foam air filter with catalyst

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Ceramicfoam filter is a kind of effective molten metal filter. It’s three-dimensionalconnected mesh skeleton structure and high porosity makes it has manyadvantages,large surface area of slags collection,largeinner surface area of filtering,Small flow resistance,goodfiltering effect,etc.

Functions of ceramic foam filter
decontaminatethe melting metal liquid,Simplified gating system,Improve casting qualityrate,Reduce casting internal re-oxidation defects.Reduce the surface defectsafter 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)
Dimension (mm)	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
Dimensi ons (mm)	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

Q: What are the poor filtration effects of vacuum disc filters?: The spindle speed is slow, the formation time of growth in the area of vacuum filter cake, production capacity increased gradually, but because the unit time of grout thickness and spindle speed slow is proportional to, so the ceramic filter capacity in a range of showing the highest.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.

Q: Can the plate filter press pass through the filter plate?: Specific, it is necessary to choose the filter characteristics according to different materials. Plate and frame filter press: plate and frame filter press is an industrial realization of solid, liquid separation, plate and frame filter press is suspension, liquid-solid, liquid two phase, applied to chemical, ceramics, oil

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.

Q: The vacuum degree of the ceramic filter is normal and the cake water is large: The vacuum degree of the ceramic filter is normal at about -0.08MPa. Under normal circumstances, the water content of the filter cake treated with a ceramic filter is about 10%, and the moisture content of the tail filter cake is about 15%. The water content of the filter cake increases with the increase of water content in the ceramic filter. I analyze the reasons from two aspects.

Q: What is the reason that the ceramic filter does not absorb mineral powder?: There may be a fault filtrate pump, diaphragm pump damage, pump mechanical seal failure, a leak, two is no output or output to the liquid, the pressure is too low, the cleaning effect is not good, the pressure is too large, will cause damage and reduce the concentration of slurry filter plate.

Q: Does the ceramic factory use hydrochloric acid?: For the use of a long time, the method 1, the effect is still no significant improvement, that is how to plug the ceramic filter plate regeneration? The ceramic filter plate with uneven or non sucking slurry can be removed, and oxalic acid or other acid liquid with certain concentration and certain temperature can be taken together to dredge the microporous of the ceramic filter plate. (do not recommend sulphuric acid)

Q: The vacuum degree of the ceramic filter is normal and the cake water is large?: The concentration, particle size and mud content of the raw materials are not suitable for or due to changes, which are no longer suitable for dehydration using ceramic filters

Q: Excuse me, what's the reason that all ceramic filters do 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: What is the reason that the whole ceramic filter does not attract ore?: Vacuum system failure, no vacuum or vacuum can not meet the requirements. Should check the vacuum pump and vacuum piping, distribution head, ceramic plate, such as failure or leakage.Whether the ore conditions are changed, such as pulp type, mud content, fineness, concentration, etc..

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.

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