CN105367098A - Converter bedding face repair material - Google Patents
Converter bedding face repair material Download PDFInfo
- Publication number
- CN105367098A CN105367098A CN201510888878.8A CN201510888878A CN105367098A CN 105367098 A CN105367098 A CN 105367098A CN 201510888878 A CN201510888878 A CN 201510888878A CN 105367098 A CN105367098 A CN 105367098A
- Authority
- CN
- China
- Prior art keywords
- converter
- repair material
- large face
- face repair
- follows
- 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.)
- Pending
Links
- 230000008439 repair process Effects 0.000 title claims abstract description 62
- 239000000463 material Substances 0.000 title claims abstract description 58
- CPLXHLVBOLITMK-UHFFFAOYSA-N Magnesium oxide Chemical compound [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 claims abstract description 40
- 239000000203 mixture Substances 0.000 claims abstract description 22
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 claims abstract description 22
- 239000007788 liquid Substances 0.000 claims abstract description 21
- 239000000395 magnesium oxide Substances 0.000 claims abstract description 20
- 239000002994 raw material Substances 0.000 claims abstract description 18
- 238000000034 method Methods 0.000 claims abstract description 15
- 238000007599 discharging Methods 0.000 claims abstract description 4
- 238000004806 packaging method and process Methods 0.000 claims abstract description 4
- 238000003756 stirring Methods 0.000 claims abstract description 4
- 239000001095 magnesium carbonate Substances 0.000 claims description 18
- ZLNQQNXFFQJAID-UHFFFAOYSA-L magnesium carbonate Chemical compound [Mg+2].[O-]C([O-])=O ZLNQQNXFFQJAID-UHFFFAOYSA-L 0.000 claims description 18
- 229910000021 magnesium carbonate Inorganic materials 0.000 claims description 18
- 235000014380 magnesium carbonate Nutrition 0.000 claims description 18
- 229910004298 SiO 2 Inorganic materials 0.000 claims description 12
- 235000019580 granularity Nutrition 0.000 claims description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 4
- 238000005245 sintering Methods 0.000 abstract description 9
- 230000008569 process Effects 0.000 abstract description 6
- 239000000779 smoke Substances 0.000 abstract description 2
- 231100000331 toxic Toxicity 0.000 abstract description 2
- 230000002588 toxic effect Effects 0.000 abstract description 2
- 239000004115 Sodium Silicate Substances 0.000 abstract 4
- 229910052911 sodium silicate Inorganic materials 0.000 abstract 4
- 239000011230 binding agent Substances 0.000 abstract 1
- 238000007580 dry-mixing Methods 0.000 abstract 1
- 238000002156 mixing Methods 0.000 abstract 1
- 238000005303 weighing Methods 0.000 abstract 1
- 229910000831 Steel Inorganic materials 0.000 description 7
- 239000000853 adhesive Substances 0.000 description 7
- 230000001070 adhesive effect Effects 0.000 description 7
- 239000007767 bonding agent Substances 0.000 description 7
- 239000010959 steel Substances 0.000 description 7
- 230000036541 health Effects 0.000 description 6
- 239000007858 starting material Substances 0.000 description 6
- 230000003628 erosive effect Effects 0.000 description 5
- 238000002360 preparation method Methods 0.000 description 5
- 230000007613 environmental effect Effects 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- -1 proportion Substances 0.000 description 4
- 230000001627 detrimental effect Effects 0.000 description 3
- 239000001301 oxygen Substances 0.000 description 3
- 229910052760 oxygen Inorganic materials 0.000 description 3
- 239000011295 pitch Substances 0.000 description 3
- 230000033764 rhythmic process Effects 0.000 description 3
- 239000007789 gas Substances 0.000 description 2
- 241001062472 Stokellia anisodon Species 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 239000013068 control sample Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 150000002894 organic compounds Chemical class 0.000 description 1
- 235000019353 potassium silicate Nutrition 0.000 description 1
- 238000012797 qualification Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000011819 refractory material Substances 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000009628 steelmaking Methods 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
Landscapes
- Furnace Housings, Linings, Walls, And Ceilings (AREA)
- Carbon Steel Or Casting Steel Manufacturing (AREA)
Abstract
The present invention discloses a converter bedding face repair material, which is special in comprising the following raw materials by weight: 77-80wt% of magnesia and 20-23wt% of liquid sodium silicate. The magnesia comprises a mixture of one or both of sintered magnesia and fused magnesia in any proportion; the liquid sodium silicate has modulus of no less than 3, proportion of 1.2-1.25 g/cm<3>. The converter bedding face repair material is obtained by the following method: weighing magnesia according to the ratio, adding the magnesia into a mixer, carrying out dry mixing, evenly mixing, discharging, and packaging; and adding liquid sodium silicate according to the ratio, stirring evenly and carrying out fettling operation. The invention uses liquid sodium silicate as a binder, which has good flow spreadability; and the sintering process just takes 20-30 minutes, does not produce toxic smoke, and is environment-friendly.
