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萃取法回收水厂污泥中铝的技术研究 Ⅱ.浆液萃取法 被引量:3
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作者 徐美燕 孙贤波 赵庆祥 《华东理工大学学报(自然科学版)》 CAS CSCD 北大核心 2007年第3期375-378,409,共5页
以水厂污泥为原料,二-(2-乙基己基)磷酸为萃取剂,煤油为稀释剂,研究了浆液萃取铝回收技术。结果表明:含固率为5%的浆液直接采用P204-煤油萃取,在pH=5.0、cP204=0.5 mol/L、相比(VO∶VA)为1∶1的条件下,铝萃取率可达96.9%以上,萃取剂回... 以水厂污泥为原料,二-(2-乙基己基)磷酸为萃取剂,煤油为稀释剂,研究了浆液萃取铝回收技术。结果表明:含固率为5%的浆液直接采用P204-煤油萃取,在pH=5.0、cP204=0.5 mol/L、相比(VO∶VA)为1∶1的条件下,铝萃取率可达96.9%以上,萃取剂回收率达到98%以上。以5 mol/L硫酸作为反萃剂,相比5∶1的条件下经3级反萃,可回收97.6%的铝,且反萃液符合液态商品硫酸铝的质量标准,可作为混凝剂利用。 展开更多
关键词 水厂污泥 铝回收 浆液萃取 二-(2-乙基己基)磷酸
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Effects of Surfactant on Zinc Recovery by Solvent Extraction during Leaching in HCl-FeCl_3 Solution 被引量:1
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作者 卢立柱 康晓红 谢慧琴 《Chinese Journal of Chemical Engineering》 SCIE EI CAS CSCD 2002年第1期109-111,共3页
The effects of surfactant on the solvent extraction in leachingsphalerite were investigated. It is found that sodium dodecylsulfonate is the effective surfactant in improving the zinc recoveryfrom sphalerite in the aq... The effects of surfactant on the solvent extraction in leachingsphalerite were investigated. It is found that sodium dodecylsulfonate is the effective surfactant in improving the zinc recoveryfrom sphalerite in the aqueous FeCl_3-HCl-tetrachloroethylene system.Through the measurements of surface tension and viscosity of thesphalerite Slurry modified with different surfactants, it isconcluded that sodium dodecyl sulfonate in the concentration rang Of0.05 to 0.2 g·L^-1 can improve the viscosity of sphalerite slurry inthe water, decrease the surface tension of Leaching solution, preventthe aggregation of ore particles, and give very high zinc extraction. 展开更多
关键词 SURFACTANT ZINC solvent extraction LEACHING
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