Engineering Commons^™

The Effects Of Low Concentrations Of Sulphur Dioxide On Oxidized Manganese Ores At Elevated Temperatures, William Henry Magill

Masters Theses

"Although there are large quantities of manganese ore in the United States, most of it is low-grade and cannot be used for the production of ferromanganese. Much government and private research has been done to concentrate the domestic low-grade ores but many problems have been encountered. A large number of treatments have been found necessary for ores from various sections of the country. Low-grade ores have been sulfated with sulfur dioxide in the gaseous state at elevated temperatures and the soluble manganous sulfate extracted with water. This gave a solution of manganous sulfate that may be used for the recovery …

Thermal Reduction Of Beryllium Chloride With Metallic Magnesium, Mailand R. Strunk

Masters Theses

"The purpose of this research was to investigate the thermal reduction of beryllium chloride by metallic magnesium. Beryllium is a remarkable element, being characterized by its hardness, lightness and durability. Although the art of metallurgy has developed to a point at which most metals can be produced at a low cost, there are a few metals, of which beryllium is an outstanding example, which can only be obtained at high prices and in small amounts because of the difficulties of recovering the metals as such from their compounds which occur in nature. Small amounts of pure beryllium can be obtained, …

The Behavior Of The Metallic Stearates In Chromatography, Theodore Jack Roemer

Masters Theses

"While research has been done on the chromatographic adsorption of the metallic ions, it has been confined mainly to the metallic salts in aqueous solutions. Considerable success has been met in the separation of the cations, but certain combinations have proved to be difficult to separate. Therefore, it would seem to be proper to examine the adsorptive behavior of the metallic ions in an organic medium to see if separation could be improved. This seems plausible since it is known that separations of organic substances have been very successful in organic reagents. Since the common inorganic metallic salts are not …

A Study Of The Chemical Behavior Of Some Natural Occurring Iron Disulfide Ores, William Louis Shivelbine

Masters Theses

"A complete investigation of the pyrites deposits of Missouri by Grawe has revealed many large deposits of pyrites available in commercial quantities in the Ozark area. The pyrites has been found occurring in contact with several various types of minerals. In the northcentral Ozark Plateau, pyrites is found associated with hematite-bearing sink structures. In the northwest part of the state, pyrites occurs in coal deposits, which, in the future, may be recovered as a by-product in the production and preparation of coal. Some pyrites, chiefly marcasite, has been found as fracture and cavity fillings in several other districts. The purpose …

The Preparation Of Elementary Fluorine And Its Reactions With Certain Organic Compounds, Robert Knox Neuman

Masters Theses

"This work had two main objectives: (1) The construction of an electrolytic cell for the production of fluorine, (2) the preparation of some organic compounds containing fluorine. This research was undertaken because of the growing importance of fluorine chemistry, particularly in the field or organic chemistry. Due to the extreme activity of fluorine, it is theoretically possible to prepare many times more fluorine-containing organic compounds than there are known organic compounds today. It has been predicted that fluorine-containing products will be developed to include new and useful dyes, plastics, pharmaceuticals, lubricants, tanning agents, metal fluxes, fumigants, insecticides, germicides, fire extinguishers, …

Some Equilibrium Relations In The System Magnesium Oxide-Sulfur Dioxide-Water (Acid Region) At Pressures Below Atmospheric, Donat Bennes Brice

Masters Theses

"This thesis describes the system Magnesium Oxide-Sulfur Dioxide-Water when brought to equilibrium at various pressures of sulfur dioxide plus water vapor, ranging from the vapor pressure of water at the temperature in question to atmospheric pressure. This system is of significance because it is being used more and more in the "Sulfite Process" in the manufacture of wood pulp and is replacing calcium oxide or a mixture of magnesium and calcium. The solution as it comes from the absorption towers is essentially such a system. Numerous investigators have done work on the system sulfur dioxide and water and the work …

Further Studies On The Effect Of Grinding Aids For Portland Cement Clinker, Charles Lee Rakestraw

Masters Theses

"In the dry grinding of cement clinker to a fine powder in which for example ninety percent or more of the particles are reduced to a fineness below that of a 200 mesh screen, it has been found that further fine grinding is extremely difficult and the energy input is out of all proportion to the further production of fine particles. This seems to be due to the fact that when the bulk of the material reaches this fineness there is a tendency of the finest particles to cling to each other and bunch or flocculate. Along with this tendency …

Study Of Methods For Processing Tall Oil., Frank Abel Anderson

LSU Historical Dissertations and Theses

No abstract provided.

