PROCESS AND INSTALLATION FOR CONCENTRATING ORE MASS INCLUDING CONCRETION CONCENTRATE Russian patent published in 2002 - IPC

FIELD: methods and equipment for concentrating ore mass containing particles of ductile minerals and particles of brittle rock. SUBSTANCE: method comprises steps of decreasing thickness of particles by means of roll crusher, subsequently sifting received mixture through inclined sieve with mesh size more than that of disintegrated rock particles and less than length and(or) width of crushed particles of mineral; reducing thickness of particles until value less than 0.7 of size of mineral particles extracted from initial ore mass. EFFECT: possibility of interruption for long time period mining and lifting of initial ore mass (in order to reserve mineral resources) and enhancing environmental ecology. 11 cl, 2 dwg, 2 tbl