废旧电池共沉淀法制备锰锌铁氧体

Preparation of Mn-Zn Ferrites from Spent Batteries by Coprecipitation Method

以废旧锌锰电池为原料，采用草酸铵共沉淀法进行了锰锌铁氧体的制备研究。研究表明，制备锰锌铁氧体的适宜条件为：共沉淀温度50～60℃；pH为3．5～4；煅烧温度1080～1150℃；煅烧时间为4～6h。借助于XRD、IR、SEM、TEM和VSM等手段对产物形貌、结构以及产物的磁性能进行了分析和表征，结果表明：所得产物的平均粒径约为28．5nm，产物的饱和磁化强度为53．1924（emu／g），矫顽力为1280A／m。

The preparation of manganese-zinc ferrite from spent Zn-Mn batteries by coprecipition method was studied. The suitable preparing conditions were： coprecipition temperature, 50 - 60℃ ; coprecipition pH value, 3.5 - 4; calcining temperature, 1080 - 1150℃ and calcining time, 4 - 6 h. The structure and magnetic properties of Mn-Zn ferrite powders obtained were investigated by XRD, IR, SEM, TEM and VSM techniques. The mean crystallite size of Mn- Zn ferrites was 28.5 nm and the saturation intensity of magnetization and the coercive force of the Mn-Zn ferrite obtained were 53. 1924 （emu/g） and 1280 A/m, respectively.