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Light mullite insulating brick takes mullite as its main phase with Al₂O₃ of 50%–85%, featuring low thermal conductivity, low bulk density and good high-temperature structural strength for insulating and composite linings of ceramic kilns, glass furnaces and reheating furnaces.
Cordierite-mullite kiln furniture (saggers, shelves, posts and beams) combines low thermal expansion with high refractoriness under load, offering excellent thermal shock resistance and long service life for ceramic, electronic ceramic and magnetic material kilns.
Alumina bubble brick is made from fused alumina bubbles with high-purity alumina matrix, serving at 1600-1800°C with low thermal conductivity, good strength and direct flame contact for high-temperature kiln insulating and working layers.
Slide gate plate is the core functional refractory of ladle and tundish slide gate systems, offering high strength, high density, excellent erosion and thermal shock resistance for precise molten steel flow control.
Ladle purge plug (corundum-spinel type) blowing argon at ladle bottom features high and stable permeability, high strength, excellent erosion and thermal shock resistance, homogenizing steel composition and removing inclusions in ladle refining.
Ladle shrouds and submerged entry nozzles are key functional refractories in continuous casting. They protect the steel stream against reoxidation and control mould flow. Alumina-carbon body with ZrO2 slag line resists slag, prevents clogging and sustains multi-heat sequences.
Integral stopper rod is the core flow-control refractory in the continuous casting tundish. Alumina-carbon or magnesia-carbon grades resist thermal shock and erosion with a durable slag line. Argon-blowing structures and rod-head shapes are customized for stable multi-heat flow control.
Si3N4 bonded SiC brick is made of high-purity silicon carbide with in-situ formed silicon nitride bond, featuring excellent thermal shock resistance, high strength, high thermal conductivity and oxidation resistance for blast furnace tuyeres, aluminum cell sidewalls and kiln furniture.
BF hearth carbon blocks including micropore and semi-graphite grades offer high thermal conductivity and strong resistance to molten iron penetration, key to long-lasting blast furnace bottoms and hearths.
High-alumina brick LZ-55 (Al₂O₃≥55%) with refractoriness ≥1770℃ offers dense structure, wear resistance against gas scouring and combined cold/hot strength—one of the most widely used shaped refractories.
High-alumina brick LZ-65 (Al₂O₃≥65%, refractoriness ≥1790℃) has a higher corundum/mullite phase ratio for stronger slag resistance, higher temperature rating and better hot load-bearing capacity.
Low-creep high-alumina brick with Al₂O₃≥75% and creep rate ≤0.8% (1550℃×50h), RUL ≥1550℃. Minimal deformation under long-term hot load, engineered for load-bearing hot stove domes and walls.
Phosphate-bonded high-alumina brick (Al₂O₃≥75%, refractoriness ≥1770℃) avoids high-temperature firing for energy saving, hardening further in service as temperature rises. Cost-effective with good thermal-shock resistance.
Spalling-resistant high-alumina brick introduces ZrO₂ (3-6%) for transformation and microcrack toughening. Al₂O₃≥70%, thermal-shock stability ≥15 cycles, greatly improved resistance to structural spalling under frequent temperature cycling.
Micro-expansion high-alumina brick (Al₂O₃≥75%, PLC 0.2-0.6% at 1500℃) expands slightly at temperature to compensate joint shrinkage, improving lining integrity and preventing gas/slag leakage.
Fireclay brick (Al₂O₃≥40%, refractoriness ≥1710℃) offers good thermal-shock resistance, economy and easy installation—the classic general-purpose refractory brick.
Low-porosity fireclay brick with Al₂O₃≥45%, apparent porosity ≤15% and RUL ≥1400℃. High density resists penetration by glass melt and furnace gases.
Silica brick with SiO₂≥94%, refractoriness ≥1690℃ and RUL ≥1620℃ shows no high-temperature shrinkage, stable under long-term load and resistant to acid slag and atmospheres—the recommended choice for coke ovens.
Magnesia brick with periclase as the main phase (MgO≥95%, refractoriness ≥2000℃) offers outstanding resistance to basic slags and iron-oxide slag plus excellent high-temperature performance.
Magnesia-carbon brick bonds magnesia with graphite (MgO≥76%, C 14-18%, 1750℃ max). Carbon does not wet slag, giving exceptional slag-line erosion resistance and thermal-shock stability far better than burned magnesia brick.
