Other Engineering Commons^™

The Effect Of Germanium On The Current Efficiency In The Electrolysis Of Pure Zinc Sulfate Solution, Keith R. Bock

Bachelors Theses and Reports, 1928 - 1970

It has long been recognized that electrolytic zinc cells are extremely sensitive to impurities. In fact, cer­tain impurities present in amounts as low as 0.1 mg/1 cause a serious loss of current efficiency. Also, the presence of several impurities in the electrolyte may accelerate the detrimental effect of each impurity.

The Mechanical Production Of Zinc Dust, Charles A. Schroer

Bachelors Theses and Reports, 1928 - 1970

The object of this thesis is to produce zinc dust suitable for zinc leach purification, by direct application of a mechanical force on a stream of molten zinc.The project is a continuation of work done by Mr. D. S. Gleason, while working for his Master of Science degree in the spring of 1952.

Electrowinning Of Zinc By Mercury Cathode, Tor O. Notevarp

Bachelors Theses and Reports, 1928 - 1970

The problem was the investigation of electrowinning of zinc by using a mercury cathode, employing a neutral solution of zinc sulphate and containing small amounts of zinc, in the order of ten grams zinc per liter and less. The purpose of this study was on the base of the laboratory experiments to investigate the operational data that might possibly be applied in practice or industry.

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.

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.

Electro-Galvanizing From A Purified Ammonium Sulphate Leach Of Anaconda Zinc Calcine, Phillip J. Mischkot Jr.

Bachelors Theses and Reports, 1928 - 1970

Ever since the introduction of metal products into our civilization, especially those of iron and steel, man has been confronted with the problems of corrosion prevention. As the agents which are conducive to cor­rosion cannot be completely eliminated, it has been necessary for man to develop processes and materials that will retard the degeneration of the metals that are so important to our industrialized world.

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 Study Of The Diffusion Of Electroplated Coatings In The Solid State., Michael R. Writt

Bachelors Theses and Reports, 1928 - 1970

The term diffusion means an equalization or homogenization of diverse materials. Specifically ap­plied to metals, diffusion is the interchange of atoms. It is, in effect, an invasion of one crystal lattice by the atoms of one or more other crystal lattices. Therefore, the study of diffusion must involve the geometry and physics of crystal lattices as well as their energies.

The Solubility Of Zinc Ethyl Xanthate In Water, Thomas M. Mckenzie

Bachelors Theses and Reports, 1928 - 1970

A determination of the solubility of zinc ethyl xanthate was attempted by measuring the refractive index of a saturated solution of that salt. The small increment in refractive index effected by adding zinc ethyl xanthate to water in saturation quantities rendered measurements difficult and of dubious accuracy.

Zinc Plating Magnesium, Howard Wilbur Adam

Bachelors Theses and Reports, 1928 - 1970

Magnesium and magnesium alloys are becoming more and more important in modern industry. Their use in the aviation industry has been greatly curtailed because of their comparatively poor resistance to corrosion especially in moist atmospheres. Many methods have been adopted to improve their resistance to corrosion.

The Recovery Of Zinc From Butte Mine Waters, Edmond M. Fern

Bachelors Theses and Reports, 1928 - 1970

Very little work has been done towards the recovery of zinc from mine water because the zinc content of the water is generally low. As different from copper, which can very easily be replaced by iron in any of its solutions, zinc is very high up in the electro-chemical series and so the few metals above zinc, most of which are rare and hence expensive, cannot be used to replace zinc from its solution.

The Age-Hardening Of Aluminum With Mgzn2, Sidney E. Worthen

Bachelors Theses and Reports, 1928 - 1970

The purpose of this thesis is to investigate the age-hardening of aluminum with magnesium and zinc in such proportions as to conform to the compound MgZn₂.

Because of a lack of time and proper equipment, the only property investigated was the hardness as indicated by the Rockwell Superficial Hardness Tester.

