CN102333895A - Filter bag for bayer liquor filtration - Google Patents
Filter bag for bayer liquor filtration Download PDFInfo
- Publication number
- CN102333895A CN102333895A CN2010800077060A CN201080007706A CN102333895A CN 102333895 A CN102333895 A CN 102333895A CN 2010800077060 A CN2010800077060 A CN 2010800077060A CN 201080007706 A CN201080007706 A CN 201080007706A CN 102333895 A CN102333895 A CN 102333895A
- Authority
- CN
- China
- Prior art keywords
- filter bag
- filter
- junctor
- sleeve
- opening end
- 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.)
- Granted
Links
- 238000001914 filtration Methods 0.000 title claims abstract description 20
- 239000000463 material Substances 0.000 claims abstract description 42
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims abstract description 15
- 239000007788 liquid Substances 0.000 claims description 23
- 239000002245 particle Substances 0.000 claims description 17
- 238000000034 method Methods 0.000 claims description 13
- 239000000835 fiber Substances 0.000 claims description 11
- KAKZBPTYRLMSJV-UHFFFAOYSA-N Butadiene Chemical compound C=CC=C KAKZBPTYRLMSJV-UHFFFAOYSA-N 0.000 claims description 10
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N iron oxide Inorganic materials [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 claims description 10
- NDLPOXTZKUMGOV-UHFFFAOYSA-N oxo(oxoferriooxy)iron hydrate Chemical compound O.O=[Fe]O[Fe]=O NDLPOXTZKUMGOV-UHFFFAOYSA-N 0.000 claims description 10
- 229920002943 EPDM rubber Polymers 0.000 claims description 7
- 229920013649 Paracril Polymers 0.000 claims description 7
- 239000004743 Polypropylene Substances 0.000 claims description 6
- -1 polypropylene Polymers 0.000 claims description 6
- 229920001155 polypropylene Polymers 0.000 claims description 6
- NLHHRLWOUZZQLW-UHFFFAOYSA-N Acrylonitrile Chemical compound C=CC#N NLHHRLWOUZZQLW-UHFFFAOYSA-N 0.000 claims description 5
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 claims description 5
- 150000001993 dienes Chemical class 0.000 claims description 5
- QQONPFPTGQHPMA-UHFFFAOYSA-N propylene Natural products CC=C QQONPFPTGQHPMA-UHFFFAOYSA-N 0.000 claims description 5
- 125000004805 propylene group Chemical group [H]C([H])([H])C([H])([*:1])C([H])([H])[*:2] 0.000 claims description 5
- 238000003466 welding Methods 0.000 claims description 5
- 238000004891 communication Methods 0.000 claims description 3
- 239000012530 fluid Substances 0.000 claims description 3
- 238000012545 processing Methods 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 abstract 1
- 229920001971 elastomer Polymers 0.000 description 7
- 239000002002 slurry Substances 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 4
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 4
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
- 239000000843 powder Substances 0.000 description 3
- 238000009958 sewing Methods 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 239000004411 aluminium Substances 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 229910001570 bauxite Inorganic materials 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 238000004131 Bayer process Methods 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 229920000459 Nitrile rubber Polymers 0.000 description 1
- ORILYTVJVMAKLC-UHFFFAOYSA-N adamantane Chemical compound C1C(C2)CC3CC1CC2C3 ORILYTVJVMAKLC-UHFFFAOYSA-N 0.000 description 1
- 229910001573 adamantine Inorganic materials 0.000 description 1
- 230000003321 amplification Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000003518 caustics Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000002425 crystallisation Methods 0.000 description 1
- 230000008025 crystallization Effects 0.000 description 1
- 239000000806 elastomer Substances 0.000 description 1
- 238000005189 flocculation Methods 0.000 description 1
- 230000016615 flocculation Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000008595 infiltration Effects 0.000 description 1
- 238000001764 infiltration Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 239000013055 pulp slurry Substances 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
- B01D29/39—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with hollow discs side by side on, or around, one or more tubes, e.g. of the leaf type
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Filtering Materials (AREA)
- Filtration Of Liquid (AREA)
Abstract
A filter bag for Bayer liquor filtration in an alumina production process, the filter bag comprising a filter sleeve being tubular with an open end and a closed end opposite the open end, and a connector being tubular, made of an anti-scaling material, and affixed to the open end of the filter sleeve.
