CN104310888B - A kind of stirring-head coating against binding slags - Google Patents
A kind of stirring-head coating against binding slags Download PDFInfo
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- CN104310888B CN104310888B CN201410538999.5A CN201410538999A CN104310888B CN 104310888 B CN104310888 B CN 104310888B CN 201410538999 A CN201410538999 A CN 201410538999A CN 104310888 B CN104310888 B CN 104310888B
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
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Abstract
The invention discloses a kind of stirring-head coating against binding slags, it is characterised in that the chemical composition of described coating includes: with rear aluminum-silicon carbide brick Al2O3SiC C brick reworked material, described uses rear Al2O3The percentage by weight of SiC C brick reworked material is 30～60%；Limestone, the percentage by weight of described limestone is 25～50%；Alumina, the percentage by weight of described Alumina is 0～20%；Alumina powder, the percentage by weight of described alumina powder is 1～3%；Fine silica powder, the percentage by weight of described fine silica powder is 3～5%；Alumina cement, the percentage by weight of described alumina cement is 1～2%；Kyanite, the percentage by weight of described kyanite is 1～5%；Regeneration alumina silicate fibre, the percentage by weight of described regeneration alumina silicate fibre is 0～1%；Paper fiber, the percentage by weight of described paper fiber is 0～1%；Phosphate, described phosphatic percentage by weight is 3～5%.So, can effectively prevent the dry slag of stirring-head, improve the service life of stirring-head.
Description
Technical field
The present invention relates to hot metal in steelmaking preconditioning technique field, particularly relate to a kind of stirring-head coating against binding slags.
Background technology
In steelmaking process, need hot metal in steelmaking is carried out pretreatment, due to turnaround speed, sulfur removal technology,
Desulfurizing agent composition and granularity, the material of castable and molten steel quality etc. affect, in the sweetening process of stirring-head
In, corrode, at shaft, paddle root, bond substantial amounts of desulfurization slag and desulfurizing agent, cause stirring-head weight
Increase, stirring region reduces, and under certain stirring intensity, speed of agitator is accelerated, and stirring power consumption rises,
Exacerbate the abrasion of stirring-head refractory material liner body and the swing of whipping process, and then cause refractory material liner body
Pinch spalling.
At present, in-situ processing desulfurization slag mode typically uses pneumatic pick scarfing cinder.But process molten iron slag frequently, no
But add labor intensity, and it is long to process the time, reduce production efficiency；Meanwhile, need at high temperature to locate
Reason operation, staff is easy to be burned, there is potential safety hazard；It addition, in processing procedure, easily
Cause refractory material mechanical damage, cause the increase of refractory material cost.
Summary of the invention
The problem existed for prior art, provides a kind of stirring-head slag adhesion and is coated with in embodiments of the invention
Material, low cost, preparation are convenient, have good abrasion resistance, resistance to slag corrosion.
The technical scheme is that and be achieved in that:
The invention provides a kind of stirring-head coating against binding slags, the chemical composition of described coating includes: use rear aluminum
Carborundum carbon brick Al2O3-SiC-C brick reworked material, described uses rear Al2O3The weight percent of-SiC-C brick reworked material
Ratio is 30～60%；
Limestone, the percentage by weight of described limestone is 25～50%；
Alumina, the percentage by weight of described Alumina is 0～20%；
Alumina powder, the percentage by weight of described alumina powder is 1～3%；
Fine silica powder, the percentage by weight of described fine silica powder is 3～5%；
Alumina cement, the percentage by weight of described alumina cement is 1～2%；
Kyanite, the percentage by weight of described kyanite is 1～5%；
Regeneration alumina silicate fibre, the percentage by weight of described regeneration alumina silicate fibre is 0～1%；
Paper fiber, the percentage by weight of described paper fiber is 0～1%；
Phosphate, described phosphatic percentage by weight is 3～5%.
In such scheme, described use rear Al2O3-SiC-C brick reworked material includes:
First uses rear Al2O3-SiC-C brick reworked material, described first uses rear Al2O3The grain of-SiC-C brick reworked material
Degree is 3～1mm, and percentage by weight is 10～40%；
Second uses rear Al2O3-SiC-C brick reworked material, described second uses rear Al2O3The grain of-SiC-C brick reworked material
Degree is 1～0mm, and percentage by weight is 10～40%.
