GMK23 Anorthite Insulating Firebrick 
—Equivalent Quality to Industry-Leading 23 Grade Insulating Firebrick

GMK23 Anorthite Insulating Firebrick —Equivalent Quality to Industry-Leading 23 Grade Insulating Firebrick

GMK23 Anorthite Insulating Firebricks, produced through an innovative slurry foaming casting process, deliver superior thermal efficiency and environmental sustainability. The microporosity generated by this process ensures ultra-low thermal conductivity and exceptional thermal shock resistance.

Production Process:

Formulated with a blend of clay, calcium carbonate (CaCO?), and an organic foaming agent, GMK23 bricks undergo a high-temperature firing process that forms both anorthite (CaO ? Al?O? ? 2 SiO?) and mullite (3Al?O? ? 2SiO?) phases. This process enhances the bricks' insulating and thermal properties while preventing sulfur dioxide (SO?) emissions.

GMK23 Insulation Brick
GMK23 vs. Traditional ASTM 23 Grade Insulating Firebrick —Environmentally Friendly and Energy Efficient from Production to Application

With 1 m3organic foaming agent replacing 400 m3 sawdust and polystyrene balls, our production method is more sustainable and energy-efficient.

Extrusion VS Slurry Foam Casting

The image below compares the pore size distribution of traditional extruded insulating bricks and insulating bricks produced by the slurry foaming casting method, as observed under an electron microscope.

The comparison reveals that the pore size of bricks produced by the slurry foaming casting method is significantly smaller than that of extruded insulating bricks. These micro-pores reduce conduction, convection, and radiation during energy transfer, resulting in a much lower thermal conductivity. This greatly enhances the energy saving potential of the kiln.

Traditional IFB pore size VS GMK23 IFB pore size

Key Benefits:

  1. Low Thermal Conductivity
  2. Superior Thermal Shock Resistance
  3. High Mechanical Strength at Operating Temperatures
  4. Excellent Resistance to Corrosive Alkali Environments
  5. Environmentally Friendly Production with No SO? Emissions

Testing Report from Italy

Typical Application:

GMK23 Insulation Brick Application

Used as hot face refractory lining or back-up insulation in various industries, such as:

? Chemical & Petrochemical: Kilns, flues, refining vessels, heaters, reactor chambers.

? Glass: Melters, regenerators, tin baths, distributors, tempering furnaces.

? Ceramics: Roller kilns, tunnel kilns, shuttle kilns, electricity furnace.

? Aluminum: Anode baking furnaces, aluminum electrolytic cells.

? Lithium-ion Battery: Cathode and anode furnaces.

? Iron & Steel: blast furnaces, hot blast stoves, reheating furnaces, bright metal annealing furnaces.

? Industrial Furnaces: Electricity furnace, carburizing furnaces, heat treating furnaces, electronic product furnaces, refractory sintering furnaces.


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