How to Scrap Tires?

Each year millions of tires are discarded. Waste tire disposal is a difficult task as tires are non-biodegradable components. The conventional method to dispose of waste tires is illegal dumping, landfilling, or stockpiling; all these are short-term solutions. So how do you scrap old tires properly? We’ll look into some best methods to address this problem. 

Menace Caused by Waste Tires 

Stockpiled tires are a breeding ground for vermin, snakes, mosquitoes, and parasites. Accidental fires in tire dump rage for months and creates toxic fumes. 

Another major problem with dumping waste tires is landfilling as they reach the top of landfill and damage liners and caps. Tires are non-desirable at landfills due to 75% of void space and large volumes that quickly consume valuable space. Most European and North American countries banned tire landfilling and made recycling an essential process.

Recycling sounds like a perfect thing to do if you don’t know how to scrap tires. However, it isn’t simple to do it. While it is widespread, it takes lots of effort.

So if you’re thinking about the process of recycling tires, here is the right method to do it. 

Waste Tires Collection

As you know, the first thing to do is to collect waste. After reaching a certain amount, these tires are carried to the collection points. 

Processing of Tires (Shredding)

After you take waste tires, the first step is to process plants to cut them into small pieces. The idea would be to lessen the size of the tire into material that you can easily handle. 

Ambient Mechanical Grinding Process

The tire scrap is broken at ambient temperatures in the mechanical grinding method. Recyclers pass tires through shredders, which further break tires into chips. It is possible to feed chips into a granulator while breaking them into small pieces while removing the fiber and steel in the process. The remaining steel is magnetically drawn and fiber through shaking screen combinations and wind sifters. Getting final rubber particles through further grinding in the secondary granulator with rotary mills at high speeds is possible. 

Pyrolysis

By pyrolysis, we mean thermal decomposition of scrap tires either in the lack or absence of oxygen. Pyrolysis uses the pre-treated truck or car tire chips as principal feedstock. It is a two-phase treatment using thermal decomposition for heating rubber without oxygen to further break it into more parts, e.g., tire-derived fuel (TDF), char, and synthetic gas. Post-cracking and cracking occur as we heat the material further to temperatures ranging from 450 to 500. 

Using TDF in paper mills, power plants, or cement kilns is among the best scrap tire uses. It is possible to use the char in processes of low-value production as a filler or colorant. 

Cryogenic Grinding

The cryogenic grinding process means scrap grinding at freezing temperatures of minus 70 to 80 C with commercial refrigerants and liquid nitrogen. Cryogenic processing typically requires a pre-treated truck or car tires as the feedstock, mostly in ambient granulate or chips form. 

On exposing the tires to low temperatures, they turn brittle, and it is possible to break and crush them easily. It can be a four-phase system, including cooling, separation, milling, and size reduction. The process doesn’t need as much energy as others and produces fine-quality rubber crumbs.

Conclusion

So, if you’re not interested in sending your old scrap tires recycling plants, you can recycle them in DIY projects, use them in parks, gyms, cafes, zoos, or offer them to your nearest garage. We would say that recycling solid waste, including tires, is vital to ensure the environment’s cleanliness. 

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