CN1978590A - Hot-state repair method of bottom refractory brick for coke furnace carbonization chamber - Google Patents

Hot-state repair method of bottom refractory brick for coke furnace carbonization chamber Download PDF

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Publication number
CN1978590A
CN1978590A CN 200510022311 CN200510022311A CN1978590A CN 1978590 A CN1978590 A CN 1978590A CN 200510022311 CN200510022311 CN 200510022311 CN 200510022311 A CN200510022311 A CN 200510022311A CN 1978590 A CN1978590 A CN 1978590A
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China
Prior art keywords
coking chamber
repair
brick
repairing
heat
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Pending
Application number
CN 200510022311
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Chinese (zh)
Inventor
杨天旺
龙寿辉
陈文军
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Panzhihua New Steel and Vanadium Co Ltd
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Panzhihua New Steel and Vanadium Co Ltd
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Publication date
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Priority to CN 200510022311 priority Critical patent/CN1978590A/en
Publication of CN1978590A publication Critical patent/CN1978590A/en
Pending legal-status Critical Current

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Abstract

The invention discloses a heating repair method of the firebrick in bottom of the coke-oven charring room. The process includes: preparing the repair material, cleaning the charring room and repairing the masonry. The firebrick is selective and heated. The repairing pug is matched and kept the temperature after cleaning the charring room, last to repair the masonry above 800DEG C. The invention can avoid the firebrick crack to prolong the coke-oven life comparing to the cooling repair. The life of the repairing part can reach above 60 months by selecting the alumina brick, so it can save the cooling time and the energy.

