The Pyrocom Rotary Kiln

In the mid-1990s BASF, Ludwigshafen and APME, Brussels had run experiments witli electronic scrap in cooperation with the BC-Berlin Consult plant in Liibben, Germany. The BC plant consisted of an indirectly heated rotary kiln with 300 mm inner diameter and 3 m heated length driven at 750-850°C [20, 21, 55]. Two types of material were investigated, a fine fraction and a typically shredded electronic scrap fraction. Up to 

Category Total quota, including thermal treatment (%) Remarketing and recycling (%) 

Type Shredder Fine Fine Shredder Shredder 

1700 kg and feeds up to 35 kg/h were used. The experiments have shown that the metal-containing shredded fraction has been processed in the kiln without blockage. In terms of the fine fraction, and due to the high amount of plastics, carbonaceous residues were formed on the kiln wall and the processing had to be stopped. The pyrolysis products obtained in the runs are shown in Table 20.3. 

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