CN104962697A - RH vacuum refining furnace lifting pipe - Google Patents
RH vacuum refining furnace lifting pipe Download PDFInfo
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- CN104962697A CN104962697A CN201510267334.XA CN201510267334A CN104962697A CN 104962697 A CN104962697 A CN 104962697A CN 201510267334 A CN201510267334 A CN 201510267334A CN 104962697 A CN104962697 A CN 104962697A
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- steel structure
- structure framework
- refining furnace
- liner tile
- vacuum refining
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- Treatment Of Steel In Its Molten State (AREA)
Abstract
The invention discloses a RH vacuum refining furnace lifting pipe. The RH vacuum refining furnace lifting pipe comprises a steel structure framework, lining bricks, reinforcing claws, a steel screen, and insetting rings; the lining bricks are arranged in the steel structure framework; the gaps between the lining bricks and the steel structure framework are filled with an inner lining pouring material; the lower parts of the lining bricks are provided with the inserting rings which are inserted into the lining bricks; the inserting rings are connected with the steel structure framework via welding; the upper parts and the lower parts of annular inserting parts of the inserting rings are fixed with the inner lining pouring material so as to avoid shedding of the lining bricks; the reinforcing claws are uniformly distributed around the steel structure framework, and are connected with the periphery of the steel structure framework via welding; the periphery of the reinforcing claws is provided with a layer of the steel screen via welding; the periphery of the steel structure framework, which is provided with the reinforcing claws and the steel screen, is provided with an integrated periphery pouring material, wherein the integrated periphery pouring material is obtained via periphery pouring mould sleeve pouring. According to the RH vacuum refining furnace lifting pipe, the deep-type inserting rings are arranged at the lower parts of the lining bricks; the magnesia spinel lining bricks, which are obtained without high temperature roasting and are friendly to the environment, are adopted; fire resistance, thermal shock resistance, steel slag erosion resistance, and molten steel scouring resistance are excellent; and service life is prolonged obviously.
Description
Technical field
The present invention relates to metallurgical refining techniques field, particularly relate to RH vacuum refining furnace fall way.
Background technology
Along with nuclear industry, the development of outer space and sea boring modern science and technology, proposes more and more higher requirement to life-span of ferrous materials, reliability.And the existence of some element is the reliable of harm ferrous materials and long-lived important factor in steel, and the smelting that wherein some element carries out in atmospheric conditions cannot be removed.For adapting to the Production requirement of high-quality high cleanliness and multi-element alloyed molten steel, external refining obtains applies widely, result in Iron and Steel Production producer and adopt RH refining route more and more, namely under vacuum chamber condition, molten steel enters bottom vacuum chamber through upcast, return in steel teeming ladle through downtake again, form molten steel circulation, thus under vacuum to the steel refining treatment that molten steel carries out being mingled with in decarburization, deoxidation, alloying, purification and minimizing steel etc.It is the key device of production high-quality steel.RH vacuum processing techniques is the multi-functional secondary refining method that effectively can improve steel quality.The fall way of RH vacuum treatment device is made up of hardware and refractory materials, and the refractory materials used can bear the harsh chemical effect of extremely cold very hot, thump, high vacuum condition and various basicity slag, alloying constituent.Fall way is again the swiftly flowing passage of molten steel, and working temperature is high.Because of in periodical operation and long-time immersion molten steel and slag liquid, work under bad environment, requiring the harshest to its overall performance, is the weakest link of RH refining unit.Traditional fall way liner adopts two rings or three ring magnesia chrome bricks composition, and along with the continuous lifting of high added value steel grade output, the production based model for load duration of RH vacuum refining device increases, and for adapting to high loading, the chromium content of magnesia chrome brick is also improved constantly.But magnesia chrome brick produces high valence chrome in applied at elevated temperature process in the basic conditions, aggravate with the rising of temperature, high valence chrome is human carcinogen's material.Now, the strategy of sustainable development is in widespread attention, burns till and volatilize in applied at elevated temperature under alkaline condition to magnesia chrome brick high temperature, and useless magnesia chrome brick is stacked, landfill dissolves in the environmental pollution that underground water causes and causes general concern.The Trend of Chrome-free of RH vacuum treatment device fire proof material of furnace lining is paid much attention in recent years.In addition, the problem that the fall way in the past manufactured is common is that the continuous erosion along with fall way lower end mould material is come off by the thinning rear inner lining brick of molten damage and causes fall way to be scrapped, and the fall way life-span is significantly reduced.
Summary of the invention
The technical problem to be solved in the present invention is, provide a kind of adopt burn till without high temperature, the magnesia spinel liner tile of nonpollution environment, and refractoriness is high, good thermal shock, resistance to slag corrodes, and resistance to molten steel washes away, and significantly improves the RH vacuum refining furnace fall way in work-ing life.
