CN101982218B - Vertical leaf filter filtering device and filter method and application thereof - Google Patents
Vertical leaf filter filtering device and filter method and application thereof Download PDFInfo
- Publication number
- CN101982218B CN101982218B CN201010524745A CN201010524745A CN101982218B CN 101982218 B CN101982218 B CN 101982218B CN 201010524745 A CN201010524745 A CN 201010524745A CN 201010524745 A CN201010524745 A CN 201010524745A CN 101982218 B CN101982218 B CN 101982218B
- Authority
- CN
- China
- Prior art keywords
- filter
- seminal fluid
- filter cloth
- valve
- cloth
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Landscapes
- Filtering Materials (AREA)
Abstract
The invention relates to a vertical leaf filter filtering device and a filter method and application thereof. The filtering device comprises a filter shell, a filter plate, a head tank, a raw liquor tank, a filter cake tank, a fine liquor tank and a pressure pump, wherein raw liquor is filtered by the filter plate of the filter to obtain fine liquor which enters the head tank via a collector tube; the filter plate comprises a bar-shaped bracket and stainless steel filament filter cloth, wherein the bar-shaped bracket is installed between two layers of filter cloth and is provided with filter tanks which alternately arranged convexly and concavely; the collector tube is provided with a horizontal groove; the bar-shaped bracket is communicated with the collector tube by the horizontal groove; and the filter cloth is covered on the collector tube. The filter method is in periodic operation and is divided into the following steps: the step of feeding and hanging mud: lasting for 4-7 min; sodium aluminate raw liquor enters the leaf filter from the raw liquor tank and forms a filter layer on the filter plate by filter pressing; turbid liquid penetrating through the filter layer returns to the raw liquor tank by a reflux valve; the normal filter step: filtrate penetrating through the filter layer is fine liquor, and the fine liquor enters the head tank; and the final step of removing cakes under decompression and recovery. The invention uses stainless steel filament filter cloth to replace polypropylene monofilament cloth, so that the service life of the filter cloth is greatly prolonged; meanwhile, the stainless steel filament filter cloth can be washed easily by alkali with short time; the number of the filter cloth can be 1600-1800 meshes, and the filter cloth has the advantages of high temperature resistance, no deformation, no contraction, long service life and the like. The filter method shortens period, obviously improves yield and has good economic benefit.
Description
Technical field
The present invention relates to a kind of filter plant, particularly relate to the methods and applications of a kind of vertical leaf filter and aluminum filtration acid sodium solution thereof.
Background technology
In aluminum oxide production process, the aluminium oxide in the ore is via obtaining dissolution fluid after ore grinding, the stripping, and dissolution fluid is after dilution; Through sedimentation separation, obtain thick liquid, thick liquid filters through filter; Remove after the suspensions such as red mud particulate wherein, obtain qualified seminal fluid and get into follow-up workshop section.Filter the vertical leaf that the capital equipment of thick liquid has traditional Kai Lishi leaf filter and began in recent years to use.
Vertical leaf is longer filter cycle at present, and operating efficiency is lower, and the filter cloth of use is polypropylene filament cloth, and there is significant disadvantages in this filter cloth; Be exactly at high temperature yielding, the later stage production capacity is lower, and the cycle of changing filter cloth is short; Defectives such as it is longer to change the filter cloth time, and labour intensity is big, and production efficiency is lower; Leaf filter often needs often to shut down, and effective running rate of equipment is lower, causes production cost high.
The method of present leaf filter aluminum filtration acid sodium solution, the production cycle is longer, and production capacity is low, and production efficiency is low, can not meet the needs of production.
Summary of the invention
The technical problem that the present invention will solve: overcome the defective in the background technology, provide that a kind of high production capacity, cost are low, the vertical leaf filter of long service life, the method for the aluminum filtration acid sodium solution that a kind of cycle is short, efficient is high also is provided.
