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Purging System
Purging System
Steel Ladle Gas Stirring
Gas Purging System Ladle gas stirring
systems are required
for better homogenisation
of temperature and
composition,
inclusion trapping and
slag-metal refining reaction
of the molten steel.
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Ladle bottom after the heat Ladle gas purging plug
Position Description
PP1a/S16E-W Purge plug S1a Sleeve
PP Purge plug S Sleeve
1a Shape group 1a Shape group
S16 16 slits
E Wear indicator
W Withdrawal jack adaptor
WB-SQ1-S Well block DR80/60 Distance ring
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WB Well block DR Distance ring
SQ Square 80 Height of ring in mm
1 Shape group 60 Inner hole diameter in mm
S Block with sleeve
Shape group; 1a=270mm 2,2a,2b=360mm 3=450mm 4=520mm
Qualities
Meatacast ® -1850/MA
Tabular alumina & MA-Spinel raw materials
High resistance against molten steel and slag
Increased hot strength with addition of MA-spinel
Al 2 O 3 content 93%, MgO content 4.5%
Service limit 1850 °C/1750 °C permanent load
Metacast ® -1850
Tabular alumina raw materials
High refractoriness and strength
Al 2 O 3 content 97%
Service limit 1850°C/1750° permanent load
Gas Flow Test
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Each purge plug is tested before delivery for gas leakages and flow
rate with help of an automatic measuring system.
Models
Directional Models
Slit type plug
Ceramic plate type plug
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Non-directional Models
Porous type plug
Hybrid type plug
Dynamic Models
100% opening rate
Increased lifetime
Unlimeted gas flow
Custom made
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Slit Type (S)
Small gas bubbles
even at high flow
rates
Flow rate can be
adjusted with slit
design
Careful cleaning of
the plug after each
heat is necessary
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Slit Type (S)
Slit width can be reduced
further by addition of
stainless steel bands for
starting of the plug earlier
even when some of the
slits are clogged.
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Wear Indicator
Optical wear indicator is a
porous high alumina refractory
material with 32x32mm square
cross-section at a residual thickness
of 120mm of purge plug. When the
purge plug is at residual thickness of
120mm after several heats of use,
the indicator becomes visible during
cleaning of ladle after continous
casting. Due to porous nature of high
alumina wear indicator, a spot
32x32mm in dark color becomes
visible when observed from inside
the ladle. When the indicator becomes
visible, the purge plug has to be
replaced with a new one immediately.
Ceramic Plate Type (CP)
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Pressed and fired high
alumina ceramic plates
ensure excellent performance
of the plug by easy start of
gas flow at initial purging
Less wetting of the
ceramic plates help
cleaning of the plug
after the heat
Porous & Hybrid Types (POR)
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Pressed and fired
high aluminia porous
insert protected with
a dense surrounding
castable for non-
directional purging
purposes
Addition of slits in
the surrounding
castable result in
a combined purging
system (hybrid)
Dynamic Plug (DYN)
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100% opening rate
As the plug is always closed when the gas
pressure is released, steel infiltration into
the gap is prevented which allows for 100%
opening rate
Increased lifetime
Since there is no steel infiltration in the
gap after use, there is no need for a high
opening pressure to spall of the infiltrated
part of the plug, resulting in increased lifetime
Custom made
Gasflow/pressure configuration can be
controlled by different settings on the
pre tension of the bottom plate which means
that the plug can be custom made for various
metallurgical conditions
Unlimited gas flow
The construction with a gap that grows with
increased pressure makes it possible to
achieve practically unlimited gas flow
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Dynamic Plug (DYD)
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System Refractories
Well block & Mounting plate
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Distance ring Preinstalled sets
Replacement sets
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Accessoires
Extraction device Hot repair cap on replacement plug
Lifting hook on preinstalled sets
Seamless, gastight welding of bottom plate
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Non-Return Valve
Prevents steel infiltration due to sudden pressure drops in the line
Stationary or replaceable types available
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Safety Device
Replaceable safety device (multi-use)
Prevents steel leakages through purge plug
Acts as a distance ring with safety
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Flow Rate
LADLE GAS PURGING PLUG / FLOW RATES (NL/MINUTE)
POSITION FLOW POSITION FLOW POSITION FLOW
PP1a/S16E PP1a/POR PP1a/CP
1 bar 1.5 bar 1.5 bar 3 bar 1 bar 1.5 bar
minimum 557 678 minimum 204 445 minimum 171 241
maximum 594 708 maximum 283 486 maximum 287 400
average 575 690 average 240 465 average 220 320
PP2a/S16E PP2a/POR PP2a/CP
1 bar 1.5 bar 1.5 bar 3 bar 1 bar 1.5 bar
minimum 587 778 minimum 162 412 minimum 180 344
maximum 613 799 maximum 245 470 maximum 323 436
average 590 785 average 200 450 average 210 370
PP3/S24E PP3/POR PP3/CP
1 bar 1.5 bar 1 bar 1.5 bar 1 bar 1.5 bar
minimum 278 442 minimum 134 200 minimum 376 434
maximum 430 531 maximum 145 240 maximum 404 483
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average 370 490 average 138 220 average 395 470
* lo ng t er m st at i st i cal values mea sured at athmo s p h er ic co n d i ti on s b y c om pr es s e d a i r, th e y d o n ot r epr es en t g u ar a nt eed r an g e of
values.
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Innovative products for our customers
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Continous research in close cooperation with customers
Short and reliable delivery time
Convenient location for export to all destinations
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HEKA GmbH
Kai Hess
Klosterwiesen 6
D-67295 Bolanden
+49 (0)6352 - 70 57 80
+49 (0)6352 - 70 57 79
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