Description
Technical field
The present invention relates to technical field of refractory materials, refer to a kind of Large face repair material of converter particularly.
Background technology
Converter steelmaking equipment, works for a long time in high temperature environments, can meet steel face and produces very serious loss, therefore, mending material all will be adopted to repair it after using for some time, smelt with satisfied safety the needs produced owing to adding washing away of steel scrap and molten steel to it.The repairing of converter lining is the effective measure of extending furnace lining life, the damage of balanced furnace lining, reduction production cost.Due to the labile factor of converter operation, some position of furnace lining there will be damages prematurely, at this moment repairs and just should start, and will carry out regular or irregular this repairing according to the working of a furnace in whole stove labour.To the later stage that furnace lining uses, repairing amount can constantly increase, and repairs the time used also constantly to extend, and had influence on safe, stable, the economical operation of converter, at this moment lining life just should terminate.
It is raw material that converter current fettling large repair material adopts usually with magnesia, using organism such as pitches as bonding agent, wherein bonding agent add-on is generally 12-15%, although have certain repair efficiency, but it is at all many-sided Shortcomings, be mainly manifested in: 1, in converter fettling process, the organic compound combustions such as pitch can produce a large amount of toxic black smoke and overflow from fire door, to environment, are detrimental to health; 2, bitumeniferous repair material not easy-sintering, sintering time is longer, generally reach 40-100 minute, sometimes artificial coaloust-oxygen gun need be used to carry out auxiliary baking to furnace lining at fire door, detrimentally affect is produced to the safety and health of operator, repairs time length simultaneously and can upset steel mill's rhythm of production and reduce output of steel; 3, the spreadability that flows is poor, is not easy to converter fettling operation; 4, adhesive rate is low, and for the position that lining erosion is more serious, lower adhesive rate can make large face repair material and large of furnace lining be difficult to sinter an entirety securely into.
Therefore, research and develop that a kind of environmental protection, sintering time are short, good, that adhesive rate the is high Large face repair material of converter of flowing spreadability seems very necessary.
Summary of the invention
The object of the invention is to overcome above-mentioned deficiency, provide a kind of Large face repair material of converter, it possesses, and environmental protection, sintering time are short, flowing spreadability is good, adhesive rate advantages of higher.
To achieve these goals, a kind of Large face repair material of converter of the present invention's design, its special character is, the raw material of described Large face repair material of converter composition and mass percent as follows:
Magnesia 77-80wt%
Liquid soluble glass 20-23wt%;
Described magnesia is made up of one or both arbitrary proportion mixtures in electrosmelted magnesite clinker and magnesite clinker, and modulus>=3 of described liquid soluble glass, proportion are 1.2-1.25g/cm
3;
Described Large face repair material of converter obtains by the following method: drop in stirrer after being weighed by proportioning by magnesia and be dry mixed, mix rear discharging packaging, add liquid soluble glass stir when carrying out fettling operation by proportioning.
