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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.

Products
Hot Blast Stove

Product SDS
‘SAIRSET A wet, air-setting, fireclay mortar
60DB® A 60% magnesia, burned brick English
ALADIN® 80 An 80% alumina brick
AMERICLASE 94 A 65% magnesia gunning mix English
AMERICLASE 98 S A 97% magnesia, chemically bonded gunning mix
AMERICLASE H A 74% magnesia, dry ramming mix English
AMERICLASE HC English
AMERICLASE HD English
ANKORBOND C® A wet, resin bonded, heat setting high alumina mortar
BASIC 187 DV-88 A 90% magnesia, dry, heat setting vibratable. English
BASIC 187 DV-88D A 90% magnesia, dry, heat setting vibratable English
BASIC 187 GM-60 A 60% magnesia, silicate bonded gunning mix English
BASIC 187 GM-88 An 88% magnesia, silicate bonded gunning mix English
BASIC 187 GM-88 RH An 88% magnesia gunning mix with a dual binder system English
BASIC 187 GM-93 A 93% magnesia, chemically bonded gunning mix English
BAYONET MORTAR A high alumina, carbon containing, heat setting mortar English
BOF 411 A magnesia carbon brick for Basic Oxygen Furnace Linings English
BOF 412 A magnesia carbon brick for Basic Oxygen Furnace Linings English
BOF 711 A magnesia carbon brick for Basic Oxygen Furnace Linings English
BOF 712 A magnesia carbon brick for Basic Oxygen Furnace Linings English
BOF 722 A magnesia carbon brick for Basic Oxygen Furnace Linings English
BOF 732 A magnesia carbon brick for Basic Oxygen Furnace Linings English
BOF 811 A magnesia carbon brick for Basic Oxygen Furnace Linings English
BOF 812 A magnesia carbon brick for Basic Oxygen Furnace Linings English
BOF 821 A magnesia carbon brick for Basic Oxygen Furnace Linings English
BOF 822 A magnesia carbon brick for Basic Oxygen Furnace Linings English
BOF 832 A magnesia carbon brick for Basic Oxygen Furnace Linings English
BOF 911 A magnesia carbon brick for Basic Oxygen Furnace Linings English
CLEANCOAT 6M A magnesia troweling mix English
CLIPPER® DP A super duty fireclay brick
COMANCHE® A carbon bonded, alumina magnesia brick English
COMANCHE® FA A carbon bonded, alumina magnesia brick English
COMANCHE® GOLD A carbon bonded, alumina magnesia brick English
COMANCHE® PLATINUM A carbon bonded, alumina magnesia brick
COMANCHE® SL A carbon bonded, alumina magnesia brick English
CORAL® BP A burned, phosphate bonded 80% alumina brick
D-CAST® 85 GOLD CASTABLE An 85% alumina, low moisture castable English
D-CAST® 85TMCC CASTABLE An ultra-low cement, high alumina castable English
D-CAST® XZR-OR An ultra-low cement, high alumina castable with 26% silicon carbide
DAUBPAX An 86% silica, plastic refractory English
DESCON® S97 ADTECH A vitreous silica-based castable
DOSSOLITE 1400–75 A 78% magnesia, fine grained mix designed for spraying English
DOSSOLITE 1400–83 An 88% magnesia, fine grained mix designed for spraying English
DOSSOLITE 1400-72 A 77% magnesia, fine grained mix designed for spraying English
DOSSOLITE 1400-917 An 80% magnesia, fine grained mix designed for spraying English
DV-38® An 80% alumina, burned, phosphate bonded brick
EAF 231 AS A magnesia-carbon brick for EAF service English
EAF 232 AS A magnesia-carbon brick for EAF service English
EAF 233 AS A magnesia-carbon brick for EAF service English
EAF 621 AS A magnesia-carbon brick for EAF service English
EAF 622 AS A magnesia-carbon brick for EAF service English
EAF 631 AS A magnesia-carbon brick for EAF service English
EAF 632 AS A magnesia-carbon brick for EAF service English
EAF 822 AMS A magnesia-carbon brick for EAF service English
EAF 832 AMS A magnesia-carbon brick for EAF service English
EAF 833 AMS A magnesia-carbon brick for EAF service English
EAF BB1 A magnesia-carbon brick for EAF service English
EMPIRE® C A high duty firebrick English
EMPIRE® S A high duty, dry pressed fireclay brick English
EXPRESS®-27 PLUS A 50% alumina, cement bonded, self flowing castable English
FASKAST® 75 PLUS An ultra-low cement, high alumina castable
FASKAST® 80 An ultra-low cement, high alumina castable
FUSECRETE® C An high alumina course aggregate castable English
FUSIL® CASTABLE 820 I A fused, silica-based castable
GREENAL®-80 An 80% alumina, dry pressed brick
GREENAL®-80 P 80% Alumina, Burned Brick Containing Phosphate English
GREENAL®-85 HP 85% Alumina, Dry Press Brick designed for superior steel ladle performance versus standard 80% alumina brick.
