. Mining and Scientific Press . a flow-sheet wasas follows: The ore was crushed in a 9 by 15-in. Dodge 884 MINING AND SCIENTIFIC PRESS December Ll. 1!>2] crasher to P. in. Two 26 by 12-in, rolls in - n-ther reduced it to J in., at which size it was f. d to an 8 ft. by q. Hardinge pebble-mill, working in closed circuit with a di g d 31 iroduct. The er was lanndi i d directly to astandard, belt-driven M. S. nun hine. The size ofagitating as 18 in., with 12-in. agitators. The a made a finished rate, and the pulp from thi i rea overflowed and was returned to the bine. The tailing was divided in
. Mining and Scientific Press . a flow-sheet wasas follows: The ore was crushed in a 9 by 15-in. Dodge 884 MINING AND SCIENTIFIC PRESS December Ll. 1!>2] crasher to P. in. Two 26 by 12-in, rolls in - n-ther reduced it to J in., at which size it was f. d to an 8 ft. by q. Hardinge pebble-mill, working in closed circuit with a di g d 31 iroduct. The er was lanndi i d directly to astandard, belt-driven M. S. nun hine. The size ofagitating as 18 in., with 12-in. agitators. The a made a finished rate, and the pulp from thi i rea overflowed and was returned to the bine. The tailing was divided into Bandand slime in a Dorr classifier. The sand went to aWilfley table, and the slime to two standard Callow cellsin Beriea The table made a finished concentrate, but theoverflow from the Callow cells was cleaned in a smallerair ell, which made a finished concentrate and a mid-dling. The results obtained at the Poza plant, thoughiry as to recoverj . were imum-aging enoughto justify the erection of another mill at Chagres, where. -- ?--. T T^ * . V —^ VT ??T ?>FlG. 1. THE ALTERED FERRARIS MILL T— ii by rain; a plaster coating made of 1 •. 3 mix-ture men1 and sand was added outside. Tliis con-strue; . which is used throughout central Chile, hasthe advantage of cheapness: moreover, Chilean masonseed and quick a1 this kind of work. It hasthe disadvantage, however, that frequent repairs areneeded; over long periods of time it will prove to be-ive than corrugated it. The ore is brought from Curimon tothe Chagres station, a distance of 30 km., in the ordinary20-ton trucks of the State railway. At Chagres it isshovel d Erom the railway car into one-ton Decauvillecars and dumped into a concha or concrete plat, which9 as a receiving-bin. The capacity of this plant is400 tons. The ore is taken to the mill-bin in half-ton
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