Silicon Carbide Ceramic Foam Filter

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Specifications

Include:
SiC Foam Filter/CFF-01
Alumina Foam Filter/CFF-02
Zirconia Foam Filter/CFF-03
Magnesium Foam Filter (less used)

Product Description

Ceramic foam filter is a kind of effective molten metal filter. It’s three-dimensional connected mesh skeleton structure and high porosity makes it has many advantages,large surface area of slags collection,large inner surface area of filtering,Small flow resistance,good filtering effect,etc.

Functions of ceramic foam filter

decontaminate the melting metal liquid,Simplified gating system,Improve casting quality rate,Reduce casting internal re-oxidation defects.Reduce the surface defects after machining of the castings

Physical and Chemical Properties

Material

Alumina

Silicon Carbide

Zirconia

Magnesia

Color

White

Grey black

Yellow

Dark yellow

Pore Density

8-60ppi

8-60ppi

8-60ppi

8-60ppi

Porosity

80-90%

80-90%

80-90%

80-90%

Refractoriness

≤1100°C

≤1500°C

≤1700°C

≤1000°C

Bending Strength

>0.6Mpa

>0.8Mpa

>1.0Mpa

>0.6Mpa

Compression Strength

>0.8Mpa

>0.9Mpa

>1.2Mpa

>0.8Mpa

Volume-weight

0.3-0.45g/cm3

0.35-0.5 g/cm3

0.9-1.5 g/cm3

0.35-0.5 g/cm3

Thermal shock resistance

6times/1100°C

6times/1100°C

6times/1100°C

6times/1100°C

Application

Aluminium ,

Aluminium alloys and other

Non-ferrous alloys

Ductile Cast Iron,

Malleable Cast

Iron,Gray iron and other Cast Iron

High melting point metal alloys like Steel,AlloySteel,Stainless Steel etc

Magnesium and High-Active Alloy

For Alumina Casting

Dimensions (mm)

Dimensions (inch)

Pouring Rate (kg/s)

Filtration Capacity (ton)

178×178×50

7×7×2

0.2-0.6

5

228×228×50

9×9×2

0.3-1.0

10

305×305×50

12×12×2

0.8-2.5

15

381×381×50

15×15×2

2.2-4.5

25

430×430×50

17×17×2

3.0-5.5

35

508×508×50

20×20×2

4.0-6.5

45

585×585×50

23×23×2

5.0-8.6

60

For Iron Casting

Dimension (mm)

Pouring Rate (kg/s)

Filtration Capacity (kg)

Grey Iron

Ductile Iron

Grey Iron

Ductile Iron

40×40×22

4

3

65

32

50×50×22

6

4

100

52

75×50×22

9

6

150

75

75×75×22

14

9

220

100

100×50×22

12

8

200

100

100×75×22

18

12

300

150

100×100×22

25

16

400

200

150×150×22

50

36

900

450

For Steel casting

Dimensi
ons (mm)

Zirconia Foam Filter

Pouring Rate(kg)

Filtration Capacity(kg)

