CN1245085A - Corrosion-resistant high-strength mullite filtering material and manufacturing method thereof - Google Patents
Corrosion-resistant high-strength mullite filtering material and manufacturing method thereof Download PDFInfo
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- CN1245085A CN1245085A CN 98116576 CN98116576A CN1245085A CN 1245085 A CN1245085 A CN 1245085A CN 98116576 CN98116576 CN 98116576 CN 98116576 A CN98116576 A CN 98116576A CN 1245085 A CN1245085 A CN 1245085A
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- oxide
- contain
- mullite
- amount
- sand
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- 239000000463 material Substances 0.000 title claims abstract description 32
- 238000001914 filtration Methods 0.000 title claims abstract description 29
- 229910052863 mullite Inorganic materials 0.000 title claims abstract description 27
- 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 title claims abstract description 26
- 238000004519 manufacturing process Methods 0.000 title claims description 12
- 238000005260 corrosion Methods 0.000 title abstract description 4
- 230000007797 corrosion Effects 0.000 title abstract description 4
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 47
- 239000004576 sand Substances 0.000 claims abstract description 27
- MCMNRKCIXSYSNV-UHFFFAOYSA-N Zirconium dioxide Chemical compound O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 claims abstract description 22
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims abstract description 18
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 14
- 239000002994 raw material Substances 0.000 claims abstract description 13
- PNEYBMLMFCGWSK-UHFFFAOYSA-N Alumina Chemical compound [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims abstract description 11
- BRPQOXSCLDDYGP-UHFFFAOYSA-N calcium oxide Chemical compound [O-2].[Ca+2] BRPQOXSCLDDYGP-UHFFFAOYSA-N 0.000 claims abstract description 9
- 239000000292 calcium oxide Substances 0.000 claims abstract description 9
- ODINCKMPIJJUCX-UHFFFAOYSA-N calcium oxide Inorganic materials [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 claims abstract description 9
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N iron oxide Inorganic materials [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 claims abstract description 9
- 239000000395 magnesium oxide Substances 0.000 claims abstract description 9
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 claims abstract description 9
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 claims abstract description 9
- NDLPOXTZKUMGOV-UHFFFAOYSA-N oxo(oxoferriooxy)iron hydrate Chemical compound O.O=[Fe]O[Fe]=O NDLPOXTZKUMGOV-UHFFFAOYSA-N 0.000 claims abstract description 9
- CHWRSCGUEQEHOH-UHFFFAOYSA-N potassium oxide Chemical compound [O-2].[K+].[K+] CHWRSCGUEQEHOH-UHFFFAOYSA-N 0.000 claims abstract description 9
- 229910001950 potassium oxide Inorganic materials 0.000 claims abstract description 9
- 239000000377 silicon dioxide Substances 0.000 claims abstract description 9
- 235000012239 silicon dioxide Nutrition 0.000 claims abstract description 9
- KKCBUQHMOMHUOY-UHFFFAOYSA-N sodium oxide Chemical compound [O-2].[Na+].[Na+] KKCBUQHMOMHUOY-UHFFFAOYSA-N 0.000 claims abstract description 9
- 229910001948 sodium oxide Inorganic materials 0.000 claims abstract description 9
- 239000004408 titanium dioxide Substances 0.000 claims abstract description 9
- 238000000498 ball milling Methods 0.000 claims abstract description 3
- 238000001035 drying Methods 0.000 claims abstract description 3
- 238000001354 calcination Methods 0.000 claims abstract 2
- QDOXWKRWXJOMAK-UHFFFAOYSA-N dichromium trioxide Chemical compound O=[Cr]O[Cr]=O QDOXWKRWXJOMAK-UHFFFAOYSA-N 0.000 claims description 42
- 238000000034 method Methods 0.000 claims description 19
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 claims description 12
- 239000011591 potassium Substances 0.000 claims description 12
- 229910052700 potassium Inorganic materials 0.000 claims description 12
- 229910052782 aluminium Inorganic materials 0.000 claims description 10
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 10
- 229960001866 silicon dioxide Drugs 0.000 claims description 8
- 229910052751 metal Inorganic materials 0.000 claims description 4
- 239000002184 metal Substances 0.000 claims description 4
- 238000004080 punching Methods 0.000 claims description 4
- 239000003513 alkali Substances 0.000 claims description 2
- 238000007664 blowing Methods 0.000 claims description 2
- 239000006227 byproduct Substances 0.000 claims description 2
