FIELD: manufacture of building materials; applicable in production of synthetic porous fillers based on ashes of heat and power plants. SUBSTANCE: the offered method includes formation of raw granules from mixture with addition of 30-50 wt.% of nonburnt siftings of filling of kilns or return graphitization charge of electrode manufacture, their drying and burning up to carbon content of 2.0-3.0 wt.% with subsequent burning. EFFECT: higher efficiency. 2 tbl
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