GREENGUN®-70 P PLUS A 70% alumina, phosphate bonded gunning plastic English
GREENGUN®-85 P PLUS An 85% alumina, phosphate bonded gunning plastic English
GREENLITE®-45-L GR ON-LINE® A 2500°F rated lightweight gunning mix
GREENSET®-80 BH An 80% alumina, air setting mortar English
GREENSET®-85 P An 80% alumina, phosphate bonded mortar
GREENTHERM 23 LI A 2300°F rated insulating firebrick
GREENTHERM 26 LI A 2600°F rated insulating firebrick
GREENTHERM 28 LI A 2800°F rated insulating firebrick
GREENTHERM 30 LI A 3000°F rated insulated firebrick
GREFCON® 98 SP A 3300°F, spinel-containing castable English
GREFCON® 98 SPL A 3300°F, spinel-containing castable English
H-W 3-75 A high alumina, burned, phosphate bonded brick English
HARWACO BOND (DRY) A 50% alumina, air setting, dry mortar English
HARWACO BOND (WET) A 50% alumina, air setting, wet mortar English
HOT BANK 53 A dry ramming mix composed of sintered dolomite and magnesia English
HP-CAST ® 94MA-C A high-purity alumina, spinel-containing, ultra-low cement, coarse castable
HP-CAST ® ULTRA A high purity alumina, spinel forming, ultra-low cement castable English
HP-CAST ® ULTRA VC A high-purity alumina, spinel-forming, ultra-low cement castable English
HPV®-ESX CASTABLE A fused silica castable designed for thermal shock resistance
INSBLOK®-19 A 1900 F rated mineral wool block
INSBOARD 2300 LD A 2300°F Low Density Vacuum-Formed Ceramic Fiber Board
INSWOOL® PUMPABLE 2300°F Ceramic Fiber Pumpable Material - formulated for pumping with special equipment.
INSWOOL®-HP BLANKET 8# A 2300°F rated, alumina silica ceramic fiber blanket
INSWOOL®-HTZ BLANKET 8# A 2600°F rated, alumina silica zirconia ceramic fiber blanket
IRONMASTER® An 81% alumina brick with a silicon carbide and carbon addition
ISO-STAR MX2 An AMC material that may be Iso-Pressed for use as ladle well blocks and pocket blocks English
ISO-STAR MX2 An AMC material that may be Iso-Pressed for use as ladle well blocks and pocket blocks English
ISO-STAR® MC An Iso-Pressed magnesia and graphite ladle weel block and pocket block English
ISO-STAR® MX An Iso-Pressed magnesia and graphite ladle weel block and pocket block English
ISOTAP® An Iso-Pressed magneisa and graphite taphole English
KALA® A 50% alumina brick
KALA® SR A 50% alumina brick designed for thermal shock resistance English
KAST-O-LITE® 19 L PLUS A 1900°F rated lightweight castable English
KAST-O-LITE® 20 PLUS A 2000°F rated lightweight castable English
KAST-O-LITE® 23 LI PLUS A 2300°F rated lightweight gunning mix
KAST-O-LITE® 50-25 PLUS A 2500°F low-density insulating castable English
KORUNDAL XD® A 90% alumina, mullite bonded brick with low porosity
KORUNDAL® MORTAR A 90% alumina, heat-setting mortar
KRUZITE®-70 A 70% alumina brick
KS-4V GR PLUS A fireclay based, conventional cement gunning mix
KS-4V PLUS A fireclay based, conventional cement castable
KX-99® A high fired, super duty fireclay brick
KX-99®-BF A high fired, super duty fireclay brick English
LADLE SL TANK A magnesia carbon brick English
LO-ABRADE® GR PLUS A 2600°F dense, abrasion-resistant, gunning castable English
LOTHERM® RK High Strength Insulating Brick - 101 pcf English
MAGNUM XL10F Magnesia-Carbon brick for Steel Ladle service
MEXI-KOMO® A dry, heat-setting, super duty mortar
MIZZOU® CASTABLE PLUS A 3000°F rated high alumina castable
NARCARB® BSC A carbon bonded, alumina-silicon carbide brick
NARCARB® ZP PLASTIC A 65% alumina, slag resistant refractory plastic English
NARCOGUN® 50 BG A 50% alumina gunning mix English
NARCOGUN® 70 BG A 70% alumina gunning mix
NARCOGUN® BSC-DS A trough gunning mix English
NARCON® 65 CASTABLE A 65% alumina, low-cement castable English
NARCON® 70 CASTABLE A 70% alumina, low moisture castable
NARCOTUN® 72 A 72% magnesia, dry, heat setting vibratable English
NARCOTUN® 72XH A 72% magnesia, dry, heat setting vibratable with an extra hard bond English
NARCOTUN® 83 A 86% magnesia, dry, heat setting vibratable English
NARCOTUN® 83XH A 87% magnesia, dry, heat setting vibratable with an extra hard bond English
NARCOTUN® 87 A 87% magnesia, dry, heat setting vibratable English
NARCOTUN® M-97 A 96% magnesia, dry, heat setting vibratable English
