METHOD OF PYROMETALLURGICAL PROCESSING OF FINE-GRAINED METAL-CONTAINING MATERIALS

摘要

A pyrometallurgical process for the processing of solids and especially metallurgical intermediates and ores which form molten products at the treatment temperature, provides a mixture of the solids in finely divided form, high-oxygen gases and any energy carriers (carbonaceous or noncarbonaceous exothermic reactants with oxygen) which are combined to form a suspension which is introduced into a vertical combustion passage at a velocity preventing backfiring and at a temperature of the mixture which is less than that of the reaction. In the vertical combustion passage, the components of the reaction interact and the resulting suspension contains molten particles and is introduced into a cyclone chamber having a generally horizontal axis. The cyclone and a combustion chamber have walls cooled by evaporation of water against a superatmospheric pressure.