A main criteria of degraded material in the glass industry are defects in the final product. One of these defects are bubbles from the interaction between glass melt and refractory. Due to the interaction the glass infiltrates the pores of the refractory brick and creates bubbles in the glass melt. The losing during such degraded material are heavy and cannot be accepted. One necessary aim is the reducing of the time off after the installation of refractory like spout, plunger, torque tube and orifice ring. Every saved hour lowers the imputed investment costs and generates gaining's for the producing firms. Also energy will be saved as a result of the higher efficiency of the furnace. High resistance materials were used to minimise the interaction between glass melt and refractory. This optimisation is connected with an increasing of the brick price. So the degraded material is reduced but the costs are rising due to the higher price of the new materials. A new cost effective method of refining refractories is shown. By integration of aluminium, aluminous solutions and similar substances into the pores of the refractories an oxygen depression is created. Due to this oxygen depression the surface tension of the glass melt rises and so the interaction between glass melt and brick decreases. By using a camera controlled furnace a decreasing of the bubble contents as a result of the refining process were measured. Different types of refractories were tested. Also results of corrosion tests were shown and correlate with the bubble measurements.
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