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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.
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.
Host Rocks And Gangue Minerals Associated With Copper Deposits In Plutonic Igneous Rocks, Richard D. Montgomery
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
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
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
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
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
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
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.
Polarographic Analysis Applied To Metallurgical Solutions And Products, Donald W. Johnson
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
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.
Ferromagnetic Alloys In The System Cu-Mn-Zn, W. Michael Yim
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.
Vacuum Distillation Of Zinc And Cadmium From Zinc Leach Purification Cake, Stiles R. Slosson
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.
Mineralization Of The Bonanza Mine, H. M. Callaway
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
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
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.
Separation Of Cadmium From Zinc In The Purification Step Of The Leaching Cycle, L. C. Powell
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.
A Mineral Dressing And Economic Study Of A Complex Arsenical Ore, Luigi D. Piana
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.
An Investigation Of The Precipitation Of Cobalt With Zinc Dust, Lyle Hallberg
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.
A Study Of The Transformation Of A Twenty-Eight Per Cent Tin Bronze, Perry A. Boukind
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
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.
The Characteristics Of The Electrolyte In The Series System Of Electrolytic Copper Refining, Carl W. Howald Jr.
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.
Construction And Operation Of A Laboaratory Size Thum Cell, Raymond Dugdale
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.
Application Of The Electric Furnace To The Melting Of Cathode Copper At The Tacoma Smelter, Alvin H. Nelson
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 Casting Of Anodes For The Series System Of Electrolytic Copper Refining, Robert R. Kupfer
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
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.
Operation Characteristics Of The Series System For Electrolytic Refining Of Copper, John T. O'Donnell
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
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
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.