METHOD OF LASER DISINTEGRATION OF GOLD ORE CONCENTRATE MICRO COMPONENT INTERGROWTHS Russian patent published in 2012 - IPC B03C11/00 B02C19/18 C22B11/00 

FIELD: process engineering.

SUBSTANCE: invention relates to extraction and processing of heavy minerals from hard-cleaning ore and complex alluvial deposits with increased content of fine and thin gold in intergrowths. Proposed method comprises opening mineral grain by wave attack. Intergrowths are destructed by electromagnetic field generating ultrasound wavelength being multiple of quartz grain h at the ratio of (2-3)Λ:h, and radiation intensity allowing transformation of electromagnetic polarisation into elastic deformation of variable strain in intergrowths of gold ore concentrate intergrowths at consecutive effects of ultrasound along and across intergrowth. Note here that concentrate surface heating temperature may not exceed that of phase changes of mineral inclusions while concentrate layer thickness may not exceed the range of radiation intensity attenuation by more than two times.

EFFECT: higher yield and efficiency, ecological safety.

2 dwg