| SAPP提铀螯合树脂的耐氯性能测试 |
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| 引用本文： | 任宇,陈树森,勾阳飞.SAPP提铀螯合树脂的耐氯性能测试[J].铀矿冶,2017(2):99-104. |
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| 作者姓名： | 任宇 陈树森 勾阳飞 |
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| 作者单位： | 核工业北京化工冶金研究院,北京,101149 |
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| 摘 要： | 研究了苯乙烯-二乙烯苯骨架氨基磷酸酯功能基树脂(SAPP)对铀吸附性能、耐氯性能、对钙和铁离子的耐受性能以及淋洗性能,并对树脂功能基与铀的作用机制进行了分析。研究表明:当铀溶液中ρ(Cl~-)为25.0g/L时,每克干树脂对铀的吸附容量140mg;树脂对钙离子也表现出了较好的耐受性;在ρ(Fe~(3+))为1.0g/L时,每克干树脂对铀的吸附容量50 mg。此外,动态吸附试验证实该树脂对铀的吸附速率较快;可采用60g/L NaHCO_3+20g/L Na_2CO_3组成的混合淋洗剂对吸附饱和的SAPP树脂进行淋洗。
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| 关 键 词： | SAPP螯合树脂 铀 耐氯性 吸附 |
Test of Chlorine Resistance Behavior of SAPP Chelating Resin in Extraction Uranium Process |
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| REN Yu,CHEN Shu-sen,GOU Yang-fei.Test of Chlorine Resistance Behavior of SAPP Chelating Resin in Extraction Uranium Process[J].Uranium Mining and Metallurgy,2017(2):99-104. |
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| Authors: | REN Yu CHEN Shu-sen GOU Yang-fei |
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| Abstract: | Uranium adsorption properties,chlorine resistance,calcium resistance,iron resistance and desorption properties of the amino methylene phosphonate functional resin based on styrene-divinylbenzene(SAPP) resin were examined.When the concentration of chloride ion is about 25.0 g/L,the adsorption capacity of resins is 140 mg/g.The calcium resistance of the chelating resin shows well too.Whereas when the concentration of iron ion is about 1.0 g/L,the adsorption capacity of resins is over 50 mg/g.Meanwhile,the mechanism of resin adsorption uranium is analyzed.Dynamic adsorption experiments indicate that the adsorption rate of uranium on resins is fast.The composition of mixed solvent of 60 g/L sodium bicarbonate with 20 g/L sodium carbonate can be used to elute uranium from resins. |
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| Keywords: | SAPP chelating resin uranium chlorine resistance adsorption |
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