CN115611616A - Honeycomb wear-resistant unit body and preparation method thereof - Google Patents
Honeycomb wear-resistant unit body and preparation method thereof Download PDFInfo
- Publication number
- CN115611616A CN115611616A CN202211275928.1A CN202211275928A CN115611616A CN 115611616 A CN115611616 A CN 115611616A CN 202211275928 A CN202211275928 A CN 202211275928A CN 115611616 A CN115611616 A CN 115611616A
- Authority
- CN
- China
- Prior art keywords
- honeycomb
- unit body
- wear
- resistant unit
- resistant
- 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.)
- Pending
Links
Images
Classifications
-
- 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
- C04B38/0645—Burnable, meltable, sublimable materials
- C04B38/067—Macromolecular compounds
-
- 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
- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/01—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics
- C04B35/10—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on aluminium oxide
-
- 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
- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/622—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/626—Preparing or treating the powders individually or as batches ; preparing or treating macroscopic reinforcing agents for ceramic products, e.g. fibres; mechanical aspects section B
- C04B35/63—Preparing or treating the powders individually or as batches ; preparing or treating macroscopic reinforcing agents for ceramic products, e.g. fibres; mechanical aspects section B using additives specially adapted for forming the products, e.g.. binder binders
- C04B35/632—Organic additives
- C04B35/634—Polymers
- C04B35/63448—Polymers obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
- C04B35/63488—Polyethers, e.g. alkylphenol polyglycolether, polyethylene glycol [PEG], polyethylene oxide [PEO]
-
- 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
- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/71—Ceramic products containing macroscopic reinforcing agents
- C04B35/78—Ceramic products containing macroscopic reinforcing agents containing non-metallic materials
- C04B35/80—Fibres, filaments, whiskers, platelets, or the like
-
- 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
- C04B38/0006—Honeycomb structures
-
- 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
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/30—Constituents and secondary phases not being of a fibrous nature
- C04B2235/34—Non-metal oxides, non-metal mixed oxides, or salts thereof that form the non-metal oxides upon heating, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
- C04B2235/3418—Silicon oxide, silicic acids or oxide forming salts thereof, e.g. silica sol, fused silica, silica fume, cristobalite, quartz or flint
-
- 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
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/50—Constituents or additives of the starting mixture chosen for their shape or used because of their shape or their physical appearance
- C04B2235/52—Constituents or additives characterised by their shapes
- C04B2235/5208—Fibers
- C04B2235/5216—Inorganic
-
- 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
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/70—Aspects relating to sintered or melt-casted ceramic products
- C04B2235/96—Properties of ceramic products, e.g. mechanical properties such as strength, toughness, wear resistance
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Manufacturing & Machinery (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Catalysts (AREA)
- Compositions Of Oxide Ceramics (AREA)
- Press-Shaping Or Shaping Using Conveyers (AREA)
Abstract
The invention belongs to the field of ceramic preparation, and particularly relates to a honeycomb wear-resistant unit body and a preparation method thereof, wherein the honeycomb wear-resistant unit body comprises a ceramic material and small components, and the ceramic material comprises 20-40 wt% of SiO 2 60 to 70wt% of Al 2 O 3 The minor components are 5 to 15 weight percent of glass fiber and 0.1 to 1 weight percent of polyoxyethylene, and the contents are all calculated by the weight of the ceramic material; the preparation method comprises the steps of mixing, pre-extruding, molding, drying, cutting and calcining; the honeycomb wear-resistant unit body provided by the invention has wide source of raw materials, only has certain index requirements on Si and Al, and greatly reduces the causeAdverse factors caused by various types of materials. The small components are only glass fiber and polyethylene oxide, the wear resistance of the honeycomb unit body can be enhanced, the extrusion molding can be ensured, the sources of the two small components are wide, and the reduction of the types of raw materials and additives can obviously reduce the production cost of the honeycomb wear-resistant unit body.
Description
Technical Field
The invention belongs to the field of ceramic preparation, and particularly relates to a honeycomb wear-resistant unit body and a preparation method thereof.
