CN102676730B - The Rapid Thermal replacing method of converter bottom blowing air brick, Special drill machine and air brick - Google Patents
The Rapid Thermal replacing method of converter bottom blowing air brick, Special drill machine and air brick Download PDFInfo
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- CN102676730B CN102676730B CN201210164923.1A CN201210164923A CN102676730B CN 102676730 B CN102676730 B CN 102676730B CN 201210164923 A CN201210164923 A CN 201210164923A CN 102676730 B CN102676730 B CN 102676730B
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
- C21C5/00—Manufacture of carbon-steel, e.g. plain mild steel, medium carbon steel or cast steel or stainless steel
- C21C5/28—Manufacture of steel in the converter
- C21C5/42—Constructional features of converters
- C21C5/44—Refractory linings
- C21C5/441—Equipment used for making or repairing linings
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
- C21C5/00—Manufacture of carbon-steel, e.g. plain mild steel, medium carbon steel or cast steel or stainless steel
- C21C5/28—Manufacture of steel in the converter
- C21C5/30—Regulating or controlling the blowing
- C21C5/35—Blowing from above and through the bath
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
- C21C5/00—Manufacture of carbon-steel, e.g. plain mild steel, medium carbon steel or cast steel or stainless steel
- C21C5/28—Manufacture of steel in the converter
- C21C5/42—Constructional features of converters
- C21C5/46—Details or accessories
- C21C5/48—Bottoms or tuyéres of converters
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Carbon Steel Or Casting Steel Manufacturing (AREA)
- Furnace Housings, Linings, Walls, And Ceilings (AREA)
Abstract
A kind of Rapid Thermal replacing method of converter bottom blowing air brick, Special drill machine and air brick, belong to converter top bottom blowing Apparatus and method for technical field, for converter bottom blowing air brick is carried out to Rapid Thermal replacing, its technical scheme is: the porous core brick of employing is connected to form by three sections of epimeres, stage casing, hypomere; Protective sleeve brick is connected to form by upper cover brick and the brick of trapping, and upper cover brick is magnesia carbon brick, and the brick of trapping is corundum castable, and protective sleeve brick is sleeved on outside porous core brick; Furnace bottom flange welding is at furnace bottom opening part, and furnace bottom flange is connected with Special drill machine; Its method is: prepare porous core brick, protective sleeve brick, furnace bottom flange, cylinder flange, drilling machine; Pull down old air brick, the brick frustum of a cone part of trapping of cleaning protective sleeve brick; Hole with drilling machine; Air brick is installed, is connected tail pipe. The present invention can change the bottom-blown air brick of damage in the hot shorter time of lower use, protective sleeve brick can repeatedly be changed and not bad, blows again in full stove labour thereby realize converter.
Description
Technical field
The present invention relates to the Special drill machine of a kind of steelmaking converter bottom-blown air brick, air brick and Rapid Thermal and change the method for this air brick, belong to pneumatic steelmaking top bottom blowing Apparatus and method for technical field.
Background technology
Converter top bottom compositing blowing steelmaking technology combines many advantages of oxygen top-blown converter technology and oxygen bottom blown converter technology, there is superiority at aspects such as reducing iron oxide content in slag, raising recovery rate of iron, the consumption of reduction ferroalloy, by steel-making enterprise extensive use both at home and abroad. In the application of this technology, find, due to the service condition very severe of air brick, damage very fast, so can not synchronize with furnace life, its reason is: 1, air brick passes into stirring gas in the molten bath several times that expand rapidly, for molten steel brings huge stirring power, the rapid flow of molten steel produces strong mechanical shock to air brick. 2, in molten steel, contain in a large number to refractory material objectionable impurities, these impurity at high temperature have serious chemical corrosion to refractory material. 3, stirring gas, not go out before air brick temperature lower, refractory material is had to certain cooling effect, and the end face of air brick is the molten steel of 1700 DEG C of left and right, the very easily explosion and peeling off of this variations in temperature refractory material sharply. The air brick of working under these conditions, better its life-span of maintenance system also difficulty exceed 6000 stoves, 2000 about stoves just sometimes. 4, in addition, due to the covering of slag blanket or because various accidents are died suddenly and also can be made bottom blowing stop.
