Alumina

Optimize filtration across all Bayer Process steps with high-performance filter media. Reduce costs and ensures consistent quality of smelter (SGA) and chemical grade (CGA) alumina.

Filtration Solutions for Efficient and Sustainable Alumina Production

Boost Efficiency
Durable filter media reduces maintenance, extends service life, and lowers filtration cost across all Bayer Process steps.
Ensure Reliability
Engineered solutions ensure high clarity, stable throughput, and efficient dewatering under caustic and abrasive conditions.

Suitable Solutions for Every Step

Sefar provides tailored filtration solutions for all stages of alumina refining to enhance process stability, reduce costs, and ensure consistent output of SGA and CGA across the Bayer Process.

Security Filtration

Hot pregnant liquor with TCA preparation leads to scaling and short filter life. Our solutions for pressure leaf filters ensure clarity, prevent scaling, and extend service intervals.

Security Filtration

Hot pregnant liquor with TCA preparation leads to scaling and short filter life. Our solutions for pressure leaf filters ensure clarity, prevent scaling, and extend service intervals.

Seed Filtration

Fine seed filtration can cause high solid losses and poor cloth lifetime. Sefar rotary disc filter media delivers clear filtrate, dry cake, and long service life with easy replacement.

Precipitate Filtration

Residual soda in hydrate lowers alumina purity and raises calcination costs. Sefar rotary pan filter media ensures low soda levels, efficient washing, and long-lasting performance.

Red Mud Filtration

Red mud is abrasive and highly alkaline, making dewatering difficult. Sefar solutions for filter presses ensures dry stacking of mining waste and reliable long-term operation.

Other Applications

Processes for zeolite extraction, oxalate removal, and other applications demand precise filtration. Sefar filter media enables high solids retention and thereby ensure high filtrate clarity across various filter systems.

Our Products

Sefar’s extensive application expertise and broad portfolio of filtration fabrics ensure the optimal selection of filtration solutions that meet your specific requirements.

PF Filter Bags for Horizontal Kelly Filter

Less Scaling, Longer Filter Lifetime

Engineered to resist scaling in hot caustic conditions, SEFAR® X-Scale filter fabrics extend service life, reduce cleaning frequency, and improve flow consistency.

Downloads

English
pdf, 5.18 MB
Process Filtration Overview
Learn more about our process filtration solutions.

Powering Process Performance

Filtration plays a critical role in mineral processing performance. With extensive experience and a global presence, we help companies meet specific production, quality, and sustainability demands.

Custom-Fit Filtration for Complex Needs

Decades of application expertise and a fully integrated value chain, from yarn manufacturing to the finished product, enable us to deliver filter media precisely matched to specified processes and standards. This ensures optimal performance and long-term efficiency.

Maximized Efficiency and Yield

Sefar filtration solutions increase throughput, reduce product loss, and extend service life. Faster filtration, lower maintenance, and more durable filter media help boost productivity and yield while minimizing downtime and operating costs.

Worldwide Support, Where You Need It

Our local teams are backed by global lab resources to provide fast support and expert guidance. From troubleshooting to delivery, our strong local presence ensures reliability, responsiveness, and results, anywhere in the world.

Upcoming Events

8-11 April 2026 | Istanbul | Türkiye

Mining Türkiye Fair 2026

Mining Türkiye Fair, which is the most comprehensive fair organized in the Eurasia Region in the mining industry and which has maintained its steady growth since its inception, is preparing to break its own records this year as well.

Homepage Mining Türkiye 2026

Minerals

14-16 April 2026 | Lisbon | Portugal

Paste 2026

28th International Conference on Paste, Thickened and Filtered Tailings

Homepage ACG Paste Expo 2026

Minerals

21-24 April 2026 | Frankfurt am Main | Germany

Techtextile 2026

Technical textiles and nonwovens are extremely versatile. Techtextil brings together all areas of application. Here, car manufacturers meet fashion designers, and medical technicians meet industry specialists.

Homepage Techtextile 2026