CN203479002U - Underflow type electro-magnetic induction graphite pipe launder for electro-magnetic induction slag smelting furnace - Google Patents
Underflow type electro-magnetic induction graphite pipe launder for electro-magnetic induction slag smelting furnace Download PDFInfo
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- CN203479002U CN203479002U CN201320450316.1U CN201320450316U CN203479002U CN 203479002 U CN203479002 U CN 203479002U CN 201320450316 U CN201320450316 U CN 201320450316U CN 203479002 U CN203479002 U CN 203479002U
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Abstract
The utility model relates to an underflow type electro-magnetic induction graphite pipe launder for an electro-magnetic induction slag smelting furnace. The underflow type electro-magnetic induction graphite pipe launder structurally comprises a graphite pipe launder, an electro-magnetic induction coil and a graphite sizing nozzle, wherein the graphite pipe launder is located inside the electro-magnetic induction coil, and the graphite sizing nozzle is located at the end part of the graphite pipe launder. The underflow type electro-magnetic induction graphite pipe launder has the advantages as follows: 1) compared with a rock wool process adopting a cupola furnace, energy can be saved by above 60% for each ton; 2) no secondary pollution is caused to the environment; 3) the electro-magnetic induction slag smelting furnace has high power factor, low energy consumption and high temperature rising speed; 4) the flow accuracy of a bottom-leakage slag discharge nozzle is ensured; 5) the adaptive surface of a furnace charge structure is larger, and the furnace charge composition can be adjusted randomly; 6) 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; and 7), the induction temperature of the electro-magnetic induction graphite pipe launder is controlled to be about 1,400 DEG C, and the launder has the specific function of heating the melts, so that the melts can flow continuously into a centrifugal cotton making machine just like tap water, and continuous production of the slag smelting furnace is guaranteed.
Description
Technical field
The utility model proposes a kind of electromagnetic induction slag smelting furnace underflow type electromagnetic induction graphite-pipe chute, 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 is by chute, by the easy frozen plug of chute top layer ingress of air part of heated by gas.The method of 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 (7t/h), also have 10%～20% dolomite, fluorite or other if the ore charges such as common brick head, cobble are as additive, heat to 1550 degree left and right and adjust slag compositions and guarantee that slag constant temperature provides the slag stream of constant flow rate for subordinate's operation.
The slag stream of controlled constant flow is the key that subordinate's centrifugal process is produced high-quality rock wool, with the supporting chute in the underflow type mouth of a river, because chute generally has 5m, melted gangue to cool to easily frozen plug passage of 1300 degree left and right to centrifugal glass wool making machine distance, more can not control the flow of high temperature slag stream.
Summary of the invention
The utility model proposes a kind of electromagnetic induction slag smelting furnace underflow type electromagnetic induction graphite-pipe chute, its object is intended to solve a difficult problem for high temperature slag constant temperature current control, for producing high-quality rock wool, gets through bottleneck.
Of the present utility model
technical solution: electromagnetic induction slag smelting furnace underflow type electromagnetic induction graphite-pipe chute, it is characterized in that comprising graphite-pipe chute, electromagnetic induction coil and graphite matter metering nozzle, wherein graphite-pipe chute is positioned at electromagnetic induction coil inside, and graphite matter metering nozzle is positioned at graphite-pipe chute end.
Of the present utility model
advantage: (the electromagnetic induction slag of being furnished with underflow type electromagnetic induction graphite-pipe chute is molten)
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, and the thermal efficiency is high, and waste residue amount is little, and fibroblast rate is expensive with the obvious advantage; 9) temperature sensor of electromagnetic induction graphite-pipe chute is controlled at 1400 degree left and right, the peculiar function with chute intensification melt, allow high temperature melting body image running water is the same flows to centrifugal glass wool making machine continually, be to produce continuously the electromagnetic induction graphite-pipe chute that a kind of practicality is provided.
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 a kind of structural representation of electromagnetic induction slag smelting furnace underflow type electromagnetic induction graphite-pipe chute.
In figure 1 is graphite-pipe chute, the 2nd, electromagnetic induction coil, the 3rd, graphite matter metering nozzle.
The specific embodiment
During work: treat that slag is before melting reaches the condition of emitting, to electromagnetic induction coil, 2 energising heating → electromagnetic induction coil 2 energisings are heated to certain hour, the slag fusing in graphite-pipe chute 1 pipeline → flow out from the metering nozzle 3 of graphite-pipe chute 1 end.
