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Refractory Brick Engineered for Mortar-free and Self-supporting Structures in High Temperature Cycling Environments

Refractory Brick are engineered to satisfy your specific insulating or melting requirements and deliver long-term service. Calcia or Yttria stabilized Zirconium Oxide pressed or tongue and groove bricks stand-up to temperatures of 2000°C and beyond. Compositions Markets served include: quartz and laser crystal growth, glass, refractory metals, carbon black and high temperature furnaces.

Refractory Brick - Tongue and Groove

Zircoa’s tongue and groove bricks are designed for the building of self-supporting structures. Their design and calcia or yttria stabilized zirconia composition makes them ideal for high temperature cycling* environments.

Using Zircoa’s tongue and groove brick eliminates line of sight radiation, and adds physical stability to the structure. Rings and circles, with an ID as small as 6" can be achieved. Applications include heat shields, furnace roofs and linings.

Ring Calculator - Our online calculator (www.zircoa.com/t&g.ring)can help you determine the quantity of Zircoa 2" high arch and straight tongue and groove bricks required to construct 6" to 72" diameter rings.

* Controlled heat-up and cool-down are important for long life.

Refractory Brick - Standard

Standard refractory bricks (left) are used primarily for custom high-temperature furnace linings, supports and heat shields. Zircoa’s standard bricks withstand operating temperatures greater than 2000°C (3630°F) with capacity to spare. Quartz melting and synthetic crystal growing are typical applications.

 

Specifications

MSDS for Refractory Brick

Follow the composition number links for the corresponding MSDS.Visit our Website (www.zircoa.com/msds) to download the MSDS for this product's compositions.

Heat Transfer of Pressed Brick (Composition 1651)

Dense Brick — 4.45 g/cm3 (278 lbs./ft.3) Hot Face — 5 hours exposure at 1980°C (3600°F)
51 mm (2")  Thick Brick	Hot Face	Cold Face	Cold Face Grog
No grog backup	1980°C (3600°F)	704°C (1300°F)	— —
26mm (1") grog backup	1980°C (3600°F)	1149°C (2100°F)	538°C (1000°F)
51mm (2") grog backup	1980°C (3600°F)	1371°C (2500°F)	427°C (800°F)

Standard Zircoa Brick Sizes (Composition 1651, 1968, 2290 & 3004

Brick	Dimensions (approximate)
25mm (12") straight	305 x 153 x 25mm (12" x 6" x 1")
19mm (3/4") split	305 x 153 x 19mm (12" x 6" x 3/4")
64mm (9") straight	230 x 114 x 64mm (9" x 4-1/2" x 2-1/2")
51mm (2") split	230 x 114 x 51mm (9" x 4-1/2" x 2")
32mm (1-1/4") split	230 x 114 x 32mm (9" x 4-1/2" x 1-1/4")
19mm (3/4") split	230 x 114 x 19mm (9" x 4-1/2" x 3/4")
13mm (1/2") split	230 x 114 x 13mm (9" x 4-1/2" x 1/2")

 

Physical Properties of Various Zirconia Compositions

Composition	1968	1651	0872	0871	0890	2290	3004
Stabilizer	CaO (a)	CaO (a)	CaO (a)	CaO (a)	Y2O3 (b)	Y2O3 (b)	MgO (c)
Bulk Density (g/cm3)	3.3	4.2	4.1	3	4	4.5	4.6
Porosity (%)	35	25	30	40	29	23	16
Modulus of Rupture (psi)	450	2,400	1,100	800	1300	2400	3500
Coefficient of Thermal Expansion RT-1300°C (in/in/°C)	8.2	7.3	8	7.9	9.4	5.9	2.3
Thermal Conductivity (W/m-°K) 800°C	0.68	1.2	1.2	0.52	1	1.2	1.4

a. calcia    b. yttria    c. magnesia

Refractory Backup (Thermal Insulation)

Extend the life of your furnace, and maintain tighter control over your furnace temperatures with Zircoa’s pre-sintered grog refractory backup (www.zircoa.com/grog).

• Zircoa Backup 1859 — Partially stabilized with magnesia and calcia. Available in -8+100, -8+14, -14+28, -28+48 and -48+100 Tyler mesh sizes.
• Zircoa Backup 3001 — Partially stabilized with magnesia. Available in -8+28 Tyler mesh size.
• Zircoa Backup 0125 — Monoclinic zirconia, not stabilized. Available in -8+14 Tyler mesh size.
• Zircoa Backup 10B – Calcia stabilized bubble zirconia. Available in -10+30 Tyler mesh size.
• Zircoa Grog 1593 — Magnesia stabilized. Available in -14+28, -28+48, -48+100, -100+325 and -325 Tyler mesh sizes.