CN102191066A - Coke dry quenching slope air course supporting brick overhaul construction process - Google Patents

Coke dry quenching slope air course supporting brick overhaul construction process Download PDF

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Publication number
CN102191066A
CN102191066A CN2010101167047A CN201010116704A CN102191066A CN 102191066 A CN102191066 A CN 102191066A CN 2010101167047 A CN2010101167047 A CN 2010101167047A CN 201010116704 A CN201010116704 A CN 201010116704A CN 102191066 A CN102191066 A CN 102191066A
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brick
air course
slope air
stones
laying bricks
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CN102191066B (en
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任社安
程爱民
王建
杨勇
蔡伟
王志宏
谭春华
徐铁权
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China MCC5 Group Corp Ltd
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MCC5 Group Shanghai Corp Ltd
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Abstract

The invention discloses a coke dry quenching slope air course supporting brick overhaul construction process, which comprises the following steps: a) mounting a suspended ceiling supporting device; b) removing part of refractory bricks of a pillar of the slope air course; c) mounting an piece for anchoring the root part of the pillar of the oblique air course; d) providing castable and making castable prefabricated bricks; e) constructing the castable and building the castable prefabricated bricks; and f) removing the ceiling supporting device. The coke dry quenching slope air course supporting brick overhaul construction process has the advantages of prolonging the service life of the supporting part of the slope air course, reducing overhaul construction period, reducing maintenance cost and saving production cost.

Description

The dry coke quenching slope air course supports brick maintenance construction technology
Technical field
The invention belongs to stove maintenance technical field of construction, specifically, is that a kind of dry coke quenching slope air course supports brick maintenance construction technology.
Background technology
In order to adapt to the national environmental protection requirement, the successively newly-built big volume dry coke quenching in domestic most of steel mills and coke-oven plant replaces wet quenching.Dry coke quenching is on structure design, and the slope air course position is crucial, and slope air course supports the weight (about 200t) that brick will bear the inner anti-material of top partition wall and ring air channel on the one hand, in the production process body of heater partially in, slope air course support brick bears weight offset, discontinuity; Be slope air course position refractory materials work under bad environment on the other hand, be subjected to the temperature fusion for a long time, rapid heat cycle, influences such as blast air washes away, the friction of coke, chemical etching effect, cause the slope air course position to support the brick fracture thus, anti-material is impaired fastest, is the life-span bottleneck of the anti-material of whole coke dry quenching body, life-span is only about more than 1 year, and about 8 years of anti-material life-span of other positions of body.
Therefore known slope air course position is supported brick and is existed above-mentioned all inconvenience and problem.
Summary of the invention
Purpose of the present invention is to propose a kind of dry coke quenching slope air course of furred ceiling technology that uses and supports brick maintenance construction technology.
For achieving the above object, technical solution of the present invention is:
A kind of dry coke quenching slope air course supports brick maintenance construction technology, it is characterized in that may further comprise the steps:
A) the furred ceiling supportive device being installed makes the ring-type suspender with chain block, wireline and mistake dome brick strut member and draws high slope air course and cross dome brick top masonry, apply the integral body opposite and lift prestress with slope air course pillar upper, annular masonry deadweight direction, when preventing that the slope air course pillar from separating body construction, cause that the top masonry sinks, and supported the dome brick bottom with screw block;
B) remove slope air course leg portion refractory brick
Remove loosening brick when removing the pillar brick, remove 63 layers from top to bottom from the 75th layer, because pillar brick upper layer is that the fissure of displacement is built by laying bricks or stones, the refractory brick size differs, to the dismounting of holing of the long brick of size, the number of plies is 75,73,71,69,67,65,63 layers successively, and other layers can directly take out, and 75 fault ruptures place can be removed; Adopt special-purpose drilling machine during disintegration, every block of charing silica brick need bore 2-3 hole, just can smash charing silica brick, the charing silica brick that taking-up should be removed;
C) slope air course pillar root anchoring piece is installed
Slope air course pillar root anchoring piece is installed be may further comprise the steps:
1) be that 60mm, diameter are the hole of 14mm with general Wicresoft drilling method the 62nd, 63,64 layer of refractory brick position drilled in middle length;
2) in the hole of described diameter phi 14mm, squeeze into the expansion bolt of φ 12mm, " Y " type anchoring piece of making at described expansion bolt afterbody welding φ 12mm round steel,
Wherein: the long 60mm of expansion bolt, the partly long 130mm of the round steel of anchoring piece, the long 30mm of empennage, 60 ° of two empennage angles;
3) described expansion bolt is reached the last and the anchoring piece cast time should be wrapped with the plastic colloidal cloth that thickness is 1mm, installs the floating ash that should remove the brick face behind expansion bolt, the anchoring piece;
It is advisable with the top of anchoring piece and the about 50mm-60mm of spacing of windward side in the length of the described anchoring piece of pouring position, and described expansion bolt, anchoring piece adopt the heat-resistance stainless steel material of 0Cr25Ni20 (310S);
4) boring is wanted slowly, installs the floating ash that should remove the brick face behind expansion bolt, the anchoring piece, adopts high viscose glue body to handle at the brick face of pouring position, increases the associativity of mould material and refractory brick.
