Chemicals
Sefar filtration solutions for chemical production improve yield, clarity, and reliability, to improve efficiency in crystallization, purification, catalyst recovery, and other processes.
Prevent Filtration Bottlenecks and Boost Yield

Expert Filtration Matched to Your Chemical Process
Chemical producers face strict purity standards and challenging process conditions. Sefar delivers customized filtration solutions for separation, crystallization, catalyst recovery, polymerization, and more, to boost yield, reliability, and uptime.

Specialty chemical processes involve complex reactions and high product purity demands, making precise filtration essential for consistency, high yield, and process control.
We provide high-performance filtration solutions tailored to diverse specialty chemical processes. From crystallization to clarification, our filter media ensure optimal separation, product clarity, and process reliability in demanding chemical and thermal conditions. The key process steps for filtration include:
- Crystallization
Filter presses, centrifuges, and rotary drum filters provide solid-liquid separation with effective cake washing and moisture control. - Catalyst Recovery
Candle filters, pressure leaf filters, and nutsche filters enable fine particle retention and recovery of valuable catalyst materials. - Polymerization
Rotary disc filters, vacuum belt filters, and tower press filters offer robust filtration in viscous slurries and aggressive chemical conditions. - Fermentation
Centrifuge liners, filter presses, and liquid filter bags ensure gentle solids separation and clarity of the fermentation broth. - Purification and Clarification
Candle filters and pressure leaf filters deliver high clarity and fine particle retention for polishing and final product quality.

Zeolite and catalyst production demands precise filtration to maintain particle purity, recover valuable solids, and ensure consistent process efficiency.
Our filter media is engineered to handle abrasive slurries, fine particles, and high-temperature drying. We support key process steps with reliable solutions that enhance product quality, reduce downtime, and improve yield in catalyst and zeolite production. The key process steps for filtration include:
- Washing and Purification
Vacuum belt filters, rotary drum filters, and candle filters ensure efficient solids recovery and thorough washing. - Solid-Liquid Separation
Filter presses, centrifuges, and liquid filter bags enable high retention and optimal cake release. - Drying
Filter bags and pleated elements for baghouses provide reliable dust capture in spray drying under high-temperature conditions. - Screening and Sifting
Screeners and sifters ensure accurate classification and reliable mesh performance in final product handling.

Silica production requires consistent filtration to manage abrasive slurries, ensure fine particle retention, and support efficient washing, drying, and screening processes.
Our robust filter media is engineered to handle the chemical, thermal, and mechanical demands of silica processing. From efficient cake washing to reliable dust collection and precise classification, we help you maintain product quality and minimize maintenance disruptions. The key process steps for filtration include:
- Washing and Purification
Filter presses, rotary drum filters, and liquid filter bags ensure thorough washing, solid recovery, and resistance to abrasion. - Drying (Spray Drying)
Filter bags and pleated elements for baghouses provide reliable dust control and withstand high temperatures and fine silica particles. - Screening and Sifting
Centrifugal vibro sifters and purifiers enable precise particle separation and long service life.

Filtration in pigment and lacquer production must ensure color consistency, fine particle retention, and stable dispersion in conditions with highly viscous and abrasive slurries.
We offer robust filter media designed for aggressive pigments and viscous lacquer dispersions. From solid recovery to ultra-fine clarification and dust control, our solutions improve product quality, reduce downtime, and support consistent, trouble-free operations. The key process steps for filtration include:
- Pigment Preparation
Centrifuges, pressure leaf filters, and liquid filter bags remove agglomerates and contaminants after wet milling. - Solid-Liquid Separation
Filter presses, rotary drum filters, rotary disc filters, and candle filters recover pigment solids with excellent cake release and throughput. - Clarification
Pressure leaf and candle filters ensure fine particle retention for consistent dispersion and high optical quality. - Drying
Baghouses with high-efficiency filter bags capture airborne pigment dust during drying and conveying. - Screening and Classification
Vibro/turbo sifters and plansifters ensure uniform particle size in final products.

Polymer production involves abrasive slurries, fine catalysts, and strict purity demands, making robust, high-efficiency filtration essential for stable, clean processing.
We provide filter media solutions engineered for polymer slurries, catalyst recovery, and fine particle control. From slurry separation to drying and classification, our products ensure high yield, low maintenance, and consistent quality in demanding polymer processes. The key process steps for filtration include:
- Polymer Slurry Separation
Centrifuges, rotary disc and drum filters, and vacuum belt filters separate polymer solids efficiently for post-polymerization. - Catalyst and Additive Recovery
Candle filters, nutsche filters, and filter presses retain valuable particles and resist chemical wear. - Washing and Purification
Rotary drum and disc filters and vacuum belt filters ensure thorough washing of polymer particles and beads. - Drying
Baghouses equipped with durable filter bags capture airborne dust during the drying of powders and pellets. - Screening and Classification
Vibro/turbo sifters and purifiers ensure particle size uniformity and flowability. - Liquid Pre-Filtration
Liquid filter bags remove unwanted solids from process liquids to protect equipment and improve product consistency.

Soda ash production involves abrasive slurries and high temperatures. Efficient filtration is essential to maintain throughput, ensure product purity, and protect downstream equipment.
Our filter media is engineered for abrasive carbonate slurries, continuous processing, and high dust loads. We deliver reliable separation, long filter life, and consistent product quality across carbonation, drying, and classification steps in soda ash production. The key process steps for filtration include:
- Carbonation
Vacuum belt filters, rotary drum filters, filter presses, centrifuges, and liquid filter bags remove solids and support clear liquid separation. - Drying
Baghouse filters with durable filter bags capture soda ash dust during spray drying and pneumatic transport under high-temperature conditions. - Screening and Sifting
Purifiers and vibro/turbo sifters ensure accurate particle sizing for consistent bulk handling and end-use performance.
Our Products
We combine extensive application expertise with a broad portfolio of filtration fabrics to ensure the optimal selection of filtration solutions to meet your specific requirements.
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Process Filtration Overview
Learn more about our process filtration solutions.

Powering Process Performance
Filtration is essential for achieving production efficiency, product quality, and environmental compliance in chemical manufacturing. With decades of expertise and a global presence, we help you meet today’s challenges safely and efficiently.
Customized Filtration for Complex Chemical Applications
We combine deep application know-how with full control over our value chain, from yarn production to finished filter media. This enables us to deliver solutions precisely matched to your process requirements, ensuring stable operation, high yield, and long-term performance.
Boost Efficiency, Minimize Losses
Our filtration solutions are engineered to improve throughput, reduce product loss, and extend service life. With optimized separation speed, consistent filtrate clarity, and mechanically robust filter media, you minimize downtime and operating costs while maximizing productivity.
Global Expertise, Local Support
Our global R&D and laboratory capabilities are backed by experienced local teams who understand your process environment. From fast troubleshooting to tailored delivery solutions, we provide responsive support wherever you operate.