The amount of medium-temperature coal pitch added to carbon products
As a common coal asphalt material, medium-temperature coal asphalt has been widely used in carbon products. The addition amount of medium-temperature coal asphalt has an important impact on the performance and quality of carbon products. This article will conduct a detailed analysis and analysis of the amount of medium-temperature coal asphalt added to carbon products.
1. Introduction to medium-temperature coal asphalt.
Medium-temperature coal asphalt is a kind of asphalt material obtained by distillation of coal tar at medium temperature, which has good cohesiveness and stability. Compared with high-temperature coal asphalt, medium-temperature coal asphalt has a lower softening point and less viscosity, so it has been widely used in carbon products.
Second, the role of medium-temperature coal asphalt in carbon products.
Medium-temperature coal asphalt mainly plays the role of binder and filler in carbon products. By adding an appropriate amount of medium-temperature coal asphalt, the strength, hardness and corrosion resistance of carbon products can be effectively improved. At the same time, medium-temperature coal asphalt can also improve the oxidation resistance and heat resistance of carbon products.
3. The amount of medium-temperature coal asphalt added to carbon products.
1.The principle of determining the amount to be added.
The following principles should be considered when determining the amount of medium temperature coal pitch added:
1) According to the technical requirements and uses of the products, select the appropriate medium temperature coal asphalt varieties and addition amounts;
2) On the premise of ensuring the performance of the product, the addition of medium temperature coal asphalt should be minimized to reduce the production cost;
3) According to the actual situation of the production process and equipment, reasonably determine the addition amount of medium temperature coal asphalt to ensure the stability and safety of production.
2.The amount of medium-temperature coal asphalt added to common carbon products.
1) Graphite electrode: In the production of medium-temperature graphite electrode, the addition amount of medium-temperature coal pitch is usually between 10%-20%. According to the specifications and uses of the electrode, selecting the appropriate medium temperature coal pitch variety and addition amount can improve the strength, hardness and corrosion resistance of the electrode.
2) Carbon brick: Carbon brick is a common refractory material, and an appropriate amount of medium-temperature coal pitch needs to be added in its production process. According to the technical requirements and uses of carbon bricks, the addition amount of medium-temperature coal pitch is usually between 5%-15%. Through reasonable ratio and processing technology, the strength, hardness and heat resistance of carbon bricks can be improved.
3) Activated carbon: Activated carbon is a carbon material with a high specific surface area, and an appropriate amount of medium-temperature coal pitch needs to be used in its production process. According to the use and technical requirements of activated carbon, the addition amount of medium-temperature coal bitumen is usually between 1% and 5%. Through reasonable formulation and processing technology, the specific surface area, adsorption performance and strength of activated carbon can be improved.
IV. Conclusions. As a common coal asphalt material, medium-temperature coal asphalt has been widely used in carbon products. Through the reasonable selection of dosage, the performance and quality of carbon products can be improved, and the production cost can be reduced. In the actual production process, the appropriate medium-temperature coal asphalt varieties and addition amounts should be selected according to the technical requirements, uses, production processes and actual conditions of the equipment to ensure the stability and safety of production.