Process and device for production of molten glass

Abstract

The invention concerns a process and a device from the production of molten glass. According to the invention, measures will be taken to lead the current of the molten glass through the tank furnace so that cutoffs of the glass current between the surface of the glass bath, on the one hand, and the outlet opening on the other hand are avoided and a an equal holding period of all melt particles in the tank furnace is achieved.

1 . Process for producing molten glass from mixtures or fragments that uses the follow process steps: 
 a mixture or fragments are poured into a tank furnace that is heated by fossil fuel and are melted down;    the melt is released from the tank furnace through an outlet opening;    measures are taken to lead the current of the molten glass through the tank furnace so as to avoid cutoffs of the glass current between the surface of the glass bath on the one hand and the outlet opening on the other hand, and to achieved a sufficient holding period for all melt particles in the tank furnace.    
   
   
       2 . Process described in  claim 1  characterized by rerouting the current in front of the outlet opening.  
   
   
       3 . Process described in  claim 2  characterized by supplemental heating of the molten glass in the area of the outlet opening.  
   
   
       4 . Device for producing molten glass from mixtures or fragments; 
 using a tank furnace that has peripheral walls and a floor;    with a task range for the goods to be melted;    with and outlet opening;    characterized by the following features:    a means to prevent direct outlet of melt liquid from the glass bath surface to the outlet opening.    
   
   
       5 . Device described in  claim 4  characterized by arranging the current obstacles in the area of the outlet opening, which will force a rerouting of the downward melt current into a direction away from the outlet opening.  
   
   
       6 . Device described in  claim 5  characterized by placing a cover plate above the outlet opening that forces a rerouting of the downward melt current into a direction away from the outlet opening.  
   
   
       7 . Device described in  claim 4  characterized by a means that consists of a screen to prevent a direct discharge that screens of the outlet opening, that consists of a refractory metal and that projects from the outlet wall into the melt bath.  
   
   
       8 . Device described in  claim 7  characterized by the screen consisting of sheet metal made of refractory metal which is placed above the outlet opening.  
   
   
       9 . Device described under  claim 7  characterized by the screen consisting of a pipe connector.  
   
   
       10 . Device described in  claim 9  characterized by the pipe connector being used on the support of the outlet opening and lining the opening.  
   
   
       11 . Device described in  claim 4  characterized by using a canal under the means for preventing a direct discharge that is depressed lower than the remaining floor of the tank furnace.  
   
   
       12 . Device described in  claim 4  characterized by a supplemental heating source in the area of the outlet opening that forces a reroute of the downward melt current in a direction away from the outlet opening.  
   
   
       13 . Device described in  claim 12  characterized by the supplemental heating source encompassing pole electrodes or plate electrodes or block electrodes or calotte electrodes.  
   
   
       14 . Device described in  claim 13  characterized by the presence of side electrodes or floor electrodes or top electrodes.  
   
   
       15 . Process described in  claim 1  characterized by supplemental heating of the molten glass in the area of the outlet opening.  
   
   
       16 . Device described in  claim 4  characterized by placing a cover plate above the outlet opening that forces a rerouting of the downward melt current into a direction away from the outlet opening.  
   
   
       17 . Device described in  claim 12  characterized by the presence of side electrodes or floor electrodes or top electrodes.  
   
   
       18 . Device described in  claim 5  characterized by a means that consists of a screen to prevent a direct discharge that screens of the outlet opening, that consists of a refractory metal and that projects from the outlet wall into the melt bath.  
   
   
       19 . Device described in  claim 5  characterized by using a canal under the means for preventing a direct discharge that is depressed lower than the remaining floor of the tank furnace.  
   
   
       20 . Device described in  claim 16  characterized by using a canal under the means for preventing a direct discharge that is depressed lower than the remaining floor of the tank furnace.