Hot Blast Stove

Blast furnace operation requires enormous volumes of preheated air. The hot-blast stove preheat that necessary air to temperatures of 2000°F to 2400°F. This air is delivered to the blast furnace tuyeres through a series of large, refractory-lined pipes called the hot-blast main and the bustle pipe.

Each blast furnace normally comprises three or four stoves that serve the furnace in sequence; that is, one or two stoves supply preheated air to the furnace while the remaining stoves are “on-gas.” When on-gas, combustion takes place in the combustion chamber of the stove and the hot gases are vented through the checker chamber, heating the checkers in the process. When “on-blast,” the cycle is reversed. A blast of cold air enters the stove from beneath the checkers, is heated as it passes through the hot checkers, and exits the stove through the hot-blast outlet to the hot-blast main.

During stove operation, temperatures may range from highs of 2200°F to 2600°F in the upper part of the combustion chamber, the dome, and the upper courses of checker brick to a low of 600°F beneath the checker columns.

Zoning of refractories is used to minimize the refractory costs. HWI recommends UFALA® MCR for the highest-temperature sections of the stove, UFALA® XCR at the intermediate-temperature locations, and KALA® for the lower-temperature sections. Since zoning combinations of products in a hot-blast stove are numerous, it is important to specify the design and operating parameters for a given stove to ensure that the most economical refractory product can be installed in each zone.

Refractory Solutions for Iron and Steel

Products
Hot Blast Stove

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Product Description
‘SAIRSET‘SAIRSET A wet, air-setting, fireclay mortar
60DB®60DB® A direct-bonded 60% magnesia, burned brick
ALADIN® 80ALADIN® 80 An 80% alumina brick
AMERICLASE 94AMERICLASE 94 A 65% magnesia gunning mix
AMERICLASE 98 SAMERICLASE 98 S A 97% magnesia, chemically bonded gunning mix
AMERICLASE HAMERICLASE H A 74% magnesia, dry ramming mix
AMERICLASE HCAMERICLASE HC A 65% magnesia hearth mix designed for stacking at steep angles of repose for use where material is applied by a spreader.
AMERICLASE HDAMERICLASE HD A 65% magnesia hearth mix designed for stacking at steep angles of repose for use where material is applied and compacted by hand.
AMERICLASE HPAMERICLASE HP A 78% magnesia, dry ramming mix
ANKORBOND C®ANKORBOND C® A wet, resin bonded, heat setting high alumina mortar
BASIC 187 DV-88DBASIC 187 DV-88D A 90% magnesia, dry, heat setting vibratable
BASIC 187 GM-60BASIC 187 GM-60 A 60% magnesia, silicate bonded gunning mix
BASIC 187 GM-75BASIC 187 GM-75 A 75% magnesia, silicate bonded gunning mix
BASIC 187 GM-88BASIC 187 GM-88 An 88% magnesia, silicate bonded gunning mix
BASIC 187 GM-88 RHBASIC 187 GM-88 RH An 88% magnesia gunning mix with a dual binder system
BASIC 187 GM-90BASIC 187 GM-90 A 90% magnesia, chemically bonded gunning mix
BASIC 187 GM-92BASIC 187 GM-92 A 92% magnesia, chemically bonded gunning mix
BASIC 187 GM-93BASIC 187 GM-93 A 93% magnesia, chemically bonded gunning mix