Preferably, described magnesia is mixed by granularity 1mm≤D≤3mm, 0.088mm≤D<1mm, D<0.088mm, and the mass percent of grain composition in magnesia of described three kinds of granularities is as follows:
1mm≤D≤3mm30-40wt％
0.088mm≤D<1mm30-40wt％
D<0.088mm30-40wt％。
Further, the component of described electrosmelted magnesite clinker and mass percent as follows:
MgO97.0-99.8wt％
SiO
20.1-1.5wt％
CaO0.1-1.5wt％；
Component and the mass percent of described magnesite clinker are as follows:
MgO95.0-97.5wt％
SiO
20.1-5wt％
Igloss 0.1-0.5wt%;
Component and the mass percent of described liquid soluble glass are as follows:
SiO
230-45wt％
Na
2O10-15wt％
Water 45-60wt%.
Again further, described Large face repair material of converter raw material composition and mass percent as follows:
Again further, described converter lining raw material composition and mass percent as follows:
Again further, described Large face repair material of converter raw material composition and mass percent as follows:
Again further, described Large face repair material of converter raw material composition and mass percent as follows:
Again further, described Large face repair material of converter raw material composition and mass percent as follows:
Again further, described Large face repair material of converter raw material composition and mass percent as follows:
Selection and the weight part principle of qualification of Large face repair material of converter each component of the present invention are as follows:
Magnesia raw material erosion resistance is good, adopts varigrained electrosmelted magnesite clinker or magnesite clinker, can improve the erosion resistance of repair material, is conducive to the life-span extending converter lining; Liquid soluble glass is as bonding agent, its adhesive rate is high, flowing spreadability is good, repair material can be made to have lower thermal conductivity and higher intensity, adopt appropriate amount of fluid water glass can ensure that repair material all has higher intensity and do not produce low melt-phase in the whole temperature range brought into use to terminating, is conducive to the life-span of prolongation converter lining as bonding agent.
Compared with prior art, the present invention has the following advantages:
One, the present invention is used in the process of converter fettling, and inorganics liquid soluble glass can not produce dusty gas as bonding agent in sintering process, environmentally friendly, also can not be detrimental to health;
They are two years old, the present invention is used in the process of converter fettling, and sintering time only needs 20-30 minute, carries out auxiliary baking without the need to using artificial coaloust-oxygen gun at fire door to furnace lining, ensure the safety and health of operator, meet steel mill's rhythm of production requirement and the quick fettling requirement of environmental protection simultaneously;
Its three, the present invention's spreadability that flows is better, is convenient to converter fettling operation;
Its four, adhesive rate of the present invention is high, for the position that lining erosion is more serious, is easy to make large face repair material and the large face of furnace lining sinter an entirety securely into.
Embodiment
For understanding content of the present invention further, below in conjunction with specific embodiment, the present invention is further illustrated.
Embodiment 1
The starting material that 100kg Large face repair material of converter adopts and weight as follows:
Wherein, the component of electrosmelted magnesite clinker and mass percent as follows:
MgO97wt％
SiO
21.5wt％
CaO1.5wt％；
Modulus>=3 of liquid soluble glass, proportion are 1.2-1.25g/cm
3, its component and mass percent as follows:
SiO
230wt％
Na
2O10wt％
Water 60wt%.
Large face repair material of converter obtains by the following method: drop in stirrer after being weighed by said ratio by above-mentioned magnesia and be dry mixed, mix rear discharging packaging, add liquid soluble glass stir when carrying out fettling operation by said ratio.The repair material hopper mixed is poured in converter and is carried out fettling and operate.
Embodiment 2
The starting material that 100kg Large face repair material of converter adopts and weight as follows:
Wherein, the component of magnesite clinker and mass percent as follows:
MgO95wt％
SiO
24.5wt％
Igloss 0.5wt%;
The mass percent of the modulus of liquid soluble glass, proportion, component and component is identical with embodiment 1.The preparation method of Large face repair material of converter is identical with embodiment 1 with using method.
Embodiment 3
The starting material that 100kg Large face repair material of converter adopts and weight as follows:
Wherein, the component of electrosmelted magnesite clinker and mass percent identical with embodiment 1.
The component of magnesite clinker and mass percent identical with embodiment 2.
The mass percent of the modulus of liquid soluble glass, proportion, component and component is identical with embodiment 1.
The preparation method of Large face repair material of converter is identical with embodiment 1 with using method.
