CN1102165C - High-strength quick-solidifying refractory adhesive - Google Patents

High-strength quick-solidifying refractory adhesive Download PDF

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CN1102165C
CN1102165C CN99114402A CN99114402A CN1102165C CN 1102165 C CN1102165 C CN 1102165C CN 99114402 A CN99114402 A CN 99114402A CN 99114402 A CN99114402 A CN 99114402A CN 1102165 C CN1102165 C CN 1102165C
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binding agent
adhesive
portions
parts
coke oven
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CN1246507A (en
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蒋德奎
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Abstract

The present invention relates to a high temperature adhesive of an inorganic component. The adhesive is prepared from 30 to 75 portions of high aluminium powder, 5 to 15 portions of Guangxi clay, 2 to 10 portion of superfine powder, 1 to 1.5 portions of sodium hexametaphosphate and 15 to 50 portions of water glass; the refractability of the adhesive is high, and the maximum service temperature can reach 1800 DEG C; the adhesive has the advantages of high adhesion strength, high pressure resistance, no shrinkage, cracking or desquamation at a high temperature, chemical corrosion resistance, less setting time and convenient construction and is suitable for the repair and the spray coating of coke oven resistant materials.

Description

High-strength quick-solidifying refractory adhesive
Technical field
The present invention relates to a kind of high-temperature agglomerant of inorganic components, be applicable to the repairing and the spraying of the anti-material of coke oven.
Technical background
Refractory mortar is the indispensable joint filler of fire-resistant anvil masonry, in coke oven, it is the same with refractory masonry, not only to bear gas, molten hot metal, molten steel and slag erosion, wash away, and want the rapid variation of adaptive temperature, this just needs refractory mortar to have and the close technical feature of fire-resistant anvil masonry, and can be in aggregates fire-resistant anvil bonding, make masonry possess good resistance to abrasion, crushing resistance, erosion resistance, guarantee that coke oven normally moves.Past, general refractory mortar was made up of grog refractory fine powder and fire-resistant raw clay, although it is cheap, but because size-grade distribution is unreasonable, raw clay add-on height, do not have reasons such as adding the knot agent, the various performances of refractory mortar are undesirable, and cohesive strength is poor, refractoriness is on the low side, and obscission is serious in the use.In order to improve the performance of refractory mortar, improve its refractoriness, in enclose patent CN1078983A and disclose a kind of high-temperature agglomerant, its recipe ingredient is 50~100 parts of high-alumina flies, 0~20 part of phosphatase 11, on the high mountain range 30~60 parts, 10~25 parts in water can be implemented in normal construction under the envrionment temperature more than 1100 ℃.Though this binding agent can at high temperature be operated, still exist not enough, the one, this binding agent uses water as solvent, comes off easily in the use, cohesiveness is bad, during construction rapid hardening not good, rebound degree is difficult to spray repair more than 30%; The 2nd, contain phosphoric acid in the prescription, make binding agent become acid, only be applicable to the kiln of building by laying bricks or stones, because acid-base neutralisation is not suitable for resembling this stove of being built by laying bricks or stones by alkaline material of coke oven by acid material.
Summary of the invention
The present invention provides a kind of refractoriness height just in order to overcome above-mentioned deficiency, does not shrink under the high temperature, does not ftracture, does not come off, wear-resisting, resistance to chemical attack, cohesive strength, ultimate compression strength height, rapid solidification, the binding agent of being convenient to construct.
Prescription of the present invention contains following component:
High-alumina fly Al 2O 3〉=70%, Fe 2O 3≤ 2% 30-75 part
Guangxi mud Al 2O 3〉=35%, Fe 2O 3≤ 0.9% 5-15 part
Ultrafine powder Al 2O 3〉=80%, Fe 2O 3≤ 1.5% 2-10 part
Sodium hexametaphosphate 99 1-1.5 part
Water glass 15-50 part
In the prescription, the granularity of high-alumina fly, Guangxi mud all requires below 0.1mm, can guarantee that particle is evenly distributed in solvent, and particle is thin more, and the compactness of binding agent is high more, and cohesive strength is big more; Particle is thin more, and the line velocity of variation of binding agent is more little, and thermostability is good more, does not shrink under the high temperature, does not ftracture, does not come off.
