CN203360529U - Large-size closed high titanium slag smelting dedicated electric furnace with raw material preheating device - Google Patents
Large-size closed high titanium slag smelting dedicated electric furnace with raw material preheating device Download PDFInfo
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- CN203360529U CN203360529U CN 201320379752 CN201320379752U CN203360529U CN 203360529 U CN203360529 U CN 203360529U CN 201320379752 CN201320379752 CN 201320379752 CN 201320379752 U CN201320379752 U CN 201320379752U CN 203360529 U CN203360529 U CN 203360529U
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Abstract
The utility model relates to a large-size closed high titanium slag smelting dedicated electric furnace with a raw material preheating device. In the prior art, the closed high titanium slag smelting electric furnace has the problems of small capacity, low yield, high energy consumption, low automation degree and serious environment pollution. The electric furnace comprises a loading system large dip angle belt conveyer, a furnace top receiving hopper, furnace top weighing bins, an upper section preheating chamber, a lower section heating chamber, a thermal insulation stock bin and a hollow electrode feeding unit, wherein the furnace top weighing bins are communicated with a material distribution bin and a tube nest both in the upper section preheating chamber; an emptying valve communicated with the lower section heating chamber is arranged at the lower end of the upper section preheating chamber; the lower section heating chamber is communicated with the thermal insulation stock bin; the cavity, outside the tube nest, of the upper section preheating chamber is communicated with the lower section heating chamber. Therefore, with adoption of the large-size closed high titanium slag smelting dedicated electric furnace with the raw material preheating device, the raw material can be heated twice to achieve the temperature required by furnace smelting, the smelting electric consumption is reduced, and the pollution is reduced.
Description
Technical field
The utility model relates to a kind of large-scale closed titanium slag of carrying raw material primary heater unit and smelts special-purpose electric furnace.
Background technology
Titanium slag is to be smelted and formed by ilmenite concentrate.Titanium slag is that the titanium ore enriched substance formed through the physics production process is commonly called as, and by heating by electric cooker, melts titanium ore, makes the enriched substance of the titanium dioxide titanium dioxide high-content that fusing obtains after separating with iron in titanium ore.Titanium slag is neither waste residue, neither by product, but produce the high quality raw material of titanium dioxide, titanium sponge and artificial rutile product.Titanium slag product ∑ TiO
2be greater than 90% and be commonly called as titanium slag, all the other are called titanium slag.At present by concentrated ilmenite through pre-treatment produce rich titanium material the most effective, most economical rationally, to the method for environmental disruption minimum, be electrosmelting titanium slag method.
China is since the research of smelting titanium slag at the end of the fifties, and adopting at that time furnace volume is 400kVA open type electric furnace, to the history of existing nearly 50 years of today.Up to now, the whole nation has more than 40 of titanium slag electric furnace, is to have in the world the country that the titanium slag electric furnace number of units is maximum.The electric furnace that wherein capacity is less than 7000kVA accounts for absolute majority, is all to be reconstructed by semi closed (low hood) formula ferroalloy furnace.Main products is ∑ TiO
2be greater than 90% titanium slag.These electric furnace ubiquity capacity are little, yield poorly, energy consumption is high, level of automation is low, environmental pollution is serious.
The utility model content
The technical problem that the utility model solves is to provide that a kind of capacity is large, output is high, energy consumption is low, level of automation is high, the large-scale closed titanium slag of the carrying raw material primary heater unit of environmental protection is smelted special-purpose electric furnace.
For solving above-mentioned technical problem, the utility model is taked following technical scheme:
A kind of large-scale closed titanium slag of carrying raw material primary heater unit is smelted special-purpose electric furnace, and described electric furnace comprises electrode unit, bell, furnace shell, furnace lining, slagging and puts the iron mouth; Described furnace shell, furnace lining and bell form an airtight burner hearth, at burner hearth sidewall, slagging is set and puts the iron mouth; Special being: described electric furnace comprises feeding system inclination angle belt conveyor, furnace roof hopper, furnace roof weighing storehouse, epimere preheating chamber and hypomere heating chamber, insulation feed bin, hollow electrode dosage unit; Described feeding system inclination angle belt conveyor one end is fixed on ground, and the other end is fixed on the furnace roof plane, and the furnace roof hopper is set on the furnace roof plane; Under the furnace roof hopper, outlet arranges screw feeder; Screw feeder and furnace roof weighing storehouse 8～12 independently the weighing storehouse be communicated with, each independently is communicated with minute feed bin and tubulation in the epimere preheating chamber in the weighing storehouse, lower end at the epimere preheating chamber arranges the baiting valve be communicated with the hypomere heating chamber, and the hypomere heating chamber is communicated with the insulation feed bin.
In above-mentioned epimere preheating chamber, the outer cavity of tubulation is communicated with the hypomere heating chamber.
Above-mentioned hollow electrode dosage unit comprises that travelling car, material feeding elephant trunk, weighing device, the tightness system that is flexible coupling form; The hollow electrode dosage unit directly is connected with electrode unit.
Above-mentioned electrode unit adopts reversely hung Yong conductive cross arm Graphite Electrodes unit, comprises that fixed frame, lifting column, guide deflection sheave, hoist cylinder, conductive cross arm, electrode holder press laying mechanism, Graphite Electrodes; Graphite Electrodes electrode circle diameter Ф 1300 ~ Ф 3000mm, Graphite Electrodes diameter Ф 450 ~ Ф 700mm.
Above-mentioned bell adopts the taper type water cooled cover, at the bell outside surface, explosion trap, observation door, pressure tap, blanking hole, electrode is set by hole, at the bell internal surface, refractory materials is set.
