With the acceleration of urbanization, the production of household waste is also constantly increasing. In the process of treating household waste, the recycling and utilization of slag and metals has become a hot topic. This article will introduce the recycling and utilization methods of slag and metals in household waste, helping readers better handle household waste and protect the environment.
1、 Slag in household waste
Slag refers to the solid waste generated due to incomplete combustion in the process of domestic Incineration. The slag contains a lot of inorganic substances, such as iron oxide, aluminum oxide, Calcium oxide, etc. These inorganic substances can be recycled and utilized to reduce environmental pollution.
1. Recovery and utilization methods of slag
(1) Production of cement: alumina, Calcium oxide and other inorganic substances in the slag can be used to produce cement. By mixing slag with raw materials such as limestone and bauxite and firing them, high-quality cement can be obtained.
(2) Making roadbed materials: Slag can be used to make roadbed materials. After mixing slag with sand, stones, etc., high-strength roadbed materials can be obtained.
(3) Making building materials: Slag can be used to make building materials. After mixing slag with raw materials such as cement and lime, high-strength building materials can be obtained.
2. Treatment method of slag
(1) Landfill: The slag can be buried in a landfill. When landfilling, attention should be paid to the stability and sealing of the slag to prevent pollution to the environment.
(2) Incineration: Furnace slag can be incinerated into ash. Ash can be used to make cement, roadbed materials, etc.
2、 Metals in household waste
The metals in household waste include iron, aluminum, copper, etc. These metals can be recycled to reduce environmental pollution.
1. Metal recycling methods
(1) Magnetic separation method: Use a magnet to separate iron products from household waste.
(2) Air flotation method: Use airflow to separate aluminum products from household waste.
(3) Gravity separation method: Use gravity to separate copper products from household waste.
2. Metal treatment methods
(1) Recycling: The recycled metal can be processed to produce new metal products.
(2) Landfill: Unrecycled metals can be buried in landfills. When landfilling, attention should be paid to the stability and sealing of the metal to prevent pollution to the environment.
(3) Incineration: Unrecycled metals can be incinerated into ash. Ash can be used to make cement, roadbed materials, etc.
epilogue
The recycling and utilization of slag and metals in household waste can reduce environmental pollution and protect the environment. When dealing with household waste, we should pay attention to sorting and recycling recyclable items. At the same time, the government should also strengthen the management and treatment of household waste, and promote the resource utilization of household waste.
