quartz and/or preparation of the goods which are produced from preparation and that kind of glass ceramics of the glass ceramics of spodumene, the glass ceramics, that glass ceramics and precursive body glass

摘要

The invention relates to: a method of preparing glass-ceramics of beta-quartz and/or of beta-spodumene; a method of preparing articles made from said glass-ceramics; novel glass-ceramics of beta-quartz and/or of beta-spodumene; articles made from said novel glass-ceramics; and lithium aluminosilicate glasses and which are precursors of such novel glass-ceramics. The present invention relates to the use, as agent for fining the glass-ceramic glass precursor and of fluorine and at least one oxide of a multivalent element.