General Overview
Carbon Black is synthetic materials which essentially contain carbon (fine black powder of nearly pure elemental carbon) as the main element. It has been known as one of the most widely used carbon filters because of its predominant electrical property, low cost, and abundance. It is composed of spherical particles, a manufactured product that has been in commerce for over a century. Most CB used in the rubber industries contains 98% of elemental carbon, with oxygen (0.2% - 0.5%), sulfur (1% - 2%), and hydrogen (0,2% - 0,4%). Around 14 million tons of carbon black are currently produced worldwide and used as an important raw material in various industries.
What is Recovered Carbon Black?
Recovered Carbon Black (rCB) is a complex mixture consisting of carbonaceous deposits and oils absorbed during the pyrolysis process, together with various organic and inorganic additives. It is an eco-friendly substance that is extracted from the disposed tires during recycling. The growth of the recovered carbon black market is driven by the expansion of the rubber industry and rise in need for eco-friendly products, as the current feedstocks utilized in Carbon Black production are fossil fuel-based resources that are susceptible to volatile oil prices in addition to the associated high CO2 emission and also, Low price of rCB that is surging in demand for environmentally friendly and sustainable fillers in tire & non-tire application, and abundant availability of recyclable tires. This solution fits for those who want to participate in green solutions and it is economically and environmentally friendly -thus, it can save money and business time-.
Manufacturing Process
rCB is produced through Pyrolysis of End-Life Tires (ELT Pyrolysis), where the tire waste are decomposite
The inert atmosphere is generally maintained by injection of nitrogen in the system (hydrogen or steam may also be used). Using pyrolysis reactor, the feedstock (wasted tires) is heated at high temperatures (between 400◦C and 800 ◦C). where the tire waste are being decomposed and being heated at high temperatures (between 400◦C and 800 ◦C).
Rubber Industry
Carbon black is still a widely used filler in the rubber industries. The largest use of CB is a reinforcing agent in vehicle tires and rubber automotive products. Anti-vibrating parts in automotive are often made of natural rubber reinforced by carbon black.
Paint and Coating Industry
Carbon black is also an excellent coloring agent as a black pigment and therefore is widely used for printing inks, resin coloring, paints, and toners. Specialty Carbon blacks are used in paints and coatings for mass tone coloration, tinting of white and colored coatings, including decorative paints, and for transparent coloration.
Other Industries
Carbon black is used in various other applications as an electronic conductive agent, including antistatic films, fibers, and floppy disks. It is also used as an antistatic agent which has provided uses as an additive for fuel caps and pipes for automobiles. In addition, Carbon black is used as a food coloring and widely used in the treatment of drinking water, in odor control of industrial wastes, and in solvent recovery.
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