降低铜密闭鼓风炉富氧熔炼四氧化三铁影响的生产实践

PRACTICE OF REDUCING INFLUENCE OF Fe_3O_4 ON OXYGEN-ENRICHED AIR COPPER SMELTING IN CLOSED BLAST FURNACE

在铜密闭鼓风炉熔炼过程中,Fe3O4会从冰铜和炉渣中析出,沉积在炉底、炉侧壁及前床,严重影响生产。通过适当提高转炉渣中SiO2含量(21%～24%),可以减少进入鼓风炉(转炉渣作为块料)的Fe3O4量;选择并控制合理的熔炼渣型(Fe31%～35%、SiO233%～36%、CaO11%～13%,SiO2/Fe≈1 13,渣含Cu<0 30%)及精心操作,成功地避免了Fe3O4对鼓风炉生产的危害。

In the course of copper smelting in closed blast furnace,Fe3O4 can separate from copper matte or slag and adhere to the bottom,wall and front bed of the furnace,badly influencing the productionThrough increasing the quantity of SiO2(21%～24%)in the slag of converter,the quantity of Fe3O4 into the furnace can be lessenedChoice of reasonable slag type(Fe31%～35%,SiO233%～36%,CaO11%～13%,SiO2/Fe≈113 and Cu<030%)and carefully operating can lessen the quantity of Fe3O4 created in the course of the smelting