- 238000007906 compression Methods 0.000 claims description 2
- 230000006835 compression Effects 0.000 claims description 2
- 238000005469 granulation Methods 0.000 claims description 2
- 230000003179 granulation Effects 0.000 claims description 2
- 238000000227 grinding Methods 0.000 claims description 2
- 238000012856 packing Methods 0.000 claims description 2
- 239000002245 particle Substances 0.000 claims description 2
- 239000011148 porous material Substances 0.000 claims description 2
- 229910004298 SiO 2 Inorganic materials 0.000 claims 1
- 230000018044 dehydration Effects 0.000 claims 1
- 238000006297 dehydration reaction Methods 0.000 claims 1
- 239000000126 substance Substances 0.000 abstract description 6
- 239000010883 coal ash Substances 0.000 abstract description 4
- 238000011010 flushing procedure Methods 0.000 abstract description 3
- WGLPBDUCMAPZCE-UHFFFAOYSA-N Trioxochromium Chemical compound O=[Cr](=O)=O WGLPBDUCMAPZCE-UHFFFAOYSA-N 0.000 abstract 2
- 229910000423 chromium oxide Inorganic materials 0.000 abstract 2
- 229910052593 corundum Inorganic materials 0.000 abstract 2
- 239000000203 mixture Substances 0.000 abstract 2
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 abstract 1
- 239000010431 corundum Substances 0.000 abstract 1
- 239000010433 feldspar Substances 0.000 abstract 1
- RVTZCBVAJQQJTK-UHFFFAOYSA-N oxygen(2-);zirconium(4+) Chemical compound [O-2].[O-2].[Zr+4] RVTZCBVAJQQJTK-UHFFFAOYSA-N 0.000 abstract 1
- 229940072033 potash Drugs 0.000 abstract 1
- BWHMMNNQKKPAPP-UHFFFAOYSA-L potassium carbonate Substances [K+].[K+].[O-]C([O-])=O BWHMMNNQKKPAPP-UHFFFAOYSA-L 0.000 abstract 1
- 235000015320 potassium carbonate Nutrition 0.000 abstract 1
- 238000002360 preparation method Methods 0.000 abstract 1
- 239000002689 soil Substances 0.000 abstract 1
- 229910001845 yogo sapphire Inorganic materials 0.000 abstract 1
- 229910001928 zirconium oxide Inorganic materials 0.000 abstract 1
- 239000003245 coal Substances 0.000 description 4
- 239000006004 Quartz sand Substances 0.000 description 1
- 239000002956 ash Substances 0.000 description 1
- 239000011449 brick Substances 0.000 description 1
- 235000019504 cigarettes Nutrition 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 229910052573 porcelain Inorganic materials 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 230000003245 working effect Effects 0.000 description 1
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- Ceramic Products (AREA)
- Compositions Of Oxide Ceramics (AREA)
Abstract
The present invention discloses a corrosion-resistant high-strength mullite filtering material and its preparation method, and its chemical composition includes (by wt%) 50-70% of aluminium oxide, 20-35% of silicon dioxide, 0.3-1.5% of ferric oxide, 0.5-2.2% of potassium oxide, 0.2-1.8% of sodium oxide, 1-2.5% of calcium oxide, 0.5-1% of magnesium oxide, 1-8% of zirconium oxide, 0.7-1.5% of chromium oxide and 0.1-0.4% of titanium dioxide. The material is a-Al2O3Mullite sand, corundum sand, Guangxi black soil, potash feldspar,The raw materials of zirconia, chromium oxide and industrial paste are mixed according to a certain proportion, and the mixture is prepared by crushing, ball milling, drying, granulating, forming and calcining. The filter material of the invention has the advantages of corrosion resistance, high strength, large filtration capacity, back flushing, suitability for filtering and separating coal ash and water generated by various types of coal-fired boilers, and long service life of 15-20 years.
Description
The present invention relates to a kind of filtering material, particularly relate to a kind of high-strength anticorrosion filtering material of mullite and manufacture method thereof.
The steam that present most of industrial production all takes place from the stove that boils, and the coal combusting boiler accounts for more than 80%.Coal combusting boiler coal ash water treatment commonly used generally adopts river sand, sea sand, quartz sand, porcelain ball and handstone to carry out coarse filtration, thick coal smoke ash and suspended substance can filter out, but the water muddiness of discharge do not clarify, and can not reach the standard of discharge water, water resource waste is big, the productive expense height.
The present invention aims to provide a kind of requirement that can not only reach general coarse filtration, the objectionable impurities less than 0.5 μ m in the coal ash water can also be filtered out, and reaches the discharge water standard fully, and the energy back flushing, the filtering material of life-time service and manufacture method thereof.
