CN103044040B - Anhydrous stemming for tapping hole of blast furnace and preparation method thereof - Google Patents
Anhydrous stemming for tapping hole of blast furnace and preparation method thereof Download PDFInfo
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- CN103044040B CN103044040B CN201210578569.7A CN201210578569A CN103044040B CN 103044040 B CN103044040 B CN 103044040B CN 201210578569 A CN201210578569 A CN 201210578569A CN 103044040 B CN103044040 B CN 103044040B
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Abstract
The invention relates to anhydrous stemming for a tapping hole of a blast furnace. The anhydrous stemming comprises the following raw materials in percentage by weight: 10 to 30 percent of brown fused alumina of 3 to 0 mm, 10 to 20 percent of bauxite clinker smaller than 0.088 mm, 4 to 10 percent of silicon carbide smaller than 0.088 mm, 10 to 20 percent of soft clay smaller than 0.088 mm, 5 to 15 percent of coke powder of 3 to 1 mm, 10 to 20 percent of coke powder of 1 to 0 mm, 10 to 15 percent of silica of 3 to 1 mm and 10 to 20 percent of ferro-silicon nitride smaller than 0.088 mm. A preparation method for the anhydrous stemming comprises the following steps: (a) weighing the raw materials according to the proportion, pouring the raw materials into a heating type edge runner mill, performing dry-blending for 20 to 30 minutes, adding hot tar with the oil temperature of 80 DEG C, controlling the temperature of the mill to be 70 to 80 DEG C, performing wet mixing for 35 to 45 minutes, and measuring the Marshall value of pug at the temperature of 50 DEG C to be 650 to 680 KPa; and (b) entering a mud extruding machine through a disc feeding machine, extruding mud and wrapping by using a plastic film to obtain the finished product, placing the finished product mud into a hopper and ageing for 48 hours to use. According to the invention, the iron slag scouring resistance is high, the iron notch hole is smooth, the aperture change is little, the corrosion resistance is excellent, spattering during tapping is avoided, the tapping time is long, the mud beating pressure is proper, and the opening performance is excellent.
Description
Technical field:
The invention belongs to Anhydrous stemming for blast furnace and preparation method thereof.
Background technology:
Existing 6 blast furnaces of NeiMenggu BaoGang GangLian Co., Ltd's iron work, total heat size reaches 12380M
3, wherein, 2200 M
3above 4, possesses the throughput of producing 1000 ten thousand tons of iron per year, in recent years, due to the raising of Under Different Concentrate Supplementing Level, high wind-warm syndrome, press on high top, the application of the enhancements such as oxygen-enriched coal spray, combustion intensity is more and more higher, and the working conditions of tamping plug for blast furnace spout is more and more severe, more and more higher to the requirement of anhydrous stemming.2008, BAOGANG GROUP company was because undergoing technological transformation, and iron work grinds mud workshop to be removed, and the annual 10000 tons of anhydrous stemmings of iron work need whole outsourcings to guarantee iron work need of production, need to spend a large amount of funds, have greatly improved the production cost of enterprise.
Summary of the invention:
The object of this invention is to provide one and not only can reduce BAOGANG GROUP company outsourcing stemming fund expenditure, simultaneously to existing, enhance product performance, meet better the production of blast furnace, improve enterprise economic benefit a kind of No-water stemming material for blast furnace taphole and its preparation.
The object of the invention is to be realized by following methods:
A kind of no-water stemming material for blast furnace taphole, its material composition is by weight percentage:
The preparation method of described no-water stemming material for blast furnace taphole is as follows,
(a) above-mentioned various raw materials are weighed and poured in heating-type wheel roller by proportioning, be dry mixed 20～30 minutes, then add the thermal tar of 80 ℃ of oil temperatures, in grinding, temperature is controlled at 70-80 ℃, wet mixing 35～45 minutes, the horse summer value of then measuring 50 ℃ of pugs is 650-680KPa, if measure the horse summer value of 50 ℃ of pugs, does not meet 650-680KPa requirement, need to increase mixing time or increase tar content and continue to adjust, until meet;
(b), by the test passes making in step (a) through squeezing after mud and encase and be finished product with plastic film in disc feeder entering mud extruder, finished product mud is put into hopper, ageing mixture 48 hours, obtains no-water stemming material for blast furnace taphole of the present invention.
Beneficial effect: the present invention is take brown corundum as aluminum-containing raw material with blast furnace stemming, take bauxite chamotte as matrix, take coke as carbon element, in matrix with addition of high quality carbon SiClx, adopt the coal tar of Baogang coking Factory to make bonding agent, through batching, after heating-type wheel roller mixes, through squeezing mud, form again, in order further to strengthen matrix, in matrix, introducing Special Anti etchant is optimized matrix, thereby improved the corrosion resistance of stemming, in order to make stemming there is micro-expansibility, in particle, introduce swelling agent, at high temperature utilizing transformation of crystal to produce expands, improved the associativity of new and old stemming.In use, anti-scum erosion is good for this stemming, and iron mouth pore passage is smooth, and varying aperture is little, and erosion-resisting characteristics is good, not splash while tapping a blast furnace, and the time of tapping a blast furnace is long, beats mud pressure suitable, and opening performance is good, can meet the requirement of intensification of smelting process in BF.
