CN103255256B - Method for building reusable iron mixing furnace top - Google Patents
Method for building reusable iron mixing furnace top Download PDFInfo
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- CN103255256B CN103255256B CN201310205984.2A CN201310205984A CN103255256B CN 103255256 B CN103255256 B CN 103255256B CN 201310205984 A CN201310205984 A CN 201310205984A CN 103255256 B CN103255256 B CN 103255256B
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Abstract
The invention discloses a method for building a reusable iron mixing furnace top, belonging to the field of iron mixing furnace maintenance. The method comprises the steps of: firstly, thickening a front arch skew plate and a rear arch skew plate; secondly, erecting an arch-shaped rotary tire on the front arch skew plate and the rear arch skew plate along the iron mixing furnace top and alternately building a small bevel brick group and a big bevel brick group along the arch-shaped rotary tire; then connecting the protruding big bevel brick group with a hanger; and finally welding the hanger to a shell of the furnace top. The iron mixing furnace top built by using the method can be retained during overhaul and can be reused, so that the overhaul material and the overhaul time are saved, the overhaul efficiency of an iron mixing furnace is enhanced, meanwhile the number of construction workers for overhaul can be reduced and therefore, the economic benefit of an enterprise is increased indirectly.
Description
Technical field
The present invention relates to a kind of hot metal mixer method for maintaining.
Background technology
Along with the reform and development of market economy, how to save energy and reduce the cost, reduce costs the problem of the attention that causes all enterprises, all the more so for iron and steel enterprise.Hot metal mixer in iron and steel enterprise just need to overhaul after having produced for some time, and service work is: blowing out, carry out the replacing of stove liner.When stove is torn in each maintenance open, find, the thin spot of stove liner is at iron underwater, and more than arch springing plate, furnace roof and furnace bottom are substantially intact.But during maintenance, often the liner of furnace roof and furnace bottom is removed together, then re-started and build by laying bricks or stones.Like this, both wasted material, and also wasted engineering time and workmen, and caused working efficiency low, economic benefit is not high.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of building method of reusable hot metal mixer furnace roof, the repair materials that furnace roof is reusable, saving furnace roof is used that the method is built by laying bricks or stones, shortening repair time, raising overhaul efficiency.
For solving the problems of the technologies described above, the technical solution used in the present invention is: a kind of building method of reusable hot metal mixer furnace roof, comprises the steps:
The first step, the front and back arch springing plate of reinforcing hot metal mixer: more than arch springing plate is thickeied to 30mm, reinforce the connection between 500mm welding gusset is to arch springing plate and body of heater along hot metal mixer furnace wall below arch springing plate;
Second step, overarches and revolves tire; Along the furnace roof shape of hot metal mixer, make arch and revolve tire, the two ends that described arch is revolved tire contact with arch springing plate;
The 3rd step, revolves tire along arch and builds furnace roof by laying bricks or stones: from one of them arch springing plate position, revolve tire little oblique brick group and large tiltedly brick group are alternately built by laying bricks or stones along arch, in the crack while building by laying bricks or stones between brick and brick, be bumped into connecting reinforcement; Then use suspension member is hung up outstanding large tiltedly brick group, then by suspension member and furnace roof welding;
The 4th step, removes arch and revolves tire: to be castly feel better after iron mouth, arch is revolved to tire and remove.
Described little oblique brick group above revolved along arch the little oblique brick that the shape of tire links together and is formed by two, and the length of described little oblique brick is 460mm, and thickness is 150mm, and wherein the width of one end is 88mm, and the width of the other end is 75mm; Described large tiltedly brick group is revolved along arch the large tiltedly brick that the shape of tire links together and is formed above by two, the described large tiltedly length of brick is 540mm, thickness is 150mm, and wherein the width of one end is that 90mm and this end are provided with the connecting through hole being connected with suspension member, and the width of the other end is 75mm.
The specification of described connecting reinforcement is: diameter 18mm length 25mm.
Described suspension member is comprised of the montant and the cross bar that clamp the folder frame of large tiltedly brick group, weld mutually with furnace roof; The rectangle frame that described folder frame is bottom opening is provided with the through hole suitable with cross bar on the frame of described rectangle frame both sides, and described montant is arranged on the mid-way of the upper side frame of folder frame.
Described suspension member is connected with large tiltedly brick group by the connecting through hole of cross bar and large tiltedly brick end.
