Thread: ring tests
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Old 10-25-2019, 06:52 PM
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Pete VanderLaan Pete VanderLaan is offline
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Quote:
Originally Posted by Josh Bernbaum View Post
In fact I just checked on your spreadsheet and the silicon % of my mix is 64.94%. I don't know what I did wrong with my division and what I thought was more like a 55.4% sand content. Maybe I'm just calculating weight percentage and not thinking hard enough about oxide percentages which the spreadsheet seems to be accounting for?
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you have to look at the oxides supplied, not the compounds used. Sodium carb, NaCO3 supplies NaO. Now do the atomic weights for the carbon and oxygen lost. . It's seriously different. SP I think supplies around 81 lbs of actual oxides per 100 lbs batch.
Go back to GlassnotesIV. Henry has a list of materials to oxides supplied. My spreadsheet does it as well but you took a bad side road here.
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