CN1121600C - Method and apparatus for repairing inner liner of hot iron mixer - Google Patents
Method and apparatus for repairing inner liner of hot iron mixer Download PDFInfo
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- CN1121600C CN1121600C CN 00132566 CN00132566A CN1121600C CN 1121600 C CN1121600 C CN 1121600C CN 00132566 CN00132566 CN 00132566 CN 00132566 A CN00132566 A CN 00132566A CN 1121600 C CN1121600 C CN 1121600C
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Abstract
The present invention relates to a method and equipment for repairing an inner liner of a molten iron mixing trolley. A conical body part of the molten iron mixing trolley is divided into a plurality of parts in the circumferential direction, and casting mould plates are arranged in segments to cast the spaces among the mould plates and the broken surfaces of lining bricks with casting materials; the residual conical body part at the circumferential angle of 10 degrees to 45 degrees is directly cast on the broken surfaces of the lining bricks to form an integral repaired layer of the conical body part after the conical body part at the circumferential angle of 315 degrees to 350 degrees is cast and repaired in the steps. In the present invention, the conical body part is cast, repaired and constructed in a mould plate mode by adopting the casting materials, the obtained repaired layer has the advantages of high compactness and high molten iron flushing resisting capability. The repaired layer is a whole overspreading the whole conical body part, the thickness of the repaired layer reaches 50 to 300mm, and the problem of easy shedding of the repaired layer in the prior art is solved.
Description
The present invention relates to a kind of repairing inner liner of hot iron mixer method and equipment thereof, specifically the method for repairing and mending of inner liner of hot iron mixer cone portion and equipment thereof.
Metal mixer car is the transportation means of molten iron, and its effect is that molten iron is transported to converter steelmaking by blast furnace.Along with the raising that molten steel quality is required, in transportation, also to carry out desulfurizing iron and dephosphorization pre-treatment, and cause the aggravation of washing away of molten iron and slag to bricking, metal mixer car overhaul furnace life decline, the fastest position one cone portion of inner liner of hot iron mixer melting loss particularly, dig and repair because of limit by its shape can not to resemble to carry out the vertical tube part part, in case damage can only overhaul, so overhaul furnace life sharply descends, renewal expense significantly rises.At present, the method that some enterprises adopt when middle the repairing repair material with Al-SiC matter to spread upon cone portion melting loss maximum is repaired, and repairs thickness about 50mm.But because coating construction needs to strengthen water gaging, cause repair layer compactness poor, wear-resisting, easily come off, only be not 2～3 stoves work-ing life.In the prior art, comparatively Xian Jin cone portion method for repairing and mending is a vibration trowel vibratory compaction constructional method: at first, and at the former lining brick surface brush one deck high-temperature agglomerant of cone portion melting loss, then than large part, Al-SiC matter repair material is filled up at this position, and utilized the vibratory compaction of vibration trowel.This method construction thickness also only can reach 50～70mm, and work-ing life is between 30～70 stoves.Can only carry out the part owing to repair, still have poor, the caducous defective of repair layer globality.
The purpose of this invention is to provide a kind of repairing inner liner of hot iron mixer method and equipment thereof that can make cone portion obtain thicker and the globality repair layer that compactness is good, thereby prolonging overhaul furnace life is reduced maintenance cost.
The objective of the invention is to realize by following technical solution.
