Refractory Brick for High Temperature Insulation and Glass Contact

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Refractory Brick for Insulation and Glass Contact

$Zircoa Tongue and Groove Refractory Brick$ Zirconium Oxide Compositions Engineered for Mortar-free and Self-supporting Structures in High Temperature Cycling Environments

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

For more detailed information on the unique properties of Zirconium Oxide (A Grain Zirconia, ZrO₂) please visit our Solutions page: www.zircoa.com/solutions, or contact a product specialist to discuss your specific needs.

$Zircoa Standard Refractory Brick$ Bricks

Standard zirconia 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. Standard brick sizes are listed below.

Tongue and Groove Bricks

Zircoa’s tongue and groove bricks (shown at top) 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.

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

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.

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)

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Standard Brick Sizes
(Composition 1651, 1968, 2290, 3002 & 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	872	871	890	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+14 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.

NOTICE: Recommendations, property values, and application information we publish are based on various sources including measurements by us and others, and estimates of experience. We intend this to be a reliable guide, but we do not guarantee the applicability, completeness, or accuracy of the information. Users should make their own tests to determine the suitability of any product for their application.