熔鉱炉煉瓦製造を目的とする米国産粘土の性状

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Eight kinds of American refractory clays, occured in Missouri and Kentucky districts were studied in laboratory and in actual manufacturing course for the purpose of making blast furnace brick.The results are summarizied as follows;1) By chemical studies; Missouri flint clay is the purest (high alumina and low iron content) and Missouri semi-flint clay has nearly the same composition as Kentucky flint clay. The soft clays, both from Missouri and Kentucky, have more silica than the flint clay owing to the presence of impurities.2) By mineralogical studies (X-ray analyses); -Missouri flint clay is pure Kaolinite, but Kentucky flint clay and Missouri semi-flint clay consist of mainly low grade kaolinite minerals with small amount of quartz. The soft clays consist of kaolinite minerals and considerable amount of quartz.3) By physical studies (thermal expansion, thermo-balance, viscosity, and change porosity or density after firing); -these clays are classified in three groups, i.e. (i) Missouri flint clay, (ii) Kentucky flint and Missouri semi-flint clay, and (iii) soft clay.4) Blast furnace bricks, both for bottom and stack linings, were also made from these clays in the industrial plant, and their characteristics were compared with that of other American and German Blast furnace bricks.
社団法人日本セラミックス協会の論文
1957-12-01