thoughts on ore transport8 May 2021 17:50
My analysis of ore transport, Havieron to Telfer mill, total capacity 18m tonnes per annum
Assume Havieron tonnage to Telfer mill = 12 m tonnes per annum
Assume no stoppages, mine and mill operating 24 hours /day 365 days per annum
Daily tonnage to the mill = 12000000/ 365 = 32876 tonnes this is a very big operation
A sorting plant at Havieron will be necessary to reduce the large waste tonnage transported by 30%
Assuming No sorting, I have tried to assess the massive transport operation.
Using Caterpillar CAT 797F Ore Hauler
Hourly tonnage to be transported = 1370 tonnes
Distance Havieron to Telfer mill =45 Km round trip 90 Km
Top Speed of Cat797F ore hauler =68 Km/Hr assume 60 Km/hour
Rated gross machine weight 623690 Kg
Payload = 363 tonnes
Width of truck = 9.87m (used to determine road width)
Capital cost of the Cat 797F =$US3.4m (2021)
Time for a round trip mine to mill = 1.5 +1 hours = 2.5 hours
Allow for loading, unloading, daily inspection, daily refuel and change drivers (4 times)
Fuel tank 2000 gallons US, Fuel consumption 77 gallons US/Hr, Can operate 25Hrs on one tank
One truck delivery rate to mill = 363/2.5 tonnes per hour
Number of trucks required to operate =1370*2.5/363 = 9.43
Assume availability 90%, Trucks required = 9.43*/0.9 =10.4 say 11 trucks
Capital cost of fleet, 11*$US3.4m = $US 37.4m (2021)
Major cost factors to be considered.
Can one mine with one decline produce this tonnage?
Vertical shafts for man and skip hoisting will be required
Waste sorting at Havieron will be required to reduce the number of trucks required to 8 trucks
Capital cost of the fleet, to spread the cost, a truck leasing contract might be considered
Running cost
Maintenance workshops for these huge machines to be built and artisans trained
All weather road to be construction wide enough and strong enough to bear the weight of the trucks. The road width recommended by manufacturer is 3 times truck width, =3*9.87m = say 30m
In my opinion this is going to be a massive mine with a long profitable future, I hope I am around to bear some of the fruits.