| 简介 |
FIELD : nonferrous metallurgy; mechanical engineering industry; construction materials industry; food-processing industry; other industries; methods of separation of the conductive particles from the mixture of the dispersible nonmagnetic materials.SUBSTANCE : the invention is pertaining to extraction of the nonmagnetic dispersible conductive materials from the mixture with the dispersible non-conducting nonmagnetic materials, such as the particles of the rare and the noble metals contained in the natural and technogenic placer of the mineral deposits. The method may be used in the nonferrous metallurgy, mechanical engineering industry, construction materials industry and the food-processing industry. The invention ensures the capability of extraction of the small-sized and fine fractions of the nonferrous, rare and precious metals from the mixture of the dispersible nonmagnetic materials. The method provides for the action on the flow of the mixture by the powerful high-gradient pulsing magnetic field. The pulses of the magnetic field are shaped asymmetrical in time, at which the pulse rise time is less the than the pulse fall time. The magnetic field intensity (H(t)) is no less than 106 A/м at the rate of the magnetic field intensity fluctuation (dH(t)/dt) of no less than 107 And/m-s and at the gradient of no less than 108 A/м2.EFFECT : the invention ensures the capability of extraction of the small-sized and fine fractions of the nonferrous, rare and precious metals from the mixture of the dispersible nonmagnetic materials.2 dwg |
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