CN106278180B - Novel continuous porous foamed ceramic and preparation method thereof - Google Patents
Novel continuous porous foamed ceramic and preparation method thereof Download PDFInfo
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- CN106278180B CN106278180B CN201610659221.9A CN201610659221A CN106278180B CN 106278180 B CN106278180 B CN 106278180B CN 201610659221 A CN201610659221 A CN 201610659221A CN 106278180 B CN106278180 B CN 106278180B
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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
- C04B33/00—Clay-wares
- C04B33/02—Preparing or treating the raw materials individually or as batches
- C04B33/13—Compounding ingredients
- C04B33/132—Waste materials; Refuse; Residues
- C04B33/138—Waste materials; Refuse; Residues from metallurgical processes, e.g. slag, furnace dust, galvanic waste
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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
- C04B33/00—Clay-wares
- C04B33/02—Preparing or treating the raw materials individually or as batches
- C04B33/13—Compounding ingredients
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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
- C04B38/00—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof
- C04B38/02—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof by adding chemical blowing agents
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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
- 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
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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
- 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
- C04B2235/9607—Thermal properties, e.g. thermal expansion coefficient
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P40/00—Technologies relating to the processing of minerals
- Y02P40/60—Production of ceramic materials or ceramic elements, e.g. substitution of clay or shale by alternative raw materials, e.g. ashes
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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)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Compositions Of Oxide Ceramics (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
The invention relates to a novel continuous porous foamed ceramic and a preparation method thereof, belonging to the technical field of ceramic material preparation; the composition is prepared from the following raw materials in parts by weight: 50-100 parts of waste slag, 18-50 parts of clay and 0-10 parts of bentonite; according to the invention, the volume is uniformly enlarged through the bubbling action of sulfides of Mn and Fe in the waste slag, so that the waste slag continuously bubbles; the novel high-quality continuous porous foamed ceramics with light weight, water absorption, high strength, heat insulation and no crack can be manufactured at low cost; the novel continuous porous foamed ceramic prepared by the invention can be used as sound insulation and absorption boards on two sides of a highway; the ceramic plate has the service life which is more than 10 times that of a metal material, and contributes greatly to the society; 30% of waste slag discharged in the manufacturing of wide-range ball-milling cast iron products such as automobile engines, tap water cast iron pipes and the like is used as a raw material, so that waste is changed into valuable, and the cost of the invention is low.
Description
Technical Field
The invention relates to a novel continuous porous foamed ceramic and a preparation method thereof, belonging to the technical field of ceramic material preparation.
Background
Conventionally, a ceramic porous body having a light weight and continuous rigid body ventilation hole is generally produced by filling a ceramic composition into pores generated in a urethane resin or the like and then firing the resin portion to generate porosity. The sound absorption material and the permeable ceramics are made by using waste glass balls, coal sintered blocks, municipal waste and tailings for dry pressing, and the product with gaps among particles is left. The formed material is put with high temperature decomposition volatile component in the high temperature drying process, which makes it generate air hole, and the representative is: foam glass. However, most of the products are independent single-hole bubble bodies, and the materials of the products are also non-quality glass.
However, the above techniques have the serious disadvantages of high cost, heavy weight and easy cracking. The conventional art has a drawback 1 that the ceramic porous body using the urethane resin uses inorganic materials and organic materials as raw materials, and has a complicated manufacturing process, and the organic materials are expensive, and the manufacturing cost is about 3 to 7 ten thousand RMB. Cannot be used in production on a large scale. 2. The sound absorption material and the permeable ceramic are manufactured, the sintered blocks of the raw materials are mostly similar to stone properties, the specific gravity is particularly high and is mostly about 1.5 to 2, and the porous ceramic body is heavy in load and very fragile and is inconvenient to use. 3. The foam glass product has the defects that the foam glass product is an independent bubble body and has no air permeability, and the foam glass product is low in impact on heat and easy to crack because of low-quality glass.