Characteristics Of A Falling Film Distillation Column., Edward J. Kimmel 1920-

Electronic Theses and Dissertations

No abstract provided.

Graphical Analysis Of Certain Diffusion Problems., Wylie C. Kirkpatrick 1918-2008

Electronic Theses and Dissertations

No abstract provided.

Aircraft Finishes For Elevated Temperatures., Wilbur Louis Hayne 1922-

Electronic Theses and Dissertations

No abstract provided.

Removal Of Benzene-Insolubles From Coal Tar., John W. Mckenna 1924-2012

Electronic Theses and Dissertations

No abstract provided.

The First Approximate Conditions For The Formation Of Mesomorphous Coacervates., Stanley H. Jury 1916-1983

Electronic Theses and Dissertations

An analysis of the literature shows the close analogy between liquid crystalline phases in solution (fluids separating from main portion of solution and having some of the directional properties of crystals) and unipolar coacervates (solvated micelles of like charge separating as a distinct colloidal phase). A theory is here advanced that liquid crystalline phases in solution are the direct result of a maximum in osmotic pressure which is predictable from the first approximate equation of the Debye-Huckel theory in the same manner as unipolar coacervates were predicted by I. Langmuir. Application of the theory to aqueous soaps, investigated by Vold …

The Development Of An Ethocel Automobile Touch-Up Lacquer And A Suitable Sanding Surfacer : Ii. A Study Of The Physiological Effect Of Color Using The Munsell Color Notation., Thaddeus Andrew Peake 1919-1999

Electronic Theses and Dissertations

No abstract provided.

Heat Sealing Properties Of Ethyl Cellulose Modified Lacquers., William B. Moore 1924-2015

Electronic Theses and Dissertations

No abstract provided.

A Distillation Study : Ii. Factors Affecting Plate Efficiency : Iii. Properties Of Laminated Wood Glue Lines., Jack H. Nichols 1922-2007

Electronic Theses and Dissertations

No abstract provided.

Ethylcellulose Lacquer Coatings For Polystyrene Plastics., Stuart V. Heil

Electronic Theses and Dissertations

An ethylcellulose lacquer system for both decorative and protective purposes was developed for use on polystyrene plastics. It was found that a one-coat lacquer containing only alcohol solvents produced the most satisfactory finish. Formulations were based on experimental work, conducted to determine the effect of the various lacquer components on the plastic. The results of a study of formulations on a two-coat system are presented.

A Plastic Protective Film Coating For Metals., Arthur S. Widzer 1914-2002

Electronic Theses and Dissertations

No abstract provided.

The Surface Impregnation Of Wood : Ii. Use Characteristics Of Impregnated Wood : Iii. Investigations Of Resin Adhesives., John V. Birkel

Electronic Theses and Dissertations

This thesis is divided into three parts: I. The Surface Impregnation of Wood; II. Use Characteristics of Impregnated wood; and III. Investigations of Resin Adhesives. The material presented in Part I is a continuation of previous experimentation that had established general methods for producing a hardened surface wood product. The methods involved parting of the wood fibers on the surface by a special serrating tool, followed by a surface impregnation and final curing. This section presents work carried on to determine the optimum conditions for serrating and subsequent impregnation. The effect of species on impregnation. and the impregnation of unfinished …

Improved Techniques For Washing Iron Blue Suspensions : Ii. The Preparation Of O, O'-Dichlorobenzidine From O-Chloronitrobenzene., Marvin L. Gernert

Electronic Theses and Dissertations

I. IMPROVED TECHNIQUES FOR WASHING IRON BLUE SUSPENSIONS

The investigation of several procedures for the speeding of the washing of iron blue suspensions to remove electrolytes is reported. The use of several techniques to coagulate blue particles in the colloidal range to cause more rapid settling was found to be of little value. A conventional Oliver filter and centrifugal clarifier were found to be unsatisfactory for clearing iron blue suspensions. Considerable advantage in washing by settling and decantation was obtained with the settling of the blue suspensions in relatively shallow vessels. A continuous washing procedure was developed whereby the blue …

A Graphical Solution For Batch Steam Distillation Of A Binary Mixture., Howard D. Carlson 1921-

Electronic Theses and Dissertations

The theory for the graphical solution of batch steam distillation of a binary mixture is presented and illustrated. The results obtained from this graphical procedure are compared with actual experimental results. The comparison showed very close agreement between the graphical results and the experimental results. Three sets of experimental data are shown for benzene-bromobenzene mixtures and one complete set for benzene-toluene mixtures.

