中文摘要：

为铟抽取的一个 hydrometallurgical 过程和为软磁性的铁酸盐材料的铁的氧化物粉末准备被开发。当未加工的答案，铜和铟被铁粉末硬化和中立化第一恢复，用从锌氧化物的高酸的减少的沥滤的减小灰汁锻烧。Cu 并且在的恢复比率分别地是 99% 和 95% 。在软磁性的铁酸盐材料的磁性上有否定影响的一些有害杂质深深地与 sulfidization 纯化和中立絮凝方法被移开。在最佳条件下面，象 Cu 一样的杂质的内容， Pb，同样在纯 Zn-Fe 硫酸盐答案的艾尔是 Cd， Si， Ca 和 Mg 的不到 0.004 g/L，而是那些相对高。最后，铁的热降水在 210 業? 捡摩瀠潲潭整 ? 桴 ? 潳潮祬楳? 愠摮欠愠灰搠 ' 虡 H 敮 ?楷桴琠敨映牵桴牥挠湯散瑮慲楴湯椠据敲獡湩 g 被执行

英文摘要：

A hydrometallurgical process for indium extraction and ferric oxide powder preparation for soft magnetic ferrite material was developed. Using reduction lixivium from high-acid reductive leaching of zinc oxide calcine as raw solution, copper and indium were firstly recovered by iron powder cementation and neutralization. The recovery ratios of Cu and In are 99% and 95%, respectively. Some harmful impurities that have negative influences on magnetic properties of soft magnetic ferrite material are deeply removed with sulfidization purification and neutral flocculation method. Under the optimum conditions, the content of impurities like Cu, Pb, As, Al in pure Zn-Fe sulfate solution are less than 0.004 g/L, but those of Cd, Si, Ca and Mg are relatively high. Finally, thermal precipitation of iron is carried out at 210 ℃ for 1.5 h. The precipitation ratio of Fe is 93.33%. Compared with the quality standard of ferric oxide for soft magnetic ferrite materials, the contents of Al and Mg in obtained ferric oxide powder meet the requirement of YHT1 level of ferric oxide, and those of Si, Ca meet the requirement of YHT3 level of ferric oxide. XRD and SEM characterizations confirm that the obtained sample is well-dispersed spindle spherule with regular a-Fe2O3 crystal structure. The length-to-diameter ratio ofa-Fe2O3 powder is （3-4）：1 with an average particle size of 0.5 μm.