Controlled change of technological properties of rare metal minerals by radiation-thermal action

Intensifying Magnetic Separation of Iron-Bearing Sulfide Minerals by Electron Beam Irradiation Pretreatment

“…The research on effects of radiation on grindability, severance of the minerals ,electrification and selective flotation of polymetallic sulfide ore were investigated by G.R.Bochkarev et al [3,4,6,7,8,9] . The phase conversion of weakly magnetic iron bearing minerals was also reported.…”

“…The irradiation by accelerated electron beam results in a radiation-thermal effect on the surface/subsurface of mineral particles. Under its influences, new strongly paramagnetic or even ferromagnetic phase are formed, thus the magnetic susceptibility of fine mineral particle is raised [3][4][5][6][7][8] . This treatment makes possible an effective magnetic separation of some weakly magnetic iron-bearing minerals at lower intensity of magnetic field [4,6,7,9] .…”