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.

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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

21-24 April 2026 | Frankfurt am Main | Germany

Techtextile 2026

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5-7 May 2026 | Perth | Australia

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At GRX26, mining operators, METS innovators, engineers and constructors, processing and logistics specialists, government, research institutions, and global partners come together to share what's working, challenge what isn't, and commit to the collaborations that will shape our sector's future.

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11-13 May 2026 | Jakarta | Indonesia

MetConnex 2026

Join industry leaders in Indonesia this May for MetConnex 2026, the region's dedicated exhibition for mineral and metal processing. Explore sustainable mining technologies, network with metallurgical experts, showcase cutting-edge solutions, and build lasting business connections.

MetConnex 2026

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