Refractory Calcium Silicate Board Manufacturers

Refractory Calcium Silicate Board

Laurel Refractory Calcium Silicate Board is a rigid, non-asbestos thermal insulation material developed for high-temperature industrial equipment. Manufactured from siliceous and calcareous raw materials and reinforced with fibers, the board combines low thermal conductivity with mechanical strength and dimensional stability.

With a maximum service temperature of up to 1100°C for the listed grades, this calcium silicate board is suitable for furnaces, kilns, boilers, ducts, tanks, thermal chambers, and other industrial equipment where rigid insulation is required.

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Product Details
Table Parameters
Features
Applications
Related Products
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Product Details

As a calcium silicate board factory in China, Laurel supplies boards in different density and strength grades for industrial B2B applications. Product specifications can be selected according to operating temperature, mechanical loading, installation position, thickness, dimensions, and order quantity.

What Is Calcium Silicate Board?

Calcium silicate board is a rigid thermal insulation material primarily composed of calcium silicate compounds and reinforced with suitable fibers. Unlike flexible fiber insulation, it maintains a fixed board shape and provides mechanical support in applications where a rigid insulation layer is preferred.

Laurel calcium silicate board is available in bulk densities of approximately 250, 270, and 300 kg/m³. The different density grades provide different levels of flexural strength and compressive strength, allowing buyers to select a suitable specification according to the requirements of the installation.

The material is particularly useful as a rigid calcium silicate insulation layer behind refractory linings or around high-temperature industrial equipment.

Table parameters

Item	Calcium silicate board
Chemical Composition	%	SiO2≥55; CaO≥36; Al2O3≤0.5; Fe2O3≤1.0
Bulk Density	Kg/m3	250(±10%)	270(±10%)	300(±10%)
Flexural Strength	Mpa	≥0.55	≥1.0	≥1.2
Max service temperature	ºC	1100	1100	1100
Compressive Strength	Mpa	≥1.0	≥1.5	≥2.0
Thermal Conductivity (W/m.k)	200ºC	0.08	0.078	0.087
	400ºC	0.106	0.099	0.114
	600ºC	0.132	0.128	0.139
	800ºC	0.165	0.156	0.168
Linear Shrinkage	%	≤2(1000ºC,16 hrs)

Actual product properties should be confirmed against the applicable production specification and testing method before use.

Key Features of Calcium Silicate Insulation

Low Thermal Conductivity

The listed grades provide thermal conductivity values from 0.078 to 0.087 W/m·K at 200°C, increasing with temperature. This makes the material suitable for reducing heat transfer through rigid insulation layers in industrial equipment.

Rigid Structure and Mechanical Strength

Compared with flexible insulation materials, calcium silicate board maintains a rigid structure after installation. Depending on density, the listed grades provide flexural strength of at least 0.55–1.2 MPa and compressive strength of at least 1.0–2.0 MPa.

This makes the board suitable for insulation locations where the material may be exposed to moderate mechanical contact or requires dimensional stability.

High-Temperature Service

The listed grades have a maximum service temperature of 1100°C. Actual operating suitability depends on the temperature profile, heating duration, installation position, atmosphere, and surrounding refractory materials.

For applications approaching the upper temperature range, the board specification and installation method should be evaluated before use.

Dimensional Stability

The listed linear shrinkage is ≤2% after testing at 1000°C for 16 hours. Controlled dimensional change is important for industrial insulation because excessive shrinkage can create gaps between insulation sections.

Easy Cutting and Machining

Calcium silicate board can be cut and shaped according to installation requirements. This allows the material to be adapted to flat surfaces, equipment sections, pipe or duct arrangements, and other geometries.

Calcium Silicate Fire Board for Industrial Applications

The term calcium silicate fire board can refer to different products depending on the application. Industrial calcium silicate insulation boards are primarily used as thermal insulation in high-temperature equipment, while building fire-protection boards may be manufactured to different formulations and standards.

Laurel's refractory calcium silicate board is positioned for industrial thermal insulation rather than as a substitute for a certified building fire-protection panel.

For industrial applications, buyers should evaluate temperature resistance, thermal conductivity, density, mechanical strength, dimensions, moisture conditions, and installation requirements before selecting a board.

Industrial Applications

Laurel calcium silicate insulation is used in various industrial environments where rigid thermal insulation is required.

Typical applications include:

Industrial furnaces and heat-treatment equipment
Cement and lime kilns
Ceramic and glass processing equipment
Boilers and power-generation equipment
Petrochemical equipment
Flues and ducts
High-temperature tanks
Thermal chambers
Backup insulation behind refractory linings
Rigid insulation sections around industrial equipment

For furnace and kiln construction, calcium silicate board may be used as a backup insulation layer together with refractory brick, insulating brick, or other refractory materials, depending on the lining design.

