In many areas of the chemical and related types of industry molten salts are employed as a heat carrier to heat reactors and autoclaves. There they fulfil a central task in the upper temperature range of chemical synthesis.
Molten salts are frequently eutectic mixtures of alkali and earth alkali salts. This is based on the physical phenomenon that the melting point of the salt mixture, known as the eutectic, is lower than the melting point of the particular pure salt.
Rheinhütte Pumpen has a submersible chemical pump especially for molten salt plants. This has heat resistant materials for the temperature range in question and a high fatigue strength.