Non ferrous metal extraction from Incineration slag

Non ferrous metal extraction from Incineration slag

Garbage disposal has always been a challenge in urban management. With the acceleration of urbanization, the problem of garbage has become increasingly prominent, and traditional landfill and incineration methods also face many problems. Among them, incineration treatment generates a large amount of slag, and how to treat these slag has become an urgent problem to be solved. The extraction of non-ferrous metals is a sustainable solution.

1、 Principle of nonferrous metal extraction from Incineration slag

The nonferrous metals contained in Incineration slag mainly include copper, aluminum, zinc, etc. These non-ferrous metals will be oxidized during the incineration process, forming oxides that exist in the slag. The extraction of non-ferrous metals is achieved by reducing oxides into metal forms through chemical reactions.

2、 Operation steps of nonferrous metal extraction from Incineration slag

1. Slag pretreatment

Before extracting non-ferrous metals, it is necessary to pre-treat the slag. Firstly, the slag is crushed to ensure uniform particle size. Then, wash the slag to remove impurities and harmful substances.

2. Dissolution

Put the pre treated slag into the reaction kettle, add an appropriate amount of solvent, and dissolve it. The selection of solvents needs to be determined based on the type of non-ferrous metals contained in the slag.

3. Restore

Add a reducing agent to the slag solution to reduce the oxide into the form of a metal. The selection of reducing agents also needs to be determined based on the type of non-ferrous metals contained in the slag.

4. Separation

Separate the reduced metal from the solution to obtain pure non-ferrous metals.

3、 Advantages of nonferrous metal extraction from Incineration slag

1. Resource utilization

The nonferrous metals contained in Incineration slag are Renewable resource, which can be effectively utilized through extraction.

2. Environmental protection

Incineration treatment will generate a large amount of slag, and if not treated, it will cause serious pollution to the environment. The nonferrous metal extraction of Incineration slag can remove the harmful substances in the slag to achieve the effect of environmental protection.

3. Economic benefits

The extraction of nonferrous metals from Incineration slag can realize the utilization of resources and bring economic benefits. By extracting and recycling non-ferrous metals, waste can be turned into treasure, creating more economic value.

IV. Conclusion

Nonferrous metal extraction from Incineration slag is a sustainable waste treatment method, which can realize resource utilization and environmental protection. Although there are still some problems in this technology, such as extraction efficiency and cost, with the continuous development and improvement of the technology, it is believed that the non-ferrous metal extraction of Incineration slag will become more and more mature and become an important waste treatment method.

Non ferrous metal extraction from Incineration slag

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