CN104310888A - Slag adhesion resistant coating for stirring head - Google Patents
Slag adhesion resistant coating for stirring head Download PDFInfo
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- CN104310888A CN104310888A CN201410538999.5A CN201410538999A CN104310888A CN 104310888 A CN104310888 A CN 104310888A CN 201410538999 A CN201410538999 A CN 201410538999A CN 104310888 A CN104310888 A CN 104310888A
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- granularity
- wingdale
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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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/91—Use of waste materials as fillers for mortars or concrete
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Abstract
The invention discloses a slag adhesion resistant coating for a stirring head. The slag adhesion resistant coating is characterized by being prepared from the following chemical components in percentage by weight: 30-60 percent of Al2O3-SiC-C brick recycled material as used Al-Si carbide brick, 25-50 percent of limestone, 0-20 percent of bauxite, 1-3 percent of alumina micropowder, 3-5 percent of fine silica powder, 1-2 percent of bauxite cement, 1-5 percent of kyanite, 0-1 percent of recycled aluminum silicate fiber, 0-1 percent of paper fiber and 3-5 percent of phosphate. Therefore, with the adoption of the slag adhesion resistant coating, the stirring head can be effectively prevented from adhering slag, and the service life of the stirring head is prolonged.
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 to carry out pre-treatment to hot metal in steelmaking, due to the impact such as material and molten steel quality of turnaround speed, sulfur removal technology, sweetening agent composition and granularity, mould material, in the sweetening process of stirring-head, the a large amount of desulfurization slag of bonding and sweetening agent is corroded at stir shaft, paddle root, cause that stirring-head weight increases, stirring region reduces, under certain stirring intensity, mixing speed is accelerated, stirring power consumption is risen, exacerbate the lining wearing and tearing of body of stirring-head refractory materials and the swing of whipping process, and then cause refractory materials to serve as a contrast body pinch spalling.
At present, site disposal desulfurization slag mode generally adopts pneumatic pick scarfing cinder.But process molten iron slag frequently, not only add labour intensity, and the treatment time is long, reduce production efficiency; Meanwhile, need at high temperature to process operation, staff is easy to be burned, and there is potential safety hazard; In addition, in treating processes, easily cause refractory materials physical abuse, cause the increase of refractory materials cost.
Summary of the invention
For prior art Problems existing, provide a kind of stirring-head coating against binding slags in embodiments of the invention, cost is low, easy to prepare, has good abrasion resistance, resistance to slag corrosion.
Technical scheme of the present invention is achieved in that
The invention provides a kind of stirring-head coating against binding slags, the chemical composition of described coating comprises: with rear aluminum-silicon carbide brick Al
2o
3-SiC-C brick reworked material, describedly uses rear Al
2o
3the weight percent of-SiC-C brick reworked material is 30 ~ 60%;
Wingdale, the weight percent of described Wingdale is 25 ~ 50%;
Alumina, the weight percent of described alumina is 0 ~ 20%;
Alumina powder, the weight percent of described alumina powder is 1 ~ 3%;
Fine silica powder, the weight percent of described fine silica powder is 3 ~ 5%;
Luminite cement, the weight percent of described luminite cement is 1 ~ 2%;
Kyanite, the weight percent of described kyanite is 1 ~ 5%;
Regeneration aluminum silicate fiber, the weight percent of described regeneration aluminum silicate fiber is 0 ~ 1%;
Paper fiber, the weight percent of described paper fiber is 0 ~ 1%;
Phosphoric acid salt, described phosphatic weight percent is 3 ~ 5%.
In such scheme, describedly use rear Al
2o
3-SiC-C brick reworked material comprises:
First uses rear Al
2o
3-SiC-C brick reworked material, described first uses rear Al
2o
3the granularity of-SiC-C brick reworked material is 3 ~ 1mm, and weight percent is 10 ~ 40%;
Second uses rear Al
2o
3-SiC-C brick reworked material, described second uses rear Al
2o
3the granularity of-SiC-C brick reworked material is 1 ~ 0mm, and weight percent is 10 ~ 40%.
In such scheme, the granularity of described Wingdale is not more than 2mm; Calcium carbonate CaCO in described Wingdale
3weight percent be greater than 70%.
In such scheme, wherein, described Wingdale comprises: the first Wingdale, the second Wingdale; Wherein,
The granularity of described first Wingdale is 2 ~ 0.088mm, and weight percent is 10 ~ 30%;
The granularity of described first Wingdale is for being less than 0.088mm, and weight percent is 10 ~ 30%.
In such scheme, described alumina comprises:
First alumina, the granularity of described first alumina is 3 ~ 1mm, and weight percent is 0 ~ 10%;
Second alumina, the granularity of described second alumina is 1 ~ 0.088mm, and weight percent is 0 ~ 10%;
3rd alumina, the granularity of described 3rd alumina is for being less than 0.088mm, and weight percent 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 orders.
