Separation and enrichment of heavily clinkered fireproof material - with low iron@ and iron@ oxide content which is reduced in size passed through sieve and over magnetic roller

摘要

The material is broken up and reduced to particle sizes of below 15 mm. The particles are dried and passed through sieves to obtain fractions with tight particle size distribution. The fractions which are obtained by sifting are freed magnetically from free iron and are fed to a transport belt which runs over a roller which is in the form of a permanent magnet. The non-magnetic parts which have a low iron oxide content drop adjacent to the roller and are collected separately from the magnetic iron oxide containing parts which drop under the roller.