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Articles 1 - 12 of 12
Full-Text Articles in Metallurgy
The East Helena Plant Of The American Smelting And Refining Company, Raymond W. White
The East Helena Plant Of The American Smelting And Refining Company, Raymond W. White
Bachelors Theses and Reports, 1928 - 1970
The East Helena plant of the American Smelting and Refining Company is a custom lead smelter. The chief product of the smelter is lead bullion, although by-products such as matte, speiss, cadmium-rich fumes, and zinc-rich slag are also produced. While the smelter is old, many of the methods used are new, some of which have been developed at the plant.
The Heat Treatment Of An Eight Percent Manganese-Titanium Alloy, Robert Alden Loucks
The Heat Treatment Of An Eight Percent Manganese-Titanium Alloy, Robert Alden Loucks
Bachelors Theses and Reports, 1928 - 1970
The subject of this particular investigation, manganese titanium alloy, has a sufficient amount of manganese present to retain beta upon quenching from the alpha plus beta or beta ranges. Thus, improvement of properties of this alloy is possible by selective heat treatments.
The Design And Construction Of A High-Temperature X-Ray Sample Holder For Use With The Norelco Diffractometer, Jerry F. Koon
The Design And Construction Of A High-Temperature X-Ray Sample Holder For Use With The Norelco Diffractometer, Jerry F. Koon
Bachelors Theses and Reports, 1928 - 1970
The purpose of this paper is to describe the design and construction of a sample-holder for high-temperature x-ray diffraction work. This sample-holder will be used in conjunction with a Norelco Diffractometer. Design of this attachment is such that it will meet certain limitations, which will be presented in detail, offered by the diffractometer.
The Effect Of Antimony And Cobalt On The Current Efficiency And The Grain Orientation Of Deposits During The Electrolysis Of A Zinc Sulfate Solution, Samuel A. Worcester
The Effect Of Antimony And Cobalt On The Current Efficiency And The Grain Orientation Of Deposits During The Electrolysis Of A Zinc Sulfate Solution, Samuel A. Worcester
Bachelors Theses and Reports, 1928 - 1970
Preparation of solutions and apparatus and experimental procedure was described. The effect of antimony and cobalt in a zinc sulfate electrolyte upon current efficiency with increasing time was determined by the hydrogen evolution method. The degree of preferred orientation of grains in the electrodeposits was determined by the reflection method of X-ray diffraction.
The Beneficiation Of A Low-Grade Uranium Ore, Frank P. Howald
The Beneficiation Of A Low-Grade Uranium Ore, Frank P. Howald
Bachelors Theses and Reports, 1928 - 1970
The uranium in the Sponsor's Ore was proven amenable to the standard hydrometallurgical processes-- the acid leach and the carbonate leach. From an economical standpoint, the results of the heap-leaching and flotation studies were not favorable because of low recoveries. The possibility of employing an emulsion-induced selective flocculation flotation procedure still exists.
Artificial Rhodonite: It's Synthesis And X-Ray Diffraction Powder Pattern, Frank E. Jeniker
Artificial Rhodonite: It's Synthesis And X-Ray Diffraction Powder Pattern, Frank E. Jeniker
Bachelors Theses and Reports, 1928 - 1970
This report presents the investigation of three methods of synthesizing artificial rhodonite; fusion of silica and manganese dioxide, prolonged sintering of the compact of manganous carbonate and silica at below liquidus temperatures, and the precipitation by reaction of salts in an aqueous solution followed by sintering. In each case the rhodonitic product was of less than desired purity, containing varying amounts of silica, tephroite, and higher valence oxidized manganese forms, as well as aluminum.
The Vacuum Desulphurization Of Copper Mattes, Robert L. Trevison
The Vacuum Desulphurization Of Copper Mattes, Robert L. Trevison
Bachelors Theses and Reports, 1928 - 1970
The first application of vacuum techniques to the metallurgical industry was made in the early part of this century by Rohn, a German, who developed vacuum technology to a production status in the specialty metals business. Although extensive use of vacuum processing technology was made in the lamp and electrical industries, the methods used were considered to be impractical up to about ten years ago even though remarkable improvements were made during World War II. Wartime demands for magnesium and for uranium which necessitated the use of a high vacuum in their production led to the perfection of mechanical pumps, …
Flotation Of Artillery Peak Manganese, Joseph W. Town
Flotation Of Artillery Peak Manganese, Joseph W. Town
Bachelors Theses and Reports, 1928 - 1970
The concentration of low-grade manganese ore from Artillery Peak, Arizona, was studied. Flotation with various emulsions failed to yield concentrations of commercial grade, although manganese recoveries of over 90 per cent were obtained.
Refining Of Cadmium Metal By Amalgam Metallurgy, Donald Edward Macknight
Refining Of Cadmium Metal By Amalgam Metallurgy, Donald Edward Macknight
Bachelors Theses and Reports, 1928 - 1970
It was the purpose of this investigation to produce copper-free-cadmium from commercially pure cadmium metal employing the principles of electrometallurgy.
An Investigation Into Salt-Bath Heat Treatment For Titanium, Robert Fred Bechtold
An Investigation Into Salt-Bath Heat Treatment For Titanium, Robert Fred Bechtold
Bachelors Theses and Reports, 1928 - 1970
Titanium, although possessing excellent corrosion resistance in some media, is severely attacked by molten inorganic salts such as those employed in heat-treating baths. Since titanium undergoes allotropic changes, many of its alloys are amendable to heat treatment. The purpose of this study was to discover a salt (or other suitable medium) in which titanium alloys can be successfully heat treated without fear of corrosion.
A Study Of The Possible Use Of Aluminum As A Reducing Agent For Manganese Chloride, William J. Borzick
A Study Of The Possible Use Of Aluminum As A Reducing Agent For Manganese Chloride, William J. Borzick
Bachelors Theses and Reports, 1928 - 1970
Aluminium has been used as a reducing agent for various reactions, the best known of which is the thermit reaction, which is defined in the "Metals Handbook" as; "An exothermic, self-propagating process in which finely divided aluminum powder is used to reduce metal oxides to free metals by direct oxidation of aluminum to aluminum oxide, with accompanying reduction of the less stable metal oxide." (1-15)
The Great Falls Zinc Plant, Donald Edward Macknight
The Great Falls Zinc Plant, Donald Edward Macknight
Bachelors Theses and Reports, 1928 - 1970
This paper will be confined to the processes by which zinc is recovered. In discussing the unit processes and operations, I shall first give a general view of the process and why it is necessary. Next, I shall analyze the process in terms of metallurgy and thermodynamics, showing by calculation, where necessary, certain facts that could not be suitably explained without a knowledge of the fundamental principles of extractive metallurgy.