In such scheme, the staple length of described regeneration aluminum silicate fiber and described paper fiber is 1 ~ 3mm.
In such scheme, described phosphoric acid salt comprises: tripoly phosphate sodium STPP or Sodium hexametaphosphate 99.
The embodiment of the present invention provides a kind of stirring-head coating against binding slags, and the chemical composition of described coating comprises: with rear aluminum-silicon carbide brick Al
2o
3-SiC-C brick reworked material, describedly uses rear Al
2o
3the weight percent of-SiC-C brick reworked material is 30 ~ 60%; Wingdale, the weight percent of described Wingdale is 25 ~ 50%; Alumina, the weight percent of described alumina is 0 ~ 20%; Alumina powder, the weight percent of described alumina powder is 1 ~ 3%; Fine silica powder, the weight percent of described fine silica powder is 3 ~ 5%; Luminite cement, the weight percent of described luminite cement is 1 ~ 2%; Kyanite, the weight percent of described kyanite is 1 ~ 5%; Regeneration aluminum silicate fiber, the weight percent of described regeneration aluminum silicate fiber is 0 ~ 1%; Paper fiber, the weight percent of described paper fiber is 0 ~ 1%; Phosphoric acid salt, described phosphatic weight percent is 3 ~ 5%.So, coating against binding slags can be made to have excellent smear, anti-cracking property and resistance to slag corrosion, can play to strengthen and repair and the effect of slag adhesion, thus prolongation stirring-head work-ing life.
Embodiment
Various embodiments of the invention provide a kind of stirring-head coating against binding slags, and in order to effectively prevent the dry slag of stirring-head, improve the work-ing life of stirring-head, the chemical composition of described coating comprises: with rear aluminum-silicon carbide brick Al
2o
3-SiC-C brick reworked material, describedly uses rear Al
2o
3the weight percent of-SiC-C brick reworked material is 30 ~ 60%; Wingdale, the weight percent of described Wingdale is 25 ~ 50%; Alumina, the weight percent of described alumina is 0 ~ 20%; Alumina powder, the weight percent of described alumina powder is 1 ~ 3%; Fine silica powder, the weight percent of described fine silica powder is 3 ~ 5%; Luminite cement, the weight percent of described luminite cement is 1 ~ 2%; Kyanite, the weight percent of described kyanite is 1 ~ 5%; Regeneration aluminum silicate fiber, the weight percent of described regeneration aluminum silicate fiber is 0 ~ 1%; Paper fiber, the weight percent of described paper fiber is 0 ~ 1%; Phosphoric acid salt, described phosphatic weight percent is 3 ~ 5%.
Below by specific embodiment technical scheme of the present invention done and describe in detail further.
The invention provides a kind of stirring-head coating against binding slags, the chemical composition of described coating comprises:
With rear aluminum-silicon carbide brick Al
2o
3-SiC-C brick reworked material, describedly uses rear Al
2o
3the weight percent of-SiC-C brick reworked material is 30 ~ 60%;
Wingdale, the weight percent of described Wingdale is 25 ~ 50%;
Alumina, the weight percent of described alumina is 0 ~ 20%;
Alumina powder, the weight percent of described alumina powder is 1 ~ 3%;
Fine silica powder, the weight percent of described fine silica powder is 3 ~ 5%;
Luminite cement, the weight percent of described luminite cement is 1 ~ 2%;
Kyanite, the weight percent of described kyanite is 1 ~ 5%;
Regeneration aluminum silicate fiber, the weight percent of described regeneration aluminum silicate fiber is 0 ~ 1%;
Paper fiber, the weight percent of described paper fiber is 0 ~ 1%;
Phosphoric acid salt, described phosphatic weight percent is 3 ~ 5%; The total weight percent of above-mentioned each component is 100%.
Describedly use rear Al
2o
3-SiC-C brick reworked material through slagging-off with after deironing process, fragmentation, dusting cover divide, obtain two kinds of granularities different use rear Al
2o
3-SiC-C brick reworked material.Describedly use rear Al
2o
3-SiC-C brick reworked material comprises:
First uses rear Al
2o
3-SiC-C brick reworked material, described first uses rear Al
2o
3the granularity of-SiC-C brick reworked material is 3 ~ 1mm, and weight percent is 10 ~ 40%;
Second uses rear Al
2o
3-SiC-C brick reworked material, described second uses rear Al
2o
3the granularity of-SiC-C brick reworked material is 1 ~ 0mm, and weight percent is 10 ~ 40%.