BAYONET MORTARBAYONET MORTAR A high alumina, carbon containing, heat setting mortar
BOF 2812BOF 2812 A magnesia carbon brick for Basic Oxygen Furnace Linings
BOF 411BOF 411 A magnesia carbon brick for Basic Oxygen Furnace Linings
BOF 412BOF 412 A magnesia carbon brick for Basic Oxygen Furnace Linings
BOF 711BOF 711 A magnesia carbon brick for Basic Oxygen Furnace Linings
BOF 712BOF 712 A magnesia carbon brick for Basic Oxygen Furnace Linings
BOF 713BOF 713 A magnesia carbon brick for Basic Oxygen Furnace Linings
BOF 722BOF 722 A magnesia carbon brick for Basic Oxygen Furnace Linings
BOF 732BOF 732 A magnesia carbon brick for Basic Oxygen Furnace Linings
BOF 811BOF 811 A magnesia carbon brick for Basic Oxygen Furnace Linings
BOF 812BOF 812 A magnesia carbon brick for Basic Oxygen Furnace Linings
BOF 822BOF 822 A magnesia carbon brick for Basic Oxygen Furnace Linings
BOF 831BOF 831 A magnesia carbon brick for Basic Oxygen Furnace Linings
BOF 832BOF 832 A magnesia carbon brick for Basic Oxygen Furnace Linings
BOF 911BOF 911 A magnesia carbon brick for Basic Oxygen Furnace Linings
BOF 921BOF 921 A magnesia carbon brick for Basic Oxygen Furnace Linings
BOF 932BOF 932 A magnesia carbon brick for Basic Oxygen Furnace Linings
BOF TANKBOF TANK A magnesia carbon brick for Basic Oxygen Furnace Linings
CLEANCOAT 6MCLEANCOAT 6M A magnesia troweling mix
CLIPPER® DPCLIPPER® DP A super duty fireclay brick
COMANCHE®COMANCHE® A carbon bonded, alumina magnesia brick
COMANCHE® FACOMANCHE® FA A carbon bonded, alumina magnesia brick
COMANCHE® GOLDCOMANCHE® GOLD A carbon bonded, alumina magnesia brick
COMANCHE® PLATINUMCOMANCHE® PLATINUM A carbon bonded, alumina magnesia brick for enhanced impact resistance in ladle bottoms.
COMANCHE® SLCOMANCHE® SL A carbon bonded, alumina magnesia brick
CORAL® BPCORAL® BP A burned, phosphate bonded 80% alumina brick
D-CAST TRC-OR PLUSD-CAST TRC-OR PLUS An ultra-low cement, high Alumina castable with a silicon carbide plus carbon addition
D-CAST® 85 GOLD CASTABLED-CAST® 85 GOLD CASTABLE An 85% alumina, low moisture castable
D-CAST® 85TMCC CASTABLED-CAST® 85TMCC CASTABLE An ultra-low cement, high alumina castable
D-CAST® XZR-ORD-CAST® XZR-OR An ultra-low cement, high alumina castable with 26% silicon carbide
DAUBPAXDAUBPAX An 86% silica, plastic refractory
DESCON® S97 ADTECHDESCON® S97 ADTECH A vitreous silica-based castable
DOSSOLITE 1400-72DOSSOLITE 1400-72 A 77% magnesia, fine grained mix designed for spraying
DV-38®DV-38® An 80% alumina, burned, phosphate bonded brick
EAF 211 ASEAF 211 AS A magnesia-carbon brick for EAF service
EAF 212 ASEAF 212 AS A magnesia-carbon brick for EAF service
EAF 213EAF 213 A magnesia-carbon brick for EAF service
EAF 221EAF 221 A magnesia-carbon brick for EAF service
EAF 222 ASEAF 222 AS A magnesia-carbon brick for EAF service
EAF 231EAF 231 A magnesia-carbon brick for EAF service
EAF 231 ASEAF 231 AS A magnesia-carbon brick for EAF service
EAF 232EAF 232 A magnesia-carbon brick for EAF service
EAF 232 ASEAF 232 AS A magnesia-carbon brick for EAF service
EAF 233 ASEAF 233 AS A magnesia-carbon brick for EAF service
EAF 521 ASEAF 521 AS A Mag-Carbon brick for general use in EAF's with high FeO slags and high O2 ppm steels.
