Primary aluminium smelting generates large amounts of hydrogen fluoride gas (HF). Worker safety and ambient air quality concerns require that HF be monitored at several locations in smelters. Traditionally, a variety of chemical sampling methods have been used for HF monitoring in and around smelters. However, these methods are labour intensive and require ongoing maintenance and consumables.

During the past decade, laser based HF analyzers have been replacing the traditional methods. Laser analyzers are compact, robust and reliable and provide accurate HF data. Fast response times that enable easy correlation of high HF emissions with work practices.

Our technology is used to optimize and improve operational and management techniques to:

  • Reduce fugitive HF emissions to protect the environment
  • Give continuous and instantaneous readings to enhance operational efficiency
  • Most importantly, safeguard people in and around the smelters

When it comes to continuous pot room roof monitoring Boreal is the clear choice:

  • Cannot be fouled, poisoned, or mechanically over ranged: very reliably delivers accurate readings even after repeated high concentration HF exposures.
  • Minimal Maintenance: checks internal reference cell every minute, robust design, and requires no consumables to operate.
  • As instantaneous response times as you can get: significantly faster response times than other gas detection companies/technologies.
  • Low (overall or amortized) cost of ownership (because they can last +20 years) and low operation and maintenance costs.
  • No interference with other gases and No False Alarms: “It finds exactly what you’re looking for.

Boreal Laser is the leading supplier of HF monitors for environmental and process control in aluminium smelters worldwide. Let us show you how these products can benefit your facility.

Aluminium Smelter Applications:

  • Continuous pot room roof monitoring

    No other gas detection company has more roof-line installations than Boreal. Our open-path HF monitoring analyzer is tailor made for the unique application. We have developed and engineered our system to function with pot rooms up to 750m. The continuous concentrations of HF, high magnetic fields, and elevated temperatures do not effect the operation of our products. When it comes to continuous pot room roof monitoring Boreal is the clear choice.

    Typically, the analyzer will be mounted in the pot lines control room or electrical room for easy access and the open-path heads are mounted in the roof-lines. The complete setup includes its own data logger and historian so Boreal’s setup can act as a stand alone system. A number of different communication modules can be purchased to integrate the data to your facilities control system.


  • HF scrubber inlet/outlet and stack monitoring

    Boreal’s experience in providing process control and environmental monitoring analyzers for scrubber inlet/outlet and stack is second-to-none. The analyzers ability to accurately measure HF concentrations without contacting or obstructing the flow of gas provides a simple-to-install and cost effective monitoring solution.

    The implementation of Boreal’s analyzers in scrubber inlet/outlet can provide vital process data to optimize the effectiveness of scrubbers.


  • Bag-house HF breakthrough detection

    With lower commodity prices, rising power costs, and increased environmental emissions standards managing a smelter operation has become more difficult than ever. Finding better ways to optimize your process has never been more important. Boreal has developed a solution to ensure you are getting the most out of you bag-house.

    This eight probe installation is monitoring individual baghouses that provide immediate indication of bag breaks and enables rapid response to increased stack HF emissions.


  • Fenceline Monitoring

    It is important to not only monitor HF emissions inside the smelter but it is important to make sure the hazardous gas does not drift into other operational areas or surrounding communities. Being proactive in actively monitoring your fence line provides peace-of-mind that your operation is within compliance and is not affecting surrounding communities.


  • Spent Anode HF Monitoring

    A large amount of HF is emitted from cooling anodes and during the storage/disposal phase. Efforts should be made to limit the workers exposure to the harmful HF emissions. Boreal has a number of solutions to provide continuous and instantaneous monitoring for spent anodes.


  • Crane cab HF monitoring

    There is no better way to measure fugitive HF emissions than when you are directly above the source. Boreal has the ideal measurement solution for crane cab HF monitoring. This measurement technique will aid in increasing the efficiency to reducing the fugitive emissions to meet and exceed environmental emissions standards.

    Crane Cab

  • Worker exposure monitoring

    For out-of-normal operation work on pots it is important to monitor if you are exposing your employees to dangerous levels of HF. The adverse effects of HF to human health is known and all safeguards should be in place to minimize the exposure. Our portable open-path system is perfect for measuring the fugitive HF emissions from the pots.