terrim8 Posted January 18, 2017 Report Share Posted January 18, 2017 Dam battery industry- they're using up the lepidolite (or my local supplier just doesn't have any). Anyways, I have a nice recipe for a crater glaze that I want to try but it calls for lepidolite (lithium bearing mica) & I can't get any now so.... I have a bucket of Li-carbonate. Any ideas for a substitution? Link to comment Share on other sites More sharing options...
Min Posted January 18, 2017 Report Share Posted January 18, 2017 Thinking that might be tricky because of the fluorine? Wondering if that is part of the process of the cratering with your recipe? If that is the case I wonder if you could use a combo of lithium carb plus original cornwall stone (if you have any) to supply some fluorine? Also, Plainsman carries some odd ingredients, I wonder if they have any? If you just want to use lithium carb to replace the lithia from the lepidolite that should be easier, do you use glaze calc software? Link to comment Share on other sites More sharing options...
terrim8 Posted January 18, 2017 Author Report Share Posted January 18, 2017 Tony at Plainsman thought it would be the fluorine too, high LOI material . They don't have Lepidolite either but I have cornwall stone so maybe i can figure it out without the software. I think I actually can remember how to do this- way back to first year chem. ( eons ago) Link to comment Share on other sites More sharing options...
neilestrick Posted January 18, 2017 Report Share Posted January 18, 2017 Could try using lithium carb for the lithium portion and adding silicon carbide for the cratering. Link to comment Share on other sites More sharing options...
glazenerd Posted January 18, 2017 Report Share Posted January 18, 2017 thinking...................... later that day ........... 20% fluorspar 30% mica, 15% silica, 10% lithium carb. 30% corn. stone. Lithia is very close, silica the same, KnaO close, Al2O3 very close.. and LOI 17.06 My only concern: reduction firing?....... fluorspar will emit fluorine in reduction.. not a good thing. 1 concern.... added calcium - low flow. Link to comment Share on other sites More sharing options...
terrim8 Posted January 19, 2017 Author Report Share Posted January 19, 2017 thinking...................... later that day ........... 20% fluorspar 30% mica, 15% silica, 10% lithium carb. 30% corn. stone. Lithia is very close, silica the same, KnaO close, Al2O3 very close.. and LOI 17.06 My only concern: reduction firing?....... fluorspar will emit fluorine in reduction.. not a good thing. that's worth a try- i can just put it in with a regular cone 6 oxidation firing. Link to comment Share on other sites More sharing options...
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