Technical parameters of hard calcium silicate stone with a density of over 500

Release Time: 2025-12-11

What are the technical parameters for hard calcium silicate stone slabs with a density of over 500? Hard silica calcium stone slab is a common insulation material. The main raw materials of hard silica calcium stone slab are calcium hydroxide and quartz sand, which are generated by high-temperature and high-pressure hydrothermal reaction. The size can be customized according to the needs of use, and it has the characteristics of high temperature resistance, good insulation, high strength, fire insulation, low thermal conductivity, and excellent thermal shock resistance. The finished hard silica calcium stone slab can withstand a high temperature of 1050 ℃.

In general, the process flow of hard calcium silicate (6CaO · 6SiO2 · H2O) type calcium silicate insulation board is as follows: first, limestone is calcined to produce lime; Secondly, mix lime, crystalline silica powder, water, and additives (such as zirconium oxychloride and strontium nitrate) together and mix well; Next, use a steam pressure stick with a stirrer to synthesize a slurry of hard calcium silicate stone; Then, fibers are added, filtered through steel molding, and dried to obtain insulation products.

The technical parameters of hard silica calcium stone slab are shown in the following figure:

Items \ Product	Calcium silicate board
Classified Tem (℃)	1000℃/1832℉
Density (kg/m³)	200-500
Bending Strength (Mpa)	≥0.5
Conpressive Strength (Mpa)	≥0.9
Thermal Conductivity （w/m.k）	≤0.056
Linear Shrinkage （%）	≤1.5
Max. working Tem. (℃)	650/1000/1100
Size (mm)	1000500/600300

The price of hard silica calcium stone slabs is mainly influenced by factors such as parameters, quantity, and region, and there are certain differences. Therefore, in order to determine the accurate price of hard silica calcium stone slabs, it is necessary to understand their parameters, quantities, and regions in order to provide an accurate quotation.

What are the technical parameters for hard calcium silicate stone slabs with a density of over 500? Rosewool Insulation Refractory Co.,Ltd 1200 * 600 aluminum foil rock wool board, when used in combination, can form a composite protection system of "insulation+load-bearing+fire prevention", suitable for insulation and fire-resistant engineering of key parts such as boilers, flues, and high-temperature pipelines in steel plants. The two have uniform dimensions and strong installation coordination, which can further improve the overall stability and service life of the project. Whether it is the overall insulation project of a large steel plant or specialized cooperation in specific fields, Rosewool Insulation Refractory Co.,Ltd can work together with you to overcome industrial insulation problems with excellent products, perfect services, and flexible models, achieving a dual improvement of economic and social benefits. We sincerely invite partners from all walks of life to join hands with Rosewool Insulation Refractory Co.,Ltd, jointly expand the steel industry insulation market, and create a green and energy-saving new future!

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