| abstract |
A glass melt for crystallizable glass comprising lithium aluminum silicate (LAS) glass ceramics, which has a sufficiently small number of bubbles in glass and ceramic products, and is economically secured by using an appropriate fining agent content. An environmentally friendly melting and clarification method is provided. An environmentally friendly melting and clarification method for glass melts used for crystallizable glass made of lithium aluminum silicate (LAS) glass ceramics, tin oxide as the main clarifier without using arsenic oxide and / or antimony oxide. For preparing a glass batch based on a lithium aluminum silicate (LAS) glass system with 0.1 to <0.6% added, a silica sand raw material usually used for introducing SiO 2 as a glass component A step of designing a raw material mixture for glass batch so that the ratio is less than 40% by weight, preferably less than 15% by weight, particularly preferably less than 5% by weight, and glass melting at a temperature of 1600 ° C. or more, preferably 1650 ° C. or more It consists of the process of clarifying the liquid. [Selection] Figure 1 |