The commonest device is a stationary grizzly from 6 to 12 ft. long, slightly wider than the stream of ore, and set at a slope of from 45° to 60° to the horizontal. The bars, which should be of mild steel, are preferably wedge shaped with the wider part uppermost.
Grizzly bars are placed across the hopper and the spacing between the bars set to accommodate the maximum allowable feed size of the crusher. Oversize rock lands on top of the grizzly bars and can easily be removed by pushing them off with a loader or tilting the grizzly so the rock slides off.
Grizzly Steps, amount x length 3 x 900 3 x 900 3 x 900 4 x 1200 Screening Area 3.24 / 3.12 4.05 / 3.90 4.86 / 4.86 11.5 / 12 Wear liner thickness, pan/sides 16/8 16/8 16/8 20/10
Available in standard sizes from 20x26 to 42x48. Jaws longer than conventional crusher jaws permit a reduction in angle of nip, providing a more positive bite and fewer pinched out rocks. Produces high production tonnage and high reduction ratios while maintaining the same discharge opening size.
The crusher capacities given by manufacturers are typically in tons of 2,000 lbs. and are based on crushing limestone weighing loose about 2,700 lbs. per yard3 and having a specific gravity of 2.6. Wet, sticky and extremely hard or tough feeds will tend to reduce crusher capacities.
Roller Grizzly is available for primary and for secondary duty Sample designation: SR1541 SR1542 Maximum feed size: 1,500 mm and 400 mm Separation range: 50 180 mm Recommended inclination: 5 15 degrees Rotation detector is included Scrapers under first two rollers are included
June 10, 2020
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