A Chance for the Second Life of Rubber - Recycling in the Service of the EarthIn today's world, rubber recycling is not science-fiction, but a permanent fixture in the technological process of elastomers. In addition to reducing pollutants entering the environment and meeting relevant environmental standards, workplaces no longer see this issue as a necessity, but as an opportunity to implement tasks based on the GOZ (Closed Circuit Economy) principle. Thinking about this principle, properly processed Rubber Products, instead of languishing in landfills for hundreds of years, have a chance to return to new products as one of many components. There are many reasons why rubber recycling is extremely important. Here are the most important ones:
- Waste reduction - Recycling allows old materials to be reused.
- Reducing the carbon footprint - reduces the need to produce new rubber, which translates into energy savings and reduced greenhouse gas emissions.
- Resource recovery - enables the reuse of materials in various industrial sectors.
- Benefits to the economy - reduces the need for new materials and the energy required to produce them.
- Environmental protection - Prevents the negative effects of storing materials that are not biodegradable.
Let's take a closer look at the rubber recycling process - a journey that transforms a used material into a valuable resource. How exactly does it take place? Let's start at the beginning. Recycling process consists of several key stages:
- Sourcing - Collection and selection of used rubber from various sources
- Shredding - most often using granulators to convert products into smaller sized fractions in the form of flakes, granules and dust.
- Sorting - rubber/steel/fabric division of materials
Each of these steps is aimed at transforming used Rubber Products into new, ready-to-use material.An important element is the aforementioned material recycling, which involves shredding rubber into finer fragments. These smaller pieces can be reused in various products, which is both economically and environmentally beneficial. There are many methods of material recycling, such as:
- Mechanical - traditional method of physical grinding of rubber
- Cryogenic - Use of liquid nitrogen to freeze and grind rubber more easily
Each of these methods has different technology and costs, but they all have the same goal: efficient rubber processing. The choice of method depends on specific needs and available resources. Interestingly, in addition to standard rubber waste processing technologies, there are other (more complicated methods) such as:
- Devulcanization - involving the removal of the cross-linked structure of the material (formed by vulcanization) under the action of high temperature and mechanical stress.
- Pyrolysis - where, depending on the type of process chosen (low/high temperature), the feedstock is broken down into gas, oil and pyrolytic carbon black. (Pyrolysis using molten salts to heat the reactor is an interesting method).
Each of these methods has its pros and cons, and the choice between them depends on the needs of the industry sector, available resources, costs, and the requirements for the final product. Thanks to advances in technology, the rubber recycling process is becoming more efficient, allowing for better use of raw materials and reduced environmental impact.
Justyna Jaskowiak Marketing Specialist
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