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Articles 61 - 90 of 487
Full-Text Articles in Materials Science and Engineering
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)
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.
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.
Evaluation Of Commercial Titanium Alloys, Robert Loucks
Evaluation Of Commercial Titanium Alloys, Robert Loucks
Bachelors Theses and Reports, 1928 - 1970
Uses of titanium and its alloys range from aircraft structures to corrosion-resistance applications. The properties of the metal, including physical metallurgy, naturally dictate the folds of application. The interstitial elements, plus aluminum and tin, preferentially stabilize the alpha phase of titanium.
The Design And Construction Of A Laboratory Model Fluidized Bed Reactor, Godfrey Paul Howard
The Design And Construction Of A Laboratory Model Fluidized Bed Reactor, Godfrey Paul Howard
Bachelors Theses and Reports, 1928 - 1970
Fluidization has become a new and important unit operation in roasting, calcining, and drying ores because of the economy and ease of handling that it affords. Because of these reasons, and since the Montana School of Mines Metallurgical Laboratory does not have an operating model of a fluidized bed reactor, it was decided to design and construct an operating model for future research in the laboratory.
The Effect Of Strontium Sulfate Addition On The Lead Content Of Electrolytic Zinc, Arthur E. Morris
The Effect Of Strontium Sulfate Addition On The Lead Content Of Electrolytic Zinc, Arthur E. Morris
Bachelors Theses and Reports, 1928 - 1970
The production of electrolytic zinc involves the passage of an electric current through an aqueous solution of zinc sulfate and sulfuric acid. While all plants use procedures fundamentally the same, there are principal differences in the acidity of electrolyte, the zinc content of the electrolyte and the current density used.
Streaming Potential Studies, Andrew L. Mular
Streaming Potential Studies, Andrew L. Mular
Bachelors Theses and Reports, 1928 - 1970
The application of streaming potential to mineral-dressing is comparatively recent. Although colloidal chemists, for some time, have been familiar with streaming potential and the electrical double layer, A.M. Gaudin, Richards Professor of mineral-dressing, M.I.T, and D.W. Fuerstenau, his assistant, were the first to publish a series of experiments dealing directly with streaming potential applied to flotation. The apparatus described in this thesis was used by Fuerstenau and was developed by him especially for this type of investigation.
Synthetic Manganese Dioxide Production, Russell Marion Dugdale
Synthetic Manganese Dioxide Production, Russell Marion Dugdale
Bachelors Theses and Reports, 1928 - 1970
Before World War I the United States procured all of its battery grade manganese dioxide from the Caucasus. Even at this time some experimentation was under way to produce this depolarizing substance synthetically and the experiments were successful to a large extent so that when the ore from the Caucasus was cut off, the necessary material was produced synthetically. The shortage was relieved when a deposit of manganese dioxide was discovered in Montana, which was superior to the ore from the Caucasus.
Production Of Iron, Chromium And Nickel By Amalgam Metallurgy, Richard Earl Westerman
Production Of Iron, Chromium And Nickel By Amalgam Metallurgy, Richard Earl Westerman
Bachelors Theses and Reports, 1928 - 1970
Certain properties of mercury, such as its affinity for other metals, its high hydrogen overpotential, and its unique liquid state, have made its use desirable for many applications in the fields of physical and process metallurgy. Though considerable research has been done on mercury amalgams, only comparatively recently has it been shown that mercury amalgams follow certain definite laws with regard to phase exchange phenomena and electrochemical properties. It is now possible to predict, with considerable accuracy, the results of amalgam reactions.
The Zone-Refining Of A Lead-Bismuth Alloy, Edward James Westerman
The Zone-Refining Of A Lead-Bismuth Alloy, Edward James Westerman
Bachelors Theses and Reports, 1928 - 1970
Zone-refining, the purification of a metallic ingot resulting from the passing over its length of a comparatively short molten zone, has been found useful in the purification of several metallic elements. The impurities present in an elemental metal are often more soluble in the molten zone than in the solid material, and are carried to one end of the bar in the molten zone. This molten-zone movement can be repeated any number of times on a metallic ingot, with the zone always being moved in the same direction.
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.
