Magnetization modification and pre-magnetization flocculta ion an d sedimentation of slime water
LI Jianjun
QIAO Shangyuan
ZHU Jinbo
MIN Fanfei
LIU Lingyun
ZHANG Liting
Abstract：Abstar ct:In order to investigate the influence of magnetization on same surface charge(ζpotential) of slime and surface hydration shell, the magnetization test on slime water was conducted taking magnetic field intensity and magnetizing time as variables.The slime water was clarified by natural sedimentation,flocculation,coagulation sedimentation,pre-magnetization flocculation and sedimentation method respec-tively.The sedimentation characteristics and magnetization mechanism were investigated.The results showed that,after being pre-magnet-ized for 2 minutes to 3 minutes under 0.15 T to 0.25 T magnetic field,the ζpotential of slime was decreased from 30.5 meV to 20.1 meV,the thickness of surface hydration shell was reduced obviously.The sedimentation velocity and tailings height of coagulation sedimen-tation,and pre-magnetization flocculation and sedimentation were better than those of flocculation sedimentation.The sedimentation veloci-ty,supernatant transmittance,tailings height were better than those of pre-magnetization flocculation and sedimentation.The tailings height decreased by 25%,the supernatant transmittance could reach 82.2%.
Keywords：magnetic treatmenthigh concentration slime waterζpotentialflocculation
Publication Date：2015-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：5( 1-4,11 )