FIELD: preparation of coal-water suspension. SUBSTANCE: method involves feeding preliminarily ground coal, water and plasticizing reactant into mill for providing wet grinding; obtaining suspension and measuring ash content in suspension; dividing suspension into two flows; conducting one flow for size separation into over-sized product and under-sized product; mixing second flow of suspension with over-sized product and supplying it for recirculation, for wet grinding stage, with amount of second-flow suspension being in inverse proportion to ash content in suspension. EFFECT: increased quality of product. 1 dwg, 2 tbl
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