CN1094384A - Non-aqueous thermosetting refractory mortar - Google Patents
Non-aqueous thermosetting refractory mortar Download PDFInfo
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- CN1094384A CN1094384A CN 94104543 CN94104543A CN1094384A CN 1094384 A CN1094384 A CN 1094384A CN 94104543 CN94104543 CN 94104543 CN 94104543 A CN94104543 A CN 94104543A CN 1094384 A CN1094384 A CN 1094384A
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- refractory mortar
- aqueous thermosetting
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Abstract
A kind of non-aqueous thermosetting refractory mortar belongs to fire clay for building, and it is made up of (weight %) 65～75% aggregates and 25～75% wedding agents, and wherein, the chemical ingredients of aggregate (weight %) is: 80～85%SiC, 6～12%Al
2O
3, 2～10%SiO
2, 2～4%Si, 0～3%C; The chemical ingredients of wedding agent (weight %) is: 20～30% resol, 70～80% ethylene glycol, bonding strength was low when non-aqueous thermosetting refractory mortar of the present invention not only had low-temperature bake, make the refractory brick free expansion relatively of building by laying bricks or stones, bonding sharp increase during high bake does not produce a large amount of water vapors in the baker process, and anti-molten metal infiltration, advantages such as the alkali resistant erosion performance is good mainly are applicable to and build various bond type silicon carbide bricks by laying bricks or stones.
Description
The present invention relates to a kind of fire clay for building, mainly be applicable to and build various bond types (as: nitride bonded is from combination for clay combination, oxide-bonded) silicon carbide brick by laying bricks or stones.For example: build the silicon nitride combined silicon carbide blast furnace lining by laying bricks or stones, build the siliceous aluminium cell of carbonization by laying bricks or stones, build reduction zinc vertical electric furnace silicon carbide furnace dome brick or the like by laying bricks or stones.
In kilns such as iron-smelting blast furnace are built baker process after finishing by laying bricks or stones; expansion in various degree can take place because of being heated in refractory brick usually; if do not controlled; to cause liner generation bulging even come off; have a strong impact on the work-ing life of inner lining of kiln; as countermeasure; generally take the thermal expansivity of strict control refractory materials in the prior art; giving methods such as staying dilatation joint prevents liner generation bulging even comes off; however can not deal with problems fully; because the thermal expansion of refractory materials can't be eliminated fully; therefore some position can't be given again and be stayed dilatation joint in the kiln, need develop a kind of refractory mortar with property, and it is lower that this refractory mortar must possess when low-temperature bake bonding strength; and when treating that temperature is raised to a certain scope, the performance that bonding strength sharply increases.It is bonding very infirm and suitable displacement space can be arranged when low temperature so just can to satisfy refractory brick, refractory mortar again can be with the refractory brick strong bond during to high temperature, thereby avoid in the baker that the liner bulging takes place, come off etc., the work-ing life that helps improving inner lining of kiln.
At present, domestic refractory mortar generally adopts clay, and pure aluminium silicate such as high alumina are main raw material, and with water as blending agents, this class refractory mortar produces a large amount of water vapors when baker, be unfavorable for blast furnace operating.Foreign patent 1.JP63151690, CO4B35/66,2.JP63011578, among the CO4B35/66, though adopted organic bond, carborundum content (weight %) only is 5～15%, and the anti-folding bonding strength of refractory mortar does not have significant difference when low temperature and high temperature, and in anti-molten metal infiltration, alkali resistant erosion aspect can not satisfy service requirements.
The object of the present invention is to provide a kind of non-aqueous thermosetting refractory mortar.This non-aqueous thermosetting refractory mortar produces a large amount of water vapors when not only having avoided baker, and when building by laying bricks or stones kiln baker, low-temperature bake, the bonding strength of refractory mortar is low, make the Brick for building can free expansion, when temperature was raised to certain limit, the bonding strength of refractory mortar increased severely, and made itself and refractory brick strong bond.
To achieve these goals, non-aqueous thermosetting refractory mortar of the present invention is made up of aggregate and wedding agent, and its concrete chemical ingredients (weight %) is: 65～75% aggregates, 25～35% wedding agents; Wherein the chemical ingredients of aggregate is: (weight %) 80～85%SiC, 6～12%Al
2O
3, 2～10%SiO
2, 2～4%Si, 0～3%C; The chemical ingredients of wedding agent is: (weight %) 20～30% resol, 70～80% ethylene glycol.
