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Matte Smelting Volume 2; Its Principles and Later Developments Discussed. with an Account of the Pyritic Processes

Matte Smelting Volume 2; Its Principles and Later Developments Discussed. with an Account of the Pyritic Processes


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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. 1896 Excerpt: ...first, obviating the waste by inferior oxidation, which advantage is inherent in pyritic smelting; second, the employment of a fuel cheaper per unit of calorific power; third, a useful mechanical effect in rendering the charge less dense and thereby facilitating the passage of the blast. In order not to mislead the reader I will add that I have not been able to replace more than half the coke with wood. My experiments in the use of coal in the pyritic furnace have been but slight and inconclusive, nor am I aware of others of a more thorough nature; but from analogy there should be important economies in the use of proper kinds of coal, and no technical difficulties therein. My conclusion, however, was that a portion of the fuel should be of a strong dense kind, not burning too freely, but passing well down into the tuyere region, so as to burn there and produce the hearth temperature needed to perform the work of melting. The use of too light and fragile a fuel, which is consumed high up in the furnace, will in every case give rise to a cooling of the hearth and the formation of incrustations which defeat the intentions of the smelter. Then is required the application of greater heat to rectify the disturbance. We may get this by increasing the percentage of fuel, more particularly of coke. But the addition of more coke, while it increases the hearth temperature, decreases the amount of oxygen available for combination with the sulphides of the charge. Consequently more matte is formed, and with equal steps iron is withdrawn from the slag. See Erdmanris Journal, XVII., p. 471, for description of the practice at Nischui Tagilsk, where raw copper ores are smelted, and roasted matte resmelted, by the use of wood in the blast furnace. Two hundred and fifty cubi...


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Product Details
  • ISBN-13: 9781130948660
  • Publisher: Rarebooksclub.com
  • Publisher Imprint: Rarebooksclub.com
  • Height: 246 mm
  • No of Pages: 32
  • Spine Width: 2 mm
  • Width: 189 mm
  • ISBN-10: 1130948668
  • Publisher Date: 01 Mar 2012
  • Binding: Paperback
  • Language: English
  • Returnable: N
  • Weight: 77 gr


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Matte Smelting Volume 2; Its Principles and Later Developments Discussed. with an Account of the Pyritic Processes
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