What is Carbon Black
Carbon black is a form of paracrystalline carbon with high surface area to volume ratio comparing to general carbon value but not higher than activated carbon. Carbon black C.A.S. No. is 1333-86-4 and it is an elemental carbon in the form of colloidal particles produced through incomplete combustion or thermal decomposition of gaseous or liquid hydrocarbons, coal, coal tar and vegetable matter.
Carbon Black Production Methods:
Furnace Black method
Furnace Black Method is considered the most common method for production of carbon black. This method is continuous and uses liquid hydrocarbon as base material. Raw materials are sprayed in liquid form into a heat source creating carbon black by combusting natural gas and heated air. Afterwards it is passed through a heat exchanger for cooling.
Channel Black
In this method, oil is used as a raw material instead of natural gas. The oil is heated in a vaporizer and the resulting vapors are channelized by a hydrogen-rich gas into a gas tube. The flames are cooled on the surface of a cylindrical container filled with water. Part of the produced carbon black is moved on the roller, while the remains enters the filter system. Finally, the two carbon black streams are combined together. The continuation of the process from this point on is similar to the furnace process.
Thermal Black
This method of producing carbon black is a non-continuous nor cyclic process that uses natural gas or higher grade hydrocarbon oils as the most common feedstock. In this case, two reactors operate alternately in cycles of 5 to 8 minutes. One of them is heated with natural gas or mixture of oil and air while the other is fed with pure feedstock which is thermally altered. Simultaneous. Carbon black is formed from a relatively slow thermal black process, resulting the size of the primary coarse particles is from 300 to 500 nm – medium thermal.
Acetylene Black
At high temperatures, the exothermic decomposition of acetylene produces carbon and hydrogen, forming the basis of the acetylene black process. Hydrocarbons are usually added to acetylene to prevent the reactor temperature from rising due to the exothermic reaction. When the reaction mixture is cooled, the carbon black separates from the hydrogen. Although the primary particle size of acetylene black is within the same range as furnace blacks (30 to 40 nm), its physical structure is noticeably deviated from the spherical shape.
Application:
Industrial carbon black is used in multiple industries according to its different properties such as chemical composition, colouring properties, particle size and colloidal properties. Carbon Black increases protection against ultraviolet rays in plastics products and It is a good conductor in thermoplastic polymers while it is used as a filler in rubber and improves parameters such as erosion, abrasion, scratching and breakage. The most common use of carbon black after the rubber industry, is ink industry, especially for newspaper printing.
Iranian supply of carbon black is vast and in different grades. The possible grades available from Iran are as below:
| Grade | Application |
|---|---|
| N-220 | Riding tires |
| N-234 | Elastomers and SBR/SR blends |
| N-326 | Rubber resistance is used in mechanical devices, the main body of tires, belts and belts, and in road vehicle tires. |
| N-330 | On the sides of tires, carcass compounds, coated compounds and tire belts |
| N-339 | It is possible to make the middle layer of the tire |
| N-375 | To make the middle layers of the tire |
| N-550 | In the manufacture of tire molds and inner skeletons, wall compounds, pipes and hoses |
| N-660 | To make the inner layers and the outer wall of the tire, cable cover, sealing rims, etc. |
| N-772 | It is used in propeller belts, airplane tires, used in pressure-sensitive parts. |
Available Packaging:
Bulk jumbo packing-Double valve, PP-PE (850-1100 kg)
Packing in double layer Kraft Paper-PE envelopes (20-25 kg)
Custom Branded Packages are available upon request.
