METHOD AND APPARATUS TO UTILIZE WASTES WITH HEAVY METALS Russian patent published in 1994 - IPC

FIELD: environment protection. SUBSTANCE: method provides for wastes with heavy metals, mainly as oxides, processing and wastes having heavy metals and mineral component utilization, by preparation of mixture, made of wastes, slice forming and carbon containing materials, its restoring melting in induction furnace with metal crucible for cooling. Mixture restoring melting is made by inductor, using direct inductive heating of slice reaction zone. with following separation of melting products for alloy (metal) and slag and their removal from furnace. Alloy (metal) and slice mass removal speed is being maintained so, that deviation of reaction slag zone is in range + 30 to - 30 % of its value, determined from ratio, given in description. Apparatus for realization of the method has slice feeding system 10 and induction furnace, that has pouring tip 3 and passing partition 4, that separates slag reaction zone 5 from release zone. Peculiarity of the apparatus is presence in furnace of moving bottom 7 and mean 8 to catch alloy (metal) ingot 14 and filling inner characteristic dimension of crucible 1, determined from ratio, given in description. EFFECT: method and apparatus are used to utilize wastes with heavy metals. 2 cl, 1 dwg, 1 tbl