The flow trough is provided with a launder baffle system, which is located on its side, and is used to promote the static of the fluid circulating in the flow trough, thereby promoting the precipitation of the granular filter medium from the fluid. The flow trough is provided with an adjustable exhaust structure in fluid communication with the baffle system, which can discharge the adjustable air under the baffle system, thereby promoting the static and precipitation of the filter medium from the fluid.
The baffle system is associated with the launder and trough, which facilitates the removal of floating particles from the fluid and deposits these particles in the launder.
The shape of the bottom of the launder maximizes fluid flow under the launder. Most suitably, the bottom of the runner is round. However, the bottom of the runner can take any other suitable shape, such as square or triangle.
Associated with the launder is a baffle system that directs the fluid to flow around the launder to promote static flow, thereby promoting the precipitation of the medium from the molten aluminum. Certain baffles of the system are configured to facilitate the release of air from the fluid.
The launder baffle system also includes a plurality of baffles positioned parallel to the sides of the trough, which specifically guide the fluid and enhance the release of granular media from the fluid. Although a single such parallel baffle can be included in the baffle system. But as the number of parallel baffles increases, the sedimentation of the medium from the fluid increases.
The support structure maintains the baffle system in position relative to the runner. Although the baffle may only be associated with one side of the launder, it is preferable to position the baffle on both sides of the launder to maximize the settlement of the medium back into the tank.