Electrochemical and metallurgical industry . of special notice for the reason that, a hithertoconsidered stable compound (telluride of gold) toward cyan-ide solutions is brought within the field of commercial possi-bilities. The method is said to l)e simple and effectual. In 1903 a process was set forth by Mr. George Moore, thenat the Mercur plant in Utah, for the treatment of slimes. Theprocess is a departure from both the filter-press and de-cantation methods. He uses a light framework, some 20 feetlong, 4 feet high, and of sufficient width to permit the passageof pipes inside the framework
Electrochemical and metallurgical industry . of special notice for the reason that, a hithertoconsidered stable compound (telluride of gold) toward cyan-ide solutions is brought within the field of commercial possi-bilities. The method is said to l)e simple and effectual. In 1903 a process was set forth by Mr. George Moore, thenat the Mercur plant in Utah, for the treatment of slimes. Theprocess is a departure from both the filter-press and de-cantation methods. He uses a light framework, some 20 feetlong, 4 feet high, and of sufficient width to permit the passageof pipes inside the framework to evacuate the filtered solutions(which is done with vacuum pump). The frames are cov-ered with canvas, and several are grouped together, securelysuspended from a traveling crane under which are arrangedthree tanks: one to contain the slimes which are agitated bycompressed air to aid extraction, also to prevent the extraction is complete the filters are lowered intothe slimes and a vacuum is created within the filters to aid. FIG. I.—FILTER FRAMES, MOORE SLIMES PROCESS. the filtering of the solution. The same is continued until theslimt prevents further filtration, when, with vacuum main-tained, the filters are raised and carried to the second tank inwhich a dilute solution is contained. Here the filters are lowered and the strong solution dis-placed, the same followed with wash water. Finally the filtersare carried to a fourth position, where the vacuum is released,and compressed air is then used to free the canvas from theslimes, the latter falling into cars for removal from the plant. The process has been described by the inventor in theMining Reporter of November 12, 1903. The first successfulapplication of this process, so far as I am informed, was madeat the Lundberg, Dorr & Wilson mill at Terry, S. D., aftersome modifications were made by Mr. Dorr. In a recent com-munication to the writer, Mr. Dorr gives a resume of theirexperience with the process and
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