WAELZ PROCESS OF VOLATILIZING SINC AND LEAD FROM IRON OXIDE-CONTAINING MATERIALS,申请号IN61CA1978-传众专利搜索

WAELZ PROCESS OF VOLATILIZING SINC AND LEAD FROM IRON OXIDE-CONTAINING MATERIALS

申请公布号：IN148623(B)

申请号：IN61CA1978

申请日期：1978.01.17

申请公布日期：1981.04.18

申请人：

METALLGES AG

发明人：RAUSCH H;STEINHOFEL H;SERBENT H;EICHBERGER H

分类号：C21B13/08;C22B1/24;(IPC1-7):C22B19/04;C22B13/02

主分类号：C21B13/08

摘要：<p>In a Waelz process for volatilizing zinc and lead from iron oxide- containing material in which pelletted feed is charged into an inclined rotary kiln together with solid carbonaceous reducing agent, and metallic iron- containing matter is discharged from the lower end of the kiln, some of the solid matter which is discharged from the kiln, and from which metallic iron- containing matter has been separated, being recycled to the kiln, the recycled solid matter is ground to a particle size below 1 mm, and mixed with the feed material before the latter is formed into pellets, which are then dried with oxygen containing gases at a temperature below 300 DEG C.</p>