SEFAR® X-Treme

New high-performance anti-scaling filter fabric for security filtration in alumina refining. Benefit from stable flow, higher yield and reduced downtime.

Typical scaling of standard Diastar filter cloth

Scaling in security filtration clogs fabrics and cuts flow, driving frequent changeouts and downtime.

Stabilize Security Filtration and Reduce Downtime

SEFAR® X-Treme is an innovative filter fabric that resists scaling, keeps flow stable, and protects output. The result is higher productivity and less disruption to your refinery operations.

Constant flow rate over time
+7% alumina produced
20% longer cloth lifetime
PFAS-free design

Download Technical Paper

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SEFAR® X-Treme Technical Paper
A new fabric material with anti-scaling properties for security filtration in Alumina refining. Luc Parent & Sandrine Forsoni, Sefar; Alain Boivin & Nicholas Turgeon, Rio Tinto. Presented at ICSOBA 2025.

No Scaling After 82 Days

Lab analysis after 82 days of operation shows standard fabric (left) with 90% reduction of air permeability and SEFAR® X-Treme (right) with 0% reduction.

No Scaling After 82 Days

Lab analysis after 82 days of operation shows standard fabric (left) with 90% reduction of air permeability and SEFAR® X-Treme (right) with 0% reduction.

For Diastar Filter Equipment

With SEFAR® X-Treme, Diastar pressure leaf filters operate longer between interventions, maintaining steady throughput despite scaling pressure.

For Kelly Filter Equipment

SEFAR® X-Treme protects filtration capacity in Kelly pressure leaf filters by minimizing blinding effects that gradually restrict flow and reduce output.