Example aspects of a slide gate, a slide gate assembly, and a method of using a slide gate assembly are disclosed. The slide gate can comprise a gate body defining a first face, a second face, and a sliding groove; and a plurality of reinforcement ribs extending from the second face, the reinforcement ribs comprising: an exterior rib frame; and an interior rib grid comprising an annular reinforcement rib, wherein the interior rib grid is oriented within a boundary of the exterior rib frame.