PerMix Vacuum Plow Mixer & Dryer vs. Traditional Drum Dryer: Which Is Better for Diesel-Saturated Diatomaceous Earth? Processing diatomaceous earth saturated with diesel fuel is a challenge. Traditional rotary drum dryers have long been used to remove moisture and hydrocarbons, but they come with drawbacks: high operating temperatures, uncontrolled volatile organic compound (VOC) emissions, safety […]