CN203478998U - Underflow type anti-swirl central stopper rod nozzle for electro-magnetic induction slag smelting furnace - Google Patents
Underflow type anti-swirl central stopper rod nozzle for electro-magnetic induction slag smelting furnace Download PDFInfo
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- CN203478998U CN203478998U CN201320450068.0U CN201320450068U CN203478998U CN 203478998 U CN203478998 U CN 203478998U CN 201320450068 U CN201320450068 U CN 201320450068U CN 203478998 U CN203478998 U CN 203478998U
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- slag
- furnace
- nozzle
- mouth
- smelting furnace
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Abstract
The utility model discloses an underflow type anti-swirl central stopper rod nozzle for an electro-magnetic induction slag smelting furnace. According to the structure of the underflow type anti-swirl central stopper rod nozzle, bottom bricks and a bottom furnace lining of the smelting furnace are fixed together; a nozzle inner bushing faces downwards and is arranged in a nozzle outer bushing, the nozzle outer bushing faces upwards, and the nozzle outer bushing and the nozzle inner bushing are jointly placed in the bottom bricks; fixing plates support the nozzle outer bushing and are fixed on a furnace bottom steel plate; and an upper tapered round surface of the nozzle inner lining is covered by a spherical surface of the end part of a stopper rod from the top down. The underflow type anti-swirl central stopper rod nozzle has the advantages as follows: compared with a rock cotton process adopting a cupola furnace, the electro-magnetic induction slag smelting furnace equipped with the stopper rod nozzle can save more than 60% of energy for each ton; no environmental pollution is caused; the slag smelting furnace has high power factor, low energy consumption and high temperature rising speed; the flow of a bottom-leakage slag discharge nozzle is accurate, and melts are not wasted; the adaptive surface is large, and the furnace charge composition can be adjusted randomly; the upper temperature limit of a slag bath can reach 1,700 DEG C, so that requirements of melts with various qualities can be met, and coke is not required; compositions of the melts are uniform through magnetic stirring and mechanical stirring; the waste residue amount is small; and the smelting furnace has excellent temperature rising, thermoregulation, thermal insulation and hardening and tempering performance and large loading capacity.
Description
Technical field
The utility model proposes the stopper mouth of a river, the anti-whirlpool of a kind of electromagnetic induction slag smelting furnace underflow type center, belong to slag melting equipment technology field.
Background technology
The process energy consumption of blast furnace ironmaking accounts for 60% of steel and iron industry total energy consumption, is the energy consumption rich and influential family of steel and iron industry, and its energy-saving and emission-reduction have a high potential.Blast furnace slag is a kind of solid waste that blast furnace ironmaking gives off, and not only consumes a large amount of energy in its processing procedure, also discharges a large amount of harmful substances simultaneously.Therefore, the research of carrying out blast furnace slag recycling aspect is very necessary, a kind of industrial solid wastes of blast furnace slag.The slag of discharging in blast furnace ironmaking process, claims again blast-furnace cinder, can be divided into conversion pig slag, foundry iron slag, ferromanganese ore slag etc.The states such as China and the Soviet Union are used titanomagnetite ironmaking in some areas, discharge vanadium titanium blast furnace slag.Different according to the grade of ore, 1 ton of iron of every refining is discharged 0.3～1 ton of slag, and the grade of ore is lower, and bed drain purge is larger.China approximately discharges more than 2,000 ten thousand tons at present every year.Slag is thrown meeting land occupation aside, waste resource, contaminated environment.Within 1589, Germany start to utilize blast furnace slag.After mid-term in 20th century, blast furnace slag comprehensive utilization develops rapidly.Many countries such as the current U.S., Britain, Canada, France, the Federal Republic of Germany, Sweden, Belgium have all accomplished deslagging then, are finished then, have all realized resource.The Japan utilization rate Wei85%， Soviet Union in 1980 utilization rate in 1979 is more than 70%, and China's utilization rate in 1981 is 83%.
Blast furnace slag is the refuse of discharging from blast furnace while smelting the pig iron, when furnace temperature reaches 1400-1600 ℃, furnace charge melting, the gangue in ore, the ash content in coke and cosolvent and other can not enter impurity in the pig iron and form and take silicate and aluminate and float over the slag above molten iron as main.In blast-furnace cinder, main chemical composition is SiO
2, Al
2o
3, CaO, MgO, MnO, FeO, S etc.In addition, some slag also contains micro-TiO
2, V
2o
5, Na
2o, BaO, P
2o
5, Cr
2o
3deng.CaO in blast-furnace cinder, SiO
2, Al
2o
3account for the more than 90% of weight.
