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Deep bed filter, deep bed filtration

The ceramic foam filter filtration(CFF), cartridge filtration, and the deep bed filter system(PDBF) are the main three kinds of aluminum filtration methods. The deep bed filtering device is made up of multiple layers of alumina balls and a layer of alumina gravel of appropriate size stacked uniquely, and the thickness of the filter medium reaches 500 mm.

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Parameters



Alloy aluminum filtering rangeSeries 1-8
Aluminum liquid temperature700-760 


Device model

Filtering capacity(T/h

ADBF 10

10

ADBF 25

25

ADBF 35

35

ADBF 45

45

ADBF 60

60

Customized

Customized






Deep bed filter

The ceramic foam filter filtration(CFF), cartridge filtration, and the deep bed filter system(PDBF) are the main three kinds of aluminum filtration methods. The deep bed filter is made up of multiple layers of alumina balls and a layer of alumina gravel of appropriate size stacked uniquely, and the thickness of the filter medium reaches 500 mm. The size and stacking method of alumina balls and gravel should be adjusted according to different alloys. Inclusions are mainly adsorbed on the surface of the medium in four ways: direct interception, Brownian motion, inertial force, and gravitational precipitation.

Deep-Bed-Filtration-Device.jpg

Aluminum liquid flow of deep bed filtration


The deep bed filtration feature


Deep bed filtration has those four advantages and one disadvantage.


Advantages

1. The best filtering effect. 

2. Only the filter can be used for filtering alloy aluminum liquid.

3. Low running cost on filtration process.

4. Biggest filtering flow.


Disadvantages

1. Highest purchase cost.




The DBF application


Applying for filtering 1-8 series alloy aluminum


The DBF is the most efficient aluminum filtration system, which is widely applied in the high-precision aluminum casting industry, such as aerospace aluminum alloy materials supply.