Brief:Do you need to thicken heavy inorganic sludges like coal ash, mining waste, or metal oxides? Our Gravity Belt Filter Press is designed for dense, granular sludges that traditional presses struggle with. The 5-meter gravity belt pre-thickens sludge via natural drainage, reducing water content by 40% in the first stage—before mechanical pressing even begins. Save time and energy in your thickening process, especially for high-density materials that settle quickly.