Features

How to Select the Right Calcium Silicate Board

Selecting a calcium silicate board should begin with the actual operating conditions rather than the nominal temperature rating alone.

Operating Temperature

Confirm both the normal working temperature and possible temperature peaks. The listed Laurel grades have a maximum service temperature of 1100°C.

Density and Mechanical Requirements

Higher-density grades generally provide higher mechanical strength within this product range. Select the density according to whether the insulation will experience mechanical contact, loading, or handling requirements.

Thickness

Insulation thickness should be determined according to the required heat-loss control, available installation space, equipment temperature, and overall lining design.

Board Dimensions

Standard dimensions may be suitable for flat surfaces, while customized cutting or machining may be useful for irregular equipment sections.

Installation Environment

Consider moisture exposure, mechanical fixing, surrounding refractory materials, thermal cycling, and accessibility during installation.

Calcium Silicate Board China Factory Supply

For industrial buyers looking for calcium silicate board China suppliers, manufacturing consistency is an important consideration.

Laurel operates as a calcium silicate board factory supplying rigid insulation materials for industrial B2B projects. Production focuses on controlled raw materials, density, mechanical strength, dimensional accuracy, and thermal performance.

Buyers sourcing calcium silicate board from China should confirm:

Chemical composition
Bulk density
Thermal conductivity
Flexural and compressive strength
Maximum service temperature
Board thickness and dimensions
Packaging requirements
Order quantity
Delivery requirements

Providing these specifications before ordering helps ensure that the supplied calcium silicate board matches the intended application.

Calcium Silicate Board Price

The calcium silicate board price depends on several factors rather than being a fixed value for every order.

Important cost factors include:

Board density and grade
Thickness
Length and width
Order quantity
Customized dimensions or machining
Packaging
Loading requirements
Shipping destination and logistics

For B2B industrial procurement, requesting a quotation based on the complete product specification is more useful than comparing a generic calcium silicate board price without considering grade and dimensions.

Laurel provides specification-based quotations for industrial buyers. Send the required thickness, dimensions, density, quantity, application, and delivery destination to obtain a product quotation.

Calcium Silicate Board Factory for B2B Supply

Laurel supports industrial customers, refractory contractors, distributors, equipment manufacturers, and other B2B buyers requiring calcium silicate insulation materials.

As a calcium silicate board factory, we can discuss product specifications according to the application instead of offering a single standard grade for every project.

For repeat procurement, buyers can also provide previous product specifications or technical drawings so that the required dimensions and material grade can be reviewed before production.

Frequently Asked Questions

What is calcium silicate board used for?

Calcium silicate board is mainly used as rigid thermal insulation in furnaces, kilns, boilers, ducts, tanks, thermal chambers, and other industrial equipment.

What temperature can calcium silicate board withstand?

The listed Laurel grades have a maximum service temperature of 1100°C. Actual suitability should be determined according to the continuous operating temperature, thermal cycling, installation position, and application conditions.

Is calcium silicate board the same as calcium silicate fire board?

Not necessarily. Industrial calcium silicate insulation board and building fire-protection board can have different formulations, performance requirements, and applicable standards. The product should be selected according to its intended application.

How does calcium silicate board compare with ceramic fiber blanket?

Calcium silicate board is rigid and provides dimensional stability and mechanical strength, while ceramic fiber blanket is flexible and easier to fit around irregular surfaces. The better choice depends on the installation position and insulation design.

What information is needed to quote calcium silicate board?

Please provide the required density or grade, thickness, dimensions, quantity, application temperature, installation environment, and delivery destination. Drawings can also be provided when customized shapes or machining are required.

Can Laurel supply calcium silicate board in bulk?

Yes. Laurel provides calcium silicate board for B2B industrial procurement, including bulk orders and specification-based supply.

Request a Calcium Silicate Board Quotation

If you are sourcing calcium silicate board for furnaces, kilns, boilers, ducts, tanks, or other industrial insulation applications, send us your required dimensions, thickness, density, quantity, application temperature, and delivery destination.

Laurel can review your requirements and provide a specification-based calcium silicate board quotation for your project.

Applications

Steel Industry

Aluminum Industry

Cement Industry

Glass Industry

Foundry Industry

Other metallurgical industries

Refractory Calcium Silicate Board for High-Temperature Industrial Insulation

Insulation and Refractory Materials