Clarke, Philip Seymour (1921) The extracting of germanium from crude oxide. Bachelor's thesis, California Institute of Technology. http://resolver.caltech.edu/CaltechETD:etd-02032005-111330
Since the discovery of germanium in certain American zinc ores, notably that of Joplin, Mo., several procedures have been suggested for the extraction of the germanium. These procedures, however, were simple distillations of the zinc ore with hydrochloric acid carried out in the laboratory on a small scale. The cost of the materials and the character of the reagents required obviously would cause such procedures to be impracticable on a large scale. In the present investigation, the reactions of germanium compounds and the actions of different reagents on the sample were observed with the view toward developing a method of extraction that would be applicable on and industrial scale. For this purpose, a ten-pound sample of germanium-bearing zinc oxide was furnished by the New Jersey Zinc Co. with the accompanying information that germanium was present in the sample to the extent of 0.25% GeO2.
|Item Type:||Thesis (Bachelor's thesis)|
|Degree Grantor:||California Institute of Technology|
|Division:||Chemistry and Chemical Engineering|
|Thesis Availability:||Public (worldwide access)|
|Defense Date:||1 January 1921|
|Default Usage Policy:||No commercial reproduction, distribution, display or performance rights in this work are provided.|
|Deposited By:||Imported from ETD-db|
|Deposited On:||07 Feb 2005|
|Last Modified:||18 Apr 2016 18:20|
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