CN1198357A - Ceramic filtering board for separating solid from liquid and preparing process - Google Patents
Ceramic filtering board for separating solid from liquid and preparing process Download PDFInfo
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- CN1198357A CN1198357A CN 98111184 CN98111184A CN1198357A CN 1198357 A CN1198357 A CN 1198357A CN 98111184 CN98111184 CN 98111184 CN 98111184 A CN98111184 A CN 98111184A CN 1198357 A CN1198357 A CN 1198357A
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- 238000001914 filtration Methods 0.000 title claims abstract description 25
- 239000000919 ceramic Substances 0.000 title claims description 35
- 238000000034 method Methods 0.000 title claims description 14
- 239000007788 liquid Substances 0.000 title claims description 9
- 239000007787 solid Substances 0.000 title claims description 5
- 239000004927 clay Substances 0.000 claims abstract description 14
- 229910052593 corundum Inorganic materials 0.000 claims abstract description 7
- 239000010431 corundum Substances 0.000 claims abstract description 7
- 239000010433 feldspar Substances 0.000 claims abstract description 7
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 claims abstract description 7
- 229910010271 silicon carbide Inorganic materials 0.000 claims abstract description 7
- KZHJGOXRZJKJNY-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Si]=O.O=[Al]O[Al]=O.O=[Al]O[Al]=O.O=[Al]O[Al]=O KZHJGOXRZJKJNY-UHFFFAOYSA-N 0.000 claims abstract description 6
- 229910052863 mullite Inorganic materials 0.000 claims abstract description 6
- 239000002245 particle Substances 0.000 claims description 50
- 239000000463 material Substances 0.000 claims description 28
- 238000005245 sintering Methods 0.000 claims description 17
- 239000011148 porous material Substances 0.000 claims description 15
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 14
- WNROFYMDJYEPJX-UHFFFAOYSA-K aluminium hydroxide Chemical compound [OH-].[OH-].[OH-].[Al+3] WNROFYMDJYEPJX-UHFFFAOYSA-K 0.000 claims description 10
- 229910021502 aluminium hydroxide Inorganic materials 0.000 claims description 10
- 238000002360 preparation method Methods 0.000 claims description 10
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 9
- 238000000498 ball milling Methods 0.000 claims description 8
- 239000002002 slurry Substances 0.000 claims description 8
- 238000004519 manufacturing process Methods 0.000 claims description 7
- 239000000203 mixture Substances 0.000 claims description 7
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 claims description 7
- 241000978776 Senegalia senegal Species 0.000 claims description 5
- 235000019353 potassium silicate Nutrition 0.000 claims description 5
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 claims description 5
- 238000011049 filling Methods 0.000 claims description 3
- 235000006491 Acacia senegal Nutrition 0.000 claims description 2
- 239000011268 mixed slurry Substances 0.000 claims description 2
- 238000001179 sorption measurement Methods 0.000 claims description 2
- 230000008595 infiltration Effects 0.000 claims 1
- 238000001764 infiltration Methods 0.000 claims 1
- 238000000926 separation method Methods 0.000 abstract description 12
- 239000012141 concentrate Substances 0.000 abstract description 6
- 229910052500 inorganic mineral Inorganic materials 0.000 abstract description 3
- 239000011707 mineral Substances 0.000 abstract description 3
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 abstract description 2
- 230000004520 agglutination Effects 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 7
- 238000002156 mixing Methods 0.000 description 5
- 239000002253 acid Substances 0.000 description 4
- 239000004744 fabric Substances 0.000 description 4
- 235000012204 lemonade/lime carbonate Nutrition 0.000 description 4
- 229920000084 Gum arabic Polymers 0.000 description 3
- 235000010489 acacia gum Nutrition 0.000 description 3
- 239000000205 acacia gum Substances 0.000 description 3
- 238000001035 drying Methods 0.000 description 3
- 238000000465 moulding Methods 0.000 description 3
- 239000000047 product Substances 0.000 description 3
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 230000002378 acidificating effect Effects 0.000 description 2
- 230000015556 catabolic process Effects 0.000 description 2
- 238000006731 degradation reaction Methods 0.000 description 2
