CN1186110C - Composition for making large-diameter filter pore ceramic filter element - Google Patents
Composition for making large-diameter filter pore ceramic filter element Download PDFInfo
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- 239000000919 ceramic Substances 0.000 title claims abstract description 29
- 239000000203 mixture Substances 0.000 title claims abstract description 17
- 239000011148 porous material Substances 0.000 title abstract description 12
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 26
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 17
- 239000000843 powder Substances 0.000 claims abstract description 11
- 238000003837 high-temperature calcination Methods 0.000 claims abstract description 6
- 239000002023 wood Substances 0.000 claims abstract description 4
- 239000002994 raw material Substances 0.000 claims description 12
- 230000008034 disappearance Effects 0.000 claims description 11
- 239000000463 material Substances 0.000 claims description 7
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N iron oxide Inorganic materials [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 claims description 5
- 239000000395 magnesium oxide Substances 0.000 claims description 4
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 claims description 4
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 claims description 4
- ODINCKMPIJJUCX-UHFFFAOYSA-N calcium oxide Inorganic materials [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 claims description 3
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 claims description 3
- 229910052814 silicon oxide Inorganic materials 0.000 claims description 3
- BRPQOXSCLDDYGP-UHFFFAOYSA-N calcium oxide Chemical compound [O-2].[Ca+2] BRPQOXSCLDDYGP-UHFFFAOYSA-N 0.000 claims description 2
- 239000000292 calcium oxide Substances 0.000 claims description 2
- 235000013305 food Nutrition 0.000 claims description 2
- 238000000034 method Methods 0.000 claims description 2
- CHWRSCGUEQEHOH-UHFFFAOYSA-N potassium oxide Chemical class [O-2].[K+].[K+] CHWRSCGUEQEHOH-UHFFFAOYSA-N 0.000 claims description 2
- 229910001950 potassium oxide Inorganic materials 0.000 claims description 2
- KKCBUQHMOMHUOY-UHFFFAOYSA-N sodium oxide Chemical compound [O-2].[Na+].[Na+] KKCBUQHMOMHUOY-UHFFFAOYSA-N 0.000 claims description 2
- 229910001948 sodium oxide Inorganic materials 0.000 claims description 2
- NDLPOXTZKUMGOV-UHFFFAOYSA-N oxo(oxoferriooxy)iron hydrate Chemical compound O.O=[Fe]O[Fe]=O NDLPOXTZKUMGOV-UHFFFAOYSA-N 0.000 claims 1
- 238000012216 screening Methods 0.000 claims 1
- 239000000126 substance Substances 0.000 abstract description 9
- 239000005909 Kieselgur Substances 0.000 abstract description 7
- 230000007613 environmental effect Effects 0.000 abstract description 7
- 239000002245 particle Substances 0.000 abstract description 4
- 239000000853 adhesive Substances 0.000 abstract description 2
- 230000001070 adhesive effect Effects 0.000 abstract description 2
- 238000003912 environmental pollution Methods 0.000 abstract description 2
- 238000004064 recycling Methods 0.000 abstract 1
- 239000012535 impurity Substances 0.000 description 6
- 230000008901 benefit Effects 0.000 description 4
- 238000001914 filtration Methods 0.000 description 4
- 238000011045 prefiltration Methods 0.000 description 4
- 239000003795 chemical substances by application Substances 0.000 description 3
- 239000010802 sludge Substances 0.000 description 3
- 239000011362 coarse particle Substances 0.000 description 2
- 238000005202 decontamination Methods 0.000 description 2
- 230000003588 decontaminative effect Effects 0.000 description 2
- 239000004744 fabric Substances 0.000 description 2
- 239000000835 fiber Substances 0.000 description 2
- 235000021110 pickles Nutrition 0.000 description 2
- 210000002268 wool Anatomy 0.000 description 2
- NWUYHJFMYQTDRP-UHFFFAOYSA-N 1,2-bis(ethenyl)benzene;1-ethenyl-2-ethylbenzene;styrene Chemical compound C=CC1=CC=CC=C1.CCC1=CC=CC=C1C=C.C=CC1=CC=CC=C1C=C NWUYHJFMYQTDRP-UHFFFAOYSA-N 0.000 description 1
- 229910018072 Al 2 O 3 Inorganic materials 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 229920000297 Rayon Polymers 0.000 description 1
- 229910004298 SiO 2 Inorganic materials 0.000 description 1
- -1 Sodium oxide potassium decaoxide Chemical compound 0.000 description 1
- 230000001680 brushing effect Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000000748 compression moulding Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 239000003456 ion exchange resin Substances 0.000 description 1