Background
At present, the denitration temperature of the denitration catalyst of the coal-fired power plant is 300-420 ℃, and at the reaction temperature, the denitration catalyst can reach the denitration efficiency required by the flue gas emission of the power plant, and has higher denitration activity, so that the emission of nitrogen oxides of the power plant reaches the standard. In order to meet the lowest reaction temperature requirement of the denitration catalyst, the denitration reactor generally adopts a high-ash arrangement mode, so that the problem of the reaction activity of the denitration catalyst is solved, but an adverse factor is derived, namely, high-ash-containing flue gas continuously washes the denitration catalyst during operation, the washing can cause two influences on the denitration catalyst, and one of the two influences can cause the loss of active components on the surface of the denitration catalyst; secondly, cause denitration catalyst wearing and tearing, reduced denitration catalyst's volume square volume. Above-mentioned two aspect influence factors all can cause the reduction of denitration catalyst denitration efficiency, seriously influence the flue gas up to standard of power plant and discharge.
At present, the denitration catalyst solves the problem of high-ash smoke flushing, and the adopted technical scheme is to locally harden the denitration catalyst on the end face, but the scheme has limited anti-abrasion effect. Therefore, it is of great significance to adopt effective measures to solve the abrasion problem of the denitration catalyst.
The invention patent with publication number CN112500146A discloses a preparation method of a honeycomb-shaped wear-resistant ceramic block, which is characterized in that after a binder and a forming agent are added into the raw materials of the honeycomb-shaped wear-resistant ceramic block, the raw materials are kneaded, pugging, forming, drying and calcining to prepare the honeycomb-shaped wear-resistant ceramic block, wherein the raw materials comprise 7 raw materials, namely 40-55wt% of cordierite, 10-25wt% of mullite, 16-22wt% of kaolin, 4-8wt% of talc, 3-6wt% of potassium feldspar, 1-3wt% of quartz, 1-2wt% of calcium carbonate and the like; there are 4 kinds of materials as the forming aid. The raw materials of the invention are various, which can cause more uncertain factors and further influence the quality of the honeycomb wear-resistant ceramic block; the variety of raw materials will also increase the production cost.
Therefore, the preparation method of the honeycomb wear-resistant unit body, which is lower in production cost and wide in raw material source, has important economic significance.
Disclosure of Invention
In order to solve the above problems, the present invention discloses a method for preparing a honeycomb wear-resistant unit body, the method comprising the following steps:
mixing: adding water into the raw materials and the small components according to a certain proportion and mixing to obtain a mixed material;
pre-extrusion: pre-extruding the mixed material;
molding: carrying out honeycomb forming on the pre-extruded material according to the hole pattern required by the project;
and (3) drying: heating the formed unit bodies according to a program to carry out drying treatment;
cutting: cutting the dried long unit body into small unit bodies;
and (3) calcining: and (4) calcining the small unit bodies at high temperature to obtain the honeycomb wear-resistant unit bodies.
Further, the mixing mass ratio of the raw materials to the minor components is (6.25-19.6): 1.
further, the raw material is ceramic material, and the ceramic material comprises 20-40 wt% of SiO 2 60 to 70wt% of Al 2 O 3 The content is calculated by ceramic materials;
the small components are 5 to 15 weight percent of glass fiber and 0.1 to 1 weight percent of polyoxyethylene, and the content is calculated by ceramic materials.
Further, the mixing time is 60-120 min, and the water content in the mixed material is 15-20 wt%.
Further, the gap size of the net used for pre-extrusion is 0.2-0.6 mm.
Furthermore, the temperature programming rate is 3-5 ℃/min, the maximum drying temperature is 200 ℃, and the drying time is 10-12 h.
Furthermore, the calcining temperature is 1100 ℃, and the total calcining time is 8-10 h.
Further, the honeycomb hole type is larger than 16 holes;
the cutting is mechanical cutting.
On the other hand, the invention also provides a honeycomb wear-resistant unit body prepared by the preparation method, wherein the honeycomb wear-resistant unit body comprises a raw material and small components, and the mixing mass ratio of the raw material to the small components is (6.25-19.6): 1.
further, the raw material is ceramic material, and the minor component is a mixture of glass fiber and polyethylene oxide;
the ceramic material comprises 20-40 wt% of SiO 2 60 to 70wt% of Al 2 O 3 And the balance impurities; the small components are 5 to 15 weight percent of glass fiber and 0.1 to 1 weight percent of polyethylene oxide, and the contents are all calculated by the weight of the ceramic material.
The invention has the beneficial effects that:
the honeycomb wear-resistant unit body provided by the invention has wide raw material sources, only has certain index requirements on Si and Al, and greatly reduces the influence of adverse factors caused by multiple types of raw materials. The small components are only glass fiber and polyethylene oxide, wherein the glass fiber can further react with the raw materials under the high-temperature condition to strengthen the wear resistance of the honeycomb unit body; the polyethylene oxide is used for adjusting the plasticity of materials in the mixing procedure and ensuring the extrusion molding, the sources of the two small components are wide, and the reduction of the types of the raw materials and the auxiliary agents can obviously reduce the production cost of the honeycomb wear-resistant unit body.
