On Wed, Apr 6, 2011 at 10:39 AM, Dawie Coetzee <[EMAIL PROTECTED]> wrote: > Some of those things might have uses in pigments or glazes in ceramics, where > they get locked into a substrate or otherwise chemically modified in the > firing > process. Perfectly safe pottery contains stuff that is downright scary to some > ears. >
One of my ideas was to frit it as you describe. Then it could be used as sand for mortar with no leaching potential. Of course, fritting takes a great deal of energy. _______________________________________________ Biofuel mailing list Biofuel@sustainablelists.org http://sustainablelists.org/mailman/listinfo/sustainablelorgbiofuel Biofuel at Journey to Forever: http://journeytoforever.org/biofuel.html Search the combined Biofuel and Biofuels-biz list archives (70,000 messages): http://www.mail-archive.com/biofuel@sustainablelists.org/
