Concentration of Fe_3O_4 in Roasted Slag from Copper Impoverishment Smelting
铜电炉冶炼贫化渣焙烧富集Fe3O4

A copper-containing slag from electric furnace impoverishment in Yunnan is recycled into the raw material by adding CaO for roasting in oxygen atmosphere.The influences of holding time,holding temperature,slag grain size,and gas phase atmosphere on magnetic roasting are investigated.SEM and XRD are used to analyze the microstructure and phase change of roasted slag.The influences of copper slag roasted by adding CaO and grain size are observed by TGA.The results show that the addition of CaO is effective in...