High-strength anticorrosion filtering material of mullite of the present invention, the weight percent of its chemical constitution is:
Aluminium sesquioxide 50--70; Silicon-dioxide 20--35; Ferric oxide 0.3--1.5;
Potassium oxide 0.5--2.2; Sodium oxide 0.2--1.8; Calcium oxide 1.0--2.5;
Magnesium oxide 0.5--1.0; Zirconium white 1--8; Chromium sesquioxide 0.7--1.5;
Titanium dioxide 0.1--0.4
Its porosity of this material is 30--50%, micro-pore diameter 0.5--80 μ m, tap density 1--1.2t/m
3, ultimate compression strength 1500--2000Kg/cm
2, acid-alkali-resistant degree 95--99%.
The manufacture method of high-strength anticorrosion filtering material of mullite of the present invention, its raw material comprises the a--AL of aluminum content＞99%
2O
3, contain AL
2O
3Measure＞50%, contain SIO
2The mullite sand of amount＞42% contains a--AL
2O
3Emergy, Guangxi black earth, potassium felspar sand, zirconium white, chromium sesquioxide, the industrial paste of amount＞90%, its raw material weight per-cent is:
A--AL
2O
330--40; Mullite sand 25--45; Emergy 5--15;
Guangxi black earth 2--10; Potassium felspar sand 3--10; Zirconium white 2--10;
Chromium sesquioxide 0.5--2.5; Industry paste 0.5--1.5.
Its technical process is: with the a--AL of aluminum content＞99%
2O
3Be crushed between the 20--80 order, contain AL
2O
3Measure＞50%, contain SIO
2Amount＞42% mullite sand is crushed between the 80--100 order, contains a--AL
2O
3Amount＞90% emergy is crushed between the 40--60 order, and three kinds of aggregates are mixed in proportion and knead evenly, and are stand-by.Guangxi black earth, potassium felspar sand, zirconium white, chromium sesquioxide, five kinds of raw materials of industrial paste are mixed in proportion and are crushed to 325 orders, add the water wet ball grinding 8 hours of 10--12% in the ball mill of packing into.Again the aggregate of spy's usefulness is packed into and continue ball milling half an hour in the ball mill, blowing.Dehydrate with slip drying press, make the batching water content between 15--18%.Hole sizer with diameter 0.5--2.5mm sieves dried batching with sieve, and carries out granulation; Make the metal punching block by product specification, particle is inserted in hydropress, be pressed into brick, plate in the metal punching block.The work in-process that suppress are at 80 °--and under 100 ° of conditions, carry out oven dry in 24 hours, make water content less than 2%.Dried work in-process are packed in the garden of falling cigarette kiln and other general kiln, and temperature is controlled at 1100 °--and 1200 °, calcine 4 hours, kiln discharge, inspection after construction is packed.
Filtering material of the present invention is a kind of corrosion-resistant, the intensity height, and filtration yield is big, can back flushing, use repeatedly, the conserve water resource, easy for installation simple, be applicable to the coal combusting boiler coal ash water filtration separating treatment of various models to reach 15--20 work-ing life.
Below in conjunction with embodiment, the present invention is further described: embodiment 1:
High-strength anticorrosion filtering material of mullite of the present invention, the weight percent of chemical constitution is:
Chromium sesquioxide 50; Silicon-dioxide 35; Ferric oxide 1.0; Potassium oxide 1.4
Sodium oxide 0.2; Calcium oxide 1.7; Magnesium oxide 0.8; Zirconium white 8;
Chromium sesquioxide 1.5; Titanium dioxide 0.4.Embodiment 2:
High-strength anticorrosion filtering material of mullite of the present invention, the weight percent of chemical constitution is:
Aluminium sesquioxide 60; Silicon-dioxide 29; Ferric oxide 0.3; Potassium oxide 0.5;
Sodium oxide 1.8; Calcium oxide 1.0; Magnesium oxide 0.5; Zirconium white 6;
Chromium sesquioxide 0.7; Titanium dioxide 0.2.Embodiment 3:
High-strength anticorrosion filtering material of mullite of the present invention, the weight percent of chemical constitution is:
Aluminium sesquioxide 70; Silicon-dioxide 20; Ferric oxide 1.5; Potassium oxide 2.2;
Sodium oxide 0.7; Calcium oxide 2.5; Magnesium oxide 1.0; Zirconium white 1.0;
Chromium sesquioxide 1.0; Titanium dioxide 0.1.Embodiment 4:
The manufacture method of high-strength anticorrosion filtering material of mullite of the present invention, each raw material weight per-cent is:
The a--AL of aluminum content＞99%
2O
330;
Contain a--AL
2O
3Measure＞50%, contain SIO
2The mullite sand 45 of amount＞42%;
Contain a--AL
2O
3The emergy 15 of amount＞90%;
Guangxi black earth 2; Potassium felspar sand 3; Zirconium white 2; Chromium sesquioxide 1.8;
Industry paste 1.2.
