CN104119085B - For the hot mending material of flush type desulfurized for molten iron - Google Patents
For the hot mending material of flush type desulfurized for molten iron Download PDFInfo
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- CN104119085B CN104119085B CN201410312076.8A CN201410312076A CN104119085B CN 104119085 B CN104119085 B CN 104119085B CN 201410312076 A CN201410312076 A CN 201410312076A CN 104119085 B CN104119085 B CN 104119085B
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- corundum spinel
- andaluzite
- molten iron
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Abstract
The invention discloses a kind of hot mending material for flush type desulfurized for molten iron, it is characterized in that: it is grouped into by the one-tenth of following weight percent: the rear reworked material 35 ~ 60% of corundum spinel; Fused mullite 13 ~ 30%; Andaluzite 8 ~ 20%; Guangxi white clay 8 ~ 15%; Oxalic acid 0.5 ~ 1.9%; Aluminium dihydrogen phosphate 10 ~ 20%; Polypropylene/ethylene fiber 0.1 ~ 0.5%.Repair material of the present invention have good thermal shock resistance can and high volume stability, bonding force by force, has stronger antiscour antistrip performance, plasticity-and extrusion flow sex change good.The repair material plastic maintenance time limit is long, and more general repair material extends 30 ~ 60 days, for the transport of product and preservation are provided convenience.Repair material adopts corundum spinel to be raw material with rear reworked material, and contribution has been made in the recycle for refractory materials, has good Social benefit and economic benefit.
Description
Technical field
The present invention relates to steelmaking technical field, particularly refer to a kind of hot mending material for flush type desulfurized for molten iron.
Background technology
At present, the desulfurizing iron pretreatment mode that domestic iron and steel enterprises adopts mainly contains two kinds: spray gun blowing desulfurization and KR agitator stirring desulphurization.Due to violent scour and the rapid heat cycle effect frequently of molten iron, the refractory materials of spray gun and agitator is caused to serve as a contrast body erosion, peel off, there is the crackle that length differs and breakage, have a strong impact on the work-ing life of desulfurization utensil and the technico-economical comparison of sulfur removal technology process.In order to effectively extend the work-ing life of desulfurization utensil, many producers successively adopt multiple repair material to repair, as the mullite repair material of " CN101880168B " patent and the alumina-silica rapid repair material etc. of " CN100341819C " patent, but also exist that repair layer draw is peeled off, low strength not erosion resistance, thermal shock resistance can poor, the shortcoming such as the plasticity-maintenance time limit is shorter.
Summary of the invention
In order to solve the problem, the object of this invention is to provide a kind of hot mending material for flush type desulfurized for molten iron, this repair material is for the hot mending material for the spray gun of molten iron spraying desulfurization spraying or the agitator of stirring desulphurization, and thermal shock resistance energy is good, antiscour antistripping, high-temperature behavior are good, plasticity-keeps time limit long economic environmental protection again.
For achieving the above object, the hot mending material for flush type desulfurized for molten iron provided by the invention, is characterized in that: it is grouped into by the one-tenth of following weight percent: the rear reworked material 35 ~ 60% of corundum spinel; Fused mullite 13 ~ 30%; Andaluzite 8 ~ 20%; Guangxi white clay 8 ~ 15%; Oxalic acid 0.5 ~ 1.9%; Aluminium dihydrogen phosphate 10 ~ 20%; Polypropylene/ethylene fiber 0.1 ~ 0.5%.
Preferably, it is grouped into by the one-tenth of following weight percent: the rear reworked material 40% of corundum spinel; Fused mullite 22%; Andaluzite 15%; Guangxi white clay 12%; Oxalic acid 1%; Aluminium dihydrogen phosphate 10%; Polypropylene/ethylene fiber 0.1%.
Further, the described corundum spinel Al of rear reworked material
2o
3mass percentage>=85%, the corundum spinel 0.088mm≤granularity≤3mm of rear reworked material, wherein: the corundum spinel of 1mm≤granularity≤3mm accounts for corundum spinel 15 ~ 35% of rear reworked material total mass with rear reworked material; The Al of described andaluzite
2o
3mass percentage>=52%, the 1mm≤granularity≤3mm of andaluzite; The Al of described fused mullite
2o
3mass percentage>=70%, the granularity≤0.088mm of fused mullite; The Al of described Guangxi white clay
2o
3mass percentage>=30%, the granularity≤0.088mm of Guangxi white clay.
Patching material of the present invention adopts the rear reworked material of corundum spinel, fused mullite, andaluzite, Guangxi white clay, oxalic acid, aluminium dihydrogen phosphate to be raw material, polypropylene/ethylene fiber is admixture, there is good thermal shock resistance energy, high-temperature behavior and antiscour antistripping ability, plasticity-is high, keep time limit long economic environmental protection again.
Concrete advantage of the present invention is as follows:
One, repair material of the present invention have good thermal shock resistance can and high volume stability, bonding force by force, has stronger antiscour antistrip performance, plasticity-and extrusion flow sex change good.
