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  • Indefinite Refractory Castables
  • Indefinite Refractory Castables
  • Indefinite Refractory Castables
  • Indefinite Refractory Castables

Indefinite Refractory Castables

Application: For metallurgy, petrifaction, electricity, and building industry: heating furnace, annealing furnace, converter, electric furnace, thermal treatment furnace, garbage incinerator, catalysis furnace, cracking furnace, and cement kiln.


Property: Our company's indefinite refractory castables are manufactured through the mechanism of cohesion, polymerization, flocculation, and ceramic with high-purity and high-quality refractory materials, It has convenient construction, great integrity, resistance, wear resistance, ling service life, and other features.
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Typical Chemical and Physical Index:

Alumina Hollow Ball Castables

HG-165

Alumina Hollow Ball Castables

HG-160

High Strength Mullite

Lightweight Castables

HG-145

High Strength Mullite

Lightweight Castables

HG-140

Lightweight Mullite

Castables

HG-135

Lightweight Mullite

Castables

HG-130

Operating Temperature ℃

1650

1600

1450

1400

1350

1300

Bulk Density(g/cm³)

1.5

1.5

1.7

1.7

1.4

1.4

Compression Strength (Mpa)

110℃×24h

7.5

17

25

25

6

5.5

1300℃×3h

20

22

20

20

5

5

Changes After Wire Burning %  ℃×3h

0.4(1600)

0.5(1500)

0.6(1450)

0.8(1400)

0.7(1350)

0.7(1300)

Thermal Conductivity (w/m.k)

400℃

0.42

0.42

0.58

0.58

0.40

0.38

800℃

0.48

0.48

0.64

0.64

0.45

0.43

Chemical Components  %

Al2O3 ≥

98

94

70

68

65

65

Fe2O3 ≤

0.3

0.3

0.8

0.9

0.9

1.0

  

Lightweight Heat-Insulating And Thermal-Insulating Castables

HG-130

HG-125

HG-120

HG-110

HG-100

HG-90

HG-80

Operating Temperature ℃

1300

1250

1200

1100

1000

900

800

Bulk Density (g/cm³)

1.4

1.3

1.2

1.1

1.0

0.8

0.6

Compressive Strength 1000℃×3h Mpa

5

6

4

4

4

1.7

(900℃×3h)

0.6

(800℃×3h)

Changes After Wire Burning %  ℃×3h

0.6

(1300)

0.7

(1250)

0.6

(1200)

0.6

(1100)

0.5

(1000)

0.7

(900)

0.5

(800)

Thermal Conductivity 600℃ w/m.k

0.36

0.33

0.32

0.30

0.28

0.25

0.17

Chemical Components %

AL2O3 ≥

43

42

38

32

30

28

28

 

 

Clay Bonding

Plasticity

High-Temperature Refractory

Plasticity

Mullite

Fire Plasticity

Corundum Refractory

Plasticity

Silicon Carbide

Fire Plasticity

Bulk Density (g/cm³)

2.35

2.60

2.60

3.00

2.60

Fire Resistance ℃ ＞

1700

1720

1750

1790

1790

Compression Strength (Mpa)

110℃×24h

15

40

42

45

45

600℃×3h

20

60

65

65

68

1300℃×3h

35

70

75

80

80

Reheat Linear Change %  ℃×3h

±0.2

(1400)

±0.3

(1400)

±0.3

(1450)

±0.3

(1500)

±0.3

(1400)

Thermal Shock Stability /Times
1100℃ Water-Cooled ＞

30

30

30

30

30

Chemical Components %

Al2O3 ≥

55

72

73

92

-

Fe2O3 ％ ≤

1.2

1.1

0.8

0.3

-

SiO2  ≥

-

-

-

-

71


Related Products

Company
Dongtai Hongda Heat Resistant Material Co., Ltd.
Dongtai Hongda Heat Resistant Material Co., Ltd. is China Unshaped Refractory Materials Manufacturers and Wholesale Unshaped Castable Suppliers dedicated to the research and development of high-grade insulating refractory products, specializing in the petrochemical, metallurgy, ceramics, new energy, electronics, mechanical heat treatment and other industries. It provides high-quality HJM series of insulating refractory products and amorphous castables.
Founded in 2008 with a registered capital of 20 million yuan, the company is located in Dongtai, Jiangsu Province, the home of China's refractory materials, with a beautiful environment and convenient transportation.
With a complete quality control and assurance system and in strict accordance with the American ASTM standard organization of production, the company has passed the ISO 9001:2015 quality certification in 2010, the ISO 14001:2015 environmental certification in 2019, the ISO 45001:2018 occupational health certification in 2022, achieving total quality management of the production process. We have a variety of domestic advanced manufacturing equipment, including automatic batching and molding lines, 1500 high-temperature tunnel kilns, 1700 shuttle kilns, machining equipment, product firing temperature range from 1200℃ to 1800℃, the current production capacity of 20,000 tons of insulation materials.
The company has the right to import and export agents around the world. Our products not only enjoy a high reputation in the country, but are also exported to Italy, Britain, Spain, South Korea, Japan, India, and other countries and regions by both domestic and foreign customers.
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Composition of Indefinite Refractory Castables