Embodiment 4
The starting material that 100kg Large face repair material of converter adopts and weight as follows:
Wherein, the component of electrosmelted magnesite clinker and mass percent as follows:
MgO99.8wt％
SiO
20.1wt％
CaO0.1wt％；
Modulus>=3 of liquid soluble glass, proportion are 1.2-1.25g/cm
3, its component and mass percent as follows:
SiO
245wt％
Na
2O15wt％
Water 40wt%.
The preparation method of Large face repair material of converter is identical with embodiment 1 with using method.
Embodiment 5
The starting material that 100kg Large face repair material of converter adopts and weight as follows:
Wherein, the component of magnesite clinker and mass percent as follows:
MgO97.5wt％
SiO
22wt％
Igloss 0.5wt%;
The mass percent of the modulus of liquid soluble glass, proportion, component and component is identical with embodiment 4.
The preparation method of Large face repair material of converter is identical with embodiment 1 with using method.
Embodiment 6
The starting material that 100kg Large face repair material of converter adopts and weight as follows:
Wherein, the component of electrosmelted magnesite clinker and mass percent identical with embodiment 4.
The component of magnesite clinker and mass percent identical with embodiment 5.
The mass percent of the modulus of liquid soluble glass, proportion, component and component is identical with embodiment 4.
The preparation method of Large face repair material of converter is identical with embodiment 1 with using method.
Particularly, the Large face repair material of converter that above-described embodiment is produced carries out industrial contrast experiment, and experimental result is as shown in table 1 below.
The related industries test-results of the Large face repair material of converter of each embodiment of table 1
Note: control sample is that employing is raw material with magnesia, using organism such as pitches as the converter fettling of bonding agent large repair material, wherein bonding agent add-on is 12-15%.
Result shows, Large face repair material of converter of the present invention can not produce dusty gas in sintering process, environmentally friendly, also can not be detrimental to health; Sintering time only needs 20-30 minute, without the need to using at fire door artificial coaloust-oxygen gun to carry out auxiliary baking to furnace lining, ensureing the safety and health of operator, meeting steel mill's rhythm of production requirement and the quick fettling requirement of environmental protection simultaneously; Flowing spreadability is better, is convenient to converter fettling operation; Adhesive rate is high, for the position that lining erosion is more serious, is easy to make large face repair material and the large face of furnace lining sinter an entirety securely into.
Above-described embodiment is only the best and exemplifies, and is not the restriction to embodiments of the present invention.
Other is prior art without the part described in detail.
Claims (9)
1. a Large face repair material of converter, is characterized in that, the raw material of described Large face repair material of converter composition and mass percent as follows:
Magnesia 77-80wt%
Liquid soluble glass 20-23wt%;
Described magnesia is made up of one or both arbitrary proportion mixtures in electrosmelted magnesite clinker and magnesite clinker, and modulus>=3 of described liquid soluble glass, proportion are 1.2-1.25g/cm
3;
Described Large face repair material of converter obtains by the following method: drop in stirrer after being weighed by proportioning by magnesia and be dry mixed, mix rear discharging packaging, add liquid soluble glass stir when carrying out fettling operation by proportioning.
2. Large face repair material of converter according to claim 1, it is characterized in that: described magnesia is mixed by granularity 1mm≤D≤3mm, 0.088mm≤D<1mm, D<0.088mm, the mass percent of grain composition in magnesia of described three kinds of granularities is as follows:
1mm≤D≤3mm30-40wt％
0.088mm≤D<1mm30-40wt％
D<0.088mm30-40wt％。
3. Large face repair material of converter according to claim 1, is characterized in that:
Component and the mass percent of described electrosmelted magnesite clinker are as follows:
MgO97.0-99.8wt％
SiO
20.1-1.5wt％
CaO0.1-1.5wt％；
Component and the mass percent of described magnesite clinker are as follows:
MgO95.0-97.5wt％
SiO
20.1-5wt％
Igloss 0.1-0.5wt%;
Component and the mass percent of described liquid soluble glass are as follows:
SiO
230-45wt％
Na
2O10-15wt％
Water 45-60wt%.
