FIELD: melting. SUBSTANCE: control system has detector of voltage drop in furnace shell, transformer, quantization unit, block fixing the starting and the final point of melted products release, unit calculating sliding weighted average value, correcting unit, first scaling block, block introducing starting conditions, resisting appliance, control block, second scaling block. Usage of all these members permits to measure voltage drop component in a shell, caused by blast furnace heat alteration. EFFECT: improved design. 1 dwg
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