Containing (weight %) 80～85%SiC in the aggregate of non-aqueous thermosetting refractory mortar of the present invention is in order to improve the anti-molten metal infiltration of refractory mortar, performances such as alkali resistant erosion, anti-CO, in addition, improve the content of SiC in the refractory mortar, make its heat conductivity and thermal expansivity and the silicon carbide brick of being built by laying bricks or stones approaching.
Contain (weight %) 6～12%Al in the aggregate of non-aqueous thermosetting refractory mortar of the present invention
2O
3, 2～10%SiO
2, its objective is to make to form pottery under the non-aqueous thermosetting refractory mortar high temperature of the present invention, to improve high temperature bonding intensity in conjunction with phase.
The wedding agent of non-aqueous thermosetting refractory mortar of the present invention adopts heat-reactive phenolic resin, and add a certain amount of non-aqueous organic solvent ethylene glycol, its objective is the high temperature bonding intensity that improves non-aqueous thermosetting refractory mortar of the present invention and avoid in kiln is built baker process after finishing by laying bricks or stones, producing a large amount of water vapors, influence the operation of blast furnace.
The manufacturing process of non-aqueous thermosetting refractory mortar of the present invention is as follows:
1. aggregate preparation.
In sand mill with the various compositions of aggregate according to the careful according to a certain ratio mixing of its composition range, pack standbyly, require maximum particle diameter＜100 orders of the various compositions of aggregate.
2. wedding agent preparation.
In container, resol and ethylene glycol are mixed according to a certain ratio, be stirred to evenly, the container of packing into is stand-by.
3. the preparation of non-aqueous thermosetting refractory mortar of the present invention.
Join by a certain percentage in the slurry mixer before above-mentioned two aggregates that prepare of step and wedding agent constructed at the scene, be stirred to evenly, promptly make refractory mortar of the present invention.
The non-aqueous thermosetting refractory mortar performance of the present invention of producing according to mentioned component and preparation section is as follows: 1. load softening point＞1650 ℃.
2. anti-folding bonding strength is: 110 ℃ * 24h＜1MPa,
1300 ℃ * 3h(burns the back)＞5MPa.
3. thermal expansivity (0～1200 ℃) is 3.4 * 10
-6/ ℃.
Compared with prior art, the advantage of non-aqueous thermosetting refractory mortar of the present invention is:
1. refractoriness height, i.e. load softening point＞1650 ℃.
2. anti-molten metal infiltration, alkali resistant aggressiveness and anti-CO aggressiveness are good.
3. the heat conductivity and the thermal expansivity of heat conductivity and thermal expansivity and the carbonated lime brick of being built by laying bricks or stones are approaching.Make refractory mortar engage more firm with the high temperature of laying bricks.
4. refractory mortar of the present invention has significant thermoset, promptly bonding strength is low when low-temperature bake, make the Brick for building can free expansion, for example: bonding strength＜1MPa of 110 ℃ * 24h, and temperature is when being raised to certain limit, bonding strength increases severely, and makes refractory brick and non-aqueous thermosetting refractory mortar of the present invention produce strong bond, and for example: 1300 ℃ * 3h(burns the back) bonding strength＞5MPa.
5. workability is good, because the wedding agent that adopts is a non-aqueous solvent, produces a large amount of water vapors when avoiding baker, is convenient to blast furnace operating, is specially adapted to give the position of building by laying bricks or stones of staying dilatation joint.
Embodiment
The chemical ingredients scope of non-aqueous thermosetting refractory mortar according to the present invention has been prepared three batches of non-aqueous thermosetting refractory mortars, the concrete chemical ingredients such as the table 1 of three batches of non-aqueous thermosetting refractory mortars.Wherein, the concrete chemical ingredients such as the table 2 of three batches of non-aqueous thermosetting refractory mortar aggregates, the concrete chemical ingredients such as the table 3 of three batches of non-aqueous thermosetting refractory mortar wedding agents.More than three batches of non-aqueous thermosetting refractory mortars press GB5024.3-85, GB7317-87 measures its anti-folding bonding strength such as table 4.