At present, pneumatic steelmaking generally adopts Technology of Slag Splashingfor Furnace Maintenance, the optimization furnace life that adds process for making generally all exceedes ten thousand stoves, what have even exceedes 30,000 stoves, that is to say that a block converter on average has more than 70% furnace life not blow again in whole stove labour, thereby blow again due benefit and can not obtain within most furnace life.
Whether again the one block converter technique advanced person rate of blowing is important one of beautiful, must the air brick of damage be changed to new air brick fast, the demand that national numerous smelters have whole process to blow again down hot and will realize omnidistance just blow again. At present; domestic Jin You only a few enterprise can change under hot; but every replacing once needs 4～7 hours; slightly have some setbacks more while utilization; very impact is produced; and protective sleeve brick is basic just damaged after changing 1-2 core brick, can not ensure to change more than 4 times, still can not realizes the full stove labour of a block converter and normally blow again. The reason that occurs above-mentioned situation is many-sided, and at present, air brick core brick structure, protective sleeve brick structure and material, furnace bottom flange arrangement, drilling machine performance etc. all can not meet quick-replaceable requirement. Therefore steelmaking converter bottom-blown air brick Rapid Thermal replacing method is improved, and provided parts and the utensil of realizing this method to blow again reliable technical conditions are provided for pneumatic steelmaking whole process.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of Rapid Thermal replacing method of converter bottom blowing air brick, Special drill machine and air brick; the Rapid Thermal replacing method of this air brick, Special drill machine and air brick can be changed the bottom-blown air brick of damage in the hot shorter time of lower use; and protective sleeve brick is able to stand repeatedly change and not bad, thereby a block converter is blown again in full stove labour.
The technical scheme solving the problems of the technologies described above is:
A kind of steelmaking converter bottom-blown air brick, it comprises porous core brick, protective sleeve brick, furnace bottom flange;
Described porous core brick is connected to form by three sections of epimeres, stage casing, hypomere, the front end of epimere and inboard wall of furnace body flush, and the rear end of hypomere flushes with furnace shell steel plate inner side;
Described protective sleeve brick is connected to form by upper cover brick and the brick of trapping, the endoporus of upper cover brick and the brick of trapping matches with the periphery of porous core brick, and upper cover brick is magnesia carbon brick, and the brick of trapping is corundum castable, the front end of upper cover brick and inboard wall of furnace body flush, the rear end of the brick of trapping is connected with furnace bottom brick cup;
Described furnace bottom flange is plane face flange, and furnace bottom flange welding is at furnace bottom opening part, and furnace bottom flange outside is connected with drilling machine by bolt.
Above-mentioned converter bottom blowing air brick, the epimere of described porous core brick and hypomere are cylinders, stage casing is circular cone stage body, the top minor diameter round platform of the cylindrical diameter of epimere and stage casing circular cone stage body matches, the bottom major diameter round platform of the cylindrical diameter of hypomere and stage casing circular cone stage body matches, rear portion at hypomere connects air chamber and tail pipe successively, tail pipe rear end sidewall is connected with core brick flange, tail pipe rear end is connected with furnace bottom tracheae by rigid snap joint, in core brick, there is the epimere of running through, stage casing, the multiple parallel stainless steel capillary of hypomere, stainless steel capillary is rectangular or circular uniform on core brick section, the pipe of every layer or every circle is equidistantly welded on stainless steel anchoring piece and becomes one.
Above-mentioned converter bottom blowing air brick, the diameter of the cylindrical diameter of epimere of described porous core brick and the top minor diameter round platform of stage casing circular cone stage body is 80～150mm, the diameter of the bottom major diameter round platform of the cylindrical diameter of hypomere and stage casing circular cone stage body is 120～180mm, the cylindrical length of epimere is 400～700mm, the length of stage casing circular cone stage body is 150～300mm, and the length of hypomere is identical with furnace bottom permanent layer thickness.
