The Practice of Copper Smelting
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The Practice of Copper Smelting

The Practice of Copper Smelting


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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. 1911 edition. Excerpt: ...of research, furnishes the most continuous and extensive records. At one of its 115-ft. (35 m.) furnaces, the average results for 30 days were: 1 neg. prewwre draft at bridge-wall 0.88 inches draft in flue after passing boilers 1.89" 1 The negative pressure is expressed here in inches of water. (One inch =.0254 m.) At the Steptoe valley reverberatories, as well as at those of the Garfield and Cananea plants, a similar negative pressure is maintained. Any considerable decrease in the same at once reduces capacity. The accompanying autographic record of the draft-pressure at one of the Anaconda furnaces for one shift shows how such measurements may be made with little manual labor and, taken in connection with the table entitled: "Memorandum of furnace operations during one shift," indicates the effect which these operations produce upon the draft, and constitutes also an excellent check upon the furnace-men.1 The almost complete momentary checking of the draft from the dropping of the ore-charge will be noticed, as well as the lesser disturbance due to the dropping of the coal. Table 2.--Memorandum Of Operations During One Shift Skimming 7.00-7.14 (Coal charged during skimming.) Side door opened 7.16-7.16i Coal charged 7.28-7.31 Charged 7.52-7.57 Tapped 8.05-8.15 Coal charged 8.15 Coal charged 8.40 Grating 8.43-9.17 Side door opened and charged 8.54-8.59 Coal charged 9.05 Coal charged: 9.27 Coal charged 9.49 Charged 10.07 Coal charged 10.25 Coal charged 10.41 Skimming 10.45-10.58 Coal charged 11.04 Charged 11.16 Some grating 11.16-11.35 Coal charged 11.35 Coal charged 12.03 Charged 12.04 Tapped (1J ladle) 12.37-12.48i Coal charged 12.45 1 For this record and table, as well as for several other details, I am indebted to an...


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Product Details
  • ISBN-13: 9781152691827
  • Publisher: Rarebooksclub.com
  • Publisher Imprint: Rarebooksclub.com
  • Height: 246 mm
  • No of Pages: 228
  • Spine Width: 12 mm
  • Width: 189 mm
  • ISBN-10: 1152691821
  • Publisher Date: 01 Oct 2012
  • Binding: Paperback
  • Language: English
  • Returnable: N
  • Weight: 413 gr


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