United States Gypsum's Heath Plant, Harold L. Coolidge
United States Gypsum's Heath Plant, Harold L. Coolidge
Bachelors Theses and Reports, 1928 - 1970
The United States Gypsum Company's Heath plant, which is located at Heath, Montana, is one of forty-six diversified production facilities for the development and production of gypsum products. The Heath plant is located about twelve miles southeast of Lewistown, Montana, and consists of a mine, a mill and a boardplant. The Heath plant was built in 1925 by the Northwestern Gypsum Company.
Zinc Department Anaconda Reduction Works, Robert E. Morris
Zinc Department Anaconda Reduction Works, Robert E. Morris
Bachelors Theses and Reports, 1928 - 1970
The electrolytic zinc department of the Anaconda Reduction Works consists of five divisions, each responsible for one phase in the preparation of electrolytic zinc. These divisions are: (1) The zinc concentrator which produces a high-zinc, low-lead concentrate for further treatment at Anaconda, and a low-zinc, high-lead concentrate which is shipped to East Helena for further treatment. (2) The roasting division wherein the concentrate is roasted to oxides and sulfates. (3) The leaching division which (a) leaches the roasted concentrate to dissolve the zinc, and (b) purifies the leached solution. (4) The electrolytic division which produces pure zinc cathodes by electrowinning …
The Design And Construction Of An Electrolytic Cell For Aluminum Reduction, Thomas H. Melrose
The Design And Construction Of An Electrolytic Cell For Aluminum Reduction, Thomas H. Melrose
Bachelors Theses and Reports, 1928 - 1970
The purpose of this investigation was to design and construct a laboratory size electrolytic cell in which to reduce alumina, using the same basic materials that are used in a commercial size cell. The cell was designed to have a capacity of approximately 100 grams of metallic aluminum produced every 8 hours. The cell was constructed so it could be operated continuously.
Investigation Of Inclusions In Armco Ingot Iron, Edwin J. Duncan
Investigation Of Inclusions In Armco Ingot Iron, Edwin J. Duncan
Bachelors Theses and Reports, 1928 - 1970
Various chemical and electrolytic separation methods were investigated in an attempt to separate the inclusions in Armco ingot iron. Residues obtained were X-rayed for identification purposes. The microstructures of this iron were studied with the object of determining the relative sizes, locations, and possible compositions of the inclusions.
Effect Of Recovery On The Recrystallized Grain-Size Of High Purity Aluminum, Rodney L. Helterline
Effect Of Recovery On The Recrystallized Grain-Size Of High Purity Aluminum, Rodney L. Helterline
Bachelors Theses and Reports, 1928 - 1970
When a cold-worked metal is annealed, it’s physical properties hange as a result of a new grain structure. The annealing treatment is divided into three stages according to the changes that occur in the distorted metal: (1) recovery, (2) recrystallization, and (3) grain growth.
Application Of Amalgam Metallurgy To The Extraction Of Indium, John Zelem
Application Of Amalgam Metallurgy To The Extraction Of Indium, John Zelem
Bachelors Theses and Reports, 1928 - 1970
In view of the greater demand for indium with the progressive development of the metal, simpler methods of recovery are necessary. The author here hopes to apply mercury in the metallurgy of indium in an effort to find a simpler method of extraction.
Design And Calibration Of A Ferromagnetic Torsion Balance, Oliver W. Moen
Design And Calibration Of A Ferromagnetic Torsion Balance, Oliver W. Moen
Bachelors Theses and Reports, 1928 - 1970
Magnetic materials can be divided into three major groups; diamagnetic, paramagnetic and ferromagnetic. From a magnetic point of view, the ferromagnetic are the most interesting. Ferromagnetic materials include the elements iron, nickel, cobalt, certain of the alloys of these elements and a group of alloys first studied by Huesler. These latter are ferromagnetic largely because of the presence of manganese in special combination with the other non-ferrous elements.
Polarography Of Indium, John Jackson
Polarography Of Indium, John Jackson
Bachelors Theses and Reports, 1928 - 1970
The purpose of this thesis is to study the various aspects of the polarography of indium. The eventual goal would be to develop a method of analyzing indium in unknowns. The investigation is approached by studying the indium ions in various electrolytes and in various concentrations.
