Sintered Zirconia-mullite Brick
zirconia-mullite-brick2

Sintered Zirconia-mullite Brick

Sintered Zirconia-mullite Brick is a kind of refractory brick that is widely used in high-temperature furnaces. It is made of high-quality zirconia and mullite powders by a sintering process at high temperatures. The product has excellent thermal insulation and mechanical properties, making it suitable for use in various high-temperature industrial furnaces, such as metallurgical furnaces, ceramic kilns, and glass furnaces.

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Product Introduction

Description

Sintered zirconia-mullite brick is a general sintered AZS product containing zircon. The firing temperature determines that the zircon particles are completely decomposed, the surface is slightly decomposed or not decomposed at all. Sintered zirconium mullite refractory has good high temperature resistance and corrosion resistance. But in the temperature range of ZrO2 phase transition, it is sensitive to thermal shock. Sintered zirconium mullite bricks use industrial alumina and zircon as raw materials, and sintered zirconium mullite bricks are made by reaction sintering. Because the reaction and sintering are carried out at the same time, it is difficult to control the process. Usually, It is kept at 1450°C for densification during firing, and then heated to 1600°C for reaction.

Sintered zirconia-mullite brick parameters:

- Al2O3: 30-45%
- ZrO2: 45-70%
- SiO2: 15-30%
- Bulk Density: 3.0-3.4 g/cm3
- Refractoriness: 1750-1850℃
- Thermal Conductivity: 1.0-1.8 W/m*K

Features

Sintered zirconia-mullite brick has low thermal conductivity; low heat capacity; high purity; low impurity content; high temperature resistance; direct contact with flame; high strength; excellent thermal shock resistance; It has the advantages of compact structure, low porosity and high softening degree under load.

1. High melting point: The high melting point makes the product suitable for use in high-temperature furnaces.

2. Low thermal conductivity: The low thermal conductivity ensures that the furnace maintains a stable temperature.

3. Excellent thermal insulation properties: The product's excellent thermal insulation properties reduce heat loss and energy consumption.

4. High compressive strength: The high compressive strength ensures that the product can withstand high-pressure environments.

5. Resistant to corrosion and abrasion: The product's resistance to corrosion and abrasion makes it suitable for use in harsh environments.

6. High-quality raw materials: The use of high-quality zirconia and mullite powders ensures the product's durability and stability.

sintered mullite bricks

Application

The sintered zirconia-mullite brick is suitable to construction superstructures of various glass furnaces, such as the breastwall, perforated checker, crowns bricks, inspection hole bricks etc. In the real hearth, tapping groove and other parts of the steel rolling heating furnace, instead of the current use of refractory bricks and water-cooled cast iron, the use effect is better, and significant economic benefits have been achieved.

application

Physical And Chemical Indicators

Sintered Zirconia-Mullite Brick		AZSS-30		AZSS-20		AZSS-6
Sintered Zirconia-Mullite Brick		Pressing	Slip casting	Pressing	Slip casting	Pressing	Slip casting
Chemical Analysis(%)	ZrO2	30	30	20	20	6	6
	Al2O3	50	50	60	60	70	70
	Fe2O3	0.3	0.3	0.3	0.3	0.3	0.3
Physical Propeerties	Apparent Porosity (%)	16	22	16	22	14	18
	Bulk Density (g/cm3)	3.05	2.85	3.00	2.80	2.75	2.55
	Cold Crushing Strength (MPa)	100	80	100	80	80	70
	Refractoriness Under Load(℃)	1650	1630	1680	1650	1700	1700

Productive Process

1.Raw material quality control including physical and chemical testing.
2.Crushing and grinding of bulk raw materials.
3. According to customer data sheet required to mixing Raw Material.
Pressing or shaping the green brick depend on different raw material and brick shape.
4.Dry the bricks at dryer kiln.
5.Put the bricks into the tunnel kiln to burning by higher temp from 1300-1800 deg.
6.The quality control department will inspect the finished refractory bricks random.

Sintered Zirconia-mullite Brick production process

Packing And Shipping

Packaging  according to safety sea-exporting packing Standard
Dispatch : loading the finished packing material at factory by container Door to Door
By sea fumigated wooden pallet + plastic belt  + plastic film wrap.

Sintered Zirconia-mullite Brick packing

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