Chemical Age Volume 19-20

Chemical Age Volume 19-20

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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. 1914 edition. Excerpt: ...of waste metals and drosses, many of whom conduct a business amounting to millions of dollars yearly, recognize the importance of proper separation and grading of metal wastes and of selling alloys of guaranteed composition, but the smaller manufacturers and metal buyers have not been as careful as they might have been in view of the undoubted fact that the larger portion of all waste material is collected by junk men and jobbers, who resell the material to the smelters, refiners, or manufacturers. The use of old metals has extended rapidly, and any co-operation that will remedy trade objections to the use of secondary metals in any branch of manufacturing, as well as any saving that lowers the cost of treating waste products. must result in a broader market and prices more nearly approaching those for virgin metal. It is impracticable to segregate the statistics relating to the refining, remelting, and reuse of secondary metals according to states, but over 90 per cent of the refining and smelting of drosses and scrap metals in the United States is confined to the territory east of St. Louis and north of Ohio River. Reports were made by approximately 550 users of secondary material, of which about I50 were in Pennsylvania and West Virginia, 130 in New York, New Jersey, Connecticut, Maryland, and Massachusetts, and I50 in Ohio, Indiana, Illinois and Michigan. Over 60 per cent of the secondary aluminum was reported from the states of Ohio, Illinois, and Michigan. Smelters and_ refiners in St. Louis, Chicago, Cincinnati, New York, and Philadelphia recovered over 80 per cent of the antimony in alloys. The larger portion of the secondary tin was refined by plants in Pennsylvania, New jersey and New York. The recoveries of lead, zinc, and...
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Product details

  • Paperback | 456 pages
  • 189 x 246 x 23mm | 807g
  • United States
  • English
  • black & white illustrations
  • 1236904958
  • 9781236904959