Compared with the common ceramic body with the calcining temperature of more than 1300 ℃, the invention has lower calcining temperature due to less raw material types, the highest calcining temperature is only 1100 ℃, and the production cost of the honeycomb wear-resistant unit body is also reduced in terms of energy consumption.
Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and those skilled in the art can also obtain other drawings according to the drawings without creative efforts.
Fig. 1 shows a flow chart of a method for preparing a honeycomb wear-resistant unit body provided by the invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In order to solve the problems that in the prior art, the loss of active components on the surface of a denitration catalyst is caused by continuously flushing the denitration catalyst when high-ash-content flue gas runs, and the abrasion of the denitration catalyst is caused to reduce the volume and volume of the denitration catalyst, the invention provides a preparation method of a honeycomb wear-resistant unit body, and the specific method is shown as the following figure 1:
mixing: adding water into the raw materials and the small components according to a certain proportion, and mixing to obtain a mixed material;
wherein the raw material is ceramic material, wherein SiO 2 20-40 wt% of Al 2 O 3 60-70wt% and the balance impurities, wherein the ceramic material comprises SiO 2 And Al 2 O 3 Accounts for 95wt% of the whole ceramic material; screening the ceramic material by a wet method to obtain 100-mesh 100% passing rate; the components are 5 to 15 weight percent of glass fiber and 0.1 to 1 weight percent of polyoxyethylene, and the contents are calculated by ceramic materials; the mixing time is 60-120 min, and the water content in the mixed material is 15-20 wt%.
The mixing mass ratio of the raw materials to the minor components is (6.25-19.6): 1.
pre-extrusion: pre-extruding the mixed material by a pre-extruder; preferably, the pre-extruded mesh gap size is 0.2 to 0.6mm.
Molding: forming the honeycomb according to the hole pattern required by the project, wherein the hole pattern of the honeycomb is preferably larger than 16 holes;
and (3) drying: carrying out temperature programming on the molded unit body for drying treatment, wherein the specific conditions of the drying treatment are that the temperature rising rate is 3-5 ℃/min, the highest drying temperature is 200 ℃, and the drying time is 10-12 h;
cutting: cutting the dried long unit body into a required size, wherein the cutting is mechanical cutting;
and (3) calcining: and (3) carrying out high-temperature calcination on the cut small unit bodies to obtain the honeycomb wear-resistant unit body, wherein the preferable conditions for high-temperature calcination are 1100 ℃, and the total calcination time is 8-10 h.
The preparation of the honeycomb abrasion-resistant unit body is described in detail with reference to specific examples.
Example 1
500kg of ceramic material (SiO in the ceramic material) 2 30wt% of Al 2 O 3 Content 65 wt%), adding 25kg of glass fiber and 0.5kg of polyoxyethylene, mixing for 60min, and adjusting the water content of the mixture to 20% by using deionized water in the process of mixing the materials; the mixed material was sieved through a 0.6mm sievePre-extruding and screening impurities; adopting a 16-hole die to perform molding extrusion to obtain a unit with the length of 1 m; placing the wet unit in drying equipment, setting the heating rate to be 3 ℃/min, setting the maximum drying temperature to be 200 ℃, and drying for 12h; and after drying, mechanically cutting the honeycomb into the length required by the project, calcining the honeycomb at 1100 ℃ for 10 hours in total, and cooling the honeycomb to obtain the honeycomb wear-resistant unit body.
Example 2
500kg of ceramic material (SiO) 2 Content 30wt% and Al 2 O 3 The content is 65 wt%), 75kg of glass fiber and 5kg of polyethylene oxide are added and mixed for 120min, and the water content of the mixture is adjusted to 15% by deionized water in the process of mixing the materials; pre-extruding the mixed material by using a 0.2mm screen mesh, and screening out impurities; adopting a 16-hole die to perform molding extrusion to obtain a unit with the length of 1 m; placing the wet unit in drying equipment, setting the heating rate to be 3 ℃/min, setting the maximum drying temperature to be 200 ℃, and drying for 10h; and after drying, mechanically cutting the honeycomb into the length required by the project, calcining the honeycomb at 1100 ℃ for 8 hours in total, and cooling the honeycomb to obtain the honeycomb wear-resistant unit body.
