中性条件下水铁矿的转化研究

Study on Transformation of Hydrous Iron Ore Under Neutral Conditions

本课题运用X射线衍射技术研究了中性条件下水铁矿的转化过程。结果显示:在pH值为7时,水铁矿老化会形成更为稳定的赤铁矿;在水铁矿向赤铁矿转化的过程中,赤铁矿各晶面生长情况各异,其中(104)、(110)、(024)晶面作为赤铁矿的主要晶面,优先生成并迅速到达最大值。

X-ray diffraction technique was used to study the transformation process of ferrihydrite in neutral condition.The results show that at pH7,ferrihydrite will transform to hematite,one more stable iron oxide.In the process of transformation from ferrihydrite to hematite,the growth of hematite crystal faces is different.Among them,(104),(110)and(024)crystal faces,as the main crystal planes of hematite,are preferentially generated and quickly reach the maximum value.