湿法炼锌浸出液针铁矿法除铁晶种的制备

来源期刊:中国有色金属学报2008年增刊第1期

论文作者:邓永贵 陈启元 尹周澜 张平民

文章页码:27 - 31

关键词:针铁矿;水热法;准均相成核法;晶种

Key words:goethite; hydrothermal process; pseudo-homogeneous nucleation method; crystal seeds

摘    要:利用水热法在酸性条件下制备针铁矿晶种,经TG-DTG和XRD分析,结果表明:前驱体经80~110 ℃水热,可以制得针铁矿,且在110 ℃水热条件下,水热反应6 h所得产物结晶最好。受水热反应器限制,水热法制备的针铁矿的产量有限,若改用准均相成核法制备针铁矿晶种,可以满足湿法炼锌浸出液针铁矿法除铁所需大量晶种的要求。

Abstract: Goethite (α-FeOOH) was successfully prepared via hydrothermal method in acidic solutions. Thermogravimetry-differential thermogravimetry (TG-DTG) and X-ray diffraction (XRD) pattern indicate that the goethite crystal seed is successfully prepared from precursor via hydrothermal method in acidic solutions by hydrothermal synthesis at 80 -110 ℃, and the pure goethite with good crystal structure was prepared by hydrothermal process at 110 ℃ for 6 h. Larger amount of goethite seeds could be produced by pseudo-homogeneous nucleation method to meet the mass demand of industry to remove ferrous/ferric ions from the leaching solution in zinc hydrometallurgy.

基金信息:国家重点基础研究发展计划资助项目

有色金属在线官网  |   会议  |   在线投稿  |   购买纸书  |   科技图书馆

中南大学出版社 主办 版权声明   电话:0731-88830515 88830516   传真:0731-88710482   Email:administrator@cnnmol.com

互联网出版许可证:(署)网出证(湘)字第028号   湘ICP备09001153号