EAF 621 ASEAF 621 AS A magnesia-carbon brick for EAF service
EAF 622 ASEAF 622 AS A magnesia-carbon brick for EAF service
EAF 623 ASEAF 623 AS A magnesia-carbon brick for EAF service
EAF 631 ASEAF 631 AS A magnesia-carbon brick for EAF service
EAF 632 ASEAF 632 AS A magnesia-carbon brick for EAF service
EAF 822 AMSEAF 822 AMS A magnesia-carbon brick for EAF service
EAF 832 AMSEAF 832 AMS A magnesia-carbon brick for EAF service
EAF 833 AMSEAF 833 AMS A magnesia-carbon brick for EAF service
EAF 8632 ASEAF 8632 AS A magnesia-carbon brick for EAF service
EAF 8831 ASEAF 8831 AS A magnesia-carbon brick for EAF service
EAF 8832 AMSEAF 8832 AMS A magnesia-carbon brick for EAF service
EAF 8832 ASEAF 8832 AS A magnesia-carbon brick for EAF service
EAF 8833 ASEAF 8833 AS A magnesia-carbon brick for EAF service
EAF BB1EAF BB1 A magnesia-carbon brick for EAF service
EXPRESS®-27 PLUSEXPRESS®-27 PLUS A 50% alumina, cement bonded, self flowing castable
FASKAST® 75 PLUSFASKAST® 75 PLUS An ultra-low cement, high alumina castable
FASKAST® 80FASKAST® 80 An ultra-low cement, high alumina castable
FUSECRETE® CFUSECRETE® C An high alumina course aggregate castable
FUSIL® CASTABLE 820 IFUSIL® CASTABLE 820 I A fused, silica-based castable
GR-FG CASTABLEGR-FG CASTABLE A chemically bonded magnesia castable
GR-FG RAMMING MIXGR-FG RAMMING MIX A magnesia ramming mix
GREENAL®-80GREENAL®-80 An 80% alumina, dry pressed brick
GREENAL®-85 HPGREENAL®-85 HP 85% Alumina, Dry Press Brick designed for superior steel ladle performance versus standard 80% alumina brick.
GREENGUN®-70 P PLUSGREENGUN®-70 P PLUS A 70% alumina, phosphate bonded gunning plastic
GREENGUN®-85 P PLUSGREENGUN®-85 P PLUS An 85% alumina, phosphate bonded gunning plastic
GREENLITE®-45-L GR ON-LINE®GREENLITE®-45-L GR ON-LINE® A 2500°F rated lightweight gunning mix
GREENSET®-80 BHGREENSET®-80 BH An 80% alumina, air setting mortar
GREENSET®-85 PGREENSET®-85 P An 80% alumina, phosphate bonded mortar
GREENTHERM 23 LIGREENTHERM 23 LI A 2300°F rated insulating firebrick
GREENTHERM 26 LIGREENTHERM 26 LI A 2600°F rated insulating firebrick
GREENTHERM 28 LIGREENTHERM 28 LI A 2800°F rated insulating firebrick
GREFCON® 98 SPGREFCON® 98 SP A 3300°F, spinel-containing castable
GREFCON® 98 SPLGREFCON® 98 SPL A 3300°F, spinel-containing castable
H-W 3-75H-W 3-75 A high alumina, burned, phosphate bonded brick
HARWACO BOND (DRY)HARWACO BOND (DRY) A 50% alumina, air setting, dry mortar
HARWACO BOND (WET)HARWACO BOND (WET) A 50% alumina, air setting, wet mortar
HOT BANK 19HOT BANK 19 A dolomite based dry ramming mix
HOT BANK 53HOT BANK 53 A dry ramming mix composed of sintered dolomite and magnesia
HP-CAST ® 94MA-CHP-CAST ® 94MA-C A high-purity alumina, spinel-containing, ultra-low cement, coarse castable
HP-CAST ® ULTRAHP-CAST ® ULTRA A high purity alumina, spinel forming, ultra-low cement castable
HP-CAST ® ULTRA VCHP-CAST ® ULTRA VC A high-purity alumina, spinel-forming, ultra-low cement castable
HP-CAST 93SHP-CAST 93S High-Purity Alumina, Spinel-Containing, Ultra-Low Cement Castable
HPV®-ESX CASTABLEHPV®-ESX CASTABLE A fused silica castable designed for thermal shock resistance
HW-BF 55HW-BF 55
HW-BF 60HW-BF 60
HW-CO SHDHW-CO SHD A high-density 95% silica brick for coke ovens.
HW-CO SRDHW-CO SRD A regular-density 95% silica brick for coke ovens and hot blast stoves.
