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THE ESTIMATION OF THE ALUMINA CONTENT OF DIASPORE AND BURLEY CLAY FROM THE SILICA CONTENT 1
Author(s) -
Holmes M. E.,
Keller W. D.
Publication year - 1932
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.1151-2916.1932.tb13880.x
Subject(s) - diaspore (botany) , content (measure theory) , mineralogy , chemistry , mathematics , biological dispersal , population , demography , seed dispersal , sociology , mathematical analysis
ABSTRACT The formula, % Al 2 O 5 = 0.85 ×% SiO 2 + 0.85 (100 – 2.15 ×% SiO 2 ) – 5.1, is presented for use in estimating the per cent of All08 of diaspore and burley clays. The silica determination is quick enough and cheap enough to make control testing of carload shipments practicable. The method applies to the lowest‐grade burley as well as the highest‐grade diaspore. The results of 381 actual analyses are presented showing that the method is accurate to 1% in 65% of the tests and to 2%, in 89% of the tests.