What is Calcium Silicate Board?

Calcium Silicate Board is a non-metallic material with calcium silicate as the main component. It is made of silicate cement, silica sand, lime, reinforcing fiber and other materials through high temperature autoclaving. Calcium silicate board has the advantages of light weight, high strength, fire resistance, moisture resistance, sound insulation, and insect resistance. It is an environmentally friendly building material.

Production process

The production process of calcium silicate board mainly includes the following steps:

1. Raw material preparation: Mix silicate cement, silica sand, lime and other raw materials in a certain proportion.


2. Molding: Add water and reinforcing fiber to the mixed raw materials, stir and press them into boards on a molding machine.


3. Autoclaving: Put the molded boards into a high-temperature and high-pressure autoclave for steam curing to densify their internal structure and improve their strength and stability.


4. Drying and cutting: The autoclaved boards are dried and then cut into different sizes as needed.


5. Surface treatment: According to the use requirements, the surface of the board can be coated, such as waterproof coating, fireproof coating, etc.

Features and Benefits

• High temperature tolerance: Calcium silicate board can be used for a long time at temperatures up to 1100°C, making it suitable as a high-temperature insulation material.


• Thermal insulation performance: Its low thermal conductivity (usually 0.07-0.1 W/m·K) makes it an ideal insulation material.


• Fire resistance: Calcium silicate board does not burn, meets fire protection standards, and is the preferred material for building structures such as fire partitions, fire doors, and fire walls.


• Moisture resistance: It has good hydrophobicity and strong water resistance, making it suitable for environments with high humidity.


• Lightweight and high strength: Compared with traditional masonry materials, calcium silicate board is light in weight, has high compressive strength, and is easy to install and transport.


• Environmental protection: Calcium silicate board is non-toxic and odorless, does not contain harmful substances such as formaldehyde, and meets environmental protection requirements.

Application Areas

Calcium silicate board is widely used in the following fields:

• Construction industry: used as building components such as wall panels, ceilings, fireproof partitions, and fireproof doors.


• Industrial field: used as thermal insulation materials for high-temperature furnaces, such as steelmaking furnaces, heat treatment furnaces, etc.


• Shipbuilding: used as thermal insulation and fireproof materials for ship bulkheads.


• Power industry: used as thermal insulation and fire protection for cable trays and power equipment.


• Chemical industry: used as thermal insulation and anti-corrosion protection for chemical reactors and pipelines.

Future Development

As the concepts of green building and energy conservation and environmental protection become more popular, the market demand for calcium silicate boards will continue to grow. In the future, the production technology of calcium silicate boards will be further optimized to improve their mechanical properties, durability and environmental protection. At the same time, the application scope of calcium silicate boards will also be expanded to more fields, such as new energy, aerospace and other high-end manufacturing industries.

in conclusion

As a highly efficient thermal insulation material, calcium silicate board has become an indispensable part of the construction and industrial fields due to its excellent performance and wide application prospects. With the advancement of technology and the continuous improvement of environmental protection requirements, the market prospects of calcium silicate board will be broader and its application in various fields will be more in-depth.