Magnesia-alumina spinel brick (MgO≥88%, Al₂O₃ 6-10%) is a chrome-free, environmentally friendly alternative to magnesia-chrome. Thermal-shock stability ≥8 cycles, resistant to cement clinker and alkali condensation.
Magnesia-chrome brick (MgO≥60%, Cr₂O₃≥12%, refractoriness ≥1900℃) with magnesia-chromite spinel structure resists attack by high-temperature slags and melts with high hot strength and washout resistance.
Magnesia-calcium brick (MgO≥70%, CaO≥20%, refractoriness ≥1900℃) uses free CaO to absorb inclusions during refining, cleaning steel and improving cleanliness—the dedicated brick for refining ladles. For LF, VD and VOD ladle working linings and slag lines, and secondary refining ladle walls.
Corundum brick with Al₂O₃≥99% and refractoriness ≥2000℃ is chemically pure, resisting high temperature and gas/dust scouring—the premium refractory for critical hot zones.
Chrome-corundum brick (Al₂O₃≥90%, Cr₂O₃ 3-8%, refractoriness ≥1950℃) adds chromia to a corundum base for strong resistance to glass melt attack, slag and washout.
Mullite brick with mullite as the main phase (Al₂O₃≥75%, refractoriness ≥1850℃, RUL ≥1650℃) offers high-temperature volume stability with excellent thermal-shock and creep resistance.
Silicon-mullite brick (Al₂O₃≥55%, SiC≥20%) combines mullite thermal-shock resistance with SiC high thermal conductivity and wear resistance, with low conductivity for energy saving.
Andalusite brick (Al₂O₃≥70%, RUL ≥1600℃, thermal-shock stability ≥10 cycles) exploits mullitization micro-expansion for high-temperature volume stability and outstanding creep resistance.
Silicon carbide brick (SiC≥85%, refractoriness ≥1900℃, CCS≥120MPa) offers high thermal conductivity, extreme wear resistance, thermal-shock resistance and molten-salt resistance—preferred for waste incineration and hot abrasion duties.
Lightweight high-alumina insulating brick (Al₂O₃≥48%, 1500℃ max, bulk density 0.8-1.2 g/cm³, conductivity ≤0.5 W/(m·K)) saves energy with light weight and low thermal conductivity.
Lightweight fireclay insulating brick (Al₂O₃≥35%, 1250℃ max, bulk density 0.6-1.0 g/cm³, conductivity ≤0.35 W/(m·K)) is an economical, stable insulator.
Lightweight silica brick (SiO₂≥92%, 1550℃ max, bulk density 1.2-1.5 g/cm³, RUL ≥1550℃) combines silica refractoriness with lightweight insulation and matches silica brick thermal expansion.
Fused-cast AZS block (Al₂O₃≥48%, ZrO₂≥32%, bulk density ≥3.60 g/cm³, porosity ≤2%) is cast from the melt to near-zero porosity, giving outstanding resistance to glass-melt erosion and scouring.
Zirconia brick (ZrO₂≥95%, 2300℃ max, bulk density ≥5.20 g/cm³) with stabilized high-purity zirconia resists ultra-high-temperature melts and atmospheres—among the highest-temperature oxide refractories.
Checker brick with porous/honeycomb custom holes (Al₂O₃ 45-75%, RUL ≥1500℃) maximizes specific surface area for efficient regenerative heat exchange—the core element of hot stove checkers.
Refractory balls (Al₂O₃ 55-99%, Φ25/40/50/60/75mm, crush load ≥40kN/ball, refractoriness ≥1790℃) maximize specific surface for efficient regenerative exchange. For regenerators of pebble-type hot blast stoves and regenerative reheating furnaces, and petrochemical regenerative air preheaters.
Custom special-shaped bricks cover fireclay, high-alumina, mullite, corundum, silica and magnesia grades with ±1mm tolerance and up to 80kg per piece, produced from drawings by die pressing or casting.
Refractory precast blocks are factory-cast, cured and fired to drawings in castable, corundum and other grades with ±2mm accuracy. Crane-installed for short outage and consistent quality—key to fast maintenance.
Al₂O₃-SiC-C composite brick for hot metal ladle, torpedo ladle and iron ladle working lining; excellent slag erosion resistance, thermal shock resistance and scouring resistance – recommended choice for slag line
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