Coal asphalt knowledge sharing
1. Overview. Coal pitch, also known as coal tar pitch, is a substance that is extracted from coal tar. Coal asphalt has a wide range of applications in industry, especially in road construction, waterproofing materials, anti-corrosion coatings and other fields. However, due to its toxicity, extra care is required during use and handling.
2. Preparation of coal pitch.
The preparation of coal pitch is usually distilled from coal tar. Coal tar is a complex mixture that is heated and distilled to separate out a variety of compounds, the heaviest of which is coal pitch. The specific preparation process includes heating, distillation, cooling, and separation.
3. Types of coal pitch.
According to the different softening points, coal pitch can be divided into three types: hard coal asphalt, medium temperature coal asphalt and low temperature coal asphalt. The softening point of hard coal pitch is the highest, generally above 100; The softening point of medium-temperature coal pitch is between 40 -100; The softening point of low-temperature coal pitch is the lowest, generally below 40.
Fourth, the application of coal asphalt.
1.Road construction: Coal pitch can be used as a waterproofing material and adhesive in road construction. It has good durability and stability, which can effectively improve the service life of the road.
2.Waterproofing materials: Due to its good waterproofing properties, coal pitch is widely used to make waterproofing materials, such as roof waterproofing coatings and basement waterproofing coatings.
3.Anticorrosive coatings: Coal pitch is an excellent anticorrosive material that can be used to protect metals and other materials from corrosion.
4.Other applications: In addition to the above applications, coal pitch can also be used to produce other chemicals, such as phenol, acetone, etc.
5. Safety and environmental precautions.
1.Toxicity: Coal pitch has a certain toxicity, and long-term exposure may cause harm to the human body. Therefore, appropriate personal protective equipment such as chemical eyewear, chemical gloves and chemical protective clothing should be worn when using and handling coal pitch.
2.Fire hazard: Coal pitch is a combustible substance, so ignition sources and high temperatures should be avoided. When storing and handling coal pitch, all relevant safety regulations and operating procedures should be followed to prevent fires and other accidents.
3.Waste Disposal: Local environmental regulations and regulations should be adhered to when handling and disposing of coal asphalt waste. Waste should be stored, transported and disposed of in a prescribed manner to avoid adverse effects on the environment.
4.*Utilization: In order to reduce the impact on the environment and conserve resources, coal pitch should be used as much as possible. With proper handling and processing, it can be transformed into a useful product or material.
VI. Conclusions. As an important industrial raw material, coal asphalt has a wide range of applications in many fields. Understanding the basics, preparation methods, types, applications, and safety and environmental precautions of coal pitch will help you make better use of this substance, while also keeping your workers safe and protecting the environment. With the continuous progress of science and technology and the expansion of application fields, coal pitch will continue to play an important role in the future.