武汉工程大学学报2015，Vol.37Issue(9)：40-44,5.DOI:10.3969/j.issn.1674-2869.2015.09.007
氧化法从水云母中提钾及其机理
Extracting potassium from hydromica by oxidation method and its mechanism
摘要
Abstract
To solve the problem that large amount of insolubility potash resources are not utilized effectively in China,oxidation methods were used to extract soluble potassium ions from hydromica. The effects of the using quantity of cation-exchanger (barium ions), reaction temperature and reaction time on the optimum reaction conditions were explored. The oxidation mechanism and the changes of chemical structure in hydromica were investigated by X-ray diffraction spectrometry and X-ray photoelectron spectrometry. The result shows that the rate of extracting potassium is high when the mass ratio of barium ions is 0.035, the reaction temperature is 45℃ and the reaction time is 3 h. The coulomb effect was proposed to interpret the extraction mechanism: the oxidation of trivalent vanadium ions in octahedral site to tetravalent vanadium ions weakened the electrostatic force between potassium ion and tetrahedral sheet, then the exchange cations were introduced to extract potassium without damaging hydromica's structure. The extracting ratio of potassium from hydromica reaches 35%by using oxidation methods.关键词
钾/水云母/氧化法/库伦效应Key words
potassium/hydromica/oxidation method/coulomb effect分类
矿业与冶金引用本文复制引用
李紫谦,黄志良,孟鹏,危钰,陈常连,张占辉..氧化法从水云母中提钾及其机理[J].武汉工程大学学报,2015,37(9):40-44,5.基金项目
国家自然科学基金(51374155) （51374155）
湖北省科技支撑计划( 2014BCB034) （ 2014BCB034）
湖北省自然科学基金(2014CFB796) （2014CFB796）
湖北省科技支撑计划(2015BAA105) （2015BAA105）
