Grizzly Feeders

STEP 1: With the help of computed precision of big size materials, ideal width of the feeder is selected from Table A. Multiply this factor by the greatest dimension of the material's largest piece to determine minimal width of feeder width. There is also a throat opening factors where the use of a four-sided hopper is done. To find the minimal hopper throat opening proper factors are selected and multiplied by the same largest dimension.

STEP 2: Determine the different combinations of feeder slopes and widths available for the needed capacity. Neglect any which are tinier in width than the minimum feeder width calculated before. It may become necessary to enhance the minimum width of the feeder in order to gain the desired capacity. If so, ignore minimum width from previous step and substitute with the altered minimum feeder width for the needed capacity.

STEP 3: Now regard feeder length. Generally the positioning and size of companion equipment like conveyors, crushers, hoppers, aprons, chutes, etc. propose the given to minimized length of the feeder pan. Also, the pan could not be shorter than that which is required to hold the material at its repose angle on the pan after the shutting down of the feeder. Find out minimum pan lengthen make your own scaled diagram to demonstrate the angle of repose and slope of feeder on the rest and pan. Enable the throat opening of the proper hopper when utilizing a hopper with four sides. Add 12" (30 cm) to the length of the pan as a factor of safety to forestall the material from continuing to freely flowing. After this, add the length of any grizzly sections which is needed to the minimum pan length to ascertain the minimum feeder length.

STEP 4: Again evaluate slopes, width and capacities. Regard headroom and feeder length needs. Match these with location, critical dimensions and elevations of associated equipment. Recollect to allow for future demand of increase in capacity. Now select the slope/ width combination which matches the desired capacity and which is ideal for the particular installation and application. You would need to go steeper and narrower to match up with a crusher opening; possibly wider to have feed from an active apron conveyor. Or, you may need to go wider with comparatively less slopes to suit the limits of elevation. You are possibly to discover that although over one size feeder will fulfill your capacity needs, one specific width/ length/ slope combination optimally serves your predefined needs.

Max. capacity working of the Crusher with low depreciation since the chamber for crushing is not filled with materials of undersize.

Grizzly fines, released by belt conveyor, crushed prod, safeguard the rubber belt from shearing and attrition owing to the discharge of product from primary crusher.