- 229920003303 ion-exchange polymer Polymers 0.000 description 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 238000005201 scrubbing Methods 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 239000002344 surface layer Substances 0.000 description 1
Classifications
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B14/00—Use of inorganic materials as fillers, e.g. pigments, for mortars, concrete or artificial stone; Treatment of inorganic materials specially adapted to enhance their filling properties in mortars, concrete or artificial stone
- C04B14/02—Granular materials, e.g. microballoons
- C04B14/04—Silica-rich materials; Silicates
- C04B14/08—Diatomaceous earth
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B38/00—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof
- C04B38/06—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof by burning-out added substances by burning natural expanding materials or by sublimating or melting out added substances
- C04B38/063—Preparing or treating the raw materials individually or as batches
- C04B38/0635—Compounding ingredients
- C04B38/064—Natural expanding materials, e.g. clay
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/00474—Uses not provided for elsewhere in C04B2111/00
- C04B2111/00793—Uses not provided for elsewhere in C04B2111/00 as filters or diaphragms
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Dispersion Chemistry (AREA)
- Civil Engineering (AREA)
- Filtering Materials (AREA)
Abstract
一种制作大孔径滤孔陶瓷滤芯的组合物，其包括硅藻土、消失物、粘剂及水，依选定比例调拌均匀制成陶瓷滤芯，施以500～1300℃高温锻烧成型，消失物为木质粉、塑胶粉或经过高温锻烧会消失的物质粉。利用硅藻土与消失物的粒度大小调整陶瓷滤芯孔的孔径和密度，制成的大孔径滤孔的陶瓷滤芯，其表层阻塞时是可简易刷洗清理以供重复使用，具有更长的使用寿命，其回收处理将不致造成环境污染，符合环保要求。A composition for making a large-aperture ceramic filter element, comprising diatomaceous earth, a disappearing substance, an adhesive and water, which are mixed evenly in a selected proportion to form a ceramic filter element, and then calcined at 500-1300°C to form the ceramic filter element. The disappearing substance is wood powder, plastic powder or powder of a substance that disappears after high-temperature calcination. The pore size and density of the ceramic filter element are adjusted by using the particle size of the diatomaceous earth and the disappearing substance. The ceramic filter element with a large pore size can be simply brushed and cleaned for reuse when its surface is blocked, and has a longer service life. Its recycling will not cause environmental pollution, and it meets environmental protection requirements.
Description
技术领域technical field
本发明涉及陶瓷滤芯，是一种制作大孔径滤孔陶瓷滤芯的组合物。The invention relates to a ceramic filter core, which is a composition for making a ceramic filter core with a large-diameter filter hole.
背景技术Background technique
众所周知，传统的陶瓷滤芯的滤孔均极细微，并呈高密度分布，因此对于水浊度较高的地区，极容易遭污泥或铁锈等较粗颗粒杂质阻塞，而影响其过滤水量，故通常均于该高密度滤芯的前面再设置一道或一道以上具有较大滤孔的低密度滤芯，利用前置滤芯预先去除水中较粗颗粗杂质、污泥、悬浮物质等，借以保护后置活性碳滤芯、离子交换树脂滤芯或半透膜(RO)滤芯等高密度滤芯，使其不致被较粗颗粗杂质被覆而影响其滤净或吸附等功能。其主要缺陷在于：常用的前置滤芯，其不外乎是由PP塑胶、纤维、毛线等材质构成，故一经阻塞后即必须抛弃，无法再次冲洗以供重复使用，其不仅消耗性大，造成人力物力负担，且由于不符合环保条件，无法在短时间内完成分解，以致在日后均成为环境高污染物质，不符合经济环保要求。As we all know, the filter pores of traditional ceramic filter elements are extremely fine and distributed in high density. Therefore, in areas with high water turbidity, it is very easy to be blocked by coarse particles such as sludge or rust, which will affect the filtered water. Therefore, Usually, one or more low-density filter elements with larger filter holes are installed in front of the high-density filter element, and the pre-filter element is used to remove coarse impurities, sludge, suspended matter, etc. in the water in advance, so as to protect the post-activation High-density filter elements such as carbon filter elements, ion exchange resin filter elements, or semi-permeable membrane (RO) filter elements prevent them from being covered by coarse impurities and affecting their functions such as filtration or adsorption. Its main defect is: the commonly used pre-filter element is nothing more than made of PP plastic, fiber, wool and other materials, so it must be discarded once it is blocked, and it cannot be washed again for reuse. Manpower and material resources are burdened, and because it does not meet the environmental protection conditions, it cannot be decomposed in a short time, so that it will become a highly polluting substance in the future, which does not meet the economic and environmental protection requirements.