Technical scheme of the present invention:
A kind of vertical leaf filter comprises leaf filter housing, filter plate, head tank, thick liquid bath, filter cake groove, seminal fluid groove and compression pump, and the thick liquid of said thick liquid bath obtains seminal fluid after the leaf filter filter plate filters; Get into head tank through collector tube; Said filter plate comprises bar shaped support and filter cloth, and the bar shaped support is installed between the two-layer filter cloth, and the bar shaped support is provided with the alternate filter pocket of convex-concave; Have transverse groove on the collector tube; The bar shaped support is communicated with through transverse groove and collector tube, and filter cloth is wrapped on the collector tube, and said filter cloth is the stainless steel wire filter cloth; The stainless steel wire diameter of said stainless steel wire filter cloth is 0.08-0.1mm, and filter cloth order number is the 1600-1800 order.
Said filter cloth is satin weave or twill weave.
Said filter also comprises operated pneumatic valve and control system, and said operated pneumatic valve comprises inlet valve, mud valve, return valve, seminal fluid inlet valve and seminal fluid bleeder valve.
A kind of method of utilizing vertical leaf filter aluminum filtration acid sodium solution, this method is a periodical operation, each cycle is 45-50min, filters and divides three phases to carry out:
In first stage, the mud stage is hung in charging, and the time is 4-7min; Inlet valve, return valve are opened, and seminal fluid inlet valve, mud valve are closed, and crude liquor of sodium aluminate is sent into leaf filter from thick liquid bath, on filter plate, form filter course through press filtration, and the filtrating that sees through filter course is turbid solution, and turbid solution returns thick liquid bath through return valve;
Second stage, in the normal filtration stage, the time is 40-45min; This stage turbid solution becomes clear, and return valve cuts out, and the seminal fluid inlet valve is opened, and the filtrating that sees through filtering layer is seminal fluid, and seminal fluid gets into head tank; Seminal fluid in the head tank is emitted through the seminal fluid bleeder valve, and is subsequent use;
Phase III, unload cake decompression and recovery stage, the time is 1-3min; Inlet valve and return valve are closed, and stop charging, and mud valve is opened, and the seminal fluid inlet valve is opened, and pressure-relief valve is opened, and with the filter cake on each filter plate of the seminal fluid of head tank recoil, filter cake breaks away from filter cloth and gets into the filter cake groove, with filter cake with filter cake pumping red-mud settlement separating, washing operation; After accomplishing, cake gets into the next round circulation when unloading.
The pressure in said normal filtration stage is 0.2-0.5MPa.
In filtering the said crude liquor of sodium aluminate of forward direction, add filter aid, filter aid is that milk of lime mixes by the volume ratio of 1:2-3 with seminal fluid, and is under 50-80 ℃, obtains behind the stirring 2-4h in temperature, and the addition of filter aid is 10 ~ 20% of a crude liquor of sodium aluminate volume.
The application of described vertical leaf filter in alumina producing.
Output when the vertical leaf filter cloth uses first is higher; But because the sodium aluminate solution that filters is a saturated solution; When opening filter and unload filter cake, the temperature of filter cloth reduces, and the solution that is adhered on the filter cloth becomes unsettled supersaturated sodium aluminate solution very soon; Cause aluminium hydroxide on filter cloth, to separate out (it is hard to be commonly called as the filter cloth knot), influenced the strainability of filter cloth.
Positive beneficial effect of the present invention:
(1) leaf filter filter of the present invention and common leaf filter compare, and advantage is obvious.
Common leaf filter adopts polypropylene filament cloth as filter cloth, polypropylene filament cloth non-refractory, yielding, the easy contraction, and at high temperature yielding, aging fast, be about 60 days average life; And advantage such as that the stainless steel wire filter cloth has is high temperature resistant, indeformable, do not shrink, substitute polypropylene filament cloth with the stainless steel wire filter cloth after, the average out to 2-3 in service life of filter cloth, prolong service life greatly.