In such scheme, the granularity of described limestone is not more than 2mm；Calcium carbonate CaCO in described limestone3
Percentage by weight more than 70%.
In such scheme, wherein, described limestone includes: the first limestone, the second limestone；Wherein,
The granularity of described first limestone is 2～0.088mm, and percentage by weight is 10～30%；
The granularity of described first limestone is less than 0.088mm, and percentage by weight is 10～30%.
In such scheme, described Alumina includes:
First Alumina, the granularity of described first Alumina is 3～1mm, and percentage by weight is 0～10%；
Second Alumina, the granularity of described second Alumina is 1～0.088mm, and percentage by weight is 0～10%；
3rd Alumina, the granularity of described 3rd Alumina is less than 0.088mm, and percentage by weight is 0～20%.
In such scheme, the granularity of described alumina powder is not more than 0.088mm.
In such scheme, the granularity of described fine silica powder is not more than 0.088mm.
In such scheme, kyanite granularity used is 100 mesh.
In such scheme, described regeneration alumina silicate fibre is 1～3mm with the fibre length of described paper fiber.
In such scheme, described phosphate includes: sodium tripolyphosphate or sodium hexameta phosphate.
The embodiment of the present invention provides a kind of stirring-head coating against binding slags, and the chemical composition of described coating includes: use
Rear aluminum-silicon carbide brick Al2O3-SiC-C brick reworked material, described uses rear Al2O3The weight of-SiC-C brick reworked material
Percentage ratio is 30～60%；Limestone, the percentage by weight of described limestone is 25～50%；Alumina, described
The percentage by weight of Alumina is 0～20%；Alumina powder, the percentage by weight of described alumina powder is
1～3%；Fine silica powder, the percentage by weight of described fine silica powder is 3～5%；Alumina cement,
The percentage by weight of described alumina cement is 1～2%；Kyanite, the percentage by weight of described kyanite is
1～5%；Regeneration alumina silicate fibre, the percentage by weight of described regeneration alumina silicate fibre is 0～1%；Paper fiber,
The percentage by weight of described paper fiber is 0～1%；Phosphate, described phosphatic percentage by weight is 3～5%.
So, coating against binding slags can be made to have excellent smear, anti-cracking property and resistance to slag corrosion, it is possible to play
Strengthen and repair and the effect of slag adhesion, thus extend stirring-head service life.
Detailed description of the invention
Various embodiments of the invention provide a kind of stirring-head coating against binding slags, in order to effectively prevent the viscous of stirring-head
Slag, improves the service life of stirring-head, and the chemical composition of described coating includes: use rear aluminum-silicon carbide brick
Al2O3-SiC-C brick reworked material, described uses rear Al2O3The percentage by weight of-SiC-C brick reworked material is
30～60%；Limestone, the percentage by weight of described limestone is 25～50%；Alumina, the weight of described Alumina
Amount percentage ratio is 0～20%；Alumina powder, the percentage by weight of described alumina powder is 1～3%；Two
Ultrafine silica powder, the percentage by weight of described fine silica powder is 3～5%；Alumina cement, described Alumina
The percentage by weight of cement is 1～2%；Kyanite, the percentage by weight of described kyanite is 1～5%；Regeneration
Alumina silicate fibre, the percentage by weight of described regeneration alumina silicate fibre is 0～1%；Paper fiber, described paper is fine
The percentage by weight of dimension is 0～1%；Phosphate, described phosphatic percentage by weight is 3～5%.
Below by specific embodiment technical scheme done and describe in detail further.