Example 3
500kg of ceramic material (SiO) 2 Content 30wt% and Al 2 O 3 Content 65 wt%), adding 25kg of glass fiber and 0.5kg of polyoxyethylene, mixing for 60min, and adjusting the water content of the mixture to 20% by using deionized water in the process of mixing the materials; pre-extruding the mixed material by using a screen with the thickness of 0.6mm, and screening out impurities; adopting a 16-hole die to perform molding extrusion to obtain a unit with the length of 1 m; placing the wet unit in drying equipment, setting the heating rate to be 3 ℃/min and the maximum drying temperature to be 200 ℃, and drying for 12h; and mechanically cutting the dried honeycomb into the length required by the project, calcining the honeycomb at 1300 ℃ for 10 hours in total, and cooling the honeycomb to obtain the honeycomb wear-resistant unit body.
Example 4
500kg of ceramic material (SiO) 2 Content 15wt% and Al 2 O 3 Content 80 wt%), adding 25kg of glass fiber and 0.5kg of polyoxyethylene, mixing for 60min, and adjusting the water content of the mixture to 20% by using deionized water in the process of mixing the materials; pre-extruding the mixed material by using a screen with the thickness of 0.6mm, and screening out impurities; adopting a 16-hole die for formingExtrusion to obtain a 1m long unit; placing the wet unit in drying equipment, setting the heating rate to be 3 ℃/min, setting the maximum drying temperature to be 200 ℃, and drying for 12h; and after drying, mechanically cutting the honeycomb into the length required by the project, calcining the honeycomb at 1100 ℃ for 10 hours in total, and cooling the honeycomb to obtain the honeycomb wear-resistant unit body.
Example 5
500kg of ceramic material (SiO) 2 Content 55wt% and Al 2 O 3 Content of 40 wt%), 25kg of glass fiber and 0.5kg of polyethylene oxide are added and mixed for 60min, and deionized water is used for adjusting the water content of the mixture to 20% in the process of mixing the materials; pre-extruding the mixed material by using a screen with the thickness of 0.6mm, and screening out impurities; adopting a 16-hole die to perform molding extrusion to obtain a unit with the length of 1 m; placing the wet unit in drying equipment, setting the heating rate to be 3 ℃/min and the maximum drying temperature to be 200 ℃, and drying for 12h; and after drying, mechanically cutting the honeycomb into the length required by the project, calcining the honeycomb at 1100 ℃ for 10 hours in total, and cooling the honeycomb to obtain the honeycomb wear-resistant unit body.
Example 6
500kg of ceramic material (SiO) 2 Content 30wt% and Al 2 O 3 Content of 65 wt%), 25kg of glass fiber and 0.5kg of polyethylene oxide are added and mixed for 60min, and deionized water is used for adjusting the water content of the mixture to 20% in the process of mixing the materials; pre-extruding the mixed materials by using a 0.6mm screen mesh, and screening out impurities; adopting a 16-hole die to perform molding extrusion to obtain a unit with the length of 1 m; placing the wet unit in drying equipment, setting the heating rate to be 8 ℃/min, setting the maximum drying temperature to be 200 ℃, and drying for 12h; and after drying, mechanically cutting the honeycomb into the length required by the project, calcining the honeycomb at 1100 ℃ for 10 hours in total, and cooling the honeycomb to obtain the honeycomb wear-resistant unit body.
Comparative example 1
The abrasion resistant ceramic block was prepared with reference to example 2 disclosed in patent publication CN 112500146A.
The results of the experiment are shown in table 1 below:
TABLE 1 comparison of examples and comparative examples
The unit cost in the table above is calculated in terms of 90% pass rate, and it can be seen from table 1 that the abrasion resistant unit cell prepared according to the conditions of examples 1-3 has a unit cost price of 4540-5059 yuan and an abrasion rate of 0.009-0.014. Examples 4 and 5 are the Al in the ceramic material 2 O 3 Too high of (A) or SiO 2 When the content is too high, the wear rate is increased to about 0.03. Therefore, in the invention, siO in the ceramic material 2 And Al 2 O 3 The content is respectively set between 20 and 40 weight percent and between 60 and 70 weight percent. Example 6 is a study of the temperature rise rate, and the wear rate of the wear-resistant unit body is increased when the temperature rise rate is 8 ℃/min. The wear-resistant ceramic block prepared according to example 2 disclosed in the patent publication No. CN112500146A had a wear rate of 0.032 and a high unit cost.