D) provide mould material and the casting material prefabricated brick of making
Described mould material is to be prepared by mullite silicon carbide, described mould material contains following raw materials by weight percent composition: aggregate 68~75%, matrix 23~30%, stainless steel heat-resistant fiber 1.5~2.0%, wherein aggregate partly contains following weight percent composition: high-purity low iron mullite synthesizing 45~55%, superfine silicon carbide 12~16%, matrix partly contains following weight percent composition: high purity silica powder 5~9%, carbide fine powder 4~8%, rafifinal hydrochlorate 5~8%, active alpha-Al 2O 34~6%; Size and the profile described mould material identical according to former refractory brick, and add 4 heat-resisting reinforcing bar 0Cr25Ni20 of φ 10mm (310S) and do stiffening web are made casting material prefabricated brick, casting, maintenance and be baked to 300 ℃;
E) mould material is constructed and is built casting material prefabricated brick by laying bricks or stones
Mould material is constructed and is built casting material prefabricated brick by laying bricks or stones and may further comprise the steps:
1) install template, adopt the thick wooden form of 20mm to make the pillar typified form, typified form is arranged to the consistent size with former refractory brick marshalling, should support by two adjacent pillars when typified form is installed;
2) after mould material pours 1 hour, need the refractory brick of building by laying bricks or stones above on the cast charge level, placing, so that the moulding of mould material upper surface,, should in time take refractory brick away after moulding is intact with the top refractory brick coupling of building by laying bricks or stones of needing;
3) the mould material maintenance can be built refractory brick by laying bricks or stones after 48 hours on the cast charge level;
4) at the damage of every layer of brick of each slope air course masonry, the face brick that facings the wind of infringement is changed repairerment, build by laying bricks or stones as the fissure of displacement;
5) build casting material prefabricated brick by laying bricks or stones before, former masonry is cleaned totally, water waters a little again;
When 6) building every layer of casting material prefabricated brick by laying bricks or stones, build by laying bricks or stones, keep the level of masonry according to the elevation dimension of former masonry, must not be downward-sloping, adopt the two-sided ash of beating during casting material prefabricated brick building, must control the mortar plumpness of brickwork joint well;
7) foamed styrene of 2mm is laid at the Zhuan Gou position of every brick.
8) each slope air course is built by laying bricks or stones after casting material prefabricated brick finishes, if big brickwork joint or loosening is arranged, needs previously prepd 140 * 100 * 2mm heat-resistance stainless steel plate is squeezed into brickwork joint, can squeeze into steel plate 2-3 piece on each slope air course pillar;
F) remove the furred ceiling supportive device
Remove chain block, wireline and cross the dome brick strut member, and screw block.
Dry coke quenching slope air course of the present invention supports brick maintenance construction technology and can also be further achieved by the following technical measures.
Aforesaid method, wherein said c) expansion bolt in the slope air course pillar root anchoring piece step, the heat-resistance stainless steel material that anchoring piece adopts 0Cr25Ni20 (310S) are installed;
Aforesaid method, wherein said d) provides mould material and make and in making casting material prefabricated brick, add 4 heat-resisting reinforcing bar 0Cr25Ni20 of φ 10mm (310S) in the casting material prefabricated brick step and do stiffening web.
After adopting technique scheme, dry coke quenching slope air course of the present invention supports brick maintenance construction technology and has the following advantages:
1, prolongs slope air course support portion work-ing life;
2, improve the work-ing life of dry extinguishing coke pot, shortened maintenance duration greatly;
3, shorten maintenance duration, reduce maintenance cost, save production cost.
