Higher superstructure at the entrance zone – crown execution
Flat cover blocks at downstream zones
Optimally calculated distances from the furnace centreline to each forehearth to minimise the risk of glass flow short-circuiting and to optimise the forehearth entrance temperature
Differentiated control sections for accurate temperature adjustment
DIMENSIONS
Width individually customised depending on total pull, required temperatures and residence time
Length individually customised to available space, number and arrangement of forehearths
Depth individually customised depending on total pull, required temperatures, residence time and glass colour
COOLING SYSTEMS
Several natural or forced cooling systems are available which are adapted to the design of each distributor:
Radiation openings
Direct cooling system (individually adjustable)
STEEL WORK
Assembly of the forehearths follows conventional design
Substructure refractories are enclosed in steel casings
Braced frames support the superstructure
REFRACTORIES
Designed to meet modern technical requirements to achieve optimal thermal homogeneity combined with minimum energy requirement
Channel blocks of zircon mullite, fused cast AZS or alumina material
Forehearth superstructure in sillimanite material and premium insulating refractory materials
CORA® MIXTURE HEATING SYSTEM
Constant air/gas Ratio
Safety switch-off system (in accordance with DIN EN 746-2)
Automatic lambda control (optional)
Preassembled skids for easy installation including pipework
Used at distributors and forehearths (GCS® Series 200 and 301-advanced)
COOLING EQUIPMENT FOR DISTRIBUTORS AND FOREHEARTHS
Customised cooling fan layout
Alternatively two central cooling air fans for all air cooling systems, one in operation and one as stand-by
Radiation and/or flue gas openings can be operated manually or automatically
MEASUREMENT AND CONTROL SYSTEM
Fully automatic temperature control loops in each zone
Spout heating can be controlled manually or automatically
Different types of temperature measurements (thermocouples or pyrometers) are available for each zone
Grid-measurement in equalising zone with K-factor calculation, according to Emhart 9 point formula
All measuring and control instrumentation housed in a completely assembled and wired control panel
FEATURES
“Blind” connection possible for the subsequent installation of an additional forehearth
Opening for the glass level measuring device
Tailor-made for optimised pre-conditioning of the glass
Different cooling systems are available and adapted to the specific requirements
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