Description
Technical field
The present invention relates to be used for particle from the isolating filter bag of pulp slurry; Ferric oxide particles in said particle such as the Bayer-liquid that is present in process for making alumina (Bayer liquor), and more specifically, relate to a kind of filter bag; This filter bag has the antiscale junctor, so that the replacing of said filter bag.
Background technology
Aluminium is in the pond of the fused salt that comprises aluminum oxide, to produce through electrolytic process.In this technology, must supply with fresh alumina powder for this pond continuously.In order to produce 1 ton of aluminium, use about 2 tons of alumina powders.Nearly all in the world alumina powder all is to use the process for making alumina that is called Bayer technology (Bayer process) to obtain.Bayer technology is used the aluminum oxide rich ore that is called bauxite.Usually, first step is to grind said bauxite, then it is mixed with heat and dense sodium hydroxide solution.The slurries that generated are continued the heating several minutes under pressure, be cooled to about 100-106 ℃ afterwards.Then, said hot soln is mixed with flocculation agent (flocculent), and is injected into decanting vessel (decanter), most of undissolved solids precipitation in said decanting vessel.Because it is a continuous processing, in said decanting vessel at, comprise the red filter mud of particulate and be discharged from, the clear solution that comprises aluminum oxide simultaneously and be known as Bayer-liquid in this article overflows at the place, top.Yet the saturated Bayer-liquid of transparent white lake still comprises the ferric oxide particles to be removed less than 1%.
A kind of completion in different types of available filter used in the last filtration that removes the small-particle red stone usually; For example level or vertically leaf filter; Perhaps channel-type strainer is for example by the Diastart radenamed filter for installation of Filters Gaudfrin (France) research and development.Because the throughput rate of these strainers of back makes them become more and more welcome.Above-mentioned strainer uses the filter bag of being processed by polypropylene fibre or tynex usually.The annual fiber that uses of typical aluminum oxide factory is greater than 100,000 square metres.
Fig. 1 has schematically shown a kind of typical channel-type filter apparatus.Bayer-liquid is filled big cylindrical tank 10.Manifold with a plurality of radial oriented outlet pipes 12 is set at the epimere of cylindrical tank.A plurality of filter bag 14a, 14b are suspended on the outlet pipe 12.Outlet pipe 12 is connected to primary outlet 16, and at this primary outlet place, filtering Bayer-liquid will be removed.This application is provided with multiple size and configuration.For the purpose of explaining, in the equipment of schematic representation, filter bag 14a, 14b can have the length of several meters (common more than 10 feet) and can have the width of 61cm (24 inches).When said filter bag stood the pressure difference between the outside elevated pressures of lower pressure and the sleeve of sleeve inner, the metal framework structure that is inserted in the channel interior of said filter bag prevented that said filter bag from breaking.
Changing filter bag accomplishes with 45-60 days frequency usually.In order to remove said bag, first step is to remove white lake and oxidation iron phase blended layer, and this paper is called dirt (scale), said dirt crystallization in surface that said solution contacts on.Said dirt can reach several centimetres of thickness in several days.Said dirt can be very hard, so that remove high-pressure spray or the hydraulic hammer that it need use caustic solution.Therefore, it is a material circumstance that filter bag is changed, and even causes the workman to come to harm.For the strainer that is made up of many passages, like Diastar, this problem is especially serious, because connection portion fouling seriously.
For this reason,, filtration has improved space in containing the replacing method of employed filter bag of dirty slurries and said filter bag.
Summary of the invention
A solution provides a kind of filter bag, and this filter bag has the antiscale junctor at its opening end.The junctor that has been found that paracril (Nitrile rubber) or EPDM rubber is useful for this purpose.Be not all rubber all be suitable, some low density rubber are easy to occur scale formation.Paracril or EPDM rubber have high relatively density.The existence of carbon is useful in the rubber.Fluorinated elastomer possibly be unpractical, and this is because their cost is relatively very high.Preferably, considering influences minimized mode with a kind of junctor that makes to the filtering feature of filter bag by practical factor, is chosen to be the length (or width) of antiscale junctor as far as possible little with respect to the length of filter bag.When having arrived the time of replacing filter bag, it is very easy removing.