Description of drawings
Fig. 1 is the furred ceiling supportive device synoptic diagram of the embodiment of the invention;
Fig. 2 is the chute strut structural representation of the embodiment of the invention;
Fig. 3 is the anchoring piece structural representation of the embodiment of the invention;
Fig. 4 is two adjacent shore supports typified form synoptic diagram of the embodiment of the invention;
Fig. 5 squeezes into the synoptic diagram of brickwork joint for the heat-resistance stainless steel plate of the embodiment of the invention.
Among the figure: 1 furnace roof bearing platform, 2 chain blocks, 3 wireline, 4 coke, 5 cooling zone refractory brick loading ends, 6 chute district refractory brick loading ends, 7 screw block, 8 cross dome brick strut member, 9 peephole supports, 10 casting material prefabricated bricks, 11 mould material, 12 chute oral thermometer face brick lines, 13 templates, 14 studs, 15 slope air course pillars, 16 steel plates, the direction of F hammering steel plate power.
Embodiment
Below in conjunction with embodiment and accompanying drawing thereof the present invention is illustrated further.
Dry coke quenching slope air course of the present invention supports brick maintenance construction technology and may further comprise the steps:
A) the furred ceiling supportive device is installed
Now see also Fig. 1, Fig. 1 is the furred ceiling supportive device synoptic diagram of the embodiment of the invention.As shown in the figure; described chain block 2, wireline 3 and cross dome brick strut member 8 and make the ring-type suspender and draw high slope air course and cross dome brick top masonry; apply the integral body opposite and lift prestress with slope air course pillar upper, annular masonry deadweight direction; when preventing that the slope air course pillar from separating body construction; cause that the top masonry sinks, and supported the dome brick bottom with screw block 7 and protect.
B) remove slope air course pillar brick
Fig. 2 is the chute strut structural representation of the embodiment of the invention, earlier loosening brick is removed when the pillar brick is removed, and removes 63 layers from top to bottom from the 75th layer.Because pillar brick upper layer is that the fissure of displacement is built by laying bricks or stones, the refractory brick size differs, and to dismountings of holing of the long brick of size, the number of plies is 75,73,71,69,67,65,63 layers successively, and other layers can directly take out.75 fault ruptures place can be removed, and consider that following brick tears the brick of empty top 75 layers of GAT-2031 open and fall down and pound the operating personnel.Disintegrate with pneumatic pick, the pneumatic pick vibrations are too big, easily fissure of displacement brick interrupted, and build into straight joint by laying bricks or stones after causing.The special-purpose drilling machine of appropriate to the occasion employing that disintegrates, every block of charing silica brick need bore 2-3 hole, just can smash charing silica brick, takes out the charing silica brick of this dismounting.Lay special stress on will calculate the degree of depth of boring, does not need the charing silica brick removed in order to avoid get into the inside.
C) slope air course pillar root anchoring piece is installed
Fig. 3 is the anchoring piece structural representation of the embodiment of the invention, slope air course pillar root anchoring piece is installed is may further comprise the steps:
1) described bottom is a mould material for the 62nd, 63,64 3 layers, adopts Wicresoft's punching technology to bore the hole of long 60mm, diameter phi 14mm at middle part, the 62nd, 63,64 layer of refractory brick position.Squeeze into the expansion bolt of φ 12mm then." Y " type anchoring piece that welding φ 12mm round steel is made on the expansion bolt, it is advisable the length of anchoring piece with the top of anchoring piece and the about 50mm-60mm of spacing of windward side.
2) expansion bolt, anchoring piece adopt the heat-resistance stainless steel material of 0Cr25Ni20 (310S).Expansion bolt should be wrapped with the plastic colloidal cloth that thickness is 1mm when reaching the last with the anchoring piece cast.
3) boring is wanted slowly, installs the floating ash that should remove the brick face behind expansion bolt, the anchoring piece, adopts high viscose glue body to handle at the brick face of pouring position, increases the associativity of mould material and refractory brick.
D) provide mould material and the casting material prefabricated brick of making
Described mould material is to be prepared by mullite silicon carbide, described mould material contains following raw materials by weight percent composition: aggregate 68~75%, matrix 23~30%, stainless steel heat-resistant fiber 1.5~2.0%, wherein aggregate partly contains following weight percent composition: high-purity low iron mullite synthesizing 45~55%, superfine silicon carbide 12~16%, matrix partly contains following weight percent composition: high purity silica powder 5~9%, carbide fine powder 4~8%, rafifinal hydrochlorate 5~8%, active alpha-Al 2O 34~6%; Size and the profile described mould material identical according to former refractory brick are made casting material prefabricated brick, casting, maintenance and be baked to 300 ℃;
E) mould material is constructed and is built casting material prefabricated brick by laying bricks or stones
Fig. 4 is two adjacent shore supports typified form synoptic diagram of the embodiment of the invention, and Fig. 5 squeezes into the synoptic diagram of brickwork joint for the heat-resistance stainless steel plate of the embodiment of the invention.