Above-mentioned converter bottom blowing air brick; the periphery of the endoporus of the upper cover brick of described protective sleeve brick and porous core brick epimere matches; the endoporus of brick and the periphery of porous core brick stage casing circular cone stage body of trapping matches; fit clearance is 1～2mm; the height of upper cover brick is 400-700mm, and the height of the brick of trapping is 150-300mm.
Above-mentioned converter bottom blowing air brick, between described furnace bottom flange and drilling machine, be also connected with cylinder flange, cylinder flange two ends have respectively ring flange, centre is sleeve, the ring flange of cylinder flange one end is connected with furnace bottom flange, and the ring flange of the cylinder flange other end is connected with the front end flange of drilling machine.
A kind of Special drill machine of converter bottom blowing air brick, it is by column, front end flange, rear end flanges, positioner, drill bit, drill bit motor, electric machine support, feed motor, feed leading screw, screw composition, column is three, parallelly lay along circumference, front end flange is connected with the front and back end of column with rear end flanges, positioner is arranged on front end flange, drill sleeve is contained in positioner, drill bit is connected with drill bit motor, drill bit motor is fixed in electric machine support, feed leading screw parallel with column, one side of electric machine support is connected with screw, screw with feed leading screw and be meshed, one end connection that feeds leading screw feeds motor, feed the outside that motor is arranged on rear end flanges, the front end flange of drilling machine is connected with furnace bottom flange.
The Special drill machine of above-mentioned converter bottom blowing air brick, described drill bit is diamond water collar cartridge type, bore diameter is 80～180mm, turn/min of rotating speed 500～600; Described screw is involution nut, when involution nut is opened with feed leading screw and disengage, when involution nut is closed with feed leading screw and be meshed; The described motor that feeds is connected with reductor, frequency converter, and the amount of feeding is 0-180mm/min.
A kind of Rapid Thermal replacing method of converter bottom blowing air brick, it adopts following steps to complete:
(1) change as required the type of furnace of the converter of air brick, according to the scheme of above-mentioned porous core brick, protective sleeve brick, furnace bottom flange, cylinder flange, drilling machine, prepare above-mentioned parts and utensil;
(2) one heat steel water and residue before changing are gone out only, furnace bottom is shaken to the side of slagging tap, and that brick hole site that will change is parked in the height that is applicable to human body operation;
(3) operating platform is placed into stokehold by operating personnel, adjusts position fixing, and old air brick under fast dismantling is cleaned out the residue of the brick frustum of a cone part of trapping of protective sleeve brick and block mud;
(4) load onto drilling machine, by manual methods, drill bit is pushed into the position that needs boring, water flowing, switch on, adjust feed speed, start automatic drilling;
(5) coupon after boring thoroughly, pulls down drilling machine, insert brick hole with prefabricated and core brick shape, measure-alike coupon, load onto rapidly new air brick as suitable, otherwise artificial or facility continues correction, until can be inserted into position;
(6) on core brick, be coated with and wipe magnesia mud and put into rapidly in air brick hole, with bolt, flange is fastening, connect tail pipe, withdraw platform, ventilation inspection gas leakage is no;
(7) observe air brick installation situation from fire door, as errorless can Against molten iron-steelmaking, as large in fit clearance or have isolated island phenomenon, repaired by steel worker.
Usefulness of the present invention is:
1. quick change section set up by the air brick of original one-part form or two-part by porous core brick of the present invention, change syllogic into, the every row of rectangular or circular uniform stainless steel capillary or every circle be spaced and welding with it with anchoring piece, these structures all make the air brick damaging be easier to pull-out at hot lower ratio, reduce to greatest extent the residual brick of staying in stove, shorten the replacing time, made improved porous core brick be more suitable for Rapid Thermal and change.
2. the upper cover brick of protective sleeve brick of the present invention is on-line operation layer; material is high-grade magnesia carbon brick; the brick of trapping is indirect working lining; material is high-grade corundum castable, and this structure and material have good elevated temperature strength and the heat resistanceheat resistant performance of shaking, and has improved the intensity of protective sleeve brick; make protective sleeve brick can stand drilling and the vibration of drilling machine; adapt to the repeatedly replacing of core brick, therefore can carry out repeatedly hot swap, cost-saving, raise the efficiency.
