CN103539468A - High-alumina high-temperature refractory castable for power station boiler - Google Patents
High-alumina high-temperature refractory castable for power station boiler Download PDFInfo
- Publication number
- CN103539468A CN103539468A CN201310508055.9A CN201310508055A CN103539468A CN 103539468 A CN103539468 A CN 103539468A CN 201310508055 A CN201310508055 A CN 201310508055A CN 103539468 A CN103539468 A CN 103539468A
- Authority
- CN
- China
- Prior art keywords
- alumina
- parts
- aggregate
- boiler
- power plant
- 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
- Ceramic Products (AREA)
Abstract
The invention discloses a high-alumina high-temperature refractory castable for a power station boiler, which is prepared from the following components in parts by weight: 60-80 parts of high-alumina aggregate, 5-12 parts of special-grade kaolin, 5-12 parts of binder, 2-8 parts of silicon micro-powder, 2-10 parts of alumina micro-powder and 1-5 parts of water, wherein in the 60-80 parts of high-aluminum aggregate, coarse aggregate accounts for 30-40%, medium aggregate accounts for 35-45%, and fine aggregate accounts for 20-30%; the binder is prepared from the following components in parts by weight: 20-40 parts of magnesium silicate and 80-60 parts of phosphate. The high-alumina high-temperature refractory castable disclosed by the invention has the beneficial effects that the boiler box temperature can be increased by 60-250 DEG C, the thermal efficiency can be improved to 8%, and the service life of the boiler body is prolonged.
Description
Technical field
The invention belongs to technical field of refractory materials, relate in particular to a kind of boiler of power plant High-Alumina high-temperature flame-proof pouring material.
Background technology
Compare with qualitative refractory product, the unshape refractory that the refractory castable of take is representative has that technical process is short, production energy consumption and cost is low, easy to use, applied widely, globality and the advantage such as result of use is good, thereby worldwide obtained developing rapidly, its proportion shared in whole refractory materials is more and more higher.In some refractory technology advanced persons' country, the output of unshape refractory has approached the output that has even surpassed setting goods.For example, the ratio that current Japanese unshape refractory output accounts for whole refractory materials has reached 60% left and right; The U.S. be 50% left and right; English, De,Fa Deng state are 40% ~ 50%.Nowadays, refractory castable has been widely used in the high temperature service of the industrial circles such as metallurgy, building materials, electric power, chemical industry, for example, in quality coal in cement kiln systems, has now widely applied the refractory castable of various materials.
Unshape refractory by the granular and powder-material of rational gradation composition and bonding agent, is jointly formed without be shaped and burn till and direct for refractory materials.The essentially consist of unshape refractory is granular and refractory material powdery, according to its service requirements, can be made by various materials, in order to make these refractory materials be combined into integral body, generally all adds the bonding agent of suitable kind and quantity.The kind of unshape refractory is a lot, can classify according to the material of refractory material used, as siliceous, clayey, High-Alumina, magnesia, rhombspar matter, chromium matter, containing zirconium matter etc.General unshape refractory has the features such as preparation process is easy, yield rate is high, heat energy consumption is lower.Meanwhile, during use, there is conformability strong, can be made into firm Integral construction thing.
But its aluminium sesquioxide content of existing High-Alumina unshape refractory is generally all below 60%, it is high temperature resistant, wear-resisting, resistance to antihunt action is slightly inadequate, in its batching, composition is more single simultaneously, the composite performance of multiple resistance to material can not be provided, structure density and the erosion resistance of product are poor, and sclerosis is condensed slower.Now, all kinds ofly take the high-temperature zone of medium and high temperature kiln that coal, electricity, oil, gas be the energy or the inboard wall of burner hearth of combustion chamber (refractory wall and metallic surface) and all need to carry out integrated poured, thickening, Bonded Repair with unshape refractory, the transformation of the particularly cast of the steel rolling furnace wall of metallurgy industry, repairing, boiler roof sealing and Thermal Power Generation Industry water-tube boiler burner hearth wall with refractory lining, refracto, nozzles around the abrasionproof, boiler roof sealing etc. of abrasionproof and walling of flue to utilize common single High-Alumina unshape refractory be to be difficult to reach wear-resisting, high temperature resistant, antidetonation, energy-saving and cost-reducing effect.
Summary of the invention
In view of this, the deficiency existing for the above prior art, provide that to have aluminium sesquioxide content high, can be on kiln inwall wholely form that density is high, wear-resisting, high temperature resistant, a kind of boiler of power plant High-Alumina high-temperature flame-proof pouring material of erosion resistance, refractory masses that shock resistance is good.