Mould material is constructed and is built casting material prefabricated brick by laying bricks or stones and may further comprise the steps:
1) install template, adopt the thick wooden form of 20mm to make pillar typified form 13, typified form 13 is arranged to the consistent size with former refractory brick marshalling, should support by two adjacent pillars 14 when typified form is installed;
2) described mould material is poured in the described template, after mould material pours 1 hour, need the refractory brick of building by laying bricks or stones above on the cast charge level, placing, so that the moulding of mould material upper surface, mate with the top refractory brick that needs to build by laying bricks or stones, should in time take refractory brick away after moulding is intact;
3) the mould material maintenance can be built refractory brick by laying bricks or stones after 48 hours on the cast charge level;
4) at the damage of every layer of brick of each slope air course masonry, the face brick that facings the wind of infringement is changed repairerment, build by laying bricks or stones as the fissure of displacement;
5) build casting material prefabricated brick 10 by laying bricks or stones before, former masonry is cleaned totally, water waters a little again;
6) every layer when building casting material prefabricated brick 10 by laying bricks or stones, build by laying bricks or stones according to the elevation dimension of former masonry, keep the level of masonry, avoid masonry downward-sloping, adopt the two-sided ash of beating when building by laying bricks or stones, and control the mortar plumpness of brickwork joint well;
7) foamed styrene of 2mm is laid at the Zhuan Gou position of every brick;
8) after the casting material prefabricated brick 10 of each slope air course is built by laying bricks or stones and finished,, need previously prepd 140 * 100 * 2mm heat-resistance stainless steel plate 16 is squeezed into brickwork joint, can squeeze into described steel plate 2-3 piece on each slope air course pillar if big brickwork joint or loosening is arranged;
F) remove the furred ceiling supportive device
Remove chain block, wireline and cross the dome brick strut member, and screw block.
Finish the service work that the dry coke quenching slope air course supports brick thus.
Above embodiment is only for the usefulness that the present invention is described, but not limitation of the present invention, person skilled in the relevant technique under the situation that does not break away from the spirit and scope of the present invention, can also be made various conversion or variation.Therefore, all technical schemes that are equal to also should belong to category of the present invention, should be limited by each claim.

Claims (3)

1. a dry coke quenching slope air course supports brick maintenance construction technology, it is characterized in that may further comprise the steps:
A) the furred ceiling supportive device is installed
With chain block, wireline with cross the dome brick strut member and make the ring-type suspender and draw high slope air course and cross dome brick top masonry, apply the integral body opposite and lift prestress, and supported the dome brick bottom with screw block with slope air course pillar upper, annular masonry deadweight direction;
B) remove slope air course leg portion refractory brick
Remove loosening brick when removing the pillar brick earlier, remove 63 layers from top to bottom from the 75th layer, adopt special-purpose drilling machine to bore 2-3 hole and smash charing silica brick, take out the charing silica brick of described dismounting at every block of charing silica brick;
C) slope air course pillar root anchoring piece is installed
Slope air course pillar root anchoring piece is installed be may further comprise the steps:
1) be that 60mm, diameter are the hole of 14mm with Wicresoft's drilling method the 62nd, 63,64 layer of refractory brick position drilled in middle length;
2) in the hole of described diameter 14mm, squeeze into the expansion bolt of diameter 12mm, at " Y " type anchoring piece of described expansion bolt afterbody weld diameter 12mm round steel making, wherein: the long 60mm of expansion bolt, the partly long 130mm of the round steel of anchoring piece, the long 30mm of empennage, 60 ° of two empennage angles;
3) described expansion bolt is reached the last and the anchoring piece cast time should be wrapped with the plastic colloidal cloth that thickness is 1mm, installs the floating ash that should remove the brick face behind expansion bolt, the anchoring piece;
