 By the wet process the argillaceous chalk is mixed up with a large quantity of water in a circular wash-mill, provided with heavy iron harrows, attached to the horizontal arms of a vertical revolving shaft, to secure a thorough reduction of the more solid...  Reports and Awards ... - Page 155by United States Centennial Commission - 1878Full view - About this book
 | United States. Army. Corps of Engineers - 1871 - 108 pages
...the liquid, resembling whitewash in appearance, is conducted to large open reservoirs called backs, where it is left to settle. The clear water, as it rises to the surface or the heavier materials subside, is drained off. A portion of that which remains mingled with the raw... | |
 | Quincy Adams Gillmore - Concrete - 1871 - 152 pages
...the liquid, resembling whitewash in appearance, is conducted to large open reservoirs called backs, where it is left to settle. The clear water, as it rises to the surface or the heavier materials subside, is drained off. A portion of that which remains mingled with the raw... | |
 | Quincy Adams Gillmore - Cement - 1871 - 108 pages
...the liquid, resembling whitewash in appearance, is conducted to large open reservoirs called backs, where it is left to settle. The clear water, as it rises to the surface or the heavier materials subside, is drained off. A portion of that which remains mingled with the raw... | |
 | United States Centennial Commission - Centennial Exhibition - 1880 - 798 pages
...running full, employment is given to 50 men and boys. GENERAL REPORT OF THE JUDGES OF GROUP If. 155 At Seilley, France, Portland cement is made by a mode...are taken from time to time and made into cement in sampie-kilns, to verify the correctness of the proportions of carbonate of lime and clay. If any error... | |
 | United States Centennial Commission - Centennial Exhibition - 1884 - 1106 pages
...arms of a vertical revolving shaft, to secure a thorough reduction of the more solid particles to tin impalpable paste. "When a thorough and intimate mixture...are taken from time to time and made into cement in sample kilns, to verify the correctness of the proportions of carbonate of lime and clay. If any error... | |
 | United States board on behalf of U.S. executive depts. at the Internat. exhib, 1876 - 1884 - 1224 pages
...particles to an impalpable paste. When a thorough and intimate mixture is thus effected, the semi liquid mass is conducted away to large open reservoirs, where...are taken from time to time and made into cement in sample kilns, to verify the correctness of the proportions of carbonate of lime and clay. If any error... | |
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