发明内容Contents of the invention
本发明的主要目的在于提供一种制作大孔径滤孔陶瓷滤芯的组合物，其是由硅藻土、消失物、粘剂及水依选定比例调拌均匀，并施高温锻烧而制成各种陶瓷滤芯，该陶瓷滤芯经过滤使用一段时间后，当滤芯被日益增多的异物、杂质阻塞时，是可借硬刷子或菜瓜布在流动水下清洗其阻塞表层，即可恢复原来水流量，因其可供重复刷洗使用，故具有更高的经济效益及更长的使用寿命，且其主原料为硅藻土，故经过掩埋后即可土壤化，而被完全分解，达到取代高耗、低环保、高成本的传统前置式除污滤芯的目的。The main purpose of the present invention is to provide a composition for making large-diameter ceramic filter elements, which is made by mixing diatomite, vanishing matter, viscous agent and water according to a selected ratio, and applying high-temperature calcination. Various ceramic filter elements, after the ceramic filter element has been filtered and used for a period of time, when the filter element is blocked by an increasing number of foreign objects and impurities, you can use a hard brush or pickle cloth to clean the blocked surface under running water, and the original water flow can be restored , because it can be used for repeated scrubbing, it has higher economic benefits and longer service life, and its main raw material is diatomaceous earth, so it can be soiled after being buried and completely decomposed to replace high-consumption , low environmental protection, high cost of the traditional pre-type decontamination filter purpose.
本发明的次要目的在于提供一种制作大孔径滤孔陶瓷滤芯的组合物，其特别是利用硅藻土与消失物的粗度大小，以调整设定陶瓷滤芯孔径的预定孔径和密度，达到依其孔密度的高低以决定所要过滤的物质，制成各种陶瓷滤芯的目的。The secondary purpose of the present invention is to provide a kind of composition that makes large-diameter filter hole ceramic filter element, and it particularly utilizes diatomite and the size of the thickness of vanishing matter, to adjust the preset pore size and density of setting ceramic filter element aperture, reach The material to be filtered is determined according to the pore density, and the purpose of making various ceramic filter elements is determined.
本发明的目的是这样实现的：一种制作大孔径滤扎陶瓷滤芯的组合物，其特征在于：主原料为硅藻土，副原料包括消失物、粘剂及水，其各成分的重量份数配比为：硅藻土37-39、消失物6-8、粘剂6-8、水47-49；该消失物为木质粉、塑胶粉或经过高温锻烧会消失的物质粉。The object of the present invention is achieved like this: a kind of composition of making large-aperture filtering ceramic filter element, is characterized in that: main raw material is diatomite, and auxiliary raw material comprises vanishing matter, sticky agent and water, and the weight part of its each composition The number ratio is: diatomite 37-39, disappearing substance 6-8, viscose 6-8, water 47-49; the disappearing substance is wood powder, plastic powder or substance powder that will disappear after high-temperature calcination.
该硅藻土是采用食品级过滤用的硅藻土为主，其主要成分的重量百分含量如下：氧化硅92％、氧化铝1％、氧化铁1.5％、氧化钙0.3％、氧化镁0.3％、氧化钠十氧化钾2.5％、消失物2.4％。该消失物是经过适当研磨及筛选取得其所需的粒度大小，并利用硅藻土与消失物的粒度大小，以调整设定该陶瓷滤芯孔的预定孔径及其密度。The diatomite is mainly made of diatomite for food grade filtration, and the weight percentage of its main components is as follows: 92% silicon oxide, 1% aluminum oxide, 1.5% iron oxide, 0.3% calcium oxide, 0.3% magnesium oxide %, sodium oxide ten potassium oxide 2.5%, disappearance 2.4%. The disappearance is properly ground and screened to obtain the required particle size, and the diatomite and the particle size of the disappearance are used to adjust and set the predetermined pore size and density of the pores of the ceramic filter element.