50×50×22

3~5

30

50×75×22

4~6

40

75×75×22

7~12

60

75×100×22

8~15

80

100×100×22

14~20

100

50×22

2~6

18

80×22

6~10

50

90×22

8~16

70



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Q:How should the static and dynamic sealing points of the ceramic filter be leaking?
The filtrate pump works to drain or recycle the water that has been pumped out. 6 、 cleaning system work, cleaning system includes backwashing (water pump pressure or height difference pressure), acid liquid (metering pump, automatic acid injection), ultrasonic (ultrasonic work), etc.. 7 、 control system and other electrical systems. In addition, the filter cake which is absorbed and dried on the ceramic filter plate is unloaded automatically by the scraper and then falls on the belt conveyor, and is conveyed to the concentrate storage yard by a belt conveyor.
Q:Influence factors of ceramic filter
On the other hand, as the spindle speed slows down, the thickness of the slurry is thickened, and the moisture of the concentrate is also affected. For viscous material, ceramic filter with ceramic plate to work as filter media, when the cake is formed gradually into the porous filter medium filter cake itself, and the cake is not easy to form a viscous material, forming a dry cake appearance does not slow, the spindle speed is easy to reduce the water content of concentrate. Similarly, the spindle speed is accelerated, the cake formation time in the vacuum zone is shortened, and the slurry thickness is reduced, and the material can be improved for the easy molding material. But the spindle speed is too fast to be cleaned after each cycle of the ceramic plate. As for the viscous material, the cake is difficult to form after the spindle speed increases, and it will affect the capacity. Therefore, the use of ceramic filter should focus on the inherent nature of the concentrate to explore the best spindle speed. Generally, the higher the temperature, the smaller the viscosity of the liquid, the more conducive to improve the filtration rate, reduce the cake or sediment water, while reducing the viscosity of the slurry, can improve the processing capacity.
Q:Beneficiation ceramic filter no problem, the technical parameters are normal, but filter out the concentrate water suddenly excessive, what is the reason?
The ceramic filter ceramic plate ceramic microporous pumping vacuum adsorption concentrate filtration water, the adsorption parameters according to the angle of rotation, reverse cleaning process, check whether there are loopholes in the exhaust pipe, check the ceramic plate use cycle is too long.
Q:What is the working pressure of the ceramic filter?
The backwash pressure is the size of the backwash of the ceramic filter during recoil stage, and the recoil pressure is generally less than 0.12MPa. The greater the pressure, the better the recoil effect, the better the service life and the suction effect of the ceramic filter plate, and the worse the service life and the suction effect of the ceramic filter board. The backwash pressure of the ceramic filter shall be no less than 0.07MPa.
Q:What are the poor filtration effects of vacuum disc filters?
Under normal circumstances, high vacuum, vacuum suction, high production capacity, filter cake moisture control is good. At present, some ceramic filters are equipped with two or multi-stage vacuum system to obtain almost absolute vacuum, and can reach 0.09 ~ 0.098MPa.
Q:What are the causes of the powder moisture in the ceramic filter?
The ore condition has changed, such as high concentration of material, fine grain size and increase of mud content.
Q:The ultrasonic wave of ceramic filter is not good. What's going on?
The earliest filtration was mostly gravity filtration, which was followed by pressure filtration to increase the rate of filtration, followed by vacuum filtration. The drum vacuum filter invented in the early twentieth Century realized the continuous operation of the filter. Since then, various types of continuous filters have appeared. Intermittent operating filters (such as plate and frame press filters) are developed for automatic operation, and the filtration area is becoming larger and larger. In order to obtain the filter residue with low moisture content, the mechanical press filter has been developed.
Q:What are the functions of honeycomb ceramic filters?
High quality and high density straight hole mesh, the product has high heat resistance and impact resistance properties of cast high fever temperature, design straight hole to guarantee the balance between strength and flow, effectively remove impurities and slag particles, the mechanical properties of casting, the surface quality and the qualified rate of products is greatly improved.
Q:What is the reason that the whole ceramic filter does not attract ore?
After the joint cleaning, 0~2 hours of suction effect may be good, 2~4 may drop slightly, 4 hours later will become worse and worse, or even suck. This case should first check the backwash water pressure (instantaneous maximum pressure should not be less than 0.08MPa) is to meet the requirements, should also advance down (to ensure normal and ultrasonic cleaning combined with nitric acid dosage sufficient) and prolong the cleaning time.
Q:The use of water glass as beneficiation agent, copper concentrate in the ceramic filter can not filter, how to do?
Water glass is a kind of adhesive of flotation reagent, after use may cause the pulp viscosity increased, leading to the adsorption resistance of slurry becomes large, when using ceramic filter filtration dewatering, vacuum suction surface of the microporous ceramic filter plate is smaller than the resistance, there may be a suction effect or even not suction. Some flocculant agents can lead to this phenomenon.

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