首页>
外国专利>
FIRE RESISTING MATERIAL FOR ELECTROLYTIC CELL, METHOD FOR PRODUCING SAID FIRE RESISTING MATERIAL AND ELECTROLYTIC VAT USING SAID FIRE RESISTING MATERIAL
FIRE RESISTING MATERIAL FOR ELECTROLYTIC CELL, METHOD FOR PRODUCING SAID FIRE RESISTING MATERIAL AND ELECTROLYTIC VAT USING SAID FIRE RESISTING MATERIAL
展开▼
机译:电解槽用耐火材料,使用耐火材料制造耐火材料和电解槽的方法
展开▼
页面导航
摘要
著录项
相似文献
摘要
The invention relates to a refractory, porous, heat-insulating material, which is resistant to fluorine-containing gases and has a stable volume, in particular in the form of moulded bricks, for refractory, heat-insulating lining in electrolysis furnaces, in which metallic aluminium is produced by electrolysis of aluminium oxide dissolved in a fluoride melt, which material has an Al2O3 content of more than 50% by weight and a TiO2 content of from 2.5 to 10% by weight and forms acicular TiO2 crystals and/or TiO2-containing crystals, randomly growing into the pore space, under the action of fluorine-containing gases at temperatures between 700 and 1000 DEG C on the free surfaces, in particular on the boundary surfaces of intergranular voids, in the region of the material subjected to the fluorine gas. The invention also relates to a process for the preparation and to the use of the refractory material.
展开▼