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Effect Of Recovery On The Recrystallized Grain-Size Of High Purity Aluminum, Rodney L. Helterline Jun 1954

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.


The Application Of Electric Energy To The Metallurgy Plants In Montana, Edwin J. Duncan Sep 1953

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 Jun 1953

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.


Host Rocks And Gangue Minerals Associated With Copper Deposits In Plutonic Igneous Rocks, Richard D. Montgomery May 1953

Host Rocks And Gangue Minerals Associated With Copper Deposits In Plutonic Igneous Rocks, Richard D. Montgomery

Bachelors Theses and Reports, 1928 - 1970

All of the information on the various districts has come directly from published reports. The investigation was suggested by Mr. Forbes Robertson. The geographical extent of the deposits was confined to the western United States. Many of these deposits are of the disseminated porphyry type. A few of the de­posits, such as at Butte, Montana, were of the fissure vein type.


The Effect Of Manganese On The Age Hardening Of Aluminum-Copper Alloys, Keith P. Burgess May 1953

The Effect Of Manganese On The Age Hardening Of Aluminum-Copper Alloys, Keith P. Burgess

Bachelors Theses and Reports, 1928 - 1970

It is known that age-hardening occurs in alloys of the solid solution type containing a hardening constituent, of a metal or metallic compound which is more soluble in the solvent phase at higher tempertures than at lower temperatures.


The Benefication Of A Low-Grade, Montana Scheelite Ore, Walter G. Parker May 1953

The Benefication Of A Low-Grade, Montana Scheelite Ore, Walter G. Parker

Bachelors Theses and Reports, 1928 - 1970

The increasing importance of tungsten as an industrial metal and the recent discoveries of extensive deposits of low-grade tungsten ores in Montana led to the investigation which is reported in this paper. The purpose of this investigation was to determine if a saleable concentrate could be obtained from one of these low-grade, Montana scheelite ores.


Variation Of Induction And Hysteresis Curves For The Heusler Alloy, Cu2mna1, Ford W. Knight May 1952

Variation Of Induction And Hysteresis Curves For The Heusler Alloy, Cu2mna1, Ford W. Knight

Bachelors Theses and Reports, 1928 - 1970

The purpose of this investigation is to determine the fundamental magnetic characteristics of induction and hysteresis, for the alloy Cu2MnAl. This is a ternary, ferromagnetic Heusler alloy. The problem is not only to determine these characteristics for the alloy as-cast but to heat treat it and observe the manner in which different heat treat­ments affect these two fundamental magnetic characteristics.


The Effect Of Ferric Iron Upon The Current Efficiency And The Deposition Of Copper In The Electrowinning Of Copper From Copper Sulphate Solutions, James L. Owings May 1952

The Effect Of Ferric Iron Upon The Current Efficiency And The Deposition Of Copper In The Electrowinning Of Copper From Copper Sulphate Solutions, James L. Owings

Bachelors Theses and Reports, 1928 - 1970

In the hydrometallurgy of copper, probably the most widely used method for the precipitation of copper is by electrolysis using insoluble anodes. The process is similar in many respects to the electrolytic refining of copper; one of the main differences is the use of insoluble anodes in electrowinning as compared to the use of impure copper anodes in electrorefining. Impurities, however, are common to both processes. The nature of these impurities differ and the problem of purifying the electrolyte is also different.


The Effect Of Iron Upon The Electrowinning Of Copper With An Amalgam Electrode, John A. Alexander May 1952

The Effect Of Iron Upon The Electrowinning Of Copper With An Amalgam Electrode, John A. Alexander

Bachelors Theses and Reports, 1928 - 1970

Current commercial use of the mercury cathode cell is limited to two types of electrolytic sodium cells-­the Castner cell and the Sorenson cell. Mercury as a cathode medium has also found application in polarographic analysis, a method of a simultaneous quantitative and qualitative analysis of several metal components of solution.


An Investigation Of The Hardening Properties Of Some Alpha Copper Indium Alloys, Charles W. Mcpherson May 1952

An Investigation Of The Hardening Properties Of Some Alpha Copper Indium Alloys, Charles W. Mcpherson

Bachelors Theses and Reports, 1928 - 1970

Precipitation hardening alloys has assumed a major role in modern day development of alloys. In his search for stronger, harder materials, the metallurgist has often been limited by the cost of metals which posses the needed properties.


Vacuum Distillation Of Zinc And Cadmium From Zinc Leach Purification Cake, Stiles R. Slosson May 1951

Vacuum Distillation Of Zinc And Cadmium From Zinc Leach Purification Cake, Stiles R. Slosson

Bachelors Theses and Reports, 1928 - 1970

The term "vacuum distillation" is used to des­cribe the process employed when certain elements are separated either from their mother compounds or from one another by distilling them under reduced atmos­pheric pressure.


