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Recovery treatment process of brass slag

A treatment process and recycling technology, applied in the direction of improving process efficiency, etc., can solve problems such as low grade of brass ingots, affect the quality of electroplating, equipment accidents, etc., and achieve the effects of improving recycling value, long service life and high productivity

Inactive Publication Date: 2012-10-03
FUJIAN CHANGLE HUATUO HARDWARE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If you make electrical parts, it will generate heat in the alternating current magnetic field, causing equipment accidents
If it is made into a conductive rod, the resistance is greater than that of pure brass, which will affect the use
Hard spots are easy to appear during polishing, which affects the quality of subsequent electroplating
Traditional treatment methods cannot remove iron, so the recovered brass ingots are of low grade and can only be used as miscellaneous copper

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Leaded brass (ZHPb59-1) slag regeneration treatment cast sand casting products

[0034] The leaded brass slag after crushing, sieving, magnetic separation, water washing and drying is put into a cored power frequency induction furnace with a melting rate of 300kg / h to rapidly melt into brass liquid.

[0035] After the brass is liquefied and cleared, the temperature is first raised to boiling, then iron remover and slagging agent are added, slag is removed and iron impurities are removed twice, and 0.03% phosphorus (added in the form of a copper-phosphorus master alloy containing 14% phosphorus) is added to the copper. The brass liquid is deoxidized. After fully stirring, remove the slag again, cover it with a covering agent, raise the temperature again until the brass liquid boils, and then turn off the power and let it stand for 5 minutes.

[0036] Then add 0.05% of cerium-containing refiner to the brass liquid to refine the brass liquid.

[0037] Sampling in front o...

Embodiment 2

[0039] Micro-leaded brass slag (containing Cu 58-60%, Pb ≤ 0.1%) regenerated gravity casting plumbing polished parts

[0040] Put the micro-lead brass slag after crushing, sieving, magnetic separation, water washing and drying into a cored power frequency induction furnace with a melting rate of 300kg / h to rapidly smelt the brass liquid.

[0041] After the brass is liquefied and cleared, the temperature is first raised to boiling, then iron remover and slagging agent are added, slag is removed and iron impurities are removed twice, and 0.03% phosphorus (added in the form of a copper-phosphorus master alloy containing 14% phosphorus) is added to the copper. The brass liquid is deoxidized. After fully stirring, remove the slag again, cover it with a covering agent, raise the temperature again until the brass liquid boils, and then turn off the power and let it stand for 5 minutes.

[0042] Then add 0.05% of cerium-containing refiner to the brass liquid to refine the brass liqui...

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Abstract

The invention provides a recovery treatment process of brass slag, which comprises the steps of: pretreatment, smelting treatment and refining treatment, and specifically comprises the steps of: firstly carrying out crushing, magnetic separation, water washing and baking pretreatment on the brass slag; then smelting in a channel-type induction furnace, slagging and de-ironing; and finally carrying out deoxidation, high temperature and refinement refining treatment on the molten brass. According to the recovery treatment process of brass slag provided by the invention, the quality of recovered brass ingot is improved, the production cost is lowered, metal burning loss and fume emission in the treatment process are reduced, and energy saving and emission reducing effects are achieved.

Description

【Technical field】 [0001] The invention relates to a process for recovering and treating brass slag. 【Background technique】 [0002] In recent years, my country's national economy has maintained a momentum of rapid growth, in which the consumption growth of non-ferrous metals is twice the growth of the country's GDP value, and my country has become the world's largest copper consumer. Due to the lack of copper resources in my country and long-term dependence on imports, the serious shortage of copper raw materials has become a bottleneck in the development of my country's copper industry, and the development and utilization of secondary copper resources has become an urgent problem to be solved. [0003] The recycling of brass slag is in line with my country's "circular economy development" strategy, and has significant economic and social benefits for the sustainable development of the social economy. Brass slag generally contains 35-45% copper, 10-20% zinc, and a large amo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22B15/00C22B7/04
CPCY02P10/20
Inventor 陈国栋陈发展姜永亮
Owner FUJIAN CHANGLE HUATUO HARDWARE
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