![]() ![]() ![]() The hopper also marks a break in responsibility. Occasionally, the company is lucky enough to sellīank run that also is sold from this point, Goessling says. Need of maintenance, the plant can be fed stockpiled material by While maintenance is performed on the plant. This way the dredge can continue producing material The stacker also can be repositioned to create a Is controlled by the dredge operator, to supply the feed hopper to The floating conveyors connect to an onshore stacker, which also Gradation the customer wants, Cooley says. Welch has the option of shutting this pump down, allowing Theĭried material is then blended onto the conveyor and heads to This material to a 20-inch Krebs cyclone to remove the fines. A 6– x 48-inch Gallagher pump inside moves The undersizeįalls through and into a smaller “possum belly” hopper that isĪctually submerged. Dried material isĭischarged into a conveyor for transport to shore. Other times it just goes back to the lake.īelow the hopper is an 8– x 20-foot polyurethane dewatering Often there is a barge waitingīelow to collect the material and take it to a waste pile on shore. As material sticks to the grizzly, it is raised by a The clamshell takes large bites from 100 feet every 90 secondsĪnd dumps into a hopper. And another step-down transformer onboard reduces it to 480 volts. Street, which is reduced to 12,460 volts at a step down Cooley says there are 36,000 volts coming in off the ![]() Is electric, unlike its dragline ancestors, so it is more environmentallyįriendly. But it is paying offīoth in production output and fuel costs. Order to run tandem and double production.įor Welch, this dredge was a $3.5 million investment, and eachįloating conveyor was $150,000, Cooley says. In some instances they have actually bolted machines together in Produced clamshells with buckets as large as 20 cubic yards, and Rohr continues making machines bigger and bigger. ![]()
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