What Do I Need to Know About Scrap Metal Recycling?

Scrap metal refers to metal fragments and crumbs discarded by the metallurgical industry and metal processing industry, as well as metal utensils used for equipment renewal, etc. It also includes metal objects such as metal packaging containers and waste vehicles recovered from municipal waste.

There are two sources of metal in industry: one is metal ore, and the other is scrap metal. The former are natural resources, and the latter are recycled renewable resources. If more waste metal and less metal ore are used in the industry, it will not only help to conserve metal mineral resources, but also help reduce the environmental emissions of waste metal, and play a role in improving the environment ^[2]

Most metals in the world can

After the general scrap metal is recycled, it contains a lot of renewable resources. Therefore, before the general scrap metal is melted and separated, the composition of the scrap metal is analyzed and tested.

Corresponding national standards for hardness testing of metal materials:

GB / T230. 1 2004 "Metal Rockwell Hardness Test Part 1: Test Method"

GB / T231. 1 2002 "Metal Brinell Hardness Test Part 1: Test Method"

GB / T4340. 1 1999 "Vickers hardness test for metals-Part 1: Test methods"

GB-1818-94 "Test method for Rockwell hardness of metal surfaces"

GB / T 17394-1998

Generally, the scrap metal of a country can be divided into the following types according to its source ^[4]

The new specific method of recycling waste metal and VC mixture is to send the waste metal mixed with vinyl chloride into a melting furnace at 800-900 degrees Celsius, and the vinyl chloride and metal react to generate metal chloride, carbon dioxide and water. Because chlorine completely reacts with metals, it does not produce the highly toxic dioxin.

Different metals can be used to recover metals by using the temperature difference during the gasification of different metal chlorides. The experimental results at the experimental furnace stage show that 97% of zinc and lead and 95% of iron can be recovered.