Interpretation of thermal carbon black

 Thermal cracking carbon black uses natural gas, coke oven gas or heavy liquid hydrocarbons as raw materials. In the absence of oxygen and flame, high temperature pyrolysis produces carbon black, which is called thermal cracking carbon black, also known as thermal cracking. black.
1. Production process of thermal cracking carbon black
The pyrolysis method uses natural gas, coke oven gas or heavy liquid hydrocarbons as raw materials and adopts a batch production process with two production furnaces as a group. The production process and the heating process are alternately performed in the production furnace, and continuous production can be performed. In the preheated reaction furnace, the air is isolated, and the method of intermittent (two stages of combustion heat storage and thermal decomposition) or continuous (single thermal decomposition) thermal cracking to generate carbon black is carried out. This carbon black produced by cracking is called thermal cracking carbon black.

2. Performance characteristics of thermal cracking carbon black
Pyrolytic carbon black is the type with the lowest specific surface area among carbon black varieties. It basically exists as a single spherical particle, does not fuse or coalesce into aggregates, and its surface oxygen content is also very small (0.1% -0.3%). The carbon black produced by the pyrolysis method has the characteristics of high purity, less hard carbon, low ash content and low sulfur content.
3. Use of thermal cracking carbon black
In addition to traditional uses, thermal cracking carbon black is opening up new applications. In addition to being used as a filler in the rubber industry, thermal cracking carbon black is also widely used in wires, cables, plastics, refractory materials, metallurgy, video tapes, etc industry. In the metallurgical industry, the production of chromium, solar silicon, titanium, vanadium, tantalum, and tungsten carbide all require pyrolytic carbon black. Black also has special properties, a particularly low structure, and a smooth surface, making it superior to natural gas semi-reinforced carbon black in terms of processability, fillability, resilience, and electrical resistance.
4. Classification of thermal black carbon black and range of specific surface area for nitrogen adsorption
There are three main types of thermal cracking carbon black: intermediate thermal cracking carbon black, non-polluting intermediate thermal cracking carbon black and fine thermal cracking carbon black. The nitrogen adsorption specific surface area of medium thermal cracking carbon black is 6-10㎡ / g, and the nitrogen adsorption specific surface area of fine thermal cracking carbon black is 10-15㎡ / g.