Its technical process is with of the present invention identical.Embodiment 5:
The manufacture method of high-strength anticorrosion filtering material of mullite of the present invention, each raw material weight per-cent is:
The a--AL of aluminum content＞99%
2O
335;
Contain a--AL
2O
3Measure＞50%, contain SIO
2The mullite sand 30 of amount＞42%;
Contain a--AL
2O
3The emergy 10 of amount＞90%;
Guangxi black earth 10; Potassium felspar sand 7; Zirconium white 6; Chromium sesquioxide 0.5;
Industry paste 1.5.
Its technical process is with of the present invention identical.Embodiment 6:
The manufacture method of high-strength anticorrosion filtering material of mullite of the present invention, each raw material weight per-cent is:
The a--AL of aluminum content＞99%
2O
340;
Contain a--AL
2O
3Measure＞50%, contain SIO
2The mullite sand 25 of amount＞42%;
Contain a--AL
2O
3The emergy 5 of amount＞90%;
Guangxi black earth 7; Potassium felspar sand 10; Zirconium white 10; Chromium sesquioxide 2.5;
Industry paste 0.5.
Its technical process is with of the present invention identical.
Claims (8)
1, a kind of high-strength anticorrosion filtering material of mullite is characterized in that the weight percent that this materials chemistry is formed is:
Aluminium sesquioxide 50--70; Silicon-dioxide 20--35; Ferric oxide 0.3--1.5;
Potassium oxide 0.5--2.2; Sodium oxide 0.2--1.8; Calcium oxide 1--2.5;
Magnesium oxide 0.5--1; Zirconium white 1--8; Chromium sesquioxide 0.7--1.5;
Titanium dioxide 0.1--0.4;
This material porosity is 30--50%, micro-pore diameter 0.5--80 μ m, tap density 1--1.2t/m
3, ultimate compression strength 1500--2000Kg/cm
2, acid-alkali-resistant degree 95--99%.
2, filtering material according to claim 1 is characterized in that the weight percent that this materials chemistry is formed is:
Aluminium sesquioxide 50; Silicon-dioxide 35; Ferric oxide 1.0; Potassium oxide 1.4;
Sodium oxide 0.2; Calcium oxide 1.7; Magnesium oxide 0.8; Zirconium white 8;
Chromium sesquioxide 1.5; Titanium dioxide 0.4.
3, filtering material according to claim 1 is characterized in that the weight percent that this materials chemistry is formed is:
Aluminium sesquioxide 60; Silicon-dioxide 29; Ferric oxide 0.3 potassium oxide 0.5;
Sodium oxide 1.8; Calcium oxide 1.0 magnesium oxide 0.5; Zirconium white 6;
Chromium sesquioxide 0.7; Titanium dioxide 0.2.
4, filtering material according to claim 1 is characterized in that the weight percent that this materials chemistry is formed is:
Aluminium sesquioxide 70; Silicon-dioxide 20; Ferric oxide 1.5; Potassium oxide 2.2;
Sodium oxide 0.7; Calcium oxide 2.5; Magnesium oxide 1.0; Zirconium white 1.0;
Chromium sesquioxide 1.0; Titanium dioxide 0.1.
5, a kind of manufacture method of high-strength anticorrosion filtering material of mullite, its raw material comprises the a--AL of aluminum content＞99%
2O
3, contain AL
2O
3Measure＞50%, contain SiO
2The mullite sand of amount＞42% contains α--AL
2O
3The emergy of amount＞90%, Guangxi black earth, potassium felspar sand, zirconium white, chromium sesquioxide, industrial paste is characterized in that the above-mentioned raw materials weight percent is:
A--AL
2O
330--40; Mullite sand 25--45; Emergy 5--15;
Guangxi black earth 2--10; Potassium felspar sand 3--10; Zirconium white 2--10;
Chromium sesquioxide 0.5--2.5; Industry paste 0.5--1.5.