D) provide mould material and the casting material prefabricated brick of making
Described mould material is by mullite-silicon carbide preparation, described mould material contains following raw materials by weight percent composition: aggregate 68~75%, matrix 23~30%, stainless steel heat-resistant fiber 1.5~2.0%, wherein aggregate partly contains following weight percent composition: high-purity low iron mullite synthesizing 45~55%, superfine silicon carbide 12~16%, matrix partly contains following weight percent composition: high purity silica powder 5~9%, carbide fine powder 4~8%, rafifinal hydrochlorate 5~8%, active alpha-Al 2O 34~6%; Size and the profile described mould material identical according to former refractory brick are made casting material prefabricated brick, casting, maintenance and be baked to 300 ℃;
E) mould material is constructed and is built casting material prefabricated brick by laying bricks or stones
Mould material is constructed and is built casting material prefabricated brick by laying bricks or stones and may further comprise the steps:
1) install template, adopt the thick wooden form of 20mm to make the pillar typified form, typified form is arranged to the consistent size with former refractory brick marshalling, should support by two adjacent pillars when typified form is installed;
2) described mould material is poured in the described template, after mould material pours 1 hour, need the refractory brick of building by laying bricks or stones above on the cast charge level, placing, so that the moulding of mould material upper surface, mate with the top refractory brick that needs to build by laying bricks or stones, should in time take refractory brick away after moulding is intact;
3) the mould material maintenance can be built refractory brick by laying bricks or stones after 48 hours on the cast charge level;
4) at the damage of every layer of brick of each slope air course masonry, the face brick that facings the wind of infringement is changed repairerment, build by laying bricks or stones as the fissure of displacement;
5) build casting material prefabricated brick by laying bricks or stones before, former masonry is cleaned totally, water waters a little again;
6) every layer when building casting material prefabricated brick by laying bricks or stones, build by laying bricks or stones according to the elevation dimension of former masonry, keep the level of masonry, avoid masonry downward-sloping, adopt the two-sided ash of beating when building by laying bricks or stones, and control the mortar plumpness of brickwork joint well;
7) foamed styrene of 2mm is laid at the Zhuan Gou position of every brick;
8) each slope air course casting material prefabricated brick build finish after, if big brickwork joint or loosening is arranged, need previously prepd 140 * 100 * 2mm heat-resistance stainless steel plate is squeezed into brickwork joint, can squeeze into described steel plate 2-3 piece on each slope air course pillar;
F) remove the furred ceiling supportive device
Remove chain block, wireline and cross the dome brick strut member, and screw block.
2. dry coke quenching slope air course as claimed in claim 1 supports brick maintenance construction technology, it is characterized in that described c) expansion bolt in the slope air course pillar root anchoring piece step, the heat-resistance stainless steel material that anchoring piece adopts 0Cr25Ni20 (310S) be installed.
3. dry coke quenching slope air course as claimed in claim 1 supports brick maintenance construction technology, it is characterized in that described d) mould material is provided and makes and in making casting material prefabricated brick, add 4 heat-resisting reinforcing bar 0Cr25Ni20 of φ 10mm (310S) in the casting material prefabricated brick step and do stiffening web.
CN 201010116704 2010-03-03 2010-03-03 Coke dry quenching slope air course supporting brick overhaul construction process Active CN102191066B (en)

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CN102492440A (en) * 2011-12-16 2012-06-13 宁波钢铁有限公司 Protection method for weld on inner wall of water seal seat used on mouth of coke dry quenching furnace
CN102492439A (en) * 2011-11-25 2012-06-13 攀钢集团工程技术有限公司 Method for replacement of bracket brick in chute zone of coke dry quenching furnace
CN102492438A (en) * 2011-11-25 2012-06-13 攀钢集团攀枝花钢钒有限公司 Method for replacing brackets of dry quenching furnace
CN102504838A (en) * 2011-10-18 2012-06-20 中国一冶集团有限公司 Method for supporting arch tire for building overhead brick in inclined duct of dry quenching furnace
