FIELD: foundry. SUBSTANCE: suspension includes electrofilter dust from silicon-containing ferroalloy furnaces and summarily contains, wt.-%: ethyl silicate, 4.0-11.7; water, 18-22; phosphoric acid, 0.3-1.25; sodium aluminomethyl siliconate, 1.9-2.5; electrofilter dust, 0.5-12.5; and refractory filler, the balance. EFFECT: reduced cost. 2 tbl
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