Al 2O 3Can bear high temperature, the refractoriness of binding agent is played a major role; Fe 2O 3The line velocity of variation that how much directly influences binding agent of content, Fe 2O 3Content is many, and binding agent at high temperature easily shrinks, and causes cracking, obscission.Therefore, binding agent should have higher Al on the whole 2O 3Content, lower Fe 2O 3Content.High-alumina fly more than 30 parts can be guaranteed Al in the binding agent 2O 3Content requirement, Al 2O 3Content big more, the temperature that can bear is high more, resistivity against fire is good more, but the content of high-alumina fly again can not be too many, because a material component concentration is many more, it is difficult for being evenly distributed in solvent more, and the binding agent denseness that generates is too big, is unfavorable for construction, and, too many high-alumina fly can be brought more Fe into to binding agent 2O 3, increasing the line velocity of variation, the maximum umber of high-alumina fly should be controlled at below 75 parts.Owing to still contain Fe on the high side relatively in the high-alumina fly 2O 3, therefore in prescription, add an amount of Guangxi mud, to reduce Fe in the binding agent 2O 3Content, but the amount again can not be too many because the Guangxi Fender can reduce Fe 2O 3Outside the content, also can reduce the Al in the binding agent simultaneously 2O 3Content influences refractoriness, in addition, considers that Guangxi mud price is higher, and therefore, the Guangxi mud component in the prescription generally is positioned at 5~15 parts.Guangxi mud can also effectively be promoted the cohesive strength of binding agent under the effect of water glass.Ultrafine powder in the prescription is because its granularity is superfine, common granularity<<0.1mm, when the binding agent solidification forming, the ultrafine powder that is evenly distributed can be infiltrated the space of tiny material, make the compactness of whole masonry very high, reach airtight, do not ooze steel, thereby anti-folding, ultimate compression strength increase, simultaneously owing to Al in the ultrafine powder 2O 3Content surpasses 80%, can prevent that also Guangxi mud from adding Al in the binding agent that causes 2O 3The refractoriness of binding agent is guaranteed in the minimizing of content; 2~10 parts ultrafine powder can satisfy this requirement, and is too many if ultrafine powder adds, and not only can increase Fe 2O 3Content, influence the line velocity of variation, cause cost to improve again.A spot of Sodium hexametaphosphate 99 can also play lubricated densification except can absorbent binder the moisture content in the agent, lubricatedly can make the easier infiltration particle voids of ultrafine powder, and therefore, Sodium hexametaphosphate 99 plays an important role to anti-folding, the ultimate compression strength of binding agent; Another vital role of Sodium hexametaphosphate 99 is to cooperate with water glass, can accelerate solidifying of binding agent, and spraying back only needs 1~2 from clock solidification forming fully just, has improved the cohesive strength of binding agent.Water glass has advantages of good caking property, and therefore energy rapid coagulation simultaneously selects water glass to make solvent, guarantees the whole cohesive force of binding agent on the one hand, guarantees the rapid hardening of binding agent on the other hand.Just because of its powerful cohesive force and rapid hardening, binding agent is in when construction, and no rebound degree, but both convenient constructions have been saved material again greatly.Different because of execution conditions and mode, the denseness that binding agent adopts is also different, its rare thick how many controls of content by water glass, generally between 15~50 parts, select to get final product, be lower than 15 parts, form and be difficult for dispersion, do not reach uniform distribution, influence cohesiveness and rapid hardening simultaneously; Surpass 50 parts, cause aluminum oxide powder content on the low side, influence refractoriness.
In the component of this binding agent, also can add a spot of tripoly phosphate sodium STPP, its component is no more than 1, and tripoly phosphate sodium STPP is further strengthened lubrication, makes ultrafine powder fill up particle space easily, improves the density of binding agent.
