CN103539468B - High-alumina high-temperature refractory castable for power station boiler - Google Patents

High-alumina high-temperature refractory castable for power station boiler Download PDF

Info

Publication number
CN103539468B
CN103539468B CN201310508055.9A CN201310508055A CN103539468B CN 103539468 B CN103539468 B CN 103539468B CN 201310508055 A CN201310508055 A CN 201310508055A CN 103539468 B CN103539468 B CN 103539468B
Authority
CN
China
Prior art keywords
alumina
parts
aggregate
power station
refractory castable
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.)
Active
Application number
CN201310508055.9A
Other languages
Chinese (zh)
Other versions
CN103539468A (en
Inventor
穆祥
王西来
董伟胜
刘文艳
解仁
刘朝晖
苏新国
王淑娟
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
NINGXIA TIANZONG HONGGUANG COGENERATION TECHNOLOGY Co Ltd
Original Assignee
NINGXIA TIANZONG HONGGUANG COGENERATION TECHNOLOGY Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by NINGXIA TIANZONG HONGGUANG COGENERATION TECHNOLOGY Co Ltd filed Critical NINGXIA TIANZONG HONGGUANG COGENERATION TECHNOLOGY Co Ltd
Priority to CN201310508055.9A priority Critical patent/CN103539468B/en
Publication of CN103539468A publication Critical patent/CN103539468A/en
Application granted granted Critical
Publication of CN103539468B publication Critical patent/CN103539468B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

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

High-alumina high-temperature refractory castable for power station boiler
Technical field
The invention belongs to technical field of refractory materials, particularly relate to a kind of High-alumina high-temperature refractory castable for power station boiler.
Background technology
Compared with qualitative refractory product, with refractory castable be that the unshape refractory of 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, thus worldwide obtain and develop rapidly, its proportion shared in whole refractory materials is more and more higher.In the country of some refractory technologies advanced person, the output of unshape refractory is close to the output even having exceeded setting goods.Such as, the ratio that current Japanese unshape refractory output accounts for whole refractory materials reaches about 60%; The U.S. be about 50%; English, moral, 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, such as, in quality coal in cement kiln systems, has now widely applied the refractory castable of various material.
Unshape refractory by the granular of rational gradation composition and powder-material and bonding agent jointly form without being shaped and burn till direct for refractory materials.The essentially consist of unshape refractory is granular and refractory material that is powdery, according to its service requirements, can being made up of various material, in order to make these refractory materials be combined into entirety, generally all adding 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, there is conformability strong during use, can be made into firm Integral construction thing.
But its aluminium sesquioxide content of existing High-Alumina unshape refractory is general 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, the structure density of product and erosion resistance poor, and sclerosis condensation slower.Now, all kinds of with coal, electricity, oil, gas is in the energy, the high-temperature zone of high temperature kiln or the inboard wall of burner hearth (refractory wall and metallic surface) of combustion chamber all need to carry out integrated poured with unshape refractory, thicken, Bonded Repair, the particularly cast of the steel rolling furnace wall of metallurgy industry, repair, the transformation of boiler roof sealing and Thermal Power Generation Industry water-tube boiler burner hearth wall with refractory lining, refracto, the abrasionproof of abrasionproof and walling of flue around nozzles, boiler roof sealings etc. utilize common single High-Alumina unshape refractory 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, for the deficiency that the above prior art exists, there is provided that to have aluminium sesquioxide content high, can on kiln inwall the overall a kind of High-alumina high-temperature refractory castable for power station boiler forming the refractory masses that density is high, wear-resisting, high temperature resistant, erosion resistance, shock resistance are good.
A kind of High-alumina high-temperature refractory castable for power station boiler, makes by comprising following parts by weight component: 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 number 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 following parts by weight component and 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, fire box temperature 60 ~ 250 DEG C can be improved and reach 8% with raising thermo-efficiency, and burner hearth is less, cast area larger, improve furnace temperature and thermal effect benefit higher, apparatus of thermo-electric power boiler completely can de-oiling burn; 2, because aluminium sesquioxide content improves, and add silicon powder and alumina powder, the anticorrosion antiwear performance of pouring layer is improved, protection body of heater, extend body of heater and reach 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 being mixed, namely ageing mixture makes High-alumina high-temperature refractory castable for power station boiler.Concretely:
A kind of High-alumina high-temperature refractory castable for power station boiler, makes by comprising following parts by weight component: 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 number 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 following parts by weight component and makes: Magnesium Silicate q-agent 20 ~ 40, phosphoric acid salt 80 ~ 60.Wherein, bauxites aggregate, superfine kaolin, silicon powder have effect that is high temperature resistant, wear-resisting, erosion resistance, and superfine kaolin, binding agent have the effect being beneficial to construction, bonding and strengthening sticking power, can improve density and the anti-seismic performance of pouring layer entirety.
Further say: bauxites aggregate is superfine, one-level aluminium vanadine, and described superfine high-aluminium vanadine is the high-aluminium vanadine of aluminium sesquioxide content more than 85%, and 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, and middle aggregate size is 1.5 ~ 1.0mm, and 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 High-alumina high-temperature refractory castable for power station boiler:
Embodiment 1
(1) parts by weight for the preparation of High-alumina high-temperature refractory castable for power station boiler raw material are: bauxites aggregate 60 parts, superfine kaolin 10 parts, binding agent 10 parts, silicon powder 8 parts, alumina powder 10 parts, 2 parts, water.Wherein, account for 30% at the coarse aggregate of bauxites aggregate, middle aggregate accounts for 45%, and fine aggregate accounts for 25%; 20 parts, binding agent mesosilicic acid magnesium, phosphoric acid salt 80 parts, 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, binding agent, alumina powder continuation batch mixing is added to full and uniform evenly, be dry mixed 2 minutes, then add clean water mix 5 ~ 6 minutes after ageing mixture both High-alumina high-temperature refractory castable for power station boiler.
Its physical performance index is: after 110 DEG C × 24h dries, folding strength is 8 ~ 9MPa, and compressive strength is 80 ~ 90MPa; After 1100 DEG C × 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, Linear change rate is 0.1 ~ 0.6%.
Embodiment 2
(1) parts by weight for the preparation of High-alumina high-temperature refractory castable for power station boiler raw material are: bauxites aggregate 70 parts, superfine kaolin 5 parts, binding agent 8 parts, silicon powder 12 parts, alumina powder 2 parts, 3 parts, water.Wherein, account for 25% at the coarse aggregate of bauxites aggregate, middle aggregate accounts for 45%, and fine aggregate accounts for 30%; 25 parts, binding agent mesosilicic acid magnesium, phosphoric acid salt 75 parts, 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, binding agent, alumina powder continuation batch mixing is added to full and uniform evenly, be dry mixed 5 minutes, then add clean water mix 8 ~ 9 minutes after ageing mixture both High-alumina high-temperature refractory castable for power station boiler.
Its physical performance index is: after 110 DEG C × 24h dries, folding strength is 10 ~ 11MPa, and compressive strength is 90 ~ 100MPa; After 1100 DEG C × 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, Linear change rate is 0.3 ~ 0.6%.
As described above, be only preferred embodiment of the present invention, when not limiting scope of the invention process with this, the simple equivalence namely generally done 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 High-alumina high-temperature refractory castable for power station boiler, it is characterized in that: this High-alumina high-temperature refractory castable for power station boiler is made by comprising following parts by weight component: 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 number 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 following parts by weight component and makes: Magnesium Silicate q-agent 20 ~ 40, phosphoric acid salt 80 ~ 60.
2. High-alumina high-temperature refractory castable for power station boiler according to claim 1, is characterized in that: phosphoric acid salt is aluminum phosphate.
3. High-alumina high-temperature refractory castable for power station boiler according to claim 1, 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. High-alumina high-temperature refractory castable for power station boiler according to claim 1, is characterized in that: alumina powder is the mixing of Reactive alumina, calcining aluminium micro mist arbitrary proportion.
CN201310508055.9A 2013-10-25 2013-10-25 High-alumina high-temperature refractory castable for power station boiler Active CN103539468B (en)

