METHOD OF ROENTGENORADIOMETRIC SEPARATION OF SULFIDE COPPER-NICKEL ORES Russian patent published in 2003 - IPC

FIELD: mining industry; preliminary mechanical concentration of ores; processing copper-nickel ores. SUBSTANCE: proposed method includes lump-by-lump delivery of material to separation zone and roentgen radiation. Spectra of secondary roentgen radiation are registered for calculation of criterion K of lump-by-lump separation. Said criterion K is compared with threshold magnitude K₀ of lump-by-lump separation. According to results of comparison of magnitudes K and K₀ discharge of material from separation zone is performed separating dump waste product and concentrate of at least one grade. Magnitudes of intensity of secondary roentgen radiation is registered at four energy intervals of spectrum. First E₁ includes lines VK_α, Cr_α,β, MnK_α,β, FeK_α, CoK_α, second E₂ includes lines FeK_β, CoK_β, NiK_α; third E₃ includes lines NiK_β, CuK_α,β, ZnK_α, GaK_α and fourth E₄ is in energy interval 11.69-25.21 kev of scattered radiation. Kriterion K of lump-by-lump separation is determined as K = f{I₁, I₂, I₃, I₄, where I₁, I₂, I₃, I₄ are intensities of second roentgen radiation in energy intervals E₁, E₂, E₃, E₄, respectively. EFFECT: enhanced efficiency of concentration of copper-nickel ores due to increased content of valuable components in concentrate. 6 cl, 1 dwg