H4-DH-18B mperature limits for oil in C Viscosity ISOVG at Helical gear units H4

Flender/Flender Gear Units/Helical gear units H4

imarily, the multifarious and widely fluctuating composition of the starting material. In order to obtain pure, reusable secondary raw material, the starting material normally had to pass through sorting process comprising several stages. The goal of the project was to develop an environmentally friendly and inexpensive separator with which non-ferrous metals - with particle size of less than 3 mm, in particular - can be se arated. The process was to be designed in such mannerthat it could be used economically in Loth small and mediumsized businesses. 2. Working steps The workin programme was split into four areas. The influence of changing electromagnetic fields on rezrence particles was determined with the aid of fundamental measuring set-ups. This stage was followed by construction of prototype. Serial tests were performed at the RWTH, in the Institute of Processing,Coking and Briquetting (Institutfur Aufbereitung, Kokerei und Brikettierun$The workon the problemsof precleaning the material, material feed and the resultant modifications of the prototype was performed on cooperative basis. After conclusion of the tests on the prototype, pilot plant was to be used in recycling facility. Here, information was to be obtained concerning the susceptibility to faults, the economics, throughput and purity of the recovered materials. 2 ~~ ~ ~~ 3. Results For the separation of non-ferrous metals from waste in the range of relatively small particle sizes, separatorwasconstructedafterpreliminarytriaIsforathroughputof 5t/,which borea concentrically arranged pole system of permanent magnets in non-conductive head block This pole system had considerably higher circumferential speed than the head block Maxi- mum separation and recovery rates of 9Yowere obtained with this separator This concentri- cally designed separator was, however, too sensitive to sporadically occurring iron in practice (particularly in the case of small particle sizes) I