Reuse of waste lime in a ceramic body that generated it.

Results are presented from studies of the effect of addns. of waste lime on the rheol. behavior of tile-body slips, the dilatometric behavior of tile bodies, water absorption and shrinkage of fired tiles, and the tile microstructure development during firing. A <0.1 wt.% addn. of waste lime had negligible effect on the apparent viscosity of slips, and an .apprx.0.5 wt.% addn. did not product significant changes in the microstructure. Control of F emissions due to recycling of the CaF2-contg. waste lime is discussed.