FIELD: metallurgy.
SUBSTANCE: method includes dosing of zinc containing metallurgical scraps, solid fuel, binding and flux additives, mixing and pelletisation of produced charge, drying and heat treatment of pellets. Dosing of charge components is performed ensuring carbon content is charge by 80-100% of stoichiometric necessary for direct iron and zinc recovery in the charge, and melt temperature of lean material and ash of solid fuel in slag 1400°C maximum. Heat treatment of the pellets is performed at temperature 1350-1450°C and heating rate 400-500°/min, for this metallised product is removed from slag.
EFFECT: increased efficiency of processing of zinc containing scram with production of metallised product in form of zinc-free cast iron pellets.
4 tbl
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Authors
Dates
2015-04-20—Published
2014-01-09—Filed