CAJ | 학술논문

以湿法炼锌过程中的中浸渣和挥发窑渣为原料,经浸出、还原、净化和共沉淀等过程制备软磁铁氧体所需的锰锌铁氧体共沉淀粉料.确定浸出工艺条件、硫化沉淀和氟化沉淀工艺条件.实验结果表明,中浸渣的最佳浸出工艺条件如下:温度为90～95℃,搅拌速度为200 r/min,硫酸用量为理论用量的1.15倍,时间为2.5 h,液固比为4:1;制得的共沉淀粉料中铁、锰和锌的平均含量比例与理论配方较符合,尤其是共沉淀粉料中各杂质元素含量很低,各杂质成分含量分别为Ca 0.018 0%,Mg 0.008 5%,Si 0.003 8%,A1 0.007 8%,Ni 0.017 0%,Pb0.001 2%,Cu 0.003 3%,Cr 0.002 8%及Cd 0.000 2%,达到锰锌软磁铁氧体材料对粉料的要求.
이습법련자과정중적중침사화휘발요사위원료,경침출、환원、정화화공침정등과정제비연자철양체소수적맹자철양체공침정분료.학정침출공예조건、류화침정화불화침정공예조건.실험결과표명,중침사적최가침출공예조건여하:온도위90～95℃,교반속도위200 r/min,류산용량위이론용량적1.15배,시간위2.5 h,액고비위4:1;제득적공침정분료중철、맹화자적평균함량비례여이론배방교부합,우기시공침정분료중각잡질원소함량흔저,각잡질성분함량분별위Ca 0.018 0%,Mg 0.008 5%,Si 0.003 8%,A1 0.007 8%,Ni 0.017 0%,Pb0.001 2%,Cu 0.003 3%,Cr 0.002 8%급Cd 0.000 2%,체도맹자연자철양체재료대분료적요구.
Mn-Zn ferrite coprecipitation powders were prepared from neutral leached residues and kiln slags in zinc hydrometallurgy after the processes of leaching, reduction, purification and coprecipitation. The optimum conditions of leaching, sulfide precipitation and fluorination precipitation were determined. The best leaching conditions are as follows: the leaching temperature 90-95 ℃, the stirring speed 200 r/min , the excess coefficient of sulfuric acid 1.15, the leaching time 2.5 h, and the ratio of liquid to solid 4:1.The results show that the content ratio of Fe, Mn and Zn of the coprecipitation powders accords well with theoretical prescription, especially with a low impurity content. The contents of impurity elements are as follows: Ca 0.018 0%, Mg 0.008 5%, Si 0.003 8%, A1 0.007 8%, Ni 0.017 0%, Pb 0.001 2%, Cu 0.003 3%, Cr 0.002 8%, Cd 0.000 2%, respectively, which can meet the qualification of powders being used in Mn-Zn soft magnetic ferrite.