FIELD: foundry. SUBSTANCE: mixture contains following components, wt.%: commercial lignosulfonates, 2.0-2.5; tall pitch-based binder, 1.5-2.0; refractory filler, the balance. Use of commercial lignosulfonates and said binder in said mixture in cited ratio facilitates intensified hardening and, as a result, drying time. Formability and fluidity of mixture are optimal for use in manufacture of sand cores on sandblasting machine. EFFECT: increased efficiency and improved quality of cores. 2 tbl
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