A kind of repairing inner liner of hot iron mixer method may further comprise the steps:
1) in metal mixer car inner cone subordinate side, in 30 °～180 ° entire axial length scopes of inscribed angle cast template is set, the outside surface of cast template is consistent with the inner conical surface of the repair layer that needs casting complete;
2) mould material is poured between template and the lining brick damaged surface by the cast template side forms repair layer;
3) health is at least 4 hours;
4) rotate metal mixer car, to go to the below with the cone portion of 30 °～100 ° at the repair layer next-door neighbour's of casting complete inscribed angle, in this position cone portion entire axial length scope cast template is set, the outside surface of cast template is consistent with the inner conical surface of the repair layer of casting complete;
5) mould material is poured between template and the lining brick damaged surface by the cast template side forms repair layer, the repair layer of this repair layer and next-door neighbour's casting complete is joined and is one;
6) health is at least 4 hours;
7) by above-mentioned 4)～6) after step proceeds to the cast of finishing 315 °～350 ° at cone portion inscribed angle and repair, the cone portion of 10 °～45 ° at inscribed angle of residue directly poured into a mould in the lining brick damaged surface form and the consistent repair layer of repair layer inner conical surface of casting complete, the repair layer of the casting complete that this repair layer and both sides are close to is joined and is one;
8) health is at least 4 hours;
9) remove whole cast templates;
10) repair layer was toasted 50～120 hours, final storing temperature is 700～1000 ℃.
After described cast template is removed, health at least 4 hours.
Described conditioned time is 12～48 hours.
Described bake process is as follows: in 10～30 hours, rise to 200～300 ℃ by normal temperature, be incubated 10～30 hours; In 10～30 hours, continue to be warming up to 500～600 ℃, be incubated 10～30 hours; In 10～30 hours, continue to be warming up to 700～1000 ℃, be incubated 10～30 hours.
A kind of equipment that is used for above-mentioned repairing inner liner of hot iron mixer method, mainly form by cross strut, centibar, center adapter sleeve, connecting rod and cast template, two length-adjustable cross struts of its supporting leg are supported on respectively on metal mixer car inner cone body top and the vertical tube part lining brick, its centre hole and metal mixer car medullary ray coaxial line; Centibar is installed and is supported in the centre hole of two cross struts, is set with at least 2 center adapter sleeves that are distributed with perpendicular to the radial screw bore of centibar on the centibar on every side; Length-adjustable connecting rod one end is installed in the threaded hole of center adapter sleeve, and the other end is connected with cast template; Cast template is arranged in the entire axial length scope of 315 °～350 ° at cone portion inscribed angle, outside surface is consistent with the inner conical surface of the repair layer that needs casting complete, on circumference, be divided into several parts that the radial screw bore with the center adapter sleeve is complementary, axially be divided into two portions at least and form the several piece cast template.
Described cast template axially is being divided into two portions, and every cast template is coupled by two connecting rods in the same axial plane at least.
Be distributed with 5～12 radial screw bore on the adapter sleeve of described center perpendicular to centibar.
The advantage that the present invention is compared with prior art had is: repairing inner liner of hot iron mixer method of the present invention adopts mould material that cone portion is carried out template cast reparation construction, and good, the anti-molten iron scouring capability of the repair layer compactness that is obtained is strong; Repair layer is the integral body that is covered with whole cone portion that thickness reaches 50～300mm, has solved the caducous problem of repair layer in the prior art; Thereby can protect damaged bricking effectively, and prolong the work-ing life of repair layer significantly, reduced maintenance cost.In addition, present device is simple in structure, is easy to install regulate reliable operation.
Below in conjunction with accompanying drawing embodiments of the invention are described in detail.
Fig. 1 is the structural representation of repairing inner liner of hot iron mixer equipment of the present invention.
Fig. 2 is the A-A sectional view of Fig. 1.
Fig. 3 is the B-B sectional view of Fig. 1.
The mending course synoptic diagram of the repairing inner liner of hot iron mixer method of the present invention that Fig. 4-Fig. 8 is reflected by the B-B section of Fig. 1.