本发明的主要优点是；陶瓷滤芯经过滤使用一段时间后，当滤芯被日益增多的异物、杂质阻塞时，是可借硬刷子或菜瓜布在流动水下清洗其阻塞表层，即可恢复原来水流量，因其可供重复刷洗使用，故具有更高的经济效益及更长的使用寿命，且其主原料为硅藻土，故经过掩埋后即可土壤化，而被完全分解，因此可确保不会造成环境污染，符合环保要求，具有取代高耗、低环保、高成本的传统前置式除污滤芯的功效。The main advantage of the present invention is: After the ceramic filter element is filtered and used for a period of time, when the filter element is blocked by increasing foreign matter and impurities, the blocked surface layer can be cleaned under running water with a hard brush or pickle cloth, and the original water can be restored. Flow, because it can be used for repeated brushing, it has higher economic benefits and longer service life, and its main raw material is diatomaceous earth, so it can be soiled after being buried and completely decomposed, so it can ensure It will not cause environmental pollution, meet the requirements of environmental protection, and has the effect of replacing the traditional pre-type decontamination filter element with high consumption, low environmental protection and high cost.
以下配合较佳实施例进一步说明。The following is further described in conjunction with preferred embodiments.
具体实施方式Detailed ways
本发明的所为制作大孔径滤孔陶瓷滤芯的组合物，其主要原料为硅藻土，副原料包括消失物(lgloss)、粘剂(CMC)及水，其成分重量配比为：The composition of the present invention is to make a ceramic filter element with a large pore diameter. Its main raw material is diatomite, and its auxiliary raw materials include disappearance (lgloss), viscous agent (CMC) and water. The weight ratio of its components is:
主原料：硅藻土(diatomaceous earth) 37～39％；Main raw material: diatomaceous earth (diatomaceous earth) 37-39%;
副原料：消失物(lgloss) 6～8％；Sub-raw material: Loss (lgloss) 6～8%;
粘剂(CMC) 6～8％；Adhesive (CMC) 6～8%;
水(Water) 47～49％。Water (Water) 47-49%.
将如上主原料及副原料按比例搅拌混合均匀，通过射出成型、压模成型或模具成型等方式，制成各种陶瓷滤芯胚，再施予高温锻烧，温度在500～1300℃之间，烧结成型本发明的产品。Stir and mix the above main raw materials and auxiliary raw materials in proportion, and make various ceramic filter element blanks by injection molding, compression molding or mold molding, etc., and then apply high-temperature calcination at a temperature between 500 and 1300 ° C. The product of the present invention is sintered.
主原料的硅藻土常采用食品级过滤用的硅藻土为主，其主要成分如下：The diatomite used as the main raw material is often used as the main diatomite for food-grade filtration, and its main components are as follows:
氧化硅(SiO2) 92％；Silicon oxide (SiO 2 ) 92%;
氧化铝(Al2O3) 1％；Aluminum oxide (Al 2 O 3 ) 1%;
氧化铁(Fe2O3) 1.5％；Iron oxide (Fe 2 O 3 ) 1.5%;
氧化钙(CaO) 0.3％；Calcium oxide (CaO) 0.3%;
氧化镁(MgO) 0.3％；Magnesium Oxide (MgO) 0.3%;
氧化钠十氧化钾(Na2O+K2O) 2.5％；Sodium oxide potassium decaoxide (Na 2 O+K 2 O) 2.5%;
消失物(lgloss) 2.4％；Loss (lgloss) 2.4%;
当然，食品级的硅藻土中也会有少量的其它杂质。上述的消失物(lgloss)，是可为木质粉或塑胶粉等，包括经过高温锻烧均会消失的物质均可替代，且该消失物亦可经适当研磨以筛选取得其所需的粒度大小，可利用硅藻土与消失物的粗度大小，以调整设定该陶瓷滤芯孔的预定孔径及其密度，并依其孔密度的高低，以决定所要过滤的物质，非常方便。Of course, food-grade diatomaceous earth also has a small amount of other impurities. The above-mentioned lost matter (lgloss) can be wood powder or plastic powder, etc., including substances that will disappear after high-temperature calcination can be replaced, and the lost matter can also be properly ground to screen to obtain the required particle size , can use the diatomite and the thickness of disappearance to adjust and set the predetermined pore size and density of the ceramic filter core, and determine the material to be filtered according to the pore density, which is very convenient.
