Kitty litter is calcined clay. I think with a little more calcining, it could be made harder and with a little additive, could be made more like a ceramic.
(The company was one of my former heavy oil customers before nat gas blew out.)
7 posted on 01/14/2013 7:30:06 AM PST by Eric in the Ozarks
(In the game of life, there are no betting limits)