Disclosure of Invention
The invention overcomes the defects of the prior art, and aims to provide a novel continuous porous foamed ceramic which has the characteristics of low cost, light weight, high strength, continuous porosity, no crack, heat resistance and the like, and a preparation method thereof.
In order to solve the technical problems, the technical scheme adopted by the invention is as follows: the novel continuous porous foamed ceramic is prepared from the following raw materials in parts by weight: 50-100 parts of waste slag, 18-50 parts of clay and 0-10 parts of bentonite.
The particle size of the waste slag is 0.25-2 mm.
The novel continuous porous foamed ceramic is prepared from the following raw materials in parts by weight: 60 parts of waste slag and 40 parts of clay.
The novel continuous porous foamed ceramic is prepared from the following raw materials in parts by weight: 70 parts of waste slag, 20 parts of clay and 10 parts of bentonite.
The novel continuous porous foamed ceramic is prepared from the following raw materials in parts by weight: 74 parts of waste slag, 18 parts of clay and 8 parts of bentonite.
A process for preparing the continuous porous foamed ceramics includes such steps as mixing waste slags (50-100 wt. portions), clay (18-50), bentonite (0-10) and water (12-25) to obtain solid, kneading in vacuum kneader to obtain predefined shape, drying, baking at 900-1100 deg.C and calcining.
A process for preparing the continuously porous foamed ceramic includes such steps as mixing waste slags (50-80 wt. portions), clay (18-50), bentonite (0-10) and water (12-25) to obtain solid, kneading, drying to obtain water content below 1%, sintering at 700-1000 deg.C, gradually heating to 700 deg.C and 20-40 deg.C, gradually heating to 850 deg.C and 10 deg.C to make each particle become explosive, and sintering at 1000-1150 deg.C to obtain porous ceramic body.
Compared with the prior art, the invention has the following beneficial effects.
According to the invention, the volume is uniformly enlarged through the bubbling action of sulfides of Mn and Fe in the waste slag, so that the waste slag continuously bubbles; a novel continuous porous foamed ceramic having a light weight, water absorption, high strength, heat insulation and high quality without cracks can be produced at a low cost. The novel continuous porous foamed ceramic prepared by the invention can be used as sound insulation and absorption boards on two sides of a highway; the traditional metal material is high in price, easy to corrode and short in service life, and the ceramic plate has the service life which is 10 times or more that of the metal material. Greatly contributes to the society. 30% of waste slag discharged in the manufacturing of wide-range ball-milling cast iron products such as automobile engines, tap water cast iron pipes and the like is used as a raw material, so that waste is changed into valuable, and the cost of the invention is low.
Detailed Description
The present invention is further illustrated by the following specific examples.
Example 1
60 parts of waste slag and 40 parts of clay are prepared from the following raw materials in parts by weight, wherein the particle size of the waste slag is 1 mm.
The preparation method comprises mixing 60 parts by weight of waste slag, 40 parts by weight of clay and 20 parts by weight of water into a solid, kneading the solid into a predetermined shape by a vacuum kneader, drying the solid to a water content of 1% or less, sintering the solid at a temperature of 700-1000 ℃, gradually increasing the temperature by 20 ℃ when the temperature reaches 700 ℃, gradually increasing the temperature by 10 ℃ when the temperature reaches 850 ℃ to cause explosive bubbling of each particle, and sintering the solid at 1150 ℃ to obtain the ceramic porous body.
Example 2
The novel continuous porous foamed ceramic is prepared from 70 parts of waste slag, 20 parts of clay and 10 parts of bentonite according to the following weight parts, wherein the particle size of the waste slag is 0.8 mm.
