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Iron removal refining agent for preparation of free-cutting brass through melting of scrap brass

The technology of refining agent and miscellaneous brass is applied in the field of iron-removing refining agent for preparing free-cutting brass by smelting waste miscellaneous brass. Add and use convenient effects

Active Publication Date: 2014-12-31
NINGBO CHANGZHEN COPPER CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the above-mentioned refining agents are not aimed at scrap brass, and the refining effect on scrap brass is not obvious

Method used

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  • Iron removal refining agent for preparation of free-cutting brass through melting of scrap brass

Examples

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Effect test

Embodiment 1

[0024] An iron-removing smelting agent for preparing free-cutting brass by smelting waste miscellaneous brass, the iron-removing smelting agent is made by mixing the following components by mass percentage: CuZr master alloy powder (Zr content is 70% by mass) 20%, CuTi master alloy powder (20% by mass of Ti) 15%, CuP master alloy powder (10% by mass of P) 25%, sodium carbonate 5%, potassium sulfate 35%.

[0025] According to the above ratio, the CuZr master alloy powder (fineness 20 mesh to 100 mesh), CuTi master alloy powder (fineness 20 mesh to 100 mesh), CuP master alloy powder (fineness 20 mesh to 100 mesh), sodium carbonate And potassium sulphate are mixed uniformly, put into an electric furnace and heated to 200°C for 3 hours, and finally coated with copper foil to form a block.

Embodiment 2

[0027] An iron-removing refining agent for preparing free-cutting brass by smelting waste miscellaneous brass, said iron-removing refining agent is made by mixing the following components by mass percentage: CuZr master alloy powder (Zr content is 20% by mass) 40%, CuTi master alloy powder (70% by mass of Ti) 5%, CuP master alloy powder (20% by mass of P) 15%, sodium carbonate 15%, potassium sulfate 25%.

[0028] According to the above ratio, the CuZr master alloy powder (fineness 20 mesh to 100 mesh), CuTi master alloy powder (fineness 20 mesh to 100 mesh), CuP master alloy powder (fineness 20 mesh to 100 mesh), sodium carbonate Mix it with potassium sulfate and heat it to 350°C for 2 hours in an electric furnace, and finally wrap it with a copper tube to form a block.

Embodiment 3

[0030] An iron removing refining agent for preparing free-cutting brass by smelting waste miscellaneous brass. The iron removing refining agent is made by mixing the following components by mass percentage: CuZr master alloy powder (the content of Zr is 30% by mass) 40%, CuTi master alloy powder (50% by mass of Ti) 10%, CuP master alloy powder (15% by mass of P) 20%, sodium carbonate 10%, potassium sulfate 20%.

[0031] According to the above ratio, the CuZr master alloy powder (fineness 20 mesh to 100 mesh), CuTi master alloy powder (fineness 20 mesh to 100 mesh), CuP master alloy powder (fineness 20 mesh to 100 mesh), sodium carbonate Mix it with potassium sulfate and heat it to 300°C for 2.5 hours in an electric furnace, and finally wrap it with copper foil or copper tube to form a block.

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Abstract

The invention discloses an iron removal refining agent for preparation of free-cutting brass through melting of scrap brass. The iron removal refining agent is prepared by mixing the following components by weight: 20-40% of a CuZr intermediate alloy powder, 5-15% of a CuTi intermediate alloy powder, 15-25% of a CuP intermediate alloy powder, 5-15% of sodium carbonate, and 20-35% of potassium sulfate. The invention can effectively reduce the impurity element Fe in scrap brass, inhibit the influences of Fe element on the plasticity and cutting properties of the free-cutting brass product, and remove oxide slag laden in the melt and improve the quality of the free-cutting brass product.

Description

Technical field [0001] The invention relates to the technical field of non-ferrous metal processing, in particular to an iron removing refining agent for preparing free-cutting brass by smelting waste brass. Background technique [0002] China is the world's largest copper consumer and the largest producer of refined copper. With the continuous expansion of domestic refined copper production and consumption, the supply of copper raw materials has become a bottleneck restricting the development of China's copper industry. Due to the good regeneration performance of copper, compared with primary copper, scrap copper has the advantages of energy saving, environmental protection and economy as a copper raw material. Therefore, scrap copper has become an important source of raw materials for the copper industry. The direct utilization of waste miscellaneous brass in my country is: the use of large-tonnage electric furnace smelting-submerged liquid transfer-multi-stream multi-head hori...

Claims

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Application Information

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IPC IPC(8): C22C1/06C22C9/04
Inventor 宋长洪郭淑梅王硕符志祥刘关强李华清向朝建朱莎霜杨东超
Owner NINGBO CHANGZHEN COPPER CO LTD
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