| 摘要 |
FIELD: concentration of minerals, in particular, concentration of gold ores, may be used in processing of ore and non-ore raw materials. ^ SUBSTANCE: method involves complete (non-selective) mining of ore; staged grinding of ore in grinders; separating ground ore into size grades; separating off-grade part and mining waste from ground graded ore using lump-by-lump X-ray spectroscopic separation process and small-portion X-ray spectroscopic sorting-out process; performing additional grinding combined with screening of concentrated ore part in grinders in closed cycle after additional size separation into at least two grades; performing additional extraction of useful component from refuses of small-portion X-ray spectroscopic coarse-grain products sorting process by providing vibration concentration; thereafter, discharging refuses into dump waste product; directing vibration concentration product for additional grinding in closed cycle; additionally extracting useful component from refuses of small-portion X-ray spectroscopic small-grain products sorting process by performing double sequential vibration concentration process; thereafter, discharging these refuses into dump waste product; subjecting concentrated product of this stage of small-portion X-ray spectroscopic sorting process and vibration concentration process after carrying-out of above operations, corresponding to main processes, to air separation procedure, said concentrated product being preliminarily fractionated into intermediate size grades; returning cleaning process refuses to main operations of respective processes. ^ EFFECT: improved concentration process, reduced expenses for performing concentration processes, increased extent of extracting gold, and ecological safety of said processes. |