Ferromagnetic Alloys In The System Cu-Mn-Zn, W. Michael Yim May 1951

Ferromagnetic Alloys In The System Cu-Mn-Zn, W. Michael Yim

Bachelors Theses and Reports, 1928 - 1970

The purpose of this investigation is to determine whether ferromagnetic alloys exist in the ternary sys­tem Cu-Mn-Zn analogous to the other Heusler alloys. The work in this thesis is a preliminary investi­gation on these alloys using a common metallographic re­search technique and augmented with X-ray methods.


Polarographic Analysis Applied To Metallurgical Solutions And Products, Donald W. Johnson May 1951

Polarographic Analysis Applied To Metallurgical Solutions And Products, Donald W. Johnson

Bachelors Theses and Reports, 1928 - 1970

The polarograph has been applied to a large number of chemical and metallurgical analyses, and is especially applicable to solution control analysis and to the deter­mination of minute quantities of ions in the presence of large amounts of other ions.


The Electrolytic Purification Of An Impure Cadmium Sulfate Solution With A Cell Utilizing A Mercury Cathode And A Lead Anode, W. D. Mcmaster May 1951

The Electrolytic Purification Of An Impure Cadmium Sulfate Solution With A Cell Utilizing A Mercury Cathode And A Lead Anode, W. D. Mcmaster

Bachelors Theses and Reports, 1928 - 1970

Cadmium is produced solely as a by-product and all cadmium of commerce is obtained from zinc ores. It is a rare occurrence when zinc deposits are found which do not contain some cadmium.


Mineralization Of The Bonanza Mine, H. M. Callaway Jun 1950

Mineralization Of The Bonanza Mine, H. M. Callaway

Bachelors Theses and Reports, 1928 - 1970

The Bonanza mine of the Emery mining district in Powell County is on the largest veins in the area, and is developed to a depth of 680 feet by an incline shaft following the dip of the structure. Sulfide ores carrying gold and silver values are mined throughout the area which is easily accessible by road from Deerlodge, Montana, ten miles west of the district.


An Investigation Into The Precipitation Of Copper From Mine Water By Cupric Copper Reduction, And The Subsequent Precipitation Of Copper As Cuprous Chloride, Jack T. Gentry Apr 1950

An Investigation Into The Precipitation Of Copper From Mine Water By Cupric Copper Reduction, And The Subsequent Precipitation Of Copper As Cuprous Chloride, Jack T. Gentry

Bachelors Theses and Reports, 1928 - 1970

The objective of this thesis is to determine the possibility of applying a different method to the re­covery of the copper dissolved in the Butte mine waters, and thereby precipitate a purer cement copper with greater efficiency and less iron consumption.


A Study Of The Differential Seperation Of Galena And Sphalerite, Wilfred E. Nagel Jun 1949

A Study Of The Differential Seperation Of Galena And Sphalerite, Wilfred E. Nagel

Bachelors Theses and Reports, 1928 - 1970

The smelting of complex lead ores is a difficult operation, especially when they contain considerable amounts of iron and zinc. When these ores are smelted, all of the zinc, which is valuable and well worth recovering, goes into the slag. With the advent of the flotation processes, and the ability of these processes to concentrate the lead and zinc minerals into separate products, the smelting of complex lead ores was to a great extent simplified.


A Mineral Dressing And Economic Study Of A Complex Arsenical Ore, Luigi D. Piana May 1949

A Mineral Dressing And Economic Study Of A Complex Arsenical Ore, Luigi D. Piana

Bachelors Theses and Reports, 1928 - 1970

The factors that influence the choice of a method for treat­ment of an ore comprise the technical and economic limitations and advantages, derived in detail and balanced according to the exigencies of the particular situation.


Separation Of Cadmium From Zinc In The Purification Step Of The Leaching Cycle, L. C. Powell May 1949

Separation Of Cadmium From Zinc In The Purification Step Of The Leaching Cycle, L. C. Powell

Bachelors Theses and Reports, 1928 - 1970

The purpose of this investigation is to determine the effect of the factors listed previously by conducting a series of tests that will indicate the ex­tent to which the purification is influenced by time, temperature, zinc oust size, zinc dust quantity, iron concentration, two stage precipitation, and aeration.


An Investigation Of The Precipitation Of Cobalt With Zinc Dust, Lyle Hallberg May 1949

An Investigation Of The Precipitation Of Cobalt With Zinc Dust, Lyle Hallberg

Bachelors Theses and Reports, 1928 - 1970

Cobalt, as well as copper, cadmium, and other impurities, is removed by selective precipitation with zinc during the zinc electrolyte purification cycle, and the purification residue may be treated by a Cadmium Plant for the recovery of cadmium.


Application Of The Electric Furnace To The Melting Of Cathode Copper At The Tacoma Smelter, Alvin H. Nelson May 1949

Application Of The Electric Furnace To The Melting Of Cathode Copper At The Tacoma Smelter, Alvin H. Nelson

Bachelors Theses and Reports, 1928 - 1970

In the field of copper metallurgy, the major chang­es effected in the original metallurgical scheme have been based largely upon the lowering in grade of copper ores, and the more particular demands of the fabricators of the metal. The former trend fostered the development of mineral beneficiation, which in turn caused the con­version from blast furnace to reverberatory furnace smelting.


