FIELD: metallurgy. SUBSTANCE: smelt has, wt.-%: borax 94.5-96.5; reducing agent 3-5, and activating agent 0.5-1.5. As a reducing agent smelt can contain at least one substance taken from the group involving aluminium, boron carbide, cobalt boride or molybdenum boride, and ammonium chloride or sodium metaphosphate as an activating agent. EFFECT: enhanced quality of smelt. 3 cl, 2 tbl
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