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C-75 neutral lining material
I. General introduction
This product is a coreless induction furnace aluminum (and aluminum alloy) refractory material, the material is neutral. The material with high alumina content material as the main raw material, adding a special binder and anti-erosion, anti-sticking effective ingredients, thus giving the whole material unique hot state performance; The material is a heat-set refractory material, using dry vibration or ramming molding, without maintenance and long baking cycle, heating through ceramic reaction sintering, to obtain extremely high hot surface strength, to resist the erosion and penetration of liquid aluminum, while the unsintered liner to maintain a granular state, the liner can prevent local stress concentration, prevent the extension and expansion of hot surface cracks. This ** is added to improve the corrosion resistance of aluminum and aluminum alloy, anti-sticking slag special ingredients, tied good furnace lining, with aluminum and aluminum alloy no reaction, no erosion, no sticking slag and other advantages.
Second, the main physical and chemical properties
Main chemical composition: Al2O3 70% SiO2 30% body density > 2.7g /cm3
Mineral phase: Mullite > 70% corundum 25% glass phase < 5% porosity < 20%
Compressive strength after firing (Mpa) 800℃×3h > 6.0
> 10.0 at 1000 ° C x 3h > 15.0 at 1300 ° C x 3h
Load softening point > 1620℃ after firing line change +0.4%
Excellent aluminum corrosion resistance Initial sintering temperature < 800℃
Packaging standards and storage methods
25kg/ bag (composite bag packaging) storage period of 6 months, put in a dry place to prevent moisture absorption.
4. Construction and baking system
For details, please refer to Hubei Anaijie Company molten aluminum "Furnace, oven sintering process Description".
