CONTINOUS PROCESS OF SMELTING METALLIC LEAD DIRECTLY FROM LEAD-AND SULFUR-CONTAINING METERIALS

摘要

Continuous direct smelting of metallic Pb from S-contg. Pb materials in an elongated horizontal reactor operates at a low and constant temp. and prevents undercooling. Slag and Pb phases flow in countercurrent and O2 is blown into the molten bath from below. Pb- and S-contg. materials are charged at controlled rates on to the bath in the oxidizing zone (O) on the side where Pb is tapped, while redn. agents are charged on the other side where the slag is tapped. Temp. of bath in the reducing zone (R) is maintained at a constant level by a controlled supply of additional heat.