超高浓度溶液化学与∑型捏合机械力化学反应器
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摘要
本文针对含钼白钨矿的碱分解工艺,提出了超高浓度溶液化学的概念,选择∑型捏合机械力化学反应器为手段,成功地解决了一种白钨矿的碱分解课题,为节能、环保、经济的湿法冶金工艺开辟了一条新路。利用超高浓度溶液化学原理,采用∑型捏合机械力化学反应器,对含有微量钼的白钨矿碱分解进行了操作简单、运行方便的试验。结果表明,以化学比(RC=1.5-2.0)为基础,液/固比(RL=0.16~0.18)为条件,经过100℃,1 h的捏合,金属钨的浸出率超高96.5%,钼的浸出率超高60%。这一令人难以置信的结果表明,超高浓度溶液化学是未来湿法冶金工艺发展最重要的课题之一;而∑型捏合机械力化学反应器是实现超高浓度溶液化学中最具潜力的化工设备之一。
The chemical conception of the super concentration solution and the reactor of mechanical force chemistry of ∑ type kneader were put forward. The alkaline soda decomposition leaching of one type scheelite ore were carried on successfully by small experiment. The test conditions as follows : chemistry ratio between the mole of sodium hydroxide and mole of tungsten,Rc = 1. 50 ~ 2. 00,ratio of liquid weight over solid weight,Rl = 0. 16 ~ 0. 18,and temperature is 100 ℃,time is one hour. The leaching efficiency of tungsten is 96. 12% ~ 98. 00 % and molybdenum over 60%. Therefore,it may seem almost incredible that the chemistry of super concentration solution is one of the most prospect in applied chemistry; the ∑ type kneader is one of the most applied prospect in the chemical equipment to be suitable for super concentration solution.
The chemical conception of the super concentration solution and the reactor of mechanical force chemistry of ∑ type kneader were put forward. The alkaline soda decomposition leaching of one type scheelite ore were carried on successfully by small experiment. The test conditions as follows : chemistry ratio between the mole of sodium hydroxide and mole of tungsten,Rc = 1. 50 ~ 2. 00,ratio of liquid weight over solid weight,Rl = 0. 16 ~ 0. 18,and temperature is 100 ℃,time is one hour. The leaching efficiency of tungsten is 96. 12% ~ 98. 00 % and molybdenum over 60%. Therefore,it may seem almost incredible that the chemistry of super concentration solution is one of the most prospect in applied chemistry; the ∑ type kneader is one of the most applied prospect in the chemical equipment to be suitable for super concentration solution.
引文
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[4]张颂阳,耿茂鹏.机械力化学与机械合金化[J].云南冶金,2006,35(4):46-49.
[5]曹怀宝,卢园,王剑波,等.机械力化学改性Ti O2研究[J].安徽理工大学(自然科学版)[J].2007(1):43-47.
[6]石海信.机械力化学效应及应用[J].化学教学,2008(5):50-53.
[7]蔡艳华,彭汝芳,马冬梅,等.机械力化学应用研究进展[J].无机盐工业,2008,40(8):7-10.
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[10]吴其胜.无机材料机械力化学[M].北京:化学工工出版社,2008.
[11]谢超,吴三琴,张泽鹏,等.机械力化学法制备有机改性蒙脱石粉体[J].中国粉体技术,2014,20(1):7-12.
[12]许红娅,王芬,谢宇星.机械力化学法合成无极材料的研究进展[J].化工新型材料,2009,(6):7-8.
[13]应媛芳,陈美玲,高宏.干磨与湿磨机械力化学活化磷矿的影响[J].大连交通大学学报,2015,(1):80-84.
[14]吴其胜,张少明,周勇敏,等.无机材料机械力化学[J].材料科学与工程,2001,19(1):137-142.
[15]超汝岩,邹长青.捏合机桨叶搅拌过程受力分析[J].海军航空学院学报,2011(5):571-575.
[16]彭泽田.从氨浸渣中回收钼[J].中国钼业,1996,20(4):24-25.
[17]徐志昌,张萍.电场碱分解工业Mo O3的碱浸流程研究[J].中国钼业,1999,23(4):42-44.
[18]张德海.东北寨难浸金矿提金工艺研究[J].黄金科学技术,2000,8(6):36-40.
[19]徐志昌,张萍.钼粉的相似与团聚原理[J].中国钼业,1997,21(2/3):86-90.