According on the one hand, a kind of filter bag is provided, it has: filter sleeve, this filter sleeve has opening end; And, junctor, it is processed by the antiscale material, is fixed to the opening end of said filter sleeve.
According on the other hand, a kind of filtering filter bag of Bayer-liquid that in process for making alumina, is used for is provided, said filter bag comprises: filter sleeve, it is a piped, has opening end and the closing end relative with said opening end; And junctor is processed by the antiscale material, and is fixed to the opening end of said filter sleeve.
According to another aspect; Provide a kind of being used for to remove the particulate filter bag from slurries; Said filter bag comprises: filtration fraction, and it has the opening end that is used to receive the slurry stream in this filtration fraction, and the closing end relative with said opening end; Said filter sleeve is suitable for said particle being kept here in that said slurry stream is out-of-date, to form dirt; And, junctor, the length that it is shorter in length than said filtration fraction is fixed to the opening end of said filter sleeve, and said junctor is processed by the non-scaling material.
According on the other hand; A kind of filter bag that in process for making alumina, is used for removing from Bayer-liquid ferric oxide particles is provided; Said filter bag comprises: filter sleeve, and it has opening end, and the closing end relative with said opening end; Said filter sleeve is processed by a kind of material, and said material is suitable for when Bayer-liquid flows through said filter sleeve, keeping here ferric oxide particles; And, junctor, it is processed by the non-scaling material, and is fixed to the opening end of said filter sleeve.
Description of drawings
In the figure that encloses:
Fig. 1 shows the schematic isometric that is used for the filtering conventional channel-type filter apparatus of Bayer-liquid;
Fig. 2 shows the front view of the filter bag that has the antiscale junctor that is attached to the Bayer-liquid outlet pipe; And
Fig. 3 is the amplification stereogram of the part of filter bag among Fig. 2.
Embodiment
Fig. 2 shows an embodiment who in process for making alumina, is used for the filtering filter bag 20 of Bayer-liquid.Substantially, can see that said filter bag has the filter sleeve 22 and antiscale junctor 26 of elongation, wherein this filter sleeve 22 has a plurality of adjacent passages 24.Filter sleeve 22 is processed by a kind of material, and said material is suitable for from Bayer-liquid, filtering out undesired particle, for example ferric oxide particles.Can use polypropylene fibre or tynex for this reason, for example, as known in the art.Filter sleeve 22 has the closing end (not shown) relative with opening end 28.In use, Bayer-liquid passes the fiber of filter sleeve 22 along the length of filter sleeve 22 through infiltration, thereby gets into the passage of filter sleeve.The metal frame (not shown) is set at passage 24 inside, breaks when receiving by the pressure due to the Bayer-liquid permeable fiber to prevent passage 24.Filter sleeve 22 keeps undesired particle, for example ferric oxide particles.Except caking, said particle can with white lake generation chemical reaction, and crystallize into the adamantine a kind of material that is known as dirt, this finally makes filter bag 20 poor efficiencys and needs and changes.Can see that filter sleeve 22 is tubular form with antiscale junctor 26, and attached with the mode of carrying out fluid flow communication between a kind of tubular form inside that allows filter sleeve 22 and antiscale junctor 26.
Junctor 26 is antiscale, because it is processed by the antiscale material.For this reason, for example can use the multipolymer of the acrylonitrile and butadiene that is called as paracril, perhaps be commonly referred to ethene, the propylene of EPDM rubber, the multipolymer of diene.More generally, have been found that to have 40 to 90, preferably be about 70 Xiao A hardness (Shore A hardness) and be effective as the antiscale material less than some rubber of 1% porosity.In addition, the rubber that has at least 30% elasticity (elongation) can be convenient to install.If find that other materials is suitable, then also can select some other materials.
Antiscale junctor 26 can be molded, then through for example make, bonding or ultrasonic welding is fixed to said fiber.
For the influence of the efficient that makes 26 pairs of filter bags 20 of antiscale junctor minimizes, its length 40 should be less than the length of sleeve 22.Yet for practical purpose, it should have enough length.
