CN1161301C - Refractory mixture for lining of repair gunite capable of diving in molten iron - Google Patents
Refractory mixture for lining of repair gunite capable of diving in molten iron Download PDFInfo
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- CN1161301C CN1161301C CNB011388633A CN01138863A CN1161301C CN 1161301 C CN1161301 C CN 1161301C CN B011388633 A CNB011388633 A CN B011388633A CN 01138863 A CN01138863 A CN 01138863A CN 1161301 C CN1161301 C CN 1161301C
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- mixture
- spray gun
- molten iron
- refractory
- refractory mixture
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- Furnace Housings, Linings, Walls, And Ceilings (AREA)
Abstract
The present invention relates to a refractory mixture for repairing a gun lining of a spray gun capable of diving in molten iron, which comprises mullite corundum clinker, high alumina clay, water, refractory clay, and a processing product of kerosene catalysis cracking and diesel oil distillation, such as purified hydrocarbyl arylsulphonate, a phosphate adhesive, silicon carbide, water glass, etc. The present invention can enhance the plasticity of the refractory mixture, enlarge the depth formed by the refractory mixture soaked into the cracks of the gun lining, and prolong the service life of the diving-type spray gun.
Description
Technical field: the invention belongs to the ferrous metallurgy category, belong to specifically among the refractory mixture classification, when in hot metal ladle, carrying out handling outside the stove with blowing process, be used for repairing the submerged type spray gun by spray gun.
Background technology: the purposes of spray gun is that Powdered reagent is sent into molten iron, such as, be that desulfurizing iron will use spray gun with compressed gas spray method winding-up powdery magnesia mixture.When handling with 300t and the above large vol hot metal ladle of 300t, the working conditions of spray gun is very severe.Singly blowing particle magnesium stove, to handle the spray gun that molten iron uses outward be quite heavy fire resistive material product, and diameter is more than 250～400mm, and length reaches 5m.Spray gun slips into about the about 3m of the degree of depth of molten iron even is darker, is standing shake, beats, swings and is impacting, and seethed with excitement in wrap surging molten iron and slag wash away and denuding.The result is forming some rather serious breakages on the rifle lining after each winding-up, shows as in the rifle lining a large amount of crackles to occur, and these crackles need place under repair under the arduous labor condition while hot.Refractory mixture should have extra high intensity when therefore, repairing the rifle lining.
Technical to address this problem the component that the most approaching a kind of known refractory mixture contains as follows, % (weight)
Mullite corundum 58～70
High alumina cement 18～24
Water surplus
But known this refractory mixture does not have enough plasticity-, in fact can not be penetrated into the rifle lining upward goes in the formation crackle, because the steadiness of mixture is not enough under dampness, usually can not on the vertical surface of spray gun, glue steady and under the landing, be coated onto also being not easy to powder and hanging down on the rifle lining, can not guarantee to cover the crackle network, thereby also just can not guarantee the repairing position of spray gun and even the necessary strength of whole spray gun with the above thickness one deck of 2～3mm refractory mixture.When repairing the rifle lining, there is the refractory mixture of half to be scattered approximately, powder falls and landing is got off and without redemption having lost from the vertical surface of spray gun.
Summary of the invention: purpose of the present invention---strengthen the plasticity-of refractory mixture, strengthen its degree of depth of infiltrating rifle lining crackle and the life-span of improving the submerged type spray gun.
Contain fireclay if be used for repairing in the refractory mixture of rifle lining again except that mullite corundum grog, high alumina cement, and each component according to a certain ratio, then set objective can reach.The each component proportioning is as follows, % (weight):
Mullite corundum grog 65～85
High alumina cement (contains Al
2O
3〉=70%) 2～25
Fireclay 3～20
Water is beyond 100% 4～20
Mullite corundum grog, high-alumina cement and fireclay all adopt Powdered material.
In said mixture is formed, add fireclay, combine, at first can guarantee to improve the plasticity-of mixture and strengthen the degree of depth that its infiltration spray gun waits to repair position rifle lining crackle with high-alumina cement and water.Such as, known mixture can be infiltrated 1～2mm in the 3mm broad slit, and the mixture of being advised then can infiltrate 7～8mm.It is higher that this has just guaranteed to seal quality when the rifle lining is repaired, and makes the aliquation and the pit that form in the rifle lining fill more fully, thereby make the mixture layer and the rifle lining that are coated with up adhere better, and interlock gets more firm.Fireclay should be added in the mixture with powder morphology.