Special drill facility of the present invention have feed speed can carry out stepless speed regulation, can auto-feed, manually fast advance and retreat, can be in the advantage of arbitrarily angled lower work.
4. the method that the present invention adopts can be changed the bottom-blown air brick of damage in the hot shorter time of lower use, and protective sleeve brick is able to stand repeatedly change and not bad, thereby a block converter is blown again in full stove labour.
Brief description of the drawings
Fig. 1 is structural representation of the present invention;
Fig. 2 is the connection diagram of porous core brick of the present invention;
Fig. 3 is the structural representation of porous core brick of the present invention;
Fig. 4 is that the A of Fig. 3 is to view;
Fig. 5 is that the B of Fig. 3 is to view;
Fig. 6 is protective sleeve brick structure schematic diagram of the present invention;
Fig. 7 is the top view of Fig. 6;
Fig. 8 is drilling machine structure schematic diagram of the present invention.
In figure, mark is as follows: porous core brick 1, protective sleeve brick 2, furnace bottom brick cup 3, furnace shell steel plate 4, furnace bottom flange 5, cylinder flange 6, drilling machine 7, core brick flange 8, top wire hole 9, epimere 10, stage casing 11, hypomere 12, air chamber 13, tail pipe 14, stainless steel capillary 15, anchoring piece 16, upper cover brick 17, the brick 18 of trapping, column 19, front end flange 20, rear end flanges 21, positioner 22, drill bit 23, drill bit motor 24, electric machine support 25, feed motor 26, feed leading screw 27, screw 28.
Detailed description of the invention
Converter bottom blowing air brick of the present invention comprises porous core brick 1, protective sleeve brick 2, furnace bottom flange 5, cylinder flange 6.
In figure, show, porous core brick 1 of the present invention is the syllogic porous core brick that a kind of applicable Rapid Thermal is changed, the feature of this brick is: (1) epimere 10 is the section of deteriorating, this section is the cylinder that diameter is less, appearance and size is: diameter * length=Φ (80～150) * (400～800) mm, cylinder physical efficiency is mated with socket type drill bit, and the less needed pore volume of diameter easily bores thoroughly. (2) stage casing 11 is quick change section; this section is the circular cone stage body that tapering is larger; appearance and size is: diameter/leave from office diameter * length=Φ (80～150)/Φ (120～180) * (150～300) mm appears on the stage; when hot swap; the residual brick of this circular cone stage body can be drawn out easily; without drilling, when the residual brick of drilling epimere or slag blanket, to destructiveness is very little, be conducive to protect the brick of trapping herein herein. (3) hypomere 12 is section of foundation, and this section is cylinder, and diameter is identical with stage casing 11 circular cone stage body bottom surface diameters, and length is identical with furnace bottom permanent layer thickness, and this section is untouchable cooperation with furnace bottom brick cup 3, while tearing residual brick open without any obstacle. (4) in brick, stainless steel capillary 15 specifications are: external diameter * wall thickness=Φ 5*1mm or Φ 4*1, the layout of this pipe on porous core brick 1 section is rectangular or circular, the pipe of every layer or every circle is equidistantly welded on stainless steel anchoring piece 16 and becomes one, while drawing residual brick, can avoid single pipe to be pulled off and easily residual brick all to be pulled out, more can avoid only capillary pull-out being left to residual brick; (5) the rigid snap joint that is connected to of core brick tail pipe 14 and furnace bottom tracheae, the overall process of changing is without welding procedure, can shorten 20 minutes replacing time: when (6) draw porous core brick 1 residual brick with big machinery, line of pull is difficult to aim at the center line of porous core brick 1, porous core brick 1 very easily fractures, for avoiding this situation, on core brick flange 8, design the top wire hole 9 of 4-8 M16～M24, while tearing second-hand brick open, first with jackscrew 9, porous core brick 1 is become flexible, then tool pulls out residual brick by hand, this method than, safety simple with big machinery, reliable, save time.