Its two, the repair material of the present invention plastic maintenance time limit is long, and more general repair material extends 30 ~ 60 days, for the transport of product and preservation are provided convenience.
Its three, repair material of the present invention adopts corundum spinel to be raw material with rear reworked material, and contribution has been made in the recycle for refractory materials, has good Social benefit and economic benefit.
Embodiment
Below in conjunction with specific embodiment, the present invention is described in further detail.
Embodiment one:
Hot mending material for flush type desulfurized for molten iron of the present invention, it is grouped into by the one-tenth of following weight per-cent:
The corundum spinel Al of rear reworked material
2o
3mass percentage>=85%, corundum spinel is 3 ~ 0.088mm by the granularity of rear reworked material, wherein: the corundum spinel of 1mm≤granularity≤3mm accounts for corundum spinel 25% of rear reworked material total mass with rear reworked material; The Al of andaluzite
2o
3mass percentage>=52%, the granularity of andaluzite is 3 ~ 1mm; The Al of fused mullite
2o
3mass percentage>=70%, the granularity≤0.088mm of fused mullite; The Al of Guangxi white clay
2o
3mass percentage>=30%, the granularity≤0.088mm of Guangxi white clay.
Control granularity and the Al of the rear reworked material of corundum spinel
2o
3content can ensure the high-temperature physical property of repair material and the antiscour antistrip performance to molten iron; Control granularity and the Al of fused mullite
2o
3content can strengthen high volume stability and the thermal shock resistance energy of repair material; Control granularity and the Al of andaluzite
2o
3content can improve repair material thermal shock resistance can and high volume stability, not draw during use; Control granularity and the Al of Guangxi white clay
2o
3content can strengthen the plasticity of repair material.
Adding polypropylene/ethylene fiber can make repair material of the present invention in use not burst, and adds the plasticity-maintenance time limit that oxalic acid can extend repair material of the present invention; Add aluminium dihydrogen phosphate as bonding agent, make repair material of the present invention have plasticity-, during use, can stronger bonding force be produced.The plastic maintenance time limit more general repair material of repair material of the present invention can extend about 45 days.
Embodiment two:
Hot mending material for flush type desulfurized for molten iron of the present invention, it is grouped into by the one-tenth of following weight per-cent:
The corundum spinel Al of rear reworked material
2o
3mass percentage>=85%, corundum spinel is 3 ~ 0.088mm by the granularity of rear reworked material, wherein: the corundum spinel of 1mm≤granularity≤3mm accounts for corundum spinel 35% of rear reworked material total mass with rear reworked material; The Al of andaluzite
2o
3mass percentage>=52%, the granularity of andaluzite is 3 ~ 1mm; The Al of fused mullite
2o
3mass percentage>=70%, the granularity≤0.088mm of fused mullite; The Al of Guangxi white clay
2o
3mass percentage>=30%, the granularity≤0.088mm of Guangxi white clay.
The plastic maintenance time limit more general repair material of repair material of the present invention can extend about 60 days.
Embodiment three:
Hot mending material for flush type desulfurized for molten iron of the present invention, it is grouped into by the one-tenth of following weight per-cent:
The corundum spinel Al of rear reworked material
2o
3mass percentage>=85%, corundum spinel is 3 ~ 0.088mm by the granularity of rear reworked material, wherein: the corundum spinel of 1mm≤granularity≤3mm accounts for corundum spinel 15% of rear reworked material total mass with rear reworked material; The Al of andaluzite
2o
3mass percentage>=52%, the granularity of andaluzite is 3 ~ 1mm; The Al of fused mullite
2o
3mass percentage>=70%, the granularity≤0.088mm of fused mullite; The Al of Guangxi white clay
2o
3mass percentage>=30%, the granularity≤0.088mm of Guangxi white clay.
The plastic maintenance time limit more general repair material of repair material of the present invention can extend about 30 days.
Embodiment four:
Hot mending material for flush type desulfurized for molten iron of the present invention, it is grouped into by the one-tenth of following weight per-cent:
The corundum spinel Al of rear reworked material
2o
3mass percentage>=85%, corundum spinel is 3 ~ 0.088mm by the granularity of rear reworked material, wherein: the corundum spinel of 1mm≤granularity≤3mm accounts for corundum spinel 30% of rear reworked material total mass with rear reworked material; The Al of andaluzite
2o
3mass percentage>=52%, the granularity of andaluzite is 3 ~ 1mm; The Al of fused mullite
2o
3mass percentage>=70%, the granularity≤0.088mm of fused mullite; The Al of Guangxi white clay
2o
3mass percentage>=30%, the granularity≤0.088mm of Guangxi white clay.
The plastic maintenance time limit more general repair material of repair material of the present invention can extend about 50 days.