Indefinite Refractory Castables are an advanced refractory material whose excellent performance and wide range of applications make it an important part of the high-temperature industry.
Powdered base material
The basic materials of Indefinite Refractory Castables are usually powdered refractory materials, including alumina, aluminum silicate, etc. These powder materials have a high degree of high temperature resistance and chemical stability and are the cornerstone of refractory materials. Aluminum oxide plays a key role in this combination to improve the material's refractoriness and corrosion resistance, while aluminum silicate increases the material's thermal shock resistance and mechanical strength.
adhesive
In order to form a solid overall structure from the powdered base material, binders are often added to Indefinite Refractory Castables. These binders can bond and solidify under high temperature conditions to ensure that the refractory materials will not disintegrate or crack during use. Common binders include water glass, high alumina cement, etc., which provide the material with a high-temperature-resistant structure through the reaction and curing process.
additive
In order to improve the performance of Indefinite Refractory Castables, it is usually necessary to add some auxiliaries. These additives can be oxides, fibers or other special chemical components. For example, adding fine aluminum oxide powder can improve the material's density and corrosion resistance. In addition, fibrous additives, such as ceramic fibers, can improve the toughness and thermal shock resistance of refractory materials.
D
When preparing Indefinite Refractory Castables, the use of wetting agents is critical to the mixing and casting process. Wetting agents help disperse powdered materials evenly, improve the plasticity of the slurry, and make the material easier to construct. Common wetting agents include organic acids and surfactants, which can reduce the surface tension of the liquid phase and promote the slurry to better wet the solid particles.
Mixing process
The preparation of Indefinite Refractory Castables typically involves a rigorous mixing process. Powdered base materials, binders, additives and wetting agents need to be precisely proportioned and mixed to ensure uniformity and consistency. The mixed slurry will have a certain degree of plasticity so that it can be formed into the desired shape during construction.

Unique performance and advantages of Indefinite Refractory Castables

As an advanced refractory material, Indefinite Refractory Castables have attracted much attention in the high-temperature industrial field for its unique properties and significant advantages.
Good high temperature resistance
One of the main advantages of Indefinite Refractory Castables is their excellent high temperature resistance. Because its basic materials contain high-quality refractory materials, such as alumina, aluminum silicate, etc., the material can still maintain structural stability in extreme high-temperature environments. This characteristic makes Indefinite Refractory Castables widely used in industrial equipment that need to withstand high temperature conditions, such as steel-making furnaces, glass kilns, etc.
Good thermal shock resistance
Thermal shock resistance is a key indicator of whether refractory materials can maintain structural stability under rapid temperature changes. Indefinite Refractory Castables, with their unique formulation, exhibit excellent thermal shock resistance and are able to maintain their integrity under conditions of drastic temperature fluctuations. This not only extends the service life of the refractory materials, but also reduces equipment maintenance costs.
Easy to construct and form
Indefinite Refractory Castables are named for their amorphous nature, which makes them more flexible and convenient during construction. The material can be applied to surfaces of various shapes and structures through pouring or spraying to adapt to the needs of different equipment. This plasticity gives Indefinite Refractory Castables a unique advantage in complex-shaped equipment, improving construction efficiency.
Anti-erosion properties
In some industrial production processes, equipment surfaces are susceptible to corrosion, and the special formula of Indefinite Refractory Castables gives it excellent corrosion resistance. This makes it resistant to acid and alkali corrosion in metal smelting, chemical and other industries, ensuring long-term stable operation of equipment.
Stable chemical properties
The composition of Indefinite Refractory Castables has been rigorously engineered to perform well in complex chemical environments. Not only can it withstand chemical reactions in high-temperature atmospheres, but it can also maintain the stability of the material itself and avoid affecting equipment performance due to chemical corrosion.
Environmental protection and sustainability
Compared with traditional refractory materials, Indefinite Refractory Castables usually use water as a wetting agent during the preparation process, which is relatively environmentally friendly. In addition, its stability and anti-aging performance during its service life reduce the frequency of replacement of refractory materials, thereby reducing resource consumption and in line with the concept of sustainable development.