Patent ID: 8795581

Claim:
A process for the preparation of Slip-cast Fused Silica bodies comprising the steps of: a) preparing a slip cast slurry by ball milling a fused silica powder with B 2 O 3 as sintering aid cum de-vitrification inhibitor with solid loading in the range of 75 to 81 wt % in the aqueous medium, and wherein the B 2 O 3 content in the slurry ranges from 0.1 to 0.5 wt % of the total solid contents; b) milling the slurry as obtained in step [a] for 24 to 48 hours; c) slip casting the milled slurry as obtained in step [b] in a plaster of paris molds followed by air drying to obtain slip casted fused silica green bodies; d) separating the dried silica green bodies as obtained in step [c] from mold and drying in hot oven at 180° C. for 4 hrs; e) sintering the oven dried green bodies as obtained in step [d] at a temperature of 1200-1300° C. for 2-4 hrs to obtain the desired high density Slip-cast Fused Silica bodies.