Embodiment five:
Hot mending material for flush type desulfurized for molten iron of the present invention, it is grouped into by the one-tenth of following weight per-cent:
The corundum spinel Al of rear reworked material
2o
3mass percentage>=85%, corundum spinel is 3 ~ 0.088mm by the granularity of rear reworked material, wherein: the corundum spinel of 1mm≤granularity≤3mm accounts for corundum spinel 30% of rear reworked material total mass with rear reworked material; The Al of andaluzite
2o
3mass percentage>=52%, the granularity of andaluzite is 3 ~ 1mm; The Al of fused mullite
2o
3mass percentage>=70%, the granularity≤0.088mm of fused mullite; The Al of Guangxi white clay
2o
3mass percentage>=30%, the granularity≤0.088mm of Guangxi white clay.
The plastic maintenance time limit more general repair material of repair material of the present invention can extend about 45 days.
Embodiment six:
Hot mending material for flush type desulfurized for molten iron of the present invention, it is grouped into by the one-tenth of following weight per-cent:
The corundum spinel Al of rear reworked material
2o
3mass percentage>=85%, corundum spinel is 3 ~ 0.088mm by the granularity of rear reworked material, wherein: the corundum spinel of 1mm≤granularity≤3mm accounts for corundum spinel 30% of rear reworked material total mass with rear reworked material; The Al of andaluzite
2o
3mass percentage>=52%, the granularity of andaluzite is 3 ~ 1mm; The Al of fused mullite
2o
3mass percentage>=70%, the granularity≤0.088mm of fused mullite; The Al of Guangxi white clay
2o
3mass percentage>=30%, the granularity≤0.088mm of Guangxi white clay.
The plastic maintenance time limit more general repair material of repair material of the present invention can extend about 45 days.
Claims (3)
1. for a hot mending material for flush type desulfurized for molten iron, it is characterized in that: it is grouped into by the one-tenth of following weight percent: the rear reworked material 35 ~ 45% of corundum spinel; Fused mullite 15.5 ~ 21.9%; Andaluzite 10 ~ 15%; Guangxi white clay 12 ~ 15%; Oxalic acid 1 ~ 1.5%; Aluminium dihydrogen phosphate 15 ~ 20%; Polypropylene/ethylene fiber 0.2 ~ 0.5%.
2. the hot mending material for flush type desulfurized for molten iron according to claim 1, is characterized in that: it is grouped into by the one-tenth of following weight percent: the rear reworked material 40% of corundum spinel; Fused mullite 21.9%; Andaluzite 15%; Guangxi white clay 12%; Oxalic acid 1%; Aluminium dihydrogen phosphate 10%; Polypropylene/ethylene fiber 0.1%.
3. the hot mending material for flush type desulfurized for molten iron according to claim 1 and 2, is characterized in that: the described corundum spinel Al of rear reworked material
2o
3mass percentage>=85%, the corundum spinel 0.088mm≤granularity≤3mm of rear reworked material, wherein: the corundum spinel of 1mm≤granularity≤3mm accounts for corundum spinel 15 ~ 35% of rear reworked material total mass with rear reworked material; The Al of described andaluzite
2o
3mass percentage>=52%, the 1mm≤granularity≤3mm of andaluzite; The Al of described fused mullite
2o
3mass percentage>=70%, the granularity≤0.088mm of fused mullite; The Al of described Guangxi white clay
2o
3mass percentage>=30%, the granularity≤0.088mm of Guangxi white clay.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410312076.8A CN104119085B (en) | 2014-07-02 | 2014-07-02 | For the hot mending material of flush type desulfurized for molten iron |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410312076.8A CN104119085B (en) | 2014-07-02 | 2014-07-02 | For the hot mending material of flush type desulfurized for molten iron |
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| CN104119085A CN104119085A (en) | 2014-10-29 |
| CN104119085B true CN104119085B (en) | 2016-04-27 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105036775B (en) * | 2015-08-07 | 2017-07-04 | 武汉钢铁(集团)公司 | A kind of fish torpedo ladle slag line area material for repairing |
| CN106187230A (en) * | 2016-07-14 | 2016-12-07 | 武汉钢铁股份有限公司 | Molten iron pretreatment utensil on-line maintenance material for repairing and its preparation method and application |
| CN107010932A (en) * | 2017-05-09 | 2017-08-04 | 郑州耐都热陶瓷有限公司 | High temperature liner body skin patching material |
| CN110342951A (en) * | 2019-08-28 | 2019-10-18 | 云南濮耐昆钢高温材料有限公司 | A kind of ladle refractory wass and preparation method thereof |
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- 2014-07-02 CN CN201410312076.8A patent/CN104119085B/en active Active
Non-Patent Citations (2)
| Title |
|---|
| 攀钢脱硫枪热修补可塑料的研制;王洪芳等;《耐火材料》;20081231;第42卷(第4期);第282－284页 * |
| 用后耐火材料回收利用研究现状与进展;周旺枝等;《武钢技术》;20130430;第51卷(第2期);第4－7页 * |
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Effective date of registration: 20180420 Address after: No. 1, Qingshan District, Hubei Province, Wuhan City, Hubei Patentee after: Wuhan Iron & Steel (Group) Corp. Address before: 430080 Wuchang, Hubei Friendship Road, No. A, block, floor 999, 15 Patentee before: Wuhan Iron & Steel (Group) Corp. |