The invention provides a kind of stirring-head coating against binding slags, the chemical composition of described coating includes:
With rear aluminum-silicon carbide brick Al2O3-SiC-C brick reworked material, described uses rear Al2O3-SiC-C brick reworked material
Percentage by weight be 30～60%；
Limestone, the percentage by weight of described limestone is 25～50%；
Alumina, the percentage by weight of described Alumina is 0～20%；
Alumina powder, the percentage by weight of described alumina powder is 1～3%；
Fine silica powder, the percentage by weight of described fine silica powder is 3～5%；
Alumina cement, the percentage by weight of described alumina cement is 1～2%；
Kyanite, the percentage by weight of described kyanite is 1～5%；
Regeneration alumina silicate fibre, the percentage by weight of described regeneration alumina silicate fibre is 0～1%；
Paper fiber, the percentage by weight of described paper fiber is 0～1%；
Phosphate, described phosphatic percentage by weight is 3～5%；The total weight percent of above-mentioned each component
It is 100%.
Described use rear Al2O3-SiC-C brick reworked material through slagging-off and except ferrum process, after broken, dusting cover divides,
Obtain two kinds of granularities different use rear Al2O3-SiC-C brick reworked material.Described use rear Al2O3-SiC-C brick regenerates
Material includes:
First uses rear Al2O3-SiC-C brick reworked material, described first uses rear Al2O3The grain of-SiC-C brick reworked material
Degree is 3～1mm, and percentage by weight is 10～40%；
Second uses rear Al2O3-SiC-C brick reworked material, described second uses rear Al2O3The grain of-SiC-C brick reworked material
Degree is 1～0mm, and percentage by weight is 10～40%.
Here, the granularity of described limestone is not more than 2mm；Calcium carbonate CaCO in described limestone3Weight
Percentage ratio is more than 70%.Described limestone includes: the first limestone, the second limestone；Wherein,
The granularity of described first limestone is 2～0.088mm, and percentage by weight is 10～30%；
The granularity of described first limestone is less than 0.088mm, and percentage by weight is 10～30%.
Alumina in described coating includes: the first Alumina, and the granularity of described first Alumina is 3～1mm, weight
Percentage ratio is 0～10%；Second Alumina, the granularity of described second Alumina is 1～0.088mm, percentage by weight
It is 0～10%；3rd Alumina, the granularity of described 3rd Alumina is less than 0.088mm, and percentage by weight is
0～20%.
It addition, the granularity of the described alumina powder in described coating is not more than 0.088mm；Described titanium dioxide
The granularity of silicon powder is not more than 0.088mm；Kyanite granularity used is 100 mesh.
Described regeneration alumina silicate fibre is 1～3mm with the fibre length of described paper fiber；Described phosphate bag
Include: sodium tripolyphosphate or sodium hexameta phosphate.
Here, the mixture made by said ratio, when carrying out coating construction, also need to add water, described
The percentage by weight of water is 7～20%.
Specifically, by above-mentioned weight proportion, first the bulky grain in paint ingredient and fiber are first premixed,
Then all being added in mixing plant by remaining composition, after stirring, pack uses.Then tune is used
Smearing or semidry method spraying method with manual, described spray layer thickness is 5～15mm.Above-mentioned craft smear or
Semidry method spraying method, hot with under cold condition at stirring-head, all can carry out slag adhesion process, construct
Bi Hou, toasts stirring-head 5～10min, can come into operation again on molten iron surface.
In actual application, when needing the stirring-head coating against binding slags configuring 100 kilograms, the embodiment of the present invention
The composition of the coating against binding slags provided is as follows:
Described Al2O3The weight of-SiC-C can be 42 kilograms；Wherein, described first rear Al is used2O3-SiC-C
The weight of brick reworked material is 22 kilograms, and second uses rear Al2O3The weight of-SiC-C brick reworked material is 20 kilograms.
The weight of described limestone can be 30 kilograms；Wherein, the weight of described first limestone is permissible
16 kilograms；The weight of described second limestone can be 14 kilograms.
The weight of described Alumina can be 15 kilograms；Wherein, the weight of described first Alumina can be 0 kilogram；
The weight of described second Alumina can be 0 kilogram；The weight of described 3rd Alumina can be 15 kilograms.
