[PDF] Modern American Methods Of Copper Smelting Third Edition Enlarged eBook

Author : Edward Dyer Peters
Publisher : Theclassics.Us
Page : 112 pages
File Size : 47,86 MB
Release : 2013-09
Category :
ISBN : 9781230267807

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This historic book may have numerous typos and missing text. Purchasers can usually download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1887 edition. Excerpt: ...salt also undergoes decomposition, yielding at first a basic sulphate of copper, which, upon losing its acid, becomes a dioxide and eventually a protoxide of that metal. These last changes, however, require a protracted high temperature. The oxidation of the iron present is pretty well advanced at the time of the maximum formation of cupric sulphate; but it is not until the decomposition of at least 75 per cent. of the last-named salt that the formation of sulphate of silver begins with any considerably energy. When once fairly started, however, this interesting and important reaction progresses with great rapidity, and the decomposition of the comparatively large proportion of sulphate of copper present furnishes ample oxidizing influence for the minute quantities of sulphide of silver. The maximum formation of the latter substance usually coincides with the almost entire destruction of the former salt, and it is at this point that the Ztervogd calcination should terminate, as any further exposure of the silver salt to heat lessens its solubility in water, and may even threaten its existence. The complete decomposition of the argentic sulphate is only accomplished by a long exposure to a high temperature, which is now easily borne by most ores and mattes, the easily melted sulphides having been converted into almost infusible oxides and basic sulphates. Galena (sulphide of lead), when present, is converted almost entirely into a sulphate of that metal, which, by a higher temperature, is partially decomposed with the evolution of sulphurous acid and the final production of a mixture of free oxide of lead with sulphate, the proportions of these two substances varying according to the quantity of foreign sulphides present. Zincblende...

Author : Edward Dyer 1849-1917 Peters
Publisher : Wentworth Press
Page : 370 pages
File Size : 27,10 MB
Release : 2016-08-29
Category : History
ISBN : 9781373561015

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This work has been selected by scholars as being culturally important, and is part of the knowledge base of civilization as we know it. This work was reproduced from the original artifact, and remains as true to the original work as possible. Therefore, you will see the original copyright references, library stamps (as most of these works have been housed in our most important libraries around the world), and other notations in the work. This work is in the public domain in the United States of America, and possibly other nations. Within the United States, you may freely copy and distribute this work, as no entity (individual or corporate) has a copyright on the body of the work. As a reproduction of a historical artifact, this work may contain missing or blurred pages, poor pictures, errant marks, etc. Scholars believe, and we concur, that this work is important enough to be preserved, reproduced, and made generally available to the public. We appreciate your support of the preservation process, and thank you for being an important part of keeping this knowledge alive and relevant.

Author : Edward Dyer Peters
Publisher :
Page : 726 pages
File Size : 17,57 MB
Release : 2015-02-14
Category :
ISBN : 9781298022899

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This work has been selected by scholars as being culturally important, and is part of the knowledge base of civilization as we know it. This work was reproduced from the original artifact, and remains as true to the original work as possible. Therefore, you will see the original copyright references, library stamps (as most of these works have been housed in our most important libraries around the world), and other notations in the work. This work is in the public domain in the United States of America, and possibly other nations. Within the United States, you may freely copy and distribute this work, as no entity (individual or corporate) has a copyright on the body of the work.As a reproduction of a historical artifact, this work may contain missing or blurred pages, poor pictures, errant marks, etc. Scholars believe, and we concur, that this work is important enough to be preserved, reproduced, and made generally available to the public. We appreciate your support of the preservation process, and thank you for being an important part of keeping this knowledge alive and relevant.