Unlock instant, AI-driven research and patent intelligence for your innovation.

Brass scrap regeneration technology

A technology for processing technology and brass shavings, applied in the direction of improving process efficiency, etc., can solve the problems of poor casting performance, waste, and inability to be used in production

Active Publication Date: 2012-08-29
FUJIAN CHANGLE HUATUO HARDWARE
View PDF3 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Because brass shavings contain a lot of oil, water and impurities, they are often treated as scraps and sold at a low price in actual production, resulting in great waste
Due to the inability to control defects such as inclusions, hard spots, shrinkage cavities and shrinkage porosity in the traditional waste copper regeneration process, the performance of castings is poor, and it cannot be used to produce products with high performance requirements

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Brass scrap regeneration technology
  • Brass scrap regeneration technology

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0016] Example 1: Pouring sand casting products after regeneration treatment of leaded brass shavings (ZHPb59-1);

[0017] The pretreated leaded brass shavings material cake is dropped into a cored power frequency induction furnace with a melting rate of 300kg / h for rapid smelting, and 0.03% phosphorus is added after clearing (taking phosphorus as 14% copper-phosphorus master alloy Add) to deoxidize the brass liquid. After fully stirring, remove the slag and cover it with a covering agent, raise the temperature until the brass liquid boils, turn off the power and let it stand for about 5 minutes. Then add 0.05% refining agent accounting for the weight of the brass solution to refine the brass solution. Take a spectrum sample to detect the composition of the brass liquid, add an appropriate amount of zinc and aluminum, and pour the concentric three-helix fluidity sample, sand mold tensile sample and copper ingot after full stirring. The copper ingot was sliced, polished and e...

example 2

[0018] Example 2 Micro-leaded brass shavings (containing Cu 58-60%, Pb≤0.05%) after regeneration treatment, gravity casting plumbing and polishing parts.

[0019] Put the pretreated micro-lead brass shavings cake into a cored power frequency induction furnace with a melting rate of 300kg / h for rapid smelting, add 0.02% phosphorus (with phosphorus as 14% phosphorus-copper master alloy) Add) to deoxidize the brass liquid. After fully stirring, remove the slag and cover it with a covering agent, raise the temperature until the brass liquid boils, turn off the power and let it stand for about 5 minutes. Then add 0.04% refining agent accounting for the weight of the brass solution to refine the brass solution. Take the spectral sample to detect the composition of the brass liquid, add an appropriate amount of zinc and aluminum, and pour the metal type tensile sample and copper ingot after fully stirring. The copper ingot was sliced, polished and corroded with 10% ammonium persulf...

example 3

[0020] Example 3 Micro-leaded brass shavings (containing Cu 58-60%, Pb≤0.05%) after regeneration treatment, low-pressure casting plumbing and polishing parts.

[0021] Put the pretreated micro-lead brass shavings cake into a cored power frequency induction furnace with a melting rate of 300kg / h for rapid smelting, add 0.02% phosphorus (with phosphorus as 14% phosphorus-copper master alloy) Add) to deoxidize the brass liquid. After fully stirring, remove the slag and cover it with a covering agent, raise the temperature until the brass liquid boils, turn off the power and let it stand for about 5 minutes. Then add 0.04% refining agent accounting for the weight of the brass solution to refine the brass solution. Take the spectral sample to detect the composition of the brass liquid, add an appropriate amount of zinc and aluminum, and pour the metal type tensile sample and copper ingot after fully stirring. The copper ingot was sliced, polished and corroded with 10% ammonium pe...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
tensile strengthaaaaaaaaaa
tensile strengthaaaaaaaaaa
elongationaaaaaaaaaa
Login to View More

Abstract

The invention relates to brass scrap regeneration technology, and belongs to the field of non-ferrous metal material recycling. Aiming at the problems that brass craps contain a great amount of grease, moisture and impurities, oxide inclusions are easy to generate in smelting, and the like, the invention provides a regeneration method comprising pretreatment and refining, wherein the pretreatment comprises drying, magnetic separation and pressing blocks; and the refining comprises deoxidization, and high temperature and refining treatment. The technology is characterized in that: an prepared brass ingot has good casting property, mechanical property and cutting property, and is suitable for sand casting, gravity casting and low pressure casting.

Description

technical field [0001] The invention belongs to the field of non-ferrous metal material recycling, in particular to a brass ingot suitable for sand casting, gravity casting and low-pressure casting prepared by using brass shavings. Background technique [0002] With the continuous and rapid development of the national economy and the improvement of people's living standards, my country has become the world's largest copper consumer. my country's copper resources are relatively scarce, relying on imports for a long time, and the international copper price has remained high. The development and utilization of secondary copper resources has become an urgent problem to be solved. The recycling of brass shavings 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. Because brass shavings contain a lot of oil, water and impurities, they are often treated as scra...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): C22B7/00C22C1/02C22C1/06
CPCY02P10/20
Inventor 陈国栋陈发展姜永亮
Owner FUJIAN CHANGLE HUATUO HARDWARE