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Air Liquide in the UK

Select a step where Air Liquide intervenes in your value chain.


Production of non-ferrous metals (Copper, Nickel and Gold) relies on 2 main routes: Pyro-metallurgy (thermal treatment) and hydrometallurgy (chemical treatment through aqueous leaching). The choice of the relevant technology depends on numerous factors and the present share between both routes is very different from one to another metals. Nevertheless, there are signs of significant development for the hydro route compared to the conventional pyro one, which are motivated by the possibility to treat a larger range of ores (especially low grade ores) and even to re-treat dumps, the lower CAPEX, the emergence of new processes/technologies enabling higher productivity and metal recovery.

Customers in gold industry, especially when located “in the middle of nowhere” are asking for cost effective and not sophisticated processes/equipments. They also expect a global solution from their oxygen supplier in terms of injection means and monitoring, in order to optimize their process and their costs. This has been achieved within our ALDOC offer developed for partnerships with engineering companies.

Engineering Groups facilitates the promotion of our ALDOC offer. In addition, such partnerships are also opportunities to be associated to new “attractive” processes.

Gas-Liquid Mass Transfer

  • kLa – Volumetric Mass Transfer Coefficient
  • kLa = mUGx(P/V)yµZ
  • kLa is directly proportional to gas velocity and power to volume ratio
  • High kLa means high efficiency

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