Show MILL PRACTICE AT THE ATLAS Plain dealer ouray colo the general design and flow sheet of this mill are very different from any in colorado the ore is received from the mine over a short blechert tramway carrying buckets of eight cubic feet capacity which are dumped into a hopper leading to a 30 inch by 10 foot revolving screen with one 12 inch perforations the undersize is discharged onto a 30 inch pan conveyor which carries the ore past an breso ore sorter arter who removes barren rock and selects suit able seized quartz to be used as a grinding medium in a hardinge pebble mill the pan conveyor discharges into a no 5 symonds crusher from which the ore is distributed by a belt conveyor in the bins back of the stamps the ore is stamped through mesh umesh 6 screens then classified classi fled tile the oversize fed to a 22 inch by 8 foot hardinge mill and the undersize bypassed to join the reground sands from the hardinge mill the pulp 80 mesh serene is fed to ground to pass an an ail eight compartment minerals separation froth flotation machine where it Is treated by the cold nonacid non acid process the concentrates are skimmed and after watering de do and drying are shipped to the smelters shelters sm elters the tailings from the flotation machine are passed through a hydraulic classifier and the spigot flow taken onto a no 4 delster deister table where some of the coarser minerals are concentrated which the flotation machine does not recover |