| OCR Text |
Show 63. furnace iato it the quanity at ill is simply leaching tanks, tha.t wa.rm a a.s co nce it water at rat.e d f comes rom solution and this 'inorease of . ec the metals. lUlila nt inued last to trao. brought about of water arte is r the solutio1!)ois obtained. The the in about bean furnace leaohing dissolution between the acid, leaching is rapid to heat s to Le a ch Ing the com'Pletely the is the remove solua.ble gold is readily in chloride and this rea.ction the tank. The solution which salt in nature, and the kept acid is it impa.rts being ore temperaure hastens the dissolution c·onverted to in the sluioed solution being added in suoh or soluable meta.ls. The having is launder and a twenty-f our hours is used f§r nascent into disoharged raction bleaching powder which is added, liberates and chlorine which attacks the readily gold. PREOIPITATING The efflent various metals solutions from the step in the process is to for markatin$. t-he metals ce ppe r- are to the on usual on reoovered, dried gold scrap iron. At in the prepartd form of roughly separated, baing sent boxes of time are the and solut ion shown by experience cleaned up, the the smelter. over copper and lead shipment, the gold bullion, to precipitate In pas sing the periods tor form suitable a to precipitated. T'he are precipitation and in practice Is iron. copper and scrap proper, the being marketed the present silve!- and reoovered be At these metals recover contain the tanks ohIo rides and the next torm of in the diaolved leaching and lead and metals silver copper, |