The preparation method comprises mixing 70 parts by weight of waste slag, 20 parts by weight of clay, 10 parts by weight of bentonite and 25 parts by weight of water into a solid, kneading the solid into a predetermined shape by a vacuum kneader, drying the solid to a water content of 1% or less, sintering the solid at a temperature of 700-1000 ℃, gradually increasing the temperature by 30 ℃ when the temperature reaches 700 ℃, gradually increasing the temperature by 10 ℃ when the temperature reaches 850 ℃ to make each particle explosively bubble, and sintering the solid at 1000 ℃ to obtain the ceramic porous body.
Example 3
The novel continuous porous foamed ceramic is prepared from 74 parts of waste slag, 18 parts of clay and 8 parts of bentonite according to the following weight parts, wherein the particle size of the waste slag is 1 mm.
The preparation method comprises mixing 74 parts of waste slag, 18 parts of clay, 8 parts of bentonite and 18 parts of water in parts by weight into a solid, kneading the solid into a preset shape by a vacuum kneader, drying the solid to obtain a water content of less than 1%, sintering the solid at a temperature of 700-1000 ℃, gradually increasing the temperature by 35 ℃ when the temperature reaches 700 ℃, gradually increasing the temperature by 10 ℃ when the temperature reaches 850 ℃ to ensure that each particle is explosively foamed, and sintering the solid at 1100 ℃ to obtain the ceramic porous body.
Example 4
The novel continuous porous foamed ceramic is prepared from 100 parts by weight of waste slag and 20 parts by weight of clay, wherein the particle size of the waste slag is 0.25 mm.
100 parts of waste slag, 20 parts of clay and 25 parts of water are mixed into a solid state according to the weight part ratio, kneaded into a predetermined shape by a vacuum kneader, dried and then dried at 900 ℃ to be fired into a ceramic porous body.
Example 5
The novel continuous porous foamed ceramic is prepared from 50 parts by weight of waste slag, 45 parts by weight of clay and 5 parts by weight of bentonite, wherein the particle size of the waste slag is 2 mm.
The ceramic porous body is prepared by mixing 50 parts by weight of waste slag, 45 parts by weight of clay, 5 parts by weight of bentonite and 15 parts by weight of water into a solid state, kneading the solid state into a predetermined shape by a vacuum kneader, drying the solid state, and drying and firing the solid state at 1000 ℃.
Example 6
The novel continuous porous foamed ceramic is prepared from 80 parts by weight of waste slag, 10 parts by weight of clay and 10 parts by weight of bentonite, wherein the particle size of the waste slag is 1.5 mm.
80 parts of waste slag, 10 parts of clay, 10 parts of bentonite and 20 parts of water are mixed into a solid state, kneaded into a predetermined shape by a vacuum kneader, dried at 1100 ℃ and fired into a ceramic porous body.
The raw material mixture ratio and preparation method of the embodiment 1-3 are used for preparing a flat plate shape with the amplitude of 30cm, the length of 50cm and the thickness of 1.00cm, and the properties after sintering are as follows:
the flat plate-shaped ceramic prepared in the above example 3 was used as a road sound-absorbing material, and the yield was measured according to a vertical e.g. injection method as follows:
| frequency (Hz) | 400 | 500 | 630 | 800 | 1000 | 1250 |
| Absorption rate of Acoustic energy (%) | 0.65 | 0.89 | 0.95 | 0.80 | 0.78 | 0.64 |
The present invention may be embodied in other specific forms without departing from its spirit or essential characteristics. The above-described embodiments of the invention are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims, and not by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.
