Slag is a type of waste generated during the power generation process of power plants, usually referring to the remaining material after combustion in coal-fired boilers. The production of slag is very large, and if not treated and utilized, it will cause serious pollution to the environment. So, how can the slag from the power plant be utilized? This article will introduce you to several common methods of slag utilization.
1. Slag concrete
Slag concrete is a building material made by mixing materials such as slag and cement. Slag concrete has high strength and durability, while also effectively reducing the discharge of slag. The specific steps for making slag concrete are as follows:
Step 1: Pre treat the slag to remove impurities and harmful substances.
Step 2: Mix the pre treated slag with materials such as cement and sand in a certain proportion.
Step 3: Add an appropriate amount of water, mix evenly, and make concrete.
Step 4 of 
: Pour the concrete into the mold and take it out after it solidifies before use.
2. Slag bricks
Slag brick is a building material made from slag and other materials. Slag bricks have high strength and durability, as well as excellent insulation performance. The specific steps for making slag bricks are as follows:
Step 1: Pre treat the slag to remove impurities and harmful substances.
Step 2: Mix the pretreated slag with lime, cement and other materials in a certain proportion.
Step 3: Add an appropriate amount of water, stir evenly, and make bricks.
Step 4: Place the adobe in a well ventilated and dry place, and wait for it to completely dry before firing.
Step 5: Package and transport the fired bricks for use.
3. Slag landfill
Slag landfill is a treatment method of burying slag underground. Slag landfill can effectively reduce the discharge of slag, while also fixing the slag underground to avoid environmental pollution. The specific steps for slag landfill are as follows:
Step 1: Pre treat the slag to remove impurities and harmful substances.
Step 2: Transport the pre-treated slag to the landfill site.
Step 3: Excavate a landfill pit in the landfill site and pour the slag into the landfill pit.
Step 4: Compact the slag until the landfill pit is filled.
Step 5: Cover the surface of the landfill with a layer of soil to prevent slag from being exposed to the surface.
4. Slag recovery
Slag recycling is a treatment method that reuses slag. Slag recycling can effectively reduce the discharge of slag, while also converting the slag into useful materials. Common methods for slag recovery include:
(1) Slag crushing: Crushing furnace slag to produce slag powder, which is used as an additive for building materials such as concrete and cement.
(2) Slag grinding: Grind the slag to produce fine powder, which is used to manufacture materials such as glass and ceramics.
(3) Slag melting: Melting furnace slag to produce materials such as glass and ceramics.
Summary:
The slag from power plants is a very important waste, and if not treated and utilized, it will cause serious pollution to the environment. This article introduces several common methods of slag utilization, including slag concrete, slag bricks, slag landfill, and slag recovery. These methods can not only effectively reduce the discharge of slag, but also convert slag into useful materials, making contributions to the environmental protection industry.