- 230000018044 dehydration Effects 0.000 description 2
- 238000006297 dehydration reaction Methods 0.000 description 2
- 239000004615 ingredient Substances 0.000 description 2
- 238000005086 pumping Methods 0.000 description 2
- 239000002689 soil Substances 0.000 description 2
- 230000003245 working effect Effects 0.000 description 2
- 102000010637 Aquaporins Human genes 0.000 description 1
- 108010063290 Aquaporins Proteins 0.000 description 1
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 1
- 239000004411 aluminium Substances 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000001354 calcination Methods 0.000 description 1
- BRPQOXSCLDDYGP-UHFFFAOYSA-N calcium oxide Chemical compound [O-2].[Ca+2] BRPQOXSCLDDYGP-UHFFFAOYSA-N 0.000 description 1
- 239000000292 calcium oxide Substances 0.000 description 1
- ODINCKMPIJJUCX-UHFFFAOYSA-N calcium oxide Inorganic materials [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 239000012065 filter cake Substances 0.000 description 1
- 239000000706 filtrate Substances 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- -1 organism Chemical compound 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 239000011591 potassium Substances 0.000 description 1
- 229910052700 potassium Inorganic materials 0.000 description 1
- CHWRSCGUEQEHOH-UHFFFAOYSA-N potassium oxide Chemical compound [O-2].[K+].[K+] CHWRSCGUEQEHOH-UHFFFAOYSA-N 0.000 description 1
- 229910001950 potassium oxide Inorganic materials 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000004537 pulping Methods 0.000 description 1
- 238000010298 pulverizing process Methods 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 238000004513 sizing Methods 0.000 description 1
- LENZDBCJOHFCAS-UHFFFAOYSA-N tris Chemical compound OCC(N)(CO)CO LENZDBCJOHFCAS-UHFFFAOYSA-N 0.000 description 1
- 238000003828 vacuum filtration Methods 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
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Abstract
The present invention specially relates to the separating filter plate for separating and dewatering of the concentrate ore product. The characteristic lies in that the filter plate is obtained by adopting 60-80% of corundum and/or mullite and/or silicon carbide aggregate grains, 5-30% of alumina and/or clay and/or feld spar aggregate as well as a layer of mud sucked by nagative pressure in the pulp after forming agglutination. The advantages are very little vacuum loss during filtering course, high filtering separation capability and specially capable of using for dewatering separation concentration for associated mineral, lean ore of high mine.
Description
The present invention relates to a kind of solid-liquid separation Microporous Ceramic Filter Plate And Preparation Method, in particular for mine essence mine dehydration exsiccant Microporous Ceramic Filter Plate And Preparation Method.
The mud solid-liquid separation, for example the filter dehydration drying of concentrate product in the mine ore dressing is used filter cloth vacuum filtration machinery (as disc type, canvas rotary drum, cartridge type vacuum filter) usually.But processing power was little when these common defects of filtering machinery were platform, and the efficient low energy expenditure is big, filter cake moisture content height, and concentrate outward transport way is decreased big, even brings pollution along the road environment for the fortune way.Secondly the perviousness of filter cloth breakage and filter cloth makes fine concentrate circulation repeatedly in filtration procedure, has increased fine fraction content in the filtration slurry, and filtration procedure is worsened, and influences filter effect.The sheet frame press filtering machine, complicated in mechanical structure, operation labour intensity is big, and is in high top pressure operation again, frequent mechanical to-and-fro movement, it is higher to be directed at failure rate of machinery, and the Maintenance and Repair workload is big, and filter cloth consumption is many.And for adapting to lean ore, the selected separation needs of associated minerals product, the mineral aggregate granularity is more and more thinner, generally will reach 200 orders even thinner, thereby the apparent that of the drawback of above-mentioned filtering separation device is easily seen.