The slag stream that mineral wool is jetted very thin with compressed air or high steam, can produce mineral wool, mineral wool can be used as insulation material, sound-absorbing material and fire proofing material etc., and the finished product of being processed by its has warming plate, insulation quilt, heat-preservation cylinder, insulation belt, abatvoix, narrow felt rug, sound-absorbing band, refractory slab and heat resistance fiber etc.Mineral wool is widely used in the departments such as metallurgy, machinery, building, chemical industry and traffic.
Direct winding-up blast furnace cinder, technique is simple, invest less, but slag wool difficult quality guarantee.Take slag as primary raw material, add silica, basalt, andesite, sometimes also can add the adjustment compositions such as lime, then blowing after fusing, high-quality mineral wool can be obtained.Many countries are all at operating mine slag wool.In addition, blast furnace slag also can be used as the raw material of cast stone, devitrified glass, fertilizer, enamel, pottery etc.
The method of operating mine slag wool has two kinds of blowing process and centrifugal process.Raw material flows out after melt in furnace, with steam or compressed air spraying, becomes the method for mineral wool to be called blowing process.Raw material drops on rotating disk after melt in furnace, and the method for making mineral wool with centrifugal force is called centrifugal process.
The primary raw material of mineral wool is blast-furnace cinder, accounts for 80%～90%, also has 10%～20% dolomite, fluorite or other as common brick head, cobble etc., and the fuel of operating mine slag wool is coke.Produce a minute batching, fusing winding-up, pack 3 operations.Mineral wool melting equipment is comprised of smelting furnace (furnace cupola or combustion gas tank furnace etc.), feeder, four roller centrifuges etc. conventionally.
Conventionally the technique of operating mine slag wool is dry slag to be melt into its method of liquid slag as follows:
1) pulverized fuel and raw material are burnt in helical form turbulent gases, generate silicate melt, and then silicate melt is configured as to mineral wool fiber.Raw meal ash or slag are spurted into burning gases highest temperature zone.Raw material proportioning is: every 100 parts of fine coal, and 50-300 parts of mineral wool raw materials, mineral wool raw materials has also been added 3-9% fine-powdered acidity in addition.
2) coke smelting furnace (furnace cupola).
3) combustion gas tank furnace, tank furnace refractory material laying, is entered right gas blowout in pond, to melt slag charge by spray gun.
4) metal electrode arc-melting slag charge (small-sized).
The blast furnace warm sludge that accounts for 80%～90% is directly filled to people's electromagnetic induction slag smelting furnace (15t-20t slag), also have 10%～20% dolomite, fluorite or other are if the ore charges such as common brick head, cobble are as additive, heating to 1550 degree left and right adjusts slag composition and in skull melting furnace, guarantees melt constant temperature, for subordinate's operation provides the slag of high-temperature liquid state flow-controllable, flowing, is the key technology of producing high-quality mineral wool.
The slag stream of controlled constant flow is the key that subordinate's blowing process and centrifugal process are produced high-quality mineral wool, and holding furnace bottom is thicker, has the factors such as a long section mouth of a river temperature is lower, and melted gangue meeting blocking channel, more can not control the flow that high temperature slag flows.
High-temperature slag is solidifying pasty state, its mobility extreme difference cooling to 1300 about degree.
Summary of the invention
The utility model proposes the stopper mouth of a river, the anti-whirlpool of a kind of electromagnetic induction slag smelting furnace underflow type center, its object is intended to solve a difficult problem for high temperature slag constant temperature flow-control, for producing high-quality mineral wool, gets through bottleneck.It is solidifying stifled that stream is opened in the flow-control of high-temperature liquid state slag, quantifies smoothly melt cinder.Meet the technology requirement that rock wool produces.
Technical solution of the present utility model: the stopper mouth of a river, the anti-whirlpool of a kind of electromagnetic induction slag smelting furnace underflow type center, its structure is to comprise stopper rod, mouth of a river neck bush, mouth of a river external bushing, bottom brick, fixed head, set bolt; Wherein at the bottom of bottom brick and smelting furnace, furnace lining is fixed together, and mouth of a river neck bush is downward, is placed in the external bushing of the mouth of a river, mouth of a river external bushing upwards, together with the neck bush of the mouth of a river, is inserted in bottom brick, fixed head is held mouth of a river external bushing, and fixed head, by set bolt, is fixed on steel plate of furnace hearth.The sphere of stopper rod end, the upper epicone disc that covers mouth of a river neck bush downwards, realizes linear sealing.
Advantage of the present utility model: (the electromagnetic induction slag smelting furnace of being furnished with the stopper mouth of a river, the anti-whirlpool of underflow type center)
1) compare with the rock wool technique of furnace cupola, the energy consumption of saving per ton is more than 60%.