In figure, show; protective sleeve brick 2 of the present invention is the supporting protective sleeve bricks 2 of a kind of and porous core brick 1; protective sleeve brick 2 is by upper cover brick 17 and trap that brick 18 is two-layer to be formed; upper cover brick 17 is on-line operation layer; material is high-grade magnesia carbon brick, and the brick 18 of trapping is for indirect working lining, and material is high-grade corundum castable; this kind of material has good elevated temperature strength and the heat resistanceheat resistant performance of shaking, and can adapt to the repeatedly replacing of core brick. The fit clearance of the endoporus of protective sleeve brick 2 and porous core brick 1 frustum of a cone part is 1～2m, height 150～300mm, and upper and lower end face size is the multiple of furnace bottom brick cup 3.
In figure, show, the invention provides a kind of applicable Rapid Thermal and change the furnace bottom flange arrangement of above-mentioned air brick, this structure comprises furnace bottom flange 5, cylinder flange 6. Furnace bottom flange 5 is welded on furnace bottom opening part, and 4-8 root M20～M30 double end stainless steel screw is installed on furnace bottom flange 5, is used for connecting cylinder flange 6. Cylinder flange 6 two ends have respectively ring flange, centre is sleeve, the ring flange of cylinder flange 6 one end is connected with furnace bottom flange 5, the ring flange of cylinder flange 6 other ends is connected with drilling machine 7. Cylinder flange 6 can be finely tuned 6mm on any direction on furnace bottom flange 5, the object of fine setting be quasi-complement while building bottom brick by laying bricks or stones with the error of air brick generation, between two flanges, add the angular error of wedge piece capable of regulating air brick and furnace bottom, air brick to build precision by laying bricks or stones higher, the center line of drilling machine 7 and the center line of air brick are to must be more accurate, just fast and accurate when boring.
In figure, show, the invention provides a kind of applicable Rapid Thermal and change the Special drill machine 7 of above-mentioned air brick, drilling machine 7 by column 19, front end flange 20, rear end flanges 21, positioner 22, drill bit 23, drill bit motor 24, electric machine support 25, feed motor 26, feed leading screw 27, screw 28 forms. column 19 is three, parallelly lay along circumference, front end flange 20 is connected with the front and back end of column 19 with rear end flanges 21, positioner 22 is arranged on front end flange 20, drill bit 23 is sleeved in positioner 22, drill bit 23 is connected with drill bit motor 24, drill bit motor 24 is fixed in electric machine support 25, feed leading screw 27 parallel with column 19, one side of electric machine support 25 is connected with screw 28, screw 28 with feed leading screw 27 and be meshed, one end connection that feeds leading screw 27 feeds motor 26, feed the outside that motor 26 is arranged on rear end flanges 21, the front end flange 20 of drilling machine 7 is connected with cylinder flange 6. screw 28 is involution nut, when involution nut is opened with feed leading screw 27 and disengage, when involution nut is closed with feed leading screw 27 and be meshed.
The feature of above-mentioned Special drill machine 7 is: the front end flange 20 of (1) drilling machine 7 is identical with core brick flange 8, front end flange 20 and core brick flange 8 share the bolt hole of cylinder flanges 6, the termination of 7 three columns 19 of drilling machine replaces directly installation and removal on cylinder flange 6 fast of bolt, rig 7 can rotate with body of heater, can be in arbitrarily angled lower work, there is versatility, be suitable for the various type of furnaces. (2) drill bit 23 is diamond water collar cartridge type, bore diameter Φ 80～180mm, turn/min of rotating speed 500～600. (3) drill bit 23 energy auto-feeds while boring, amount of feeding 0-180mm/min is adjustable, and the involution nut feeding when auto-feed on leading screw 27 is in closure state. (4) manual fast advance and retreat when involution nut releasing orientation, manually fast advance and retreat can make to change drill bit 23 time shorten 10～15 minutes. (4) the circular orientation device 22 on rig front end flange 20 can reduce the throw of drill bit 23, and the vibration that alleviates drill bit 23 can improve precision and the speed of boring. (5) complete machine weight is no more than 120Kg, manually can manual installation and dismounting in the situation that there is no hanging device. (6) within 30～60 minutes, can bore under normal circumstances a hole.
