The invention relates to an
oxygen enrichment intensifying
roasting method of a
nonferrous metal mineral resource, and belongs to the technical field of
energy conservation and emission reduction andintensifying. The
oxygen enrichment intensifying
roasting method comprises the steps that firstly, the
nonferrous metal mineral resource and fuel are mixed to be even after being smashed,
oxygen enrichment intensifying
roasting is conducted by igniting in an
oxygen enrichment environment, roasting
gas phase composition is monitored in the
oxygen enrichment intensifying roasting process, and timelyadjustment is conducted on the
oxygen enrichment concentration; when Co vol% in a high temperature
flue gas phase is larger than 80%, the oxygen enrichment concentration is controlled to be larger than 50% and less than 100%; and when CO vol% in the high temperature
flue gas phase is larger than 40% and less than or equal to 80%, the oxygen enrichment concentration is controlled to be larger than21% and less than or equal to 50%, and high temperature
flue gas generated in the roasting process is exhausted into the air after being subjected to dust collecting,
waste heat utilization and desulfuration treatment. The oxygen enrichment intensifying roasting method utilizes a strong thermodynamic
advantage of the oxygen enrichment environment, oxygen enrichment intensifying roasting is conducted on the
nonferrous metal mineral resource in an oxygen enrichment
atmosphere, the fuel
utilization rate is sharply improved while the temperature field, the
chemical potential and the dynamics conditions of a roasting
system are evened and enhanced, and the problems that the fuel
utilization rate is low, the reaction efficiency is limited and the environmental negative influence is large existing in a traditional roasting technology are solved.