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Practical Notes on the Cyanide Process

Practical Notes on the Cyanide Process


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About the Book

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: CHAPTER III. LABORATORY TESTS. Certain laboratory tests are necessary in order to determine the availability of any given sample of ore or tailings for cyanide treatment. The following points must be investigated: Extraction: 1. Is percolation possible, or must agitation be resorted to; 2. Approximately, what degree of extraction can be obtained; 3. The loss of cyanide, and the quantity of neutralizing agent necessary; 4. The proper strength for a cyanide solution; 5. Length of time necessary for best economic extraction. Precipitation: 1. The degree of precipitation from strong solution; 2. The degree of precipitation from weak solution; 3. If precipitation is imperfect, how can it be improved? It is evident that a very thorough examination is necessary before it can be definitely ascertained whether a given material is economically suitable for cyanide treatment. During the early stages of the development of the process, probably too much stress was lai'd upon the results of laboratory work; and, in consequence, the application of the process on a larger scale met with considerable disappointment and failure. More recently an attitude quite as unreasonable seems to have been taken; and the opinion popularly prevails that the results of cyanide tests in the laboratory can only be accepted with great reservations. It would be hard to tell whether such results are in general better or worse than those obtained in actual practice. However, it may be safely assumed that if laboratory tests are carried on with every precaution and care, and the same conditions observed as obtain in practice, the results, in the vast majority of instances, may be regarded as trustworthy. Of course, wherever possible, results thus obtained should be confirmed by ex...


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Product Details
  • ISBN-13: 9780217739962
  • Publisher: Rarebooksclub.com
  • Publisher Imprint: Rarebooksclub.com
  • Height: 246 mm
  • No of Pages: 72
  • Spine Width: 4 mm
  • Width: 189 mm
  • ISBN-10: 0217739962
  • Publisher Date: 21 May 2012
  • Binding: Paperback
  • Language: English
  • Returnable: N
  • Weight: 145 gr


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