Use a High-Alumina high-temperature flame-proof pouring material, by comprising that following parts by weight component makes: bauxites aggregate 60～80, superfine kaolin 5～12, binding agent 5～12, silicon powder 2～8, alumina powder 2～10, water 1～5.Wherein, in the umber of bauxites aggregate 60～80, coarse aggregate accounts for 30%～40%, and middle aggregate accounts for 35%～45%, and fine aggregate accounts for 20%～30%.Binding agent comprises that following parts by weight component makes: Magnesium Silicate q-agent 20～40, phosphoric acid salt 80～60.
The invention has the beneficial effects as follows: 1,, owing to being integrated poured, strengthen heat-insulating property, can improve 60～250 ℃ of fire box temperatures and reach 8% with raising thermo-efficiency, and burner hearth is less, cast area is larger, improves furnace temperature and thermal effect beneficial just higher, and apparatus of thermo-electric power boiler can burn completely in de-oiling; 2, because aluminium sesquioxide content improves, and increased silicon powder and alumina powder, the anticorrosion antiwear performance of pouring layer is improved, protection body of heater, extends body of heater and reaches 6 times work-ing life.
Embodiment
The technical solution adopted in the present invention is that after a certain proportion of bauxites aggregate, superfine kaolin, binding agent, silicon powder, alumina powder, water are mixed, ageing mixture makes boiler of power plant High-Alumina high-temperature flame-proof pouring material.Concretely:
Use a High-Alumina high-temperature flame-proof pouring material, by comprising that following parts by weight component makes: bauxites aggregate 60～80, superfine kaolin 5～12, binding agent 5～12, silicon powder 2～8, alumina powder 2～10, water 1～5.Wherein, in the umber of bauxites aggregate 60～80, coarse aggregate accounts for 30%～40%, and middle aggregate accounts for 35%～45%, and fine aggregate accounts for 20%～30%.Binding agent comprises that following parts by weight component makes: Magnesium Silicate q-agent 20～40, phosphoric acid salt 80～60.Wherein, bauxites aggregate, superfine kaolin, silicon powder have effect high temperature resistant, wear-resisting, erosion resistance, and superfine kaolin, binding agent have the construction of being beneficial to, bonding and strengthen the effect of sticking power, can improve density and the anti-seismic performance of pouring layer integral body.
Further say: bauxites aggregate is superfine, one-level aluminium vanadine, described superfine high-aluminium vanadine be aluminium sesquioxide content at more than 85% high-aluminium vanadine, one-level high-aluminium vanadine is the high-aluminium vanadine of aluminium sesquioxide content between 80%～85%; Bauxites aggregate through crusher in crushing, be screened into required carse, medium and small aggregate, coarse aggregate size scope is 4.0～2.0mm, middle aggregate size is 1.5～1.0mm, fine aggregate particle diameter is 0.5～0.064mm; Alumina powder is the mixing of Reactive alumina, calcining aluminium micro mist arbitrary proportion; Phosphoric acid salt can be aluminum phosphate.
Below illustrate above-mentioned boiler of power plant High-Alumina high-temperature flame-proof pouring material:
Embodiment 1
(1) for the preparation of boiler of power plant, with the parts by weight of High-Alumina high-temperature flame-proof pouring material raw material, be: 60 parts of bauxites aggregates, 10 parts of superfine kaolin, 10 parts of binding agents, 8 parts of silicon powders, 10 parts of alumina powders, 2 parts, water.Wherein, at the coarse aggregate of bauxites aggregate, account for 30%, middle aggregate accounts for 45%, and fine aggregate accounts for 25%; 20 parts, binding agent mesosilicic acid magnesium, 80 parts of phosphoric acid salt, coarse aggregate size scope is 4.0～3.0mm, and middle aggregate size is 1.2～1.0mm, and fine aggregate particle diameter is 0.3～0.064mm.
(2) bauxites aggregate, superfine kaolin, silicon powder carry out premix, evenly, add binding agent, alumina powder to continue batch mixing to full and uniform, be dry mixed 2 minutes, then after adding clean water to mix 5 ~ 6 minutes, ageing mixture had both obtained boiler of power plant High-Alumina high-temperature flame-proof pouring material.
Its physical performance index is: after 110 ℃ * 24h dries, folding strength is 8 ~ 9MPa, and compressive strength is 80 ~ 90MPa; After 1100 ℃ * 3h high temperature reheating, the folding strength of sample is 25 ~ 35MPa, and compressive strength is 95 ~ 120MPa, and volume density is 2.00 ~ 6.12g/cm
3, line velocity of variation is 0.1 ~ 0.6%.
