yedrow Posted August 27, 2013 Report Share Posted August 27, 2013 Please excuse me if I've asked this before, but, can anyone give me a good definition of 'free silica'? I'm thinking that it is silica in a clay body that isn't a part of the Al2 2SiO2 2H2O molecule. Is that right? Joel. Link to comment Share on other sites More sharing options...
PeterH Posted August 27, 2013 Report Share Posted August 27, 2013 Yedrow, Try this definition from Hamer's dictionary: http://tinyurl.com/kbunft8 That is, "bits" of crystalline (i.e. non-glassy) SiO2. Note that this definition excludes all silicate minerals, not just kaolin. Regards, Peter Link to comment Share on other sites More sharing options...
Marcia Selsor Posted August 27, 2013 Report Share Posted August 27, 2013 That about sums it up. Free silica is what works in soda firing. It is also what creates hazardous dusts. SIlica dusts are bad and lodge in the lungs. Marcia Link to comment Share on other sites More sharing options...
yedrow Posted August 29, 2013 Author Report Share Posted August 29, 2013 Well now I just feel silly. I swore I had looked for this in the Hammer's dictionary. Seriously, I could see it in my mind. Thanks for the help. Joel. Link to comment Share on other sites More sharing options...
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