CN203479012U - Underflow type coaxial electric heating core graphite nozzle device for electro-magnetic induction slag smelting furnace - Google Patents
Underflow type coaxial electric heating core graphite nozzle device for electro-magnetic induction slag smelting furnace Download PDFInfo
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- CN203479012U CN203479012U CN201320449831.8U CN201320449831U CN203479012U CN 203479012 U CN203479012 U CN 203479012U CN 201320449831 U CN201320449831 U CN 201320449831U CN 203479012 U CN203479012 U CN 203479012U
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Abstract
The utility model relates to an underflow type coaxial electric heating core graphite nozzle device for an electro-magnetic induction slag smelting furnace. The underflow type coaxial electric heating core graphite nozzle device structurally comprises a graphite mandrel locating plate, a graphite sleeve, a graphite mandrel, a sizing water outlet, insulating castable fixing studs, a fixing flange, mandrel electrode plate fixing studs, fixing nuts, a mandrel electrode plate, an insulating castable flange, a sleeve electrode plate and water inlets. The underflow type coaxial electric heating core graphite nozzle device has the advantages as follows: 1) compared with a rock wool process adopting a cupola furnace, energy can be saved by more than 60% for each ton; 2) no secondary pollution is caused to the environment; 3) the flow accuracy of a bottom-leakage slag discharge nozzle is ensured, the bottom-leakage slag discharge nozzle can be opened or closed randomly, and melts are not wasted; 4) the adaptive surface of a furnace charge structure is larger, and the furnace charge composition can be adjusted randomly; 5) 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, coke is not required, and pollution of impurities such as furnace ash and the like is absent; 6) the compositions of the melts are uniform through magnetic stirring and mechanical stirring; and 7), the energy consumption is low, the heat efficiency is high, the waste residue amount is small, the fiber forming rate is high, and the cost advantage is remarkable.
Description
Technical field
The utility model relates to the coaxial heating core graphite of a kind of electromagnetic induction slag smelting furnace underflow type spout device, 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 SiO2, Al2O3, CaO, MgO, MnO, FeO, S etc.In addition, some slag also contains micro-TiO2, V2O5, Na2O, BaO, P2O5, Cr2O3 etc.CaO in blast-furnace cinder, SiO2, Al2O3 accounts 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.
Conventionally the technological process of blowing process operating mine slag wool as shown in Figure 1.
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 will coagulate pasty state, mobility extreme difference cooling to 1300 about degree.
Summary of the invention
The utility model proposes the coaxial heating core graphite of a kind of electromagnetic induction slag smelting furnace underflow type spout device, 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.
Of the present utility model
technical solution: the coaxial heating core graphite of electromagnetic induction slag smelting furnace underflow type spout device, is characterized in that comprising graphite matter mandrel location-plate, graphite matter sleeve, graphite matter mandrel, sizing delivery port, insulating casting material fixed bolt, mounting flange, mandrel battery lead plate fixed bolt, hold-down nut, mandrel battery lead plate, insulating casting material flange, sleeve electrode plate, water inlet; Wherein graphite matter sleeve is fixed on furnace bottom and is lining with; Four water inlets are arranged at the top of graphite matter sleeve, and a sizing delivery port is arranged at bottom; Graphite matter mandrel location-plate is connected with graphite matter sleeve by screw thread, locate by the locating hole in the middle of graphite matter mandrel location-plate the end of graphite matter mandrel, graphite matter mandrel thread is connected on mandrel battery lead plate, mandrel battery lead plate is fixed on insulating casting material flange bottom by mandrel battery lead plate fixed bolt and hold-down nut, and insulating casting material flange is fixed on stove bottom by insulating casting material fixed bolt and hold-down nut; Sleeve electrode plate is connected with graphite matter bush whorl, and sleeve electrode plate and graphite matter sleeve are positioned at insulating casting material flange top;
During work: foreign current is connected mandrel battery lead plate, form electric loop with graphite matter mandrel, graphite matter mandrel location-plate, graphite matter sleeve, sleeve electrode plate, make the whole heating of graphite matter mandrel, the slag charge of four water inlets on graphite matter sleeve inner and top is fused into liquid state, and this liquid slag flows out from the sizing delivery port of bottom.
