Method for smelting pure copper or high-copper alloy material

A copper alloy and pure copper technology is applied in the field of smelting pure copper or high-copper-containing alloy raw materials, and can solve the problems of not considering the influence of oxidative burning loss, volatilization burning slag loss on smelting metal loss, low production efficiency, and the like, To achieve the effect of reducing investment in fixed assets and equipment operating costs, improving production efficiency, and improving the working environment

Inactive Publication Date: 2018-02-27
TONGLING HAIYUAN SUPERFINE POWDER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The metal loss easily caused by the existing smelting of pure copper or high-copper-containing alloy raw materials has only been improved on the fire-spraying smelting process of high-zinc brass, and no oxidation burning loss, volatilization burning loss, and slagging loss have been considered. The impact on the loss of smelting metals can only be achieved by low temperature without flame-injection smelting of high-zinc brass, and the production efficiency is very low

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] A method for smelting pure copper or high-copper-containing alloy raw materials proposed by the present invention comprises the following steps:

[0025] S1, preparation of covering agent and flux: charcoal should be placed in a sealed oven and baked at no lower than 800°C for 4 hours, and prevent moisture absorption before use; the covering agent is composed of 63% borax + 37% broken glass, and the covering agent Dry charcoal can also be used as a covering agent, but all require drying and removal of sundries;

[0026] S2. Preparation of crucible, melting equipment and tools: Before using the crucible, there should be no cracks and other damages that affect safety. The new crucible must be slowly heated at low temperature to prevent cracks. The old crucible should be cleaned of slag on the inner surface; When new graphite crucibles are used or when changing the type of smelting alloy, the crucible should be melted with alloys of the same brand to wash the furnace befor...

Embodiment 2

[0033] A method for smelting pure copper or high-copper-containing alloy raw materials proposed by the present invention comprises the following steps:

[0034] S1, preparation of covering agent and flux: charcoal should be placed in a sealed oven, baked at no lower than 800°C for 4 hours, and prevent moisture absorption before use; the covering agent is composed of 63% borax + 37% broken glass, the covering agent Dry charcoal can also be used as a covering agent, but all require drying and removal of sundries;

[0035] S2. Preparation of crucible, melting equipment and tools: before using the crucible, there should be no cracks and other damages that affect safety. The new crucible must be slowly heated at low temperature to prevent cracks. The old crucible should be cleaned of slag on the inner surface; When new graphite crucibles and replacement of smelting alloys are made, the crucibles should be melted with alloys of the same grade for washing before smelting; stirring ro...

Embodiment 3

[0042] A method for smelting pure copper or high-copper-containing alloy raw materials proposed by the present invention comprises the following steps:

[0043] S1, preparation of covering agent and flux: charcoal should be placed in a sealed oven, baked at no lower than 800°C for 4 hours, and prevent moisture absorption before use; the covering agent is composed of 63% borax + 37% broken glass, the covering agent Dry charcoal can also be used as a covering agent, but all require drying and removal of sundries;

[0044] S2. Preparation of crucible, melting equipment and tools: before using the crucible, there should be no cracks and other damages that affect safety. The new crucible must be slowly heated at low temperature to prevent cracks. The old crucible should be cleaned of slag on the inner surface; When new graphite crucibles and replacement of smelting alloys are made, the crucibles should be melted with alloys of the same grade for washing before smelting; stirring ro...

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Abstract

The invention discloses a method for smelting pure copper or a high-copper alloy material. The method comprises the following steps of S1, preparation of a covering agent and a fluxing agent; S2, preparation of a crucible, a smelting unit and tools; S3, preparation of metal furnace charge; S4, addition of a material; S5, replenishment of elements; S6, stirring reaction; and S7, furnace discharging; By means of the method, the smelting process of the material can be enhanced, the smelting cycle can be shortened, and the production efficiency can be improved; oxidation loss and volatilization loss of the alloy can be reduced, and combustion loss of flaming can be eliminated; impurity elements and gas inclusion in the alloy can be efficiently removed, and the metal casting yield can be increased; by manufacturing the low-viscosity powdery and dry slag, metal loss of furnace slag slagging-off is remarkably reduced, charcoal coverage is omitted, and consumption of charcoal is reduced by 20-25 kg/t; by means of the method, environmental pollution can be reduced, the labor environment can be improved, environmental protection equipment and occupied space are omitted, and fixed asset investment and equipment operating cost can be reduced.

Description

technical field [0001] The invention relates to the technical field of copper smelting, in particular to a method for smelting pure copper or a high-copper-containing alloy raw material. Background technique [0002] "Wang Biwen, Copper Processing Branch of China Nonferrous Metals Industry Association, "Market Research Report on Copper Alloy Condenser", June 2007", the article pointed out that in the copper alloy smelting process, metal loss is the main component of the casting cost. Compared with the international advanced level, there is still a certain gap in the metal loss of copper processing in my country. At present, the average metal loss level of each ton of copper processing materials produced in my country is about 50kg, while the metal loss of the international advanced level is about 20kg, which is 150% higher than the international advanced level. [0003] The traditional smelting of copper and copper alloys generally adopts atmospheric atmosphere, one layer o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C1/02C22C9/00C22C1/06C22B15/00
CPCC22C1/02C22B15/0028C22C1/06C22C9/00
Inventor 王东叶挺刚蒋海托余永刚
Owner TONGLING HAIYUAN SUPERFINE POWDER
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