In described suspension member, press from both sides frame, montant is made by band steel, cross bar is made by round steel.
The beneficial effect that adopts technique scheme to obtain is: use the hot metal mixer furnace roof that present method is built by laying bricks or stones can retain when maintenance, it can be reused, so both saved repair materials, shortened the repair time again, improved the overhaul efficiency of hot metal mixer; Also can reduce the construction number that inspection and repair shop is used, and then indirectly improved the economic benefit of enterprise simultaneously.
Accompanying drawing explanation
Fig. 1 is the structural representation while utilizing present method to build furnace roof by laying bricks or stones;
Fig. 2 is suspension member and the large tiltedly syndeton schematic diagram of brick group in the present invention;
Wherein, 1, furnace roof, 2, suspension member, 3, arch springing plate, 4, body of heater, 5, large tiltedly brick, 6, little oblique brick, 7, arch revolves tire, 8, gusset, 2-1, folder frame, 2-2, montant, 2-3, cross bar.
Embodiment
Below in conjunction with specific embodiment, method of the present invention is described in detail.
Embodiment 1
900 tons of hot metal mixer of steel-making portion of Xinxing Cast Pipes Co., Ltd hot metal mixer on March 25th, 2010 was produced through 15 months, after 3,030,000 tons of output of steels, carried out large repairs.After the inner lining body of body of heater 4 overall pulling down, according to the present invention, furnace roof is built by laying bricks or stones, concrete operation step is:
The first step, reinforce the front and back arch springing plate 3 of hot metal mixer: cut off the original arch springing plate 3 of hot metal mixer, be replaced by 30mm thick * the arch springing plate 3 of 7000mm length * 400mm, below arch springing plate 3, along hot metal mixer furnace wall, between 500mm welding 8 pairs of arch springing plates 3 of gusset and body of heater 4, reinforce the connection.
Second step, overarches and revolves tire 7; Along furnace roof 1 shape of hot metal mixer, make arch and revolve tire 7, the two ends that described arch is revolved tire 7 contact with arch springing plate 3.
The 3rd step, along arch, revolve tire 7 and build furnace roof 1 by laying bricks or stones: from one of them arch springing plate 3 position, along arch, revolving tire 7 alternately builds little oblique brick group and large tiltedly brick group by laying bricks or stones, described little oblique brick group is revolved along arch the little oblique brick 6 that the shape of tire 7 links together by three and is formed, described large tiltedly brick group is revolved along arch the large tiltedly brick 5 that the shape of tire 7 links together by two and is formed, and the length of little oblique brick 6 is 460mm, and thickness is 150mm, wherein the width of one end is 88mm, and the width of the other end is 75mm; The large tiltedly length of brick 5 is 540mm, and thickness is 150mm, and wherein the width of one end is 90mm, and the width of the other end is 75mm, is provided with and suspension member 2 connecting through holes in the end of wider one end.The thickness of large tiltedly brick 5 and little oblique brick 6 is equal, and the width of one end that both are shorter is also equal, and while building by laying bricks or stones, that shorter end revolves tire 7 with arch and contacts.While building by laying bricks or stones, can first build three little oblique bricks 6, form little oblique brick group, then building two large tiltedly bricks 5 by laying bricks or stones, form large tiltedly brick group, and then build little oblique brick 6 ..., rule is built by laying bricks or stones according to this, the object of building large tiltedly brick 5 by laying bricks or stones is exactly to be connected with suspension member 2 for convenient, and therefore large tiltedly brick 5 is also referred to as suspension member brick, in crack while building by laying bricks or stones between brick and brick, be bumped into connecting reinforcement, closely solid to guarantee to be connected between brick and brick, after having laid, use suspension member 2 that outstanding large tiltedly brick group is hung up, described suspension member 2 by clamp large tiltedly brick group folder frame 2-1, form with montant 2-2 and the cross bar 2-3 of the skin-deep welding of stove, the rectangle frame that described folder frame 2-1 is bottom opening, this rectangle frame can be surrounded large tiltedly brick group along outline, on the frame of described rectangle frame both sides, be provided with the through hole suitable with cross bar 2-3, cross bar 2-3 is sold into the large tiltedly connecting through hole of brick 5 ends and the through hole of rectangle frame both sides frame, 2-3 and 2-1 welding are formed whole, suspension member 2 has just linked together with large tiltedly brick group like this, finally by being arranged on the montant 2-2 in the mid-way of the upper side frame that presss from both sides frame 2-1, be welded on furnace roof 1, guaranteed like this to concentrate on the large tiltedly brick 5 of suspension member brick of suspension by 90% weight of little oblique brick 6 and the large tiltedly furnace roof 1 that brick 5 is built by laying bricks or stones.When building by laying bricks or stones, at furnace roof 1, will suitably encrypt by the large tiltedly density of brick 5 in Tie Kou position.