CN103234353A (en) * 2013-04-15 2013-08-07 中信重工机械股份有限公司 Device and method for repairing inclined air duct of sintered ore cooling furnace
CN103509566A (en) * 2012-06-20 2014-01-15 五冶集团上海有限公司 Overhaul construction method of double chute position of dry quenching furnace
CN104567414A (en) * 2013-10-22 2015-04-29 五冶集团上海有限公司 Building control method of lining of tubular kiln
CN105387723A (en) * 2015-11-27 2016-03-09 马鞍山钢铁股份有限公司 Dry quenching furnace stereoscopic modular overhaul tool
CN105482831A (en) * 2014-09-19 2016-04-13 五冶集团上海有限公司 Improvement method for laying of corbel pillar bricks of coke dry quenching furnace
CN106281370A (en) * 2015-05-25 2017-01-04 五冶集团上海有限公司 A kind of refractory brick of novel regulation coke dry quenching furnace chute mouth sectional area
CN106833684A (en) * 2017-02-24 2017-06-13 中冶焦耐(大连)工程技术有限公司 A kind of bracket structure and its construction method for extending coke dry quenching furnace service life
CN108658610A (en) * 2017-03-28 2018-10-16 五冶集团上海有限公司 A kind of casting material prefabricated brick and production method of dry coke quenching slope air course support portion
CN109020585A (en) * 2017-06-12 2018-12-18 五冶集团上海有限公司 A kind of wear-resistant castable and its preparation and application
CN109810716A (en) * 2019-04-02 2019-05-28 攀钢集团工程技术有限公司 The construction method replaced simultaneously for coke dry quenching furnace bracket brick and cooling section masonry
CN110953876A (en) * 2019-12-18 2020-04-03 攀钢集团工程技术有限公司 Method for repairing vertical kiln refractory layer
CN110986591A (en) * 2019-11-22 2020-04-10 柳州钢铁股份有限公司 Method for repairing and building refractory material on back of Maerz kiln suspension cylinder
CN111996016A (en) * 2020-08-25 2020-11-27 马鞍山钢铁股份有限公司 Maintenance method for monoclinic way dry quenching furnace
CN113528162A (en) * 2021-06-07 2021-10-22 中国五冶集团有限公司 Reinforcing method for overall replacement of pillar bricks in chute area of dry quenching furnace
CN113755187A (en) * 2021-09-29 2021-12-07 中冶焦耐(大连)工程技术有限公司 Bracket structure of chute area of coke dry quenching furnace

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CN102504838A (en) * 2011-10-18 2012-06-20 中国一冶集团有限公司 Method for supporting arch tire for building overhead brick in inclined duct of dry quenching furnace
CN102504838B (en) * 2011-10-18 2013-09-04 中国一冶集团有限公司 Method for supporting arch tire for building overhead brick in inclined duct of dry quenching furnace
CN102492439A (en) * 2011-11-25 2012-06-13 攀钢集团工程技术有限公司 Method for replacement of bracket brick in chute zone of coke dry quenching furnace
CN102492438A (en) * 2011-11-25 2012-06-13 攀钢集团攀枝花钢钒有限公司 Method for replacing brackets of dry quenching furnace
CN102492440A (en) * 2011-12-16 2012-06-13 宁波钢铁有限公司 Protection method for weld on inner wall of water seal seat used on mouth of coke dry quenching furnace
CN102492440B (en) * 2011-12-16 2013-11-13 宁波钢铁有限公司 Protection method for weld on inner wall of water seal seat used on mouth of coke dry quenching furnace
CN103509566A (en) * 2012-06-20 2014-01-15 五冶集团上海有限公司 Overhaul construction method of double chute position of dry quenching furnace
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CN104567414A (en) * 2013-10-22 2015-04-29 五冶集团上海有限公司 Building control method of lining of tubular kiln
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CN105482831A (en) * 2014-09-19 2016-04-13 五冶集团上海有限公司 Improvement method for laying of corbel pillar bricks of coke dry quenching furnace
CN106281370A (en) * 2015-05-25 2017-01-04 五冶集团上海有限公司 A kind of refractory brick of novel regulation coke dry quenching furnace chute mouth sectional area
CN105387723B (en) * 2015-11-27 2017-12-12 马鞍山钢铁股份有限公司 A kind of coke dry quenching furnace three-dimensional modularized maintenance tool
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CN106833684A (en) * 2017-02-24 2017-06-13 中冶焦耐(大连)工程技术有限公司 A kind of bracket structure and its construction method for extending coke dry quenching furnace service life
CN108658610A (en) * 2017-03-28 2018-10-16 五冶集团上海有限公司 A kind of casting material prefabricated brick and production method of dry coke quenching slope air course support portion
CN109020585B (en) * 2017-06-12 2021-10-01 五冶集团上海有限公司 Wear-resistant castable and preparation and use methods thereof
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CN109810716A (en) * 2019-04-02 2019-05-28 攀钢集团工程技术有限公司 The construction method replaced simultaneously for coke dry quenching furnace bracket brick and cooling section masonry
CN110986591A (en) * 2019-11-22 2020-04-10 柳州钢铁股份有限公司 Method for repairing and building refractory material on back of Maerz kiln suspension cylinder
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