Geology and Mineral Resources of MississippiU.S. Government Printing Office, 1906 - Всего страниц: 99 |
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Geology and Mineral Resources of Mississippi (Classic Reprint) A. F. Crider Недоступно для просмотра - 2019 |
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Alabama Alumina Alumina Al2O3 amount Analysis average bed rock belt bluff calcareous carbonate cassiterite cement chalcopyrite claims clay coal color Conrad containing country rock County Cretaceous deposits dikes district ditch east elevation Eutaw Fairbanks feet thick Ferric oxide Fe2O3 formation fossils Geology gold Grand Gulf granite gravels gray greensand greenstone Hilgard hills inches Inlet Island Jackson Kushtaka Lafayette lignite Lime CaO limestone lode loess Loss on ignition Magnesia MgO marl Matanuska mining Mississippi Mountain mouth occurs outcrop overlying pay streak petroleum places Prince William Sound prospecting pyrite pyrrhotite quartz railway region reported Ripley sand sandstone schist seams Selma chalk Seward Peninsula Shale side Silica Silica SiO2 strata streams strike sulphides Sulphur trioxide Sulphur trioxide SO3 surface Survey Tallahatta Tanana Tishomingo County tunnel U. S. Geol upper valley veins Vicksburg W. F. Hand width Wilcox yellow Yukon
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Стр. 68 - F., and must therefore be carried on in kilns of special design and lining. During the burning, combination of the lime with silica, alumina, and iron oxide takes place. The product of the burning is a semifused mass called "clinker," which consists of silicates, aluminates, and ferrites of lime in certain fairly definite proportions.
Стр. 69 - ... the amount of heat necessary to raise the temperature of 1 pound of water 1 degree Fahrenheit.
Стр. 69 - The more important of these factors are: 1. Chemical composition of the material. 2. Physical character of the material. 3. Amount of material available. 4. Location of the deposit with respect to transportation routes. 5. Location of the deposit with respect to fuel supplies.
Стр. 70 - A Portland cement plant running on dry raw materials, such as a mixture of limestone and shale, will use approximately 20,000 tons of raw material a year per kiln. Of this about 15,000 tons are limestone and 5,000 tons shale. Assuming that the limestone weighs 160...
Стр. 69 - The almost infinite number of raw materials which are theoretically available are. however, reduced to a very few under existing commercial conditions. The necessity for making the mixture as cheaply as possible rules out of consideration a large number of materials which would be considered available if chemical composition was the only thing to be taken into account. Some materials, otherwise suitable, are too...
Стр. 76 - SCHRADER, FC, and SPENCER, AC The geology and mineral resources of a portion of the Copper River district, Alaska.
Стр. 20 - British thermal unit (BTU) is the amount of heat required to raise the temperature of 1 pound of water 1° F.
Стр. 43 - Delta-plain of the Mississippi, but also higher up, perhaps as far as Memphis, and all along the gulf coast, at least from Mobile on the east to the Sabine river. Wherever circumstances allow, the overlying clay stratum No. 2, is also observed.
Стр. 70 - ... year. As the shale or clay may be assumed to contain considerable water, a cubic foot will probably contain not over 125 pounds of dry material, SO that each kiln will also require about 80,000 cubic feet of shale or clay. A cement plant is an expensive undertaking, and it would be folly to locate one with less than twenty years' supply of raw material in sight.
Стр. 69 - In certain localities deposits of argillaceous (clayey) limestone or "cement rock" occur in which the lime, silica, alumina, and iron oxide exist in so nearly the proper proportions that only a relatively small amount (say 10 per cent) of other material is required in order to make a mixture of correct composition. In the majority of plants, however, most or all of the necessary lime is furnished by one raw material, while the silica, alumina, and iron oxide are largely or entirely derived from another....