METHOD OF PRECONCENTRATION OF SOLID MINERAL RESOURCES Russian patent published in 2017 - IPC B03B7/00 B03B13/06 

FIELD: mining.

SUBSTANCE: method of preconcentration of solid minerals is that prior to forming the planned production intensity, according to the initial geological and geophysical core sampling is carried out, the identification of uneven distribution of solid minerals in the interior by analyzing fractional ore composition for the content of useful harmful components degrees of contrast and washability ore in the bowels of the definition of theoretically achievable targets of joint processing of mining mass for individual groups of exploratory wells (operating units). Formation of a planned ore flow of a given quality is carried out at the boundary content of useful, harmful components by means of radiometric batch sorting in transport tanks using ore control stations. Boundary value indication of division mining mass RKS set on the content of the useful components, mid-linear area of selective regime of separation of ores with sod separating the analysis of curves and contrast families and dressability of ores in the depths of the mine. Edge separation mode is chosen so that the mineral content in lean product RKS was equal to the middle linear region of selective separation of ores in sod, expressed in units of separation content of useful, harmful component. The lean product of RKS is crushed to size, regulated by the method of subsequent lump separation, divided into machine and nonmachine classes and carry out lump separation of machine classes with the direction of the enriched product of RKS, concentrate of lump separation and non-bulk classes for factory processing, and the waste rock from the stage of lump separation with mass fraction of valuable components, not exceeding the accepted content of the on-board content of the valuable component, into the waste.

EFFECT: increasing the efficiency of ore dressing by reducing the level of dilution of mined ore, reducing irreversible losses of valuable components and volumes of mineral raw materials sent to factory enrichment, while increasing and stabilizing its quality, increasing the completeness of excavation of ore mass from the interior.

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