A process for lead slag reduction subjects the slag to top-submerged lance injection of oxygen containing gas and fuel, via a vertically suspended lance having its lower tip end submerged in the slag. The injection generates a combustion zone in the slag in which fuel is combusted and generates turbulent conditions forming a slag coating on the lower extent of the lance which is solidified by the cooling effect of the injected gas. The injection is conducted under reducing conditions, using a sulphidic material as a reductant, to reduce lead in the slag to metallic lead and thereby form a molten lead phase which is able to be tapped as lead bullion.
申请公布号
WO2008014538(A1)
申请公布日期
2008.02.07
申请号
WO2007AU01053
申请日期
2007.07.30
申请人
AUSMELT LIMITED;LIGHTFOOT, BRIAN, WILLIAM;MATUSEWICZ, ROBERT, WALTER
发明人
LIGHTFOOT, BRIAN, WILLIAM;MATUSEWICZ, ROBERT, WALTER