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Rideal, Eric Keightley:Industrial Electrometallurgy
- Paperback 1908, ISBN: 9780217489638
[ED: Softcover], [PU: Cambridge Scholars Publishing], Purchase of this book includes free trial access to www.million-books.com where you can read more than a million books for free. This… More...
[ED: Softcover], [PU: Cambridge Scholars Publishing], Purchase of this book includes free trial access to www.million-books.com where you can read more than a million books for free. This is an OCR edition with typos. Excerpt from book: Section I.?ELECTROLYSIS IN AQUEOUS SOLUTIONS Copper. The electrolytic refining of copper is by far the oldest and largest of electrometallurgical processes, and has had a remarkable development especially in America, where over 85 per cent. of the world-s copper production is dealt with. Of recent years some advance has been made on the electrolytic recovery of copper directly from the ore by leaching with a suitable solvent and subsequent electrodeposition of the metal. The Electrolytic Recovery of Copper from its Ores.? Early experiments such as those of Marchese and Nicola- jew, made on coarse metal matte (Cu2S,Fe2S3) and white metal matte (Cu2S) obtained in the ordinary metallurgical process, indicated that these sulphides, although easily cast into anodes and of sufficient electrical conductivity for use in electrolytic cells, using copper and ferric sulphate containing free sulphuric acid as electrolyte, were unsuitable for this purpose owing to the rapid accumulation of impurities in the electrolyte and the uneven solution of the anodes. The liberation of sulphur? Cu2S-CuS' +Cu-Cu +S" which adhered to the anode caused the voltage to rise above economical pressures, whilst only low current densities could be used, 0-3 amp. per 100 sq. cms. Borchers in 1908 conducted some experiments1 at Mansfield, in which the matte was further refined by blowing in a Bessemer converter, then fusing the Cu2S now free from the metalloids into anodes. An acid copper sulphateelectrolyte was used, and with a current density of 0-5 amp. per 100 sq. cms. good deposits of pure copper were obtained. Agitation of the electrolyte was found necessary to detach the sulphur deposit from the anodes. For a short period over 10 tons of copper were produced per week by this method. Atten...Versandfertig in 6-10 Tagen, [SC: 0.00]<
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Eric Keightley Rideal:Industrial Electrometallurgy
- used book 1908, ISBN: 9780217489638
Purchase of this book includes free trial access to www.million-books.com where you can read more than a million books for free. This is an OCR edition with typos. Excerpt from book: Sect… More...
Purchase of this book includes free trial access to www.million-books.com where you can read more than a million books for free. This is an OCR edition with typos. Excerpt from book: Section I.?ELECTROLYSIS IN AQUEOUS SOLUTIONS Copper. The electrolytic refining of copper is by far the oldest and largest of electrometallurgical processes, and has had a remarkable development especially in America, where over 85 per cent. of the world-s copper production is dealt with. Of recent years some advance has been made on the electrolytic recovery of copper directly from the ore by leaching with a suitable solvent and subsequent electrodeposition of the metal. The Electrolytic Recovery of Copper from its Ores.? Early experiments such as those of Marchese and Nicola- jew, made on coarse metal matte (Cu2S,Fe2S3) and white metal matte (Cu2S) obtained in the ordinary metallurgical process, indicated that these sulphides, although easily cast into anodes and of sufficient electrical conductivity for use in electrolytic cells, using copper and ferric sulphate containing free sulphuric acid as electrolyte, were unsuitable for this purpose owing to the rapid accumulation of impurities in the electrolyte and the uneven solution of the anodes. The liberation of sulphur? Cu2S-CuS' +Cu-Cu +S" which adhered to the anode caused the voltage to rise above economical pressures, whilst only low current densities could be used, 0-3 amp. per 100 sq. cms. Borchers in 1908 conducted some experiments1 at Mansfield, in which the matte was further refined by blowing in a Bessemer converter, then fusing the Cu2S now free from the metalloids into anodes. An acid copper sulphateelectrolyte was used, and with a current density of 0-5 amp. per 100 sq. cms. good deposits of pure copper were obtained. Agitation of the electrolyte was found necessary to detach the sulphur deposit from the anodes. For a short period over 10 tons of copper were produced per week by this method. Atten... , libri, Kartoniert / Broschiert<
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Eric Keightley Rideal:Industrial Electrometallurgy
- new book ISBN: 021748963X
(*) Book out-of-stock means that the book is currently not available at any of the associated platforms we search.
SAMPLE
Eric Keightley Rideal:Industrial Electrometallurgy
- new book ISBN: 021748963X
(*) Book out-of-stock means that the book is currently not available at any of the associated platforms we search.