The Characteristics Of Fiberglas As A Column Packing : Iii. Mass Transfer Coefficients., Charles P. Talbott 1923-2000

Electronic Theses and Dissertations

No abstract provided.

The Characteristics Of Fiberglas As Column Packing : I. Design Of Column : Ii. Mass-Velocity Characteristics., Robert B. Akell 1921-

Electronic Theses and Dissertations

No abstract provided.

Surface Impregnation Of Wood : Ii. Gaseous Impregnation Of Wood : Iii. Investigations On Submarine Decking : Iv. Investigation Of Marine Adhesives., Otto J. Mileti

Electronic Theses and Dissertations

This thesis presents results on methods used to produce a hard surfaced wood product. The methods involve the parting of the wood fibers on the surface by a special serrating tool, followed by surface impregnation and final curing. The serrations on the wood surface produce an artificial grain upon curing. A preliminary investigation was made to improve the rot-resistance of wood by gaseous treatment. Results of such treatments show some limited success with formaldehyde on yellow poplar and warrant further study. An investigation was made to find a substitute for teak wood used on submarine decking. A number of combinations …

Heat Transfer To Fuel Oil In Viscous Flow-Characteristics Of A Fin-Type Heat Exchanger., Boyd R. Abbott Jr.

Electronic Theses and Dissertations

A unit was constructed for the study of film heat transfer coefficients of a heavy fuel oil in viscous or streamline flow. The heat exchanger was of the shell and tube type, having extended longitudinal steel fins welded to the tube. Auxiliary equipment consisted of an oil pump, oil storage reservoirs, piping, and means for measurement of temperatures and oil flow rates. The unit was operated both as a fin type heat exchanger with the oil in contact with the finned surfaces, and as a straight tube and shell exchanger with the oil on the tube side. Oil flow rates …

The Reaction Of Ethylcellulose With Fatty Acid And Its Application To The Varnish Industry : Ii. Ethylcellulose In Pencil Lacquers., Albert L. Kimmel

Electronic Theses and Dissertations

Ethylcellulose was refluxed with Stearic, Oleic, Linseed Fatty acids, and a neutral Mineral Oil in the presence of a solvent. The products recovered were analyzed to determine if any possible reaction had taken place. Conditions for the reaction were carried out so that the temperatures obtained could be in the near range of varnish cooking, that is between 375 and 500°C. The I solvents used were diethylbenzene, boiling point 180oC and tetralin, boiling point 208oC. In each case approximate stoichiometric proportions of the fatty acids and ethylcellulose were used. These were refluxed to a sensible minimum viscosity of solution. The …

Screening Characteristics Of Stillage., Samuel Drevitch 1919-2014

Electronic Theses and Dissertations

No abstract provided.

The Absorption Of Carbon Dioxide With A Semi-Plant Scale Packed Tower., Lewis P. Aker 1902-1981

Electronic Theses and Dissertations

No abstract provided.

An Investigation Of Distillery Losses., Efream I. Brensilber 1917-1990

Electronic Theses and Dissertations

No abstract provided.

The Study Of The Drying Of Buna S., George W. Williams, Richard L. Harvin

Electronic Theses and Dissertations

A study of the drying of Buna-S in crumb form (designated as GR-S) is presented in which investigations of vacuum and air drying are made. The drying characteristics are presented and the effect of drying on the quality is evaluated. Vacuum drying is investigated using a shelf and a rotary type unit. The individual effects of temperature, vacuum, thickness of crumb layer, and size of crumb particles are studied. Data are correlated by means of drying rate curves. Comparisons of the effects of the variables are made using these curves. Air drying is studied by the use of a shelf …