Alumina Ceramic Foam Filter For Molten Aluminium Filtration

Aluminium Ceramic Foam Filter Plate is suitable for the temperature of 1000 ℃, suitable for the filtration and purification of aluminum and alloy solutions.

Alumina foam ceramic is a kind of foam material made from high purity alumina. The foam ceramics have the characteristics of uniform porosity, high temperature resistance, heat shock resistance, wear resistance and chemical stability.

Products are widely used in casting processing, water treatment, chemical industry, environmental protection and other industries. It is the ideal liquid aluminum filter; Catalyst support, and good sound insulation, thermal insulation material. Product shapes, sizes, and voids PPI can be designed and manufactured on request.

In order to meet the increasing quality requirements of aluminum castings, the use of alumina ceramic foam filters (plates) is becoming more and more important. Filters are also widely used in ordinary sand casting, such as wet mold casting, and fixed mold casting, such as automotive aluminum parts casting.

User Manual of Ceramic Foam Filters:

1. Clean filter box

2. Gently put the filter plate into the filter box, and press the sealing gasket around the filter plate by hand to prevent the flow of molten aluminum.

3. Evenly preheat the filter box and filter plate to make it close to the temperature of the molten aluminum. Preheat to remove moisture and facilitate initial instant filtration. Preheating can be carried out using electric or gas heating. Under normal circumstances, it takes about 15--30 minutes.

4.Pay attention to the change of the aluminum hydraulic head during casting. The normal initial pressure head is 100-150mm. When the molten aluminum begins to pass, the pressure head will drop below 75--100mm, and then the pressure head will gradually increase.

5.During the normal filtration process, avoid knocking and vibrating the filter plate. At the same time, the launder should be filled with molten aluminum to avoid too much disturbance of the aluminum liquid.

6.After filtration, take out the filter plate in time and clean the filter box.

The other applications of Alumina foam ceramic filter plate:

1. Copper alloy casting filtration:

In the casting process of Non-ferrous metal melt (brass, bronze, zinc, tin) also will generate oxidation, non-metallic debris and a large number of waste products. It can greatly reduce the rate of scrap if use foam ceramic filter plate. 1.0 ~ 1.2mm mesh with cordierite material is best choice for the filtration of copper alloy.

2. Catalyst carrier for vehicle exhaust purification processor:

The foam ceramics have been widely used as the carrier of automobile exhaust catalytic purifier because of its large surface area, good thermal stability, wear resistance, resistance to poisoning and low density. 

The foam ceramic automobile exhaust catalytic purifier installed in the exhaust pipe of the gasoline car can make the harmful gas CO,HC,NOx discharged from the gasoline car into CO2, H2O,N2, the conversion rate can reach more than 90%; Used in diesel vehicles, carbon particle purification rate in more than 50%. When the foam ceramic filter element is full of carbon particles, catalytic oxidation method or electronic combustion method can be used to regenerate, constantly eliminate the deposited carbon particles, to achieve the purpose of long-term use.

3. In special fields:

The other applications under high temperature conditions, foam ceramics have excellent thermal radiation characteristics, which are used to enhance heat transfer and combustion technology in porous media with remarkable results. 

Foam ceramic can also be made into a photocatalyst carrier, coated with nano titanium dioxide on the foam ceramic carrier, excited by ultraviolet light, has strong photocatalytic oxidation and degradation characteristics, can catalyze the degradation of organic matter and microorganisms, so as to purify the air.

Foam ceramics can also be made into chemical tower packing, gas distribution materials, gas stove energy-saving combustion plate.