Waste power plant slag treatment process

With the rapid development of urbanization, garbage disposal has become an increasingly serious problem. In order to solve this problem, garbage power plants have emerged. Garbage power plants convert the thermal energy generated by garbage combustion into electrical energy, and also produce a byproduct called slag. This article will introduce the treatment process of slag from garbage power plants, hoping to help everyone better understand the operation of garbage power plants.

1、 The generation and characteristics of slag

When a garbage power plant burns garbage, it generates a large amount of heat energy. These thermal energy are used to generate electricity, while also producing a large amount of slag. Furnace slag is a gray substance mainly composed of coal ash, waste slag, waste lime, etc. The main characteristics of slag are larger particles, higher hardness, certain porosity, and water absorption.

II. Treatment process of slag

1. Collection of slag

The first step in slag treatment of garbage power plants is the collection of slag. During the combustion process, the slag will be collected into the slag pool, and after a period of sedimentation, the slag will be transported to the slag treatment area.

2. Classification of slag

The slag treatment area will classify the slag. Generally speaking, slag can be divided into two types: heavy slag and light slag. Heavy slag refers to slag with larger particles and higher density, while light slag refers to slag with smaller particles and lower density. The purpose of classification is to better carry out subsequent processing.

3. Crushing of slag

After classification, the heavy slag will be transported to the slag crusher for crushing. The broken heavy slag will become finer, which is beneficial for subsequent treatment.

4. Screening of slag

The heavy slag after crushing at will be transported to the screening machine for screening. The purpose of screening is to separate slag particles of different sizes for subsequent treatment.

5. Magnetic separation of slag

After screening, the heavy slag will be transported to the magnetic separator for magnetic separation. The purpose of magnetic separation is to separate the iron material in it for recycling.

6. Water washing of slag

After magnetic separation, the heavy slag will be transported to a water washing machine for washing. The purpose of water washing is to remove impurities in it for recycling.

7. Recovery and utilization of slag

After the above treatment, the heavy slag can be recycled and utilized. Generally speaking, heavy slag can be used to make building materials, road materials, etc. Light slag can be used to make insulation materials, filling materials, etc.

3、 Summary

The treatment of slag from garbage power plants is an indispensable part of the operation process of garbage power plants. By collecting, classifying, crushing, screening, magnetic separation, water washing and other processing processes of slag, it is possible to turn slag into treasure and achieve resource recycling and utilization. I hope this article can help everyone better understand the operation of garbage power plants.