"End-of-life Tyre Recycling"
"Tyres bath, car tyres"
[ "What is end-of-life for tyres and tyre recycling;The recycling of tyresalso known as the cycling of rubber is a way to reuse the tyres that haveundergone wear, tear or damage that are irreparable. Used tyres cause problemsas they are nothing but solid waste. They are present in large volumes, arenon-biodegradable and are composed of components that are dangerous for theenvironment. They also are a source of mosquitoes and rodents that causediseasesThe process ofrecycling;1. Collecting used orworn-out tyresUsed;tyresbath;might be accumulated by individuals or companies who are into thebusiness of tyre recycling. Once collected, they are transferred to the recyclingplants to carry out their processing. The tyres might be reused as mulch or forstrength training2. Processing of thewhole tyreAt first, the tyresare broken down and cut into small pieces. This process is carried out toreduce their volume to be able to handle them easily. Tyre shredders help incarrying out this procedure using shafts that counter-rotate. ;The systems involved inthe processing of tyres:; Mechanical systemsIn this case,used;car tyres;are grinded into small pieces with the help ofa mechanical system ;Cryogenic systemsThe tyres, in thiscase, are frozen at low temperatures to make them break down into small chipsof different sizes. These shreds are then cooled with liquid nitrogen. Now thatthe rubber becomes brittle, it passes through a hammer mill to further breakthe rubber into tiny particles. The steel components are removed with the helpof magnets and fibres and air classifiers. The recycled rubber is thus ready tobe used for other purposes3. Steel LiberationStageThe shreds of tyresprocured from the first step are further processed and made ready to undergothe process of separation of the wire from the rubber. This is known as coursescreening and fibre separation. The steel wires present in tyres providestrength, resilience and versatility to the tyres. These wires are taken out,reused and supplied to the rolling mills to produce new steel. The rest of therubber is utilised in more ways than one4. Screening andMilling StageThis process involvescareful screening to check that no wires or any other kind of unwantedsubstances in the different sizes of rubbers is present in the mix. Extra-largepieces of rubber and unwanted pieces of rubber are removed5. Cleaning StageThe rubber obtainedfrom the above processes is packed and transported to various factories whichutilise rubber as raw material, like shoe manufacturers etcMultiple products arederived from a used set of tyres.- Are burnt for fuel- Construction materials: Houses can be built by worn-out rubber bymixing them with concrete. They are used in applications of civil engineeringlike subgrade fill. They help in the reduction of the collision, wave action,blasting mats and rainwater run-off as barriers between roadways andresidences.- Apparel Products: They can be used inproducing sandals.- Application in civil engineering: They are utilised as landfill gastrench collection walls or backfills for the repair of a landslide along theroad or vibration minimising material for railway lines.-;Ground andCrumb Rubber: They are used to paveprojects or moulded in products like rubber flooring, padding of the carpet,sidewalks, bumpers of docks etc.-Carbon source: They are used as a fuel source in steelmills. This enables the mills to be eco-friendlyTyres are produced anddiscarded in high volumes every year. However, they could pose to be a threatto the environment and the surroundings due to their heavy metal content. Theyalso tend to leach toxins in the groundwater causing lots of issues. Dumped tyreshave been known to become home to animals and insects causing health problemsfor humans. Hence, it becomes crucial to have these used or discarded tyresrecycled to prevent any solid waste deposition, releasing toxins in the air.This prevents any health problems and promotes a healthy environment." ]