Embodiment 2
(1) for the preparation of boiler of power plant, with the parts by weight of High-Alumina high-temperature flame-proof pouring material raw material, be: 70 parts of bauxites aggregates, 5 parts of superfine kaolin, 8 parts of binding agents, 12 parts of silicon powders, 2 parts of alumina powders, 3 parts, water.Wherein, at the coarse aggregate of bauxites aggregate, account for 25%, middle aggregate accounts for 45%, and fine aggregate accounts for 30%; 25 parts, binding agent mesosilicic acid magnesium, 75 parts of phosphoric acid salt, coarse aggregate size scope is 4.0～3.0mm, and middle aggregate size is 1.1～1.0mm, and fine aggregate particle diameter is 0.1～0.064mm.
(2) bauxites aggregate, superfine kaolin, silicon powder carry out premix, evenly, add binding agent, alumina powder to continue batch mixing to full and uniform, be dry mixed 5 minutes, then after adding clean water to mix 8 ~ 9 minutes, ageing mixture had both obtained boiler of power plant High-Alumina high-temperature flame-proof pouring material.
Its physical performance index is: after 110 ℃ * 24h dries, folding strength is 10 ~ 11MPa, and compressive strength is 90 ~ 100MPa; After 1100 ℃ * 3h high temperature reheating, the folding strength of sample is 40 ~ 55MPa, and compressive strength is 100 ~ 130MPa, and volume density is 6.00 ~ 8.12g/cm
3, line velocity of variation is 0.3 ~ 0.6%.
As described above, it is only preferred embodiment of the present invention, when not limiting scope of the invention process with this, the simple equivalence of generally doing according to the present patent application the scope of the claims and invention description content changes and modifies, and all still remains within the scope of the patent.
Claims (4)
1. a boiler of power plant High-Alumina high-temperature flame-proof pouring material, it is characterized in that: this boiler of power plant with High-Alumina high-temperature flame-proof pouring material by comprising that following parts by weight component makes: bauxites aggregate 60～80, superfine kaolin 5～12, binding agent 5～12, silicon powder 2～8, alumina powder 2～10, water 1～5; Wherein, in the umber of bauxites aggregate 60～80, coarse aggregate accounts for 30%～40%, and middle aggregate accounts for 35%～45%, and fine aggregate accounts for 20%～30%; Binding agent comprises that following parts by weight component makes: Magnesium Silicate q-agent 20～40, phosphoric acid salt 80～60.
2. boiler of power plant according to claim 1 High-Alumina high-temperature flame-proof pouring material, is characterized in that: phosphoric acid salt is aluminum phosphate.
3. boiler of power plant according to claim 1 High-Alumina high-temperature flame-proof pouring material, is characterized in that: coarse aggregate size scope is 4.0～2.0mm, and middle aggregate size is 1.5～1.0mm, and fine aggregate particle diameter is 0.5～0.064mm.
4. boiler of power plant according to claim 1 High-Alumina high-temperature flame-proof pouring material, is characterized in that: alumina powder is the mixing of Reactive alumina, calcining aluminium micro mist arbitrary proportion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310508055.9A CN103539468B (en) | 2013-10-25 | 2013-10-25 | High-alumina high-temperature refractory castable for power station boiler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310508055.9A CN103539468B (en) | 2013-10-25 | 2013-10-25 | High-alumina high-temperature refractory castable for power station boiler |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103539468A true CN103539468A (en) | 2014-01-29 |
| CN103539468B CN103539468B (en) | 2015-04-08 |
Family
ID=49963382
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310508055.9A Active CN103539468B (en) | 2013-10-25 | 2013-10-25 | High-alumina high-temperature refractory castable for power station boiler |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103539468B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104529485A (en) * | 2014-12-08 | 2015-04-22 | 武汉理工大学 | Double-layer composite refractory material, double-layer composite refractory material ditch cover, manufacture method for ditch cover, and application of material |
| CN105645973A (en) * | 2015-12-30 | 2016-06-08 | 宜兴市集创新材料科技有限公司 | High-strength refractory castable material |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101190850A (en) * | 2007-09-30 | 2008-06-04 | 河南省耕生耐火材料有限公司 | Pouring material for furnace wall built-in channel heat-accumulating type heating furnace |