Should be understood that the filter bag that various size can be provided.Yet for the embodiment that provides to be used to discuss, the filter bag 20 that illustrates has the length of width 42 and the 3.3m (11 feet) of 61cm (2 feet).Herein, it is chosen with edge 34 that 8mm is provided and the neck 38 (8cm comprises the edge of said 8mm) of about 7.2cm.This allows to arrange two sewing lines, securely junctor 26 is retained to filter sleeve 22.Article one, sewing line 44 (referring to Fig. 3) is at edge or opening end 36 about 3mm places apart from junctor 26, and second sewing line 46 also will far about 2.5cm.For the edge 34 of 8mm, for example, less than about 12mm or even the neck of 20mm be extremely unpractical.Said neck can be longer than 8cm, is unpractical but in said application, use the neck of being longer than 120mm or 135mm.Thereby, preferably have the neck 38 of 70mm to 90mm.For filter bag with different size, preferred other sizes.
Antiscale junctor 26 selected thickness depend on the size of its material, said filter bag and the specification of expection equipment.Among the embodiment that provides in the above, the thickness of rubber can be between 2mm and 5mm.The thickness at 34 places, edge can be bigger, for example between 5mm and 10mm.In said application, edge 34 has the thickness of 8mm.In some applications, can ignore edge 34, this depends on the mode that for example said filter bag is attached to said outlet pipe.
The exemplary filter bag of describing above and illustrating continues test 60 days down in 105 ℃ in equipment.Compare the time that removes obvious cost less of said filter bag with the traditional filter bag in the identical device.
Should be understood that for the complete open text of preferred embodiment is provided, provided above-mentioned embodiment, but many variants and alternate embodiment also are possible.Thereby scope of the present invention is limited the claim of enclosing.
Claims (according to the modification of the 19th of treaty)
1. one kind is used for the filtering filter bag of Bayer-liquid in process for making alumina, and said filter bag comprises: filter sleeve, and it is a piped, has opening end and the closing end relative with said opening end; And, junctor, it is a piped, is processed by the antiscale material, and is fixed to the opening end of said filter sleeve.
2. filter bag as claimed in claim 1, wherein said junctor has: the edge that outwards is orientated, it is positioned at an end relative with said filter sleeve; And, neck, it extends to said edge from said filter sleeve, and said neck is longer than said edge, and the thickness of said neck is less than the thickness at said edge.
3. filter bag as claimed in claim 2, the neck of wherein said junctor is made to said filter sleeve.
4. filter bag as claimed in claim 2, wherein said edge has mechanical resistance, is enough in use maintain hangingly whole filter bag.
5. filter bag as claimed in claim 1, wherein said non-scaling material are a kind of in paracril and the EPDM rubber.
6. filter bag as claimed in claim 1, wherein said antiscale material have 55 to 80 Xiao A hardness and less than 1% porosity.
7. filter bag as claimed in claim 6, wherein said antiscale material has at least 30% elongation.
8. filter bag as claimed in claim 2, wherein said neck has the thickness of 2mm to 5mm, and said edge has the thickness of 5mm to 10mm.
9. filter bag as claimed in claim 1, wherein said junctor through make, a kind of in the bonding and ultrasonic welding is fixed to said filter sleeve.
10. filter bag as claimed in claim 1, a kind of in the multipolymer that wherein said non-scaling material is an acrylonitrile and butadiene and the multipolymer of ethene, propylene and diene.
11. filter bag as claimed in claim 1, wherein said filter sleeve is by a kind of the processing in polypropylene fibre and the tynex.
12. a filter bag that in process for making alumina, is used for removing from Bayer-liquid ferric oxide particles, said filter bag comprises:
Filter sleeve, it has opening end and the closing end relative with said opening end, and said filter sleeve is processed by a kind of material, and said material is suitable for when said Bayer-liquid flows through said filter sleeve, keeping here ferric oxide particles; And
Junctor, it is processed by the non-scaling material, and is fixed to the said opening end of said filter sleeve.
13. filter bag as claimed in claim 12, a kind of in the multipolymer that wherein said non-scaling material is an acrylonitrile and butadiene and the multipolymer of ethene, propylene and diene.
14. filter bag as claimed in claim 12, wherein said non-scaling material are a kind of in paracril and the EPDM rubber.
15. filter bag as claimed in claim 12, wherein said non-scaling material have 40 to 90 Xiao A hardness, the porosity less than 1%, and at least 30% elongation.
