E/MJ : engineering and mining journal . (.. which i< asubsidiary controlled by the same interests. The crushing of the ore is done with a lMii-in. Blakecrusher, ten 1,400-lb. stamps, one 6-ft. Trent Chilean milland one 5x22-ft. tube mill in closed circuil with a non-duplex classifier. The screens used on the batteries have tute of Mining Engineers, in San Francisco, 1915, Bome - have been made to the mill, Buch atli. I tnir thii kener between thi tank; one clarifying tank, one battel ink and two zinc boxes. The pulp, upon leaving the agitators, hasa fresh wash o olution in each of tin- four
E/MJ : engineering and mining journal . (.. which i< asubsidiary controlled by the same interests. The crushing of the ore is done with a lMii-in. Blakecrusher, ten 1,400-lb. stamps, one 6-ft. Trent Chilean milland one 5x22-ft. tube mill in closed circuil with a non-duplex classifier. The screens used on the batteries have tute of Mining Engineers, in San Francisco, 1915, Bome - have been made to the mill, Buch atli. I tnir thii kener between thi tank; one clarifying tank, one battel ink and two zinc boxes. The pulp, upon leaving the agitators, hasa fresh wash o olution in each of tin- four Dorr - before entering the stock tank. By using afresh barren wash for each thickener instead of tl ? mt-decantation systi m, Ibut In cyanide loss is also increased. From I,1,300 tons oi each da]. Thi lime is slai und in a small Chil- ean null and added intermittent I i ing the firsi Pachuca tank. It was found I needed for agitation, and a1 presenl the fourth is used asa settler, the decanted solution being precipitated. To. THE MILL OF THE CHURCHILL MILLING CO., WONDER, NEV. i/oxl-in. openings, the stamp dutj being as high as 16 tonsper day, with a yearly average of L5.*3 tons. The ore isprincipally one of silver and averages between $15 and $25 per ton. The average tonnage for nine months of1916 has been 157 tons per day, whiiconsidering that the mill was designed forbui .< tononly a few changes have been made in i1incut, and at the same time securing a reco90%. Since the excelled he Churchil mill, by E. E. Carpenter, read before the American [nsti- •Mining- engineer, 267S Eudora St., Denver, Colo. a tank, a nit is D funnel at)! i :_th in the Pachuca tan. 31/2 lb. KCN ried, but a bard. in value of the zinc-box tailh 928 ENGINEERING AND MINING JOURNAL Vol. 102, No. 22 and 150 lb. to the clarifying tanks. By keeping theprecipitation heads at about 3% lb. KCN, no difficulty inprecipitation was encountered and tails averaging lessthan 10c. are obtained. The zinc shavings us
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Keywords: ., bo, bookcentury1900, bookdecade1910, booksubjectmineralindustries
