Larox SC vacuum disc filter

The Outotec Larox® SC filter consists of multiple discs mounted on a horizontal shaft. Each disc consists of 10 plastic sectors, covered with clamped-together filter cloth bags. The bottom of each sector is connected to a filtrate tube, connecting the rotating discs to a vacuum source that runs along the shaft to a rotary valve at the end of the filter.

The discs sit partially submerged in an agitated slurry bath and a vacuum is applied to the sectors. This forms a cake in the slurry as the filtrate passes through the cloth and the solids are captured on the surface. As the disc rotates out of the slurry, the cake is dried before a snap blow discharges it through chutes into the vat.