Of the present utility model
advantage: (the electromagnetic induction slag smelting furnace of being furnished with the coaxial heating core graphite of underflow type spout device)
1) compare with furnace cupola rock wool technique, 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, the thermal efficiency is high, waste residue amount is little, fibroblast rate is expensive with the obvious advantage.
Accompanying drawing explanation
Fig. 1 is the process chart of common blowing process operating mine slag wool.
Fig. 2 is the process chart of short flow process operating mine slag wool.
Fig. 3 is the structural representation of the coaxial heating core graphite of a kind of electromagnetic induction slag smelting furnace underflow type spout device.
In figure 1 is graphite matter mandrel location-plate, the 2nd, graphite matter sleeve, the 3rd, graphite matter mandrel, the 4th, sizing delivery port, the 5th, insulating casting material fixed bolt, the 6th, mounting flange, the 7th, mandrel battery lead plate fixed bolt, the 8th, hold-down nut, the 9th, mandrel battery lead plate, the 10th, insulating casting material flange, the 11st, sleeve electrode plate, the 12nd, water inlet.
The specific embodiment
Contrast accompanying drawing 3, the coaxial heating core graphite of electromagnetic induction slag smelting furnace underflow type spout device, its structure comprises a graphite matter mandrel location-plate 1, graphite matter sleeve 2, graphite matter mandrel 3, sizing delivery port 4, four insulating casting material fixed bolts 5, mounting flange 6, four 7,12 hold-down nuts of mandrel battery lead plate fixed bolt 8, mandrel battery lead plate 9, insulating casting material flange 10, sleeve electrode plate 11 and four water inlets 12; Wherein graphite matter sleeve 2 is fixed on furnace bottom lining, and four water inlets 12 are arranged at its top, and a sizing delivery port 4 is arranged at bottom.Graphite matter mandrel location-plate 1 is connected with graphite matter sleeve 2 by screw thread, locate by the locating hole in the middle of graphite matter mandrel location-plate 1 graphite matter mandrel 3 ends, graphite matter mandrel 3 is threaded on mandrel battery lead plate 9, mandrel battery lead plate 9 is by mandrel battery lead plate fixed bolt 7 and hold-down nut 8, be fixed on insulating casting material flange 10 bottoms, insulating casting material flange 10, by insulating casting material fixed bolt 5 and hold-down nut 8, is fixed on stove bottom.Sleeve electrode plate 11 is threaded with graphite matter sleeve 2, is positioned at insulating casting material flange 10 tops.
The course of work: foreign current → mandrel battery lead plate 9 → graphite matter mandrel 3 → graphite matter mandrel location-plate 1 → graphite matter sleeve 2 → sleeve electrode plate 11 → form electric loop, makes the slag charge at four water inlet 12 places on whole heating → graphite matter sleeve 2 inside of graphite matter mandrel 3 and top be fused into liquid state → liquid slag finally from sizing delivery port 4 outflows of bottom.
This spout device has that high-temperature liquid state slag flow is controlled, the electrical heating coaxial core bar type mouth of a river, and temperature is adjustable (1300-1600 degree), smooth without stifled, safe and reliable, long service life, efficiently feature.
The coaxial heating core graphite of electromagnetic induction slag smelting furnace underflow type spout device, length (500mm-1000mm), inner core rod diameter 30mm, makes by graphite material, by Power Regulation power utilization graphite heating-up temperature, can control.
This device includes the electric heating inner core rod that a graphite material forms, and inner core rod outside is by the graphite outer tube parcel internal diameter 60mm of heat insulation function.The electric heating inner core rod of graphite material is connected with Power Regulation power supply.Graphite outer tube side has that stream slag is empty, upper end with have screw thread graphite inner core rod to lead to be connected, the flow that slag stream can be controlled in the different sizing graphite mouth of a river is inlayed in bottom, upper end, the coaxial heating core graphite mouth of a river is arranged in holding furnace furnace bottom, holding furnace bottom is stretched out in lower end, the coaxial heating core graphite mouth of a river, external power supply, can Power Regulation temperature adjustment.Graphite material forms coaxial heating core graphite spout device,
Inner core rod resistivity high-temperature is high, at the bottom of urceolus resistivity, at the bottom of temperature, can effectively improve the life cycle of the insulation diamond spar material of urceolus.
