CN103601475A - High-aluminum bearing ceramic bar beam and preparation method thereof - Google Patents
High-aluminum bearing ceramic bar beam and preparation method thereof Download PDFInfo
- Publication number
- CN103601475A CN103601475A CN201310529368.2A CN201310529368A CN103601475A CN 103601475 A CN103601475 A CN 103601475A CN 201310529368 A CN201310529368 A CN 201310529368A CN 103601475 A CN103601475 A CN 103601475A
- Authority
- CN
- China
- Prior art keywords
- bar beam
- base substrate
- days
- preparation
- ball milling
- 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.)
- Granted
Links
Landscapes
- Compositions Of Oxide Ceramics (AREA)
Abstract
The invention discloses a high-aluminum bearing ceramic bar beam and a preparation method thereof. The preparation method is as follows: 64-72wt% of aluminum trioxide, 10-15%wt% of zirconia, 10-15wt% of china clay and 4-6wt% of wollastonite raw material are mixed by ball milling, then Guangdong black mud, carboxymethyl cellulose and water are added for ball milling mixing to prepare a block-shaped mud material, the block-shaped mud material is made into a blank in a stale vacuum mud refining machine, and the blank is coated with a film for nature drying, then is put in a hot air stove for not less than 15 days for drying to have a water content below 0.2%, further is put into a high-temperature shuttle kiln for heating to 600-700 DEG C, is kept warm for 8 to 10 hours, then is heated to 1400 - 1500 DEG C, and is kept warm for 4 to 5 hours for cooling to discharge. The high-aluminum bearing ceramic bar beam has high acid and alkali resistance and corrosion resistance, also has high compressive strength and flexural strength and high opening rate, is suitable for requirements of high gas velocity, reduces the use number of the bar beam, has the characteristics of stability, safety, low resistance, low consumption and uniform distribution in a strong acid medium, and can improve the acid yield by more than 12%, increase the service life by more than 3 years, and reduce the production cost by more than 30%.
Description
Technical field
The present invention relates to the bar beam using in a kind of acid industry drying and absorbing tower, especially relate to high alumina load-bearing ceramic bar beam and preparation method thereof.
Background technology
In acid industry drying and absorbing tower, need to support filler and catalyzer etc. with bar beam, because drying and absorbing tower working conditions is very severe, bar beam not only needs have good acid and alkali-resistance, corrosion and resistance to elevated temperatures, and will have higher resistance to compression and folding strength under these conditions.Bar beam is mostly 1 meter of above elongated strip and adopts general ceramic material to make at present, ceramic bar beam percentage of open area is less, resistance to compression and folding strength low, folding strength is generally in 150MPa left and right, do not reach the requirement of actual requirement 180 MPa, thereby in actual production, easily cause the local damage of bar beam and cause accident to occur, even stop production, working heat stability is low, increase maintenance load, reduced production capacity, improved production cost.
Summary of the invention
The existing problem of conventional ceramic bar beam of using for drying and absorbing tower in above-mentioned prior art, the invention provides a kind of not only acid and alkali-resistance, corrosion and high temperature resistant, and there is high percentage of open area, ultimate compression strength and folding strength, can improve production capacity, the high alumina load-bearing ceramic bar beam and the preparation method that reduce production costs.
The technical scheme that the technical problem to be solved in the present invention is taked is: the preparation method of high alumina load-bearing ceramic bar beam is:
1, first by the ball milling mixing in proportion of 70-72wt% alchlor, 10-15% wt% zirconium white, 10-15 wt% china clay and 4-6 wt% wollastonite,
2, add again the Guangdong black mud of above-mentioned compound weight 3-5 wt% and the carboxymethyl cellulose of 3-5 wt%, and add suitable quantity of water mixing and ball milling and make cake mass,
3, cake mass is old more than 10 days, then bar beam base substrate is made in extrusion molding in vacuum deairing machine,
4, bar beam base substrate is no less than to 45 days with film coated nature airing, makes bar beam base substrate moisture content be less than 5%,
5, again the bar beam base substrate of airing is inserted in hotblast stove and is dried and is no less than 15 days, make bar beam body drying to moisture content, below 0.2%, make work in-process bar beam,
6, again work in-process bar beam is inserted in high-temperature shuttle kiln, be incubated 8-10 hour after being first heated to 600-700 ℃, then be warming up to 1400-1500 ℃ of insulation cooling coming out of the stove after 4-5 hour.