Utilize arch to revolve tire 7 and do end supporting and be subject to iron mouth mould, cast is subject to iron mouth.
The 4th step, removes arch and revolves tire 7: wait reached after intensity by iron mouth mould material, arch is revolved to tire 7 and remove.
In the present embodiment, the specification of described connecting reinforcement is: diameter 18mm length 25mm.Described suspension member 2 is made by band steel, and cross bar 2-3 can be used round steel to make, and also can use reinforcing bar to replace.
For the arch of furnace roof 1 is all built by laying bricks or stones with large tiltedly brick 5 and little oblique brick 6, just need to set up a plurality of arches and revolve tire 7, in order building by laying bricks or stones conveniently, to set up after what a arch is revolved tire 7 and first lay bricks, band has laid supposes that another arch revolves tire 7 again, then lays bricks ... so carrying out can.
This time maintenance duration is 35 days.
On June 22nd, 2011, this hot metal mixer was repaiied in determining to carry out after 2,830,000 tons of 14 months output of steels.After blowing out, according to the working of a furnace, determine to retain furnace roof 1 and furnace bottom, remove arch springing plate 3 and then again build by laying bricks or stones to furnace bottom screed-coat region.
When hot metal mixer 4 used a furnace life to prepare overhaul, concrete operations are as follows:
1) in stove, set up scaffolding, with color steel watt, set up protection canopy and prevent that furnace roof 1 scum silica frost from shaking and falling to pound people when removing;
2) directly remove front and back arch springing plate and below 3, wash away serious front-back wall refractory brick, headwall refractory brick and Tie Kou position refractory brick;
3), after front-back wall is built arch springing plate 3 positions by laying bricks or stones, outside stove skin, side hole is used mould material that arch springing plate 3 is closely knit with the gap cast of furnace wall;
4) headwall personnel to be onstructed in both sides cannot when building by laying bricks or stones in stove, use mould material cast from stove skin top drilling.
Maintenance for the second time lasted 30 days, than overall pulling down maintenance 5 days in advance.Only refractory materials is just saved 250 tons, by 2300 yuan per ton, amounts to 575000 yuan, and construction cost has also been saved approximately 100,000 yuan.
In practice of construction process, in large tiltedly brick group and little oblique brick group, the quantity of suspension member brick can be adjusted flexibly, in order to guarantee the stability of whole brick arch, can every 500mm, build one group of a fairly large number of large tiltedly brick group of large tiltedly brick along arch.
Augusts in 2012 15, this steel-making hot metal mixer was through the use of 13 months, maintenance again after 2,650,000 tons of output of steels.Through overall pulling down, find that furnace roof 1 is near being subject to Tie Kou position to wash away 200mm.According to the working of a furnace, see that this hot metal mixer furnace bottom can also re-use for one to two furnace life in generation.
Embodiment 2
160 tons of hot metal mixer of two cast tube portion of Xinxing Cast Pipes Co., Ltd in Mays, 2010 is according to new solution organizing construction.The present embodiment as different from Example 1, has 5 little oblique bricks 6 in little oblique brick group, have two large tiltedly bricks 5 in large tiltedly brick group.Each 500mm arranges the large tiltedly brick group that one group three large tiltedly bricks 5 form.Build like this that can to guarantee to build by laying bricks or stones the furnace roof 1 being more firm by laying bricks or stones.
Retain furnace roof 1 in May, 2012 and build rear use by laying bricks or stones and do not occur so far any problem, save 70 tons, refractory materials, per tonly press 2300 yuan, add up to and save 16.1 ten thousand yuan of materials cost.Than overall pulling down, within 3 days, complete in advance.