In addition, supersaturated sodium aluminate solution is not easy to adhere on the stainless steel wire filter cloth, and the process that the filter cloth knot is hard is obviously slack-off, even supersaturated sodium aluminate solution is after the stainless steel wire filter cloth adheres to, alkali cleaning is got up also than being easier to alkali cleaning time weak point.Original polypropylene filament filter cloth on average uses just needed alkali cleaning once in 3-7 days, and the production capacity decrease speed is fast, and the alkali cleaning temperature need carried out below 100 ℃, and temperature is high again, and polypropylene fibre is out of shape, and washing once needs about 8h; On average use alkali cleaning in 10-15 days once with the stainless steel wire filter cloth, between 120-150 ℃, the alkali cleaning temperature is higher usually for the alkali cleaning temperature; Be easy to washing; Wash time is merely 30-60 minute, and the production capacity decrease speed is slow, has improved the effective filtration time and the production capacity of equipment.
(2) the present invention is through setting the stainless steel wire diameter and the filter cloth order number of stainless steel wire filter cloth; Stainless steel wire is thinner; The stainless steel wire filter cloth filter cloth order number can reach the 1600-1800 order; And polypropylene filament cloth is thicker, and the filter cloth order number of filter cloth is merely the 300-500 order, and the present invention has effectively improved the filtration yield and the production capacity of unit are filter cloth.Practice shows that after use stainless steel wire filter cloth substituted original polypropylene filament filter cloth, production capacity obviously improved, and production capacity is from 1.5 original ~ 1.7m
3/ h.m
2Bring up to 2.0 present ~ 2.5m
3/ h.m
2, production capacity has improved 30-50%, and economic benefit obviously improves.
The productivity ratio of leaf filter of the present invention and common vertical leaf sees the following form 1 under the similarity condition.
| The filter type | Filter area, m 2 | Produce seminal fluid, m 2/h | Yield per unit area, m 3/h.m 2 |
| Common vertical filter | 226 | 340-385 | 1.5~1.7 |
| Vertical filter of the present invention | 226 | 450-560 | 2.0-2.5 |
(3) filter method advantage of the present invention is obvious, and compares with class methods, and the cycle shortens, and produces continuously, and effective filtration time of equipment is long, the production capacity height, and overall economic efficiency is obvious.Through measuring and calculating, filter method of the present invention can make manufacturing cost of aluminum oxide reduce 10-20%, and economic benefit is obvious, is worthy of popularization very much.
Description of drawings:
Fig. 1: vertical leaf filter sketch map;
Fig. 2: filter-plate structure sketch map;
Fig. 3: bar shaped support cross-sectional view.
Among the figure, 1 is the vertical leaf housing, and 2 is filter plate, and 3 is head tank, and 4 is thick liquid bath; 5 is the filter cake groove, and 6 is the seminal fluid groove, and 7 is inlet valve, and 8 is mud valve; 9 is return valve, and 10 is the seminal fluid inlet valve, and 11 is the seminal fluid bleeder valve, and 12 is compression pump; 13 is the stainless steel wire filter cloth, and 14 are the bar shaped support, and 15 is collector tube, and 16 is filter pocket.
The specific embodiment:
Embodiment 1: a kind of vertical leaf filter; Comprise vertical leaf housing (pressure vessel) 1, filter plate 2, head tank 3, thick liquid bath 4, filter cake groove 5, seminal fluid groove 6 and compression pump 12 compositions; Filter plate 2 is by bar shaped support 14 and stainless steel wire filter cloth 13 be combined intos; Bar shaped support 14 is installed between the two-layer filter cloth, on bar shaped support 14, is provided with the alternate filter pocket of vertical convex-concave 16, has transverse groove on the collector tube 15; Bar shaped support 14 is communicated with through transverse groove and collector tube 15, and stainless steel wire filter cloth 13 is wrapped on the collector tube 15.
