中国岩溶2011，Vol.30Issue(4)：472-478,7.
氯化铵浸取纤蛇纹石动力学研究
Study on the kinetics of extracting chrysotile with ammonium chloride
摘要
Abstract
Low mineral dissolution rate and the unrecyclable use of additives are two puzzles development of CO2 sequestration by mineral carbonation. This paper presents a new process of CO2 sequestration by mineral carbonation, which adopts NH4C1 solution as leaching agent, and study the reaction kinetics of chrysotile in NH4C1 solution in a systematic way. The results show that dissolution process is in conformity with the Elovich model and leaching process is usually finished in 1 hour. The leaching rate of magnesium can reach 12. 67 % when the concentration of NH4C1 is 5 mol/L and the reacting temperature is 100 ℃. And the leaching rate rise with temperature, meanwhile, neither does the ammonium chloride concentration nor the solid/liquid ratio have much influence on it. The activation energy of dissolution process is determined to be 129. 56 kj/mol in the test.关键词
氯化铵/纤蛇纹石/Elovich模型/活化能/二氧化碳矿物封存Key words
ammonium chloride/ chrysotile/ Elovich model/activation energy/ CO2 sequestration by mineral carbonation分类
化学化工引用本文复制引用
高雄,孟烨,朱辰,赵良..氯化铵浸取纤蛇纹石动力学研究[J].中国岩溶,2011,30(4):472-478,7.基金项目
国家自然科学基金项目(批准号:41002014)、国家863项目(批准号:2009AA06Z112)以及国家地调局项目(批准号:水[2010]矿评03-07-08)联合资助 （批准号:41002014）