HW-CO SRDAHHW-CO SRDAH A 95%, air-rammed silica brick for coke ovens.
INSBLOK®-19INSBLOK®-19 A 1900 F rated mineral wool block
INSBOARD 2300 LDINSBOARD 2300 LD A 2300°F Low Density Vacuum-Formed Ceramic Fiber Board
INSWOOL® PUMPABLEINSWOOL® PUMPABLE 2300°F Ceramic Fiber Pumpable Material - formulated for pumping with special equipment.
INSWOOL®-HP BLANKETINSWOOL®-HP BLANKET A 2300°F rated, alumina silica ceramic fiber blanket
INSWOOL®-HTZ BLANKETINSWOOL®-HTZ BLANKET A 2600°F rated, alumina silica zirconia ceramic fiber blanket
IRONMASTER®IRONMASTER® An 81% alumina brick with a silicon carbide and carbon addition
ISO-STAR MX2ISO-STAR MX2 An AMC material that may be Iso-Pressed for use as ladle well blocks and pocket blocks
ISO-STAR® MCISO-STAR® MC An Iso-Pressed magnesia and graphite ladle weel block and pocket block
ISOTAP FISOTAP F An Iso-Pressed magneisa and graphite taphole
ISOTAP LCISOTAP LC An Iso-Pressed magneisa and graphite taphole
ISOTAP MC1ISOTAP MC1 An ISOPRESS mix for tapholes
ISOTAP®ISOTAP® An Iso-Pressed magneisa and graphite taphole
KALA®KALA® A 50% alumina brick
KALA® HPC CHECKERSKALA® HPC CHECKERS A 50% alumina brick
KALA® SRKALA® SR A 50% alumina brick designed for thermal shock resistance
KAST-O-LITE 23 LI PLUSKAST-O-LITE 23 LI PLUS A 2300°F rated lightweight gunning mix
KAST-O-LITE® 19 L PLUSKAST-O-LITE® 19 L PLUS A 1900°F rated lightweight castable
KAST-O-LITE® 50-25 PLUSKAST-O-LITE® 50-25 PLUS A 2500°F low-density insulating castable
KORUNDAL XD®KORUNDAL XD® A 90% alumina, mullite bonded brick with low porosity
KORUNDAL® MORTARKORUNDAL® MORTAR A 90% alumina, heat-setting mortar
KRUZITE®-70KRUZITE®-70 A 70% alumina brick
KS-4V GR PLUSKS-4V GR PLUS A fireclay based, conventional cement gunning mix
KS-4V PLUSKS-4V PLUS A fireclay based, conventional cement castable
KX-99®KX-99® A high fired, super duty fireclay brick
KX-99®-BFKX-99®-BF A high fired, super duty fireclay brick
LADLE SL TANKLADLE SL TANK A magnesia carbon brick
LO-ABRADE® GR PLUSLO-ABRADE® GR PLUS A 2600°F dense, abrasion-resistant, gunning castable
LOTHERM® RKLOTHERM® RK High Strength Insulating Brick - 101 pcf
MAGNUM XL10FMAGNUM XL10F Magnesia-Carbon brick for Steel Ladle service
MEXI-KOMO®MEXI-KOMO® A dry, heat-setting, super duty mortar
MIZZOU® CASTABLE PLUSMIZZOU® CASTABLE PLUS A 3000°F rated high alumina castable
NARCARB® BSCNARCARB® BSC A carbon bonded, alumina-silicon carbide brick
NARCARB® ZP PLASTICNARCARB® ZP PLASTIC A 65% alumina, slag resistant refractory plastic
NARCOGUN® 50 BGNARCOGUN® 50 BG A 50% alumina gunning mix
NARCOGUN® 70 BGNARCOGUN® 70 BG A 70% alumina gunning mix
NARCOGUN® BSC-DSNARCOGUN® BSC-DS A trough gunning mix
NARCON® 65 CASTABLENARCON® 65 CASTABLE A 65% alumina, low-cement castable
NARCON® 70 CASTABLENARCON® 70 CASTABLE A 70% alumina, low moisture castable