4. Large face repair material of converter according to claim 2, is characterized in that: the raw material of described Large face repair material of converter composition and mass percent as follows:
5. Large face repair material of converter according to claim 2, is characterized in that: the raw material of described converter lining composition and mass percent as follows:
6. Large face repair material of converter according to claim 2, is characterized in that: the raw material of described Large face repair material of converter composition and mass percent as follows:
7. Large face repair material of converter according to claim 2, is characterized in that: the raw material of described Large face repair material of converter composition and mass percent as follows:
8. Large face repair material of converter according to claim 2, is characterized in that: the raw material of described Large face repair material of converter composition and mass percent as follows:
9. Large face repair material of converter according to claim 2, is characterized in that: the raw material of described Large face repair material of converter composition and mass percent as follows:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510888878.8A CN105367098A (en) | 2015-12-04 | 2015-12-04 | Converter bedding face repair material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510888878.8A CN105367098A (en) | 2015-12-04 | 2015-12-04 | Converter bedding face repair material |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105367098A true CN105367098A (en) | 2016-03-02 |
Family
ID=55369803
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510888878.8A Pending CN105367098A (en) | 2015-12-04 | 2015-12-04 | Converter bedding face repair material |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105367098A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU1418320A1 (en) * | 1986-06-20 | 1988-08-23 | Киевский Инженерно-Строительный Институт | Concrete mix |
| SU1474120A1 (en) * | 1986-12-26 | 1989-04-23 | Киевский Инженерно-Строительный Институт | Refractory binder |
| CN102432322A (en) * | 2011-10-10 | 2012-05-02 | 武汉钢铁(集团)公司 | Environment-friendly rapidly-sintered patching material for converter and preparation method thereof |
| CN103642974A (en) * | 2013-12-04 | 2014-03-19 | 海城市金福锋耐火材料有限公司 | Long-life magnesian gunite mixture for rotary furnace |
-
2015
- 2015-12-04 CN CN201510888878.8A patent/CN105367098A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU1418320A1 (en) * | 1986-06-20 | 1988-08-23 | Киевский Инженерно-Строительный Институт | Concrete mix |
| SU1474120A1 (en) * | 1986-12-26 | 1989-04-23 | Киевский Инженерно-Строительный Институт | Refractory binder |
| CN102432322A (en) * | 2011-10-10 | 2012-05-02 | 武汉钢铁(集团)公司 | Environment-friendly rapidly-sintered patching material for converter and preparation method thereof |
| CN103642974A (en) * | 2013-12-04 | 2014-03-19 | 海城市金福锋耐火材料有限公司 | Long-life magnesian gunite mixture for rotary furnace |
Non-Patent Citations (8)
| Title |
|---|
| 上海科学技术情报研究所: "《国外氧气底吹转炉发展概况》", 1 September 1976, 上海科学技术情报研究所 * |
| 中国冶金设备总公司等: "《国际冶金机电设备手册》", 31 October 1990, 知识出版社 * |
| 曹枫等: "冶金炉用喷补料开发的新动向", 《华东冶金学院学报》 * |
| 梁训裕: "转炉、电炉及盛钢桶用优质喷补料", 《国外耐火材料》 * |
| 梁训裕: "转炉和电炉用碱性喷补料的新发展", 《国外耐火材料》 * |
| 游杰刚等: "《钢铁冶金用耐火材料》", 30 June 2014, 冶金工业出版社 * |
| 许晓海等: "《耐火材料技术手册》", 31 January 2000, 冶金工业出版社 * |
| 鞍山钢铁公司第一炼钢厂: "《平炉炼钢生产》", 31 May 1974, 冶金工业出版社 * |
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Effective date of registration: 20180420 Address after: No. 1, Qingshan District, Hubei Province, Wuhan City, Hubei Applicant after: Wuhan Iron & Steel (Group) Corp. Address before: 430080, No. 15, Friendship Road 999, Wuchang Friendship Road, Hubei, Wuhan, (Wuhan Iron and Steel Research Institute) Applicant before: Wuhan Iron & Steel (Group) Corp. |
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Application publication date: 20160302 |