Repairing inner liner of hot iron mixer equipment of the present invention as shown in Figure 1-Figure 3, mainly is made up of cross strut 1, centibar 2, center adapter sleeve 3, connecting rod 4 and cast template 5.Each supporting leg of cross strut 1 is made of two sections threaded rod members of processing and thread bush, and its length can be regulated by the rotation thread bush.Two cross struts 1 are supported on respectively on metal mixer car 7 inner cone body tops and the vertical tube part lining brick 6, its centre hole and metal mixer car 7 medullary ray coaxial lines.Centibar 2 is installed and is supported in the centre hole of two cross struts 1, is set with 4 on the centibar 2 and is distributed with 6 center adapter sleeves 3 perpendicular to the radial screw bore of centibar 2 on every side.Connecting rod 4 adopts identical adjustable length structure with the supporting leg of cross strut 1, and the one end is installed in the threaded hole of center adapter sleeve 3, and the other end is connected with cast template 5.Cast template 5 is arranged in the entire axial length scope of 345 ° at cone portion inscribed angle, and outside surface is consistent with original design lining brick 6 surfaces.Cast template 5 is divided into 6 parts that the radial screw bore with center adapter sleeve 3 is complementary on circumference, wherein the inscribed angle of 5 every part correspondences of part is 60 °, the corresponding inscribed angle of another one part is 45 °, axially is divided into two portions, forms 12 cast templates 5.Cast template 5 internal surfaces are provided with the reinforcement gusset, to improve its rigidity.The pin-and-hole that two projectioies are arranged on the both sides internal surface of every cast template 5, two connecting rods 4 adopt pin to be connected with cast template 5 through these two pin-and-holes, every connecting rod 4 can be connected by while two cast templates 5 adjacent with circumferential direction, cast template 5 being carried out fixed simultaneously, play the two adjacent cast template 5 interconnective effects that make.
Repairing inner liner of hot iron mixer method of the present invention adopts Al-SiC matter mould material that the metal mixer car cone portion is carried out globality and repairs, and comprises following concrete steps:
1) two cross struts 1 is supported on respectively on the lining brick 6 of metal mixer car 7 inner cone body tops and vertical tube part, regulates the medullary ray coaxial line that its supporting leg makes its centre hole and metal mixer car 7.Centibar 2 is installed and is supported in the centre hole of two cross struts 1, is set with 4 center adapter sleeves 3 on it.Adopting 6 corresponding inscribed angle is 60 ° cast template 5, be arranged in the entire axial length scope of 180 ° at cone portion below inscribed angle relative in the metal mixer car 7 with fire door, connecting rod 4 one ends are installed in the threaded hole of center adapter sleeve 3, the other end is connected with cast template 5, regulate connecting rod 4 and make cast template 5 outside surfaces consistent, with reference to Fig. 1-Fig. 3 with original design lining brick 6 surfaces;
2) mould material is poured between cast template 5 and lining brick 6 damaged surface by cast template 5 sides forms repair layer 8a, see Fig. 4;
3) health is 12 hours;
4) rotating counterclockwise metal mixer car 7, will be that 60 ° cone portion goes to the below with the next-door neighbour's of pouring section inscribed angle, see Fig. 5.Adopting 2 corresponding inscribed angle is 60 ° cast template 5, be arranged on this position cone portion inscribed angle and be in 60 ° the entire axial length scope, connecting rod 4 one ends are installed in the threaded hole of center adapter sleeve 3, the other end is connected with cast template 5, regulates connecting rod 4 and makes the outside surface of cast template 5 consistent with the inner conical surface of the repair layer 8a of casting complete;
5) mould material is poured between material feeding template 5 and lining brick 6 damaged surface by material feeding template 5 sides forms repair layer 8b, the repair layer 8a of this repair layer 8b and next-door neighbour's casting complete joins and is one;
6) health is 12 hours;
7) clockwise rotating metal mixer car 7, will be that 60 ° cone portion goes to the below with the next-door neighbour's of pouring section inscribed angle, see Fig. 6.Adopting 2 corresponding inscribed angle is 60 ° cast template 5, be arranged on this position cone portion inscribed angle and be in 60 ° the entire axial length scope, connecting rod 4 one ends are installed in the threaded hole of center adapter sleeve 3, the other end is connected with cast template 5, regulates connecting rod 4 and makes the outside surface of cast template 5 consistent with the inner conical surface of the repair layer 8a of casting complete;