2) belong to pure cleaner production, environment is not had to secondary pollution.
3) electromagnetic induction blast furnace slag smelting furnace power factor is high, and energy consumption is low, and programming rate is fast.
4) end, spills the peculiar design of pulp water mouth, guarantees that flow is accurate, and arbitrarily switch, does not waste melt.
5) burden structure adaptive surface is larger, and charge composition can regulate arbitrarily.
6) slag bath temperature upper limit reaches requirement that 1700 degree can adapt to various quality melts without coke, without entering the ashes contaminating impurity that grades.
7) magnetic agitation adds mechanical agitation and guarantees that bath composition is even.
8) energy consumption is low, and the thermal efficiency is high, and waste residue amount is little, and fibroblast rate is expensive with the obvious advantage.
9) not only intensification of smelting furnace, temperature adjustment, insulation, modified superior performance, and struck capacity is large, for good basis has been established in large-scale production.
10) solved the flow-control of the existing high temperature slag of prior art constant temperature, the solidifying stifled difficult problem of stream is opened in the flow-control of high-temperature liquid state slag, quantifies smoothly melt cinder.For producing high-quality mineral wool, get through bottleneck.Meet the technology requirement that rock wool produces.The end, spills the peculiar design of pulp water mouth, guarantees that flow is accurate, and arbitrarily switch, does not waste melt.
Accompanying drawing explanation
Accompanying drawing 1 is the structural representation at the stopper mouth of a river, the anti-whirlpool of a kind of electromagnetic induction slag smelting furnace underflow type center.
Accompanying drawing 2 is process charts of short flow process operating mine slag wool.
In accompanying drawing 11 is stopper rod, the 2nd, mouth of a river neck bush, the 3rd, mouth of a river external bushing, the 4th, bottom brick, the 5th, fixed head, the 6th, set bolt.
The specific embodiment
Contrast accompanying drawing 1, the stopper mouth of a river, the anti-whirlpool of a kind of electromagnetic induction slag smelting furnace underflow type center, its structure is to comprise 2,1 mouth of a river external bushing 3 of 1,1 mouth of a river neck bush of 1 stopper rod, bottom brick 4, fixed head 5, set bolt 6.Wherein bottom brick 4 is fixed together with furnace lining at the bottom of smelting furnace, and mouth of a river neck bush 2 is downward, is placed in mouth of a river external bushing 3, mouth of a river external bushing 3 upwards, together with mouth of a river neck bush 2, is inserted in bottom brick 4, fixed head 5 is held mouth of a river external bushing 3, and fixed head 5, by set bolt 6, is fixed on steel plate of furnace hearth.The sphere of stopper rod 1 end, covers the epicone disc of mouth of a river neck bush 2 from the top down, realizes linear sealing.
The course of work of the present invention: reach mention → slag of slagging requirement → stopper rod 1 liquid from the gap of stopper rod 1 and mouth of a river neck bush 2, without eddy-currents water inlet neck bush 2 inner tubes → finally, slag liquid flows into mouth of a river neck bush 2.
Contrast accompanying drawing 2, the technological process of short flow process operating mine slag wool:
Melting and adjustment warm sludge smelting furnace, by fortune stove dolly, electromagnetic induction body of heater (3t---60t), variable-frequency power sources (1000---20000kw), the compositions such as the induction electrode of the bell of liftable, rotation, liftable, rotation, calculating meter, plc control system.The technique of short flow process slag wool production is that blast furnace warm sludge is direct or transhipment warm sludge hired car packs Melting and adjustment warm sludge smelting furnace into, (it is remarkable that warm sludge packs energy-saving effect into), blast furnace warm sludge approximately 1500 degree left and right, after packing Melting and adjustment warm sludge smelting furnace into, can cool to about 1200 degree left and right, electromagnetic induction by Melting and adjustment warm sludge smelting furnace is warmed up to about 1500 degree left and right, in 80%～90% blast furnace warm sludge, adding 10%～20% quartz etc. carries out being modifiedly warmed up to about 1500 degree left and right (object that adds quartz being the grade of modified raising slag wool again, blast furnace slag wool is become to the mineral wool that quality is high, ).
The modified melted gangue that is warmed up to about 1500 degree left and right, by chute, pack hot slag stream into slag constant temperature holding furnace, slag constant temperature holding furnace has the melt cinder stem bar of two controllable flow rates, and the slag that warm sludge stem bar flows out flows to down to be made together cotton equipment and make mineral wool.The composition of blast furnace slag comprises chemical composition and mineral composition.