In of the present invention beam, alchlor content can reach more than 70%, higher than conventional ceramic bar beam alchlor content, thereby can make ultimate compression strength and folding strength greatly improve, can increase weight-carrying capacity in tower, can also guarantee acid and alkali-resistance and the corrodibility of bar beam simultaneously, acid fastness >=99.8%, bar beam percentage of open area can reach more than 65%.
Technological innovation of the present invention is to improve technical recipe and process of preparing, by adding alchlor and the Guangdong black mud of high-content, by long apolegamy, determine that composition of raw materials makes pug, after pug is long-time old, carry out again extrusion under vacuum, and the way of taking long-time natural airing and oven dry and zone heating insulation to fire, solved existing strip ceramic bar beam (length is more than 2 meters) physical strength low, strip ceramic bar beam is yielding in preparation process, the problem such as easy to crack in use, guaranteeing under physical strength and thermostability, can arrange radical by corresponding minimizing bar beam, reduce tower load, not only improved relieving haperacidity production capacity, and saved production cost.
The key technical indexes of the present invention:
Volume density (g/cm3): >=2.3, water-intake rate (%) :≤0.2,
Ultimate compression strength (MPa): >=450, anti-folding (curved) intensity (MPa): >=235,
Acid fastness (%): >=99.8, thermostability (220-20 ℃): do not split for three times.
In described china clay, contain 46.5% SiO
2with 39.5% Al
2o
3.
Described wollastonite major ingredient is CaCO3, wherein SiO
2content is 51.7%, is a kind of triclinic thin platelike crystal, and it can effectively reduce base substrate and shrinks, and reduces base substrate water absorbability, prevents base substrate later stage cracking, reduces dissipation loss, accelerates the goods thermal losses of the ripe speed of sintering ，Fang Di unit.
The feature that described Guangdong black mud has high viscosity, high whiteness and easily disperses, described carboxymethyl cellulose can form full-bodied colloid, has the feature of viscosity, thickening and emulsion dispersion.
Of the present invention the long bulk that beam is 2000～2100 * 65 * 264mm.
The present invention not only has high acid and alkali-resistance, corrodibility, and there is high ultimate compression strength and folding strength, high percentage of open area, gas speed requirement that can be applicable high, reduce bar beam usage quantity, in strong acid media, work there is stability and safety, low-resistance, low consumption, air-flow is evenly distributed and efficient feature, can improve acid yield more than 12%, increases work-ing life more than 3 years, reduce production costs more than 30%, thereby realize high yield and low cost.
Embodiment
Embodiment 1, and described high alumina ceramic bar beam is comprised of 70wt% alchlor, 13% wt% semi-stability zirconium white, 11 wt% china clay and 6 wt% wollastonite raw materials, and formulated by following processing method;
1, after by above-mentioned raw materials, ball milling mixes in proportion, add again the Guangdong black mud of above-mentioned compound weight 4 wt% and the carboxymethyl cellulose of 3wt%, and add suitable quantity of water (pug has better toughness, the water yield while becoming bulk when hand is rubbed) mixing and ball milling and make cake mass
2, by old 13 days of cake mass, then base substrate is made in extrusion molding in vacuum deairing machine, and during extruding, controlling working temperature should be below 38 ℃,
3, by film coated nature airing 47 days for base substrate, make base substrate moisture content be down to 4.5%,
4, again the base substrate of airing is inserted in hotblast stove and is dried 17 days, make body drying to moisture content, below 0.2%, make work in-process,
5, again work in-process are inserted in high-temperature shuttle kiln, be incubated 8 hours after being first heated to 700 ℃, then be warming up to 4 hours cooling coming out of the stove of 1500 ℃ of insulations.
Embodiment 1 discal patch beam main chemical is:
SiO
2 22.4%，Al
2O
3 73.5%，K
2O 1.8%，Na
2O 0.82%，
CaO 0.85%， MgO 0.14% ， Fe
2O
3 0.39%。
Embodiment 1 discal patch beam the key technical indexes:
Volume density (g/cm3): 2.45, water-intake rate (%): 0.13,
Ultimate compression strength (MPa): 458, folding strength (MPa): 238,
Acid fastness (%): >=99.8, thermostability (220-20 ℃): do not split for three times.