The concrete chemical ingredients (weight %) of table 1 embodiment non-aqueous thermosetting refractory mortar
| The composition lot number | Aggregate | Wedding agent |
| 1 2 3 | 72 68 70 | 28 32 30 |
The concrete chemical ingredients (weight %) of the aggregate of table 2 embodiment non-aqueous thermosetting refractory mortar
| The composition lot number | SiO | Al 2O 3 | SiO 2 | C | Si |
| 1 2 3 | 81 85 82 | 8.5 6.5 7.1 | 6.5 6.5 6.0 | 2 / 2 | 2 2 2 |
The concrete chemical ingredients (weight %) of the wedding agent of table 3 embodiment non-aqueous thermosetting refractory mortar
The anti-folding bonding strength of table 4 embodiment non-aqueous thermosetting refractory mortar
Embodiment 2.
Produce in batches, and be used for China 4635M for the 3rd batch in three batches of non-aqueous thermosetting refractory mortars of the present invention of embodiment 1 preparation
3Building by laying bricks or stones of the silicon nitride combined silicon carbide of large blast furnace, result of use is good, and performance index reach re-set target.
Claims (1)
1, a kind of non-aqueous thermosetting refractory mortar is characterized in that chemical ingredients (weight %) is:
A. aggregate: 65～75%, wedding agent: 25～75%;
B. wherein, the chemical ingredients of aggregate (weight %) is: 80～85%SiC, 6～12%Al
2O
3, 2～10%SiO
2, 2～4%Si, 0～3%C;
C. wherein, the chemical ingredients of wedding agent (weight %) is: 20～30% resol, 70～80% ethylene glycol.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN94104543A CN1048970C (en) | 1994-05-03 | 1994-05-03 | Non-aqueous thermosetting refractory mortar |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN94104543A CN1048970C (en) | 1994-05-03 | 1994-05-03 | Non-aqueous thermosetting refractory mortar |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1094384A true CN1094384A (en) | 1994-11-02 |
| CN1048970C CN1048970C (en) | 2000-02-02 |
Family
ID=5031661
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN94104543A Expired - Fee Related CN1048970C (en) | 1994-05-03 | 1994-05-03 | Non-aqueous thermosetting refractory mortar |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1048970C (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1086682C (en) * | 1999-05-28 | 2002-06-26 | 冶金工业部钢铁研究总院 | Fire clay for building blast furnace |
| CN100372796C (en) * | 2005-11-18 | 2008-03-05 | 郑州华宇耐火材料有限公司 | Composite silicon brick |
| CN102438965A (en) * | 2009-05-11 | 2012-05-02 | 埃尔凯姆碳有限公司 | Glue and coating for refractory materials and ceramics |
| CN106348769A (en) * | 2016-08-27 | 2017-01-25 | 中冶武汉冶金建筑研究院有限公司 | Silicon carbide buffer mud for blast furnace buffer seams |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1012431B (en) * | 1987-05-13 | 1991-04-24 | 抚顺市耐火材料厂 | Refractory clay with low thermal conductivity and its producing process |
| CN1070899A (en) * | 1992-07-07 | 1993-04-14 | 湖南省醴陵电瓷厂 | High-strength indefinite form refractory material |
-
1994
- 1994-05-03 CN CN94104543A patent/CN1048970C/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1086682C (en) * | 1999-05-28 | 2002-06-26 | 冶金工业部钢铁研究总院 | Fire clay for building blast furnace |
| CN100372796C (en) * | 2005-11-18 | 2008-03-05 | 郑州华宇耐火材料有限公司 | Composite silicon brick |
| CN102438965A (en) * | 2009-05-11 | 2012-05-02 | 埃尔凯姆碳有限公司 | Glue and coating for refractory materials and ceramics |
| CN102438965B (en) * | 2009-05-11 | 2014-12-17 | 埃尔凯姆碳有限公司 | Glue and coating for refractory materials and ceramics |
| CN106348769A (en) * | 2016-08-27 | 2017-01-25 | 中冶武汉冶金建筑研究院有限公司 | Silicon carbide buffer mud for blast furnace buffer seams |
| CN106348769B (en) * | 2016-08-27 | 2019-07-12 | 中冶武汉冶金建筑研究院有限公司 | A kind of silicon carbide buffering mud for blast furnace buffering seam |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1048970C (en) | 2000-02-02 |
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