NARCOTUN® 72NARCOTUN® 72 A 72% magnesia, dry, heat setting vibratable
NARCOTUN® 83NARCOTUN® 83 A 86% magnesia, dry, heat setting vibratable
NARCOTUN® 83XHNARCOTUN® 83XH A 87% magnesia, dry, heat setting vibratable with an extra hard bond
NARCOTUN® 87NARCOTUN® 87 A 87% magnesia, dry, heat setting vibratable
NAREZ AM5NAREZ AM5 A magnesia carbon brick for Basic Oxygen Furnace Linings
NARMAG EAF RAMNARMAG EAF RAM Magnesia-Chrome-Alumina based, Heat-Setting, Ramming Mix
NARMAG® 60 DBNARMAG® 60 DB A direct-bonded, 65% magnesia, 18% chromia burned brick
NARMAG® 95 CASTABLENARMAG® 95 CASTABLE A 95% magnesia castable
NARMAG® FGNARMAG® FG A 19% chromia, rebonded fused-grain magnesia-chrome burned brick
NARMAG® HRBNARMAG® HRB A 97% magnesia, burned brick
NARMAG® L MORTARNARMAG® L MORTAR A magnesia dipping mortar
NARMAG® MORTAR HEAT SETNARMAG® MORTAR HEAT SET A basic mortar
NARPHOS® 90R RAM MIXNARPHOS® 90R RAM MIX A high-alumina ramming mix
NARSPRAY® M-77NARSPRAY® M-77 A 77% magnesia, ultra-lightweight spray mix
NARTAR® 7NARTAR® 7 A magnesia, pitch impregnated burned brick
NARTAR® XRNARTAR® XR A magnesia, pitch-impregnated burned brick
NISIC 20NISIC 20 A nitride bonded, silicon carbide brick
NO. 36 REFRACTORY CEMENTNO. 36 REFRACTORY CEMENT A wet, air setting, high alumina mortar
NOZZLE SET 90PNOZZLE SET 90P High Purity Alumina chemical bond wet mortar
ON-LINE® 70GON-LINE® 70G A 70% alumina, rapid turn-around, low-cement castable
PHANTUM® XL127PHANTUM® XL127 A magnesia carbon brick for steel ladle applications
PHANTUM® XL148 SUPERPHANTUM® XL148 SUPER A magnesia carbon brick for steel ladle applications
PLASTECH® 50P STDPLASTECH® 50P STD A 50% alumina, phosphate bonded refractory plastic
PLASTECH® 70P STDPLASTECH® 70P STD A 70% alumina, phosphate bonded plastic refractory
PLASTECH® 85P STDPLASTECH® 85P STD An 85% alumina, phosphate bonded plastic refractory
PLASTECH® 90P FINEPLASTECH® 90P FINE A fine grained, 90% alumina, phosphate bonded refractory plastic
PLASTECH® 90P STDPLASTECH® 90P STD A 90% alumina, phosphate bonded refractory plastic
PLASTECH® RUBY®PLASTECH® RUBY® An alumina-chromium, phosphate bonded refractory plastic
PNEULITE® SPRAY 22PNEULITE® SPRAY 22 A 2200°F, insulating shotcrete mix
PRISM® DCPRISM® DC High Alumina (96%), Cast Fired Shapes
RENEGADE® BL8HRENEGADE® BL8H A magnesia carbon brick for steel ladle applications
RENEGADE® XL10FRENEGADE® XL10F A magnesia carbon brick for steel ladle applications
RUBY® RAMMING MIXRUBY® RAMMING MIX A phosphate-bonded, alumina-chromium ram mix
RUBY®190 KSV MORTARRUBY®190 KSV MORTAR An alumin-chrome mortar
S142®S142® A semi-rebonded 64% magnesia, 17% chrome burned brick
S145®S145® A semi-rebonded 60% magnesia, 20% chrome burned brick
SCHIEBERSAND® BO-2SCHIEBERSAND® BO-2 A dry, granular low-carbon material used for well fill for slide gates.