Embodiment 2, and described high alumina ceramic bar beam is comprised of 72wt% alchlor, 10% wt% semi-stability zirconium white, 13wt% china clay and 5 wt% wollastonite raw materials, and formulated by following processing method;
1, after ball milling mixes in proportion by above-mentioned raw materials, then add the Guangdong black mud of above-mentioned compound weight 3 wt% and the carboxymethyl cellulose of 5wt%, and add suitable quantity of water mixing and ball milling and make cake mass,
2, by old 12 days of cake mass, then base substrate is made in extrusion molding in vacuum deairing machine, and during extruding, controlling working temperature should be below 38 ℃,
3, by film coated nature airing 48 days for base substrate, make base substrate moisture content be down to 4.1%,
4, again the base substrate of airing is inserted in hotblast stove and is dried 16 days, make body drying to moisture content, below 0.2%, make work in-process,
5, again work in-process are inserted in high-temperature shuttle kiln, be incubated 10 hours after being first heated to 600 ℃, then be warming up to 5 hours cooling coming out of the stove of 1400 ℃ of insulations.
Embodiment 2 discal patch beam main chemical are:
SiO
2 20.8%，Al
2O
3 74.6%，K
2O 1.7%，Na
2O 0.72%，
CaO 0.95%， MgO 0.18% ， Fe
2O
3 0.34%。
Embodiment 2 discal patch beam the key technical indexes:
Volume density (g/cm3): 2.41, water-intake rate (%): 0.14,
Ultimate compression strength (MPa): 461, folding strength (MPa): 242,
Acid fastness (%): >=99.8, thermostability (220-20 ℃): do not split for three times.
Claims (1)
1. the preparation method of high alumina load-bearing ceramic bar beam, is characterized in that:
A, first by 70-72wt% alchlor, 10-15% wt% zirconium white, 10-15 wt% china clay and 4-6 wt% wollastonite in proportion ball milling mix,
B, the Guangdong black mud that adds again above-mentioned compound weight 3-5 wt% and the carboxymethyl cellulose of 3-5 wt%, and add suitable quantity of water mixing and ball milling and make cake mass,
C, cake mass is old more than 10 days, then bar beam base substrate is made in extrusion molding in vacuum deairing machine,
D, bar beam base substrate is no less than to 45 days with film coated nature airing, makes bar beam base substrate moisture content be less than 5%,
E, the bar beam base substrate of airing is inserted in hotblast stove and to be dryly no less than 15 days again, make bar beam body drying to moisture content, below 0.2%, make work in-process bar beam,
F, again work in-process bar beam is inserted in high-temperature shuttle kiln, be incubated 8-10 hour after being first heated to 600-700 ℃, then be warming up to 1400-1500 ℃ of insulation cooling coming out of the stove after 4-5 hour.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310529368.2A CN103601475B (en) | 2013-11-01 | 2013-11-01 | High-aluminum bearing ceramic bar beam and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310529368.2A CN103601475B (en) | 2013-11-01 | 2013-11-01 | High-aluminum bearing ceramic bar beam and preparation method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103601475A true CN103601475A (en) | 2014-02-26 |
| CN103601475B CN103601475B (en) | 2015-01-28 |
Family
ID=50119761
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310529368.2A Active CN103601475B (en) | 2013-11-01 | 2013-11-01 | High-aluminum bearing ceramic bar beam and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103601475B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107522476A (en) * | 2017-09-20 | 2017-12-29 | 萍乡市兴丰高科实业有限公司 | A kind of manufacture method of Antiwear ceramic roller liner plate |
| CN107602090A (en) * | 2017-09-20 | 2018-01-19 | 江西萍乡龙发实业股份有限公司 | Middle aluminium load-bearing ceramic bar beam preparation method |
| CN107840651A (en) * | 2017-11-15 | 2018-03-27 | 九牧厨卫股份有限公司 | A kind of slurry of the composition for being used to prepare sanitary ceramic body slurry and correlation |
| CN115159995B (en) * | 2022-05-27 | 2023-12-19 | 佛山市陶本科技有限公司 | Backing plate for firing foamed ceramic heat-insulating and decorating integrated plate, preparation method thereof and kiln furniture |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1297864A (en) * | 2000-12-05 | 2001-06-06 | 龚建新 | Cold extrusion formed alumina ceramic product and its making process |
| CN1140479C (en) * | 2000-03-20 | 2004-03-03 | 江苏省宜兴非金属化工机械厂 | Ceramic bar beam for sulfuric acid absorption tower and preparation method |
| CN1807342A (en) * | 2005-01-18 | 2006-07-26 | 江苏省宜兴非金属化工机械厂 | Improved ceramic beam for sulfuric acid absorber and its preparation method |
