Report of the State Mineralogist . Photo No. 25. Flotation Concentrates drying in the sun, at the Senator Mine of NewAlmaden Company, Santa Clara County. Photo by W. W. Bradley. Following that, concentration plants were placed in operation atthe Day tunnel and at the Senator mine which is at the north end ofthe New Almaden property. These plants consisted of crushers, ball-mills and Deister-Overstrom tables. The concentrates were roastedand mixed with ore, in the Herreschoff furnace installed at the motors furnished the power. In the Day tunnel mill, belowthe jaw crusher was a
Report of the State Mineralogist . Photo No. 25. Flotation Concentrates drying in the sun, at the Senator Mine of NewAlmaden Company, Santa Clara County. Photo by W. W. Bradley. Following that, concentration plants were placed in operation atthe Day tunnel and at the Senator mine which is at the north end ofthe New Almaden property. These plants consisted of crushers, ball-mills and Deister-Overstrom tables. The concentrates were roastedand mixed with ore, in the Herreschoff furnace installed at the motors furnished the power. In the Day tunnel mill, belowthe jaw crusher was a 6 x 5 Allis-Chalmers ball-mill in closed circuitwith a Dorr Simplex classifier. The grinding was regulated so thatapproximately 87% of the pulp passed 60 mesh. The overflow fromthe classifier passed through 4 Callow flotation cells, and then to 1double-deck Deister-Overstrom table. The table was not only crowded(120 tons per 24 hr.) but was compelled to handle an unclassified 12 diam. x 6 high, Dorr settler dewatered the c
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectminesandmineralresou
