Inclined De-watering Screens: Efficiency and Significance in Mining

April 17, 2018

Inclined de-watering screens process dirty slurry streams. Let’s see, the muddy extract has come down the tilted screen at an angle. Up to this point that water has acted as a sticky binding agent. Now, though, as the mineral stream leaves the screening equipment, the mud is gone. This drip-free aggregate is easy to mechanically sift. Let’s follow this sequence and tag the parts of the gear that affect output efficiency.

Feed-End Drainage

Set at a predetermined angle, the input sludge feels gravity’s pull. The water is draining rapidly from the wet slurry. It needs help, though, so a motor is mounted on the frame. Coupled to counter-rotating weights and drive assemblies, linear motion pushes the extracted material uphill. Because of the tilted deck, the slurry reverses up the de-watering deck, but the water keeps right on obeying the laws of gravity. Tempting as it feels to just sit and watch this process in motion, especially the separation action, we need to move onto the factors that impact equipment efficiency.

Determining De-watering Screen Efficiency

A widened deck and its high shoulders channel the fluid stream. The unobstructed feed section needs to be kept absolutely unimpeded so that the mass accelerating feature stays consistent. Of course, gravity is a known constant, but feed mechanisms can prevent gravity from imbuing the sludge with material-splitting velocity. Also, the angle adopted by the inclined deck directly impacts acceleration. Clean the feed assembly, lower the equipment angle, and test the configuration to see if it’s gained an efficiency-augmented edge. Finally, equipment motors also respond to a process-regulating hand. Adjust the amplitude and frequency of the oscillating motion, then check that efficiency margin once more.

A Mountain of Drip-Free Applications

Back at that mine, the de-watering screens are separating groundwater from extracted rock and shale. Meanwhile, construction sand and gravel are drying out. The two essential materials are leaving the output stage of a quarry de-watering station. Whatever the granular material, even salt, these essential equipment rigs adapt to handle their wet material loads. By the way, should gravity fall short of providing enough separation force, there are solutions that will boost the process. These de-watering rigs add sprays, extra motors, and cross dams to the feature list.

Reduce the inclined screen to slow the travelling slurry. Replace the screen media after the angle has lowered. In short, select de-watering screening equipment that’s highly configurable. Better yet, add active assistance in the form of oscillating motors and spray lines. Fitted with these active assemblies, a drip-free output stream is assured.

Optimized by: Netwizard SEO