Claims (1)
1. A method for preparing continuous porous foamed ceramics is characterized in that 60 parts of waste slag, 40 parts of clay and 20 parts of water are mixed into a solid by weight, the solid is kneaded into a preset shape by a vacuum kneader, then the dried solid is sintered at the temperature of 700-1000 ℃, the temperature is gradually increased by taking 20 ℃ as a unit when the temperature reaches 700 ℃, the temperature is gradually increased by taking 10 ℃ as a unit when the temperature reaches 850 ℃, so that each particle is caused to foam explosively, and then the solid is sintered into a ceramic porous body at 1150 ℃.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610659221.9A CN106278180B (en) | 2016-08-12 | 2016-08-12 | Novel continuous porous foamed ceramic and preparation method thereof |
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| CN201610659221.9A CN106278180B (en) | 2016-08-12 | 2016-08-12 | Novel continuous porous foamed ceramic and preparation method thereof |
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| CN106278180A CN106278180A (en) | 2017-01-04 |
| CN106278180B true CN106278180B (en) | 2020-02-14 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108751968B (en) * | 2018-06-13 | 2020-12-22 | 北京科技大学 | Preparation method of intrinsic pore-forming porous ceramic material |
| CN110526719B (en) * | 2019-08-19 | 2022-04-29 | 福建德胜新建材有限公司 | Low-thermal-conductivity foamed ceramic and preparation method thereof |
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| JP2002142556A (en) * | 2000-11-16 | 2002-05-21 | Toshiba Ceramics Co Ltd | Method for producing porous ceramic for planting |
| CN1404459A (en) * | 2000-10-17 | 2003-03-19 | 小田建设株式会社 | Porous, sound absorbing ceramic moldings and method for production thereof |
| CN102249731A (en) * | 2010-09-27 | 2011-11-23 | 山东焦化集团有限公司 | Method for producing foamed material from fused slag |
| CN103498428A (en) * | 2013-09-25 | 2014-01-08 | 常州市泛亚微透科技有限公司 | High-sound-absorbing combined material used for traffic sound barrier and manufacturing method of the high-sound-absorbing combined material |
| EP2738148A1 (en) * | 2011-07-01 | 2014-06-04 | Komatsu Seiren Co., Ltd. | Interlocking block |
| CN103951292A (en) * | 2014-04-08 | 2014-07-30 | 周生献 | Continuous preparation apparatus and method of slag porous material |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP5993600B2 (en) * | 2011-08-24 | 2016-09-14 | 小松精練株式会社 | Method for producing porous ceramic sintered body |
| CN102584316B (en) * | 2012-03-05 | 2013-10-23 | 中南大学 | Preparation method for electrolytic manganese residue porous ceramics |
| CN104003749B (en) * | 2014-05-15 | 2016-01-20 | 中国科学院过程工程研究所 | A kind of electrolytic manganese residues closo porous material and foam in place preparation method |
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Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1985004391A1 (en) * | 1984-03-26 | 1985-10-10 | Termika, Industrija In Montaza Izolacij, N. Sol. O | A porous ceramic material |
| SI8410524A8 (en) * | 1984-03-26 | 1996-06-30 | Termika Ind In Montaza Izolaci | Process for making porous ceramic material |
| CN1404459A (en) * | 2000-10-17 | 2003-03-19 | 小田建设株式会社 | Porous, sound absorbing ceramic moldings and method for production thereof |
| EP1333014A4 (en) * | 2000-10-17 | 2005-07-20 | Oda Construction Co Ltd | Porous, sound absorbing ceramic moldings and method for production thereof |
| JP2002142556A (en) * | 2000-11-16 | 2002-05-21 | Toshiba Ceramics Co Ltd | Method for producing porous ceramic for planting |
| CN102249731A (en) * | 2010-09-27 | 2011-11-23 | 山东焦化集团有限公司 | Method for producing foamed material from fused slag |
| EP2738148A1 (en) * | 2011-07-01 | 2014-06-04 | Komatsu Seiren Co., Ltd. | Interlocking block |
| CN103498428A (en) * | 2013-09-25 | 2014-01-08 | 常州市泛亚微透科技有限公司 | High-sound-absorbing combined material used for traffic sound barrier and manufacturing method of the high-sound-absorbing combined material |
| CN103951292A (en) * | 2014-04-08 | 2014-07-30 | 周生献 | Continuous preparation apparatus and method of slag porous material |
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