Recycling and Utilization of Waste Metals

Currently, the application scope of metal products is extremely wide, ranging from various daily necessities to steel used in the construction industry. However, during the use of metal products, a large amount of scrap metal is generated. If these scrap metals are not recycled, it will not only lead to serious waste of resources, but also cause pollution to the environment. Therefore, it is of great significance to carry out recycling and utilization of waste metals.

Recycling a discarded aluminum can can can save about 20% of capital and 80% of energy compared to manufacturing a new can. Recycling 1 ton of scrap steel can produce 0.9 tons of good steel, which is equivalent to saving 3 tons of ore and reducing costs by 47%. In addition, it can also reduce air pollution, water pollution, and solid waste. From this, it can be seen that the recycling and reuse of scrap metals can not only alleviate resource demand and protect the environment, but also have huge economic benefits.

What are the types of scrap metal?

Waste metals include phosphorus copper, red copper, white copper, purple copper, bronze, brass, enameled wire copper, copper shavings, aluminum, stainless steel, stainless iron, zinc alloy (slag), lead, industrial iron, gold-plated, silver plated products and other waste non-ferrous metals.

The harm of heavy metals to human body

From the perspective of environmental pollution, the main pollutants are heavy metals such as mercury, cadmium, lead, chromium, and arsenic, which have significant biological toxicity. Heavy metals cannot be biodegraded, and under the biomagnification of the food chain, they accumulate thousands or even hundreds of times and eventually enter the human body. In the human body, heavy metals can strongly interact with proteins and enzymes, causing them to lose their activity. They may also accumulate in certain organs of the body, leading to chronic poisoning.

From the perspective of environmental pollution, the main pollutants are heavy metals such as mercury, cadmium, lead, chromium, and arsenic, which have significant biological toxicity. Heavy metals cannot be biodegraded, and under the biomagnification of the food chain, they accumulate thousands or even hundreds of times and eventually enter the human body. In the human body, heavy metals can strongly interact with proteins and enzymes, causing them to lose their activity. They may also accumulate in certain organs of the body, leading to chronic poisoning.

How is scrap steel processed

Waste metals are mainly recovered and utilized through processes such as pyrometallurgical enrichment, wet dissolution, and microbial adsorption, which not only reduce the damage to the natural environment but also lower the cost of metal smelting.

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