16. filter bag as claimed in claim 15, wherein said Xiao A hardness is 55 to 80, is preferably 70.
17. filter bag as claimed in claim 12, wherein said junctor have the edge relative with said filter sleeve.
18. filter bag as claimed in claim 17, wherein said junctor have the neck that thickness is 2mm to 5mm, and wherein said edge has the thickness of 5mm to 10mm.
19. filter bag as claimed in claim 12, wherein said junctor through make, a kind of filtration fraction that is fixed in the bonding and ultrasonic welding.
20. filter bag as claimed in claim 12, the material of wherein said filter sleeve are a kind of in polypropylene fibre and the tynex.
21. one kind is used for the filtering filter bag of Bayer-liquid in process for making alumina; Said filter bag has the piped filter sleeve; Said filter sleeve has opening end and the closing end relative with said opening end; Said filter bag is characterised in that: it also comprises the piped junctor, and said junctor is processed by the antiscale material, and is fixed to the opening end of said filter sleeve with a kind of mode that allows fluid flow communication.
Claims (21)
- A kind of filtering filter bag of Bayer-liquid that in process for making alumina, is used for, said filter bag comprises: filter sleeve, it is a piped, has opening end and the closing end relative with said opening end; And, junctor, it is a piped, is processed by the antiscale material, and is fixed to the opening end of said filter sleeve.
- Filter bag as claimed in claim 1, wherein said junctor has: the edge that outwards is orientated, it is positioned at an end relative with said filter sleeve; And, neck, it extends to said edge from said filter sleeve, and said neck is longer than said edge, and the thickness of said neck is less than the thickness at said edge.
- Filter bag as claimed in claim 2, the neck of wherein said junctor is made to said filter sleeve.
- Filter bag as claimed in claim 2, wherein said edge has mechanical resistance, is enough in use maintain hangingly whole filter bag.
- Filter bag as claimed in claim 1, wherein said non-scaling material are a kind of in paracril and the EPDM rubber.
- Filter bag as claimed in claim 1, wherein said antiscale material have 55 to 80 Xiao A hardness and less than 1% porosity.
- Filter bag as claimed in claim 6, wherein said antiscale material has at least 30% elongation.
- Filter bag as claimed in claim 2, wherein said neck has the thickness of 2mm to 5mm, and said edge has the thickness of 5mm to 10mm.
- Filter bag as claimed in claim 1, wherein said junctor through make, a kind of in the bonding and ultrasonic welding is fixed to said filter sleeve.
- Filter bag as claimed in claim 1, a kind of in the multipolymer that wherein said non-scaling material is an acrylonitrile and butadiene and the multipolymer of ethene, propylene and diene.
- Filter bag as claimed in claim 1, wherein said filter sleeve is by a kind of the processing in polypropylene fibre and the tynex.
- A kind of filter bag that in process for making alumina, is used for removing ferric oxide particles from Bayer-liquid, said filter bag comprises:Filter sleeve, it has opening end and the closing end relative with said opening end, and said filter sleeve is processed by a kind of material, and said material is suitable for when said Bayer-liquid flows through said filter sleeve, keeping here ferric oxide particles; AndJunctor, it is processed by the non-scaling material, and is fixed to the said opening end of said filter sleeve.
- Filter bag as claimed in claim 12, a kind of in the multipolymer that wherein said non-scaling material is an acrylonitrile and butadiene and the multipolymer of ethene, propylene and diene.
- Filter bag as claimed in claim 12, wherein said non-scaling material are a kind of in paracril and the EPDM rubber.
- Filter bag as claimed in claim 12, wherein said non-scaling material have 40 to 90 Xiao A hardness, the porosity less than 1%, and at least 30% elongation.
- Filter bag as claimed in claim 15, wherein said Xiao A hardness is 55 to 80, is preferably 70.
- Filter bag as claimed in claim 12, wherein said junctor have the edge relative with said filter sleeve.
- Filter bag as claimed in claim 17, wherein said junctor have the neck that thickness is 2mm to 5mm, and wherein said edge has the thickness of 5mm to 10mm.
- Filter bag as claimed in claim 12, wherein said junctor through make, a kind of filtration fraction that is fixed in the bonding and ultrasonic welding.
