The Process of Manufacturing of Rubber Powder

Author:Suny Group

Manufacturing of rubber powder from used tyres is a three-stage processing primarily shredding, after that granulation and lastly fine grinding through which high-quality materials for recycling are ultimately produced.

Shredding: The very first step involved in the recycling of tyres is shredding. Shredding means separation of wire and mesh from tyre and breaking them into pieces. This can be obtained by a machine with moving parts in which used tyres are put and steel or iron made wires are separated out from the tyre after this tyre is torn to pieces.  The machine is very versatile which can also be used for shredding of all kinds of input materials and is well suited for different industries. The diameter of rotors ranges from 457 mm -850mm to 2000 mm width which are driven by either one or two oversized gearboxes. There is a well integrated hydraulic power pack into the machine housing which is used to save space and protect it from damage but is still easy to access or remove for maintenance. In this machine shredders are usually designed for a wide range of applications and which can also be used in industries such as in-house and general recycling, electronic waste and post consumer waste handling. Apart from the tyre waste input materials can be all types and forms of plastics such as lumps, pipes, film, bales, woven bags, electronic waste like cables and ICBs, paper, wood and other organic materials. In some cases where the raw material or waste is of small size, can be sent directly to the next step granulation.

Granulation: The granulators are used in the next step of this recycling process in which pieces of waste tyres are grinded in the large sized granulators to produce large quantity of granules. Granulators are developed as slow-running grinders for applications in the injection and blow molding sector.  The material which has to be granulated is fed via a sound-absorbing feed hopper which is available in a wide range to suit the application.  The slow-speed granulators which are designed of this range are commonly mounted on either low or high level base frames. With these numerous options, the slow speed granulators can be tailored to an extremely wide range of applications. P

Pulverizer: The last step involved in the production of rubber powder from tyre waste is to convert the granulated material into the fine powder. This is done by means of pulverizes. Pulverizes are high speed, precision grinders which are used for the processing of medium hard, impact resistant and friable materials. The granulated material is introduced through the centre of a vertically fixed grinding disc which is mounted concentrically with an identical high speed rotating disc to make the fine powder of it. Some typical applications are the pulverizing of plastic products, tube, edge trim materials, film waste. The waste generated from the food, chemical and pharmaceutical industry can also be pulverized in order to make the fine powder.  The material to be pulverized is. Inside the pulverizer the centrifugal force acts on the material to be pulverized and carries the material through the grinding area and the resulting powder is collected with a blower and cyclone system which is fine rubber powder or the other product of which waste material used.