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 CN103539468A (en) 2014-01-29
CN103539468B true 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)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104529485B (en) * 2014-12-08 2016-05-11 武汉理工大学 Two-layer compound refractory material and two-layer compound refractory material ditch cover and its manufacture method and application
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

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101190850B (en) * 2007-09-30 2010-11-24 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
CN101693388B (en) * 2009-10-16 2011-01-26 湖南华菱涟源钢铁有限公司 Method for casting lining of air-supply apparatus of blast furnace by using lost foam
CN102424590A (en) * 2011-09-08 2012-04-25 大连市金州金河化工建材厂 Ultramicro powder refractory castable
CN103011869B (en) * 2013-01-10 2014-07-09 无锡市石油化工设备有限公司 High-abrasion-resistance refractory liner material and preparation method thereof

Also Published As

Publication number Publication date
CN103539468A (en) 2014-01-29

Similar Documents

Publication Publication Date Title
CN103396140B (en) High-temperature walking beam furnace beam and column insulation lining slag-adhesion-preventing coating
CN102815951B (en) Flame-resistant corrosion-resistant coating
CN100467426C (en) Silicon carbide crusting resistant pouring material and preparation method thereof
CN102718514B (en) Micropore high-strength corundum-calcium hexaluminate composite refractory raw material and preparation method thereof
CN102329137B (en) Carbon-free alumina-magnesia unburned brick and preparation method and application thereof
CN102731123B (en) High-alumina high-temperature fire-resistance casting material and preparation method thereof
CN106431436B (en) It is a kind of using aluminium chromium slag as furnace lid castable of major ingredient and preparation method thereof
CN103539474A (en) High-aluminum high-strength refractory castable material
CN105622122B (en) A kind of ultra micro kyanite refractory casting and its application
CN103204685A (en) Abrasion-resistant and fire-resistant repairing material for membrane type water walls
CN100509704C (en) Flame-proof pouring material for hydroted alumina gas suspending roasting furnace furnace liner
CN103539468B (en) High-alumina high-temperature refractory castable for power station boiler
CN104030709B (en) Heating furnace high-temperature nm radiation coating and preparation technology thereof
CN102329143B (en) Anti-skinning unshaped refractory material made of magnesium aluminate spinel used for cement kiln and preparation method and application of anti-skinning unshaped refractory material
CN104446524B (en) Heat barrier and heat radiation complex function based aluminum oxide pouring material for saving energy in high-temperature environment
CN106187241A (en) Low creep high RUL refractory brick and its preparation method and application
CN103819212B (en) Refractory lining pouring material for incineration rotary kiln
CN105130455A (en) Anti-oxidation refractory material and preparation method thereof
CN105084916B (en) A kind of anticorrosive magnesium-aluminium fire resistant materials and preparation method thereof
CN103553679A (en) Light mullite refractory coating
CN106187236A (en) Flint clay composite refractory brick and its preparation method and application
CN106278299A (en) Andalusite composite refractory brick and its preparation method and application
CN104876609A (en) Thermal-shock resistant refractory brick
CN104876605A (en) Refractory brick for boiler
CN103880437A (en) Silicon nitride ring-forming-resistant castable and production method thereof

Legal Events

Date Code Title Description
PB01 Publication
C06 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
C14 Grant of patent or utility model