For the company Saar Gummi, we manufactured and delivered a line for recycling rubber seals with steel and aluminum. These seals are used in passenger cars.
The output from the line is rubber granulate up to 1 mm, steel, and aluminum.The line consists of three parts.
1. Coarse crushing – 4-shaft shredder 4SB and rectangular mill GH600/1200 130kW
In the first phase, the material intended for crushing is processed in a medium-sized low-speed 4-shaft crusher of the 4SB series. The shredder is used to crush robust materials that tend to arch in the inlet hopper. The resulting material will be crushed to a fraction of 100 mm. The material is then transported using a belt conveyor to the rectangular mill GH600/1200 with a power of 130kW. In this phase, rubber, steel, and optionally aluminum strips, glass fiber, and textiles will be separated. The dust generated during milling is removed using central pneumatic transport (central suction) through a system of filters and chambers into a prepared container for the mixture of dust particles. The mill is mounted on a steel support frame with walkways, and below the frame, there is a vibrating conveyor on spring dampers, into which ground pieces of 5 mm fraction fall, already free of dust.
2. Separation of metallic/non-metallic parts
The vibrating conveyor is used to break apart and disintegrate individual fractions and to evenly distribute the granulate (crushed material) for an ideal entry into the separation device. The granulate flows over a magnetic cylinder, on which magnetic particles adhere; these are then carried away by a belt conveyor and subsequently dropped into a metal dumping area. The remaining non-magnetic material is transported by a screw conveyor to the aluminum separator. The aluminum separator separates aluminum from rubber and has an additional smaller magnetic separator built in to capture any possible miniature pieces of metal. The ground rubber, cleaned of steel and aluminum particles, is transported by screw conveyors to a large storage container of 5m3 capacity.
3. Fine crushing – knife mills G400/600/5/3
At the bottom of the storage container, there is a screw conveyor that elevates the granulate from the container and the material is evenly distributed by a splitter (in the first stage into two, in the second stage (approximately within a year) up to four) specially modified knife mills G400/600, designed for fine grinding with an output fraction of up to 1mm. A pneumatic transport system is connected to the knife mills, which removes the ground material and transports it to big bags (large volume bags).
