| abstract |
The level of precious-metal inclusions in glass products, e.g., glass substrates for liquid crystal displays, is reduced by stirring molten glass in a stir chamber ( 11 ) under conditions such that the magnitude of the shear stress τ on the chamber's wall ( 19 ) and on the surfaces of the stirrer ( 13 ) is reduced while at the same time, the Q•E product for the system is kept high, where Q is the flow of glass through the stirring system and E is the system's stirring effectiveness. |