Hearth furnaces are mainly used as melting units, but also as holding and homogenising furnaces before casting. Depending on the application they can be round or rectangular, tiltable or stationary. The required energy input is by means of burner systems such as Oxyfuel.
In the Oxyfuel process, the combustion processes are carried out by means of an oxygen burner (Oxyfuel burner) which is operated with pure oxygen or oxygen-enriched air as an oxidising agent. Messer has developed the family of Oxipyr burners for this purpose.
In comparison to burners which use air as an oxidant, Oxipyr burners provide a range of process technology advantages:
Higher combustion efficiency
Higher melting rate
Faster heating-up times
Lower fuel consumption
Higher processing temperatures possible
Faster reaction speeds
Lower exhaust gas levels
Lower production costs