Other is provided with operated pneumatic valve and control system, and through the automatic control of control system realization valve, operated pneumatic valve comprises inlet valve 7, mud valve 8, return valve 9, seminal fluid inlet valve 10 and seminal fluid bleeder valve 11.
Wherein stainless steel wire filter cloth specification is: area is 226 m
2, stainless steel wire diameter 0.08-0.1mm, filter cloth order number is the 1600-1800 order, filter cloth is for forging the line braiding.
Adopt above-mentioned vertical leaf filter to filter the method for aluminum filtration acid sodium solution:
To the crude liquor of sodium aluminate that comes from red mud separating, washing workshop section, add filter aid earlier, addition is 10 ~ 20% of a crude liquor of sodium aluminate volume; Filter through vertical leaf then, filter the seminal fluid that obtains and send seminal fluid cooling workshop section, filter cake send red-mud settlement separating, washing workshop section.Wherein filter aid be with milk of lime with after seminal fluid mixes by the volume ratio of 1:2-3, in temperature be under 50-80 ℃, obtain after stirring 2-4h, contain active component 3CaOAl in the filter aid
2O
36H
2O, this active component helps improving filter efficiency.
Concrete grammar is a periodical operation, and about 45min of each cycle divides three phases.
In first stage, the mud stage is hung in charging, and the time is 4min; Inlet valve 7, return valve 9 are opened; Seminal fluid inlet valve 10, mud valve 8 are closed, and crude liquor of sodium aluminate is delivered to leaf filter from thick liquid bath 4, and filter aid forms filter course during this on filter plate 2; The filtrating that sees through filter course is turbid solution, and turbid solution returns thick liquid bath 6 through return valve 9;
Second stage, in the normal filtration stage, the time is 40min; This stage turbid solution becomes clear, and return valve 9 cuts out, and seminal fluid inlet valve 10 is opened, and the filtrating that sees through filter plate 2 is seminal fluid, and seminal fluid is introduced into collector tube 15 along filter pocket 16 under pressure, gets into head tank 3 by the seminal fluid discharge pipe again; Seminal fluid in the head tank 3 is emitted through seminal fluid bleeder valve 11, and is subsequent use; Pressure during filtration is 0.2-0.3MPa.
Phase III, decompression is unloaded cake and recovery stage, and the time is 1min; Inlet valve 7 cuts out with return valve 9, stops charging, and mud valve 8 is opened; Seminal fluid inlet valve 10 is opened, and pressure-relief valve is opened, with the filter cake on each filter plate of seminal fluid recoil of head tank; Filter cake breaks away from filter cloth and gets into filter cake groove 5, with filter cake with filter cake pumping red-mud settlement separating, washing operation; After accomplishing, cake gets into new round circulation when unloading.
Process when leaf filter alkali cleaning and washing is following: the alkali lye that temperature is about 120-150 ℃ gets into leaf filter inside from the awl end, and begins dozen circulation.In the alkali cleaning cyclic process, alkali lye flows out from head tank, gets into lye tank (vat), and gets into from the leaf filter awl end again through pump, so moves in circles.After the alkali cleaning circulation finishes, remain in the inner alkali lye of leaf filter and discharge from the awl end, return lye tank (vat).Wash after the alkali cleaning, wash temperature is about 100 ℃ again, and wash water gets into from the leaf filter charging aperture, is discharged to the filter cake groove from the awl end.
Because the present invention adopts the stainless steel wire filter cloth, on average use alkali cleaning in 10-15 days once, wash time is merely 30-60 minute, all significantly reduces than the alkali wash period and the alkali cleaning time of adopting the polypropylene filament filter cloth.
With said method crude liquor of sodium aluminate is filtered, the filtrate component before and after filtering sees the following form 2, and unit is g/1.Can find out that floating material reduces greatly in the thick liquid in filtration back, filter effect is better.
The sodium oxide molybdena in wherein full alkali (NT) the expression sodium aluminate solution and the concentration of sodium carbonate.
