| 摘要 |
<p>A pellet 1 for use in the manufacture of glass by a glass batch process comprises a core A comprising SiO2, and one or more layers B, C over the core, at least one of these layers being a eutectic or near-eutectic layer. The near-eutectic layer may vary in its composition by up to 10% by % w/w from the corresponding eutectic composition. The eutectic or near-eutectic layer(s) may consist of a mixture of SiO2 and Na2O. A second covering layer C over the first eutectic or near-eutectic layer B may consist of a Na2CO3-CaCO3 mixture. The layered pellet is manufactured by pelletising the components of the core comprising SiO2, and pelletising the components of the first eutectic or near-eutectic layer and the pelletised core comprising SiO2, so that the components of the first eutectic or near-eutectic layer form a layer over the core. A method of making glass using these pellets is also claimed by heating in a glass melt furnace to produce a glass solution which is then cooled.</p> |