The technical scheme adopted is:
RH vacuum refining furnace fall way, comprises steel structure framework, liner tile, reinforcing pawl, expanded metal lath, embedded ring.In described steel structure framework, liner tile is set, gap casting lining mould material between liner tile and steel structure framework, liner tile bottom is provided with the embedded ring inserted in liner tile, embedded ring is welded on steel structure framework, the annular of embedded ring inlay part up and down fix by inner lining pouring material, prevent liner tile from coming off.Described reinforcing pawl to be evenly laid in around steel structure framework and to be welded on around steel structure framework, reinforces pawl peripheral solder one deck expanded metal lath.The described steel structure framework periphery reinforcing pawl and expanded metal lath that is welded with pours into by peripheral cast die sleeve the periphery mould material be integrally connected.
Above-mentioned liner tile is nuisanceless magnesia spinel liner tile of not burning till.
The bottom of above-mentioned liner tile adopts turbination structure, adds steel structure framework and periphery mould material to its anchorage force.
Above-mentioned steel structure framework lower end is welded with the conical support plate corresponding with liner tile bottom turbination, and upper end is welded with the web plate be connected with vacuum chamber lower channel.
Above-mentioned RH vacuum refining furnace fall way, wherein upcast is provided with Argon pipe.
The present invention is provided with in liner tile bottom and gos deep into formula embedded ring, improves RH fall way bottom soundness, avoids liner tile to sink to coming off and cause fall way to be scrapped; The bottom of liner tile adopts turbination structure, adds steel construction and mould material to its anchorage force; Liner tile adopt does not burn magnesia spinel liner tile, magnesia chrome brick than ever without the injury of high valence chrome to human body, environmental protection; Refractoriness is high, therefore considerably improves the work-ing life of RH fall way.
Accompanying drawing explanation
Fig. 1 is riser structural schematic diagram of the present invention.
Fig. 2 is downcomer structure schematic diagram of the present invention.
Embodiment
RH vacuum refining furnace fall way, comprises steel structure framework 1, liner tile 2, reinforces pawl 4, expanded metal lath 5, embedded ring 8.In described steel structure framework 1, liner tile 2 is set, liner tile 2 is the nuisanceless magnesia spinel liner tile without burning till, described magnesia spinel liner tile bottom adopts turbination structure (see Fig. 1 or Fig. 2), adds steel structure framework and periphery mould material to its anchorage force.Gap casting lining mould material 6 between described liner tile 2 and steel structure framework 1, liner tile 2 bottom is provided with the embedded ring 8 inserted in liner tile, embedded ring 8 is welded on steel structure framework 1, the annular of embedded ring 8 inlay part up and down fix by inner lining pouring material 6, prevent liner tile from coming off.Described reinforcing pawl 4 to be evenly laid in around steel structure framework 1 and to be welded on around steel structure framework, reinforces pawl 4 peripheral solder one deck expanded metal lath 5.Described steel structure framework 1 periphery reinforcing pawl 4 and expanded metal lath 5 that is welded with pours into by peripheral cast die sleeve the periphery mould material 3 be integrally connected.Described steel structure framework 1 lower end is welded with the conical support plate 7 corresponding with liner tile bottom turbination, and upper end is welded with the web plate 9 be connected with vacuum chamber lower channel, and form RH vacuum refining furnace fall way, wherein upcast is provided with Argon pipe 10.
This RH vacuum refining furnace fall way innovative point is:
1, RH fall way bottom soundness is improved, liner tile is avoided to sink to coming off, be provided with in liner tile bottom and go deep into formula embedded ring, this annular inlay part up and down fix by inner lining pouring material, thus prevent because bottom mould material is come off by the thinning rear inner lining brick of molten damage and cause fall way to be scrapped;
2, the bottom of RH fall way liner tile adopts turbination structure, adds steel construction and mould material to its anchorage force;
3, increase thickness and the intensity of bottom pouring material, ensure fall way resistance to overturning;
4, magnesia spinel liner tile is not burnt in employing.The refractoriness (during 0.2MPA softening temperature) >=1620 DEG C of this brick.This material refractoriness is high, good thermal shock, and resistance to ladle slag corrodes, and resistance to molten steel washes away.Therefore work-ing life is considerably improved.
Overall RH fall way uses through India TATA and JSW steel mill, work-ing life 160 ~ 205 times.Improve 100 times than domestic like product work-ing life (60 ~ 100 times), double many, reach international most advanced level.