Embodiment 2: basic identical with embodiment 1, difference is:
Vertical leaf filter filter cloth is the stainless steel wire filter cloth, and the stainless steel wire diameter is 0.1mm in the filter cloth, and filter cloth order number is 1600 orders, and filter cloth is twill weave.
The method of aluminum filtration acid sodium solution, be 50min filter cycle.In first stage, the mud stage is hung in charging, and the time is 6min; Second stage, in the normal filtration stage, the time is 42min, pressure is 0.3-0.4Mpa during filtration; Phase III, decompression is unloaded cake and recovery stage, and the time is 2min.
Embodiment 3: basic identical with embodiment 1, difference is:
Vertical leaf filter filter cloth is the stainless steel wire filter cloth, and the stainless steel wire diameter is 0.08mm in the filter cloth, and filter cloth order number is 1800 orders, and filter cloth is for forging the line braiding.
The method of aluminum filtration acid sodium solution, be 46min filter cycle, and in first stage, the mud stage is hung in charging, and the time is 5min; Second stage, in the normal filtration stage, the time is 40min, pressure is 0.4-0.5MPa during filtration; Phase III, decompression is unloaded cake and recovery stage, and the time is 1min.
Embodiment 4: basic identical with embodiment 1, difference is:
Vertical leaf filter filter cloth is the stainless steel wire filter cloth, and the stainless steel wire diameter of filter cloth is 0.09mm, and filter cloth order number is 1700 orders, and filter cloth is twill weave.
Claims (5)
1. method of utilizing vertical leaf filter aluminum filtration acid sodium solution, it is characterized in that: this method is a periodical operation, each cycle is 45-50min, filters and divides a three phases to carry out:
In first stage, the mud stage is hung in charging, and the time is 4-7min; Inlet valve, return valve are opened, and seminal fluid inlet valve, mud valve are closed, and crude liquor of sodium aluminate is sent into leaf filter from thick liquid bath, on filter plate, form filter course through press filtration, and the filtrating that sees through filter course is turbid solution, and turbid solution returns thick liquid bath through return valve;
Second stage, in the normal filtration stage, the time is 40-45min; This stage turbid solution becomes clear, and return valve cuts out, and the seminal fluid inlet valve is opened, and the filtrating that sees through filtering layer is seminal fluid, and seminal fluid gets into head tank; Seminal fluid in the head tank is emitted through the seminal fluid bleeder valve, and is subsequent use;
Phase III, unload cake decompression and recovery stage, the time is 1-3min; Inlet valve and return valve are closed, and stop charging, and mud valve is opened, and the seminal fluid inlet valve is opened, and pressure-relief valve is opened, and with the filter cake on each filter plate of the seminal fluid of head tank recoil, filter cake breaks away from filter cloth and gets into the filter cake groove, with filter cake with filter cake pumping red-mud settlement separating, washing operation; After accomplishing, cake gets into the next round circulation when unloading;
Add filter aid in the said crude liquor of sodium aluminate of filtration forward direction, said filter aid is that milk of lime mixes by the volume ratio of 1:2-3 with seminal fluid, and is under 50-80 ℃, obtains behind the stirring 2-4h in temperature, and the addition of filter aid is 10 ~ 20% of a crude liquor of sodium aluminate volume;
Described vertical leaf filter comprises leaf filter housing, filter plate, head tank, thick liquid bath, filter cake groove, seminal fluid groove and compression pump, and the thick liquid of said thick liquid bath obtains seminal fluid after the leaf filter filter plate filters; Get into head tank through collector tube; Said filter plate comprises bar shaped support and filter cloth, and the bar shaped support is installed between the two-layer filter cloth, and the bar shaped support is provided with the alternate filter pocket of convex-concave; Have transverse groove on the collector tube; The bar shaped support is communicated with through transverse groove and collector tube, and filter cloth is wrapped on the collector tube, and said filter cloth is the stainless steel wire filter cloth; The stainless steel wire diameter of said stainless steel wire filter cloth is 0.08-0.1mm, and filter cloth order number is the 1600-1800 order.
