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《Inorganic Chemicals Industry》 2005-01
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Preparation and surface modification of superfine ferric oxide from pyrite cinder

Zou Guangzhong,Wang Guohong,Ye Jixiong,Cheng Wei,Liu Yi,Zhang Hui (Department of Chemistry and Envirnment Engineering,Hubei Normal University,Hubei Huanshi 435002,China)  
The new technology for the preparation of superfine ferric oxide from pyrite cinder is studied.The FeSO_4 is first prepared by H_2SO_4 leaching method,the leaching rate of Fe is 97%.Then the rod particle-superfine ferric oxide with (120 nm) length and 30 nm diameter is prepared in the liquid homogeneous catalytic oxidation system,in which the crystal seed is prepared by liquid phase oxidation and the unique homogeneous catalyst is added.In order to avoid secondary aggregation of the particle,the product is modified with stearate to increase its lipophilic degree.This process is simple and practical,and the equipment adopted is not complex.
【Fund】: 湖北省教育厅技术创新项目(2000B08001)。
【CateGory Index】: TQ622
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