001×8树脂从离子型稀土浸出液中吸附稀土及杂质离子的性能研究
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摘要
通过静态吸附和动态吸附实验,研究温度、pH值、稀释倍数和流速对001×8树脂从离子型稀土浸出液中吸附稀土与杂质离子的吸附量及分离系数的影响.结果表明:浸出液中稀土与杂质离子的吸附量及分离系数随着pH值的增大呈现出先增大而后减小的趋势,在pH值为3.5时达到最大值;随着温度的升高而增大,吸附量在313 K后逐渐趋于平衡.树脂对各离子吸附能力大小为:RE~(3+)>Al~(3+)>Mg~(2+)>SiO_3~(2-).RE~(3+)、SiO_3~(2-)和Al~(3+)的吸附量随着稀释倍数的加大而增大,随着流速的加快而减小,而Mg~(2+)的吸附量随着稀释倍数的加大或流速的加快而减小.因此,增大稀释倍数和降低流速有利于001×8树脂吸附稀土和除去杂质.
To reveal the regulations of adsorption capacity and separation coefficient during the adsorption of RE~(3+)and impurity ions from ionic-type rare earth lixivium, the effect of temperature, p H value, dilution ration and flow velocity were investigated through static and dynamic adsorption experiments. The results show that the adsorption capacity and separation coefficient tends to increase first then decrease with the increasing of p H, and reaches maximum at pH 3.5. Adsorption capacity increases with the rising of temperature and tends to be balanced after 313 K. The adsorption capability order of 001×8 resin to all related ions is: RE~(3+)>Al~(3+)>Mg~(2+)>SiO_3~(2-). The adsorption capacity to RE~(3+), Si O_3~(2-)and Al~(3+)is proportional to desaturation multiple, and inverse ratio to flow velocity. Mg~(2+) adsorption reduces with the increase of desaturation multiple or flow velocity. Thus increase of desaturation multiple and decrease of flow velocity are beneficial to the rare earth adsorption capacity and impurities removing capacity of 001×8 resin.
To reveal the regulations of adsorption capacity and separation coefficient during the adsorption of RE~(3+)and impurity ions from ionic-type rare earth lixivium, the effect of temperature, p H value, dilution ration and flow velocity were investigated through static and dynamic adsorption experiments. The results show that the adsorption capacity and separation coefficient tends to increase first then decrease with the increasing of p H, and reaches maximum at pH 3.5. Adsorption capacity increases with the rising of temperature and tends to be balanced after 313 K. The adsorption capability order of 001×8 resin to all related ions is: RE~(3+)>Al~(3+)>Mg~(2+)>SiO_3~(2-). The adsorption capacity to RE~(3+), Si O_3~(2-)and Al~(3+)is proportional to desaturation multiple, and inverse ratio to flow velocity. Mg~(2+) adsorption reduces with the increase of desaturation multiple or flow velocity. Thus increase of desaturation multiple and decrease of flow velocity are beneficial to the rare earth adsorption capacity and impurities removing capacity of 001×8 resin.
引文
[1]池汝安,田君.风化壳淋积型稀土矿化工冶金[M].北京:科学出版社,2006.
[2]李永绣.离子吸附型稀土资源与绿色提取[M].北京:化学工业出版社,2014.
[3]池汝安,田君.风化壳淋积型稀土矿评述[J].中国稀土学报,2007,25(6):41-50.
[4]李永绣,周新木,刘艳珠,等.离子吸附型稀土高效提取和分离技术进展[J].中国稀土学报,2012(3):257-264.
[5]余攀.离子型稀土新型浸矿剂遴选及浸矿工艺研究[D].赣州:江西理工大学,2014.
[6]王瑞祥,杨幼明,杨斌,等.一种离子吸附型稀土提取方法:中国,CN103266224A[P].2013-08-28.
[7]马荣骏.溶剂萃取中的乳化及三相问题[J].有色金属(冶炼部分),1996,(3):42-45.
[8]倪起峰.离子交换法在稀土分离中的地位[J].稀有金属与硬质合金,1990(1):32-34.
[9]黄艳,章志昕,韩倩倩,等.国内离子交换树脂生产及应用现状与前景[J].净水技术,2010,29(5):11-16,29.