2. method according to claim 1 is characterized in that: the pressure in said normal filtration stage is 0.2-0.5MPa.
3. method according to claim 1 is characterized in that: said filter cloth is satin weave or twill weave.
4. method according to claim 1 is characterized in that: said filter also comprises operated pneumatic valve and control system, and said operated pneumatic valve comprises inlet valve, mud valve, return valve, seminal fluid inlet valve and seminal fluid bleeder valve.
5. the application of vertical leaf filter in alumina producing in the said method of claim 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010524745A CN101982218B (en) | 2010-10-29 | 2010-10-29 | Vertical leaf filter filtering device and filter method and application thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010524745A CN101982218B (en) | 2010-10-29 | 2010-10-29 | Vertical leaf filter filtering device and filter method and application thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101982218A CN101982218A (en) | 2011-03-02 |
| CN101982218B true CN101982218B (en) | 2012-09-05 |
Family
ID=43619140
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201010524745A Expired - Fee Related CN101982218B (en) | 2010-10-29 | 2010-10-29 | Vertical leaf filter filtering device and filter method and application thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101982218B (en) |
Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103011212B (en) * | 2011-09-26 | 2015-06-03 | 沈阳铝镁设计研究院有限公司 | Method for adding vertical type leaf filter filtration aid |
| CN103100259B (en) * | 2011-11-14 | 2015-09-30 | 沈阳铝镁设计研究院有限公司 | A kind of filter aid that do not add carries out the refining method of thick liquid |
| CN104225990A (en) * | 2014-09-05 | 2014-12-24 | 洛阳宝诺重型机械有限公司 | Filtration unit device of vertical leaf filter |
| CN104226006A (en) * | 2014-09-25 | 2014-12-24 | 洛阳宝诺重型机械有限公司 | Collecting fluid through-flow device of vertical leaf filter |
| CN104386725B (en) * | 2014-10-10 | 2017-11-07 | 洛阳中超新材料股份有限公司 | A kind of method that high white superfine aluminium hydroxide is prepared with Bayer process aluminium hydroxide |
| CN105905930B (en) * | 2016-04-12 | 2017-10-20 | 广西华银铝业有限公司 | Sodium aluminate solution refines filter aid and prepared and filter cake Application way in alumina producing |
| CN107774045A (en) * | 2016-08-24 | 2018-03-09 | 沈阳铝镁设计研究院有限公司 | A kind of adding method and device of fine filtration of sodium aluminate solution filter aid |
| CN110182836A (en) * | 2019-05-28 | 2019-08-30 | 中国铝业股份有限公司 | A kind of method that bauxite prepares PAC calcium aluminate powder |
| CN110404307A (en) * | 2019-08-29 | 2019-11-05 | 威孔过滤科技（苏州）有限公司 | Board-like filter plate and its application is concentrated in precision |
| CN114307309A (en) * | 2021-12-21 | 2022-04-12 | 西安航天华威化工生物工程有限公司 | Airtight purification filter pressing device |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4446352A (en) * | 1980-08-11 | 1984-05-01 | United States Filter Fluid Systems Corp. | Filter leaf |
| US4805525A (en) * | 1987-05-29 | 1989-02-21 | Bivens Thomas H | Apparatus for filtering liquids |
| CN201187645Y (en) * | 2008-04-25 | 2009-01-28 | 河南未来铝业（集团）有限公司 | Liquid-collecting pipe seal ring of leaf filter |
| CN201195070Y (en) * | 2008-04-25 | 2009-02-18 | 河南未来铝业（集团）有限公司 | Novel leaf filter overhead tank |
| CN201200834Y (en) * | 2008-05-08 | 2009-03-04 | 洛阳市豫瑞机械制造有限公司 | Jagged single filter sheet of drum-type filter press |
| CN201529433U (en) * | 2009-10-30 | 2010-07-21 | 谢晓平 | Fluid filter plate |
