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- <p>Cement clinkers<br />Portland cement<br />Grinding and polishing<br />Portland cement -- Additives</p> (1)
- Atmospheric pressure -- Reduction<br />Chemical equilibrium<br />Magnesium oxide<br />Sulfur dioxide (1)
- Bauxite -- Purification<br />Extraction (Chemistry)<br />Iron compounds (1)
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The Behavior Of The Metallic Stearates In Chromatography, Theodore Jack Roemer
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 …
Thermal Reduction Of Beryllium Chloride With Metallic Magnesium, Mailand R. Strunk
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 Preparation Of Elementary Fluorine And Its Reactions With Certain Organic Compounds, Robert Knox Neuman
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, …
A Study Of Methods For The Removal Of Iron Compounds From Bauxites, Clays And Related Materials, Paul R. Kasten
A Study Of Methods For The Removal Of Iron Compounds From Bauxites, Clays And Related Materials, Paul R. Kasten
Masters Theses
"It was the purpose of this work to investigate the possibilities of developing an extraction process which would remove practically all of the iron from bauxites at an economical cost without extracting much alumina. Such a process may also apply to high iron clays and related materials, and the possibilities of an extraction process for such minerals was included within the scope of the problem"--Introduction, page 2.
The Effects Of Low Concentrations Of Sulphur Dioxide On Oxidized Manganese Ores At Elevated Temperatures, William Henry Magill
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 …
A Study Of The Chemical Behavior Of Some Natural Occurring Iron Disulfide Ores, William Louis Shivelbine
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 …
Some Equilibrium Relations In The System Magnesium Oxide-Sulfur Dioxide-Water (Acid Region) At Pressures Below Atmospheric, Donat Bennes Brice
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
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 …