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DETERMINATION OF IRON OXIDE AND TITANIA IN CLAY REFRACTORIES 1
Author(s) -
Kerr W. Raymond,
Read Edgar B.
Publication year - 1928
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/j.1151-2916.1928.tb16462.x
Subject(s) - hydrofluoric acid , titration , hydrochloric acid , inorganic chemistry , dissolution , ammonium hydroxide , chemistry , titanium , oxide , iron oxide , nuclear chemistry , potassium , sodium hydroxide , organic chemistry
Customary method of determining iron oxide and titania from ignited R 2 O 2 precipitate requires considerable time. Direct titration of fusions with sodium carbonate is impossible because of gelatinous silica. Direct titration of fusions with potassium bisulphate is accurate with clays low in silica and unfired clays. By treating with hydrofluoric and sulphuric acid, and dissolving with dilute hydrochloric and precipitating the R 2 O 2 by ammonium hydroxide and then fusing with potassium bisulphate the iron and titanium oxide can with accuracy be titrated. A detail method of procedure is given.