Embodiment:
Embodiment 1
A kind of no-water stemming material for blast furnace taphole, its material composition is by weight percentage:
A kind of preparation method of no-water stemming material for blast furnace taphole is as follows:
(a) various raw materials are weighed and poured in heating-type wheel roller by proportioning, be dry mixed 20 minutes, then add thermal tar (80 ℃ of oil temperatures), in grinding, temperature is controlled at 70-80 ℃, wet mixing 40 minutes, the horse summer value of then measuring 50 ℃ of pugs is 650-680KPa, if measure the horse summer value of 50 ℃ of pugs, does not meet 650-680KPa requirement, need to increase mixing time or increase tar content and continue to adjust, until meet.
(b), by the pug of the test passes making in step (a), after squeezing mud in disc feeder enters mud extruder, with plastic film, encase and be finished product, finished product mud is put into hopper, and ageing mixture obtains no-water stemming material for blast furnace taphole of the present invention for 48 hours later.
Embodiment 2
A kind of no-water stemming material for blast furnace taphole, its material composition is by weight percentage:
Embodiment 3
A kind of no-water stemming material for blast furnace taphole, its material composition is by weight percentage:
The method of embodiment 2 and embodiment 3 is identical with embodiment 1.
The present invention, anti-scum erosion is good, and iron mouth pore passage is smooth, and varying aperture is little, and erosion-resisting characteristics is good, not splash while tapping a blast furnace, the time of tapping a blast furnace is long, beats mud pressure suitable, and opening performance is good.
Claims (1)
1. a no-water stemming material for blast furnace taphole, is characterized in that: material composition is by weight percentage:
A kind of preparation method of described no-water stemming material for blast furnace taphole is as follows:
(a) above-mentioned various raw materials are weighed and poured in heating-type wheel roller by proportioning, be dry mixed 20～30 minutes, then add the thermal tar of 80 ℃ of oil temperatures, in grinding, temperature is controlled at 70-80 ℃, wet mixing 35～45 minutes, the horse summer value of then measuring 50 ℃ of pugs is 650-680kPa, if measure the horse summer value of 50 ℃ of pugs, does not meet 650-680kPa requirement, need to increase mixing time or increase tar content and continue to adjust, until meet;
(b) pug that is 650-680kPa by the horse summer value of 50 ℃ making in step (a) encases with plastic film after squeezing mud in disc feeder enters mud extruder, puts into hopper, and ageing mixture 48 hours, obtains no-water stemming material for blast furnace taphole.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210578569.7A CN103044040B (en) | 2012-12-27 | 2012-12-27 | Anhydrous stemming for tapping hole of blast furnace and preparation method thereof |
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| CN201210578569.7A CN103044040B (en) | 2012-12-27 | 2012-12-27 | Anhydrous stemming for tapping hole of blast furnace and preparation method thereof |
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| CN103044040A CN103044040A (en) | 2013-04-17 |
| CN103044040B true CN103044040B (en) | 2014-05-07 |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103724025A (en) * | 2013-12-27 | 2014-04-16 | 广西铁合金有限责任公司 | Reparative waterless stemming for large-size submerged arc furnace taphole |
| CN105110802A (en) * | 2015-07-28 | 2015-12-02 | 无锡市宝宜耐火材料有限公司 | Stemming for blast furnace hearth and preparation method thereof |
| CN105330316A (en) * | 2015-12-09 | 2016-02-17 | 武钢集团昆明钢铁股份有限公司 | Iron notch pug sleeve pug and preparation method and application method thereof |
| CN105314995A (en) * | 2015-12-09 | 2016-02-10 | 武钢集团昆明钢铁股份有限公司 | Hydrous taphole loam and preparation method thereof |
| CN108503382A (en) * | 2018-05-09 | 2018-09-07 | 宜兴市龙宸炉料有限公司 | It is a kind of to mitigate the processing method that nuisance overflows in anhydrous stemming production process |
| CN108658588A (en) * | 2018-06-19 | 2018-10-16 | 佘春霞 | A kind of corrosion-resistant low-coumption anhydrous stemming of large blast furnace iron mouth |
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| CN101580397A (en) * | 2009-06-16 | 2009-11-18 | 武汉钢铁(集团)公司 | Blast furnace mud gun with low content of benzopyrene |
| CN102020481A (en) * | 2011-01-04 | 2011-04-20 | 马鞍山钢铁股份有限公司 | Novel anhydrous stemming for blast furnace |
| CN102180682A (en) * | 2011-03-08 | 2011-09-14 | 沈阳东北大学冶金技术研究所有限公司 | Siliceous stemming for filling blast furnace taphole and preparation method thereof |
| CN102336574A (en) * | 2010-07-27 | 2012-02-01 | 辽宁科技大学 | Method for producing waterless taphole mix for blast furnace from high-alumina waste refractory materials |
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Patent Citations (5)
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| CN1850728A (en) * | 2006-05-19 | 2006-10-25 | 王恩余 | Blast furnace taphole Al2O3-SiC-C system no-water cannon mire |
| CN101580397A (en) * | 2009-06-16 | 2009-11-18 | 武汉钢铁(集团)公司 | Blast furnace mud gun with low content of benzopyrene |
| CN102336574A (en) * | 2010-07-27 | 2012-02-01 | 辽宁科技大学 | Method for producing waterless taphole mix for blast furnace from high-alumina waste refractory materials |
| CN102020481A (en) * | 2011-01-04 | 2011-04-20 | 马鞍山钢铁股份有限公司 | Novel anhydrous stemming for blast furnace |
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