| CN101444840A (en) * | 2007-11-27 | 2009-06-03 | 大连核心铸造技术工程研究所 | Casting powder for casting magnesium aluminum alloy |
| CN101693388A (en) * | 2009-10-16 | 2010-04-14 | 湖南华菱涟源钢铁有限公司 | Method for casting lining of blast furnace air supply device by using lost foam |
| CN102424590A (en) * | 2011-09-08 | 2012-04-25 | 大连市金州金河化工建材厂 | Ultrafine powder refractory castable |
| CN103011869A (en) * | 2013-01-10 | 2013-04-03 | 无锡市石油化工设备有限公司 | High-abrasion-resistance refractory liner material and preparation method thereof |
-
2013
- 2013-10-25 CN CN201310508055.9A patent/CN103539468B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101190850A (en) * | 2007-09-30 | 2008-06-04 | 河南省耕生耐火材料有限公司 | Pouring material for furnace wall built-in channel heat-accumulating type heating furnace |
| CN101444840A (en) * | 2007-11-27 | 2009-06-03 | 大连核心铸造技术工程研究所 | Casting powder for casting magnesium aluminum alloy |
| CN101693388A (en) * | 2009-10-16 | 2010-04-14 | 湖南华菱涟源钢铁有限公司 | Method for casting lining of blast furnace air supply device by using lost foam |
| CN102424590A (en) * | 2011-09-08 | 2012-04-25 | 大连市金州金河化工建材厂 | Ultrafine powder refractory castable |
| CN103011869A (en) * | 2013-01-10 | 2013-04-03 | 无锡市石油化工设备有限公司 | High-abrasion-resistance refractory liner material and preparation method thereof |
Non-Patent Citations (1)
| Title |
|---|
| 罗华明等: "硅微粉pH值对高铝质低水泥浇注料性能的影响", 《水泥》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104529485A (en) * | 2014-12-08 | 2015-04-22 | 武汉理工大学 | Double-layer composite refractory material, double-layer composite refractory material ditch cover, manufacture method for ditch cover, and application of material |
| CN105645973A (en) * | 2015-12-30 | 2016-06-08 | 宜兴市集创新材料科技有限公司 | High-strength refractory castable material |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103539468B (en) | 2015-04-08 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103589201B (en) | High emissivity infrared energy-conserving radiation paint and preparation method thereof | |
| CN102718514B (en) | Micropore high-strength corundum-calcium hexaluminate composite refractory raw material and preparation method thereof | |
| CN102815951B (en) | Flame-resistant corrosion-resistant coating | |
| CN103396140B (en) | High-temperature walking beam furnace beam and column insulation lining slag-adhesion-preventing coating | |
| CN106431436B (en) | Electric furnace cover castable taking aluminum-chromium slag as main material and preparation method thereof | |
| CN103880454B (en) | The fast dry type anti-explosion refractory castable that a kind of iron notch reworked material is recycled | |
| CN102731123B (en) | High-alumina high-temperature fire-resistance casting material and preparation method thereof | |
| CN103539472A (en) | Light thermal insulation refractory castable | |
| CN104355638B (en) | A kind of refractory material, its preparation method and refractory brick | |
| CN104261848A (en) | Chrome-oxide-containing mullite brick and preparation method thereof | |
| CN103539474A (en) | High-aluminum high-strength refractory castable material | |
| CN103819212B (en) | Refractory lining pouring material for incineration rotary kiln | |
| CN105084916B (en) | A kind of anticorrosive magnesium-aluminium fire resistant materials and preparation method thereof | |
| CN103449803B (en) | Quick-drying anti-explosion refractory castable | |
| CN104030709B (en) | Heating furnace high-temperature nm radiation coating and preparation technology thereof | |
| CN103342560B (en) | Heat exchanging component made of ceramic materials and preparation method thereof | |
| CN103539468B (en) | High-alumina high-temperature refractory castable for power station boiler | |
| CN104446524B (en) | Heat barrier and heat radiation complex function based aluminum oxide pouring material for saving energy in high-temperature environment | |
| CN104876609A (en) | Thermal-shock resistant refractory brick | |
| CN103951444B (en) | CFB Boiler room high-heat resistance shock resistant coating and production technique thereof | |
| CN103159490B (en) | Swinging chute working lining castable of composite material and preparation method of castable | |
| CN104140233A (en) | A 1200 DEG C grade low-iron thermally-insulating castable used for industrial furnaces and a preparing method thereof | |
| CN106045540A (en) | High-strength wearing-resistant refractory casting material | |
| CN104341169B (en) | High temperature resistant castable | |
| CN103553679A (en) | Light mullite refractory coating |
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 |