Maksymuk O. Development and research of technology of production of a mineral melt in the bubble gas furnace

The Work is dedicated to the issue of development and improvement of the bubbling melting gas furnace of continuous output of melt jet and feed of burden, support of efficient and stable operation in bubbling mode of immersed bottom burners, development of the furnace melt jet tapping unit. For development of this technology there have been done experimental researches on the industrial furnace and on the hydraulic model. It has been determined that there are three hydrodynamic regimes of the melting bath operation: spray, bubbling and bubbling with rocking of molten bath. An equation which allows to calculate value of liquid level in bath, whereby a change of the regime occurs (spray/bubbling and contrariwise) has been derived according to the physical modeling of bubbling bath hydrodynamics. Minimal permissible loads in bubbling mode have been determined on the hydraulic models of bottom burners. Melt depth operating range for industrial mineral wool production furnace under which the bath operates in a bubbling mode, has been calculated. Minimal permissible load on industrial burners has been determined. The results of researches have been applied for design of mineral wool production furnaces on plant in Kyiv and in Berieza, Belarus. A small furnace has been developed and put into operation. The furnace allows to heat melt to the necessary technology temperatures, controlling the weight level of melt in the bath. The double housing version bubbling melting furnace with capacity 5 t/h of melt for "SAINT - GOBAIN ISOVER" has been designed, manufactured and now is being installed.