[10]李响,魏荣卿,刘晓宁,等.脂肪磺酸基阳离子交换树脂对Cr3+的吸附和解吸性能[J].化工环保,2008(3):201-204.
[11]平伟光,高建峰,胡拖平,等.表面炭化磺酸基型阳离子树脂的制备及其对Fe(Ⅲ)吸附性能的研究[J].离子交换吸附,2015(1):32-42.
[12]蓝虹云,雷福厚,黄婧婧,等.磺酸基聚松香苯甲酯的合成及其对金属离子的吸附[J].林产化学与工业,2005(1):29-32.
[13]王福兴,黄松涛,罗伟,等.萃取法处理低镍钴浸出液的工艺研究[J].稀有金属,2011,35(5):753-758.
[14]ZHANG X,LI A M,JIANG Z M,et al.Adsorption of dyes and phenol from water on resin adsorbents:effect of adsorbate size and pore size distribution[J].Joural of Hazardous Materials,2006,137(2):1115-1122.
[15]AHMAD H B,MOHAMMAD S H,MASOUD S G,et al.Kinetics,equilibrium and thermodynamic study of Cr(VI)sorption into toluidine blue o-impregnated XAD-7 resin beads and its application for the treatment of wastewaters containing Cr(VI)[J].Chemical Engineering Journal,2010,160(1):190-198.
[16]张一帆,王志伟,安莹,等.离子交换树脂吸附铵性能研究[J].环境工程,2014(1):55-59.
[17]迪安.兰氏化学手册[M].北京:科学出版社,1991.
[2]李永绣.离子吸附型稀土资源与绿色提取[M].北京:化学工业出版社,2014.
[3]池汝安,田君.风化壳淋积型稀土矿评述[J].中国稀土学报,2007,25(6):41-50.
[4]李永绣,周新木,刘艳珠,等.离子吸附型稀土高效提取和分离技术进展[J].中国稀土学报,2012(3):257-264.
[5]余攀.离子型稀土新型浸矿剂遴选及浸矿工艺研究[D].赣州:江西理工大学,2014.
[6]王瑞祥,杨幼明,杨斌,等.一种离子吸附型稀土提取方法:中国,CN103266224A[P].2013-08-28.
[7]马荣骏.溶剂萃取中的乳化及三相问题[J].有色金属(冶炼部分),1996,(3):42-45.
[8]倪起峰.离子交换法在稀土分离中的地位[J].稀有金属与硬质合金,1990(1):32-34.
[9]黄艳,章志昕,韩倩倩,等.国内离子交换树脂生产及应用现状与前景[J].净水技术,2010,29(5):11-16,29.
[10]李响,魏荣卿,刘晓宁,等.脂肪磺酸基阳离子交换树脂对Cr3+的吸附和解吸性能[J].化工环保,2008(3):201-204.
[11]平伟光,高建峰,胡拖平,等.表面炭化磺酸基型阳离子树脂的制备及其对Fe(Ⅲ)吸附性能的研究[J].离子交换吸附,2015(1):32-42.
[12]蓝虹云,雷福厚,黄婧婧,等.磺酸基聚松香苯甲酯的合成及其对金属离子的吸附[J].林产化学与工业,2005(1):29-32.
[13]王福兴,黄松涛,罗伟,等.萃取法处理低镍钴浸出液的工艺研究[J].稀有金属,2011,35(5):753-758.
[14]ZHANG X,LI A M,JIANG Z M,et al.Adsorption of dyes and phenol from water on resin adsorbents:effect of adsorbate size and pore size distribution[J].Joural of Hazardous Materials,2006,137(2):1115-1122.
[15]AHMAD H B,MOHAMMAD S H,MASOUD S G,et al.Kinetics,equilibrium and thermodynamic study of Cr(VI)sorption into toluidine blue o-impregnated XAD-7 resin beads and its application for the treatment of wastewaters containing Cr(VI)[J].Chemical Engineering Journal,2010,160(1):190-198.
[16]张一帆,王志伟,安莹,等.离子交换树脂吸附铵性能研究[J].环境工程,2014(1):55-59.
[17]迪安.兰氏化学手册[M].北京:科学出版社,1991.