CN1485446A

CN1485446A - Thermal state method for restoring branch pipe orifice of blast furnace bustle pipe

Info

Publication number: CN1485446A
Application number: CNA021372519A
Authority: CN
Inventors: 王立辉; 鲍戟; 万强; 张龙来; 蒋基洪; 关丕东; 沈恒元; 宋家齐
Original assignee: SHANGHAI BAOYE INDUSTRIAL FURNACE Co; Baoshan Iron and Steel Co Ltd
Current assignee: SHANGHAI BAOYE INDUSTRIAL FURNACE Co; Baoshan Iron and Steel Co Ltd
Priority date: 2002-09-28
Filing date: 2002-09-28
Publication date: 2004-03-31
Anticipated expiration: 2022-09-28
Also published as: CN1208474C

Abstract

A technology of repairing inner lining material of blast furnaces, especially thermally repairing bustle pipes. It comprises: a. clogging and insulating the ceramic fiber layer containing metallic framework ; b. dissembling the firebricks in inner walls; c. supporting and fixing flatiron onto iron housing of the pipe;d. selecting firebricks. The invention is mainly used to repair inner linings of blast furnaces.

Description

Thermal state method for restoring branch pipe orifice of blast furnace bustle pipe

One, technical field

The present invention relates to the recovery technique of the anti-material of a kind of blast furnace lining, particularly a kind of thermal state method for restoring branch pipe orifice of blast furnace bustle pipe.

Two, background technology

Blowpipe is the Thermal Equipment that connects bustle pipe and blast-furnace tuyere, is to keep the required hot blast of blast furnace ordinary production to enter the interior unique passage of State of Blast Furnace, and bustle pipe is called Zhi Yuanguan with the intermediate location that is connected of arm.Zhi Yuanguan is an one with bustle pipe on inner lining structure, and its masonry way is to be built by laying bricks or stones to the bustle pipe center position by mouth of pipe brick.During blast furnace capital construction design, its life-span of Zhi Yuanguan and bustle pipe is and blast furnace generation stove labour synchronous (more than 10 years) that if do not take special measure, the Zhi Yuanguan liner is to overhaul under hot, otherwise will cause the integral body of Zhi Yuanguan and bustle pipe to be damaged.The damage at this position down carries out more hot that the actual achievement of changeable liner there is no report both at home and abroad, so all adopt the outside strap of metal flange, stops hot blast to leak generally speaking, keeps blast furnace production.But, owing to this method is not repaired liner, so only be the interim measure of curing the symptoms, not the disease.Any air leakage phenomena of blast furnace bustle pipe arm all directly influences the ordinary production of blast furnace, and blast furnace will be forced to damping down for this reason.Frequent damping down not only influences the direct motion of the working of a furnace, and influences output.

Three, summary of the invention

The technical issues that need to address of the present invention are: be damaged and when causing leaking out at blast furnace bustle pipe branch pipe orifice liner, providing a kind of can in time carry out the thermal state method for restoring branch pipe orifice of blast furnace bustle pipe that the branch pipe orifice liner is repaired down hot.

Technical scheme of the present invention is: thermal state method for restoring branch pipe orifice of blast furnace bustle pipe may further comprise the steps: a, branch pipe orifice shutoff are heat insulation: the position that will include the non-repairing of ceramic fiber bed course shutoff branch pipe orifice inner lining refractory block of metallic framework.B, interior ring refractory brick disintegrate: when the disintegration branch pipe orifice first ring refractory brick, 1-2 piece brick in this ring refractory brick of disintegration earlier, preferably select it to close tweel block, cut off earlier and close the corresponding body iron-clad of tweel block, will close tweel block with screw block along the radial direction of encircling brick in manage and eject.The support fixation of c, ring brick: at disintegration branch pipe orifice first ring refractory brick 1-2 piece, expose the root of the second ring refractory brick after, be close to the second ring fire brick surface welding band iron in the body iron-clad, continue other refractory brick of disintegration branch pipe orifice first ring then.The band iron of fixing the second ring refractory brick serves as easily with 3-6 point discrete distribution, also the arch tire can be set in Zhi Yuanguan.D, repair the door that closes of back refractory brick: the reparation of Zhi Yuanguan refractory brick finishes, refractory brick close door still in the former tweel block position of closing of the branch pipe orifice first ring refractory brick.Cut off the metal brick plate that closes the tweel block correspondence position earlier, close tweel block and will close tweel block with wooden mallet from outside to inside and squeeze into, close the gap plastic refractory filling of tweel block and body iron-clad along the axial direction due of ring brick.Close tweel block and build by laying bricks or stones and finish, again the welding of metal brick plate is restored and polish flat.

The invention has the beneficial effects as follows: when blast furnace bustle pipe branch pipe orifice liner is damaged and causes leaking out, can be in time under hot state the refractory brick of branch pipe orifice liner be carried out Replacement and Repair, reduced the damping down of blast furnace.

Four, description of drawings

Fig. 1 is Zhi Yuanguan of the present invention installation site figure

Fig. 2 is a shutoff ceramic fiber bed course positional structure synoptic diagram of the present invention

Fig. 3 is first tubular construction schematic front view for the present invention props up

Fig. 4 is first tubular construction signal right view for the present invention props up

Among the figure: 1-bustle pipe, 2-prop up unit's pipe, the 3-arm, and the 4-blast furnace, 5-ceramic fiber bed course, the 6-metal hook,

The 7-first ring refractory brick, the 8-second ring refractory brick, 9-metal brick plate, 10-band iron, 11-body iron

Shell, 12-closes tweel block.

