ADDITIVE FOR FORMING A CORROSION-PROTECTION LAYER ON A REFRACTORY CLADDING OF A MELT FURNACE CONTAINING AN ALUMINIUM ALLOY MELT

摘要

The invention relates to an additive for forming a corrosion-protection layer on the surface of a refractory cladding, for example a refractory concrete cladding, of an aluminium alloy melt furnace, in the direct contact of the cladding material containing the additive with components of an aluminium alloy melt situated in the melt furnace, wherein the additive a) has at least one fluoride from the group of the following fluorides: aluminium fluoride (AlF3), barium fluoride (BaF2), strontium fluoride (SrF2) and b) a synthetically produced barium sulphate (BaSO4). The invention further relates to a binder, a refractory concrete mixture and also a refractory moulded brick containing the additive.