3. Brief Introduction
RX precise vacuum filter combines mechanical and electric machine, ceramic tube with micro-hole and ultra-
sound to separate solid and liquid depending on vacuum suction and capillary function with high efficiency and
energy-saving equipment; they are widely used for mine, metallurgy, chemical industry and environmental protec-
tion industry.
Working Principle
Slurry-sucking district: screen plate which is dipped in the slurry will be formed into one layer of filter cake
under capillary function and vacuum pressure, the liquid will enter into distributing valve and drain tan via screen
plate.
Cleaning district: spray the filter cake after coming out of the hopper.
Drying District: filter cake will be dehydrated under high vacuum function.
Discharging district: the scraper will discharge the materials automatically under non-vacuum state.
Back-cleaning district: Ceramic plates will be cleaned from inner part to outer part by industrial water or
filtrate which is passed through distributing valve.Then the jam left on the micro-hole is cleaned. After one period
of application, ceramic board should be cleaned with ultrasonic and acid with low concentration to let the board
work with high efficiency.
Characteristics
1、High vacuum degree (0.09～0.098MPa), filter cake has low water content.
2、Solid content of liquid <25ppm, repeated application is available, drainage is lessened.
3、It can save 90% energy or above in contrast with traditional filter with low consumption and low cost.
4、Filter cake cleaning process is added to clean proper materials.
5、It combines PLC, computer and automatic valve control with high automatization and labor force has been
lowered.
6、Compact structure, covering less floor area, convenient installation and maintenance.
7、Advanced drainage system fits for any working conditions.
- 1 -
RX Precise Ceramic Vacuum Filter
4. - 2-
Sketch of Ceramic Filter
Main Parts: ceramic plate, mainframe, stirring
device,vacuumsystem,cleaningsystemandcontrolling
system.
Control System
Combined computer control or touch screen with PLC control; inlet, filter, clean and
acid prepare all adopt automatic control; stir and main shaft speed reducer all adopt
frequency control, one worker can operate many machines with high automatization,
simple operation,high security and reliability.
Vacuum System
Distributing valve adopts corundum and mirror treatment with good leak-proofness,
wearing resistance, simple structure and long service life (patent) and can be easily
repaired.
Adopt secondary vacuum system to reach vacuum limitation, therefore water
content of filter cake is much lower. Vacuum system has following types: free fall,
automatic drainage(patent) and assistant dehydration.
Cleaning System
Regenerated filtrate system adopts precise filter with good
environmental protection and high energy-saving .
Adopt water supply system with constant voltage which is
safe and reliable.
Ultrasonic and chemical cleaning agent are used to clean
the ceramic board to assure high working efficiency.
Automatic acid preparation can lessen labor force and
risk.
6. Introduction about RX Series of Ceramic Plates
RX whole ceramic filter plate is developed by our company through cooperating with several ceramic institutes
and absorbing foreign advanced technology, we provide our product to have high efficiency and save energy in an
environmentally friendly way. This production is mainly used for dehydration of concentrate minerals such as Gold,
Silver, Copper, Iron, Tin, Cobalt, Molybdenum, Chrome, Sulfur, Phosphorus, Aluminum, Zinc, Nickel and so on.
Also it fits for treatment of sewage and acid waste. The applicable range of materials is from -200mesh (covers 50%）
to 400mesh (covers 90%), and including micron materials. Our products have successfully won our user's confidence
due to its high separation rate, high separation precision, high operation efficiency and excellent technical economic
index, as well as extensive adaptability.
Ceramic Filter Plate is a kind of large porous ceramic disc which is fired by inorganic membrane making
technology. It has following characteristics: large filter area, high intensity and even aperture. Besides, the aperture
size can be adjusted according to actual demands. The basic material is alumina, it has good resistance to acid and
alkali. After a period of application, the ceramic filter board can be cleaned by cycle reverse cleaning, ultrasonic and
chemical cleaning agent and so on, to let the boards work with high efficiency.
Regarding firing process, traditionally the ceramic plate is consisted of two layers of plates which are glued
together to form inner channels. But after long term running, the glue will block the pores to cause "flower spots" on
the surface of the plates.
Considering this phenomenon, our company independently developed a new technology. Now the ceramic plate
is poured in one mould as a whole （We select a kind of special material, when firing under high temperature, this
material is volatilized to form the inner channels.）Thus, the "flower spots" will be avoided, also the ceramic plates
will have higher strength and not easy to be broken.
Recently, for mine production decreased obviously after several times ore absorption, our company developed a
new type of membrane surface. The porosity of the new membrane can reach 55.60%, the microporous inwalls are
smooth, and the tiny particles can pass smoothly in ore absorption process, so the jams will be reduced better.
Meanwhile, after long-term use and backwash, the regeneration ability is obvious, the service life is longer, so as to
achieve the maximum efficiency of plate surface, and improve the output.
