. Transactions. Remaining On a 60-mesh screen On a 100-mesh screen On a 200-mesh screen Passed a 200-mesh screen. Per CR1 [N 01 wini: SOLDI [ON. <;nl li is not possible to make a satisfactory comparison of mill-products a1 the different mills because the physical character <»i*the ores treated by them differ to such an extent thai whatconsidered a fine sand at one mill according to mesh-size,might be a Blime at another mill. The proper separation of the Bands from the slimee Is still avital question for the plants of the Black Bills, and one thatlias given the mill
. Transactions. Remaining On a 60-mesh screen On a 100-mesh screen On a 200-mesh screen Passed a 200-mesh screen. Per CR1 [N 01 wini: SOLDI [ON. <;nl li is not possible to make a satisfactory comparison of mill-products a1 the different mills because the physical character <»i*the ores treated by them differ to such an extent thai whatconsidered a fine sand at one mill according to mesh-size,might be a Blime at another mill. The proper separation of the Bands from the slimee Is still avital question for the plants of the Black Bills, and one thatlias given the mill men much trouble. The present systema decided advance from the former practice, yr\ there is stillmuch mom for improvement. Tin- Treatment of the filling of the sand-vats is accomplished by Batters andMcin distributors, the construction of which is shown in Fig. 4. Fig. J3J SCALE, 1:16 Butters and Meins Sand-Distributor. The distributor, suspended by a rod from a trolley running ontracks above the sand-vats, can readily be transferred from onevat to another. A launder fee^jp the pulp into the hopper ofthe distributor as near the center as possible in order to avoidthrowing the feed against the sides of the hopper, which wouldcause an irregular distribution of the sands in the vat. Thedistributors vary in size according to the capacity slope of the pipe-arms is 1 in 12, and the diameter of thepipes in the different distributors varies from to all the pipe-arms in a distributor are of the same di-ameter, but at the Horseshoe mill the long arms are in., the 602 CRUSHING IN CYANIDE SOLUTION. medium arms from to 8 in., and the short arms 2 in. in di-ameter. The discharge-nozzles, usually separate castings, arecontrolled bj wooden plugs. Generally each distributor hassix arms,although the one al the Eorseshoe mill
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Keywords: ., bo, bookcentury1800, bookdecade1870, booksubjectmineralindustries
