Slag utilization in Incineration power plant

Slag utilization in Incineration power plant

With the acceleration of urbanization and the continuous increase in the amount of garbage, how to deal with garbage has become an urgent problem to be solved. Incineration power plant has been widely used as a way to treat waste. In Incineration power plants, slag is an important product. If it can be reasonably used, it will have a positive impact on the environment and economy. This paper will introduce the slag utilization method of Incineration power plant.

1、 Definition and characteristics of slag

Slag is a kind of solid waste generated in Incineration power plant, which is a mixture of ash and slag generated when burning garbage. The slag is mainly composed of oxides, including silica, alumina, Calcium oxide, magnesium oxide, etc. The color of slag is generally gray or black, and it has a certain degree of toughness and strength, which can be used for manufacturing building materials, etc.

2、 Utilization method of slag

1. Manufacturing building materials

Slag can be used to manufacture building materials, such as bricks, blocks, road surfaces, etc. Slag can replace some cement, making building materials more environmentally friendly. At the same time, slag can also improve the strength and durability of building materials.

2. Production of cement

Slag can be used as a raw material for cement to produce high-performance cement. Slag contains a large amount of substances such as silica and alumina, which can improve the strength and durability of cement.

3. Manufacturing ceramics

slag can be used to manufacture ceramics, such as ceramic tiles, sanitary ware, etc. The oxides in the slag can improve the hardness and wear resistance of ceramics.

4. Production of steel

Slag can be used to produce steel. In the process of steel smelting, slag can absorb harmful substances such as sulfur and phosphorus, thereby reducing environmental pollution.

5. Waste landfill

If the slag cannot be utilized, it can be landfilled. When landfilling, it is important to note that the slag contains certain harmful substances, such as heavy metals, which need to be treated to avoid environmental pollution.

3、 Treatment method of slag

1. Grinding treatment

Grinding is the process of grinding furnace slag into powder, which is then used to manufacture building materials, cement, etc. Grinding treatment can improve the utilization rate of slag and reduce environmental pollution.

2. Acid washing treatment

Acid washing treatment involves soaking the slag in acid to remove harmful substances from it. Acid washing treatment can make slag more environmentally friendly and improve its utilization rate.

3. Heat treatment

Heat treatment is the process of heating furnace slag to a high temperature to turn it into a glassy substance. Heat treatment can improve the stability and durability of slag, making it more suitable for manufacturing building materials, etc.

4、 Conclusion

The slag of Incineration power plant is an important waste. If it can be reasonably used, it will have a positive impact on the environment and economy. Slag can be used to manufacture building materials, cement, ceramics, etc., as well as to produce steel. The treatment methods for slag include grinding, acid washing, heat treatment, etc. We should actively promote the utilization of slag, reduce environmental pollution, and achieve sustainable development.

Slag utilization in Incineration power plant

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