Aluminum Its History Occurrence Properties Metallurgy And Application Inclu
Aluminum Its History Occurrence Properties Metallurgy And Application Inclu
Joseph William Richards
The book Aluminum Its History Occurrence Properties Metallurgy And Application Inclu was written by author Joseph William Richards Here you can read free online of Aluminum Its History Occurrence Properties Metallurgy And Application Inclu book, rate and share your impressions in comments. If you don't know what to write, just answer the question: Why is Aluminum Its History Occurrence Properties Metallurgy And Application Inclu a good or bad book?
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. . . . 75 to 80 " The double chloride ought to be melted and heated almost to low red heat at the moment it is em- ployed, the NaCl calcined and at a red heat or melted, and the CaF 2 pulverized and well dried. The double chloride, NaCl and CaF 2 are mixed and alternated in layers in the crucible with sodium. The top layer is of the mixture, and the cover is XaCl. Heat gently, at first, until the reaction ends, and then to a heat about sufficient to melt silver. The crucible, or at least that ...part of it which con- tains the mixture, ought to be of a uniform red tint, and the material perfectly liquid. It is stirred a long time and cast on a well-dried, chalked plate. There flows out first a very limpid liquid, colorless and very fluid, then a gray material, a little more pasty, which contains aluminium in little grains, 11 122 ALUMINIUM. and is set aside, and finally a button with small, metallic masses which of themselves ought to weigh 20 grms. If the operation has succeeded well. On pulverizing and sieving the gray slag, 5 or 6 grms.
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