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MTX CFF

Category: Filter plate
Ceramic foam filter is the last process technology for the purification of aluminum melt, and it is particularly important to choose the second generation of ceramic foam filter. Choose the best filter plate to filter according to the environment of each foundry to obtain high cleanliness of aluminum melt.
Product Details

Ceramic foam filter is the last process technology for the purification of aluminum melt, and it is particularly important to choose the second generation of ceramic foam filter. Choose the best filter plate to filter according to the environment of each foundry to obtain high cleanliness of aluminum melt.

 

The second-generation foamed ceramic filter plate produced by Matexin has the following advantages:
1. High strength, no slag (ceramsite)
2. Three-dimensional network shape, better than honeycomb foam type
3. High opening rate, filtration Small resistance, small normal static difference
4. High surface energy, strong adsorption of impurities
5. Excellent thermal shock resistance

 

Foam ceramic filter plate (common specifications)

Specification
mm(inch)

Flow range of molten aluminum
kg/min

Filter amount
t

Aperture (mesh)
ppi

Select reference

178×178×50(7)

25-50

3

10
20
25
30
35
40
45
50
60
70

Can
according to
customer
households
to
seek
and
set

1. 10-25ppi
for casting 2. 30-60ppi for semi-continuous casting, 50 or 60ppi for high-quality aluminum profiles or plates
3.
50-60ppi for continuous casting and rolling
★Other specifications can be customized according to user requirements

254×254×50(10)

45-100

7

305×305×50(12)

90-170

15

381×381×50(15)

147-280

20

432×432×50(17)

193-367

25

508×508×50(20)

274-521

30

584×584×50(23)

369-700

35

 

 

The second generation foam ceramic filter plate (three-dimensional three-dimensional mesh frame)

The first generation of foam ceramic filter plate

Material
square

X'Pert Pro MPD diffractometer analysis The
main crystal phase α-Al2O3, multi-morphic mullite, no quartz glass phase.

X'Pert Pro MPD diffractometer analyzes the
main crystal phase α-Al2O3, cordierite or mullite or spinel phase, and quartz glass phase.

Mesh
structure

The three-dimensional network has a uniform bone structure, and the skeleton supports have microscopic cracks and microscopic pinholes. It has strong thermal shock resistance and does not lose ceramsite. The microscopic defects are conducive to the secondary deposition of fluoride and increase the adsorption capacity of the impurities in the molten aluminum. .

The uneven skeletal structure of the three-dimensional three-dimensional network, especially in the horizontal direction of the longitudinal section, has blind holes, which are honeycomb-shaped. The frame support is smooth or there are many broken branches and cracks, and the vibration is easy to drop the ceramsite slag, which is intercepted by mechanical collision.

Phenomenon

Compressive strength>4.5MPa, bending resistance 1.5MPa, thermal shock resistance (750°C room temperature)>5, no ceramsite, strong affinity for aluminum impurities, high impurity removal efficiency, manifested by large changes in static pressure difference.

Compressive strength <4 MPa, generally 1.0-1.5 MPa thermal shock resistance <5, easy to fall off ceramsite slag, relatively low impurity removal efficiency, manifested by little change in static pressure difference.

Exterior

Pink or pure white
slap, no ceramsite slag will be dropped.

White or off-white
beat, drop the ceramsite slag, and even more vibrate.

Misunderstanding

Adsorption filtration has a high impurity removal rate. Sometimes due to too much impurity, the static pressure difference increases sharply, resulting in insufficient flow and "clogging".

Due to the fact that there are many blind holes in the middle of the cross section, the effective filtration volume decreases, causing insufficient flow or even clogging.

 


Foam ceramic material filtration and purification mechanism
1. Through mechanical filtration such as screening inertial collision interception, diffusion interception, friction, sedimentation, etc., the filtration efficiency is proportional to the mesh aperture of the foam ceramic. The smaller the mesh, the stronger the interception of small particles;
2. Sedimentary layer or filter cake layer effect, as the particles in the melt are deposited and the curved and curved interconnected and uneven grid support walls, the ability to capture miscellaneous particles is improved;
3. Due to the grid support The rough surface formed by the gap of the body surface increases the interface energy between the molten aluminum stream and the ceramic solid surface, and promotes the flow of particles in the molten aluminum stream to be more disordered, which is conducive to the capture and deposition of solid particles;
4. Due to the net Microscopic cracks and pinholes on the surface of the skeletal support body are pre-deposited with fluoride with strong affinity for particles such as Al2O3, which promotes a complete filter cake layer effect and strong chemical adsorption, and the ability to capture retained impurity particles is stronger.


  Furthermore, from the temperature field effect of the melting process and the transmission process of the metal melt structure, the concentration of the alloy solute will inevitably be formed. The metal melt is redistributed-integrated-redistributed-and integrated again, which is also a good alloying treatment process. Some high melting point metal phases and compounds re-aggregate and grow, and the fine impurities will accumulate and grow up to facilitate filtration and capture. This can also be explained by the changes in the concentration of H, Al2O3, Fe phase, and Ti phase before and after filtration, especially two-stage filtration or The pore gradient thick plate filtration is more obvious.

  Matshin foam ceramic filter plate is a Sino-Russian cooperation, jointly developed by Matshin and Russian academician Professor Yuri. Using liquid nano-preparation technology to realize low-temperature sintering, it is a special functional material with energy saving, emission reduction and low consumption. The material has the advantages of large surface energy, high strength and long life. The nano- and micro-grade materials coated on the mesh dendrites can greatly improve the filtering efficiency and sound absorption and noise reduction effects of the materials. It can be used as a clean product for the production and application of high-end aluminum materials, that is, high-temperature liquid metal filter materials. The characteristics are:

(1) Three-dimensional network structure, the mesh diameter is less than 0.5 mm;

(2) The light spot cannot be detected by light transmission, and the number of single blind holes is not more than 5;

(3) Compressive strength 2.5Mpa;

(4) It can withstand heating at 1000-1200 degrees without losing ceramsite or cracking.

 

Keyword:
MTX CFF
Filter plate

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