J&H fines hoppers also have a flange for connecting the plant de-dust system just below wire cloth at the feed end of the screen. A plate blocks the fines material from being sucked into the de-dust flange. This location creates a negative pressure below the screen, pulling the particles down through the wire cloth instead of sucking fines material from the hopper back up into the screen. This configuration with an appropriate air flow rate maximizes the efficiency of the screen machine above it.
There are specialty hoppers, for example the J&H Modulating Hopper Valve. Options for the hopper include choices of fabrication material, liners, baffles, alternative slope requirements, and access doors. Speak with a J&H representative about the many options that are available.
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