Capillary ceramic plate is to use the wicking action principle, and under the water moisture state, capillary action can be passed through water, and gas and particulate can not pass through filtration medium, so is a kind of good filtering separation medium, is particularly useful for separating of molecule medium and water.But because the numerous equally distributed micropores of micropore ceramics, make the screen plate strength degradation, brought inconvenience to use.For improving ceramic filter plate intensity and drainage separating power, people make hollow structure with microporous ceramic filter plate, and are interior with particles supports, adopt negative pressure-pumping to be used as power, and force solid-liquid separation.Existing hollow structure microporous ceramic filter plate, make the high temperature sintering material owing to adopt lime carbonate in the base-material, and the calcium oxide that lime carbonate is decomposed to form in high temperature sintering is easier to be corroded in acidic medium, thereby causes ceramic filter plate working strength in acid liquid to reduce; Secondly, existing ceramic filter plate, adopt the once grouting moulding, so the micropore that forms is the isometrical hole that differs in size at thickness direction, and trickle micropore and thicker filtration aspect, it is big to make that liquid passes through resistance, and the few separating power of water amount is low, especially separating power is just lower under subatmospheric (the low pressure reduction as the plateau) condition, so generally be not suitable for using in the plateau low pressure environment; And the once grouting moulding, the screen plate surface is prone to defectives such as pin hole, tiny crack, also can cause strength degradation, so general work-ing life is not long.
The objective of the invention is to overcome the deficiency of above-mentioned prior art, provide a kind of intensity height, the ceramic vacuum filter plate that discharge capacity is strong.
Another object of the present invention is to provide a kind of manufacturing above-mentioned ceramic filter plate, and can form the preparation method of the ceramic filter plate of hole gradient.
Microporous ceramic filter plate of the present invention, sinter capillary ceramic plate into by particles of aggregates and base-material mix and match with hollow layer structure, be filled with the ceramic support particle in the described hollow layer, it is characterized in that said capillary ceramic plate basic composition is particles of aggregates 60-80% (weight percent, as follows), base-material 15-30%, said particles of aggregates is corundum and/or mullite and/or flint clay and/or silicon carbide, and said base-material is aluminum oxide and/or clay and/or feldspar.
The micropore of screen plate of the present invention is mainly piled up by particles of aggregates and is formed, and particles of aggregates adopts the good refractory materialss of high temperature intensity such as corundum (Alpha-alumina), mullite, flint clay, silicon carbide, makes the microwell plate of piling up formation that higher physical strength be arranged.Particles of aggregates material of the present invention can use separately, also can be that more than one mix use.Base-material mainly plays the effect of bonding particles of aggregates, and both mixed sinterings constitute the screen plate supporting mass jointly.Base-material adopts high temperature sintered materials (not containing lime carbonate) such as aluminum oxide, clay, feldspar, can be used alone or as a mixture.The supporting plate micropore is determined jointly by particles of aggregates size, base-material medium clay soil content what and pore former behind the sintering.Determining of average (also the claiming meta) particle diameter of micro-porous filtration plate particles of aggregates of the present invention, be generally 4～6 times of required drilling diameter, the screen plate aperture is then determined by separating particles size to be filtered, as form the micropore of 2-4 μ, the particles of aggregates diameter generally can be defined as 5～15 μ, as obtaining the micro-porous filtration plate supporting mass that mean pore size is 2.5-3 μ, particles of aggregates meta particle diameter is excellent with 12-13 μ especially.For improving screen plate supporting mass intensity and water permeable ability, reduce invalid minute aperture, the particles of aggregates particle diameter should be made every effort to homogeneous, particle up to standard generally should greater than more than 70% for well.Dwindle micropore as need, also can suitably increase base-material content, the aperture is just little for a long time as base-material medium clay soil content, and content aperture after a little while is just big.Support particles effect in the screen plate hollow layer of the present invention, the one, fill and support enhancing screen plate intensity; The 2nd, guarantee again that enough spaces make to filter the water see through and can discharge rapidly.Support particles especially with adopt with the supporting mass same material for well, can reduce sintering number like this, it is loose and make the reduction of screen plate intensity to avoid filling inconsistent supporting mass cracking or the support particles of causing that expand in the once sintered process in back.The support particles shape especially with long strip shape for well, its length and diameter should be a bit larger tham in the microwell plate 1/2 Ullage for well, density approached 50% of hollow volume after support particles was piled up like this, easily form the random three-dimensional space of being used to lead to, both can strengthen supporting plate intensity, can increase the porosity of hollow layer again, make it to form the bigger aquaporin of crossing, improve permeable effect, guarantee that the water of sucking-off can smooth and easy discharge.
