. Transactions. f Stahl und Eisen, xxii., p. 1132-1134. % Oesterreichische Zeitschrift fuer Berg- und Huettenwesen, vol. 1., pp. 492-1494. I Thonindustrie-Zeitung, No. 45, p. 656 (April 16, 1903). Figs. 1 and 2 show that, above a, certain percentage (about90), the silica does not exercise so powerful a fluxing-action as itdoes when it is somewhat lower. This result is entirely in ac-cordance with the known facts concerning mixtures of kaolinand silica. Up to about 90-per cent, content of silica, thefusion-point decreases as the percentage of silica that point, however, the fusio
. Transactions. f Stahl und Eisen, xxii., p. 1132-1134. % Oesterreichische Zeitschrift fuer Berg- und Huettenwesen, vol. 1., pp. 492-1494. I Thonindustrie-Zeitung, No. 45, p. 656 (April 16, 1903). Figs. 1 and 2 show that, above a, certain percentage (about90), the silica does not exercise so powerful a fluxing-action as itdoes when it is somewhat lower. This result is entirely in ac-cordance with the known facts concerning mixtures of kaolinand silica. Up to about 90-per cent, content of silica, thefusion-point decreases as the percentage of silica that point, however, the fusion-point rises rapidly withincreasing percentage of silica. A further evidence of the powerful fluxing-action of silicamay be obtained by studying the curve of total fluxes, whichshows that Samples L and Y are nearly on a level with A; RE] i: ICTORINES* OF SOME AMERIC \N FIRE-BRICK. Bam pie l. howe^ er, contains 8 per cent, and Y 80 percent moreBilica, and,as would be expected from what baa been Bhown in Fio. ABCDEFHKIMNOP RSTUVWXYZ designation of analysis Graphic Representation of Composition and Properties of Foreign Fire-Brick. the case of American bricks, the fusion-point declines fromcone Xo. 36 to cones Xos. 34 and 29 respectively. With Fig. 2, as with Fig. 1, the fusibility-curve is a steadily 652 i;i:i KACToKINESS OF SOME AMERICAN FIRE-BRICK. descending one, and, Betting aside the silica-bricks, the 55-percent, line, as before, forms a fairly good mean for those claysexceeding cone No. 30 in fusibility. No mean curve,however, Fig. 3. fl 60 35 8*, _ 35 34- M 34 33 lie. 33 -32- 32 -3-1- SCJ, so30- 29/ L / i / < r *l \ 1 1 1SI Os PERCENTAGE r— A I F 55 ?—« -- >•——ir >- Nk- r *\ r 1 \ CD \ £45 340 cc£35 30 25 3 A eO? PEF CEN TAGE .; — t K v^ r UJ T NN /> N / > < / * 1 \ T—! J /) I—; \ 1/ S; oo \N • / Fl SIBI LITY CURVC / \ N. cc UJ -O- Ul —i 9 8 ,—-- I 7 Is JM OF FLUXtS /PERCENTAGE/ \ \ L !/ 1 \ \ \ 6O \ \ j s \ V \ z \ I
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Keywords: ., bo, bookcentury1800, bookdecade1870, booksubjectmineralindustries
