Research Of Surfactant Applied To Acid In Situ Leaching Of Low Permeability Uranium

It’s a big difficult problem for mining low permeability uranium sandstone mine.As a chemical agent that have high chemical activity, surfactant have adsorption andpermeability enhancement functions and so on. In this paper,a uranium sandstonemine as experimental subjects, taking into deep research through experiment includecolumn leaching with low permeability uranium sandstone sample and resin columnexperiment to justify effect on hydrometallurgical system after its addition. all thesewill make preparation for the application in in-situ leaching uranium mine.Basic information of the uranium mine was introduced.column leachingexperiment was done through on-site sampling to testify the enhancement of lowpermeability uranium sandstone sample with surfactant.this will provide technicaldata for filed test. experiment show that the addition of50mg/L complex surfactantsquickly improve the permeability that leaching solution in the mine sample.theimprove percentage rate can be above eighty.Adsorption was done through addition with different simple and complexsurfactants in leaching solution.effection of surfactant on resin adsorption wasresearched through comparative analysis of adsorption process and sorption capacity.the result show that addition of surfactant have no effect on the sorption capacity andadsorption curve compared with blank.Effection of surfactant on resin desorption was researched through addition ofsurfactant into elution reagent.resin used in experiment include first saturated resinand saturation adsorption resin. the result show that addition of surfactant canimprove the peak of liquor and reduce the residual uranium in resin. That research result has important reference value to the application andexpansion that surfactant used in situ leaching.