Claims (6)
1. a building method for reusable hot metal mixer furnace roof, is characterized in that comprising the steps:
The first step, reinforces the front and back arch springing plates (3) of hot metal mixer: arch springing plate (3) thickening, to more than 30mm, is welded to gusset (8) along hot metal mixer furnace wall every 500mm in arch springing plate (3) below and reinforced the connection between to arch springing plate (3) and body of heater (4);
Second step, overarches and revolves tire (7): along furnace roof (1) shape of hot metal mixer, make arch and revolve tire (7), the two ends that described arch is revolved tire (7) contact with arch springing plate (3);
The 3rd step, revolves tire (7) along arch and builds furnace roof (1) by laying bricks or stones: from one of them arch springing plate (3) position, revolve tire (7) little oblique brick group and large tiltedly brick group are alternately built by laying bricks or stones along arch, in the crack while building by laying bricks or stones between brick and brick, be bumped into connecting reinforcement; Then use suspension member (2) that outstanding large tiltedly brick group is hung up, then by suspension member (2) and furnace roof (1) welding;
The 4th step, removes arch and revolves tire (7): to be castly feel better after iron mouth, arch is revolved to tire (7) and remove.
2. the building method of reusable hot metal mixer furnace roof according to claim 1, it is characterized in that described little oblique brick group above revolve along arch the little oblique brick (6) that the shape of tire (7) links together and form by two, the length of described little oblique brick (6) is 460mm, thickness is 150mm, wherein the width of one end is 88mm, and the width of the other end is 75mm; Described large tiltedly brick group is revolved along arch the large tiltedly brick (5) that the shape of tire (7) links together and is formed above by two, the described large tiltedly length of brick (5) is 540mm, thickness is 150mm, wherein the width of one end is 90mm, and this end is provided with the connecting through hole being connected with suspension member (2), the width of the other end is 75mm.
3. the building method of reusable hot metal mixer furnace roof according to claim 1, is characterized in that the specification of described connecting reinforcement is: diameter 18mm, length 25mm.
4. the building method of reusable hot metal mixer furnace roof according to claim 1 and 2, is characterized in that described suspension member (2) is comprised of the montant (2-2) and the cross bar (2-3) that clamp the folder frame (2-1) of large tiltedly brick group, weld mutually with furnace roof (1); The rectangle frame that described folder frame (2-1) is bottom opening is provided with the through hole suitable with cross bar (2-3) on the frame of described rectangle frame both sides, and described montant (2-2) is arranged on the mid-way of the upper side frame of folder frame (2-1).
5. the building method of reusable hot metal mixer furnace roof according to claim 4, is characterized in that described suspension member (2) is connected with large tiltedly brick group by the connecting through hole of cross bar (2-3) and large tiltedly brick (5) end.
6. the building method of reusable hot metal mixer furnace roof according to claim 4, is characterized in that in described suspension member (2), folder frame (2-1), montant (2-2) are made by band steel, and cross bar (2-3) is made by round steel.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310205984.2A CN103255256B (en) | 2013-05-29 | 2013-05-29 | Method for building reusable iron mixing furnace top |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310205984.2A CN103255256B (en) | 2013-05-29 | 2013-05-29 | Method for building reusable iron mixing furnace top |
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| CN103255256B true CN103255256B (en) | 2014-09-17 |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0163866A1 (en) * | 1984-05-16 | 1985-12-11 | Krupp Polysius Ag | Ceiling and wall construction |
| CN1826502A (en) * | 2003-06-04 | 2006-08-30 | 哈茨有限公司 | Cooling and support systems for furnace roofs |
| CN101358261A (en) * | 2008-09-02 | 2009-02-04 | 武汉钢铁(集团)公司 | Masonry method of mixer |
| CN201620171U (en) * | 2010-02-05 | 2010-11-03 | 巩义市益丰耐火材料有限公司 | Mixer furnace |
-
2013
- 2013-05-29 CN CN201310205984.2A patent/CN103255256B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0163866A1 (en) * | 1984-05-16 | 1985-12-11 | Krupp Polysius Ag | Ceiling and wall construction |
| CN1826502A (en) * | 2003-06-04 | 2006-08-30 | 哈茨有限公司 | Cooling and support systems for furnace roofs |
| CN101358261A (en) * | 2008-09-02 | 2009-02-04 | 武汉钢铁(集团)公司 | Masonry method of mixer |
| CN201620171U (en) * | 2010-02-05 | 2010-11-03 | 巩义市益丰耐火材料有限公司 | Mixer furnace |
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| CN103255256A (en) | 2013-08-21 |
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