Description

A kind of hot-state repair method of bottom refractory brick for coke furnace carbonization chamber
Technical field
The present invention relates to a kind of coke oven examination and repair method, relate in particular to the method for repairing and mending of not lowering the temperature of coking chamber bottom refractory brick.
Background technology
In actual coking is produced, the coking chamber bottom refractory brick of coke oven usually is subjected to the coke pushing friction to impact, build by laying bricks or stones with factor affecting such as correction of the defect and damage very easily, and therefore repairing quality and the working efficiency that improves the coking chamber bottom refractory brick just seems very important.In the prior art, repairing the coking chamber bottom refractory brick is to adopt the cooling method for repairing and mending, and the benefit of this method is to a certain degree to alleviate maintainer's labour intensity, but the problem of its existence and defective also are conspicuous:
1, because the refractory brick that coking chamber adopts has the not special property of anti-rapid heat cycle, the coking chamber temperature reduced to below 400 ℃ repair, too fast or temperature can occur because of cooling rate falls lowly excessively, the refractory brick generation strain crack that causes and form new damage hidden danger, cause shorten the work-ing life of coking chamber refractory brick, form vicious cycle.
2, cooling can cause the repair time to prolong, and has reduced production efficiency, needs to heat up after the coking chamber cooling is repaired, and has increased energy consumption.
Summary of the invention
For overcoming problem and the defective that above-mentioned cooling method for repairing and mending exists, the present invention proposes a kind of the cooling and repairs the method for bottom refractory brick for coke furnace carbonization chamber, purpose is to eliminate cooling and repairs the problem that makes the damage of highiy refractory brick generation strain crack, also can increase substantially repairing efficiency, energy efficient simultaneously.
A kind of hot-state repair method of bottom refractory brick for coke furnace carbonization chamber, processing step comprises preparation repair material, cleaning coking chamber, repairs and build by laying bricks or stones, it is characterized in that carrying out selection and thermal pretreatment with repairing used refractory brick, prepare and repair required pug, behind the cleaning coking chamber, it is incubated, under not cooling condition, the coking chamber bottom is repaired.
Described refractory brick selection is meant: as the refractory brick of repairing the coking chamber bottom, its main physical and chemical index is with high alumina brick: refractoriness>1790 ℃; Load softening point<1430 ℃; Show the empty rate 21% of gas; Linear rate of expansion+0.03%; Volume density 2700kg/m3; High volume stability 9 times.
Described refractory brick thermal pretreatment is meant: the high alumina brick that will repair usefulness shifts to an earlier date preheating, and the first step is preheating to 300 ℃ with the heat-up rate of 25 ℃/h; The heat-up rate of second step with 35~40 ℃/h is preheating to 700~800 ℃.
Described preparation is repaired pug and is meant: with content is that 100% clay chamotte and content are 50~80% phosphoric acid, and the proportioning by 1: 0.8~1.5 is prepared the employed pug of building by laying bricks or stones and be in the milk.
Described cleaning coking chamber is meant: after treating that the heat (batch) number that need repair has pushed away coke and regained pushing ram, remove coking chamber bottom residual coke, remove and finishing coking chamber bottom needs the second-hand brick changed, and purge position totally to be repaired with pressurized air, close bridge tube place turnover panel simultaneously, open the upcast lid.
Described coking chamber insulation is meant: at fire door interim heat-insulation and heat-preservation fire door is installed behind the cleaning coking chamber, is kept the coking chamber temperature more than 800 ℃.
Described repairing is built by laying bricks or stones and is meant: according to the shape and size of waiting to repair the position of repairing out, the high alumina brick after the preheating is carried out correspondence processing, under temperature condition more than 800 ℃ be in the milk and lay bricks in position to be repaired, coking chamber bottom then.
Compare with the cooling repairing, the present invention can avoid coking chamber refractory brick because of strain crack takes place in the cooling repairing, and being highly advantageous to prolongs the coke oven life-span, facts have proved that the present invention selects for use its life-span of position of high alumina brick reparation to reach more than 60 months; Owing to do not need cooling, both saved the cooling required time, saved the energy again.
Embodiment
Embodiment 1
A kind of hot-state repair method of bottom refractory brick for coke furnace carbonization chamber the steps include: 1, selects high alumina brick fully, and its physical and chemical index is: 1800 ℃ of refractoriness, 1400 ℃ of load softening points show the empty rate 20% of gas, linear rate of expansion+0.031%, volume density 2700kg/m3, high volume stability 9 times; 2, shift to an earlier date the preheating high alumina brick by the repair time: the heat-up rate with 25 ℃/h is preheating to 300 ℃ earlier, and the heat-up rate with 35 ℃/h is preheating to 720 ℃ again; 3, adopt the phosphoric acid of 60 parts of 100% clay chamotte and 60% to prepare for 80 parts to build by laying bricks or stones and be in the milk and use pug; 4, cleaning coking chamber: after treating that the heat (batch) number that need repair has pushed away coke and regained pushing ram, remove coking chamber bottom residual coke, remove and finishing coking chamber bottom needs the second-hand brick changed, and purge position totally to be repaired with pressurized air, close bridge tube place turnover panel simultaneously, open the upcast lid; 5, coking chamber insulation: at fire door interim heat-insulation and heat-preservation fire door is installed behind the cleaning coking chamber, is adjusted the heating cycle of coke oven, control coking chamber temperature is at 900 ℃; 6, repair and to build by laying bricks or stones: the shape and size of repairing out according to damaged location, high alumina brick after the preheating is processed, under 900 ℃ of temperature condition, coking chamber bottom damaged location is in the milk then and builds by laying bricks or stones, remove unnecessary mortar, clean with air purge, the floating processing of being in the milk.
Embodiment 2
A kind of hot-state repair method of bottom refractory brick for coke furnace carbonization chamber the steps include: 1, selects high alumina brick fully, and its physical and chemical index is: 1830 ℃ of refractoriness, 1410 ℃ of load softening points show the empty rate 19% of gas, linear rate of expansion+0.031%, volume density 2700kg/m3, high volume stability 9 times; 2, shift to an earlier date the preheating high alumina brick by the repair time: the heat-up rate with 25 ℃/h is preheating to 300 ℃ earlier, and the heat-up rate with 40 ℃/h is preheating to 780 ℃ again; 3, adopt the phosphoric acid of 60 parts of 100% clay chamotte and 70% to prepare for 85 parts to build by laying bricks or stones and be in the milk and use pug; 4, cleaning coking chamber: after treating that the heat (batch) number that need repair has pushed away coke and regained pushing ram, remove coking chamber bottom residual coke, remove and finishing coking chamber bottom needs the second-hand brick changed, and purge position totally to be repaired with pressurized air, close bridge tube place turnover panel simultaneously, open the upcast lid; 5, coking chamber insulation: at fire door interim heat-insulation and heat-preservation fire door is installed behind the cleaning coking chamber, is adjusted the heating cycle of coke oven, control coking chamber temperature is at 850 ℃; 6, repair and to build by laying bricks or stones: the shape and size of repairing out according to damaged location, high alumina brick after the preheating is processed, under 850 ℃ of temperature condition, coking chamber bottom damaged location is in the milk then and builds by laying bricks or stones, remove unnecessary mortar, clean with air purge, the floating processing of being in the milk.
Embodiment 3
A kind of hot-state repair method of bottom refractory brick for coke furnace carbonization chamber the steps include: 1, selects high alumina brick fully, and its physical and chemical index is: 1800 ℃ of refractoriness, 1400 ℃ of load softening points show the empty rate 20% of gas, linear rate of expansion+0.029%, volume density 2685kg/m3, high volume stability 10 times; 2, shift to an earlier date the preheating high alumina brick by the repair time: the heat-up rate with 25 ℃/h is preheating to 300 ℃ earlier, and the heat-up rate with 38 ℃/h is preheating to 760 ℃ again; 3, adopt the phosphoric acid of 60 parts of 100% clay chamotte and 75% to prepare for 55 parts to build by laying bricks or stones and be in the milk and use pug; 4, cleaning coking chamber: after treating that the heat (batch) number that need repair has pushed away coke and regained pushing ram, remove coking chamber bottom residual coke, remove and finishing coking chamber bottom needs the second-hand brick changed, and purge position totally to be repaired with pressurized air, close bridge tube place turnover panel simultaneously, open the upcast lid; 5, coking chamber insulation: at fire door interim heat-insulation and heat-preservation fire door is installed behind the cleaning coking chamber, is adjusted the heating cycle of coke oven, control coking chamber temperature is at 870 ℃; 6, repair and to build by laying bricks or stones: the shape and size of repairing out according to damaged location, high alumina brick after the preheating is processed, under 870 ℃ of temperature condition, coking chamber bottom damaged location is in the milk then and builds by laying bricks or stones, remove unnecessary mortar, clean with air purge, the floating processing of being in the milk.

