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Articles 1 - 5 of 5
Full-Text Articles in Engineering
Construction Of A Mechanically Agitated Autoclave, Stephen A. O'Hare
Construction Of A Mechanically Agitated Autoclave, Stephen A. O'Hare
Bachelors Theses and Reports, 1928 - 1970
Since the beginning of World War II a great deal of investigation has been done on the tungsten deposits in the western United States. These deposits are principally composed of scheelite. The scheelite deposits in the western United States are low grade, and disseminated. With the development of nonmetallic flotation methods these vast deposits of scheelite-bearing ores have become a major source of tungsten for the United States, as the high grade ore deposits have become practically depleted.
The Formation Of Zinc Ferrite From Zinc Sulfate And Ferric Oxide, Robert E. Morris
The Formation Of Zinc Ferrite From Zinc Sulfate And Ferric Oxide, Robert E. Morris
Bachelors Theses and Reports, 1928 - 1970
Samples of zinc sulfate and ferric oxide were roasted for periods of one, two and three hours at temperatures between 750° and 1000°C. The per cent zinc oxide combined, as zinc ferrite, was determined by dissolving the soluble zinc in a ammonium-ammonia chloride solution. Six samples were roasted at 750°C to determine the degree of decomposition of zinc sulfate to zinc oxide and sulfur trioxide.
A Study Of Certain Ferromagnetic Alloys In The System Copper-Manganese-Gallium, Harold L. Coolidge
A Study Of Certain Ferromagnetic Alloys In The System Copper-Manganese-Gallium, Harold L. Coolidge
Bachelors Theses and Reports, 1928 - 1970
Four alloys, with compositions near Cu2MnGa, were heat treated and magnetic measurements were obtained on a ferromagnetic torsion balance. The specimens were also examined microscopically to observe the structure.
Surface Reactivity Of Aliphatic Nitriles On Chalcopyrite And Sphalerite, Gary Mitton
Surface Reactivity Of Aliphatic Nitriles On Chalcopyrite And Sphalerite, Gary Mitton
Bachelors Theses and Reports, 1928 - 1970
This thesis reports an investigation concerning the adsorption of aliphatic nitriles by chalcopyrite, activated sphalerite, and unactivated sphalerite. The experimental evidence suggests that abstraction, chelation and re-adsorption may take place. On the basis of the experimental results, an equilibrium-type adsorption hypothesis is proposed.
Leaching, Purification And Precipitation Of Glen Scheelite Concentrates, Harold L. Coolidge
Leaching, Purification And Precipitation Of Glen Scheelite Concentrates, Harold L. Coolidge
Bachelors Theses and Reports, 1928 - 1970
The leaching, purification and precipitation of the Glen scheelite concentrates were performed to acquaint the student with the equipment and processes involved. The concentrates were obtained through the courtesy of the Minerals Engineering Company. Leaching was carried out in the high-pressure autoclave; whereas the purification and precipitation were carried out in laboratory beakers.