Journal . E 2 3-24 THE JOUUNAL OF THK SOCIETY OJ; OHEMIOAIj INDUSTRY. [April so. ohiirpc iitthc rvliiiiUr lo be L?u^ilv ;nMl iiitioducedami removed; secondly, the formation of lime dust isprevented : thirdly, it prevents the hydrate of lime fromabsorbinjj water of eondensation, as the steam fonned inconseiiuence of the process of hydration can only condenseon the sides of the cylinder A. The water collects at thebottom, and is run off through a tap from time to time. Inpractice the work is done as follows : Afler introducing acharge of lime into the cylinder, the cover H is c
Journal . E 2 3-24 THE JOUUNAL OF THK SOCIETY OJ; OHEMIOAIj INDUSTRY. [April so. ohiirpc iitthc rvliiiiUr lo be L?u^ilv ;nMl iiitioducedami removed; secondly, the formation of lime dust isprevented : thirdly, it prevents the hydrate of lime fromabsorbinjj water of eondensation, as the steam fonned inconseiiuence of the process of hydration can only condenseon the sides of the cylinder A. The water collects at thebottom, and is run off through a tap from time to time. Inpractice the work is done as follows : Afler introducing acharge of lime into the cylinder, the cover H is closed tightand a measured quantity of water is run (m the is evolved and the pressure in the cyliudir will riseto four or five atniosjiheres. The hydnited lime is allowedto remain under this jiressure for about half an hour. InOlder to prevent the condensation of steam, the cylinder Ais slightly heated from outside. After half an hour thesteam is allowed to escape and the carriage removed fromthe cylinder, when its contents will be found pulverised andperfectly dry.—S
Size: 1956px × 1277px
Photo credit: © The Reading Room / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1800, bookdecade1880, booksubjectchemist, bookyear1882
