亜鉛浸出残渣の脱鉄処理で得られる酸化鉄の精製と磁化特性に及ぼす事前水洗とNa_2B_4O_7フラックス添加量低減の影響 [in Japanese] Effects of the Prior Water Washing and Reduction of Amounts of Na_2B_4O_7 Flux Addition on Purification of the Raw Iron Oxide from the Zinc Leach Residue and their Magnetic Properties [in Japanese]
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The purification of raw iron oxide obtained from iron precipitation of the zinc leach residue using the recrystallization method with Na2B4O7 flux and their magnetic properties has been investigated. The main purpose of present study are to examine the effect of the prior water washing and decrease of amounts of Na2B4O7 flux on the purification of raw material. As a result, it was recognized that the prior water washing of raw material are undesirable, because of decrease of desulfurization in the purification by the sub-sequent recrystallization method,and the elimination of Zn, S and As in raw material is the best, when raw material/flux ratio is 70/30 and the prior water washing is not carried out. The magnetic properties is similar to that of α-Fe2O3 single crystal. The synthesis and magnetic properties of Mn-Zn ferrite from purified iron oxide were also examined.
- Journal of MMIJ
Journal of MMIJ 115(1), 43-48, 1999-01-25
The Mining and Materials Processing Institute of Japan