![]() ![]() The addition of a barge to add length to a dredge is a common feature used to increase the overall swing width of a hydraulic dredge. The wider the swing arc for the dredge, the more production time the dredge sees because it stays engaged in the material. Hydraulic dredges are designed to swing through the material in order to keep the excavation device engaged in the material for consistent bulk feed to the dredge pump. Mechanical dredges tend to pothole dredge, meaning they are in one area for a period of time, and they create craters of holes throughout the deposit. While functionally similar, there are important differences between hydraulic and mechanical dredges in terms of their deposit reach capabilities and their requirements for material transport and material delivery.ĭeposit reach: Hydraulic and mechanical dredges both mine and move differently within the deposits. ![]() Alternately, mechanical dredges use mechanical means such as a clamshell to remove the dredged material, and require a secondary means of transportation. Hydraulic dredges utilize a pumping system that employs water as its means of material transportation. While applications and models vary, most dredges may be placed into one of two basic classifications – hydraulic or mechanical. ![]() However, dredges are used for a number of essential processes such as waterway navigation, aquaculture, environmental remediation, land restoration, land development, and many other applications – including mining.ĭREDGE CLASSIFICATIONS – HYDRAULIC OR MECHANICAL Not many people understand the importance of dredges, the major role that they have played in the development of the world’s economic trade system, and the role that they continue to play in our global economy. Published in Mining World magazine, March 2015 ![]()
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