The preparation of microporous ceramic filter plate of the present invention comprises aggregate corundum and/or mullite and/or flint clay and/or silicon carbide with 60-80%, and super-fine processing (as comminution by gas stream) is to the required particle diameter particle of (as 4～6 times of micro-pore diameter); The pore former ball milling that the base-material aluminum oxide of 15-30% and/or clay and/or feldspar impurity elimination is added water and 12-20% is made slurries; Again aggregate is mixed with the base-material ball milling, pour into hollow plate body; Make bigger ceramic particle with the solute in the mixed slurry, filling bonds with mud in hollow layer; Form the screen plate supporting mass through 1250～1350 ℃ of sintering, the supporting mass behind the sintering be impregnated in negative-pressure adsorption one deck mud in the mud, at last again through 1250～1350 ℃ of sintering.
For well, and particle up to standard is more preferably greater than 70% with 5～15 μ for the preparation of screen plate of the present invention, its particles of aggregates meta particle diameter, and for adapting to the filtering separation of high fineness ore pulp, its meta particle diameter is preferably 12-13 μ; Base-material mud particle fineness especially with 1-5 μ for well.High temperature burns and loses pore former, and main effect is occupy-place when injection forming, and volatilization forms the micropore of being used to lead in high-temperature sintering process, and pore former can adopt known high temperature to burn and lose material as wood chip, graphite, organism, carbonate etc.For improving screen plate intensity, the preferred aluminium hydroxide of the present invention is made pore former, looks and filters ore pulp grain size, can suitably add some activated carbon, makes it to form big relatively micropore.Because aluminium hydroxide is asymmetric polarity molecule, when moulding, easily produce end to end continuous morphology, be decomposed into aluminum oxide and water behind the high temperature sintering, be filled between particles of aggregates, clay in aluminum oxide and the base-material forms compound, microwell plate intensity is improved, and simultaneous oxidation aluminium has stronger acid resistance again, and microwell plate is still showed in acidic medium higher physical strength.The aluminium hydroxide add-on especially with 12-15% for well.Form carbon dioxide after the activated carbon calcination and overflow, be replenishing of aluminium hydroxide pore-forming material, can add 0～5% according to the pore-forming size requirements.
For making microwell plate that low flow resistance be arranged, can adopt once above negative pressure to inhale slurry, inhale the pulp particle fineness and successively decrease by inhaling the slurry number of times.So more help forming surface compact, the continually varying hole gradient that the internal layer hole is big.The micropore size is decided by slurry fineness and composition, and hole gradient thickness is decided by suction time and number of times, and suction time is long often, and mud infiltrates just thick.
For making in the pulping process mud suspending stabilized, and improve viscosifying power, strengthen moulded pottery not yet put in a kiln to bake intensity, also can add a spot of water glass and Sudan Gum-arabic in the mud.
Below in conjunction with the description of several indefiniteness embodiment, further specify the present invention and preparation.
Fig. 1 is an embodiment of the invention mansion view.
Fig. 2 is that Figure 1A-A is to structure iron.
