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A method for reducing impurity element manganese in waste brass

A technology of impurity element and yellow miscellaneous copper is applied in the field of reducing the impurity element manganese in waste yellow miscellaneous copper, which can solve the problem of high manganese content

Active Publication Date: 2021-11-30
NINGBO CHANGZHEN COPPER CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The present invention aims to overcome the problem of high manganese content in the brass regeneration raw materials in the prior art, and provides a method for reducing the impurity element manganese in waste brass miscellaneous copper. The brass raw materials are sorted and pretreated to obtain brass alloys, and put into Melting in the smelting furnace, after the raw materials are completely melted, add additives and slag accumulators, after heat preservation, refining, out of the furnace and casting ingots, and finally reduce the manganese content in brass by as much as 90%.

Method used

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  • A method for reducing impurity element manganese in waste brass
  • A method for reducing impurity element manganese in waste brass
  • A method for reducing impurity element manganese in waste brass

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042]

[0043] After pretreatment of waste yellow copper, the melting sampling is put into the melting furnace. The direct reading spectrometer Mn content is 0.518%; the melt temperature is adjusted to 994 ° C, adding an additive, after melting, the additive is melted, and the melt temperature is adjusted to 1026 ° C. After adding polygesidal agents, after melting, the polygenetic agent is melted, heat insulation for 15 min; the melt temperature is adjusted to 1012 ° C, refined, released and ingot. Direct reading spectral measuring ingot MN content 0.0596%, comparison results can be seen, and manganese content decreased by 88.5%.

Embodiment 2

[0045]

[0046] After pretreatment of waste yellow copper, the melting sampling is put into the melting furnace. The direct reading spectroscopy Mn content is 1.417%, the melt temperature is adjusted to 983 ° C, adding the additive, the additive is melted, and the temperature is 15 min; the melt temperature is adjusted to 1015 ° C. After adding polygesidal agents, after melting, the polymer is melted, and the temperature is held for 22min; the melt temperature is adjusted to 1007 ° C, refined, released, and ingots. Direct reading spectral measuring ingot MN content 0.172%, comparison results, the manganese content decreased by 87.84%.

Embodiment 3

[0048]

[0049] After pretreatment of waste yellow copper, the melting sampling was put into the melting furnace. The direct-reading spectroscopy Mn content was 2.31%, the melt temperature was adjusted to 1012 ° C, adding an additive, and the additive is melted, and the temperature is 10 min; the melt temperature is adjusted to 1037 ° C. After adding polygesidal agents, after melting, the polymerization agent is melted, the temperature is 26 min; the melt temperature is adjusted to 997 ° C, refined, released, and ingots. Direct reading spectral measuring ingot MN content 0.247%, comparison results, the manganese content decreased by 89.31%.

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Abstract

The invention relates to the technical field of melt purification in the copper smelting process, and aims at the problem of high manganese content in the brass regenerated raw materials in the prior art, and discloses a method for reducing manganese as an impurity element in waste brass miscellaneous copper, including a processing flow: sorting Pretreatment - feed melting - smelting - refining, tapping and ingot casting. Brass raw materials are sorted and pretreated to obtain brass alloys, which are put into a smelting furnace for melting. After the raw materials are completely melted, additives and slag accumulators are added. The decline was as high as 90%. Add additives to the brass melt, the additive reacts with manganese to form an alloy compound with a lighter density than the brass melt; adding a slag-accumulating agent can disperse around the compound, and slag-accumulate the compound, and at the same time due to the fluorine element The introduction can reduce the viscosity of the slag, help the compound slag to float up, ensure the sufficient accumulation and removal of the compound slag, and finally obtain a brass alloy with higher purity.

Description

Technical field [0001] The present invention relates to the field of melt purification techniques of copper smelting process, and more particularly to a method of reducing impurity element manganese in waste yellow copper. Background technique [0002] With the rapid development of the world's economy, in the context of industrialization, marketization and economic globalization, the more and more importance of mineral resources change. As the country with the largest consumption of copper resources in the world, the amount of mineral storage is very low, and China's copper resources have high dependence, the contradiction between raw materials supply and consumption is increasingly prominent, and solving the supply of copper raw materials. The problem is unfortunate. [0003] As the process of urbanization Waste copper is a lower energy consumption of raw materials, and there is less emissions of pollutants, which can effectively promote energy conservation and emission reductio...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C1/06C22C9/04
CPCC22C1/06C22C9/04
Inventor 宋卡迪宋长洪汤亚钢杨东超李志国宋程程
Owner NINGBO CHANGZHEN COPPER CO LTD