The invention relates to a roller conveyer device for metallurgical slag materials. The roller conveyer device with a solid-liquid separation function comprises an internal spiral roller, a feed funnel and a sealing-supporting device, wherein the sealing-supporting device connects the rotating internal spiral roller with the static feed funnel into a whole; the internal spiral roller and the feedfunnel are arranged in a V shape, and the internal spiral roller has an included angle with the horizontal plane; the periphery of the internal spiral roller is sleeved with a shaft sleeve capable ofrotating together with the internal spiral roller; the shaft sleeve is arranged inside the sealing-supporting device; the shaft sleeve is shaped like a Chinese character 'tu'; one end and the peripheral surface of the shaft sleeve are in sliding contact with the sealing-supporting device; one end of the sealing-supporting device is fixed with a discharge hole of the feed funnel; the roller is driven to rotate by a driving device; the inner wall of the roller is fixed with at least one continuous spiral blade. The roller conveyer device can convey solid particles to a certain height and realize solid-liquid separation, is good in sealing effect, and can eliminate steam overflow caused by materials.