The weight of described alumina powder can be 2 kilograms, and the weight of described fine silica powder can be 3
Kilogram, the weight of described alumina cement can be 2 kilograms, and the weight of described kyanite can be 2 kilograms,
The weight of described regeneration alumina silicate fibre can be 0.6 kilogram, and the weight of described paper fiber can be 0.4 kilogram,
Described phosphatic weight can be 3 kilograms.
Stir in above-mentioned raw materials is added agitator, i.e. obtain required spray paint, and pack packaging.
During site operation, spraying method can be used to construct, add the water of 12% by weight percentage.After construction,
Stirring-head toasts 5～10 minutes on molten iron surface, then comes into operation.
It addition, when needing the stirring-head coating against binding slags configuring 100 kilograms, the embodiment of the present invention provides
The composition of coating against binding slags can also be as follows:
Described Al2O3The weight of-SiC-C can be 31 kilograms；Wherein, described first rear Al is used2O3-SiC-C
The weight of brick reworked material is 15 kilograms, and second uses rear Al2O3The weight of-SiC-C brick reworked material is 16 kilograms.
The weight of described limestone can be 34 kilograms；Wherein, the weight of described first limestone is permissible
19 kilograms；The weight of described second limestone can be 15 kilograms.
The weight of described Alumina can be 20 kilograms；Wherein, the weight of described first Alumina can be 4 kilograms；
The weight of described second Alumina can be 5 kilograms；The weight of described 3rd Alumina can be 11 kilograms.
The weight of described alumina powder can be 2 kilograms, and the weight of described fine silica powder can be 4
Kilogram, the weight of described alumina cement can be 2 kilograms, and the weight of described kyanite can be 2 kilograms,
The weight of described regeneration alumina silicate fibre can be 0.5 kilogram, and the weight of described paper fiber can be 0.5 kilogram,
Described phosphatic weight can be 4 kilograms.
Stir in above-mentioned raw materials is added agitator, i.e. obtain required spray paint, and pack packaging.
During site operation, spraying method can be used to construct, add the water of 8% by weight percentage.After construction,
Stirring-head toasts 5～10 minutes on molten iron surface, then comes into operation.
The stirring-head coating against binding slags that the present invention provides, with useless brick as main raw material(s), it is possible to be greatly lowered
Cost；With alumina cement as bonding agent, reach the purpose of rapid solidification；With clay for part powder, utilize
The adhesion property of clay, reduces rebound rate, increases operation rate；By the toughening effect of fiber, improve quickly
Baking applicable performance；Doing dispersant with micropowder, improve mixing uniformity, phosphate is water reducer, reduces spray
It is coated with construction water consumption.It addition, the stirring-head coating against binding slags that the present invention provides can effectively prevent the viscous of stirring-head
Slag, improves the service life of stirring-head, is not only applicable to KR stirring-head, applies also for other stirring-heads,
Easy to spread.
The above, only presently preferred embodiments of the present invention, it is not intended to limit the protection model of the present invention
Enclose, all any amendment, equivalent and improvement etc. made within the spirit and principles in the present invention, all should
Within being included in protection scope of the present invention.
Claims (10)
1. a stirring-head coating against binding slags, it is characterised in that the chemical composition of described coating includes:
With rear aluminum-silicon carbide brick Al2O3-SiC-C brick reworked material, described uses rear Al2O3-SiC-C brick reworked material
Percentage by weight be 30～60%；
Limestone, the percentage by weight of described limestone is 25～50%；
Alumina, the percentage by weight of described Alumina is 0～20%；
Alumina powder, the percentage by weight of described alumina powder is 1～3%；
Fine silica powder, the percentage by weight of described fine silica powder is 3～5%；
Alumina cement, the percentage by weight of described alumina cement is 1～2%；
Kyanite, the percentage by weight of described kyanite is 1～5%；
Regeneration alumina silicate fibre, the percentage by weight of described regeneration alumina silicate fibre is 0～1%；
Paper fiber, the percentage by weight of described paper fiber is 0～1%；
Phosphate, described phosphatic percentage by weight is 3～5%.
