Punenkov S. E., Chief Technologist, Candidate of Engineering Sciences, e-mail: punenkov@mail.ru, “Kostanaiskie mineraly” Company

The state of and prospects of technology development of ore preparation and enrichment of chrysotile asbestos ores at JSC “Kostanaiskie Mineraly“ are observed. Much attention is paid to the process of homogenization of the mineral, it is carried out in the quarry via management of ore streams in the formation of a warehouse of raw ore, at intermediate warehouses. Automatic information “Rudopotok“ system for monitoring has been developed by the Institute of Mining Matter named after D. A. Kunaev. The flow chart of enrichment of chrysotile asbestos and basic equipment is presented. Dzhetygarinskoe deposit of chrysotile asbestos ore is the ore base of JSC “Kostanaiskiw Mineraly“. A large pool of deposits — the basic is developing. Depending on the morphology of the veins of chrysotile asbestos, six types of asbestos-bearing zones of single veins, difficult veins, small veins, big and small screens; dog-holes (non-industrial type of fiber) are distinguished. All areas, except dog-holes have commercial value. The boundary between the types of conditional asbestos bearing capacity is conditional. The ore zones of complex veins and large grid with average concentration of asbestos as much as 6.25 and 5.8 % respectively, are characterized by the highest content of asbestos. In order to enrich, coarse grit from an asbestine dust, chippings, sand-gravel mixture is conducted in addition to asbestos concentrates produced.