99.9% Rubber Purity Possible with Eldan Recycling

Danish recycling industry equipment supplier Eldan Recycling A/S reports demand from its German speaking markets is increasing, and therefore it is reinforcing its sales activities in this region. The recycling and separation technology specialist has appointed Dieter Jerschl as Sales Manager for Germany, Austria and Switzerland. The company has also established a sales office to meet this regional demand. “The new sales office in Düsseldorf, Germany, is the logical next step due to the rising inquiries from this region,” commented Eldan managing director Toni Reftman.

The company has now delivered machines and plants to the recycling industry for more than half a century, and in this time has supplied more than 790 plants and 7000 single machines. Its first complete tyre recycling machine was delivered and installed in 1991, and Eldan says that since that time it has developed and optimised the process to obtain the best possible rubber granulate purity – up to 99.9 per cent free of liberated steel and textile in the standard plant, the company states. This level of purity is obtained through build equipment such as classifiers and aspirators that operate by means of the “air flow” principle.

Demand from tyre processors exists for an improvement in the purity of the steel fraction generated during tyre recycling. This involves the reduction of the rubber and textile contamination in the steel fraction, which improves its saleability and value. For this purpose, Eldan has developed three different systems enabling purities of 95-97 per cent, 97-98 per cent and 98-99 per cent pure steel respectively. These systems are of a modular design, which enables them to be either installed in-line with an existing plant or as a stand-alone system.

The first of these three solutions is a very “low-energy” solution, where the steel fraction is passed through a screening system. The oscillating screening system produces a cleaner steel fraction, which is then passed over a magnet system further increasing the steel’s purity. The second solution holds the advantage of being installable as a stand-alone unit. It contains a multi-purpose-rasper that reduces the steel further while at the same time liberating more of the rubber content and a specially designed magnet system, which “flings” the steel and liberates the impurities during the process. In the final step the steel passes over a zigzag separator where the air flow removes any light textile impurities. The third solution is the “Delux” version, which offers optimal cleaning of the steel fraction. This system also includes the multi-purpose-rasper as its first stage. After this the steel passes over a screening system as installed the first solution. By combining elements from the two first solutions it is possible to obtain a 98-99 per cent steel purity. All three above-mentioned solutions are “proven technology” already in operation with existing Eldan customers, the company points out.