Although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (10)
1. The preparation method of the honeycomb wear-resistant unit body is characterized by comprising the following steps of:
mixing: adding water into the raw materials and the small components according to a certain proportion, and mixing to obtain a mixed material;
pre-extrusion: pre-extruding the mixed material;
molding: carrying out honeycomb forming on the pre-extruded material according to the hole pattern required by the project;
and (3) drying: heating the formed unit bodies according to a program to carry out drying treatment;
cutting: cutting the dried long unit body into small unit bodies;
and (3) calcining: and (4) calcining the small unit bodies at high temperature to obtain the honeycomb wear-resistant unit bodies.
2. The method for preparing a honeycomb abrasion-resistant unit body according to claim 1,
the mixing mass ratio of the raw materials to the minor components is (6.25-19.6): 1.
3. the method for preparing the honeycomb abrasion-resistant unit body according to claim 1 or 2,
the raw material is ceramic material, and the ceramic material comprises 20-40 wt% of SiO 2 60 to 70wt% of Al 2 O 3 The content is calculated by ceramic materials;
the small components are 5 to 15 weight percent of glass fiber and 0.1 to 1 weight percent of polyoxyethylene, and the content is calculated by ceramic materials.
4. The method for preparing the honeycomb wear-resistant unit body according to claim 1, wherein the mixing time is 60-120 min, and the water content in the mixed material is 15-20 wt%.
5. The method for preparing the honeycomb abrasion-resistant unit body according to claim 1,
the size of the gap between the nets used for pre-extrusion is 0.2-0.6 mm.
6. The method for preparing the honeycomb abrasion-resistant unit body according to claim 1,
the temperature programming rate is 3-5 ℃/min, the maximum drying temperature is 200 ℃, and the drying time is 10-12 h.
7. The method for preparing the honeycomb abrasion-resistant unit body according to claim 1,
the calcination temperature is 1100 ℃, and the total calcination time is 8-10 h.
8. The method for preparing the honeycomb abrasion-resistant unit body according to claim 1,
the honeycomb hole pattern is larger than 16 holes;
the cutting is mechanical cutting.
9. A honeycomb wear-resistant unit body, which is prepared by the preparation method of any one of claims 1 to 8;
the honeycomb wear-resistant unit body comprises a raw material and small components, wherein the mixing mass ratio of the raw material to the small components is (6.25-19.6): 1.
10. the cellular wear-resistant unit body of claim 9,
the raw material is ceramic material, and the minor component is a mixture of glass fiber and polyethylene oxide;
the ceramic material comprises 20-40 wt% of SiO 2 60 to 70wt% of Al 2 O 3 And the balance impurities; the glass fiber and polyethylene oxide are 5-15 wt% and 0.1-1 wt%, respectively based on the weight of the ceramic material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211275928.1A CN115611616A (en) | 2022-10-18 | 2022-10-18 | Honeycomb wear-resistant unit body and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211275928.1A CN115611616A (en) | 2022-10-18 | 2022-10-18 | Honeycomb wear-resistant unit body and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115611616A true CN115611616A (en) | 2023-01-17 |
Family
ID=84863114
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211275928.1A Pending CN115611616A (en) | 2022-10-18 | 2022-10-18 | Honeycomb wear-resistant unit body and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115611616A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4772580A (en) * | 1985-12-27 | 1988-09-20 | Ngk Insulators, Ltd. | Catalyst carrier of cordierite honeycomb structure and method of producing the same |
| CN106582596A (en) * | 2016-12-28 | 2017-04-26 | 湖北思搏盈环保科技有限公司 | Method for forming fly-ash-based honeycomb type denitration catalyst ceramic carrier |
| CN107651972A (en) * | 2017-09-30 | 2018-02-02 | 湖北神雾热能技术有限公司 | A kind of aluminous fly-ash honeycomb ceramic and preparation method thereof |
| CN108249896A (en) * | 2017-12-30 | 2018-07-06 | 湖北神雾热能技术有限公司 | A kind of low-temperature denitration accumulation of heat integration catalytic type Extruded Monolithic Celluar Ceramics |
| CN111377723A (en) * | 2020-03-24 | 2020-07-07 | 洛阳中超新材料股份有限公司 | Low-cost environment-friendly corundum-mullite honeycomb ceramic heat accumulator and preparation method thereof |