Embodiment 1: with 87 parts of (weight, down with) flint clay and 16 parts of mullites, being crushed to the meta particle diameter with airflow pulverization method respectively, to reach accounting for more than 70% of 12-13 μ standby.With 43 parts of clays, 22 parts of aluminium hydroxides, 3 parts of activated carbon, adding water for ball milling particle to the mud is to account for 50% about 3 μ.Then the skeleton material is mixed with mud, adds 0.8 part of gum arabic, 0.1 part of water glass again, ball milling mixed mixing mud.Pour into each thick 5mm of both sides, the screen plate supporter 1 of hollow distance 18～19mm; Simultaneously with above-mentioned mixing mud through press filtration, mixing, to make bar, be cut into length be 11～12mm, diameter is the long strip shape support particles 2 of 10mm, pour into after the drying in the screen plate supporter voided layer, pour out unnecessary mud after mixing mud poured into, the dry demoulding can obtain the screen plate supporting mass of mean pore size d=2.5-3.5 μ after 1300 ℃ of sintering.With above-mentioned mixing mud ball milling 24 hours again, supporter after the sintering roughing one end is sealed, the other end connects negative pressure source, immersed ball milling mud negative pressure-pumping 5 minutes, promptly form surface compact, the continually varying hole gradient that the internal layer hole is big just can obtain the hole gradient screen plate that mean pore size is d=1.5-2.5 μ through 1300 ℃ after burning till processing again.
Embodiment 2: the screen plate ingredient groups becomes: 100 parts of Alpha-aluminas (corundum), 25 parts of clays, 1 part of feldspar, 4 parts in aluminum oxide, 18 parts in aluminium hydroxide.Add 0.5 part of gum arabic again, 0.2 part of water glass.By above-mentioned preparation method get final product hole graded ceramics micro-porous filtration plate.
Embodiment 3: the screen plate ingredient groups becomes: 100 parts of emergies, 7 parts of flint claies, 7 parts in silicon carbide, 21 parts of clays, 3 parts of feldspars, 19 parts in aluminium hydroxide.Add 0.5 part of gum arabic again, 0.2 part of water glass.The preparation method is the same substantially.
Above-mentioned hole gradient microporous ceramic filter plate, resistance to air loss-96MPa under moisture state after tested, vacuum leak was less than 3% in 2 minutes, pour water back recoil strength at break greater than 0.15MPa, 4 hours broken, and the copper mine slurry was inhaled slurry＞4.5-6mm in 13 seconds, works better still under subatmospheric (0.85bar).
The present invention is owing to selecting good corundum of hot strength and/or mullite and/or flint clay and/or silicon carbide to make the skeleton material, employing contains the potassium felspar sand of potassium oxide and makes sintering base-material (lime carbonate of acid resistance difference has been abandoned in assembly), reach aluminium hydroxide and make pore former, screen plate intensity and acid resistance erosion medium resistance ability are obviously improved; Inhale sizing process behind the forming and sintering, it is little not only to help forming surface apertures, and insert depth is shallow, be the hole gradient of dwindling continuously, but also reduced surface pinholes and tiny crack, intensity increases again, recoil hydraulic pressure 0.2MPa keeps not ftractureing in 15 minutes, has prolonged the work-ing life of screen plate.Ultra-thin hole gradient millipore filtration layer, resistance is little when filtering separation, and water flow is big, good filtration effect, the separation of produced ability is big, through actual measurement, the more non-hole of gradient screen plate, hole gradient screen plate equates at micro-pore diameter, as be 2-2.5 μ, the convection cell resistance reduces 30-50%, and filtering traffic improves 10%, and the former flow is 30000L/H.M
2. normal atmosphere, latter's flow only are 26000L/H.M
2. normal atmosphere, save power, energy-saving effect is remarkable, and hole gradient screen plate to have adaptability strong, separation efficiency is good, the filtering accuracy height, these use for subatmospheric area drying and dehydrating very significant values.Gradient plate aperture, hole is little simultaneously, can avoid part particulate concentrate to run off with separating underflow, not only improve concentrate product collection rate, and the filtrate solid content is few, can directly make reuse water and use.
