The article shows that relationship between selective and stochastic (conventional) disintegration is caused by a complex character of mineral properties and ore structure interaction with applied stress field. A relationship is presented for estimation of mineral liberation parametric characteristics with consideration of mineral structure in ore and in disintegration products. Disintegration characteristics, forming mineral selective liberation, are described, and quantity equations of multicomponent materials strength and structural parameters relationship are presented. It is shown, that strength distribution of particles in grinding differs within one size fraction and with respect to different size fractions and grinding stages, not to mention appertaining to different minerals. Several conditions are formulated, that provide for selective disintegration of ore, one of which being disintegration conditions adequacy to mineral structural and physical-mechanical properties.

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