| CN112500146A (en) * | 2020-12-03 | 2021-03-16 | 湖南安普诺环保科技有限公司 | Preparation method of honeycomb-shaped wear-resistant ceramic block |
| CN113117727A (en) * | 2021-03-29 | 2021-07-16 | 国能龙源环保有限公司 | Preparation method of honeycomb ceramic catalyst for CO catalytic oxidation of flue gas |
-
2022
- 2022-10-18 CN CN202211275928.1A patent/CN115611616A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4772580A (en) * | 1985-12-27 | 1988-09-20 | Ngk Insulators, Ltd. | Catalyst carrier of cordierite honeycomb structure and method of producing the same |
| CN106582596A (en) * | 2016-12-28 | 2017-04-26 | 湖北思搏盈环保科技有限公司 | Method for forming fly-ash-based honeycomb type denitration catalyst ceramic carrier |
| CN107651972A (en) * | 2017-09-30 | 2018-02-02 | 湖北神雾热能技术有限公司 | A kind of aluminous fly-ash honeycomb ceramic and preparation method thereof |
| CN108249896A (en) * | 2017-12-30 | 2018-07-06 | 湖北神雾热能技术有限公司 | A kind of low-temperature denitration accumulation of heat integration catalytic type Extruded Monolithic Celluar Ceramics |
| CN111377723A (en) * | 2020-03-24 | 2020-07-07 | 洛阳中超新材料股份有限公司 | Low-cost environment-friendly corundum-mullite honeycomb ceramic heat accumulator and preparation method thereof |
| CN112500146A (en) * | 2020-12-03 | 2021-03-16 | 湖南安普诺环保科技有限公司 | Preparation method of honeycomb-shaped wear-resistant ceramic block |
| CN113117727A (en) * | 2021-03-29 | 2021-07-16 | 国能龙源环保有限公司 | Preparation method of honeycomb ceramic catalyst for CO catalytic oxidation of flue gas |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106582596A (en) | Method for forming fly-ash-based honeycomb type denitration catalyst ceramic carrier | |
| CN105964284A (en) | Honeycomb low temperature flue gas denitration catalyst and preparation method thereof | |
| CN106140150A (en) | A kind of honeycomb fashion cerium zirconium manganese titanio denitrating catalyst and preparation method thereof | |
| CN104815644A (en) | Porous honeycomb type denitration catalyst for ship denitration, preparation method and application thereof | |
| CN101791549A (en) | Method for preparing formed selective catalytic reduction denitration catalyst by using ultrasonic mixing sedimentation method | |
| CN102921403A (en) | Method for preparing V2O5-WO3/TiO2 powder for making denitration catalyst | |
| CN111013589A (en) | Red mud catalyst, and forming method and application thereof | |
| CN103752347B (en) | A kind of preparation method of Faveolate denitration catalyst | |
| CN112500146B (en) | Preparation method of honeycomb-shaped wear-resistant ceramic block | |
| CN103263914A (en) | Honeycomb-shaped SCR denitration catalysis material for cement kiln and preparation method thereof | |
| CN115611616A (en) | Honeycomb wear-resistant unit body and preparation method thereof | |
| CN104998684B (en) | A kind of rare earth modified SCR denitration and preparation method thereof | |
| CN103230793A (en) | Power plant special-purposed novel high-efficiency nontoxic denitration catalyst and preparation method thereof | |
| CN105272340A (en) | Method of preparing siliceous and calcareous porous ceramsite and sulphuric acid by decomposing phosphogypsum | |
| CN111250105A (en) | Clover-type denitration catalyst and preparation method thereof | |
| CN104415777A (en) | Active powder preparation method | |
| CN111530476B (en) | A kind of honeycomb rare earth base medium and low temperature denitration catalyst and preparation method thereof | |
| CN105399433A (en) | Purifier and preparation method thereof | |
| CN106540684A (en) | High activity honeycomb fashion SCR catalyst and preparation method thereof | |
| CN114011400A (en) | Preparation method of acid system waste incineration SCR denitration catalyst and prepared denitration catalyst | |
| CN108404966B (en) | Coke oven flue gas low-temperature denitration catalyst and preparation method thereof | |
| CN208711442U (en) | A kind of warehouse separated type denitrated reactor of low temperature | |
| CN106902807A (en) | A kind of particle type low-temperature SCR catalyst and preparation method thereof | |
| CN106622214A (en) | Flue gas denitrification titanium-based catalyst for ceramic and preparation method of catalyst | |
| CN115611292B (en) | Fly ash source copper-based zeolite molecular sieve and preparation method and application thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20230117 |