waste rubber pyrolysis equipment Introduction of waste tire at room temperature
Introduction of waste tire at room temperature
Waste rubber at room temperature pulverization method is generally divided into the following four stages: the processing of waste tires; plastic pieces of coarse crushed; colloidal particles; powder coating packaging.
(1) waste rubber (waste tires) processing
Waste tires contain non-rubber components such as fibers and metals, and the volume of used tires is relatively large, which is not only detrimental to the grinding process, but also affect the quality of the powder. So before the crushing of used rubber, generally have to pretreatment, mainly including the following two aspects.
① removal of non-rubber components on the disposal of waste tires, first wash off the tire above the debris; followed by the removal of the bead, remove the bead is now generally use the rotating bead machine to remove the bead, the method is to turn fixed tire , The knife will be cut off the knife, this method used in large tires. One of the main equipment is cutting machine.
② the treated tire cut into 50mm × 50mm of the plastic block in the cutting process, the main use of equipment for the cutting machine and cutting machine. The tire is removed from the sidewall to the tire side of the tire into the cutting machine was cut into strips, and the width of the bar adjustable, generally adjusted to 50mm. Then cut the cutting of the tire into the cutting machine, cut into 50mm × 50mm block.
(2) (waste rubber) plastic pieces of coarse crushing
Waste rubber coarse crushing process is 50mm × 50mm plastic block further crushed, crushed to the particle size of 20mm of the particles, did not meet the requirements of the particles back to re-crush. So when the design of coarse crusher to pay attention to the crusher crushing ratio i1. After the coarse crushed granules are fed into the crusher, the steel wires and fibers contained in the colloidal particles are treated, and the magnetic separator and the fiber separator are generally used.
(3) (waste rubber) colloidal particles
The crushing process of the waste rubber is similar to that of the coarse crushing, and after the process of crushing, magnetic separation and wind selection, the desired particle size is achieved and the return is not required to be re-crushed. The difference is that the waste rubber in the crushing process is sometimes smashed by the equipment needs to be cooled, the crushed roller with a groove, the finely divided roller is generally a smooth surface of the roller. This topic comes from the rubber asphalt production required for the powder, the required particle size is generally 30 to 40 mesh, so crushed crushed powder after the filter after the distribution of more than 70% should be 30 to 40 Between the average particle size is also 30 to 40 mesh, then we take the average particle size of 40 mesh. At the same time by the crusher before and after crushing the particle size of the powder can be crushed crushing ratio i2.
(4) powder coating classification and packaging
The choice of powder and fine powder is one of the crushing, often after the filter does not meet the requirements of the powder through the elevator to re-crush. Here, we will crush the powder into the vibration classification screen classification, according to the following five grades: 60 mesh below, 40 to 60 mesh, 30 to 40 mesh, 10 to 30 mesh and 10 mesh or more. Wherein the powder having a particle diameter of 10 mesh or more is subjected to wind removal to remove the contained fiber and then returned to the pulverization. And the particle size is less than 10 mesh powder, into the density separator, according to the different particle size of the different vibration and wind out of the role of fiber, and then through the magnetic separator and fiber separator after further processing to meet the requirements of the glue Powder products.