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Scrap copper aluminum-removal complexing agent and method for producing same

A technology of miscellaneous brass and compounding agent, which is applied in the field of copper alloy aluminum removal agent, can solve the problems of complex raw material composition, large fluctuation of elements, and restriction of regeneration of waste miscellaneous brass resources, so as to achieve light and fluffy slag, aluminum The effect of content reduction and easy operation

Active Publication Date: 2013-11-13
JINTIAN COPPER GROUP CORP NINGBO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, for waste miscellaneous brass, the composition of the raw materials is complex. During the batching process, elements such as aluminum and iron tend to fluctuate greatly, which leads to the strict control of the chemical elements such as aluminum and iron required by customers to exceed the standard, which greatly limits the waste. Regeneration of Miscellaneous Brass Resources

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Embodiment 1: waste miscellaneous brass aluminum removal composite agent, its batching weight percentage is composed of: 25% sodium borate, 25% copper oxide, 35% calcium carbonate, 5% sodium chloride, 10% cryolite.

[0030] Put the raw materials used into the stainless steel tank in the oven, dry at 270°C, keep warm for 4 hours, take them out and sieve them with 60 mesh ball mills, weigh all kinds of raw materials according to the composition of the ingredients, put them into the mixer, and stir them fully in the mixer , take out and air-cool before packaging.

[0031] When using, after the scrap brass is completely melted in the smelting furnace and slag is removed, the aluminum removal compound agent is evenly spread on the surface of the melt, and it is fully mixed in the entire melting furnace by manual stirring. After stirring for 20 minutes, it is removed and floated. slag.

[0032] For scrap brass with an aluminum content of 0.70%, the aluminum content is reduce...

Embodiment 2

[0033] Embodiment 2: waste miscellaneous brass aluminum removal composite agent, its batching weight percent is composed of: 25% boron oxide, 5% sodium borate, 25% cuprous oxide, 30% calcium carbonate, 7% sodium chloride and 8% ice crystal stone.

[0034] The ingredients used were put into stainless steel tanks in the oven respectively, the drying temperature was 250° C., and the temperature was kept for 5 hours. After taking them out, they were ball milled and sieved with 60 meshes. Weigh various raw materials according to the composition of the ingredients and put them into the blender, stir them fully in the blender, take them out and air-cool them for packaging.

[0035] When using, after the scrap brass is completely melted in the smelting furnace and slag is removed, the aluminum removal compound agent is evenly spread on the surface of the melt, and it is fully mixed in the entire melting furnace by manual stirring. After stirring for 20 minutes, it is removed and float...

Embodiment 3

[0037] Example 3: A composite agent for removing aluminum from waste miscellaneous brass. The weight percentage of the ingredients is as follows: 35% boron oxide, 25% copper oxide, 30% sodium carbonate, 5% sodium chloride and 5% cryolite.

[0038] Put the ingredients used into the stainless steel tank in the oven respectively, the drying temperature is 240°C, keep the temperature for 4.5 hours, take it out and carry out ball milling and sieving with 60 meshes. Weigh various raw materials according to the composition of the ingredients and put them into the blender, stir them fully in the blender, take them out and air-cool them for packaging.

[0039] When using, after the scrap brass is completely melted in the smelting furnace and slag is removed, the aluminum removal compound agent is evenly spread on the surface of the melt, and it is fully mixed in the entire melting furnace by manual stirring. After stirring for 20 minutes, it is removed and floated. slag.

[0040] For ...

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Abstract

A scrap copper aluminum-removal complexing agent comprises components which have the contents of: 20-40 wt % of borate or boracic oxide, 20-30 wt % of the oxide of copper, 30-40 wt % of carbonate, 5-10 wt % of sodium chloride and 5-10 wt % of cryolite, and the oxide of copper can be one or two of copper oxide or cuprous oxide; and the carbonate can be one or two of calcium carbonate or sodium carbonate. The use method of the scrap copper aluminum-removal complexing agent is that after scrap copper is completely molten in a smelting furnace and slagged off, the aluminum-removal complexing agent is uniformly sprayed onto the melt surface, the aluminum-removal complexing agent and the melt are fully mixed in the whole smelting furnace through manual stirring, and floating slag is fished. The furnace slag which is produced by utilizing the aluminum-removal complexing agent is light and puffy, the operation is easy, the copper content of the furnace slag is below 10%, and the aluminum content in regenerated copper is obviously reduced. Both the preparation and use of the complexing agent are in accordance with the environment-friendly requirement, and the complexing agent is safe and reliable.

Description

technical field [0001] The invention relates to a copper alloy aluminum removal agent, in particular to an aluminum removal compound agent for waste brass and a manufacturing method thereof. Background technique [0002] China is a big copper consuming country. With the continuous and rapid development of our national economy, our country's copper resources are relatively scarce, and the gap between copper demand and mine copper production is constantly expanding. It is estimated that China's refined copper consumption will reach 7.85 million tons in 2012, an increase of 6.4% over 2011, and the gap between domestic production and consumption will remain at around 2.1 million tons. The effective way to solve this contradiction is to make rational use of recycled copper resources. The recycling of scrap copper has many advantages such as low energy consumption, low production cost, good environmental conditions and slowing down the consumption of natural resources. Therefore,...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22B15/00C22B7/00
CPCY02P10/20
Inventor 张煜洪燮平王永如张学士巢国辉张翼邵德忠李密朱鹏飞
Owner JINTIAN COPPER GROUP CORP NINGBO