Recovered carbon black is produced by pyrolyzing waste rubber materials, such as tyres, in the absence of oxygen. This process breaks down the rubber into valuable byproducts, including carbon black, oil, and gas. Unlike carbon black, which is produced through fossil fuel combustion, rCB is considered more environmentally friendly due to its sustainable sourcing. The final carbon black obtained from the pyrolysis process can be further processed to meet specific quality standards, depending on its intended application.
Recovered carbon black is used in various industries, including rubber manufacturing, plastics, paints, coatings, and even as a filler material. To meet the strict demands of these applications, the carbon black must undergo further grinding and refinement to achieve the desired particle size and uniformity.
The applications of recovered carbon black span across multiple industries:
To ensure optimal performance in these applications, the recovered carbon black must be finely ground to specific sizes, depending on the target use.
1. Improving Particle Fineness and Uniformity
Pyrolysis carbon black, produced during tire pyrolysis, typically has larger and irregularly shaped particles. Grinding can refine it to a uniform particle size, enhancing its dispersibility and performance in various applications. For example, in industries like rubber, plastics, and paints, ground carbon black can mix better with the matrix material, improving the mechanical properties and surface quality of the final product.
2. Increasing Surface Area and Enhancing Activity
Grinding can increase the specific surface area of carbon black, thereby boosting its activity in specific applications. For instance, ground carbon black can provide better electrical performance and chemical reactivity in fields such as battery electrodes and conductive materials.
3. Enhancing Dispersibility
Untreated pyrolysis carbon black tends to agglomerate, which affects its dispersion in the matrix. Grinding breaks down these agglomerates, allowing for more even dispersion in materials such as inks, coatings, and rubber, thereby improving the performance of these materials.
4. Improving Physical Properties
Grinding optimizes the morphology of carbon black, which not only benefits its chemical and electrical properties but also enhances its physical characteristics. In the rubber industry, ground carbon black can increase the tensile strength, abrasion resistance, and aging resistance of rubber products.
5. Reducing Production Costs
Since pyrolysis carbon black is a byproduct of tire recycling, grinding it to make it commercially valuable can partially replace more expensive carbon black, thus reducing production costs. This is economically appealing to tire manufacturers and other industries requiring carbon black.
One of the most critical steps in the production of recovered carbon black is its grinding and processing to achieve the required fineness. For this purpose, we highly recommend our SCM Ultrafine Mill, a state-of-the-art grinding solution designed for ultrafine powder production.
By using our SCM Ultrafine Mill, manufacturers can ensure that the recovered carbon black meets the highest industry standards, with the required fineness for various applications. The mill’s advanced technology provides not only top-quality output but also enhances production efficiency and reduces operational costs.
SCM Ultrafine Grinding Mill is a new superfine powder (325-2500 mesh) production equipment developed through accumulating years of experience in grinding mill production, absorbing Swedish advanced machine manufacturing technology, and undergoing many years of tests and improvements. The SCM Ultrafine Grinding Mill is the result of combination of advanced Chinese and Swedish technologies. Meanwhile, it symbolizes the new development and new science in the grinding world.
