The Mexican mining journal . PingQicO Mill Ht (iiunujuatd. December. 1915. THE MEXICAN MINING 446 t PATIO At the Tonopah-Belmont mill weldingof cam shafts with thermite has beentried. The cost per shaft was $ The Churchill Milling Co. at Wonder,Nev., has made a saving of lb. o;cyanide per ton by changing the methodof washing on the Oliver filter, usingwater on both the ascending and des-cending sides of the drum instead ofbarren solution on the former and wateron the later. In order to prevent ex-cessive dilution of solution by this doubleuse of water, a rubber apron is pl
The Mexican mining journal . PingQicO Mill Ht (iiunujuatd. December. 1915. THE MEXICAN MINING 446 t PATIO At the Tonopah-Belmont mill weldingof cam shafts with thermite has beentried. The cost per shaft was $ The Churchill Milling Co. at Wonder,Nev., has made a saving of lb. o;cyanide per ton by changing the methodof washing on the Oliver filter, usingwater on both the ascending and des-cending sides of the drum instead ofbarren solution on the former and wateron the later. In order to prevent ex-cessive dilution of solution by this doubleuse of water, a rubber apron is placedagainst the cake on the ascending sideto divert the surface water to the slime-discharge launder. Similarly on the des-cending side an iron apron 13 in. widewas placed so that its upper edge wasjust above the blow-off section. Thisapron scraped off about 1/16 in. of thecake surface and removed considerablewash water, diverting the pulp to theusual discharge launder without inter-fering with the regular operation of theblow-off. This method makes it possibleto keep the cake covered with a sheeto
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectminesandmineralresou
