FIELD: process engineering.
SUBSTANCE: invention relates to production of mineral wool. Mix is preheated to 300-400°C in service hopper by off gases. Gases are fed by high-pressure blower via gas duct to flue gas distribution structure. The latter is arranged at the hopper bottom part and composed of crossed perforated pipes protected by V-like plate made from steel angle piece with 45 degrees-angle.
EFFECT: higher efficiency of slag melt smelting.
3 cl, 1 dwg
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