In accompanying drawing, what in Fig. 1, show is to utilize the top wire hole 9 that has designed 4-8 M16～M24 on core brick flange 8, tool pulls out residual brick (comprising air chamber 13, tail pipe 14) by hand, and has removed core brick flange 8, then the front end flange of drilling machine 7 20 is connected with the bolt hole of cylinder flange 6. What Fig. 2 showed is not pull out before second-hand brick, and core brick flange 8 is connected with cylinder flange 6, and at this moment the air chamber 13 at porous core brick 1 and rear portion, tail pipe 14 are not drawn out.
The Rapid Thermal replacing method of converter bottom blowing air brick of the present invention, it adopts following steps to complete:
(1) change as required the type of furnace of the converter of air brick, according to the scheme of the designed porous core brick 1 of the present invention, protective sleeve brick 2, furnace bottom flange 5, cylinder flange 6, drilling machine 7, prepare above-mentioned parts and utensil;
(2) one heat steel water and residue before changing are gone out only, furnace bottom is shaken to the side of slagging tap, and that brick hole site that will change is parked in the height that is applicable to human body operation;
(3) operating platform is placed into stokehold by operating personnel, adjusts position fixing, and old air brick under fast dismantling is cleaned out the residue of brick 18 frustum of a cone parts of trapping of protective sleeve brick 2 and block mud;
(4) load onto drilling machine 7, by manual methods, drill bit 23 is pushed into the position that needs boring, water flowing, switch on, adjust feed speed, start automatic drilling;
(5) coupon after boring thoroughly, pulls down drilling machine 7, insert brick hole with prefabricated and core brick shape, measure-alike coupon, load onto rapidly new air brick as suitable, otherwise artificial or facility continues correction, until can be inserted into position;
(6) on core brick, be coated with and wipe magnesia mud and put into rapidly in air brick hole, with bolt, flange is fastening, connect tail pipe 14, withdraw platform, ventilation inspection gas leakage is no;
(7) observe air brick installation situation from fire door, as errorless can Against molten iron-steelmaking, as large in fit clearance or have isolated island phenomenon, repaired by steel worker.
Claims (5)
1. a converter bottom blowing air brick, is characterized in that: it comprises porous core brick (1), protective sleeve brick (2), furnace bottom flange (5); Described porous core brick (1) is connected to form by (12) three sections of epimeres (10), stage casing (11), hypomere, the front end of epimere (10) and inboard wall of furnace body flush, and the rear end of hypomere (12) flushes with furnace shell steel plate (4) inner side;
Described protective sleeve brick (2) is connected to form by upper cover brick (17) and the brick of trapping (18), the endoporus of upper cover brick (17) and the brick of trapping (18) matches with the periphery of porous core brick (1), upper cover brick (17) is magnesia carbon brick, the brick (18) of trapping is corundum castable, the front end of upper cover brick (17) and inboard wall of furnace body flush, the rear end of the brick of trapping (18) is connected with furnace bottom brick cup (3);
Described furnace bottom flange (5) is plane face flange, and furnace bottom flange (5) is welded on furnace bottom opening part, and furnace bottom flange (5) outside is connected with drilling machine (7) by bolt;
Epimere (10) and the hypomere (12) of described porous core brick (1) are cylinders, stage casing (11) is circular cone stage body, the top minor diameter round platform of the cylindrical diameter of epimere (10) and stage casing (11) circular cone stage body matches, the bottom major diameter round platform of the cylindrical diameter of hypomere (12) and stage casing (11) circular cone stage body matches, connect successively air chamber (13) and tail pipe (14) at the rear portion of hypomere (12), tail pipe (14) rear end sidewall is connected with core brick flange (8), tail pipe (14) rear end is connected with furnace bottom tracheae by rigid snap joint, in porous core brick (1), there is the epimere of running through (10), stage casing (11), the multiple parallel stainless steel capillary (15) of hypomere (12), stainless steel capillary (15) is rectangular or circular uniform on porous core brick (1) section, the pipe of every layer or every circle is equidistantly welded on stainless steel anchoring piece (16) and becomes one.
