the obtained metal copper is the highest, the utilization rate of copper is increased, and more copper bars can be manufactured with the same weight of copper ore.

Description

technical field [0001] The invention relates to the technical field of copper bar preparation, in particular to a high-purity copper bar preparation method. Background technique [0002] Copper busbar is commonly known as copper busbar, and copper busbar is a main variety of copper processing materials. Copper bus bar has high mechanical properties, good electrical conductivity, thermal conductivity, excellent corrosion resistance, electroplating, brazing, beautiful and beautiful metallic luster and good forming and processing properties, etc., so various products made of it Power transmission and transformation, electrical equipment, etc. have been widely used in the field of electric power. In recent years, with the sustained and high-speed development of the national economy, the output and consumption of copper busbars in my country have also increased significantly. However, the utilization rate of copper in copper mines is not high, and the existing copper busbar manu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01B13/00H01R43/16
CPCH01B13/00H01R43/16
Inventor 周涛
Owner JIANGXI ZHONGSHENG METAL