This special appliance is
used in the metallurgy for heating of converters and ladles as well as burning
out of the refractory wall of these appliances. For this purpose a special
long-flame facility is applied. Its fuelling takes place generally with natural
gas or, sometimes with other gases. These mentioned facilities are applied in
horizontal or perpendicular position in the capacity range of 1-4 MW.
Burner is fixed on a
special tilting mechanism, which allows the required moving to the throat of
the converter and turning the burner mouth to the converter. The flue gas
leaving the burner penetrates to the space of the converter and generating
intensive flow, making possible this way the uniform heat distribution. The
operation of burner takes place from the control room by remote control.
For operation of the
burner 20% of the total as condensed air supply is required. The rest which is
needed for the combustion will ejected from its neighbourhood. These special
firing appliances can work on ventilation combustion air supply, or such
versions can be also manufactured, which are fuelled partly with enriched
The firing facility with
perpendicular flame axis is protected with a refractory wall from the hot flue
gases discharging from the internal space. This umbrella also provides a
closing for the throat of the ladle ensuring in this way better efficiency
The advantage of oxygen
enrichment system over conventional ones is that this facility can provide
higher flame temperatures resulting shorter processing time.