Calcium Silicate Insulation Board

The calcium silicate insulation board is a new type of white, hard insulation material. Calcium silicate fire board is made of xonotlite hydrate and reinforced fiber through a filter press. Moreover, its maximum heat resistance temperature reaches 1000℃(1832℉), which is a high-efficiency and energy-saving product.

  • SiO2(≥): 46% – 68%
  • CaO(≥): 39% – 41%
  • Bulk Density: 230g/cm³ – 270g/cm³±10%
  • Permanent Liner Change(≤): 2.0%
Calcium Silicate Board for Sale

Technical Specifications of Calcium Silicate Insulation Board

ItemCalcium Silicate Insulation Board
Maximum Use Temperature/℃1000
Chemical Compositionω (SiO2)/%46-48
ω (CaO)/%39-41
ω (Al2O3)/%0.39-0.42
ω (MgO)/%0.5-0.7
Bulk Density (kg/m³)230±10%250±10%270±10%
Modules of Rupture ≥/MPa0.450.50 0.55
Compressive Strength ≥/MPa0.750.850.95
Permanent Linear Change/%1000℃*16h ≤ 2.0
Thermal Conductivity Coefficient ≤/[W/(m·K)]100℃0.0650.0670.072

Features of Calcium Silicate Insulation Board

Kerui calcium silicate fire resistant board has the following outstanding features. In addition, our Facebook homepage has more information about the applications and advantages of other ceramic fiber products.

  • Low thermal conductivity: excellent insulation performance.
  • Good thermal stability: small expansion and contraction values ​​when the temperature changes;
  • Low volume density: small bulk density, less heat storage;
  • High strength: fire rated calcium silicate board specific strength is the highest among hard insulation materials;
  • Good durability: no powdering phenomenon after long-term use. Its strength and thermal insulation performance remain unchanged after soaking in water and drying;
  • Harmless to the human body: does not contain toxic substances such as asbestos, sulfur, chlorine and other low-melting-point organic binders.

Ceramic fiber board properties
Ceramic fiber board properties

Production Workshop for Calcium Silicate Insulation Board
Kerui Excellent Calcium Silicate Board for Sale
Advantages of Calcium Silicate Insulation Board

Applications of Kerui Calcium Silicate Insulation Board

The application scenarios of fireproof calcium silicate board and high density ceramic fiber board are as follows:

  • Cement industry: decomposition furnace, preheater, air duct, kiln head hood, smoke chamber and grate cooler;
  • Nonferrous metal industry: electrolytic cell;
  • Steel and metallurgical industry: heating furnace, soaking furnace, annealing furnace, bell furnace, high-temperature flue, hot air duct;
  • Petrochemical industry: heating furnace, hydrogenation furnace, hydrogen production furnace, ethylene cracking furnace, catalytic cracking furnace, aromatics furnace, chimney and high-temperature pipeline;
  • Power industry: boiler body and preheating furnace pipeline, chimney and heating pipeline;
  • Glass industry: melting furnace pool bottom, pool wall, heat storage chamber breast wall, tin trough, annealing furnace and chimney;
  • Ceramic industry: shuttle kiln, tunnel kiln car core and car plate.

Applications of ceramic fiber products

Production Process of Kerui Calcium Silicate Insulation Board

The production process of calcium silicate board waterproof is a key manufacturing process. This directly affects the quality and performance of ceramic fiber material. The following are the advanced production process steps of Kerui calcium silicate insulation board:

  • Raw material screening: Kerui strictly selects high-quality raw materials. Therefore, we ensure that these raw materials meet relevant standards and ensure the stable quality of the products.
    Ingredient mixing: the screened raw materials are mixed evenly according to a certain ratio. So, this step ensures the consistency of each calcium silicate insulation density.
  • Pulping: mix the mixed raw materials with water to form a uniform slurry. In this process, Kerui also adds some special additives to adjust the fluidity and molding properties of the slurry.
  • Molding: pour the pulped slurry into the molding mold, vibrate and compact it. This step also makes it reach a certain density and shape. Then, the molded board becomes the preliminary form of calcium silicate insulation board.
  • Drying: the molded moisture resistant calcium silicate board is placed in a drying room. Then, we gradually remove the moisture in the board through heating and ventilation to ensure the dryness and stability of the product.
  • Cutting: in this step, we will cut the dried calcium silicate insulation board into the size that meets the customer’s requirements. Moreover, Keri uses automated equipment for cutting. So we can ensure the dimensional accuracy of the product.
  • Quality inspection and packaging: we will also conduct quality inspection on the cut and trimmed calcium silicate insulation board. We will package qualified high performance refractories to prevent damage during transportation and use.

Package of Kerui Calcium Silicate Insulation Board

Why Choose Kerui Calcium Silicate Heat Resistant Boards?

Complete Range of Specifications
  • Diverse selection: Kerui calcium silicate board is available in a variety of thicknesses, densities and sizes. So, it is suitable for construction and industrial equipment.
  • Customized service: we also provide customized calcium silicate board to ensure a perfect fit for your project requirements.
Reasonable Price
  • Fair pricing: Kerui provides customers with the most competitive prices while ensuring the quality of ceramic blanket insulation and boards. We help customers effectively control project costs.
  • Transparent quotation: we also provide transparent quotation services without hidden fees. So, customers can see the cost at a glance.
Leading Technology
  • Innovative R&D: Kerui also continues to invest in R&D to improve production processes and product formulas. We have been improving the performance and wide application of calcium silicate board.
  • Quality assurance: through a strict quality control system, we ensure that every board meets the highest quality standards.
Fast Delivery
  • Efficient logistics: Kerui has a complete logistics system. Therefore, our products can be delivered to customers in the shortest time.
  • Flexible delivery arrangements: according to the customer’s project schedule and needs, we can flexibly arrange production and delivery to ensure the smooth progress of the project.

Kerui CE Certificate
CE Certificate
Kerui EMS Certificate
EMS Certificate
Kerui OHSM Certificate
OHSM Certificate
Kerui QMS Certificate
QMS Certificate

Aerial View of Kerui Factory


If you are interested in the Kerui calcium silicate insulation board, or need to know more product information and solutions, please feel free to contact us. Moreover, our professional team will serve you wholeheartedly and provide the most suitable insulation solution for you.

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