Its technical process is: with the a--AL of aluminum content＞99%
2O
3Be crushed between the 20--80 order, contain AL
2O
3Measure＞50%, contain SIO
2The mullite sand of amount＞42% is crushed between the 80--100, contains a--AL
2O
3Amount＞90% emergy is crushed between the 40--60 order, and three kinds of aggregates are mixed in proportion and knead evenly, and are stand-by; Guangxi black earth, potassium felspar sand, zirconium white, chromium sesquioxide, five kinds of raw materials of industrial paste are mixed in proportion and are crushed to 325 orders, and wet ball grinding is 8 hours in the ball mill of packing into; Stand-by aggregate is packed into again and continue ball milling half an hour in the ball mill, blowing, dehydration, drying make the batching water content between 15--18%, with the hole sizer of diameter 0.5--2.5mm dried batching are sieved with sieve, carry out granulation; Make the metal punching block by product specification, particle is inserted in the metal punching block in hydropress, suppress; The work in-process that suppress through air-dry or oven dry, make water content less than 2% again, reinstall in the kiln at 1100 °--and calcination is 4 hours in 1200 ° of temperature, and kiln discharge gets material requested.
6, the manufacture method of filtering material according to claim 5 is characterized in that described raw material weight per-cent is:
The a--AL of aluminum content＞99%
2O
330;
Contain AL
2O
3Measure＞50%, contain SIO
2The mullite sand 45 of amount＞42%;
Contain a--AL
2O
3The emergy 15 of amount＞90%;
Guangxi black earth 2; Potassium felspar sand 3; Zirconium white 2; Chromium sesquioxide 1.8;
Industry paste 1.2.
7, the manufacture method of filtering material according to claim 5 is characterized in that described raw material weight per-cent is:
The a--AL of aluminum content＞99%
2O
335;
Contain AL
2O
3＞50%, contains SIO
2The mullite sand 30 of amount＞42%;
Contain a--AL
2O
3The emergy 10 of amount＞90%;
Guangxi black earth 10; Potassium felspar sand 7; Zirconium white 6; Chromium sesquioxide 0.5;
Industry paste 1.5.
8, the manufacture method of filtering material according to claim 5 is characterized in that described raw material weight per-cent is:
The a--AL of aluminum content＞99%
2O
340;
Contain AL
2O
3Measure＞50%, contain SIO
2The mullite sand 25 of amount＞42%;
Contain a--AL
2O
3The emergy 5 of amount＞90%;
Guangxi black earth 7; Potassium felspar sand 10; Zirconium white 10; Chromium sesquioxide 2.5;
Industry paste 0.5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 98116576 CN1245085A (en) | 1998-08-13 | 1998-08-13 | Corrosion-resistant high-strength mullite filtering material and manufacturing method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 98116576 CN1245085A (en) | 1998-08-13 | 1998-08-13 | Corrosion-resistant high-strength mullite filtering material and manufacturing method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1245085A true CN1245085A (en) | 2000-02-23 |
Family
ID=5225152
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 98116576 Pending CN1245085A (en) | 1998-08-13 | 1998-08-13 | Corrosion-resistant high-strength mullite filtering material and manufacturing method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1245085A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102173857A (en) * | 2010-12-20 | 2011-09-07 | 中钢集团洛阳耐火材料研究院有限公司 | Preparation method of mullite mesh ceramic foam filter |
| CN101415477B (en) * | 2006-03-31 | 2011-09-07 | 博韦尔公开有限公司 | Low expansion corrosion resistant ceramic foam filters for molten aluminum filtration |
| CN102173856A (en) * | 2010-12-20 | 2011-09-07 | 中钢集团洛阳耐火材料研究院有限公司 | Mullite ceramic foam filter for casting and preparation method thereof |
| CN105964055A (en) * | 2016-06-24 | 2016-09-28 | 马鞍山市顺达环保设备有限公司 | Filter material for industrial dedusting device and preparation method of filter material |
-
1998
- 1998-08-13 CN CN 98116576 patent/CN1245085A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101415477B (en) * | 2006-03-31 | 2011-09-07 | 博韦尔公开有限公司 | Low expansion corrosion resistant ceramic foam filters for molten aluminum filtration |
| CN102173857A (en) * | 2010-12-20 | 2011-09-07 | 中钢集团洛阳耐火材料研究院有限公司 | Preparation method of mullite mesh ceramic foam filter |
| CN102173856A (en) * | 2010-12-20 | 2011-09-07 | 中钢集团洛阳耐火材料研究院有限公司 | Mullite ceramic foam filter for casting and preparation method thereof |
| CN105964055A (en) * | 2016-06-24 | 2016-09-28 | 马鞍山市顺达环保设备有限公司 | Filter material for industrial dedusting device and preparation method of filter material |
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