Roller carbon black and gas-mixed carbon black are both gasified by fully mixing liquid hydrocarbons and gas, and then ejected through small holes to cause incomplete combustion and generate carbon black. However, there are still some differences between roller carbon black and gas-mixed carbon black. This article first introduces roller carbon black to you, and then explains the difference between roller carbon black and gas-mixed carbon black.
Roller Carbon Black Introduction
Roller carbon black production process
Roller carbon black adopts combustion cracking method. That is to say, anti-corrosion oil and anthracene oil are used as raw materials, mixed with preheated gas after gasification, sprayed out through small holes, and incompletely burned and cracked in contact with air in the fire room, part of the carbon black is collected on the surface of the drum, and the other part is Carbon black is obtained by cooling, collecting, granulating and sieving in the residual gas.
Roller carbon black index range
Due to the limitations of the roller carbon black, the index range of the carbon black it produces is limited, and the approximate index range of the roller carbon black is: the average particle size is 32-39nm. The specific surface area is 75-909m2/g. The oxygen content is 3.48-4.08%. The hydrogen content is 0.85-1.15%. The true density is about 1.8g/cm3.
Physical Properties of Roller Black
Pure black fine grain or powder, relative density 1.8～2.1g/cm3, insoluble in water, acid and alkali, can burn in air. Its main component is elemental carbon, and also contains small amounts of hydrogen, oxygen, sulfur and ash.
Roller carbon black application
As a filler, it is mixed into natural rubber and various synthetic rubbers, so it can be used in the manufacture of rubber products such as tread rubber, conveyor belts and adhesive tapes. In addition, it is also widely used in the production of inks and coatings.
What is the difference between roller carbon black and gas-mixed carbon black?
When comparing the production process of roller carbon black and gas-mixed carbon black, we found that they are not much different, but the collection methods of roller carbon black and gas-mixed carbon black are different. Gas-mixed carbon black is all processed Cooling is collected, while part of the roller carbon black is collected on the surface of the roller, and the other part is collected by cooling. This is the difference between tumbler black and aerated carbon black.