| 摘要 |
This invention is directed to a process of adding amorphous glass frits which contain a large concentration of normally volatile materials, e.g., colourants like selenium, into the glass forming components present in a glass melting furnace during glass formation. Including the normally volatile materials in this frit form significantly lowers the volatility of those materials, which otherwise normally revert to the gaseoius state at the high operating furnace temperatures. Examples of some generally used batch materials that normally volatilise from the glass batch and hence are particularly suitable for incorporation in the amorphous glass frit, include selenium, lead oxide, zinc oxide, boron oxide, sulphates, fluorides, chlorides, bromides, iodides, phosphates and mixtures thereof.
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