2. converter bottom blowing air brick according to claim 1, it is characterized in that: the diameter of the top minor diameter round platform of the cylindrical diameter of epimere (10) of described porous core brick (1) and stage casing (11) circular cone stage body is 80～150mm, the diameter of the bottom major diameter round platform of the cylindrical diameter of hypomere (12) and stage casing (11) circular cone stage body is 120～180mm, the cylindrical length of epimere (10) is 400～700mm, the length of stage casing (11) circular cone stage body is 150～300mm, and the length of hypomere (12) is identical with furnace bottom permanent layer thickness.
3. converter bottom blowing air brick according to claim 2; it is characterized in that: the endoporus of the upper cover brick (17) of described protective sleeve brick (2) and the periphery of porous core brick (1) epimere (10) match; the endoporus of brick (18) and the periphery of porous core brick (1) stage casing (11) circular cone stage body of trapping matches; fit clearance is 1～2mm; the height of upper cover brick (17) is 400-700mm, and the height of the brick of trapping (18) is 150-300mm.
4. converter bottom blowing air brick according to claim 3, it is characterized in that: between described furnace bottom flange (5) and drilling machine (7), be also connected with cylinder flange (6), there is respectively ring flange at the two ends of cylinder flange (6), centre is sleeve, the ring flange of cylinder flange (6) one end is connected with furnace bottom flange (5), and the ring flange of cylinder flange (6) other end is connected with the front end flange (20) of drilling machine (7).
5. the Rapid Thermal replacing method of a converter bottom blowing air brick, is characterized in that: it adopts following steps to complete:
（1）.Change as required the type of furnace of the converter of air brick, select porous core brick (1), protective sleeve brick (2), furnace bottom flange (5) described in claim 1,2,3 or 4; Select cylinder flange claimed in claim 4 (6);
（2）.One heat steel water and residue before changing are gone out only, furnace bottom is shaken to the side of slagging tap, and that brick hole site that will change is parked in the height that is applicable to human body operation;
（3）.Operating platform is placed into stokehold by operating personnel, adjusts position fixing, and old air brick under fast dismantling is cleaned out the residue of the brick of trapping (17) frustum of a cone part of protective sleeve brick (2) and block mud;
（4）.Load onto drilling machine (7), by manual methods, drill bit (23) is pushed into the position that needs boring, water flowing, switch on, adjust feed speed, start automatic drilling;
（5）.Coupon after boring thoroughly, pulls down drilling machine (7), insert brick hole with prefabricated and porous core brick (1) shape, measure-alike coupon, load onto rapidly new porous core brick (1) as suitable, otherwise artificial or facility continues correction, until can be inserted into position;
（6）.Wipe magnesia mud and put into rapidly in air brick hole upper painting of porous core brick (1), with bolt, flange is fastening, connect tail pipe (14), withdraw platform, ventilation inspection gas leakage is no;
（7）.Observe air brick installation situation from fire door, as errorless can Against molten iron-steelmaking, as large in fit clearance or have isolated island phenomenon, repaired by steel worker.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210164923.1A CN102676730B (en) | 2012-05-25 | 2012-05-25 | The Rapid Thermal replacing method of converter bottom blowing air brick, Special drill machine and air brick |
| CN201610083797.5A CN105463154A (en) | 2012-05-25 | 2012-05-25 | Drilling machine special for bottom blowing air brick of rotary furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210164923.1A CN102676730B (en) | 2012-05-25 | 2012-05-25 | The Rapid Thermal replacing method of converter bottom blowing air brick, Special drill machine and air brick |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201610083797.5A Division CN105463154A (en) | 2012-05-25 | 2012-05-25 | Drilling machine special for bottom blowing air brick of rotary furnace |
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| Publication Number | Publication Date |
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| CN102676730A CN102676730A (en) | 2012-09-19 |
| CN102676730B true CN102676730B (en) | 2016-05-11 |
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| CN201210164923.1A Active CN102676730B (en) | 2012-05-25 | 2012-05-25 | The Rapid Thermal replacing method of converter bottom blowing air brick, Special drill machine and air brick |
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| CN102676730A (en) | 2012-09-19 |
| CN105463154A (en) | 2016-04-06 |
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