Vacuum filters for process slurry dewatering

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Reliable dewatering with vacuum filtration

Cost-effective solid-liquid separation technology is essential to the economical production of solids or filtrate in a variety of industries. To achieve this, the plant engineer faces a wide selection of filter technology. The chosen technology should achieve the desired solid and filtrate properties and provide reliable operation, as well as offer low installation, operating and maintenance costs.

The purpose of a vacuum filter is to filter the slurry or pulp, using a vacuum as the drying agent to pull the moisture from the slurry and create a filter cake of solids. Vacuum filters operate continuously. Filtering time is dependent on cake thickness, temperature and density of the pulp. We offer multiple design options and customisations to meet your process requirements, such as washing or steam addition.   

 

With our global breadth and depth of experience in vacuum filtration applications, we are well-positioned to assist you with sizing and configuring a filter solution to match your needs. Our process engineers have considerable expertise in filter selection, flow-sheet development, material balances and ancillary equipment selection for every phase of your project. 

 

The three main vacuum filter designs comprise belt filters, disc filters and drum filters. Our product offering includes:

Horizontal belt filters

Can be applied to many different slurries, including fibrous materials, fine slimes and coarse granular solids. These vacuum filters provide high extraction efficiency, low cake moisture, increased production, and reduced operating costs, while achieving maximum filtration area.

Disc filters

Slurry and mechanically agitated; best used when dewatering free-settling solids to form a non-binding cake, especially applicable where large filtration areas are required. We also offer an efficient line of large-diameter disc filters, press belt drum filters, precoat drum filters, and lime mud filters.

Drum filters

Available in standard or custom-engineered designs, with an extra-heavy-duty version also available. The unique capabilities of drum filters provide the widest application range of any continuous vacuum filter, offering the operating flexibility to handle either dewatering, washing or clarification applications.

Horizontal pan filter

Applies advanced technology for economic filtration of fast-filtering products. This is a continuous vacuum filter designed for economic filtration of granular, fibrous and coarse fast-settling solids, including cake washing and drying, if required.

Indexing belt filter

Versatile filtration and modular design. This is a vacuum dewatering filter specifically developed for cost-effective liquid-solid separation in demanding process environments.

Solvent oil and propane dewaxers

Designed and constructed for the most efficient method of processing petroleum base oil lubricating stocks to produce wax-free oil and oil-free wax. Propane dewaxing is used where refinery logistics prefer available propane over other solvents.

Dedication to excellence

As a global leader in separation technology, we are constantly looking at ways of improving operating efficiencies and ease of maintenance of our equipment. We continually develop new technologies, upgrades and programs that will enhance your equipment’s performance.

 

Our dedicated filtration team is here to serve your needs. Our extended offerings include parts, filter media, service, repairs, rebuilds, upgrades, service contracts, value-added solutions, and special inventory programs. Our testing and development laboratory is available to analyse new and used samples, as well as process slurries, to optimise filtration processes and maximise filter life.

 

Custom-engineered designs and systems 

We offer the experience, support and resources of highly skilled process, research and design engineers. Using our decades of application experience, we can design and implement the most efficient and effective filtration solutions available, building a vacuum filter that is exactly suited to your specific needs and requirements.



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