Claims (9)
1, a kind of ceramic filtering board for separating solid from liquid, sinter capillary ceramic plate into by particles of aggregates and base-material mix and match with hollow layer structure, be filled with the ceramic support particle in the described hollow layer, it is characterized in that said capillary ceramic plate basic composition is particles of aggregates 60-80% (weight percent, as follows), base-material 15-30%, said particles of aggregates is corundum and/or mullite and/or flint clay and/or silicon carbide, and said base-material is aluminum oxide and/or clay and/or feldspar.
2, according to the described ceramic filtering board for separating solid from liquid of claim 1, it is characterized in that said support particles by the long strip shape that constitutes with screen plate material of the same race, its length and slightly larger in diameter in screen plate Ullage 1/2.
3, the preparation of the described microporous ceramic filter plate of claim 1 comprises the particle of aggregate super-fine processing to 4～6 times of required micro-pore diameters; The pore former ball milling that base-material is added water and 12-20% is made slurries; Again aggregate is mixed with the base-material ball milling, pour into hollow plate body; Make bigger ceramic particle with the solute in the mixed slurry, filling bonds with mud in hollow layer; Form the screen plate supporting mass through 1250～1350 ℃ of sintering, the supporting mass behind the sintering be impregnated in negative-pressure adsorption infiltration one deck mud in the mud, at last again through 1250～1350 ℃ of sintering.
4, according to the manufacture method of the described ceramic filter plate of claim 3, it is characterized in that the average meta particle diameter of said particles of aggregates is 5～15 μ, particle up to standard is greater than 70%.
5,, it is characterized in that the average meta particle diameter of said particles of aggregates is 12-13 μ according to the manufacture method of the described ceramic filter plate of claim 4.
6,, it is characterized in that said mud particle fineness is 1-5 μ according to the manufacture method of the described ceramic filter plate of claim 3.
7,, it is characterized in that said pore former is the activated carbon of aluminium hydroxide and 0～5% according to the manufacture method of the described ceramic filter plate of claim 3.
8,, it is characterized in that said pore former aluminium hydroxide add-on is 12-15% according to the manufacture method of the described ceramic filter plate of claim 7.
9,, it is characterized in that also can adding a spot of water glass and Sudan Gum-arabic in the said mud according to the manufacture method of claim 3,4,5,6,7 or 8 described ceramic filter plates.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN98111184A CN1057711C (en) | 1998-03-15 | 1998-03-15 | Ceramic filtering board for separating solid from liquid and preparing process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN98111184A CN1057711C (en) | 1998-03-15 | 1998-03-15 | Ceramic filtering board for separating solid from liquid and preparing process |
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| CN1198357A true CN1198357A (en) | 1998-11-11 |
| CN1057711C CN1057711C (en) | 2000-10-25 |
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|---|---|---|---|
| CN98111184A Expired - Fee Related CN1057711C (en) | 1998-03-15 | 1998-03-15 | Ceramic filtering board for separating solid from liquid and preparing process |
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| CN101797452A (en) * | 2010-04-09 | 2010-08-11 | 扬中市荣鑫磨具磨料有限公司 | Ceramic vacuum filtering plate |
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| CN2143134Y (en) * | 1992-03-14 | 1993-10-06 | 江苏省宜兴非金属化工机械厂 | High temperature liquid alloy ceramic grid filtering plate |
| CN2204636Y (en) * | 1994-05-20 | 1995-08-09 | 孙淑兰 | Foamed ceramic filtering board |
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Case number: W40514 Conclusion of examination: Declaration of claims 1 and 2 invalid, maintain No. 98111184.X based on claim 3-9 invention patent right part of effective. Decision date: 20030603 Denomination of invention: Ceramic filtering board for separating solid from liquid and preparing process Granted publication date: 20001025 Patentee: Jiangsu Yixing Non-metallic Chemical Industry Machinery Plant Review decision number: 5105 Decision date of declaring invalidation: 20030603 Decision number of declaring invalidation: 5105 |
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