8) mould material is poured between material feeding template 5 and lining brick 6 damaged surface by material feeding template 5 sides forms repair layer 8c, the repair layer 8a of this repair layer 8c and next-door neighbour's casting complete joins and is one;
9) health is 12 hours;
10) continuing to clockwise rotate metal mixer car 6, will be that 45 ° cone portion goes to the below with the next-door neighbour's of pouring section inscribed angle, see Fig. 7.Adopting 2 corresponding inscribed angle is 45 ° cast template 5, be arranged on this position cone portion inscribed angle and be in 45 ° the entire axial length scope, connecting rod 4 one ends are installed in the threaded hole of center adapter sleeve 3, the other end is connected with cast template 5, regulates connecting rod 4 and makes the outside surface of cast template 5 consistent with the inner conical surface of the repair layer 8b of casting complete;
11) mould material is poured between material feeding template 5 and lining brick 6 damaged surface by material feeding template 5 sides forms repair layer 8d, the repair layer 8b of this repair layer 8d and next-door neighbour's casting complete joins and is one;
12) health is 12 hours;
13) cast of having finished 345 ° at cone portion inscribed angle after the aforesaid operations step is repaired, the cone portion of 15 ° at remaining inscribed angle directly poured into a mould in lining brick 6 damaged surface form and repair layer 8c, the consistent repair layer 8e of 8d inner conical surface of casting complete, repair layer 8c, the 8d of this repair layer 8e and both sides next-door neighbour's casting complete join and are one, see Fig. 8;
14) health is 12 hours;
15) remove whole cast templates 5;
16) health is 12 hours;
17) repair layer 8 is toasted, its process is as follows: in 12 hours, rise to 250 ℃ by normal temperature, be incubated 12 hours; In 12 hours, continue to be warming up to 500 ℃, be incubated 12 hours; In 12 hours, continue to be warming up to 900 ℃, be incubated 12 hours.
On-the-spot practical probation result shows: the whole repair layer that adopts the inventive method casting and constructing to obtain, thoroughly solved the repair layer problem that easily comes off, in generation overhaul furnace life, need only carry out once-cast repairs, just can improve the work-ing life of 350～450 stoves, and reached and the final effect of melting loss synchronously of metal mixer car vertical tube part, can save a large amount of renewal expenses, reduce and repair cost.Adopting the inventive method cast to repair 12 metal mixer cars by 1 year calculates, can save renewal expense compared to prior art every year more than 7,000,000 yuan.
Claims (7)
1. repairing inner liner of hot iron mixer method is characterized in that it may further comprise the steps:
1) in metal mixer car (7) inner cone subordinate side, in 30 °～180 ° entire axial length scopes of inscribed angle cast template (5) is set, the outside surface of cast template (5) is consistent with the inner conical surface of the repair layer that needs casting complete (8);
2) mould material is poured between template (5) and lining brick (6) damaged surface by cast template (5) side forms repair layer (8);
3) health is at least 4 hours;
4) rotate metal mixer car (7), to go to the below with the cone portion of 30 °～100 ° at the next-door neighbour's of the repair layer of casting complete (8) inscribed angle, in this position cone portion entire axial length scope cast template (5) is set, the outside surface of cast template (5) is consistent with the inner conical surface of the repair layer of casting complete (8);
5) mould material is poured between template (5) and lining brick (6) damaged surface by cast template (5) side forms repair layer (8), this repair layer (8) is joined with the repair layer (8) of next-door neighbour's casting complete and is one;
6) health is at least 4 hours;
7) by above-mentioned 4)～6) after step proceeds to the cast of finishing 315 °～350 ° at cone portion inscribed angle and repair, cone portion to 10 °～45 ° at remaining inscribed angle is directly poured into a mould in lining brick (6) damaged surface, form and the consistent repair layer (8) of repair layer inner conical surface of casting complete, the repair layer (8) of the casting complete that this repair layer (8) and both sides are close to is joined and is one;
8) health is at least 4 hours;
9) remove whole cast templates (5);
10) repair layer (8) was toasted 50～120 hours, final storing temperature is 700～1000 ℃.
