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Diatomite insulation brick is often used as insulation for high-temperature kilns and other thermal equipment. Diatomite bricks comprise a small amount of binder and combustible materials added to diatomite. The production of diatomite bricks requires wetting, mixing Raw materials, molding, firing, and other steps.

Physical and chemical indicators of diatomite insulation bricks

Products PropertiesFR-0.5FR-0.6FR-0.7FR-0.8FR-1.0
Bulk density g/cm3≤ 0.5≤ 0.6≤ 0.7≤ 0.8≤ 1.0
Cold crushing strength kg/cm2≥ 8≥ 12≥ 20≥ 35≥ 50
Reheat shrinkage % at 900° C×8hrs0.
Thermal conductivity W/(M. K)at 300° C mean0.
Max service temp ° C900900900900900
Chemical composition %

The main chemical composition of diatomite insulation firebrick

Diatomite insulation brick’s main chemical composition is SiO2, followed by Al2O3, and impurities such as iron oxides, potassium, sodium, calcium, and magnesium.

Advantages of diatomite bricks

  1. The fire-resistant thermal expansion rate is small, and not easy to deform.
  2. It has lightweight and high compressive strength.
  3. Good heat preservation effect, and reduce energy consumption.
  4. Low bulk density and small thermal conductivity.
  5. The construction is convenient and the surface is smooth.

Application of diatomite insulation bricks

Diatomite insulation bricks are often used in electric power, metallurgy, chemical industry, and cement industries, especially in pipes and fireplaces of thermal equipment.

Diatomite insulation brick supplier certificate

refractory raw material certificate
refractory raw material certificate

Rongsheng success cases

refractory customers
refractory customers

Rongsheng factory has been established for 20 years, exported to more than 80 countries, and has more than 1,000 transaction customers. We hope to establish a long-term cooperative relationship with our customers.

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