从粉煤灰盐酸浸出液中结晶氯化铝
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摘要
研究了用HCl气体从粉煤灰盐酸浸出液中提取氯化铝,考察了静置时间、反应温度、HCl气体通入量、浓盐酸洗涤液浓度对氯化铝结晶的影响。结果表明:氯化铝溶液中通入HCl气体可结晶出氯化铝晶体;在常温(25℃)、静置1h、HCl气体通入量25.61L、盐酸洗涤液浓度为37%条件下,氯化铝结晶率为92.74%;该法与其他结晶方法相比,结晶效果良好。
The crystallization of aluminum chloride from acidic leaching solution of fly ash by hydrochloric acid was studied.The effects of standing time,reaction temperature,usage of hydrogen chloride gas,concentration of hydrochloric acid using to wash aluminum chloride crystals on crystallization rate of aluminum chloride were examined.The experimental results show that aluminum chloride crystals can be crystallized effectively by pumping hydrogen chloride gas in the solution.The optimum conditions is standing time of 1h,hydrogen chloride gas volume of 25.61 L,concentration of hydrochloric acid using to wash crystals of 37% at room temperature.Under the conditions,the crystallization rate of aluminum chloride is 92.74%.Compared with other methods,the method is better for crystallizing aluminum chloride.
The crystallization of aluminum chloride from acidic leaching solution of fly ash by hydrochloric acid was studied.The effects of standing time,reaction temperature,usage of hydrogen chloride gas,concentration of hydrochloric acid using to wash aluminum chloride crystals on crystallization rate of aluminum chloride were examined.The experimental results show that aluminum chloride crystals can be crystallized effectively by pumping hydrogen chloride gas in the solution.The optimum conditions is standing time of 1h,hydrogen chloride gas volume of 25.61 L,concentration of hydrochloric acid using to wash crystals of 37% at room temperature.Under the conditions,the crystallization rate of aluminum chloride is 92.74%.Compared with other methods,the method is better for crystallizing aluminum chloride.
引文
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[2]陈朝轶,吕莹璐,李军旗,等.用硫酸从粉煤灰中直接浸出氧化铝[J].湿法冶金,2013,32(5):309-311.
[3]刘素萍.浅谈电厂粉煤灰的再利用[J].内蒙古石油化工,2012(23):93-94
[4]李来时.粉煤灰中提取氧化铝研究新进展[J].轻金属,2011(11):12-16.
[5]张风平,徐本军,黄彩娟,等.粉煤灰焙烧预处理对微波碱熔法溶出硅、铝的影响[J].湿法冶金,2014,33(5):378-380.
[6]BLANCO F,GARCIA M P,AYALA J.Variation in fly ash properties with milling and acid leaching.Fuel,2005,84(1):89-96.
[7]高岗强,李守诚.我国高铝粉煤灰提取氧化铝的产业化进展[J].内蒙古科技与经济,2012(1):19-20.
[8]杨静,蒋周青,马鸿文,等.中国铝资源与高铝粉煤灰提取氧化铝研究进展[J].地学前缘,2014,21(5):313-324.
[9]张廷安,豆志河,吕国志,等.一种铝土矿酸法生产氧化铝的方法:201010172151.7[P].2010-05-14.
[10]魏存弟,杨殿范,张东利,等.循环流化床粉煤灰制备结晶氯化铝的方法:200710055504.3[P].2007-04-10.
[11]候福春,谷明春,闫景辉.利用煤矸石制备结晶氯化铝、聚合氯化铝[J].长春光学精密机械学院学报,1999,22(1):65-67.
[12]闫峰兵,姜小东.煤矸石的综合利用:制备结晶氯化铝[J].能源基地建设,2000(4):58-58.
[13]李建中.用煤矸石生产结晶氯化铝及聚合氯化铝[J].贵州化工,1995(2):38-40.
[14]陆胜,赵宏,解晓斌.生态处理粉煤灰制备结晶氯化铝、聚合氯化铝的实验研究[J].粉煤灰,2003,15(2):10-11.
[15]于广河,何凌燕.用盐酸法从煤矸石中提取氧化铝[J].化学世界,1996(3):126-129.
[16]崔慧霞,程文婷,郭彦霞,等.六水合氯化铝在不同氯化物体系中的溶解度现象研究[J].无机盐工业,2013,45(5):9-12.
[17]BROWN R R,DAUT G E,MRAZEK R V.Solubility and activity of aluminum chloride in aqueous hydrochloric acid solutions[R]//United States,Bureau of Mines,Investigative Report 8379.Washington:United States,Bureau of Mines,1979:1-17.
[18]MAYSILLES J H,TRAUT D E,SAWYER D L.Aluminum chloride hexahydrate crystallization by HC1gas sparging[R].Washington:United States,Bureau of Mines,1982.
[19]SHANKS D E,EISELE J A,BAUER D J.Hydrogen chloride sparging crystallization of aluminum chloride hexahydrate[R].Washington:United States,Bureau of Mines,1981.