Purefrax® Hot Gas Filter Candles

The Unifrax Purefrax® hot gas filter candles are designed to remove particulate matter with filtration efficiencies exceeding 99%. Purefrax® Hot Gas Filter elements were developed and commercialized in 1996, originally for the Aluminum industry to solve an issue of fires happening within the baghouse filter. Sparks were being carried over in the gas stream and setting fire to the fabric filters. Purefrax filters were developed using our high temperature fibers and are designed to work in the same way as a traditional fabric filter but with much higher temperature capability and insensitivity to sparks. Since 1996, the benefits of the product mean that they have been used in a variety of applications from incineration to product recovery to power generation (such as Waste-to-energy).

Key features of both the Purefrax and Topfrax® hot gas filters include:

  • A high temperature use limit
  • Compatibility with sorbents
  • Non-combustibility
  • Corrosion resistance.

Designing pollution control equipment around Purefrax and Topfrax® hot gas filtration media saves CAPEX and OPEX and reduces the footprint of the installation while providing extended service life and energy savings.


Safety Data Sheets

Purefrax® Hot Gas Filter Candles

Product Information Sheet

Application Story

Purefrax® Hotgas Filtration

Fiberfrax Purefrax hot gas filtration for iron oxide catalyst recovery.

Application Story

Purefrax® Hot Gas Filtration

Purefrax hot gas filtration for soil remediation applications.

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