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Insulating Castable

Lightweight castable: lightweight, energy efficient, easy to install, with high fluidity. Boosts equipment airtightness and corrosion resistance. For industrial kilns, thermal equipment, chimneys and flues.

Bulk Density:0.8-1.3g/cm³
Operating Temp:1200-1300℃
Cold Crushing Strength:2.0-20MPa
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Insulating Castable
Description
Technical Data
Application
Case
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Description of Insulating Castable

Lightweight insulating castable is a castable refractory material made from lightweight aggregates (such as perlite, vermiculite), high - temperature - stable materials, binders, and additives. It combines lightweight, high - strength, and insulation properties and is suitable for the lining of industrial high - temperature equipment.

Features and Properties

  1. Mechanical Properties: It has a balanced flexural strength and compressive strength and good thermal shock resistance.
  2. Chemical Stability: Some models are resistant to acid and alkali corrosion, suitable for corrosive environments.
  3. Construction Convenience: It can be cast on - site or pre - formed, shortening the construction period.

Technical Data of Insulating Castable

Index Items ZKQJ - 0.8 ZKQJ - 1.0 ZKQJ - 1.5
Bulk Density /g/cm³ 0.8 1.0 1.3
Maximum Service Temperature /°C 1200 1250 1300
Thermal Conductivity /W/m·K 350°C 0.25 0.3 0.6
700°C 0.30 0.4 0.7
Compressive Strength at Normal Temperature /MPa ≥ 110°C×24h 2.0 4.0 15
1000°C×3h 2.0 5.5 20
Linear Change Rate /% 1000°C×3h -1.0 -1.0 -0.5

Applications of Insulating Castable

  1.  Industrial Kilns: Used as the insulation layer for furnace roofs, furnace doors, etc.
  2. Thermal Equipment: Applied to the working lining of heat - treatment furnaces and resistance furnaces.
  3. Flue Duct System: Used for the lining of high - temperature chimneys and air ducts.
  4. Other Fields: Applied to CFB boilers, petrochemical acid - resistant tanks, and metallurgical equipment.

Case of Insulating Castable

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ABOUT XZK GROUP
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Product Range:
High/mid-grade sintered zirconia, corundum, AZS bricks,lightweight insulation bricks, and unshaped refractories with annual output value exceeding 500 million RMB.
Production Capacity:
4 automated batching systems
4 high/ultra-high temperature tunnel kilns + 5 shuttle kilns
30 CNC presses (400-1500T capacity)
Digitalized workshops producing 150,000 tons/year
93 patents, including the industry-first Triple-ResistantBrick (Patent ZL201310431067.6) for glass furnaces,excelling in erosion/thermal shock resistance.
Co-drafted industry standards forandalustie/chrome-corundum/zircon bricks withChina Building Materials Academy.
Strategic partners: Baowu Group, CNBM, CSG Holding. Xinyi Glass, Kibing Group.
Led by Prof Shi Gan (renowned refractory expert), our 40+ R&D professionals drive innovation in green material technology
Prof. Shi Gan
Chief Scientist & R&D Director, XZK Group
China's highest technical for industrial R&D leadership.
Key participant in drafting 5+ national industry standards.
Principal inventor of the Triple-Resistant Brick, resolving critical glass furnace longevity challenges.
Zhengzhou Zhongke Refractories Co.
Lightweight insulation materials (alumina bubble bricks, mullite bricks)
Zhengzhou Zhongke New Materials Co.
High-temperature specialties (chrome-zirconia corundum bricks, triple-resistant bricks)
Zhengzhou Hengruida Materials Co.
Premium zirconia-series refractories
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Add: Micun Industrial Area, Xinmi City, Henan Province, China
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