2. method according to claim 1 is characterized in that: after described cast template (5) is removed, and health at least 4 hours.
3. method according to claim 1 and 2 is characterized in that: described conditioned time is 12～48 hours.
4. method according to claim 1 is characterized in that described bake process is as follows: in 10～30 hours, rise to 200～300 ℃ by normal temperature, be incubated 10～30 hours; In 10～30 hours, continue to be warming up to 500～600 ℃, be incubated 10～30 hours; In 10～30 hours, continue to be warming up to 700～1000 ℃, be incubated 10～30 hours.
5. equipment that is used for the described repairing inner liner of hot iron mixer method of claim 1, it is characterized in that: mainly form by cross strut (1), centibar (2), center adapter sleeve (3), connecting rod (4) and cast template (5), two length-adjustable cross struts of its supporting leg (1) are supported on respectively on metal mixer car (7) inner cone body top and the vertical tube part lining brick, its centre hole and metal mixer car (7) medullary ray coaxial line; Centibar (2) is installed and is supported in the centre hole of two cross struts (1), is set with at least 2 center adapter sleeves (3) that are distributed with perpendicular to the radial screw bore of centibar (2) on the centibar (2) on every side; Length-adjustable connecting rod (4) one ends are installed in the threaded hole of center adapter sleeve (3), and the other end is connected with cast template (5); Cast template (5) is arranged in the entire axial length scope of 315 °～350 ° at cone portion inscribed angle, outside surface is consistent with the inner conical surface of the repair layer that needs casting complete, on circumference, be divided into several parts that the radial screw bore with center adapter sleeve (3) is complementary, axially be divided into two portions at least, form several piece cast template (5).
6. equipment according to claim 5 is characterized in that: described cast template (5) axially is being divided into two portions, and every cast template (5) is coupled by two connecting rods (4) in the same axial plane at least.
7. equipment according to claim 5 is characterized in that: be distributed with 5～12 radial screw bore perpendicular to centibar (2) on the described center adapter sleeve (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00132566 CN1121600C (en) | 2000-11-29 | 2000-11-29 | Method and apparatus for repairing inner liner of hot iron mixer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00132566 CN1121600C (en) | 2000-11-29 | 2000-11-29 | Method and apparatus for repairing inner liner of hot iron mixer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1300931A CN1300931A (en) | 2001-06-27 |
| CN1121600C true CN1121600C (en) | 2003-09-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 00132566 Expired - Fee Related CN1121600C (en) | 2000-11-29 | 2000-11-29 | Method and apparatus for repairing inner liner of hot iron mixer |
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| Country | Link |
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| CN (1) | CN1121600C (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103350221B (en) * | 2013-07-24 | 2015-06-10 | 武汉钢铁(集团)公司 | Method for maintaining and building 320-ton torpedo ladle cone working layer |
| CN105588445B (en) * | 2015-12-31 | 2017-11-14 | 安徽马钢工程技术集团有限公司 | A kind of quick method for dismounting of inner liner of hot iron mixer |
| CN106766928B (en) * | 2016-12-15 | 2019-03-22 | 攀枝花钢城集团有限公司 | Intermediate frequency furnace lining repairing method |
| CN109520305B (en) * | 2018-12-31 | 2024-04-12 | 广西玉柴机器股份有限公司 | Construction equipment and operation method for kiln nozzle of industrial smelting furnace |
| CN110962228B (en) * | 2019-12-17 | 2021-03-02 | 新疆八一钢铁股份有限公司 | Method for repairing KR stirring paddle |
| CN112629265A (en) * | 2020-12-21 | 2021-04-09 | 宝武重工有限公司 | Repairing method for inner liner of torpedo hot metal mixer car |
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2000
- 2000-11-29 CN CN 00132566 patent/CN1121600C/en not_active Expired - Fee Related
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| Publication number | Publication date |
|---|---|
| CN1300931A (en) | 2001-06-27 |
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Granted publication date: 20030917 Termination date: 20161129 |
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