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A scale control technology used in the alumina process

December 2019
Gallery MAX HT® 1
Gallery MAX HT® 1


MAX HT® prevents the formation of impurities and contaminants in heaters resulting in optimized energy consumption and reduced emission.

MAX HT® is a scale inhibitor that eliminates sodalite scale from heat exchangers and contributes to the sustainability of the alumina industry. It reduces both energy and fresh water consumption, in addition to solving a legacy production challenge within the alumina industry. MAX HT® Technology prevents the formation of solid particles, it results in higher heat transfer rates reducing the need for energy to maintain high temperatures and enabling the generation of fresh condensate which is recycled in process, decreasing the injection of fresh water by 20%.

Label Date December 19, 2019
By Solvay
From Belgium
Maturity stage Medium and large scale commercialization

The environmental benefits

  • An estimated reduction of 0.54-3.9 billion kg of CO2 emissions, and 38-116 million kg of acid waste reduction when applied to the total alumina production from 20 plants
  • Billions of gallons of fresh water is saved annually

The Financial benefits

  • The average net savings ranges from $2-6 per ton of Alumina
  • Reduction in the cost of energy consumption and an overall increase in the productivity of the production process

Activity Region

  • /
  • Headquarters
  • Activity

Company Profile


Solvay is a global company driven by proud and committed chemists. Asking more from chemistry.

View company profile
Headquarters 1000 Brussels, Belgium
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The information set out above, is solely for the purposes of information and the Solar Impulse Foundation does not provide any guarantee as to its authenticity, completeness or accuracy. This information does not constitute investment advice or a recommendation to buy into, transact or to enter into any agreement with any of the parties or persons mentioned above. Potential investors or interested parties are solely responsible for their investment or business decisions and for performing any due diligence required by the circumstances. The innovator Solvay has asserted ownership of the intellectual property rights for images, videos, and content showcased above, affirming full and unrestricted usage rights, and has provided explicit permission for the Solar Impulse Foundation to publish such information designated as "public" in the application form.