Five, embodiment

Embodiment 1: with reference to Fig. 1, blowpipe 3 is the Thermal Equipments that connect bustle pipe 1 and blast furnace 4 air ports, is to keep the required hot blast of blast furnace ordinary production to enter the interior unique passage of blast furnace 4 stoves, and bustle pipe is called Zhi Yuanguan 2 with the intermediate location that is connected of 1 arm 3.Zhi Yuanguan 2 is an one with bustle pipe 1 on inner lining structure, and its masonry way is to be built by laying bricks or stones to the bustle pipe center position by mouth of pipe brick.When 2 mouthfuls of liners of Zhi Yuanguan are damaged the needs replacing, it is heat insulation at first to carry out 2 mouthfuls of shutoff of Zhi Yuanguan: with reference to Fig. 2, because the enforcement of this technology is to carry out under the hot state of blast furnace staying, so effectively shutoff is heat insulation is the prerequisite of this technology implementation, design and produce 2 mouthfuls of liners of ceramic fiber bed course 5 shutoff Zhi Yuanguan, the second ring refractory brick 8 that includes metallic framework.Ceramic fiber bed course inside comprises metal hook 6, and one side makes the shape of ceramic fiber bed course 5 be convenient to fix, shutoff, also is convenient on the other hand remove.With reference to Fig. 3,4, when the disintegration mouth of pipe first ring refractory brick 7, at first disintegrate and close tweel block 12, cut off earlier and close tweel block 12 corresponding body iron-clads 11, will close tweel block 12 with screw block along the radial direction of encircling brick in manage to eject, thereby be convenient to encircle the disintegration of brick.The cardinal principle of this technology be utilize the ring brick close tweel block 12 its integrally-built unstable of back of disintegrating.When disintegrating replacing in order to ensure Zhi Yuanguan 2 inner lining refractory blocks, whole Zhi Yuanguan 2 liner masonries are unlikely to whole to be destroyed, after closing tweel block 12 disintegration, after exposing the root of the second ring refractory brick, be close to 8 welding of second ring refractory brick band iron 10 in body iron-clad 11, continue other refractory brick of 2 mouthful of first ring of disintegration Zhi Yuanguan then.The band iron of fixing the second ring refractory brick is along the circumferential direction uniform with 4.The cardinal principle of this technology is to have utilized the ring brick structure through having relative independent stability behind the high temperature sintering.When Zhi Yuanguan 2 inner lining refractory block reparations finish, refractory brick close door still in former tweel block 12 positions of closing of the branch pipe orifice first ring refractory brick 7.Cut off the metal brick plate 9 that closes tweel block 12 correspondence positions earlier, the axial direction due that closes tweel block 12 edge ring bricks will close tweel block with wooden mallet from outside to inside and squeeze into, and close the gap plastic refractory filling of tweel block 12 and body iron-clad 11.Close tweel block 12 and build by laying bricks or stones and finish, again 9 welding of metal brick plate are restored and polish flat.

Embodiment 2: the arch tire is set in Zhi Yuanguan 2, band iron be distributed as 3 points, all the other are identical with embodiment 1.

Embodiment 3: band iron be distributed as 5 points, all the other are identical with embodiment 1.

Claims

1, thermal state method for restoring branch pipe orifice of blast furnace bustle pipe is characterized in that may further comprise the steps:

A, branch pipe orifice shutoff are heat insulation: the position that will include the non-repairing of ceramic fiber bed course shutoff branch pipe orifice inner lining refractory block of metallic framework;

B, interior ring refractory brick disintegrate: when the disintegration branch pipe orifice first ring refractory brick, the 1-2 piece brick in this ring refractory brick that disintegrates earlier cuts the corresponding body iron-clad of this refractory brick earlier, with the radial direction of screw block along the ring brick this refractory brick is ejected in managing;

The support fixation of c, ring brick: at the disintegration branch pipe orifice first ring refractory brick 1-2 piece, after exposing the root of the second ring refractory brick, be close to the second ring fire brick surface welding band iron in the body iron-clad, continue other refractory brick of disintegration branch pipe orifice first ring then, the band iron of fixing the second ring refractory brick serves as easy with 3-6 point discrete distribution;

D, repair the door that closes of back refractory brick: the reparation of Zhi Yuanguan refractory brick finishes, refractory brick close door still in the former tweel block position of closing of branch pipe orifice first ring refractory brick, cut off the metal brick plate that closes the tweel block correspondence position earlier, closing tweel block will close tweel block with wooden mallet from outside to inside and squeeze into along the axial direction due of ring brick, close the gap plastic refractory filling of tweel block and body iron-clad, close tweel block and build by laying bricks or stones and finish, again the welding of metal brick plate is restored and polish flat.

2, thermal state method for restoring branch pipe orifice of blast furnace bustle pipe according to claim 1 is characterized in that: the first ring refractory brick that at first disintegrates is for closing tweel block.

3, thermal state method for restoring branch pipe orifice of blast furnace bustle pipe according to claim 1 is characterized in that: the arch tire is set in Zhi Yuanguan.