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Light weight refractory insulation bricks JM23 JM26 JM28

Light weight refractory insulation bricks JM23 JM26 JM28. The lightweight mullite brick adopts imported plate corundum and high purity fused alumina as the main raw materials...
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The lightweight mullite brick adopts imported plate corundum and high purity fused alumina as the main raw materials. It is made of high temperature shuttle kiln through mixing, drying and forming with advanced superfine powder addition technology.Mullite lightweight bricks are widely used in residue gasifier, synthetic ammonia converter, carbon black reactor and refractory kiln.The dimensions, physical and chemical indexes and service life of the products all meet the requirements of customers.

Technical data sheet

Item JM23 JM 26 JM28 JM 30
Chemical Composition (%)
Al2O3 42 56 67 73
SiO2 55 41 30 24
Fe2O3 ≤1 ≤0.8 ≤0.7 ≤0.7
K2O + Na2O 1.1 1.7 1.7 1.7
Physical Properties
Density (g/cm3) 0.6 0.8 0.9 1
Classification Temperature (°C) 1300 1400 1500 1550
Cold Crushing Strength (MPa) 1.2 1.8 2.5 3.3
Modulus of Rupture (MPa) 1 1.7 2.3 3.1
Permanent Linear Change (%) x 24hrs ≤0.6 ≤0.6 ≤0.8 ≤0.9
Thermal Expansion (%) 1000°C 0.5 0.52 0.52 0.53
Thermal Conductivity (W/m.k)
350°C 0.18 0.25 0.33 0.38
400°C 0.2 0.29 0.35 0.4
600°C 0.24 0.32 0.37 0.42

Production Equipment

Production capacity: Our factory actively response to government environmental protection policy, we designed and built the fully automatic controlled high temperature gas tunnel kiln (1700℃), and got capacity of annual output 70,000 tons of high quality refractory products.

Testing Testing Testing Testing
Packing Details
Packing details:

★Bricks: Fumigated wooden pallet with log paperboard covered and stainless steel band strapping, the whole outside is wrapped with thermoplastic film. Or carton packaging.

★Wooden pallet size: usually 92*92cm (standard brick)

★Castable: Ton bag with rain film and 25kg bags inside

★Or according to customer’s requirements


★Port of dispatch: Tianjin port; Qingdao port

★Delivery time: According to customer’s demand or two sides negotiate

Our Services

We provide you 

★Timely response: Timely response to your inquiry within 24 hours and provide solution. 

★Competitive Price: Make the products competitive in your market. 

★Free sample: Free sample are offered, trial order are accepted for quality evaluation. 

★Strict quality control: We set Quality Management System, from the raw material to finished products, produce high quality products according to chemical & physical specifications strictly to satisfy customers’ needs.

★Fast delivery time: Within 3-30 days according to your quantity after receiving your advance payment. 

★ Professional services: Provide pictures from order to delivery. Inspect report by our country’s designated authority and oversea services if necessary.

We are here for you!

Certification:  (ISO 9001:2015)



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