rockproducts.com/mag/rock_new_operation_digs/ -
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Published on: 9/6/2008
Last Visited: 9/6/2008
"Down here in Florida, there is no support for a drilling operation," says General Manager Ed Callahan.
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Callahan says the primary's framework, the operator station, the walkways and the conveyors were all built and designed in house."It's definitely a Youngquist Brothers' crusher (plant)," Callahan says.
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"It's like one of the world's largest remote control toys," Callahan says.
This toy is propelled by several electric motors.A 250-hp motor for the hydraulic system runs whenever the machine is in motion and shuts down as soon as it stops.A 300-hp motor operates the jaw crusher.A 75-hp motor operates the pan feeder, and a 50-hp motor controls the grizzly.Another 60-hp motor controls the smaller hydraulic systems, Callahan says.
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A structural analysis by Templar Technologies, a New Jersey engineering firm, helped keep the steel to a minimum, Callahan says.The conveyor framework was assembled into 40-foot segments, small enough to be galvanized at another shop.
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Callahan says the upper portion of that conveyor and the rest of the plant that follows, with the exception of the sand plant and radial stackers, was built by Process Machinery.
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Callahan says the material circulated to Tower Two simultaneously makes stone size numbers 5 (1 to , inch), 89 (, inch to 1.18 mm) and 57 (1 inch to 4.75 mm).
From the bottom of Tower One, number 3 (2 to 1 inch) and number 4 (1, to , inch) stone bypasses the crusher and is conveyed straight to the stockpiles."It's just a naturally occurring stone, and depending on the screen sizes, we can make it right off the tower," Callahan says.
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"We minimized the horsepower requirements of the main sump pump by utilizing the potential energy of the water," Callahan says.
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"All three sand fractions are recipe blended back together to customer-specific blends," Callahan says.
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Callahan says, although it was a concern, the height of the stackers has not created any segregation issues.
The stackers are free standing on concrete pedestals with counter weights on the back.Callahan says it is a perfectly balanced system that rotates up to 300 degrees on a Rotec bearing with only 4 hp.
The massive stockpiles feed a growing market that Callahan says is booming.And he estimates the site has 40 years of permitted reserves to feed the market.He says that the plant will have no problem absorbing the demand as the market grows.
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"The cost per ton is much lower using electricity than relying on an overabundance of diesel engines," says General Manager Ed Callahan.The electric-powered conveyors have eliminated the need for haul trucks that require fuel, drivers and maintenance.He says it would take at least five haul trucks to maintain the current production level.