REFRACTORY MATERIAL OF VITREOUS SILICA

摘要

The invention concerns a refractory material comprised essentially of vitreous silica and presenting an improved resistance to corrosion by molten metals, principally aluminium. It contains at least 0.1 % and no more than 10 % by wt. of barium sulfate. It has a crystallized silica content of less than 10 % and it is comprised of at least 75 % vitreous or amorphous silica.