This mixture that uses of advising, because the plasticity height, intensity is big under dampness, is added to the rifle that is subjected to the crackle network impairment easily and serves as a contrast surperficial position and get on, thickness is much thicker than known mixture.This mixture such as suggestion can have the thick one deck of 70～80mm to be coated onto and to be firmly held on vertical surface of spray gun, and the thickness of known mixture layer can only have 2～3mm.If the known mixture thick coating will be scattered from the vertical surface of spray gun, powder falls and landing is got off.
Since these advantages are arranged, longer with spray gun position and even whole service life of lance that the mixture of suggestion is repaired.Such as, be coated with and used 12～16 winding-up heats behind this mixture layer, also have mixture layer and remain, and, do not guarantee the necessary life-span of spray gun with being no more than 2 heats after the known mixture coating.
In forming with refractory mixture, spray gun lining disclosed in this invention added catalytic pyrolysis kerosene---the processing product (such as the alkylaryl sulfonate of purifying) of diesel oil distillate, should meet the following requirements, %: the surface-active substance monosulfonate is no less than 45, sodium sulfate is not more than 4, soda is not more than 3, can not be not more than 1 by sulfonated bodies, additional amount 0.01～5% is (outside 100%, weight percentage), can replenish plasticity and the movability that strengthens mixture, increase the degree of depth of inserting crackle and prolong the work-ing life of repairing back rifle lining.In addition, this also can make the vitality time span of performance (keep) of mixture and the suitable time limit of using improve 1～2 times when repairing under the dampness.The alkylaryl sulfonate of purifying is a kind of liquid, can be dissolved in the water fully.
In the refractory mixture of spray gun lining usefulness disclosed in this invention, add phosphate binder (such as aluminium chromium phosphate binder) 2～7% (weight, outside 100%) combine with fireclay, can improve the intensity of mixture greatly, thereby correspondingly improve its winding-up life-span.
In spray gun disclosed in this invention lining is formed with refractory mixture, add 10～25% silicon carbide (weight percentage, 100% outside), can significantly improve the antiscour intensity that the rifle lining is repaired the position, thus the life-span of improving whole spray gun.
In forming with refractory mixture, spray gun lining disclosed in this invention adds 3～7% (weight, outside 100%) modulus be 2.2～3.0 soda glass water, combine with fireclay and phosphate binder, can replenish raising rifle lining repairing position is in the intensity of whole spray gun and the life-span of antiscour.
The disclosed above-mentioned liquid component pre-mixing of invention, can get rid of the possibility that liquid component plays interlayer, improve the absorption situation of each component and make it in whole mixture compositing range, to be evenly distributed, thereby improve the quality of mixture.
For repairing the refractory mixture that on-site preparation is advised at spray gun, need the little mixed equipment of pinching is installed, be similar to concrete mixer, its capacity is decided on the repairing consumption of refractory mixture.
Embodiment: a kind of spray gun that can dive into molten iron is repaired the refractory mixture of rifle lining usefulness, preparation as follows:
Connect the mixed kneading machine of concrete mixer type, in the following order the Powdered each component of mixture is added wherein: mullite corundum, fireclay, silicon carbide, stir 1～3 minute until making homogenizing mixture.
At this moment also at the solution of preparing each liquid component of mixture, quantity as mentioned above, be injected in the refractory materials powdered mixture after mixing stirring meticulously, afterwards refractory mixture powder and liquid component thereof were stirred 2～3 minutes, until the mixture that obtains homogeneous, prevent to mix pinch less than siccative exist.
The mixture of getting ready takes out from kneading machine and puts into chamber, covers cellophane film (glassine paper) and directly delivers to repairing spray gun station.Mixture is coated with up when spray gun is surperficial also warm, preferably spends 15～20 minutes from molten iron after spray gun proposes and applies, and spending 5～10 minutes will parch, and at this moment spray gun promptly can be used for next heat winding-up.This compound also can apply on the abundant in the past cooled spray gun fully.
Adopt this refractory mixture advised winding-up on-the-spot to diving (molten iron) formula spray gun in the place under repair of the gap of twice winding-up, not only improved greatly the life-span of spray gun, and significantly improved the equipment sparing ability of desulfurizer.
