. Journal. urrent to its normal condition indicatedthe completion of the process. During tic cooling, alarge quantity of metallic aluminium was forced out fromthe surface of the carbide. When the in:i« was cooledout of contact with furnace gases and air. the exudedmetal was found to contain 99-9 per cent, of aluminium,showing that aluminium carbide is insoluble in metallicaluminium. The yield of aluminium was greatlydiminished by working in an atmosphere oiand the change in weight of the crucible and its with the formation of a large quantity of that the carbid
. Journal. urrent to its normal condition indicatedthe completion of the process. During tic cooling, alarge quantity of metallic aluminium was forced out fromthe surface of the carbide. When the in:i« was cooledout of contact with furnace gases and air. the exudedmetal was found to contain 99-9 per cent, of aluminium,showing that aluminium carbide is insoluble in metallicaluminium. The yield of aluminium was greatlydiminished by working in an atmosphere oiand the change in weight of the crucible and its with the formation of a large quantity of that the carbide is formed chiefly, and probablyentirely, by the action on the aluminium of carbonmonoxide derived from the carbon dioxide evolved fromthe limestone blocks of the furnace. 3C0 + 6A1=A1.,03 + AI4C3. The product obtained contained, on theaverage, aluminium carbide. 30; alumina. 25 : carbon, 2:and aluminium, 43 per cent. After treatment in the coldwith strong caustic soda solution, a product was obtained L^9. Plan (section a b). lillll I I 0 5 10 cm. Fio, 1 TtZ3F * i 1721:
Size: 1453px × 1720px
Photo credit: © The Reading Room / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1800, bookdecade1880, booksubjectchemist, bookyear1882
