The sizing and selection of the vital equipment i.e., crushers,screens,paddle feeders etc. covered under the system shall be based on the following characteristics of coal and operation conditions :
- Two conveyors must be established (1W,1S) for smooth running of plant.
- Simultaneous running of both conveyors at rated capacity is essential.
- Round the clock operation of coal handling plant is essential.
- Coal delivered to the power station shall be of size :300 mm & below (Occasionally 1-2% coal of 400 mm lumps may be allowed.
- H.G.I of the coal shall be between 45 to 65.
- Moisture content in coal will vary between 12% to 15% (For design purpose 20% is considered)
- The coal may have max of 20% of shale and sand stone.
- For volumetric computation the bulk density of coal shall be taken as 800 Kg/M3
- All hoppers and tunnels provided with 2 No. sump pumps (1W+1S)
- The coal unloading ysystem shall be capable of unloading the rake within time.
- The wagon tipplers shall be "ROTA SIDE " type and the angle of tippling is 150deg by giving 60 deg angle to the side of the wagon for emptying the coal contents into the hopper.
- The tippler designed to allow passage of BROAD GAUGE (1676 mm) track over tippler table.
- The Wagon tippler hopper shall have capacity of 3 wagons i.e.180 tons .
- The steel grating of mesh size 300mm X 300mm over wagon tippler hopper.
- Belt Weigher shall be designed for a range of 20% to 120% of rated capacity.
- RING GRANULATORS type crusher shall be provided for sizing the input coal to (-) 20mm (from 300mm).