The Electrolytic Recovery Of Copper And Zinc From Scrap Brass With Special Reference To Lead-Bearing Brass., Frederick A. Hames

Bachelors Theses and Reports, 1928 - 1970

Several methods have been investigated, with some success, for treating scrap brass to recover copper and zinc, either as pure metals or as salts of the metals. One of the more promising of these methods is electrolysis in sulfate solution for the recovery of pure copper and zinc.

A Study Of The Concentration Of A Copper-Zinc Ore., Kenneth L. M. Dodd

Bachelors Theses and Reports, 1928 - 1970

The ore under investigation in this thesis is a copper-zinc ore which came from the state of New Mexico. The exact location is unobtainable. The purpose of the investigation was to determine the most effective means of concentration of the valuable min­erals present in the ore.

Structure Of Eutectics, Dilip K. Das

Bachelors Theses and Reports, 1928 - 1970

The present paper is a result of work done on the study of structures of eutectics of a certain eutectic-forming binary systems. In this research work no systems with intermetallic compounds have been studied.

A Study Of Solders, John D. Prater

Bachelors Theses and Reports, 1928 - 1970

The purpose of this paper is to furnish a qualitative method of comparing the degree of wetting of various solders upon different plate metals when several fluxes are used.

Electrolytic Recovery Of Copper And Zinc From Brass., V. Kent Loughran

Bachelors Theses and Reports, 1928 - 1970

The reclamation of metals from scrap is becoming increasingly important in the metallurgical industry. Copper, because it does not corrode readily and is electronegative to most common metals, is peculiarly adapted to reclamation.

The Electrowinning Of Copper From Roasted Sulphides, Thomas B. Linn

Bachelors Theses and Reports, 1928 - 1970

A hydrometallurgical process for the recovery of copper from flotation concentrates has long been con­sidered an attractive possibility. The object of such a method is to produce electrolytic copper without resorting to expensive matte smelting and converting.

Electrolytic Recovery Of Copper And Zinc From Brass, D. H. Swank

Bachelors Theses and Reports, 1928 - 1970

The purpose of this research was to continue the work of Thomas Parker, who worked on the recovery of copper and zinc from brass during the school year l934 - 1935. Since there is such a wide variety of brasses made with usually a third alloying constituent, remelt­ed scrap is suitable only for castings of wide tolerance in specifications.

The Effect Of Impurities On The Electrodeposition Of Zinc From Zinc Sulfate Solution Containing Antimony., Emmitt L. Klebba

Bachelors Theses and Reports, 1928 - 1970

It has been proven by research and years of experience, that before electrolytic zinc is possible, the electrolyte, as zinc sulfate solution must be prepared as pure as is economical. In other words, the ideal electrolyte must only be a solution of one metal - zinc. Every other metal and carbon must be excluded if good recovery and a firm deposit is to be obtained.

The Effect Of Hydrogen Overvoltage On The Electrolytic Deposition Of Zinc, John M. Munzenrider, Kenneth O. Sweeney

Bachelors Theses and Reports, 1928 - 1970

In the deposition of metallic zinc by electro­lysis from neutral or acid solution, little difficulty is experienced provided certain impurities are absent from the electrolyte. The use of the process has long been considered as a potential source, patents on the process having been issued as early as 1880. However, the early experimenters failed to realize the importance of impurities in the electrolyte, and for this reason, the process suffered several severe setbacks when commercial plants were built.

A Preliminary Study Of The Separation Of The Copper Sulfides From Sphalerite And The Effect Of Certain Reagents On Some Of The Pure Copper Minerals In Synthetic Mixtures, Gailen T. Vandel

Bachelors Theses and Reports, 1928 - 1970

The problem of separating the copper sulfide minerals from sphalerite, in copper - zinc ores, has been a difficult one. This is largely due to the lack of adequate research and the small amount of data obtainable on the behavior of copper and zinc sulfide minerals in flotation circuits.