Although you can't turn bread back into flour and yeast, you can recover some of the original ingredients in tires by heating them in a special furnace. The process is called pyrolisis, and it's based on the principle that if you heat tires without oxygen, they will decompose to a point that the original ingredients are recoverable. The market potential for
tyre shredding business is vast contributing to the applications which the shredded tyre provides across various sectors of the economy.
Pyrolisis has been used for 300 years to refine coke from coal, but it has drawbacks. One is that the recovered materials are seldom pure. Another is that it requires a large amount of energy, and a third is that the furnace can explode if oxygen gets in.
A Swedish recycling company overcomes these drawbacks with an innovative approach. It uses a closed system to prevent the introduction of oxygen, and it recycles the energy needed for start-up by introducing new rubber to the already heated gases. At 1,112 degrees Fahrenheit (600 degrees Celsius), the gases are hot enough to melt the new rubber almost immediately, which results in cleaner separation of the melted rubber from gases and other aggregates.
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