 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...  Bulletin of the United States Geological Survey - Seite 74von Geological Survey (U.S.) - 1906Vollansicht - Über dieses Buch
 | 1906 - 1190 Seiten
...considerable saving in crushing costs as against the hard limestones used in many northern plants. AMODNT AVAILABLE. A Portland cement plant running on dry...tons of raw material per year per kiln. Of this about 1.5,000 tons are limestone and 5,000 tons shale. Assuming that the limestone weighs 160 pounds per... | |
 | 1904 - 768 Seiten
...raw materials should be as soft and as dry as possible. (3) Amount available. — A Portland-cement plant running on dry raw materials, such as a mixture...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... | |
 | 1904 - 1040 Seiten
...raw materials should be as soft and as dry as possible. (3) Amount available. — A Portland-cement plant running on dry raw materials, such as a mixture...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... | |
 | George Ferdinand Becker - 1904 - 732 Seiten
...raw materials should be as soft and as dry as possible. (3) Ainount tn-nHnhle. — A Portland-cement plant running on dry raw materials, such as a mixture...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... | |
 | Edwin Clarence Eckel - 1905 - 802 Seiten
...raw materials should be as soft and as dry as possible. 3. Amount available. — A Portland-cement plant running on dry raw materials, such as a mixture...kiln. Of this about 15,000 tons are limestone and 5000 tons shale. Assuming that the limestone weighs 160 Ibs. per cubic foot, which is a fair average... | |
 | Heinrich Ries - 1906 - 690 Seiten
...excavation and crushing requires that the raw materials should be as soft and as dry as possible. (3) Amount available. — A Portland cement plant running...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... | |
 | Geological Survey (U.S.), Alfred Hulse Brooks - 1909 - 858 Seiten
...piasters, 1905, p. 391. ' Idem, pp. 392-393. AMOUNT OF AVAILABLE LIMESTONE. Eckel ° states that— A Portland cement plant running on dry raw materials,...5,000 tons shale. Assuming that the limestone weighs ICO pounds per cubic foot, which is a fair average weight, each kiln in the plant will require about... | |
 | 1909 - 568 Seiten
...excavation and crushing requires that the raw materials should be as soft and as dry as possible. (S) Amount available. — A Portland cement plant running...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... | |
 | Chester Albert Reeds - 1910 - 118 Seiten
...beneath the shale. r,4 Mr. Eckel (i) of the I". S. Geological Survey makes the following estimation : ''A Portland cement plant running on dry raw materials,...will use approximately 20,000 tons of raw material a year per kiln. Of this amount, 15,000 tons are limestone and 5,000 tons shale. Assuming that the... | |
 | Oklahoma Geological Survey - 1910 - 118 Seiten
...the region (Plate XXIV). Mr. Eckel (i) of the US Geological Survey makes the following estimation : "A Portland cement plant running on dry raw materials,...will use approximately 20,000 tons of raw material a year per kiln. Of this amount, 15,000 tons are limestone and 5,000 tons shale. Assuming that the... | |
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