Optimum Feed Size to Roll Crusher

The theoretical maximum size of cube that the knobs will grip, when the rolls are set at minimum spacing, is 24 in.; but the rolls will reduce any stone that can be introduced into the 7-ft square hopper. Large blocks will span across the tops of the two rolls; immediately the slugger teeth on the one roll so equipped go to work on these block s and quickly shatter them into pieces that can be gripped between the sets of regular teeth; from this point on, the action is a mixture of sledging and pressure crushing. The same selective segregation which we described in connection with the single-roll machine occur in the double-roll crusher; the smaller pieces are cleared quickly, leaving the rolls free to work on the larger blocks.

The entire performance on individual skip-loads of stone takes place in a very short period of time. Ten-ton loads of mixed-size medium limestone will clear the crusher in from 10 to 15 sec.; large single blocks, weighing from 6 to 8 tons, are crushed in from 5 to 20 seconds, depending upon the toughness of the individual piece, and upon the way it happens to land in the crushing chamber. These performances were clocked on machines turning out a 6-in. product.

Effect Rock Feed Size on Grinding Mill Capacity Sesquioxides -- Hematite Group, Corundum Composition Veins and Vein Minerals STANDARD SCREEN ANALYSIS Dimorphism, Trimorphism, Solid Solutions, Gel or Colloidal Minerals Red Flags and Scams Capacity of the Single-Roll Crusher Other Precious Metals MINING EQUIPMENT AUSTRALIA Reserve Calculations using nearest drill hole results Milling, Smelting and the Environment Mining and the Environment Tungsten Ores Crusher Operating Cost Crusher product curves and tables