Coating the most according to claim 1, it is characterised in that described use rear Al2O3-SiC-C brick is again
Raw material include:
First uses rear Al2O3-SiC-C brick reworked material, described first uses rear Al2O3The grain of-SiC-C brick reworked material
Degree is 3～1mm, and percentage by weight is 10～40%；
Second uses rear Al2O3-SiC-C brick reworked material, described second uses rear Al2O3The grain of-SiC-C brick reworked material
Degree is 1～0mm, and percentage by weight is 10～40%.
Coating the most according to claim 1, it is characterised in that the granularity of described limestone is not more than
2mm；Calcium carbonate CaCO in described limestone3Percentage by weight more than 70%.
Coating the most according to claim 3, it is characterised in that wherein, described limestone includes: the
One limestone, the second limestone；Wherein,
The granularity of described first limestone is 2～0.088mm, and percentage by weight is 10～30%；
The granularity of described first limestone is less than 0.088mm, and percentage by weight is 10～30%.
Coating the most according to claim 1, it is characterised in that described Alumina includes:
First Alumina, the granularity of described first Alumina is 3～1mm, and percentage by weight is 0～10%；
Second Alumina, the granularity of described second Alumina is 1～0.088mm, and percentage by weight is 0～10%；
3rd Alumina, the granularity of described 3rd Alumina is less than 0.088mm, and percentage by weight is 0～20%.
Coating the most according to claim 1, it is characterised in that the granularity of described alumina powder is little
In 0.088mm.
Coating the most according to claim 1, it is characterised in that the granularity of described fine silica powder is not
More than 0.088mm.
Coating the most according to claim 1, it is characterised in that kyanite granularity used is 100
Mesh.
Coating the most according to claim 1, it is characterised in that described regeneration alumina silicate fibre and institute
The fibre length stating paper fiber is 1～3mm.
Coating the most according to claim 1, it is characterised in that described phosphate includes: trimerization phosphorus
Acid sodium or sodium hexameta phosphate.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410538999.5A CN104310888B (en) | 2014-10-13 | 2014-10-13 | A kind of stirring-head coating against binding slags |
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| CN201410538999.5A CN104310888B (en) | 2014-10-13 | 2014-10-13 | A kind of stirring-head coating against binding slags |
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| CN104310888A CN104310888A (en) | 2015-01-28 |
| CN104310888B true CN104310888B (en) | 2016-08-03 |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107686362B (en) * | 2017-09-18 | 2020-12-08 | 北京利尔高温材料股份有限公司 | Slag adhesion preventing isolating agent for stirring head and preparation method thereof |
| CN109248572B (en) * | 2018-10-09 | 2021-04-27 | 鞍钢股份有限公司 | Method for preventing scab of stirring paddle |
| CN110055369B (en) * | 2019-05-21 | 2020-11-20 | 武汉钢铁有限公司 | Method for quickly cleaning sticky slag of KR desulfurization stirrer for molten iron |
| CN111154931A (en) * | 2019-12-26 | 2020-05-15 | 河钢股份有限公司承德分公司 | Vanadium-containing molten iron slag pan anti-sticking agent and slag sticking prevention method |
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| CN1429677A (en) * | 2001-12-29 | 2003-07-16 | 宝山钢铁股份有限公司 | Calcium oxide paint for preventing slag adhearing on steel making container |
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| CN101062867A (en) * | 2007-04-26 | 2007-10-31 | 武汉钢铁(集团)公司 | Slag antiseizing spraying material for desulfurization hot-metal bottle |
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| CN1429677A (en) * | 2001-12-29 | 2003-07-16 | 宝山钢铁股份有限公司 | Calcium oxide paint for preventing slag adhearing on steel making container |
| CN1817973A (en) * | 2006-03-23 | 2006-08-16 | 武汉钢铁(集团)公司 | Coating against binding slags |
| CN101062867A (en) * | 2007-04-26 | 2007-10-31 | 武汉钢铁(集团)公司 | Slag antiseizing spraying material for desulfurization hot-metal bottle |
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Address after: 100041 Shijingshan Road, Beijing, No. 68, No. Patentee after: Shougang Group Co. Ltd. Address before: 100041 Shijingshan Road, Beijing, No. 68, No. Patentee before: Capital Iron & Steel General Company |
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