SENTINEL® RC PLUSSENTINEL® RC PLUS A portland cement bonded, high strength, general purpose castable
SFG®SFG® A 21% chromia-containing, rebonded magnesia-chrome brick
SFG®-USSFG®-US A magnesia-chrome brick
SHAC ADTECH®SHAC ADTECH® An extra-high-alumina castable
SHOT-TECH® 45 LISHOT-TECH® 45 LI A fireclay based, low-cement shotcrete mix
SHOT-TECH® 60SHOT-TECH® 60 A 60% alumina, low-cement shotcrete mix
SHOT-TECH® 80SHOT-TECH® 80 An 80% alumina, low-cement shotcrete
SHOTKAST® 65SHOTKAST® 65 A high-alumina shotcast castable
SHOTKAST® HMCSHOTKAST® HMC A high-alumina shotcast castable
SHOTKAST® TRWSHOTKAST® TRW A shotcast trough castable
SILSETSILSET An air-set silica mortar for coke oven brick
SLID®SLID® An 18% chromia, magnesia-chrome burned brick
SUPER HYBOND® 60 PLUSSUPER HYBOND® 60 PLUS A 60% alumina, mullite, air-setting, plastic refractory
SUPER HYBOND® PLUSSUPER HYBOND® PLUS A high-strength, air-setting, super-duty, plastic refractory
SUPER NARTAR® RSUPER NARTAR® R A magnesia carbon brick for Basic Oxygen Furnace Linings
T-WELL 80T-WELL 80 A high alumina, fine graind tamping mix
TAP-312 ASTAP-312 AS A Mag-Carbon mix for hydraulically-pressed taphole segments.
TAP-322 ASTAP-322 AS A Mag-Carbon mix for hydraulically-pressed taphole segments.
TAP-332 ASTAP-332 AS A Mag-Carbon mix for hydraulically-pressed taphole segments.
TAP-332 FTAP-332 F A Mag-Carbon mix for hydraulically-pressed taphole segments.
TAP-431 ASTAP-431 AS A Mag-Carbon mix for hydraulically-pressed taphole segments.
TAP-432 ASTAP-432 AS A Mag-Carbon mix for hydraulically-pressed taphole segments.
UFALA®UFALA® A 60% alumina brick shape
UFALA® MCRUFALA® MCR A 60% Alumina - Andalusite Brick Shape
UFALA® XCRUFALA® XCR A 60% Alumina - Andalusite Brick Shape
ULTRA-EXPRESS® 70ULTRA-EXPRESS® 70 A 70% alumina, free flowing, ultra-low cement castable
ULTRA-GREEN® 57AULTRA-GREEN® 57A A 57% alumina, andalusite base, ultra-low cement castable
ULTRA-GREEN® 60 PLUSULTRA-GREEN® 60 PLUS A 60% alumina, low cement castable
UNACAST® 1005XUNACAST® 1005X An 80% alumina, thermal shock resistant, pre-cast shape
VARNON® AHVARNON® AH Air Ram (53% Alumina) Fireclay Brick
VERSAFLOW® 45 C PLUSVERSAFLOW® 45 C PLUS A coarse, fireclay-based, low-cement castable for high-abrasion environments
VERSAFLOW® 45 PLUSVERSAFLOW® 45 PLUS A fireclay based, low-cement castable
VERSAFLOW® 55/AR C PLUSVERSAFLOW® 55/AR C PLUS A 55% alumina, coarse aggregate, low-cement castable
VERSAFLOW® 57A PLUSVERSAFLOW® 57A PLUS An andalusite containing, low-cement castable
VERSAFLOW® 60 PLUSVERSAFLOW® 60 PLUS A 60% alumina, low cement castable
VERSAFLOW® 70 C PLUSVERSAFLOW® 70 C PLUS A 70% alumina, coarse aggregate, low-cement castable
VERSAFLOW® 70 PLUSVERSAFLOW® 70 PLUS A 70% alumina, low-cement castable
VERSAFLOW® 80 C PLUSVERSAFLOW® 80 C PLUS An 80% alumina, coarse aggregate, low-cement castable
VIBE-TITEVIBE-TITE A 70% alumina, dry vibratable

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