Transactions . vats. The 4-in. centrifugal pump feeding tothe No. 1 agitation-vat is seen partly connected to it. Pro-truding from the top of the decantation-vat, a little below thecenter of the picture, is seen the end of one of the 2-in. decan- tation-pipes. Method of Treatment. The accumulated slimes, after having been allowed to dry inthe slime-pits as much as practicable, are conveyed to the agi-tation-vats in ordinary half-ton ore-cars by means of the small,friction-geared hoist already mentioned. Each agitation-vat isprovided with an iron grizzly, measuring 3 ft. 3 in. by 9 ft.,and havi
Transactions . vats. The 4-in. centrifugal pump feeding tothe No. 1 agitation-vat is seen partly connected to it. Pro-truding from the top of the decantation-vat, a little below thecenter of the picture, is seen the end of one of the 2-in. decan- tation-pipes. Method of Treatment. The accumulated slimes, after having been allowed to dry inthe slime-pits as much as practicable, are conveyed to the agi-tation-vats in ordinary half-ton ore-cars by means of the small,friction-geared hoist already mentioned. Each agitation-vat isprovided with an iron grizzly, measuring 3 ft. 3 in. by 9 ft.,and having openings, which is suspended over the one side of the center. The content of the car is dumpedonto this grizzly andthe portion that does not pass through ofits own weight is trampled, or otherwise forced through, by oneor two boys. For some time the material being treated aver-aged from 20 to 25 per cent, of moisture, and in this condition CYANIDING SILVER-GOLD ORES OF THE PALMAREJO MINE. 275. Fig. 8.—Timber Foundations Supporting Decantat:on-Vats of Slime-Plant
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Keywords: ., bo, bookcentury1800, bookdecade1870, booksubjectmineralindustries