The controlled coaxial heating core graphite spout device of a set of underflow type flow is equipped with in a slag holding furnace bottom, produces the process requirements of rock wool in order to meet short flow process.
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.
As shown in Figure 2, 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.(having two kinds of cotton method blowing processes of system and centrifugal process).
The composition of blast furnace warm sludge 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 SiO2, Al2O3, CaO, MgO, MnO, Fe2O3, S.Some special slags are also analyzed TiO2, V2O5, P2O5, Na2O, BaO, Cr2O3, Ni2O3 etc.In all these chemical compositions, CaO, SiO2, Al2O3, tetra-kinds of compositions of MgO are main, and they account for 95% of gross weight.SiO2 and Al2O3 are from the gangue in ore and the ash content in coke, and 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.
This device has solved 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.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.
Claims (3)
1. the coaxial heating core graphite of electromagnetic induction slag smelting furnace underflow type spout device, is characterized in that comprising graphite matter mandrel location-plate, graphite matter sleeve, graphite matter mandrel, sizing delivery port, insulating casting material fixed bolt, mounting flange, mandrel battery lead plate fixed bolt, hold-down nut, mandrel battery lead plate, insulating casting material flange, sleeve electrode plate, water inlet; Wherein graphite matter sleeve is fixed on furnace bottom and is lining with; Four water inlets are arranged at the top of graphite matter sleeve, and a sizing delivery port is arranged at bottom; Graphite matter mandrel location-plate is connected with graphite matter sleeve by screw thread, locate by the locating hole in the middle of graphite matter mandrel location-plate the end of graphite matter mandrel, graphite matter mandrel thread is connected on mandrel battery lead plate, mandrel battery lead plate is fixed on insulating casting material flange bottom by mandrel battery lead plate fixed bolt and hold-down nut, and insulating casting material flange is fixed on stove bottom by insulating casting material fixed bolt and hold-down nut; Sleeve electrode plate is connected with graphite matter bush whorl, and sleeve electrode plate and graphite matter sleeve are positioned at insulating casting material flange top.
2. the coaxial heating core graphite of electromagnetic induction slag smelting furnace underflow type according to claim 1 spout device, graphite matter mandrel outside described in it is characterized in that is wrapped up by graphite matter sleeve, its internal diameter 60mm, graphite matter sleeve upper end is connected with graphite matter mandrel, graphite matter sleeve is inlayed the different sizing graphite mouth of a river, controls the flow of slag stream.
3. the coaxial heating core graphite of electromagnetic induction slag smelting furnace underflow type according to claim 1 spout device, it is characterized in that upper end, the coaxial heating core graphite mouth of a river is arranged in holding furnace furnace bottom, holding furnace bottom is stretched out in lower end, the coaxial heating core graphite mouth of a river, and external power supply, can Power Regulation temperature adjustment.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201320449831.8U CN203479012U (en) | 2013-07-26 | 2013-07-26 | Underflow type coaxial electric heating core graphite nozzle device for electro-magnetic induction slag smelting furnace |
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| CN201320449831.8U CN203479012U (en) | 2013-07-26 | 2013-07-26 | Underflow type coaxial electric heating core graphite nozzle device for electro-magnetic induction slag smelting furnace |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103353234A (en) * | 2013-07-26 | 2013-10-16 | 朱兴发 | Bottom flowing type coaxial electric heating core graphite water gap device of electromagnetic induction slag smelting furnace |
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- 2013-07-26 CN CN201320449831.8U patent/CN203479012U/en not_active Withdrawn - After Issue
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103353234A (en) * | 2013-07-26 | 2013-10-16 | 朱兴发 | Bottom flowing type coaxial electric heating core graphite water gap device of electromagnetic induction slag smelting furnace |
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