- Owner: PT Kaltim Prima Coal
- Project: Coal Crushing and Handling System
- Location: Kaltim Prima Coal Facility, Sangatta, East Kalimantan, Indonesia
- Scope: Engineering, Procurement, Construction, Startup and Commissioning
Engineering, procurement, construction, start-up and commissioning of the coal crushing and handling facility.
Coal is received from off-road trucks with a capacity of 100 to 220-tonnes at the truck dump hopper. The hopper is located at the western end of the stockpile and consists of a single 300-tonnes hopper, with main dump face. The truck dump area will have a secondary side dump face at a future date. The hopper discharges through a feeder breaker to the sizer station feed conveyor. The feeder breaker reduces the received coal from 500 mm to 200 mm x 0 mm at an average capacity of 2,000 MTPH (2,500 MTPH peak). At the sizer station the coal is further reduced to 50 mm x 0 mm, and then it is conveyed and discharged to the stockage pile with a traveling tripper. The storage pile has a total capacity of 200,000 tons.
A reclaim tunnel under the full length of the stockpile houses the reclaim conveyor and includes five equally-spaced draw-down hoppers with coal valves and stockpile activators. The coal is discharged directly onto the reclaim conveyor at an average capacity of 4,000 MTPH (4,500 MTPH peak). Downstream of each reclaim discharge valve, a belt scale respectively controls the valve coal feed rate, while indicating total metric tons. Each coal valve also has an average capacity of 4,000 MTPH (4,500 MTPH peak). Diverse coal stockpiles can be blended via the use of these coal valves. The reclaim conveyor includes a sampling system meeting KPC and Australian standards.
The reclaim conveyor discharges into a surge bin. Additionally, coal from the existing system can be discharged to the surge bin. The 400-ton surge bin discharges through a single variable speed belt feeder with an average capacity of 4,000 MTPH (4,500 MTPH peak) to the existing overland conveyor. The surge bin is designed for a future second outlet and belt feeder.
Dust suppression is provided at the truck dump hopper, at the discharge of the sizer, and at the load area of the existing overland conveyor. Additional ancillary systems include fire detection and protection, wash down hose stations, and tunnel ventilation.