Refractory materials for aluminum industrial furnaces are generally refractory bricks and castables, but the selection of refractory materials in different parts varies greatly. Refractories for aluminum industrial furnace shall have high sintering strength, fine pore size, low content of SiO2, Na2O and K2O, and good sintering performance of furnace lining at 800 ℃. Zhengzhou Huaxin high temperature material Co., Ltd. has sorted out the commonly used refractory materials for aluminum industrial furnace for your reference only.
For the insulation layer of alumina rotary kiln, a layer of refractory fiber felt is laid on the kiln shell, and then diatomite, floating bead brick or light clay brick are laid. Some now use lightweight refractory castables. The working lining of the pre heating zone is built with clay bricks, and the high-temperature calcination zone is built with high alumina bricks or phosphate combined with unburned high alumina bricks
At present, amorphous refractories have been widely used in aluminum industry, such as low calcium aluminate refractory castables for calcination zone, steel fiber reinforced wear-resistant castables for kiln mouth, kiln cover, kiln tail and so on.
The flash furnace is to install heat-resistant steel anchor nails or ceramic anchor nails on the furnace shell, then lay a layer of 20mm thick refractory fiber felt, and finally pour 200 ~ 300 thick refractory castable.
The working lining of reverberatory furnace of aluminum smelting furnace in contact with liquid aluminum is generally built with high aluminum brick with aluminum content of 80 ~ 85%; Mullite brick or corundum brick shall be used for smelting high-purity metal aluminum. Silicon nitride and silicon nitride brick are used in the erosion wear parts of furnace hearth slope such as waste aluminum. Aluminum tank and aluminum outlet are seriously eroded by molten aluminum. Generally, self-adhesive or silicon nitride bonded silicon carbide brick is used, and zircon brick can also be used as lining. Generally, clay brick, clay refractory castable or refractory plastic are used as lining, which is not in contact with molten aluminum.
The lining material of induction furnace for smelting aluminum and aluminum alloy is generally high aluminum dry ramming material, or silicon carbide is added to alumina dry ramming material, which is not easy to cause leakage.
Huaxin high temperature material Co., Ltd. is a refractory brick manufacturer in Henan, specializing in the production of light insulation bricks and various types of refractory bricks. With more than 30 years of rich experience, the manufacturer adopts high-quality raw materials, large-scale standardized production and direct sales, which can ensure the quality of products. It can also provide customers with product customization services, as long as the product drawings and specification information are provided to us.