NAREZ AM5 A magnesia carbon brick for Basic Oxygen Furnace Linings English
NARMAG® 60 DB A magnesia chrome burned brick English
NARMAG® 95 CASTABLE A 95% magnesia castable English
NARMAG® FG A magnesia chrome burned brick English
NARMAG® HRB A 97% magnesia, burned brick English
NARMAG® L MORTAR A magnesia dipping mortar English
NARMAG® MORTAR HEAT SET A basic mortar English
NARPHOS® 90 MORTAR A 90% alumina, phosphate bonded mortar English
NARPHOS® 90R RAM MIX A high-alumina ramming mix English
NARSPRAY® M-77 A 77% magnesia, ultra-lightweight spray mix English
NARTAR® 7 A magnesia, pitch impregnated burned brick English
NARTAR® TS A magnesia, pitch impregnated burned brick English
NARTAR® XR A magnesia, burned brick English
NISIC 20 A nitride bonded, silicon carbide brick English
NO. 36 REFRACTORY CEMENT A wet, air setting, high alumina mortar
NOZZLE SET 90P English
ON-LINE® 60 A 60% alumina, low-cement castable designed for rapid curing English
PHANTUM® XL147 A magnesia carbon brick for steel ladle applications English
PHANTUM® XL148 SUPER A magnesia carbon brick for steel ladle applications English
PLASTECH® 50P STD A 50% alumina, phosphate bonded refractory plastic
PLASTECH® 70P STD A 70% alumina, phosphate bonded plastic refractory
PLASTECH® 85P STD An 85% alumina, phosphate bonded plastic refractory
PLASTECH® 90P FINE A fine grained, 90% alumina, phosphate bonded refractory plastic English
PLASTECH® 90P STD A 90% alumina, phosphate bonded refractory plastic
PLASTECH® RUBY® An alumina-chromium, phosphate bonded refractory plastic
PNEULITE® SPRAY 22 A 2200°F, insulating shotcrete mix English
PRISM® DC High Alumina (96%), Cast Fired Shapes
RENEGADE® BL8H A magnesia carbon brick for steel ladle applications English
RENEGADE® XL10F A magnesia carbon brick for steel ladle applications English
RUBY® RAMMING MIX A phosphate-bonded, alumina-chromium ram mix English
RUBY®190 KSV MORTAR An alumin-chrome mortar English
S142® A 62% magnesia, 17% chrome burned brick English
S145® A magnesia chrome brick English
SCHIEBERSAND® BO-2 A dry, granular low-carbon material used for well fill for slide gates. English
SENTINEL® RC PLUS A portland cement bonded, high strength, general purpose castable English
SFG® A magnesia-chrome brick English
SFG®-US A magnesia-chrome brick English
SHAC ADTECH® An extra-high-alumina castable English
SHOT-TECH® 45 LI A fireclay based, low-cement shotcrete mix
SHOT-TECH® 60 A 60% alumina, low-cement shotcrete mix
SHOT-TECH® 80 An 80% alumina, low-cement shotcrete
SHOTKAST® 65 A high-alumina shotcast castable English
SHOTKAST® HMC A high-alumina shotcast castable
SHOTKAST® TRW A shotcast trough castable English
SILSET An air-set silica mortar for coke oven brick English
SLID® An 87.5% magnesia, burned brick English
SUPER HYBOND® 60 PLUS A 60% alumina, mullite, air-setting, plastic refractory English
SUPER HYBOND® PLUS A high-strength, air-setting, super-duty, plastic refractory
SUPER NARTAR® R A magnesia carbon brick for Basic Oxygen Furnace Linings English
T-WELL 80 A high alumina, fine graind tamping mix English
TAP-332 AS A magnesia-graphite taphole mix English
TAP-431 AS A magnesia-graphite taphole mix English
TAP-431 AS A magnesia-graphite taphole mix English
TAP-432 AS A magnesia-graphite taphole mix English
UFALA® A 60% alumina brick shape English
UFALA® MCR A 60% Alumina - Andulsite Brick Shape English
UFALA® XCR A 60% Alumina - Andulsite Brick Shape English
ULTRA-EXPRESS® 70 A 70% alumina, free flowing, ultra-low cement castable
ULTRA-GREEN® 57A A 57% alumina, andalusite base, ultra-low cement castable
ULTRA-GREEN® 60 PLUS A 60% alumina, low cement castable English
UNACAST® 1005X An 80% alumina, thermal shock resistant, pre-cast shape English
VARNON® AH Air Ram (53% Alumina) Fireclay Brick English
VERSAFLOW® 45 C PLUS A coarse, fireclay-based, low-cement castable for high-abrasion environments
VERSAFLOW® 45 PLUS A fireclay based, low-cement castable English
VERSAFLOW® 60 PLUS A 60% alumina, low cement castable
VERSAFLOW® 70 PLUS A 70% alumina, low-cement castable
VERSAFLOW® 80 C PLUS An 80% alumina, coarse aggregate, low-cement castable
VIBE-TITE A 70% alumina, dry vibratable English

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