Premium
A RAPID METHOD FOR THE ANALYSIS OF SILICEOUS REFRACTORIES *
Author(s) -
COLE SANDFORD S.,
SCHOLES S. R.
Publication year - 1934
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.1151-2916.1934.tb19295.x
Subject(s) - residue (chemistry) , alkali metal , mineralogy , chemistry , analytical chemistry (journal) , evaporation , materials science , inorganic chemistry , organic chemistry , thermodynamics , physics
Evaporation with HF and H 2S O 4 removes silica. Ignition of residue at 800 to 900 °C yields a mixture of R 2 O 3 and sulfates, which is weighed. The residue is brought into solution and R 2 O 3O , CaO 3 and MgO are determined by standard methods. CaO and MgO are calculated back to sulfates and alkali is calculated from weight of ignited residue. Silica is found by difference. A summary of previous investigations of the behavior of sulfates at elevated temperatures is presented, as well as the results of similar experiments by the authors.