1. 昆明理工大学化学工程学院,云南 昆明 6505002. 昆明理工大学冶金与能源工程学院,云南 昆明 6500933. 宁夏师范学院化学化工学院,宁夏 固原 756000
收稿日期:
2019-04-10修回日期:
2019-06-26出版日期:
2020-02-22发布日期:
2020-02-19通讯作者:
陈正杰基金资助:
国家自然科学基金项目;宁夏回族自治区重点研发计划项目Dissolution of neutralized slag acid leaching substances of coal gangue
Guangya ZHENG1, Zhengjie CHEN2*, Jupei XIA1, Weijie WANG1, Fang GU1, Yibo SHI1, Haolin LI1, Wanlin LI1, Chenglong LIU31. Faculty of Chemical Engineering, Kunming University of Science and Technology, Kunming, Yunnan 650500, China2. Faculty of Metallurgical and Energy Engineering, Kunming University of Science and Technology, Kunming, Yunnan 650093, China3. College of Chemistry and Chemical Engineering, Ningxia Normal University, Guyuan, Ningxia 756000, China
Received:
2019-04-10Revised:
2019-06-26Online:
2020-02-22Published:
2020-02-19Contact:
Zhengjie Z.ChenChen 摘要/Abstract
摘要: 采用浸提法提取煤矸石中和渣酸浸物中的有价元素,考察了溶出温度、溶出时间和溶出液固质量比对酸浸物溶出过程的影响;以单因素实验为基础,进行正交实验,优化溶出工艺条件,用X射线衍射(XRD)和扫描电镜(SEM)表征煤矸石中和渣酸浸物、酸化产物及滤渣的物相和微观形貌。结果表明,酸浸物溶出最优工艺条件为液固质量比3:1、溶出时间40 min、溶出温度80℃,此时有价元素氧化物的溶出率分别为TiO2 82.63%, Fe2O3 96.48%, Al2O3 98.33%, CaO 87.72%, MgO 95.31%。提取后滤渣中只有SiO2和少量TiO2及CaSO4存在,表明煤矸石中和渣酸浸物中的有价元素通过该溶出工艺可充分溶出。
引用本文
郑光亚 陈正杰 夏举佩 王伟杰 辜芳 师一博 李浩林 李宛霖 刘成龙 . 煤矸石中和渣酸浸物的溶出[J]. 过程工程学报, 2020, 20(2): 174-181.
Guangya ZHENG Zhengjie CHEN Jupei XIA Weijie WANG Fang GU Yibo SHI Haolin LI Wanlin LI Chenglong LIU. Dissolution of neutralized slag acid leaching substances of coal gangue[J]. Chin. J. Process Eng., 2020, 20(2): 174-181.
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