Here, the granularity of described Wingdale is not more than 2mm; Calcium carbonate CaCO in described Wingdale
3weight percent be greater than 70%.Described Wingdale comprises: the first Wingdale, the second Wingdale; Wherein,
The granularity of described first Wingdale is 2 ~ 0.088mm, and weight percent is 10 ~ 30%;
The granularity of described first Wingdale is for being less than 0.088mm, and weight percent is 10 ~ 30%.
Alumina in described coating comprises: the first alumina, and the granularity of described first alumina is 3 ~ 1mm, and weight percent is 0 ~ 10%; Second alumina, the granularity of described second alumina is 1 ~ 0.088mm, and weight percent is 0 ~ 10%; 3rd alumina, the granularity of described 3rd alumina is for being less than 0.088mm, and weight percent is 0 ~ 20%.
In addition, the granularity of the described alumina powder in described coating is not more than 0.088mm; The granularity of described fine silica powder is not more than 0.088mm; Kyanite granularity used is 100 orders.
The staple length of described regeneration aluminum silicate fiber and described paper fiber is 1 ~ 3mm; Described phosphoric acid salt comprises: tripoly phosphate sodium STPP or Sodium hexametaphosphate 99.
Here, the mixture made by said ratio, when carrying out coating construction, also need to add water, the weight percent of described water is 7 ~ 20%.
Particularly, by above-mentioned weight proportion, first the macrobead in coating composition and fiber are first carried out premix, then all the other compositions are all added in whipping device, stir rear pack and use.Then adopt to be in harmonious proportion and smear or semidrying spraying method by hand, described spray layer thickness is 5 ~ 15mm.Above-mentioned craft is smeared or semidrying spraying method, hot with under cold condition at stirring-head, all can carry out slag adhesion process, after construction, by stirring-head at molten iron surface baking 5 ~ 10min, can come into operation again.
In practical application, when needing the stirring-head coating against binding slags of configuration 100 kilograms, the composition of the coating against binding slags that the embodiment of the present invention provides is as follows:
Described Al
2o
3the weight of-SiC-C can be 42 kilograms; Wherein, described first rear Al is used
2o
3the weight of-SiC-C brick reworked material is 22 kilograms, and second uses rear Al
2o
3the weight of-SiC-C brick reworked material is 20 kilograms.
The weight of described Wingdale can be 30 kilograms; Wherein, the weight of described first Wingdale is can 16 kilograms; The weight of described second Wingdale 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, the weight of described fine silica powder can be 3 kilograms, the weight of described luminite cement can be 2 kilograms, the weight of described kyanite can be 2 kilograms, the weight of described regeneration aluminum silicate fiber can be 0.6 kilogram, the weight of described paper fiber can be 0.4 kilogram, and described phosphatic weight can be 3 kilograms.
Above-mentioned raw materials is added in agitator and stirs, namely obtain required spray material, and pack packaging.During site operation, spraying method can be adopted to construct, add the water of 12% by weight percentage.After construction, stirring-head, molten iron surface baking 5 ~ 10 minutes, then comes into operation.
In addition, when needing the stirring-head coating against binding slags of configuration 100 kilograms, the composition of the coating against binding slags that the embodiment of the present invention provides can also be as follows:
Described Al
2o
3the weight of-SiC-C can be 31 kilograms; Wherein, described first rear Al is used
2o
3the weight of-SiC-C brick reworked material is 15 kilograms, and second uses rear Al
2o
3the weight of-SiC-C brick reworked material is 16 kilograms.
The weight of described Wingdale can be 34 kilograms; Wherein, the weight of described first Wingdale is can 19 kilograms; The weight of described second Wingdale 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, the weight of described fine silica powder can be 4 kilograms, the weight of described luminite cement can be 2 kilograms, the weight of described kyanite can be 2 kilograms, the weight of described regeneration aluminum silicate fiber can be 0.5 kilogram, the weight of described paper fiber can be 0.5 kilogram, and described phosphatic weight can be 4 kilograms.
Above-mentioned raw materials is added in agitator and stirs, namely obtain required spray material, and pack packaging.During site operation, spraying method can be adopted to construct, add the water of 8% by weight percentage.After construction, stirring-head, molten iron surface baking 5 ~ 10 minutes, then comes into operation.
Stirring-head coating against binding slags provided by the invention, with useless brick for main raw material(s), can significantly reduce costs; Be bonding agent with luminite cement, reach the object of rapid solidification; Be part powder with clay, utilize the adhesion property of clay, reduce rebound rate, increase operation rate; By the toughening effect of fiber, improve quick baking applicable performance; Do dispersion agent with micro mist, improve mixing uniformity, phosphoric acid salt is water reducer, reduces spraying application water consumption.In addition, stirring-head coating against binding slags provided by the invention effectively can prevent the dry slag of stirring-head, improves the work-ing life of stirring-head, is not only applicable to KR stirring-head, is also applicable to other stirring-heads, is easy to promote.
