Formula and physicochemical index of light insulation castable

The lightweight insulation castable is made of perlite, vermiculite, shale ceramisite, poly light ball, combined with cement, and constructed after on-site mixing.

Light insulation castable has the advantages of high strength, small volume density, low thermal conductivity, good insulation performance, convenient construction, etc., it is an ideal choice of industrial boiler insulation material.

Construction method: vibration or manual ramming construction.

Main function: heat insulation, reduce the external temperature of the furnace wall.

Light insulation casting cooking index (acid resistant type) :

SiO2 (%) ≥ 40 45 45 48 52
Bulk density (g/cm3) ≥ 0.8±0.2 1.2±0.2 1.6 1.8 2
Compressive strength at room temperature (MPa) ≥ 3 4 5 8 10
Acid resistance (%)≥ 90 95 95 95 95
Thermal conductivity (350℃±25℃, W/m.K) ≤ 0.25 0.45 0.5 0.55 0.6
Operating temperature (℃) 600 700 800 900 1000