Inorganic Chemicals Industry >
Study on leaching extraction of high purity potassium chloride from sintering machine head ash
Received date: 2023-08-29
Online published: 2024-06-20
In order to achieve high value-added utilization of potassium chloride in the ash of sintering machine head，electrostatic precipitator dust from the sintering machine head and high-salt alkaline wash dewatering were used as raw materials.By adopting the process route of pretreatment，high salt wastewater synergistic water elution of potassium，vacuum filtration，impurity removal and decolorization，solid-liquid separation，and salt crystallization，Box Behnken experiment was designed.The mathematical model between three factors of leaching temperature，liquid-solid ratio，and stirring speed，and the removal rate of potassium from sintering machine head ash was established.The removal rate of ash and potassium from sintering machine head was optimized by using Box Behnken method，and salt crystallization was carried out by measuring the solubility of sodium chloride and potassium chloride at different temperatures.The response surface analysis experimental results showed that the degree of influence of three factors on the removal rate of potassium in the ash of the sintering machine head was in descending order：leaching temperature，liquid-solid ratio，and stirring speed.The optimal process conditions for leaching were a leaching temperature of 51.45 ℃，a liquid-solid mass ratio of 2.85∶1，a stirring rate of 674 r/min，and a potassium removal rate of 93.89% after 30 minutes.After impurity removal and decolorization treatment of potassium containing filtrate，the NaCl-KCl-H2O water salt system phase diagram was used to control the evaporation conditions for salt crystallization，so that the flash endpoint was controlled within the single solid phase crystallization zone of potassium chloride，and a purity of 92% potassium chloride product could be obtained.
CHEN Junhui , LIU Xiang , HU Qingxi , TIAN Bangxin , CHEN Jiale . Study on leaching extraction of high purity potassium chloride from sintering machine head ash[J]. Inorganic Chemicals Industry, 2024 , 56(6) : 102 -108 . DOI: 10.19964/j.issn.1006-4990.2023-0570
| 1 | 侯殿保，贺茂勇，陈育刚，等.资源优化配置与循环经济在钾资源开发利用中的应用［J］.化工进展，2023，42（6）：3197-3208. |
| HOU Dianbao， HE Maoyong， CHEN Yugang，et al.Application analysis of resource allocation optimization and circular economy in development and utilization of potassium resources［J］.Chemical Industry and Engineering Progress，2023，42（6）：3197-3208. | |
| 2 | 张硕.中国钾盐供需形势分析［D］.北京：中国地质大学（北京），2021：35-80. |
| ZHANG Shuo.Analysis of potash resource supply and demand situation in china［D］.Beijing：China University of Geosciences，2021：35-80. | |
| 3 | WAKEEL A， ISHFAQ M.Potash Use and Dynamics in Agricultu-re［M］.Singapore：Springer Singapore，2022. |
| 4 | 罗婷，张永庆，郑明贵，等.中国钾盐资源安全评估与预警研究［J］.地球科学进展，2022，37（6）：575-587. |
| LUO Ting， ZHANG Yongqing， ZHENG Minggui，et al.Security assessment and early warning of potash resources in China［J］.Advances in Earth Science，2022，37（6）：575-587. | |
| 5 | 张梅，付志刚，吴滨，等.钢铁冶金烧结机头电除尘灰中氯化钾的回收［J］.过程工程学报，2014，14（6）：979-983. |
| ZHANG Mei， FU Zhigang， WU Bin，et al.Recovery of potassium chloride from sintering EAF dust［J］.The Chinese Journal of Process Engineering，2014，14（6）：979-983. | |
| 6 | 刘宪，蒋新民，杨余，等.烧结机头电除尘灰中钾的脱除及利用其制备硫酸钾［J］.金属材料与冶金工程，2011，39（3）：40-45， 57. |
| LIU Xian， JIANG Xinmin， YANG Yu，et al.Removal of potassium and preparation of potassium sulfate from sintering EAF dust［J］.Metal Materials and Metallurgy Engineering，2011，39（3）：40-45，57. | |
| 7 | YU Yaowei， WANG Ziming， WEI Han，et al.Separation and recovery of potassium chloride from sinter dust of a steel plant［J］.Ironmaking&Steelmaking，2019，46（2）：193-198. |
| 8 | 李亚娇，赵艺伟，鞠恺，等.基于响应面法的粉煤灰氨含量测定过程浸提条件优化研究［J］.无机盐工业，2022，54（4）：145- 151. |
| LI Yajiao， ZHAO Yiwei， JU Kai，et al.Study on optimization of extraction conditions in process of determination of ammonia content in fly ash based on response surface method［J］.Inorganic Chemicals Industry，2022，54（4）：145-151. | |
| 9 | 黄继明，刘润清，吴思展，等.响应面法优化氯化铵焙烧浸出低品位菱锰矿工艺［J］.无机盐工业，2019，51（3）：34-37. |
| HUANG Jiming， LIU Runqing， WU Sizhan，et al.Optimization of extraction process of chlorination roasting-water leaching process for low-grade rhodochrosite by response surface methodology［J］.Inorganic Chemicals Industry，2019，51（3）：34-37. | |
| 10 | 胡渝杰，叶国华，左琪，等.响应曲面法优化承钢含钒钢渣浸出负组元钙的试验研究［J］.有色金属工程，2021，11（5）：52- 59. |
| HU Yujie， YE Guohua， ZUO Qi，et al.Study on optimization of leaching of negative component calcium from vanadium-bearing slag of Chenggang by response surface methodology［J］.Nonferrous Metals Engineering，2021，11（5）：52-59. | |
| 11 | 方伟成，程星星，孙常荣.响应曲面法优化污泥/粉煤灰复合陶粒滤料的制备［J］.无机盐工业，2022，54（9）：119-125，142. |
| FANG Weicheng， CHENG Xingxing， SUN Changrong.Optimization of preparation of sludge/fly ash composite ceramsite filler materials by response surface methodology［J］.Inorganic Chemicals Industry，2022，54（9）：119-125，142. | |
| 12 | 叶铁林.化工结晶过程原理及应用［M］.3版.北京：北京工业大学出版社，2020：3-22. |
| 13 | 邓天龙，周桓，陈侠.水盐体系相图及应用［M］.2版.北京：化学工业出版社，2020：54-100. |
| 14 | JENA S K， MOHANTY B， PADHY G，et al.Potassium recovery from muscovite using NaCl-roasting followed by H2SO4-leachi-ng［J］.Journal of Central South University，2022，29（6）：1881-1894. |
/
| 〈 |
|
〉 |