- Filter bag as claimed in claim 12, the material of wherein said filter sleeve are a kind of in polypropylene fibre and the tynex.
- A kind of filtering filter bag of Bayer-liquid that in process for making alumina, is used for; Said filter bag has the piped filter sleeve; Said filter sleeve has opening end and the closing end relative with said opening end; Said filter bag is characterised in that: it also comprises the piped junctor, and said junctor is processed by the antiscale material, and is fixed to the opening end of said filter sleeve with a kind of mode that allows fluid flow communication.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US15242509P | 2009-02-13 | 2009-02-13 | |
| US61/152,425 | 2009-02-13 | ||
| PCT/CA2010/000201 WO2010091515A1 (en) | 2009-02-13 | 2010-02-11 | Filter bag for bayer liquor filtration |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102333895A true CN102333895A (en) | 2012-01-25 |
| CN102333895B CN102333895B (en) | 2013-03-27 |
Family
ID=42561351
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201080007706.0A Expired - Fee Related CN102333895B (en) | 2009-02-13 | 2010-02-11 | Filter bag for bayer liquor filtration |
Country Status (5)
| Country | Link |
|---|---|
| CN (1) | CN102333895B (en) |
| AU (1) | AU2010213328B2 (en) |
| BR (1) | BRPI1008790B1 (en) |
| CA (1) | CA2711216C (en) |
| WO (1) | WO2010091515A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105263596A (en) * | 2013-06-05 | 2016-01-20 | 瑟法Bdh有限公司 | Closure for leaf filter in alumina production |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FI20125414L (en) * | 2012-04-17 | 2013-10-18 | Metso Fabrics Oy | Filter bag, method of its manufacture and use |
| CN114057210B (en) * | 2021-11-02 | 2023-06-27 | 启东亚太药业有限公司 | Method and equipment for synthesizing food-grade potassium hydrogen sulfite |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4128480A (en) * | 1974-08-23 | 1978-12-05 | Alcan Research And Development Limited | Filtration of liquors |
| US5639369A (en) * | 1995-07-14 | 1997-06-17 | W. L. Gore & Associates, Inc. | Filter element |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2653716A (en) * | 1949-07-08 | 1953-09-29 | Kaiser Aluminium Chem Corp | Treatment of filtering apparatus |
| CA2229926C (en) * | 1995-08-31 | 2002-02-26 | Alcan International Limited | Ultrasonic probes for use in harsh environments |
-
2010
- 2010-02-11 WO PCT/CA2010/000201 patent/WO2010091515A1/en active Application Filing
- 2010-02-11 CA CA2711216A patent/CA2711216C/en not_active Expired - Fee Related
- 2010-02-11 AU AU2010213328A patent/AU2010213328B2/en not_active Ceased
- 2010-02-11 BR BRPI1008790A patent/BRPI1008790B1/en not_active IP Right Cessation
- 2010-02-11 CN CN201080007706.0A patent/CN102333895B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4128480A (en) * | 1974-08-23 | 1978-12-05 | Alcan Research And Development Limited | Filtration of liquors |
| US5639369A (en) * | 1995-07-14 | 1997-06-17 | W. L. Gore & Associates, Inc. | Filter element |
Non-Patent Citations (1)
| Title |
|---|
| 李丹等: "中小型工业锅炉湿式钙法脱硫中结垢堵塞问题研究", 《热力发电》, 31 December 2004 (2004-12-31), pages 32 - 34 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105263596A (en) * | 2013-06-05 | 2016-01-20 | 瑟法Bdh有限公司 | Closure for leaf filter in alumina production |
| CN105263596B (en) * | 2013-06-05 | 2017-08-25 | 瑟法Bdh有限公司 | It is used for the closure member of leaf filter in alumina producing |
Also Published As
| Publication number | Publication date |
|---|---|
| CA2711216A1 (en) | 2010-08-19 |
| BRPI1008790A2 (en) | 2016-03-08 |
| CA2711216C (en) | 2011-08-02 |
| CN102333895B (en) | 2013-03-27 |
| BRPI1008790B1 (en) | 2016-11-29 |
| WO2010091515A1 (en) | 2010-08-19 |
| AU2010213328A1 (en) | 2011-08-18 |
| AU2010213328B2 (en) | 2016-02-25 |
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