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.Smelting furnace adopts variable-frequency power sources, can utilize the high-temperature fusion slag of the generations such as high-temperature metal rod in smelting furnace, graphite crucible, graphite hollow, real core graphite rod.Blast furnace warm sludge is accounted for to 80%～90%, also have 10%～20% dolomite, fluorite or other are as ore charges such as common brick head, cobbles, heat to 1550 degree left and right, adjust slag composition warm sludge is done to intensification modifier treatment, afterwards by the poor person who lives in exile's slag constant temperature smelting furnace of stream, and for subordinate's operation provides the slag of steady temperature, flow-controllable, flow.
The slag stream of controlled constant flow is the key that subordinate's centrifugal process is produced high-quality rock wool, with the supporting chute in the underflow type mouth of a river, due to chute to centrifugal glass wool making machine apart from generally there being 5m, with hollow graphite matter pipe, be about 2m---5m, aperture is at 20mm-50mm, and each sizing graphite mouth can be joined in end.Wall thickness is at 25mm-40mm; additional diamond spar protective sleeve; be through in electromagnetic induction coil; be equipped with base support; the temperature sensor of electromagnetic induction graphite-pipe chute is controlled at 1400 degree left and right; allow high temperature melting body image running water is the same flows to centrifugal glass wool making machine continually, be to produce continuously the electromagnetic induction graphite-pipe chute that a kind of practicality is provided.
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 technological process of short flow process operating mine slag wool:
By blast furnace warm sludge directly or transhipment warm sludge hired car pack 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.
The utility model can make 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.Hot charging blast furnace slag smelting process is more conducive to adapt to the market demand of mineral wool and goods great development distant view thereof.
Solved the existing melted gangue of prior art and cooled to easily frozen plug passage of 1300 degree left and right, more can not control the difficulty of the flow of high temperature slag stream, enhanced productivity simultaneously.The temperature sensor of electromagnetic induction graphite-pipe chute is controlled at 1400 about degree, has the peculiar function of chute intensification melt, allows high temperature melting body image running water is the same flows to centrifugal glass wool making machine continually.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.For good basis has been established in large-scale production.Hot charging blast furnace slag smelting process is more conducive to adapt to the market demand of mineral wool and goods great development distant view thereof.
The technique of short flow process slag wool production, by blast furnace warm sludge directly or transhipment warm sludge hired car pack Melting and adjustment warm sludge smelting furnace into.Smelting furnace adopts variable-frequency power sources, can utilize the high-temperature fusion slag of the generations such as high-temperature metal rod in smelting furnace, graphite crucible, graphite hollow, real core graphite rod.Blast furnace warm sludge is accounted for to 80%～90%, also have 10%～20% dolomite, fluorite or other are as ore charges such as common brick head, cobbles, heat to 1550 degree left and right, adjust slag composition warm sludge is done to intensification modifier treatment, afterwards by the poor person who lives in exile's slag constant temperature smelting furnace of stream, and for subordinate's operation provides the slag of steady temperature, flow-controllable, flow.
The slag stream of controlled constant flow is the key that subordinate's centrifugal process is produced high-quality rock wool, with the supporting chute in the underflow type mouth of a river, due to chute to centrifugal glass wool making machine apart from generally there being 5m, with hollow graphite matter pipe, be about 2m---5m, aperture is at 20mm-50mm, and each sizing graphite mouth can be joined in end.Wall thickness is at 25mm-40mm; additional diamond spar protective sleeve; be through in electromagnetic induction coil; be equipped with base support; the temperature sensor of electromagnetic induction graphite-pipe chute is controlled at 1400 degree left and right; allow high temperature melting body image running water is the same flows to centrifugal glass wool making machine continually, be to produce continuously the electromagnetic induction graphite-pipe chute that a kind of practicality is provided.
Claims (1)
1. electromagnetic induction slag smelting furnace underflow type electromagnetic induction graphite-pipe chute, it is characterized in that comprising graphite-pipe chute, electromagnetic induction coil and graphite matter metering nozzle, wherein graphite-pipe chute is positioned at electromagnetic induction coil inside, and graphite matter metering nozzle is positioned at graphite-pipe chute end.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201320450316.1U CN203479002U (en) | 2013-07-26 | 2013-07-26 | Underflow type electro-magnetic induction graphite pipe launder for electro-magnetic induction slag smelting furnace |
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| CN201320450316.1U CN203479002U (en) | 2013-07-26 | 2013-07-26 | Underflow type electro-magnetic induction graphite pipe launder for electro-magnetic induction slag smelting furnace |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI585210B (en) * | 2014-12-16 | 2017-06-01 | 西格里碳素歐洲股份有限公司 | Method to reduce molten feedstock and device to conduct this method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI585210B (en) * | 2014-12-16 | 2017-06-01 | 西格里碳素歐洲股份有限公司 | Method to reduce molten feedstock and device to conduct this method |
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