-
2013
- 2013-11-01 CN CN201310529368.2A patent/CN103601475B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1140479C (en) * | 2000-03-20 | 2004-03-03 | 江苏省宜兴非金属化工机械厂 | Ceramic bar beam for sulfuric acid absorption tower and preparation method |
| CN1297864A (en) * | 2000-12-05 | 2001-06-06 | 龚建新 | Cold extrusion formed alumina ceramic product and its making process |
| CN1807342A (en) * | 2005-01-18 | 2006-07-26 | 江苏省宜兴非金属化工机械厂 | Improved ceramic beam for sulfuric acid absorber and its preparation method |
Non-Patent Citations (1)
| Title |
|---|
| 刘高兴 等: "塑性挤压成型90 氧化铝陶瓷工艺研究", 《现代技术陶瓷》, no. 02, 28 June 2002 (2002-06-28) * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107522476A (en) * | 2017-09-20 | 2017-12-29 | 萍乡市兴丰高科实业有限公司 | A kind of manufacture method of Antiwear ceramic roller liner plate |
| CN107602090A (en) * | 2017-09-20 | 2018-01-19 | 江西萍乡龙发实业股份有限公司 | Middle aluminium load-bearing ceramic bar beam preparation method |
| CN107840651A (en) * | 2017-11-15 | 2018-03-27 | 九牧厨卫股份有限公司 | A kind of slurry of the composition for being used to prepare sanitary ceramic body slurry and correlation |
| CN115159995B (en) * | 2022-05-27 | 2023-12-19 | 佛山市陶本科技有限公司 | Backing plate for firing foamed ceramic heat-insulating and decorating integrated plate, preparation method thereof and kiln furniture |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103601475B (en) | 2015-01-28 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102718512B (en) | Thermal-shock-resistant corundum-spinel refractory castable and preparation method thereof | |
| CN101781120B (en) | Anorthite light-weight and heat insulation refractory material and preparation method thereof | |
| CN102167622B (en) | Aluminum-silicon light heat insulation brick and preparation method thereof | |
| CN102167621B (en) | Aluminum oxide hollow sphere light insulating brick and preparation method thereof | |
| CN103601475B (en) | High-aluminum bearing ceramic bar beam and preparation method thereof | |
| CN105272189A (en) | Microporous mullite ceramic separation membrane support and preparation method thereof | |
| CN110028303B (en) | Reinforced porcelain prepared from common domestic ceramic blank and preparation method thereof | |
| CN102775163A (en) | Silicon carbide-cordierite composite ceramic kiln furniture and preparation method thereof | |
| CN100473625C (en) | High-temperature thermal storage body | |
| CN104744059A (en) | Dry-quenched mullite brick and preparation method thereof | |
| CN103044045A (en) | High-strength aluminum oxide light-weight heat insulation brick and preparation method thereof | |
| CN108892478B (en) | Low-temperature porcelain and preparation method thereof | |
| CN107235738A (en) | A kind of preparation method of fiber reinforced refractory material | |
| CN108083821A (en) | A kind of ceramics saggar and preparation method | |
| CN105237018B (en) | A kind of wear-resisting anti-erosion castable of triple air hose of cement kiln | |
| CN106518115A (en) | Refractory material and preparation method thereof | |
| CN102603319A (en) | Aluminum silicate ceramic fiber surface coating capable of being used at temperature of 1600 DEG C | |
| CN108218444A (en) | A kind of toughening saggar of andalusite containing zirconium and preparation method | |
| CN110204322A (en) | A kind of mullite insulating fire brick and preparation method thereof | |
| CN105130490A (en) | Formula and technology of unfired honeycomb ceramic regenerator | |
| CN102786287B (en) | Al-level fireproof insulating material prepared from riverway slurry and preparation method of Al-level fireproof insulating material | |
| CN105669222B (en) | A kind of heavy and light composite refractory brick containing floating bead | |
| CN105254318B (en) | A kind of ferro-magnesium-aluminum spinelle coal injection pipe prefabricated component | |
| CN110002859B (en) | Corrosion-resistant ceramic roller and preparation method thereof | |
| CN105481408A (en) | Composite refractory brick |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of invention: High-aluminum bearing ceramic bar beam and preparation method thereof Effective date of registration: 20160426 Granted publication date: 20150128 Pledgee: Pingxiang rural commercial bank, Limited by Share Ltd porcelain capital sub branch Pledgor: JIANGXI PINGXIANG LONGFA ENTERPRISE CO., LTD. Registration number: 2016360000003 |
|
| PLDC | Enforcement, change and cancellation of contracts on pledge of patent right or utility model |