Geology Of The Ragged Point Oil Field Musselshell County, Montana, David M. Amos
Geology Of The Ragged Point Oil Field Musselshell County, Montana, David M. Amos
Bachelors Theses and Reports, 1928 - 1970
The Ragged Point oil field is located in Northwest Musselshell County, in the Lake Basin field of central Montana, and on the western border of the Great Plains region. The surface topography is that of a plain marked by erosion and moderate folding. The stratigraphy of central Montana shows periodic marine invasions from the Cordilleran trough, with normal marine limestones interbedded with sandstone sand shales. These sediments are over 12,000 feet thick, with the Cretaceous Eagle and Colorado formations exposed at the surface on the Ragged Point anticline. Undifferentiated Cambrian limestones and shales are the oldest rocks encountered in drilling.
Beneficiation Of Scheelite Ore From The Potosi Tungsten Mining District, James A. Ndulue
Beneficiation Of Scheelite Ore From The Potosi Tungsten Mining District, James A. Ndulue
Bachelors Theses and Reports, 1928 - 1970
The now increasing importance of tungsten as a metal with desirable properties in high strength and high temperature resisting alloy steels, coupled with the recent discoveries of low-grade tungsten ore deposits in Montana, has spurred a search for suitable and economical methods of treating tungsten ores of the State. This search has been conducted on a variety of tungsten ores and the present work is rather an aspect of the whole tungsten beneficiation problem in Montana.
The Application Of Electric Energy To The Metallurgy Plants In Montana, Edwin J. Duncan
The Application Of Electric Energy To The Metallurgy Plants In Montana, Edwin J. Duncan
Bachelors Theses and Reports, 1928 - 1970
Since the year 1800, metallurgy has been affiliated with electricity. In fact, the two industries have grown side by side, being naturally dependent upon each other and having a parallel growth.
The Construction And Operation Of A Universal Specimen Mount With Protective Lead Shield For The Purpose Of Determining Pole Figures Using The Schulz-Decker Transmission Technique, Richard L. Fausner
The Construction And Operation Of A Universal Specimen Mount With Protective Lead Shield For The Purpose Of Determining Pole Figures Using The Schulz-Decker Transmission Technique, Richard L. Fausner
Bachelors Theses and Reports, 1928 - 1970
It was the purpose of this study to construct a universal mount, to construct a protective lead shield, to operate the instrument, and to provide a pole figure using the transmission method of Schulz and Decker. There are at present several lengthy x-ray methods of determining the grain orientation of metals. These methods are mainly photographic. In order to provide a rapid means of obtaining the necessary information concerning the grain orientation of a metal, a universal mount was constructed.
The Lucky Hit Mine Of Jefferson County, Montana, Bruce B. Goddard
The Lucky Hit Mine Of Jefferson County, Montana, Bruce B. Goddard
Bachelors Theses and Reports, 1928 - 1970
Many mines in the Cardwell Mining District have been more or less steady producers of gold, silver, lead and zinc since 18SO. The area first came into prominence with the discovery of gold at the Mayflower Mine in 1896. Soon after the Mayflower discovery, many claims were located in the nearby Saint Paul Gulch area, northeast of Whitehall. The Lucky Hit Mine is located in Saint Paul Gulch area of the Cardwell Mining District.
Nonmetallic Mineral Resources Of Montana (Except Fuels), F. L. Rytlewski
Nonmetallic Mineral Resources Of Montana (Except Fuels), F. L. Rytlewski
Bachelors Theses and Reports, 1928 - 1970
Essentially, the paper is composed of seven parts, each of which concerns a group of related nonmetallic minerals such as ceramic materials, gemstones, or abrasives. Following the data pertaining to the minerals of each group are index mars locating the major mineral deposits which are known to date. Production and reserve figures are listed by tables in cases where such information is available.
The Flotation Concentration Of A Complex Low-Grade Lead Zinc Ore, Edward James Fong
The Flotation Concentration Of A Complex Low-Grade Lead Zinc Ore, Edward James Fong
Bachelors Theses and Reports, 1928 - 1970
This report is concerned primarily with the beneficiation of a low-grade complex lead-zinc ore. The depletion of high grade veins has caused the mineral engineer to seek deposits deeper in the earth's crust or to find lower grade deposits. The other alternative has placed more research problems on Mineral Dressing Engineers in particularly the iron, copper, lead and zinc fields.