综上所述，本发明所提供地制作大孔径滤孔陶瓷滤芯的组合物，依其选定比例调拌均匀，并高温缎烧所制成的各种陶瓷滤芯，其与常用具有细微滤孔的后置式精密陶瓷滤芯相比，显然其材料组合物具有很大区别，且该组合物制成的大孔径滤孔陶瓷滤芯非常适于作为前置滤芯，以供预先去除水中较粗颗粒杂质、污泥、悬浮物质等，尤以本发明具有重复使用及毫无环保忧虑等优越特性，更是传统以P.P塑胶、纤维或毛线等材质构成的前置滤芯所无法相比，故深具产业利用价值。In summary, the composition provided by the present invention for making large-diameter ceramic filter elements is evenly mixed according to the selected ratio, and the various ceramic filter elements made by high-temperature satin firing are different from those commonly used with fine filter holes. Compared with the post-mounted precision ceramic filter element, it is obvious that its material composition is very different, and the large-pore filter ceramic filter element made of this composition is very suitable as a pre-filter element for pre-removing coarse particles of impurities in water, Sludge, suspended matter, etc., especially because the present invention has the advantages of repeated use and no environmental concerns, which is incomparable to the traditional pre-filter elements made of P.P plastic, fiber or wool, so it has deep industrial application value.
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| CN 00129998 CN1186110C (en) | 2000-10-24 | 2000-10-24 | Composition for making large-diameter filter pore ceramic filter element |
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| CN 00129998 CN1186110C (en) | 2000-10-24 | 2000-10-24 | Composition for making large-diameter filter pore ceramic filter element |
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| CN100363084C (en) * | 2005-06-02 | 2008-01-23 | 淄博博纳科技发展有限公司 | Microporous ceramic filtering element with antibacterial water activating function |
| US7938876B2 (en) | 2005-11-16 | 2011-05-10 | GE02 Technologies, Inc. | Low coefficient of thermal expansion materials including nonstoichiometric cordierite fibers and methods of manufacture |
| US7640732B2 (en) | 2005-11-16 | 2010-01-05 | Geo2 Technologies, Inc. | Method and apparatus for filtration of a two-stroke engine exhaust |
| US7938877B2 (en) | 2005-11-16 | 2011-05-10 | Geo2 Technologies, Inc. | Low coefficient of thermal expansion materials including modified aluminosilicate fibers and methods of manufacture |
| US8038759B2 (en) | 2005-11-16 | 2011-10-18 | Geoz Technologies, Inc. | Fibrous cordierite materials |
| US20070107395A1 (en) | 2005-11-16 | 2007-05-17 | Bilal Zuberi | Extruded porous substrate and products using the same |
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| CN101920140B (en) * | 2009-06-16 | 2013-05-01 | 三达膜科技（厦门）有限公司 | Preparation method of composite ceramic filter core containing diatomite and charcoal |
| CN101948301A (en) * | 2010-08-26 | 2011-01-19 | 东莞乔隆家具配件制品有限公司 | Diatomite ceramic filter element and preparation method thereof |
| CN102350127B (en) * | 2011-09-07 | 2014-07-16 | 蚌埠市华顺电动机械厂 | Porous composite filter element and preparation method thereof |
| CN102423574B (en) * | 2011-09-07 | 2014-06-04 | 蚌埠市华顺电动机械厂 | Automobile filter core and its preparation method |
| CN103382118B (en) * | 2013-06-26 | 2015-06-24 | 蚌埠德美过滤技术有限公司 | Carbon fiber ceramic filter core and preparation method thereof |
| CN103830965B (en) * | 2014-03-03 | 2015-09-09 | 芜湖市宝艺游乐科技设备有限公司 | A kind of palm fiber toughened composite ceramic filter element and preparation method thereof |
| CN108325497A (en) * | 2018-02-08 | 2018-07-27 | 河北上善石油机械有限公司 | A kind of aeroge-diatomite multiple stage filtration system and its application |
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2000
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