The above, be only preferred embodiment of the present invention, be not intended to limit protection scope of the present invention, and all any amendments done within the spirit and principles in the present invention, equivalent replacement and improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. a stirring-head coating against binding slags, is characterized in that, the chemical composition of described coating comprises:
With rear aluminum-silicon carbide brick Al
2o
3-SiC-C brick reworked material, describedly uses rear Al
2o
3the weight percent of-SiC-C brick reworked material is 30 ~ 60%;
Wingdale, the weight percent of described Wingdale is 25 ~ 50%;
Alumina, the weight percent of described alumina is 0 ~ 20%;
Alumina powder, the weight percent of described alumina powder is 1 ~ 3%;
Fine silica powder, the weight percent of described fine silica powder is 3 ~ 5%;
Luminite cement, the weight percent of described luminite cement is 1 ~ 2%;
Kyanite, the weight percent of described kyanite is 1 ~ 5%;
Regeneration aluminum silicate fiber, the weight percent of described regeneration aluminum silicate fiber is 0 ~ 1%;
Paper fiber, the weight percent of described paper fiber is 0 ~ 1%;
Phosphoric acid salt, described phosphatic weight percent is 3 ~ 5%.
2. coating according to claim 1, is characterized in that, describedly uses rear Al
2o
3-SiC-C brick reworked material comprises:
First uses rear Al
2o
3-SiC-C brick reworked material, described first uses rear Al
2o
3the granularity of-SiC-C brick reworked material is 3 ~ 1mm, and weight percent is 10 ~ 40%;
Second uses rear Al
2o
3-SiC-C brick reworked material, described second uses rear Al
2o
3the granularity of-SiC-C brick reworked material is 1 ~ 0mm, and weight percent is 10 ~ 40%.
3. coating according to claim 1, is characterized in that, the granularity of described Wingdale is not more than 2mm; Calcium carbonate CaCO in described Wingdale
3weight percent be greater than 70%.
4. coating according to claim 3, is characterized in that, wherein, described Wingdale comprises: the first Wingdale, the second Wingdale; Wherein,
The granularity of described first Wingdale is 2 ~ 0.088mm, and weight percent is 10 ~ 30%;
The granularity of described first Wingdale is for being less than 0.088mm, and weight percent is 10 ~ 30%.
5. coating according to claim 1, is characterized in that, described alumina comprises:
First alumina, the granularity of described first alumina is 3 ~ 1mm, and weight percent is 0 ~ 10%;
Second alumina, the granularity of described second alumina is 1 ~ 0.088mm, and weight percent is 0 ~ 10%;
3rd alumina, the granularity of described 3rd alumina is for being less than 0.088mm, and weight percent is 0 ~ 20%.
6. coating according to claim 1, is characterized in that, the granularity of described alumina powder is not more than 0.088mm.
7. coating according to claim 1, is characterized in that, the granularity of described fine silica powder is not more than 0.088mm.
8. coating according to claim 1, is characterized in that, kyanite granularity used is 100 orders.
9. coating according to claim 1, is characterized in that, the staple length of described regeneration aluminum silicate fiber and described paper fiber is 1 ~ 3mm.
10. coating according to claim 1, is characterized in that, described phosphoric acid salt comprises: tripoly phosphate sodium STPP or Sodium hexametaphosphate 99.
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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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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410538999.5A CN104310888B (en) | 2014-10-13 | 2014-10-13 | A kind of stirring-head coating against binding slags |
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| CN104310888A true CN104310888A (en) | 2015-01-28 |
| CN104310888B CN104310888B (en) | 2016-08-03 |
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| CN107686362A (en) * | 2017-09-18 | 2018-02-13 | 北京利尔高温材料股份有限公司 | A kind of stirring-head slag adhesion interleaving agent and preparation method thereof |
| CN109248572A (en) * | 2018-10-09 | 2019-01-22 | 鞍钢股份有限公司 | A kind of method of the anti-incrustation of agitating paddle |
| CN110055369A (en) * | 2019-05-21 | 2019-07-26 | 武汉钢铁有限公司 | Molten iron KR desulfurization blender dry slag quickly cleans method |
| 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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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107686362A (en) * | 2017-09-18 | 2018-02-13 | 北京利尔高温材料股份有限公司 | A kind of stirring-head slag adhesion interleaving agent and preparation method thereof |
| 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 |
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| CN109248572B (en) * | 2018-10-09 | 2021-04-27 | 鞍钢股份有限公司 | Method for preventing scab of stirring paddle |
| CN110055369A (en) * | 2019-05-21 | 2019-07-26 | 武汉钢铁有限公司 | Molten iron KR desulfurization blender dry slag quickly cleans method |
| 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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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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