flop gate

flop gate

[′fläp ‚gāt]
(mining engineering)
An automatic gate used in placer mining when there is a shortage of water; the gate closes a reservoir until it is filled with water, then automatically opens and allows the water to flow into the sluices; when the reservoir is empty, the gate closes, and the operation is repeated.
References in periodicals archive ?
wide grizzly bypass conveyor with an adjustable flop gate, as well as a 40-in.
A flop gate within the pant leg chute gives operators the option to either recirculate oversized material for further screening and crushing or divert it to be stockpiled as a 100percent crushed material.
Halfway through the shift, with a three-minute flop gate change, the plant can then begin to make three completely different products--including the 3/8-in.
The flop gates in all chutework and the bins on top of the crushers and the screens also aid in making these changes quickly.
plus material from these screens had previously fed both tertiary cones, flop gates can now send all 3-in.