Claims (5)
1.RH vacuum refining furnace fall way, comprise steel structure framework (1), liner tile (2), reinforce pawl (4), expanded metal lath (5), embedded ring (8), it is characterized in that arranging liner tile (2) in described steel structure framework (1), gap casting lining mould material (6) between liner tile (2) and steel structure framework (1), liner tile (2) bottom is provided with the embedded ring (8) inserted in liner tile, embedded ring (8) is welded on steel structure framework (1), the annular of embedded ring (8) inlay part up and down fix by inner lining pouring material (6); Described reinforcing pawl (4) is evenly laid in steel structure framework (1) surrounding and is welded on steel structure framework (1) around, reinforces pawl (4) peripheral solder one deck expanded metal lath (5); Described steel structure framework (1) periphery reinforcing pawl and expanded metal lath that is welded with pours into by peripheral cast die sleeve the periphery mould material (3) be integrally connected.
2. RH vacuum refining furnace fall way according to claim 1, is characterized in that described liner tile (2) is the magnesia spinel liner tile of not burning till.
3. RH vacuum refining furnace fall way according to claim 1, is characterized in that the bottom of described liner tile (2) adopts turbination structure.
4. the RH vacuum refining furnace fall way according to claim 1 or 3, it is characterized in that described steel structure framework (1) lower end is welded with the conical support plate (7) corresponding with liner tile bottom turbination, upper end is welded with the web plate (9) be connected with vacuum chamber lower channel.
5. RH vacuum refining furnace fall way according to claim 1, it is characterized in that described RH vacuum refining furnace fall way, wherein upcast is provided with Argon pipe (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510267334.XA CN104962697A (en) | 2015-05-25 | 2015-05-25 | RH vacuum refining furnace lifting pipe |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510267334.XA CN104962697A (en) | 2015-05-25 | 2015-05-25 | RH vacuum refining furnace lifting pipe |
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| CN104962697A true CN104962697A (en) | 2015-10-07 |
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| CN201510267334.XA Pending CN104962697A (en) | 2015-05-25 | 2015-05-25 | RH vacuum refining furnace lifting pipe |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106011389A (en) * | 2016-07-14 | 2016-10-12 | 武汉钢铁股份有限公司 | Low-stress dipping pipe for RH vacuum furnace |
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| CN201381343Y (en) * | 2009-03-19 | 2010-01-13 | 宜兴新威利成耐火材料有限公司 | Steel-refining RH stove dip pipe |
| CN201411471Y (en) * | 2009-04-30 | 2010-02-24 | 鞍山市量子炉材集团有限公司 | RH immersion tube of composite vacuum degasser |
| CN201737974U (en) * | 2010-06-11 | 2011-02-09 | 宝山钢铁股份有限公司 | Dip pipe steel liner of RH refining equipment |
| CN102560010A (en) * | 2012-02-23 | 2012-07-11 | 鞍山市奥鞍耐火材料有限责任公司 | Dip pipe for RH refining furnace |
| CN202885542U (en) * | 2012-04-13 | 2013-04-17 | 宜兴新威利成耐火材料有限公司 | Dip pipe for RH refining furnace |
| CN203474836U (en) * | 2013-09-05 | 2014-03-12 | 浙江自立股份有限公司 | RH refining furnace dip pipe for preventing nitrogen from being added into molten steel |
| CN204644397U (en) * | 2015-05-25 | 2015-09-16 | 丹东播磨耐火材料有限公司 | RH vacuum refining furnace fall way |
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2015
- 2015-05-25 CN CN201510267334.XA patent/CN104962697A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201381343Y (en) * | 2009-03-19 | 2010-01-13 | 宜兴新威利成耐火材料有限公司 | Steel-refining RH stove dip pipe |
| CN201411471Y (en) * | 2009-04-30 | 2010-02-24 | 鞍山市量子炉材集团有限公司 | RH immersion tube of composite vacuum degasser |
| CN201737974U (en) * | 2010-06-11 | 2011-02-09 | 宝山钢铁股份有限公司 | Dip pipe steel liner of RH refining equipment |
| CN102560010A (en) * | 2012-02-23 | 2012-07-11 | 鞍山市奥鞍耐火材料有限责任公司 | Dip pipe for RH refining furnace |
| CN202885542U (en) * | 2012-04-13 | 2013-04-17 | 宜兴新威利成耐火材料有限公司 | Dip pipe for RH refining furnace |
| CN203474836U (en) * | 2013-09-05 | 2014-03-12 | 浙江自立股份有限公司 | RH refining furnace dip pipe for preventing nitrogen from being added into molten steel |
| CN204644397U (en) * | 2015-05-25 | 2015-09-16 | 丹东播磨耐火材料有限公司 | RH vacuum refining furnace fall way |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106011389A (en) * | 2016-07-14 | 2016-10-12 | 武汉钢铁股份有限公司 | Low-stress dipping pipe for RH vacuum furnace |
| CN106011389B (en) * | 2016-07-14 | 2018-01-23 | 武汉钢铁有限公司 | RH vacuum drying oven low stress dip pipes |
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Application publication date: 20151007 |