Aluminium : its history, occurrence, properties, metallurgy and applications, including its alloys / by Joseph W. Richards.

  • Joseph William Richards
Date:
1887
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Licence: Public Domain Mark

Credit: Aluminium : its history, occurrence, properties, metallurgy and applications, including its alloys / by Joseph W. Richards. Source: Wellcome Collection.

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    three globules of aluminium, tolerably large con- sidering the size of the experiment, were obtained, along with a large number of very small ones. The larger ones were melted together under KCl. Some experiments made in iron crucibles were not attended with the same success as those of Rose, no globules of any considerable size remained in the melted fluorides; the metal seemed to alloy on the sides of the crucible, which acquired a color like zinc. It is possible that this ditference may have arisen from using a higher temperature than Rose, as we made these experiments in a furnace, not over the blowpipe. Porcelain and clay cruci- bles were also tried, but laid aside after a few ex- periments, owing to the action of the fluorides upon them, which iu most cases was sufficient to perforate them completely.” The above p)apers, Rose’s and Dick’s, contain all the published researches with cryolite until Deville’s attention was turned towards it. lie then took up the subject with his accustomed thoroughness. The following pages are taken .from his ‘ De 1’Alu- minium,’ the subject not being given in its entirety, but only the most important points. He published the first account of these researches in ‘ Ann. de Chem. et de Phys.’ [3], xlvi. 451 “I have repeated and confirmed all the experi- ments of Dr. Percy and II. Rose, using the specimens of cryolite which I obtained from London through the kindness of MM. Rose and Hofmann. I have.
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