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Old 10-07-2019, 04:17 PM   #7331 (permalink)
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I suppose it all comes down to what Neil considers to be "next generation of solar panels and wind turbines". If whatever is out 50 years from now is next gen, then that may be correct.

A few examples of electric heavy equipment and the stationary machinery that has been electric for a long time does not represent the bulk of the work done to mine, refine, and transport raw materials into finished goods. It all relies on fossil fuels even if parts of the process are electric, or diesel electric (which is diesel then).

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Old 10-07-2019, 04:27 PM   #7332 (permalink)
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The point with mining equipment is that while the loads are huge, speed and distances are not. So the total amount of power needed is not that big. Drivetrains are already electric and the power is provided by on-board generators that could easily be replaced by batteries, that only have to be recharged at night.

And in some cases they never need to be recharged at all, like here:
https://www.firstpost.com/tech/science/worlds-largest-electric-vehicle-is-a-110-tonne-dump-truck-that-needs-no-charging-7190131.html
There ain't no such thing as a free lunch, but this gets as close to freeloading as possible. That thing there is much greener than meets the eye.
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Old 10-07-2019, 05:04 PM   #7333 (permalink)
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Old 10-07-2019, 05:23 PM   #7334 (permalink)
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Maybe we should be using conveyor belts to generate electricity for mined materials that go from a high point to some lower point. How much potential energy is stored in Mt. Everest anyhow?
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Old 10-07-2019, 05:45 PM   #7335 (permalink)
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Old 10-07-2019, 06:09 PM   #7336 (permalink)
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How about a wind and solar replacement for amfo?

If a rock truck "doesn't need that much power" then please explain the latest version cat 979 haul truck. It's engine is a 20 cylinder, 4 turbocharger monster that makes 4,000 horsepower.
It carries 400 tons at over 40mph.
Fuel capacity is 2,000 gallons on 2009 and up cat 979F.
It's a truck with a train engine.
Explain how a truck with a 2,000 gallon fuel tank and 4,000 horsepower engine doesn't really need that much power.


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Originally Posted by freebeard View Post
Sorry.

Baby steps. I like the 14,00V power line for the shovel, it must follow it around like a big extension cord.
I have seen that. The world's biggest power shovel runs electric, but the distance it moves is measured in feet if not inches over hours.
It's almost stationery.
The rock truck is more like a taxi, for ore.
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Old 10-07-2019, 06:18 PM   #7337 (permalink)
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Quote:
If a rock truck "doesn't need that much power" then please explain..
That much net power. It's a rob Peter/pay Paul pushme-pullyou sort of thing.
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Old 10-07-2019, 08:01 PM   #7338 (permalink)
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Quote:
Originally Posted by oil pan 4 View Post
How about a wind and solar replacement for amfo?

If a rock truck "doesn't need that much power" then please explain the latest version cat 979 haul truck. It's engine is a 20 cylinder, 4 turbocharger monster that makes 4,000 horsepower.
It carries 400 tons at over 40mph.
Fuel capacity is 2,000 gallons on 2009 and up cat 979F.
It's a truck with a train engine.
Explain how a truck with a 2,000 gallon fuel tank and 4,000 horsepower engine doesn't really need that much power.




I have seen that. The world's biggest power shovel runs electric, but the distance it moves is measured in feet if not inches over hours.
It's almost stationery.

The rock truck is more like a taxi, for ore.
Roughly 528 ft. per. day in a deep cut and twice that in a shallow cut.

Quote:
As an operator, Miller praised the 6360 Captain shovel. “She was a wonderful machine; nothing could touch her when it came to production. When I was on her, we regularly dug a complete pit one mile long from end to end in only 10 days. We regularly turned in production numbers showing more than 7,000 cubic yards per hour,” Miller boasted proudly. “The east half of the pit, where the overburden reached 100 ft high, the Captain dug this in only five days. When we took over with the 5900 shovel, this same section took 11 days.” Production numbers obtained from Arch Mineral confirmed Miller’s experience. During her active life, the Captain shovel moved 809,300,000 cubic yards of overburden, a number far greater than any other single shovel or dragline.
https://www.coalage.com/features/the...s-dying-hours/

Side note.

Quote:
Electrical equipment on board included eight hoist motors rated at 16,000 hp, eight swing motors provided 10,000 hp, and four crowd motors added another 4,000 hp. A total of 16 propel motors, one at each end of each crawler unit were rated at a total of 3,200 hp. Of course, not all these motors ran with maximum power at the same time, but the machine consumed enough electricity to serve a town of 30,000 people.
A few of my favorite pics.

https://pbase.com/lexyky/image/155308936
https://pbase.com/lexyky/image/155324930
https://pbase.com/lexyky/image/155333327
https://pbase.com/lexyky/image/155308888


More pics here.

https://pbase.com/lexyky/captain_mine&page=all




>
 
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Old 10-07-2019, 10:10 PM   #7339 (permalink)
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What's the environmentally friendly alternative for amfo?
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Old 10-08-2019, 12:17 AM   #7340 (permalink)
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I'm imagining a high-voltage pylon on big tracks, maybe one like the four on the shovel.

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