| 钾长石粉酸浸除铁废液资源化的实验研究 |
| |
| 引用本文： | 郑骥,马鸿文,章西焕,文智慧.钾长石粉酸浸除铁废液资源化的实验研究[J].地球科学,2004,29(1):59-64. |
| |
| 作者姓名： | 郑骥 马鸿文 章西焕 文智慧 |
| |
| 作者单位： | 中国地质大学矿物材料国家专业实验室，北京100083 |
| |
| 基金项目： | 教育部博士学科点基金项目 (No .19990 49114 ) . |
| |
| 摘 要： | 钾长石粉经过硫酸或盐酸酸浸除铁后，废液中含有大量的金属离子和游离酸．对废硫酸进行循环利用实验，钾长石粉铁的浸出率达到88．3％．对酸浸废液进行蒸发结晶，分别制备得到了纯度为94．1％的绿钾铁矾和74％的三氯化铁．用硫酸酸浸废液蒸发结晶后，铁的回收率为70．0％，钾的回收率为96．5％，整个工艺无需高温，无需加压，操作简单，具有高效、低能耗、低污染的特点，表明用本项技术处理酸浸废液行之有效．分析认为，废液呈强酸性、溶液中存在大量Fd^2 、碱金属离子含量偏低是蒸发结晶过程中形成绿钾铁矾而不是黄钾铁矾的主要原因．
|
| 关 键 词： | 钾长石 酸性废液 结晶 绿钾铁矾 三氯化铁 废水处理 除铁 资源化 |
| 文章编号： | 1000-2383(2004)01-0059-06 |
Treatment on Acid Leaching Wastewater from K-Feldspar Powders |
| |
| ZHENG Ji,MA Hong-wen,ZHANG Xi-huan,WEN Zhi-huiNational Laboratory of Mineral Materials,China University of Geosciences,Beijing,China.Treatment on Acid Leaching Wastewater from K-Feldspar Powders[J].Earth Science-Journal of China University of Geosciences,2004,29(1):59-64. |
| |
| Authors: | ZHENG Ji MA Hong-wen ZHANG Xi-huan WEN Zhi-huiNational Laboratory of Mineral Materials China University of Geosciences Beijing China |
| |
| Institution: | ZHENG Ji,MA Hong-wen,ZHANG Xi-huan,WEN Zhi-huiNational Laboratory of Mineral Materials,China University of Geosciences,Beijing100083,China |
| |
| Abstract: | After sulfuric acid or hydrochloric acid leaching to remove iron from K-feldspar powders, the filtrate wastewater contains free acid and abundant useful metal ions such as iron. The leaching proportion of iron from K-feldspar powders is 88.3% after treated by the used sulfuric acid. With a purity of 94.1% and 74% respectively, voltaite crystal and solid FeCl_3 have been produced by crystallizing in a lower temperature following the vaporization of the wastewater, with 70% iron and 96.5% potassium recovered. No need of high temperature and pressure, and with high efficiency, low energy loss and less pollution, this process proves its effectiveness. The strong acidity, Fe~(2+) and rather lower concentration of alkalis ions are responsible for voltaite, not jarosite, crystallizing from the acidic iron-bearing water. |
| |
| Keywords: | K-feldspar acidic wastewater crystallizing voltaite ferric chloride |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
