METHOD OF WASTE NON-FERROUS METALLURGICAL CHIPS TREATMENT

摘要

The invention concerns treatment of waste metallurgical chips with very low content of useful compounds occurring in metallurgical furnaces during production of non-ferrous metals from concentrates and secondary raw material. With the proposed procedure a new thermal insulation material is gained from piled chips, particularly useful for construction and limiting environmental pollution. This affect is achieved by heating the chips in an oxidation atmosphere to 1000 to 1200 degrees C for 60 to 240 seconds, while they expand. In the case of processing chips under conditions allowing agglutination of the expanded grains, an inert separating material is added to the chips, at a minimum quantity of 10 % by weight.