Claims (7)

1, a kind of hot-state repair method of bottom refractory brick for coke furnace carbonization chamber, processing step comprises preparation repair material, cleaning coking chamber, repairs and build by laying bricks or stones, it is characterized in that carrying out selection and shifting to an earlier date thermal pretreatment with repairing used refractory brick, pug is repaired in preparation, cleaning coking chamber and insulation are repaired coking chamber bottom damaged location under not cooling condition and are built by laying bricks or stones.
2, method according to claim 1, it is characterized in that described refractory brick selection is meant: select for use high alumina brick as the refractory brick of repairing the coking chamber bottom, its main physical and chemical index is: refractoriness>1790 ℃, load softening point<1430 ℃, show the empty rate 19~20% of gas, linear rate of expansion+0.029~0.031%, volume density 2600~2700kg/m3, high volume stability 9~10 times.
3, method according to claim 1 is characterized in that described refractory brick thermal pretreatment is meant: the high alumina brick that will repair usefulness is preheating to 300 ℃ with the heat-up rate of 25 ℃/h, and the heat-up rate with 35~40 ℃/h is preheating to 700~800 ℃ again.
4, method according to claim 1, it is characterized in that described preparation repairs pug and be meant: with content is that 100% clay chamotte and content are 50~80% phosphoric acid, and the proportioning by 1: 0.8~1.5 is prepared and built high alumina brick by laying bricks or stones and be in the milk employed pug.
5, method according to claim 1, it is characterized in that described cleaning coking chamber is meant: after treating that heat (batch) number that needs are repaired has pushed away coke and regained pushing ram, remove coking chamber bottom residual coke, remove and finishing coking chamber bottom needs the second-hand brick changed, and purge position totally to be repaired with pressurized air, close bridge tube place turnover panel simultaneously, open the upcast lid.
6, method according to claim 1 is characterized in that described coking chamber insulation is meant: at fire door interim heat-insulation and heat-preservation fire door is installed behind the cleaning coking chamber, is kept the coking chamber temperature more than 800 ℃.
7, method according to claim 1 or 5, it is characterized in that described repairing is built by laying bricks or stones is meant: the shape and size of repairing out according to coking chamber bottom damaged location, high alumina brick to preheating is processed, and under temperature condition more than 800 ℃ is in the milk in position to be repaired, coking chamber bottom then and builds by laying bricks or stones.
CN 200510022311 2005-12-10 2005-12-10 Hot-state repair method of bottom refractory brick for coke furnace carbonization chamber Pending CN1978590A (en)