In chemical composition blast furnace slag, conventionally contain 15 kinds of above chemical compositions.The project of blast furnace slag complete analysis is SiO
2, Al
2o
3, CaO, MgO, MnO, Fe
2o
3, S.Some special slags are also analyzed TiO
2, V
2o, P
2o
5, Na
2o, BaO, Cr
2o
3, Ni
2o
3deng.In all these chemical compositions, CaO, SiO
2, Al
2o
3, tetra-kinds of compositions of MgO are main, they account for 95% of gross weight.SiO
2and Al
2o
3from the gangue in ore and the ash content in coke, CaO and MgO are mainly from flux, and blast furnace slag is exactly mainly silicate and the aluminate being comprised of these four kinds of oxides.
Solved the flow-control of the existing high temperature slag of prior art constant temperature, the solidifying stifled difficult problem of stream is opened in the flow-control of high-temperature liquid state slag, quantifies smoothly melt cinder.For producing high-quality mineral wool, get through bottleneck.Meet the technology requirement that rock wool produces.The end, spills the peculiar design of pulp water mouth, guarantees that flow is accurate, and arbitrarily switch, does not waste melt.Energy consumption is low, and the thermal efficiency is high, and waste residue amount is little, and fibroblast rate is expensive with the obvious advantage.Not only intensification of smelting furnace, temperature adjustment, insulation, modified superior performance, and struck capacity is large, for good basis has been established in large-scale production.More be conducive to adapt to the market demand of mineral wool and goods great development distant view thereof.
Meet the technology requirement that rock wool produces.
Have that high-temperature liquid state slag flow is controlled, temperature is adjustable (1200-1600 degree), smooth without stifled, safe and reliable, long service life, efficiently feature.
The electric heating graphite spout device that high-temperature liquid state slag flow is controlled, length (500mm-1000mm), interior bore (10mm-50mm), makes by graphite material, by the Power Regulation power utilization graphite heating graphite mouth of a river, temperature control.
The controlled electrical heating type long nozzle device of a set of liquid slag flow is equipped with in a slag holding furnace bottom, produces the process requirements of rock wool in order to meet short flow process.
Claims (1)
1. a stopper mouth of a river, the anti-whirlpool of electromagnetic induction slag smelting furnace underflow type center, is characterized in that comprising stopper rod, mouth of a river neck bush, mouth of a river external bushing, bottom brick, fixed head, set bolt; Wherein at the bottom of bottom brick and smelting furnace, furnace lining is fixed together, mouth of a river neck bush downwards and be placed in the external bushing of the mouth of a river, mouth of a river external bushing makes progress and inserts in bottom brick together with the neck bush of the mouth of a river, and fixed head is held mouth of a river external bushing, and fixed head is fixed on steel plate of furnace hearth by set bolt; The sphere of stopper rod end covers the epicone disc of mouth of a river neck bush from the top down.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320450068.0U CN203478998U (en) | 2013-07-26 | 2013-07-26 | Underflow type anti-swirl central stopper rod nozzle for electro-magnetic induction slag smelting furnace |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320450068.0U CN203478998U (en) | 2013-07-26 | 2013-07-26 | Underflow type anti-swirl central stopper rod nozzle for electro-magnetic induction slag smelting furnace |
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| Publication Number | Publication Date |
|---|---|
| CN203478998U true CN203478998U (en) | 2014-03-12 |
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|---|---|---|---|
| CN201320450068.0U Expired - Lifetime CN203478998U (en) | 2013-07-26 | 2013-07-26 | Underflow type anti-swirl central stopper rod nozzle for electro-magnetic induction slag smelting furnace |
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| CN (1) | CN203478998U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104567428A (en) * | 2014-12-30 | 2015-04-29 | 朱兴发 | Flow-controllable orifice with three uniformly distributed holes for high-temperature liquid slag |
| CN106123588A (en) * | 2016-06-27 | 2016-11-16 | 中国原子能科学研究院 | A kind of high-temperature fusant device for discharging for cold crucible |
-
2013
- 2013-07-26 CN CN201320450068.0U patent/CN203478998U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104567428A (en) * | 2014-12-30 | 2015-04-29 | 朱兴发 | Flow-controllable orifice with three uniformly distributed holes for high-temperature liquid slag |
| CN106123588A (en) * | 2016-06-27 | 2016-11-16 | 中国原子能科学研究院 | A kind of high-temperature fusant device for discharging for cold crucible |
| CN106123588B (en) * | 2016-06-27 | 2019-04-19 | 中国原子能科学研究院 | A kind of high-temperature fusant device for discharging for cold crucible |
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Granted publication date: 20140312 |