This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1895 Excerpt: ...dissolved by this action. Large quantities of free chlorine are contained in the gases of coke-ovens. This destruction of coke-ovens has caused many losses. With coke-ovens, where the by-products are gained, the content of salt in the gases is not injurious. However, a portion of the salt remains in the coke, and ...
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This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1895 Excerpt: ...dissolved by this action. Large quantities of free chlorine are contained in the gases of coke-ovens. This destruction of coke-ovens has caused many losses. With coke-ovens, where the by-products are gained, the content of salt in the gases is not injurious. However, a portion of the salt remains in the coke, and according to recent experiments, the different cokes used in the blast-furnaces of a large concern contained, on an average, 0.181 per cent. of salts soluble in water, namely: 0.062 per cent. of sodium sulphate (Na, SO, ), and 0.119 per cent, of common salt (NaCl). According to this, 62 kilogrammes (136.4 lbs.) of sodium sulphate, and 119 kilogrammes (261.8 lbs.) of common salt are introduced into a furnace consuming only 100 tons of coke per day. As is well known, common salt is used for glazing vessels of clay and stoneware. If now the refractory brick of the walls of blast-furnaces are constantly exposed to the action of such large quantities of salt, and hence become glazed, they will just as well wear out in a few months as those of the coke-ovens. Ad. 4. In most beds of the best refractory clays occur pyrites which, at higher temperatures, are converted into ferrous sulphide; the latter by the gases of the blast-furnace is converted into metallic iron. With this metallic iron the gases of the furnace, in which large quantities of carbonic oxide occur, remain in further contact. By the contact with the metallic iron the carbonic oxide is decomposed to carbon and carbonic acid, the carbon depositing upon the surface of the small iron balls and forming a shell around them. Notwithstanding this shell of carbon, new carbonic oxide gases constantly penetrate to the iron, fresh carbon being always deposited upon the latter. The very minute balls of i..
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PLEASE NOTE, WE DO NOT SHIP TO DENMARK. New Book. Shipped from UK in 4 to 14 days. Established seller since 2000. Please note we cannot offer an expedited shipping service from the UK.
