 | 1771 - 446 pagina’s
...shallow pit containing water enough to cover the whole, and allow it to remain therein from two to three hours, by which time the mass will have become partially decomposed and disintegrated. I then run off the excess of water, remove the mass, and allow it to remain in a heap in the moist... | |
 | 1847 - 530 pagina’s
...treated at once in the manner described below for coarse metal. To each ton of coarse metal, 56 lbs. of soda ash (containing about 50 per cent, of alkali)...manner, and introduced into a calcining furnace, in which the heat is gradually increased for 20 hours, so that at the expiration of this time a bright... | |
 | William Newton, Charles Frederick Partington - 1847 - 528 pagina’s
...pit, containing sufficient water to cover the whole, and allowed to remain therein from two to three hours ; by which time the mass will have become partially...is reduced to a fine powder, which will be in about twenty-four hours. The powder is washed in any convenient manner, and introduced into a calcining furnace,... | |
 | William Newton - 1847 - 534 pagina’s
...pit, containing sufficient water to cover the whole, and allowed to remain therein from two to three hours ; by which time the mass will have become partially...is reduced to a fine powder, which will be in about twenty-four hours. The powder is washed in any convenient manner, and introduced into a calcining furnace,... | |
 | 1848 - 966 pagina’s
...pit, containing sufficient water to cover the whole, and allowed to remain therein from two to three hours; by which time the mass will have become partially...is reduced to a fine powder, which will be in about twentyfour hours. The powder is washed in any convenient manner, and introduced into a calcining furnace,... | |
 | 1848 - 492 pagina’s
...pit, containing sufficient water to cover the whole, and allowed to remain therein from two to three hours ; by which time the mass will have become partially...is reduced to a fine powder, which will be in about twentyfour hours. The powder is washed in any convenient manner, and introduced into a calcining furnace,... | |
 | United States. Patent Office - 1848 - 1028 pagina’s
...shallow pit containing watet enough to cover the whole, and allow it to remain therein from two or three hours, by which time the mass will have become partially decomposed and disintegrated. I then run off the excess of water and remove the mass, and allow it to remain in a heap in the moist... | |
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... hours, by which time the mass will have become partially decomposed and disintegrated. The excess of water is then run off, and the mass removed, and allowed to remain in a heap until the whole is reduced to a fine powder, which will be in about 24... 