Pressure drum filter for ultra fine-grained products

Processes High-Pressure Filtration and Cake Formation

The Krauss-Maffei pressure drum filter TDF is engineered by ANDRITZ to deliver precise filtration and cake processing in demanding industrial settings. Designed for high-pressure and high-temperature operations, this equipment excels in continuous cake formation, washing, and demoisturizing, effectively handling everything from chemical intermediates to mineral concentrates.

What sets the TDF apart is its closed design, which allows inert gas processing for applications involving toxic materials, enhancing safety and product quality. Operating under pressures up to 10 bar and temperatures up to 200 °C, it caters to a variety of industries, including chemicals, pharmaceuticals, mining, and food processing, with end products ranging from melamine powder to instant coffee.

The filter features a segmented drum encased in a pressure vessel, rotating at up to 6 rpm to ensure uniform cake formation. It integrates seamlessly into existing production lines with its comprehensive filtration zones—cake formation, washing, demoisturizing, and discharge—all optimized for efficiency. With a filtration capacity of 1,000-10,000 l/m²h and solids throughput up to 9,000 kg/m²h, it supports high-volume demands while reducing residual cake moisture.

Maintenance is streamlined with its accessible design and wear-resistant discharge system, minimizing downtime. The TDF is also adaptable, featuring customizable differential pressures for each filtration zone to suit specific process requirements. For enhanced integration, it utilizes a rotary valve to balance pressure disparities with adjacent process steps, ensuring smooth and efficient operation throughout the line.