It is neutral that the binding agent of said components, its potential of hydrogen are, and the anti-material of coke oven is alkalescence, for make binding agent on performance more near the refractory materials of coke oven, can in prescription, add and be less than or equal to 2 parts silicon powder, its granularity is below 0.1mm.The adding of minor amount of silicon micro mist, the potential of hydrogen of having regulated binding agent makes the binding agent meta-alkalescence, and anti-material of coke oven and binding agent have just had affinity preferably like this, more help bonding.
Binding agent refractoriness height of the present invention, maximum operation (service) temperature can reach 1800 ℃, cohesive strength is big, and anti-pressure ability is strong, does not shrink under the high temperature, does not ftracture, does not come off, particularly can sustain the drastic change of temperature, wear-resisting, resistance to chemical attack have good volume stability and thermostability, and time of coagulation is fast, easy construction, its concrete physicochemical property is referring to table one.
The physicochemical property contrast of table one the present invention and clay
Figure C9911440200041
Refractoriness ℃ 〉= 1650 1790 1790 1800
Maximum operation (service) temperature ℃ 1300 1600 1700 1790
Component concentration of the present invention is: 35 parts of high-alumina flies, 10 parts of Guangxi mud, 5 parts of ultrafine powders, 1 part of Sodium hexametaphosphate 99,1 part of tripoly phosphate sodium STPP, 3 parts of silicon powders, 45 parts of water glass.
Have above-mentioned performance just because of this binding agent, it is specially adapted to the anti-material of this special stove of coke oven and repairs and spraying.
In the iron and steel system of China, coke oven is with a long history, and body of heater is huge, the immanent structure complexity, and dismounting coke oven upkeep cost money is huge, inadvisable.During maintenance, with general binding agent, refractoriness is on the low side, obscission often occurs, duration of service is short, particularly on the fire-resistant gas pipe of coke oven, if the cohesive body crack of tube and tube seam crossing or come off,, lose huge with a large amount of leakages of the coal gas that causes coke oven to produce.In addition, when repairing the anti-material of coke oven with general binding agent, need put out furnace operating usually, directly influence is produced, and adopts spraying, is subjected to the binding agent Effect on Performance, construction inconvenience.
Just because of high strong cohesive property, rapid hardening, the resistivity against fire that binding agent of the present invention has, just be specially adapted to the repairing and the spraying of this complicated stove of coke oven.Spraying is generally adopted in maintenance to the anti-material of coke oven, during construction, need not to stop production, stretch in the body of heater as long as the spray gun of this binding agent directly will be housed, spray from top to down, binding agent one ejection in required repairing position, just on masonry or tube wall, solidify rapidly at once, rebound degree is zero, and the masonry after the spraying, tube wall are all sealed rapidly, and the surface is straight and even smooth.Coke oven after spraying does not ftracture in sintering process, does not shrink, does not come off, and has good volume stability and thermostability, and anti-pressure ability is strong, wear-resisting, resistance to chemical attack, and duration of service is long, has improved production efficiency, has reduced energy consumption.
Embodiment
Embodiment 1, with 50 parts of granularities high-alumina fly (Al that is 0.088mm 2O 3〉=70%, Fe 2O 3≤ 2%) 5 parts of Guangxi mud (Al that granularity is 0.088mm, 2O 3〉=35%, Fe 2O 3≤ 0.9%), 5 parts of ultrafine powders (granularity<<0.1mm, Al 2O 3〉=80%, Fe 2O 3≤ 1.5%), 1 part of Sodium hexametaphosphate 99 drops into agitator and stirs evenly, and adds 39 parts of water glass again, stirs, and the binding agent of gained is thicker, can be used for the anti-material of coke oven and repairs.
Embodiment 2, with 35 parts of granularities high-alumina fly (Al that is 0.088mm 2O 3〉=70%, Fe 2O 3≤ 2%) 10 parts of Guangxi mud (Al that granularity is 0.088mm, 2O 3〉=35%, Fe 2O 3≤ 0.9%), 5 parts of ultrafine powders (granularity<<0.1mm, Al 2O 3〉=80%, Fe 2O 3≤ 1.5%), 1 part of Sodium hexametaphosphate 99,1 part of tripoly phosphate sodium STPP, 3 parts of silicon powders drop into agitators and stir evenly, and adds 45 parts of water glass again, stirs, the binding agent of gained is rarer, can be used for the spraying at the anti-material of coke oven position.