| CN201871269U (en) * | 2010-10-29 | 2011-06-22 | 温县中原科技有限公司 | Filtering device of vertical leaf filter |
-
2010
- 2010-10-29 CN CN201010524745A patent/CN101982218B/en not_active Expired - Fee Related
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4446352A (en) * | 1980-08-11 | 1984-05-01 | United States Filter Fluid Systems Corp. | Filter leaf |
| US4805525A (en) * | 1987-05-29 | 1989-02-21 | Bivens Thomas H | Apparatus for filtering liquids |
| CN201187645Y (en) * | 2008-04-25 | 2009-01-28 | 河南未来铝业（集团）有限公司 | Liquid-collecting pipe seal ring of leaf filter |
| CN201195070Y (en) * | 2008-04-25 | 2009-02-18 | 河南未来铝业（集团）有限公司 | Novel leaf filter overhead tank |
| CN201200834Y (en) * | 2008-05-08 | 2009-03-04 | 洛阳市豫瑞机械制造有限公司 | Jagged single filter sheet of drum-type filter press |
| CN201529433U (en) * | 2009-10-30 | 2010-07-21 | 谢晓平 | Fluid filter plate |
| CN201871269U (en) * | 2010-10-29 | 2011-06-22 | 温县中原科技有限公司 | Filtering device of vertical leaf filter |
Non-Patent Citations (2)
| Title |
|---|
| 李元杰.氧化铝工业液固分离用的过滤介质.《轻金属》.1986,(第01期), * |
| 瞿向东等.全自动高效立式叶滤机在铝酸钠溶液过滤中的应用.《轻金属》.2003,(第12期), * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101982218A (en) | 2011-03-02 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101982218B (en) | Vertical leaf filter filtering device and filter method and application thereof | |
| CN100460326C (en) | Method of refining salt by membrane filtration | |
| CN106350614B (en) | Comprehensive recycling method for preparing ion exchange water and acid and alkali from maltose syrup | |
| CN103922500B (en) | Zero discharge processor for electronickelling rinsing waste water and processing method thereof | |
| CN103041705A (en) | Device and method for coupling catalyst recovery process with dynamic disc membrane separation process | |
| CN104358176B (en) | A kind of mthod of white water from paper making recovery system | |
| CN110975404B (en) | Pretreatment method and system for separation of filtrate components in polyphenylene sulfide production | |
| CN101234771A (en) | Mother liquid evaporation desalting technique in aluminum oxide production | |
| FI123885B (en) | Pressure filter and method in connection therewith | |
| CN202185197U (en) | Filter used for refined wet process phosphoric acid | |
| CN201871269U (en) | Filtering device of vertical leaf filter | |
| CN216677249U (en) | Candle type filter cloth regenerating device | |
| CN105056622A (en) | Fractional precipitation type rolling oil filter device | |
| CN212187939U (en) | Large-flow filter | |
| CN105237391B (en) | A kind of method for further improving CTA exchange of solvent efficiency | |
| US5034127A (en) | Filter assembly for purifying brine | |
| CN203960383U (en) | A kind of cold rolled strip electroplate liquid filtering system | |
| CN208193873U (en) | Water circulation utilization system for the processing of damaged tire ultra-high pressure water fluid jet | |
| CN206721561U (en) | It is a kind of to improve the system for removing paper pulp impurity efficiency | |
| CN208799970U (en) | A kind of monoammonium phosphate purification processes device | |
| CN203090569U (en) | Waste acid purification and recovery system | |
| CN1539745A (en) | Filterpressing, washing, cleansing processes for manufacturing hydration titania | |
| CN101874949A (en) | Back-washing regeneration method of ceramic membrane method brine refining process filter | |
| CN214634304U (en) | Salt discharging system for aluminum oxide production | |
| CN211411646U (en) | Inorganic membrane filter |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120905 Termination date: 20131029 |