. American engineer and railroad journal . e of high-speed steel. Smoke and Cinders from Briquets.— The reduction in cin-ders and sparks by briquetting depends on the quality of the coalas well as the density of the briquets. Certain coals, like theLoydell coal, produce a fine scale of coke in burning which isoften loosened from the surface of the briquet by the action ofthe draft and carried partially burnt through the stack. WithHartshorne and Arkansas coals the coking is much different incharacter, probably due to the higher ash content, and these cokescales are scarcely noticeable. The sam
. American engineer and railroad journal . e of high-speed steel. Smoke and Cinders from Briquets.— The reduction in cin-ders and sparks by briquetting depends on the quality of the coalas well as the density of the briquets. Certain coals, like theLoydell coal, produce a fine scale of coke in burning which isoften loosened from the surface of the briquet by the action ofthe draft and carried partially burnt through the stack. WithHartshorne and Arkansas coals the coking is much different incharacter, probably due to the higher ash content, and these cokescales are scarcely noticeable. The same lifference was noticed inburning briquets made from Pocahontas coal and bone coalpicked from the mine-ran coal. The latter was high in ashand the scales were greatly reduced. The results at Ahoonatesting plant show no appreciable reduction in the weigh!cinders from briquets, but a decided reduction in their calorificvalue.—C. T. Mulcolmson before The International 356 AMERICAN ENGINEER AND RAILROAD JOURNAL. September,
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectrailroadengineering
