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Lithium Carbonate Subst. For Lepidolote


terrim8

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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?

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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?

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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)

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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.

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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.

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