Sanding device and method for preforms

Abstract

The invention describes a device for applying sand to preforms for wetting and sanding bricks prior to firing (preforms), in order to prevent sticking of the stacked bricks in the firing oven. The device consists of a sanding device in which the preforms are placed in order to wet and sand the contact surfaces in a targeted manner. In one embodiment, the sanding device consists of a liquid pan and a sanding pan for first wetting and then sanding the contact surfaces of the preforms. By means of the targeted and sustainable application of sand on a surface of preforms, it is ensured that sufficient sand is applied between the preforms as an intermediate layer in the firing oven, and scatter losses commonly caused by prior art sprinkling with sand from above. The device according to the invention not only saves sand, but also protects other system parts which are not designed to handle scattered sand. Also, the device according to the invention reduces dust generation during the sanding of preforms.

Dependencies are inferred from the claim text.