Bulletin . /^/c/cy//hg Oye/y/otp ^yoona^ ^^^I. OtV///o/p^ ^flz^^hjftw Figure 7. Flow sheet of mill in Granby district, Missouri. X, lead concentrates; Z, zinc concentrates;-V, middling; T, tailing; R, retmn. For significance of numbers see table on opposite page. ORE-DRESSING PRACTICE. 41 Data on parts shown in figure 7. 1. Mill storage bin, 400-ton capacity, all ore through 6-inch grizzly. 2. Shaker screen, ^-inch plate with l^-iQch openings, stroke 1^ inches, speed 125 strokes per Crusher, Blake type, size 24 by 12 inches, speed 350 r. p. m., set for IJ^-inchopening. 4. Cornish rol
Bulletin . /^/c/cy//hg Oye/y/otp ^yoona^ ^^^I. OtV///o/p^ ^flz^^hjftw Figure 7. Flow sheet of mill in Granby district, Missouri. X, lead concentrates; Z, zinc concentrates;-V, middling; T, tailing; R, retmn. For significance of numbers see table on opposite page. ORE-DRESSING PRACTICE. 41 Data on parts shown in figure 7. 1. Mill storage bin, 400-ton capacity, all ore through 6-inch grizzly. 2. Shaker screen, ^-inch plate with l^-iQch openings, stroke 1^ inches, speed 125 strokes per Crusher, Blake type, size 24 by 12 inches, speed 350 r. p. m., set for IJ^-inchopening. 4. Cornish rolls, size 42 by 16 inches, geared, speed 30 r. p. m. 5. Feed elevators (two), 20-inch belt, buckets spaced 20 inches apart, belt speed 300 feet per minute. 6. Trommels (two), size 48 by 96 inches, slope 1 inch per foot, speed 28 r. p. m. Screen is J/^-inch plate with ?«-inch round, punched holes. 7. Cornish rolls (two), size 36 by 14 inches, geared, speed 36 r. p. m. S. Cooley jigs (two), Harz type, six cells each 36 by 48 inches in size. Scr
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectminesandmineralresou
