CN101672576A - Furnace hearth of maintaining room of aluminum alloy melting furnace built by combining casting materials with precast bricks - Google Patents
Furnace hearth of maintaining room of aluminum alloy melting furnace built by combining casting materials with precast bricks Download PDFInfo
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- CN101672576A CN101672576A CN200910187747A CN200910187747A CN101672576A CN 101672576 A CN101672576 A CN 101672576A CN 200910187747 A CN200910187747 A CN 200910187747A CN 200910187747 A CN200910187747 A CN 200910187747A CN 101672576 A CN101672576 A CN 101672576A
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Abstract
The invention discloses a furnace hearth of a maintaining room of an aluminum alloy melting furnace built by combining casting materials with precast bricks. The furnace hearth overcomes the problem of shrunken pass-through sews in the furnace hearth of the existing maintaining room. The furnace hearth is characterized in that a firebrick layer is an aluminum liquid contact layer which is paved bycombining the high alumina casting materials with the precast bricks, and the middle positions of the precast bricks are previously provided with ring-shaped grooves on the height direction. The furnace hearth has the benefits that the building process of the furnace hearth of the maintaining room of the aluminum alloy melting furnace is simple and fast due to the structure built by combining thehigh alumina casting materials with the precast bricks, and quincuncial piles-shaped technology seams are formed on the surface of an aluminum liquid contact layer due to the convex-concave-shaped technology seams are formed between the precast bricks and the high alumina casting materials on the perpendicular direction, thereby preventing the furnace hearth from having straightway sews along theheight direction thereof, preventing the baked furnace hearth from having longer and irregular shrunken pass-through sews, being capable of completely removing the thermal expansion stress in the process of dispelling under the condition that the stability of the precast bricks main body structure and the quality is guaranteed, leading the furnace hearth not to be uplifted, and obviously improving the building quality and the service life of the furnace hearth.
Description
Affiliated technical field
The invention belongs to a kind of tower aluminium alloy continuous melting stove holding chamber siege masonry technology field in the non-ferrous metals casting, particularly a kind of furnace hearth of maintaining room of aluminum alloy melting furnace of built by combining casting materials with precast bricks.
Background technology
Tower aluminium alloy continuous melting stove from last century late nineteen seventies come out in Japan, compare with the cell-type melting furnace, this stove is by tower portion, three parts of melting chamber and holding chamber are formed, be furnished with fuel (oil or gas) burner in the stove and aluminium alloy carried out heat fused and insulation with the direct flame way of contact, flue gas flow direction and aluminium alloy flow direction that burning generates are reverse, aluminium alloy ingots to be melted and foundry returns drop into and accept fume afterheat by tower portion top, then be fused into aluminium liquid and enter the holding chamber insulation, go out aluminium liquid by the technological requirement temperature, carry out aluminium alloy castings production.Because this stove tower portion in order to splendid attire and preheating aluminium ingot, not only can reduce the fusion process unit consumption, also can realize continuous melting.Aluminium liquid after the fusing enters holding chamber and is incubated, and periodically goes out aluminium liquid by productive temp, and for this reason, holding chamber aluminium liquid maintenance dose usually is several times as much as per hour aluminium ingot fusing amount, and holding chamber aluminium liquid maintenance dose involved in the present invention is generally more than 6 tons.Aluminium liquid maintenance dose increases, and the holding chamber diameter also will strengthen.During hot operation, acting on holding chamber bottom oven material thermal expansion stress assembles and stack to the siege center, the usefulness standard high-alumina brick that adopted of the holding chamber siege masonry technology siege of building by laying bricks or stones in the past, bear the thermal expansion stress effect of incessantly assembling and superposeing to the siege center, siege can swell gradually, cause the stove material to damage, influence its service life.Therefore, all adopt the whole ramming technology of high alumina castable to replace the siege that high-alumina brick is built by laying bricks or stones with siege portion in recent years, but, long shrinkage perforation seam usually appears in the siege that this usefulness is watered the whole ramming of material feeding behind baker, must be repaired before use, to the siege quality and have potential influence service life.
Summary of the invention
Technical problem to be solved by this invention is, a kind of furnace hearth of maintaining room of aluminum alloy melting furnace of built by combining casting materials with precast bricks is provided, to overcome the siege that siege was brought that employing standard high-alumina brick builds by laying bricks or stones protuberance gradually in use, and adopt high alumina castable to carry out the contraction that the whole ramming of siege brought to connect the technical problem of seam, thereby the long and irregular contraction of avoiding being produced behind the holding chamber siege baker connect seam or use after the problem of protuberance gradually.
The technical solution adopted in the present invention is, siege of the present invention includes insulation flaggy, insulating brick-layer, the refractory casting bed of material and fire brick layer, it on fire brick layer the aluminium liquid contact layer of laying in conjunction with preformed bricks by high alumina castable, the centre position of described preformed bricks on short transverse is reserved with circumferential groove, ramming has high alumina castable around described preformed bricks, form convex-concave engagement shape technology seam between described preformed bricks and the high alumina castable in vertical direction, on aluminium liquid contact layer surface, form quincuncial pile technology seam.
Described preformed bricks is a cuboid, and preformed bricks upper surface and preformed bricks lower surface are square, and the degree of depth of the circumferential groove that the centre position is reserved on short transverse is 14～15mm.
The high alumina castable of described ramming exceeds 4～5 millimeters than preformed bricks.
The invention has the beneficial effects as follows:
1. the circumferential groove that the centre position of preformed bricks of the present invention on its short transverse is reserved with, when being built by laying bricks or stones, it between the preformed bricks of siege aluminium liquid contact layer and high alumina castable, forms convex-concave engagement shape technology seam in vertical direction, on aluminium liquid contact layer surface, form quincuncial pile technology seam, both can prevent siege the straight-through seam of short transverse to occur, and avoid the siege surface long contraction to occur again and connect seam.
2. the manufacture craft of preformed bricks of the present invention is simple; and still adopt general high alumina castable; material cost does not increase; only increase preformed bricks and made and built by laying bricks or stones two procedures; and because the structure that adopts high alumina castable to build by laying bricks or stones in conjunction with preformed bricks; make the furnace hearth of maintaining room of aluminum alloy melting furnace building process simple and easy quick; in the construction; the high alumina castable of ramming exceeds 4～5 millimeters than preformed bricks; preformed bricks is also played a protective role; compare with the whole ramming siege that adopts before this; not only owing to have the technological design seam between preformed bricks and the high alumina castable; the long and irregular contraction that can avoid being produced behind the baker connects seam; and based on the stability under preformed bricks body construction and the weight assurance, compare with the brick siege of standard high alumina, can fully clear up the thermal expansion stress in the use; siege can not swell, and siege masonry quality and service life are significantly improved.
Description of drawings
Fig. 1 is a preformed bricks structural front view of the present invention,
Fig. 2 is the left view of Fig. 1,
Fig. 3 is the vertical view of Fig. 1,
Fig. 4 is the A-A cutaway view of Fig. 1,
Fig. 5 is a furnace hearth of maintaining room of aluminum alloy melting furnace masonry construction cutaway view of the present invention,
Fig. 6 is the B-B cutaway view of Fig. 5.
Among the figure:
1. insulation flaggy, 2. insulating brick-layer, 3. the refractory casting bed of material, 4. fire brick layer, 5. high alumina castable, 6. preformed bricks, 7. preformed bricks upper surface, 8. circumferential groove, 9. preformed bricks lower surface.
The specific embodiment
The present invention is further described below in conjunction with the drawings and specific embodiments.
As Fig. 5 and shown in Figure 6, the furnace hearth of maintaining room of aluminum alloy melting furnace of built by combining casting materials with precast bricks of the present invention, include insulation flaggy 1, insulating brick-layer 2, the refractory casting bed of material 3 and fire brick layer 4, it on fire brick layer 4 the aluminium liquid contact layer of laying in conjunction with preformed bricks 6 by high alumina castable 5, the centre position of described preformed bricks 6 on short transverse is reserved with circumferential groove 8, ramming has high alumina castable 5 around described preformed bricks 6, form convex-concave engagement shape technology seam between described preformed bricks 6 and the high alumina castable 5 in vertical direction, on aluminium liquid contact layer surface, form quincuncial pile shape technology seam.
As Fig. 1～shown in Figure 4, preformed bricks 6 of the present invention adopts general high alumina castable, adds once to pour into moulding in the wooden model of making in advance after water fully mixes, and forms through low temperature drying and high temperature sintering.Described preformed bricks 6 is a cuboid, produce straight-through up and down seam for fear of preformed bricks and high alumina castable in vertical direction, guarantee that preformed bricks 6 and high alumina castable 5 form convex-concave engagement shape technology seam in vertical direction at building process, the centre position of preformed bricks 6 on short transverse is reserved with the circumferential groove 8 that width is 14～15mm, and circumferential groove 8 consistent size; In order to guarantee that preformed bricks 6 and high alumina castable 5 form quincuncial pile shape technology seam at building process on siege aluminium liquid contact layer surface, preformed bricks upper surface 7 and preformed bricks lower surface 9 are square.
As shown in Figure 5, in the construction, the high alumina castable 5 of ramming exceeds 4～5 millimeters than preformed bricks 6.
Claims (3)
1. the furnace hearth of maintaining room of aluminum alloy melting furnace of a built by combining casting materials with precast bricks, include insulation flaggy (1), insulating brick-layer (2), the refractory casting bed of material (3) and fire brick layer (4), it is characterized in that, go up the aluminium liquid contact layer of laying in conjunction with preformed bricks (6) for by high alumina castable (5) at fire brick layer (4), the centre position of described preformed bricks (6) on short transverse is reserved with circumferential groove (8), described preformed bricks (6) on every side ramming high alumina castable (5) is arranged, form convex-concave engagement shape technology seam between described preformed bricks (6) and the high alumina castable (5) in vertical direction, on aluminium liquid contact layer surface, form quincuncial pile technology seam.
2. the furnace hearth of maintaining room of aluminum alloy melting furnace of a kind of built by combining casting materials with precast bricks according to claim 1, it is characterized in that, described preformed bricks (6) is a cuboid, preformed bricks (6) upper surface (7) and lower surface (9) are square, and the degree of depth of the circumferential groove (8) that the centre position is reserved on short transverse is 14～15mm.
3. the furnace hearth of maintaining room of aluminum alloy melting furnace of a kind of built by combining casting materials with precast bricks according to claim 1 is characterized in that, the high alumina castable of described ramming (5) exceeds 4～5 millimeters than preformed bricks (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910187747A CN101672576A (en) | 2009-09-29 | 2009-09-29 | Furnace hearth of maintaining room of aluminum alloy melting furnace built by combining casting materials with precast bricks |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910187747A CN101672576A (en) | 2009-09-29 | 2009-09-29 | Furnace hearth of maintaining room of aluminum alloy melting furnace built by combining casting materials with precast bricks |
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| CN101672576A true CN101672576A (en) | 2010-03-17 |
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| CN200910187747A Pending CN101672576A (en) | 2009-09-29 | 2009-09-29 | Furnace hearth of maintaining room of aluminum alloy melting furnace built by combining casting materials with precast bricks |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102967148A (en) * | 2012-12-04 | 2013-03-13 | 沈恩有 | Fireproof construction method for hearth of ferro-nickel furnace with power of over 16,500 KW |
| CN105571325A (en) * | 2015-12-24 | 2016-05-11 | 四川德胜集团钒钛有限公司 | Fireproof device of ring cooling machine receiving hopper |
| CN106288806A (en) * | 2015-05-11 | 2017-01-04 | 中国恩菲工程技术有限公司 | Metallurgical furnace |
| EP3193115A1 (en) * | 2016-01-18 | 2017-07-19 | TYK Corporation | Fired precast block |
| CN114380609A (en) * | 2022-02-21 | 2022-04-22 | 江苏朗耐德耐火材料有限公司 | Refractory material for deacidification furnace refractory layer and preparation method thereof |
-
2009
- 2009-09-29 CN CN200910187747A patent/CN101672576A/en active Pending
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102967148A (en) * | 2012-12-04 | 2013-03-13 | 沈恩有 | Fireproof construction method for hearth of ferro-nickel furnace with power of over 16,500 KW |
| CN106288806A (en) * | 2015-05-11 | 2017-01-04 | 中国恩菲工程技术有限公司 | Metallurgical furnace |
| CN106288806B (en) * | 2015-05-11 | 2018-09-11 | 中国恩菲工程技术有限公司 | metallurgical furnace |
| CN105571325A (en) * | 2015-12-24 | 2016-05-11 | 四川德胜集团钒钛有限公司 | Fireproof device of ring cooling machine receiving hopper |
| EP3193115A1 (en) * | 2016-01-18 | 2017-07-19 | TYK Corporation | Fired precast block |
| US20170205144A1 (en) * | 2016-01-18 | 2017-07-20 | Tyk Corporation | Fired precast block |
| US10281212B2 (en) * | 2016-01-18 | 2019-05-07 | Tyk Corporation | Fired precast block |
| CN114380609A (en) * | 2022-02-21 | 2022-04-22 | 江苏朗耐德耐火材料有限公司 | Refractory material for deacidification furnace refractory layer and preparation method thereof |
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Open date: 20100317 |