The Characteristics Of The Electrolyte In The Series System Of Electrolytic Copper Refining, Carl W. Howald Jr. May 1949

The Characteristics Of The Electrolyte In The Series System Of Electrolytic Copper Refining, Carl W. Howald Jr.

Bachelors Theses and Reports, 1928 - 1970

Almost everyone is familiar with the tremendous importance of copper in our everyday life. One of the pro­perties of copper which determines its great usefulness to mankind is its electrical conductivity. This property alone has more to do with the prominence of copper among useful metals then does any other.


The Casting Of Anodes For The Series System Of Electrolytic Copper Refining, Robert R. Kupfer May 1949

The Casting Of Anodes For The Series System Of Electrolytic Copper Refining, Robert R. Kupfer

Bachelors Theses and Reports, 1928 - 1970

The electrolytic refining process, while usually considered an auxiliary process used in conjunction with pyrometallurgical extraction, deserves a special niche in the complex metallurgy of copper. The development of electrolytic copper refining, for example, is largely responsible for the prominence of the electrical industry. Conversely, it could be stated that the electrical industry played an important part in the development of the copper industry.


Aluminum - Bronze Compacts And Their Possible Use As A Bearing Material, Donald J. Mcmaster May 1949

Aluminum - Bronze Compacts And Their Possible Use As A Bearing Material, Donald J. Mcmaster

Bachelors Theses and Reports, 1928 - 1970

In the modern aspect of powder metallurgy, the first use of a sintering process was in making filaments for incandescent electric lamps.In the short while from the day of Edison to the pres­ent, the science of working with metal powders has advanced by leaps and bounds.


Construction And Operation Of A Laboaratory Size Thum Cell, Raymond Dugdale May 1949

Construction And Operation Of A Laboaratory Size Thum Cell, Raymond Dugdale

Bachelors Theses and Reports, 1928 - 1970

Electrolytic silver refining was not perfected until the end of the nineteenth century. During the process of development, two systems of silver refining have come into prominence: the Moebius and the Thum types.


A Study Of The Transformation Of A Twenty-Eight Per Cent Tin Bronze, Perry A. Boukind May 1949

A Study Of The Transformation Of A Twenty-Eight Per Cent Tin Bronze, Perry A. Boukind

Bachelors Theses and Reports, 1928 - 1970

In this investigation, attention is directed to the phases covered by a 28 per cent tin alloy. When the investigation was started, consideration was given to the possibility of making a Time - Temperature - Transformation curve for this parti­cular alloy. As the work progressed and further research was carried on, this phase of the work was abandoned.


An Investigation Into The Precipitation Of Copper From Mine Water, Using Sulfur Dioxide To Reduce The Ferric Ion Content, David S. Gleason May 1949

An Investigation Into The Precipitation Of Copper From Mine Water, Using Sulfur Dioxide To Reduce The Ferric Ion Content, David S. Gleason

Bachelors Theses and Reports, 1928 - 1970

The experiments which were preformed showed that sulfur dioxide would reduce the ferric ion content of the mine waters to a very low figure. The reduction in the ferric ion content would improve the efficiency of the precipitation process, and also increase the recovery of copper.


Operation Characteristics Of The Series System For Electrolytic Refining Of Copper, John T. O'Donnell May 1949

Operation Characteristics Of The Series System For Electrolytic Refining Of Copper, John T. O'Donnell

Bachelors Theses and Reports, 1928 - 1970

In the copper electrolytic refining operation, two main objectives are desired: the first is the production of a metal of desired chemical composition and physical characteristics, and the second is the recovery of the valuable by-products.


A Study Of The Physical Properties Of Low Tin Solders, Cornelius P. Dwyer Apr 1948

A Study Of The Physical Properties Of Low Tin Solders, Cornelius P. Dwyer

Bachelors Theses and Reports, 1928 - 1970

In 1947, out of the 100,000 long tons of tin con­sumed in the United States, 25,000 tons went into solder. Tin plate took 39,000 tons while babbit, bronze and coll­apsible tubes accounted for approximately 17,000 tons. Solder ranked second to tin plate and required more than the next three major uses combined.


The Effect Of Manganese And Magnesium On The Hardening Of Copper-Aluminum Alloys, Robert M. Hansen Apr 1948

The Effect Of Manganese And Magnesium On The Hardening Of Copper-Aluminum Alloys, Robert M. Hansen

Bachelors Theses and Reports, 1928 - 1970

During recent years, duralumin and all aluminum alloys have been made the object of much discussion regarding their hardening mechanism. The commercial success of nearly all of the alloys of aluminum and mag­nesium is dependent on their ability to age or precipitation harden.