The surface of slanted channel for the solid mate -rial is coared with Halar. it may effectively prevent the materials with bad slide property from jamming. The parf of centrifuge which contacts with the materials to be separated are alI made of stainless steel. which may improve the erosion-proof property of the centrifuge and hygienic requirements. It is allocated with gas counter-blow device (optional part). which may assist the scraper for scraping and reduce remaining filter cake.