Claims (7)
1, a kind of spray gun that can dive into molten iron is repaired the refractory mixture of rifle lining usefulness, comprises mullite corundum grog, high alumina cement and water, it is characterized in that mixture contains fireclay,
Proportionlity between each component is as follows, %
Mullite corundum grog 65-85
Contain Al2O3 and be no less than 70% high alumina cement 2-25
Fireclay 3-20
Water, 4-20 beyond 100%.
2, the spray gun that can dive into molten iron according to claim 1 is repaired the refractory mixture of rifle lining usefulness, it is characterized in that it also contains catalytic pyrolysis kerosene in addition--and the processing product of-diesel oil distillate, content are 0.01-5%, outside 100%, weight percentage.
3, the spray gun that can dive into molten iron according to claim 2 is repaired the refractory mixture of rifle lining usefulness, it is characterized in that described catalytic pyrolysis kerosene--the alkylaryl sulfonate of processing product for purifying of-diesel oil distillate, alkylaryl sulfonate after the purification meets the following requirements %:
Surface-active substance-sulfonate is no less than 45
Sodium sulfate is not more than 4
Soda is not more than 3
Can not sulfonated bodies, be not more than 1.
4, the spray gun that can dive into molten iron according to claim 1 and 2 is repaired the refractory mixture of rifle lining usefulness, it is characterized in that also containing phosphate binder, and content 2-7% is outside 100%.
5, the spray gun that can dive into molten iron according to claim 4 is repaired the refractory mixture of rifle lining usefulness, it is characterized in that described phosphate binder is an aluminium chromium phosphate binder.
6, mixture according to claim 1 and 2 is characterized in that it also contains the silicon carbide of 10-25% weight in addition, beyond 100%.
7, mixture according to claim 1 and 2 is characterized in that also replenishing that to contain modulus be 2.2～3.0 water glass, and content is beyond 3～7%, 100%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB011388633A CN1161301C (en) | 2001-12-20 | 2001-12-20 | Refractory mixture for lining of repair gunite capable of diving in molten iron |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB011388633A CN1161301C (en) | 2001-12-20 | 2001-12-20 | Refractory mixture for lining of repair gunite capable of diving in molten iron |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1364742A CN1364742A (en) | 2002-08-21 |
| CN1161301C true CN1161301C (en) | 2004-08-11 |
Family
ID=4674815
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB011388633A Expired - Fee Related CN1161301C (en) | 2001-12-20 | 2001-12-20 | Refractory mixture for lining of repair gunite capable of diving in molten iron |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1161301C (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6964516B2 (en) * | 2004-02-11 | 2005-11-15 | Heraeus-Electro Nite International N.V. | Device and method for measuring temperature in molten metals |
| CN1293217C (en) * | 2004-07-07 | 2007-01-03 | 刘东业 | Magnesia mixture lance for hot metal desulfurization |
| CN101445379B (en) * | 2008-12-19 | 2011-08-24 | 周建国 | Dedicated pouring material for cement kiln outlet and jetting coal pipe and preparation method thereof |
-
2001
- 2001-12-20 CN CNB011388633A patent/CN1161301C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN1364742A (en) | 2002-08-21 |
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Legal Events
| Date | Code | Title | Description |
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| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Yingkou Dongbang Metallurgical Refractory Co., Ltd. Assignor: Liu Dongye Contract fulfillment period: 2005.8.11 to 2010.8.10 contract change Contract record no.: 2008210000051 Denomination of invention: Refractory mixture for lining of repair gunite capable of diving in molten iron Granted publication date: 20040811 License type: Exclusive license Record date: 2008.11.5 |
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| LIC | Patent licence contract for exploitation submitted for record |
Free format text: EXCLUSIVE LICENSE; TIME LIMIT OF IMPLEMENTING CONTACT: 2005.8.11 TO 2010.8.10; CHANGE OF CONTRACT Name of requester: YINGKOU DONGBANG METALLURGY EQUIPMENT REFRACTORIES Effective date: 20081105 |
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| EC01 | Cancellation of recordation of patent licensing contract |
Assignee: Yingkou Dongbang Metallurgical Refractory Co., Ltd. Assignor: Liu Dongye Contract record no.: 2008210000051 Date of cancellation: 20110704 |
|
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Yingkou Dongbang Metallurgical Refractory Co., Ltd. Assignor: Liu Dongye Contract record no.: 2011210000088 Denomination of invention: Refractory mixture for lining of repair gunite capable of diving in molten iron Granted publication date: 20040811 License type: Exclusive License Open date: 20020821 Record date: 20110704 |
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| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20040811 Termination date: 20131220 |