Claims (5)

1. high-strength quick-solidifying refractory adhesive is characterized in that containing in the prescription:
High-alumina fly Al 2O 3〉=70%, Fe 2O 3≤ 2% 30-75 part
Guangxi mud Al 2O 3〉=35%, Fe 2O 3≤ 0.9% 5-15 part
Ultrafine powder Al 2O 3〉=80%, Fe 2O 3≤ 1.5% 2-10 part
Sodium hexametaphosphate 99 1-1.5 part
Water glass 15-50 part
2. binding agent according to claim 1, the granularity of high-alumina fly, Guangxi mud is below 0.1mm in it is characterized in that filling a prescription.
3. binding agent according to claim 1 is characterized in that containing 0~1 part tripoly phosphate sodium STPP.
4. according to claim 1 or 3 described binding agents, it is characterized in that containing 0~2 part silicon powder.
5. binding agent according to claim 4, the granularity that it is characterized in that silicon powder is below 0.1mm.
CN99114402A 1999-08-23 1999-08-23 High-strength quick-solidifying refractory adhesive Expired - Fee Related CN1102165C (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103242746A (en) * 2013-05-22 2013-08-14 苏州市丛岭胶粘剂有限公司 Modified fireproof adhesive and preparation method thereof

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102924093B (en) * 2011-08-12 2015-01-21 上海梅山钢铁股份有限公司 Filler suitable for repairing brick joints of coke oven
CN105645972A (en) * 2015-12-30 2016-06-08 宜兴市集创新材料科技有限公司 Refractory binder
CN111925733A (en) * 2020-07-28 2020-11-13 河南凌阳耐磨材料有限公司 High-strength wear-resistant high-temperature-resistant daub for rapid repair and preparation method thereof
CN113880556A (en) * 2021-11-19 2022-01-04 重庆鸽牌电瓷有限公司 Special adhesive for electric porcelain rod-shaped firing

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN87101565A (en) * 1987-06-04 1988-12-21 本溪钢铁公司 Metal mold coating for centrifugal casting
CN1078983A (en) * 1993-04-26 1993-12-01 河北省新乐市特种化工厂 A kind of high-temperature agglomerant and application thereof
CN1082466A (en) * 1993-02-15 1994-02-23 大连冷冻机厂 Resin sand mould (core) or cast part type (core) is used water based paint

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN87101565A (en) * 1987-06-04 1988-12-21 本溪钢铁公司 Metal mold coating for centrifugal casting
CN1082466A (en) * 1993-02-15 1994-02-23 大连冷冻机厂 Resin sand mould (core) or cast part type (core) is used water based paint
CN1078983A (en) * 1993-04-26 1993-12-01 河北省新乐市特种化工厂 A kind of high-temperature agglomerant and application thereof

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103242746A (en) * 2013-05-22 2013-08-14 苏州市丛岭胶粘剂有限公司 Modified fireproof adhesive and preparation method thereof
CN103242746B (en) * 2013-05-22 2014-06-18 苏州市丛岭胶粘剂有限公司 Modified fireproof adhesive and preparation method thereof

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