Used Tyre Recycling Plant for Sale
The tire is a unique material that facilitates everyone’s life. But despite its many valuable application to make our life faster, tire creates various pollution during different stages of its life cycle. It has durable, non-compostable, and resilient properties which make tires difficult to recycle. A large amount of non-biodegradable scrap tires tires causes critical environmental impacts, particularly by occupying a large landfill area. It is also dangerous for human health because of styrene, which is a strong toxic chemical.
Recycling strategy of scrap tire
Recycling used tire is an environmental concern as it takes around 80-90 years to degrade naturally. So it has a long life in the environment. To alleviate the environmental impacts of endof-life tires, reusing, retreading, regeneration, co-processing and pyrolysis are the most common practice.
Reuse
Reusing is finding a new alternative to adopt usable tires for other applications. It can be used as a whole or cut into smaller pieces. This procedure creates an opportunity to produce other valuable materials. It presents a new strategy to cope with environmental issues associated with used tires. The tire can be used in roadside barriers, parks and playgrounds, structures, channels, artificial reefs, and biogas drainage.
Reforming
Reforming is an essential process for used tire reclamation since it comes up with savings in raw resources and gets rid of the difficulties related to the discarding of used tires, and is also economical. Reforming is often done three to four times in the truck tire. Manufacturing a new tire, energy can cost around 2.3 times higher than retreading. As a thermosetting material, so it does not melt in temperature. But while heating up, it degrades, loses its elastic properties, and eventually burns and release energy. In the reforming process, raw rubber is needed to mix and vulcanize them to develop the properties of a new tire. Reforming of end of life tires can be done by recapping, retreading, and remolding. Recapping is the process of replacing the tread, retreading replaces both the tread and its shoulder, and remolding, also known as bead-to-bead retreading, involves replacing the tread, shoulder, and entire sidewall surface. But reformed tires should be as safe as new tires.
Ground Tire Rubber
As an elastomeric material, tires require special care. Because of steel's presence, it hampers mechanical grinding and creates a complex molding process. For grinding, it requires an ambient temperature. This recycled ground tire rubber can be done by ultrasound, or cryogenically to make small pieces of rubber. Vulcanized rubber goes through a grinding process to become 7–10 cm particles. After that, grinder and processed at ambient temperature to make smaller particles, removing steel (by magnetism) and fibers (using vibratory) sieves and screens. Depending on the required size, additional grinding (tertiary) can be done to produce smaller particle sizes. Ground tire rubber is mostly used in asphalt pavement as a modifier besides playgrounds, and other surfaces to landfill liners, molded rubber products.
Regeneration of tire rubber
Regeneration is a new technology for recycling rubber. Rubber regeneration is a kind of renewal or restoration process of tire rubber. In this process, the rubber tire goes through a chemical reaction without going through permanent chemical change. This process requires heat, chemical products, and mechanical energy. Regeneration rubber is capable to replace virgin rubber with fewer technical requirements. It recovers its flow capacity as virgin rubber and the characteristics of a new one. It becomes more plastic, malleable, less viscous, and processable, with properties like new rubber. For achieving this property the chemical reaction need to be breaking of covalent carbon-carbon (C-C), carbon-sulfur (C-S), and sulfur-sulfur (S-S) bonds. The quality of recovered regenerated rubber varies according to the source of the tire (different kinds of tire bus or truck and different companies) and the selectivity of the methods used in terms of the type and number of bonds to be broken. Regenerated rubber can be used in carpets, furniture, asphalt mixtures, glues, and adhesives.
Co-processing in cement production kilns
In this process, end-of-life tires at a cement production kiln go through material and thermal recovery. Due to the high temperature in cement kilns, often waste material is used as an alternative of fuel to dispose effectively and saving natural sources of fuel, and also cost-effective. Whole or ground tires can be burned in a cement kiln to produce clinker, an intermediate product in cement production. The tire gives instantaneous, complete, and smokeless combustion burning in high gas temperatures (1000–1600 °C). The high temperatures (1500–1600°C) and oxidizing atmosphere in the cement production kiln provides total ignition of the tire and volatile material. The iron content of steel-belted tires is beneficial for manufacturing cement.
Co-processing in thermoelectric power stations
In this process, ground tires are used with coal in the combustion reactor section to produce electrical energy and thermal energy. Tires generate 25–30% more energy than traditional power stations. Moreover, CO2 emissions are also reduced by around 23%. Traditionally, coal, oil, and gas provide 80% of the global energy demand. So, alternative use of tires as a fuel can provide a good source of energy with less burden on disposal.
Pyrolysis of tire rubber
Pyrolysis is a process to recycle tire rubber in a high-temperature chemical process inside a chemical reactor to produce oil, gas, and carbon black by utilizing whole or shredded tires. The oxygen-free reactor is commonly produced around temperature (400–700°C) and pressure (0.01–0.04 MPa) to degrade the composition of tire rubber. The procedure consists of: gaseous (hydrogen, methane, and carbonic oxides), liquid (water and oils), and residual solids (metals and dust). The rubber polymers break down into smaller molecules in this process. The tire pyrolysis process is one of the most used clean procedures to produce negligible emissions or waste.
Used Tyre Recycling Plant
For more than 10 years AIShred has been active in the conditioning of waste tyres and supplies plants all over the world - from intake to packaging. Waste tyres offer a particularly high recycling potential. In material recycling, the waste tyres are shredded and granulated.
View AIShred Waste Tyre Shredding & Recycling Plant for Sale: https://www.aishred.com/application/waste-tire-shredding.html
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