- 4 -
7. RX 8m2
ceramic filter plate is first developed by our company through combining with foreign advanced
design idea. This plate is a large area ceramic vacuum filter plate of low energy consumption and
environmentally, which is suitable for 144m2
, 204m2
and 240m2
ceramic vacuum filters. The 8m2
plate still
follows the new technology of our company, fully meet the use demand of large area ceramic filters, and ensure
the normal operation of equipments. The launch of the 8m2
ceramic filter plate (12m2
each circle) provides the
possibility and guarantee for manufacturing ceramic vacuum filters in China. At present, this 8m2
plate has
been widely used and recognized in Chile, Australia, Canada and other countries and regions. Now our
company is manufacturing 240m2
filtering equipment through cooperating with Longhai company, to meet the
market demand.
- 5 -
9. Properties of ceramic plates:
1. Higher density of framework and strength of membranous layer with good resistance against pressure and corrosion.
2. higher percentage of open area and bigger production capacity with higher filtration precision and lower vacuum
energy consumption .Refined materials are integrated together as a whole without using adhesive.
3. Numerous generative methods are available like cleaning at hi-temperature or hi-pressure or in organic solvent,
with good recycling effect and much prolonged serice life.
Technical Data of Ceramic Plates
Filter flux (water pressure 0.1Mpa) 1200-1800 kg/h.m2
Recoil atmospheric pressure (in damp environment) ≥0.6Mpa
Back wash pressure ≤0.3Mpa
Assembly Precision
Parallelism between assemble ring's base level and
membrane's surface
±0.15mm
Height between assemble ring's base level and
membrane's surface
8mm±0.1mm
Precision of forming a
disc
Tolerance between midpoint of assemble hole and
diagonal line
≤3mm
Space between each plates which forming a circle
arc (installation as required)
5mm±2mm
Combined cleaning pressure of ultrasonic and chemical agent ≤0.2Mpa
Pore diameter range of membrane surface 1.0μm-15μm
Accumulatedtimeofwearresistancetomembranesurfacewhenfiltercakeis
discharged.( Not chafed by hard material or scraper)
≥10000h
Dry weight of processed materials 0.6-1.6t /h·m2
- 7 -
Features and Technical Date about RX Series of Ceramic Plates
10. - 8 -
1.Ceramic plates
2.Distributor,fric-
tion ring
3.Ceramic scraper
4.Filter cake
5.Slurry tank
6.Vacuum barrel
7.Ultrasonic
cleaning
8.Conveyor belt
Working Principle and Application Diagram
Firstly the ceramic screen plates which are dipped in the slurry will form a thick layer filter cake on the surface
of plates under vacuum pressure. The filtrate will go through the plates and then enter into distributing valve, finally
arrive in the vacuum barrel. In the dry district, the filter cake will be dehydrated under high vacuum function to
make it further dry. After that, the ceramic plates come into discharging district, the filter cake will be discharged by
the scraper and be delivered to the required place through conveyor belt.
Finally ceramic plates enter into back- cleaning district. The filter liquid will go into the ceramic plates through
distributing valve in order to clean the jam left on the micro-holes. Thus a cycle of filter operation is finished. After a
long period of application, it can be combined cleaned by ultrasonic and chemical cleaning agent to keep the ceram-
ic filter working with high efficiency.
Dry District
Cleaning District
Discharging District
Back-cleaning District
Chemical Cleaning Pipe
Slurry-sucking District
12. - 10 -
Specifications and Dimensions about RX series of ceramic plates
L2
C
Note: L1=Bottom width of sector plate Unit:mm
L2=Space between two installation holes'center
L3=Top width of sector plate
B=Total height of sector plate
C=Thickness of sector plate
Specification Exterior dimension
2m2
/12
3m2
/12
4m2
/12
L1=225
L2=165
L3=380
B=320
C=25
L1=295
L2=239
L3=485
B=395
C=25-30
L1=338
L2=276
L3=555
B=441
C=30
5m2
/12
6m2
/12
12m2
/15
L1=300
L2=240
L3=568
B=550
C=35
L1=294
L2=235
L3=603
B=619
C=32
L2=430
L3=777.3
B=822
C=36
Moreover we can provide products in all kinds of models
and dimensions as user's demands.
13. - 11 -
Specifications and Dimensions about RX series of Ceramic Scraper
Series of Ceramic Friction Ring
Note: (Unit:mm)
L1=Total length of the scraper
L2=Top length of tool post
L3=Bottom length of tool post
B=Scraper width
C=Thickness of the scraper
D=Distance between locating holes
E=Diameter of the locating hole
F=Distance between locating hole to the bottom of tool post
specifica-
tion
255
325
345
375
634
255 244 215 72 11 140 12 24
325 310 287 72 12 120 12.5 19
345 331 288 72 11 130 13 20
375 360 330 72 12 130 12.5 20
634 634 634 101 11 136 15 18
Exterior dimension
L1 L2 L3 B1 C D E F