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Application Number Priority Date Filing Date Title
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Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100543397C (en) * 2007-11-27 2009-09-23 攀枝花新钢钒股份有限公司 Stove wall covering thermal-state rapid repairing method and special equipment thereof
CN101805622A (en) * 2010-04-15 2010-08-18 南京钢铁股份有限公司 Hot patching process for bottom brick of carbonization chamber of coke oven
CN101974339A (en) * 2010-11-03 2011-02-16 芜湖新兴铸管有限责任公司 Repairing method of coking chamber of coke oven by using silica bricks
CN102171311A (en) * 2008-10-06 2011-08-31 新日本制铁株式会社 Repair method and repair device for wall surface of coke oven chamber at bottom edge thereof
CN101618967B (en) * 2008-07-02 2012-01-04 北京瑞普同创科技发展有限公司 Dry coke quenching furnace circular passage tilt channel regional patching material
CN102424753A (en) * 2011-10-27 2012-04-25 马钢(集团)控股有限公司 Method for repairing bricks at bottom of carbonization chamber of large coke oven
CN101381607B (en) * 2008-10-06 2012-10-03 中冶宝钢技术服务有限公司 Manual repair technique of coking chamber wall
CN103710034A (en) * 2014-01-02 2014-04-09 东台市节能耐火材料厂 Thermal state replacement and maintenance method for heat recovery coke oven gas collector
CN104342175A (en) * 2013-07-30 2015-02-11 中国一冶集团有限公司 Method for hot repairing of local damage of coking chamber wall of coke oven
CN104557085A (en) * 2014-12-30 2015-04-29 武钢集团昆明钢铁股份有限公司 200-kg experiment coke oven masonry material and application thereof
CN109294601A (en) * 2017-07-25 2019-02-01 广东韶钢松山股份有限公司 A kind of carbonizing chamber of coke oven bottom fast repairing method
CN113416082A (en) * 2021-07-14 2021-09-21 中国人民解放军海军工程大学 Repair method of refractory container

Cited By (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100543397C (en) * 2007-11-27 2009-09-23 攀枝花新钢钒股份有限公司 Stove wall covering thermal-state rapid repairing method and special equipment thereof
CN101618967B (en) * 2008-07-02 2012-01-04 北京瑞普同创科技发展有限公司 Dry coke quenching furnace circular passage tilt channel regional patching material
CN102171311B (en) * 2008-10-06 2013-08-21 新日铁住金株式会社 Repair method and repair device for wall surface of coke oven chamber at bottom edge thereof
CN101381607B (en) * 2008-10-06 2012-10-03 中冶宝钢技术服务有限公司 Manual repair technique of coking chamber wall
CN102171311A (en) * 2008-10-06 2011-08-31 新日本制铁株式会社 Repair method and repair device for wall surface of coke oven chamber at bottom edge thereof
CN101805622A (en) * 2010-04-15 2010-08-18 南京钢铁股份有限公司 Hot patching process for bottom brick of carbonization chamber of coke oven
CN101805622B (en) * 2010-04-15 2013-01-02 南京钢铁股份有限公司 Hot patching process for bottom brick of carbonization chamber of coke oven
CN101974339A (en) * 2010-11-03 2011-02-16 芜湖新兴铸管有限责任公司 Repairing method of coking chamber of coke oven by using silica bricks
CN101974339B (en) * 2010-11-03 2013-04-03 芜湖新兴铸管有限责任公司 Repairing method of coking chamber of coke oven by using silica bricks
CN102424753A (en) * 2011-10-27 2012-04-25 马钢(集团)控股有限公司 Method for repairing bricks at bottom of carbonization chamber of large coke oven
CN102424753B (en) * 2011-10-27 2013-08-07 马钢(集团)控股有限公司 Method for repairing bricks at bottom of carbonization chamber of large coke oven
CN104342175A (en) * 2013-07-30 2015-02-11 中国一冶集团有限公司 Method for hot repairing of local damage of coking chamber wall of coke oven
CN104342175B (en) * 2013-07-30 2016-09-21 中国一冶集团有限公司 The method of coke oven hot repair carbonization chamber wall local damage
CN103710034A (en) * 2014-01-02 2014-04-09 东台市节能耐火材料厂 Thermal state replacement and maintenance method for heat recovery coke oven gas collector
CN104557085A (en) * 2014-12-30 2015-04-29 武钢集团昆明钢铁股份有限公司 200-kg experiment coke oven masonry material and application thereof
CN104557085B (en) * 2014-12-30 2016-08-17 武钢集团昆明钢铁股份有限公司 A kind of 200kg Experiment Coke Oven builds material and application thereof by laying bricks or stones
CN109294601A (en) * 2017-07-25 2019-02-01 广东韶钢松山股份有限公司 A kind of carbonizing chamber of coke oven bottom fast repairing method
CN109294601B (en) * 2017-07-25 2021-04-30 广东韶钢松山股份有限公司 Rapid repairing method for bottom of carbonization chamber of coke oven
CN113416082A (en) * 2021-07-14 2021-09-21 中国人民解放军海军工程大学 Repair method of refractory container

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