The Cyanide Process, Copper Smelting and Refining, Zinc Smelting and Refining

The Cyanide Process, Copper Smelting and Refining, Zinc Smelting and Refining

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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. 1913 edition. Excerpt: ... pressure filters, and Merrill zinc-dust precipitation. 3'7. Van Ryn Slime P1ant.--The method of slime treatment at the Van Ryn slime plant, South Africa, does not illustrate the latest practice, as it was installed several years ago; nevertheless, it is interesting and instructive because it serves to show the evolution of series decantation in its earlier stages in that part of the world. o At the Van Ryn mine the slime is diverted to a series of dewatering vats, shown in plan and elevation in Fig. 3 (a) and (b), respectively. The water and slime coming from the sanddistributing tanks is divided into two equal parts and sent to vats a, 20 feet in diameter. The water enters the vats at b, and the overflow goes to the mill for reuse while the underflow is delivered through a pipe c to a lower vat d. The underflow consists of pulp composed of 4 parts of water to 1 part of slime, and is thickened to 1 part of water and 1 part of slime in vat d. The overflow from vat d is returned to the mill, and the underflow goes to the mixing tank e througha pipe f. In the mixing tank, the pulp is agitated with cyanide solution so proportioned as to have 3 parts of solution to 1 part of pulp. ' The thoroughly mixed pulp enters the next lower vat g, at the side h. The overflow from this vat goes to the precipitating boxes and the dewatered slime to the agitating tank i, where it is again agitated with cyanide solution, but of less strength. The pulp flows from this tank i to a sump, from which it is pumped to vat j. The overflow from this vat j is weak cyanide solution, and, after being strengthened it is returned to the agitating tank e. The underflow from the vat goes to an agitating tank l, where it is mixed with a solution that has passed...show more

Product details

  • Paperback | 124 pages
  • 189 x 246 x 7mm | 236g
  • Rarebooksclub.com
  • United States
  • English
  • black & white illustrations
  • 1236768647
  • 9781236768643