Ceramics; a manual for chemists, engineers and manufacturers (1921)
Malinovszky, Andrew, 1875- · New York, D. Van Nostrand company · leaf 143
the factors used to cal-culate the refractory quotient of any clay: n Si02 = X .5333 = M = -5333 factors nAbOs = X.4706 = T*A= 4706 n FeO-Fe203= X.2222= i^=.2222 n CaOnMgOn MnOn K2On Na20nTi02 = X.28s7 = if =.2857 = X .4000 = it = .4000 = X.2254 = 1^ =.2254 = X.i702 = if =.1702 = X.258o = if =.2580… … Ludwigs isotectic lines of refractory clays. The following analysis, made by the author, is of aclav from St. Louis, Mo.: Si02 = 46.47 AI2O3 = 27.06 Fe203 = 4-45 CaO = 1.00 MgO = 1.05 Alk. = i.8q CERAMICS 133 Ti02 = 3-8sSO3 = .51 Moisture = 13.7 2 The following gives the method for the…
Pottery
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