Advantage of the present utility model is as follows:
The utility model adopts carrying raw material primary heater unit and large-scale feeding system etc., thereby possesses that capacity is large, output is high, energy consumption is low, level of automation is high, the advantage of environmental protection.
the accompanying drawing explanation:
Fig. 1 is structural representation of the present utility model.
specific embodiment:
Referring to Fig. 1, the large-scale closed titanium slag that the utility model is a kind of carrying raw material primary heater unit is smelted special-purpose electric furnace, comprise feeding system inclination angle belt conveyor 1, furnace roof hopper 2, furnace roof weighing storehouse 3, epimere preheating chamber 4 and hypomere heating chamber 5, the insulation feed bin 6, hollow electrode dosage unit 7, electrode unit 8, bell 9, furnace shell 10, furnace lining 11, slagging and put iron mouth 12, slag iron mouth is driven the machine of blocking up 13; Described furnace shell 10, furnace lining 11 and bell 9 form an airtight burner hearth, at burner hearth sidewall, slagging is set and puts iron mouth 12.
Feeding system inclination angle belt conveyor 1 one ends are fixed on ground, and the other end is fixed on furnace roof+51m plane, furnace roof hopper 2 is embedded be arranged on+51m plane.The ilmenite concentrate raw material is deposited in the former material shed on ground, adopts feeding system inclination angle belt conveyor 1 raw material to be transported to the furnace roof hopper 2 on electric furnace power house+51m plane.
Furnace roof hopper 2 times outlet is designed with a set of screw feeder that can 360 ° of rotations, and be arranged on+47m of this material feeder plane, drive rotation by motor reducer.Furnace roof weighing storehouse 3 by 8～12 independently feed bin form, screw feeder is responsible for according to time variable control, being transported to respectively in 8～12 weighing storehouses temporary by the raw material in furnace roof hopper 2.Each weighing storehouse lower discharge port respectively is designed with 1 screw feeder, by bolt, with flange, with weighing storehouse 3 end openings, is connected.Raw material in each weighing storehouse is transported to minute feed bin in epimere preheating chamber 4 by the screw feeder of its lower outlet, and the discharge quantity in each weighing storehouse is by LOAD CELLS accurate-metering separately.
Two-part raw material preheating unit comprises epimere preheating chamber 4, design+34.5m and+the 43.5m plane between; Hypomere heating chamber 5, design+26.0m and+the 34.5m plane between; Insulation feed bin 6, design is on+20.0m plane.Within the epimere preheating chamber divides raw material in the feed bin tubulation in entering respectively epimere preheating chamber 4 by deadweight, in tubulation, tentatively heat.The flue gas that heat source is drawn out of from hypomere heating chamber 5, flue gas enter after preheating chamber with tubulation in the cold conditions raw material carry out the preliminary preheating furnace charge of heat exchange.
Raw material in epimere preheating chamber 4 certain time by preheating for the first time after, to open epimere preheating chamber tubulation bottom discharge valve, raw material flows to minute feed bin of hypomere heating chamber 5 by deadweight, at the hypomere heating chamber, divide the raw material in feed bin to enter respectively in the tubulation of hypomere heating chamber 5 by deadweight, heat for the second time in tubulation.Heat source is from the high-temperature flue gas be drawn out of in stove.CO gas in flue gas carries out secondary combustion from taper type bell 9 is extracted out, spraying into atomization heavy oil (or coal-seam gas, Sweet natural gas etc.) and blast air, to eliminate safe hidden trouble.
At first in epimere preheating chamber 4, tubulation is by of short duration preheating for raw material, then the tubulation that enters hypomere heating chamber 5 stops certain hour by second-heating, and raw material has now met into stove smelts desired temperature.The purpose of doing like this is to utilize to greatest extent the fume afterheat of closed electric furnace, to reach the effect of saving melting electric consumption.
Finally, the raw material be heated all is transported to insulation feed bin 6 and temporarily preserves.Flue gas is after passing through hypomere heating chamber 5 and epimere preheating chamber 4, and temperature is decrease, will be introduced to dust-removal system and be purified qualified discharge.
In the insulation feed bin, heated raw material will be added in burner hearth and carry out reducing and smelting by hollow electrode dosage unit 7.Hollow electrode dosage unit 7 design is on+20.0m plane.By travelling car, material feeding elephant trunk, weighing device, the tightness system that is flexible coupling, Balance Air facility, safeguards etc., formed.
Outlet design three cover screw feeders under the insulation feed bin, the material feeding elephant trunk be fixed on travelling car to three covers respectively unloads preheating material, and the material feeding elephant trunk is connected with the hollow graphite electrode end part seal by being flexible coupling, and considers and insulating graphite electrode simultaneously.
Balance Air facility source of the gas is taken from flue gas in flue, is pressurized to through induced draft fan the raw material that 3kPa falls in to hollow electrode and exerts pressure, and makes it approach free-fall velocity and enters molten bath in burner hearth.Travelling car can move on+20.0m planar tracks, in reinforced process, starts directly over electrode system.While continuing the electrode operation, disconnection is flexible coupling, and removes dolly, the operation of complete connection electrode, dolly meeting original place then, reconnect be flexible coupling, the operation of normally feeding in raw material after the equipment such as Balance Air.
What with hollow electrode dosage unit 7, directly be connected is reversely hung Yong conductive cross arm Graphite Electrodes unit.This unit presses laying mechanism, Graphite Electrodes etc. by fixed frame, lifting column, guide deflection sheave, hoist cylinder, conductive cross arm, electrode holder and forms.Fixed frame is by be fixed on+12.4m of wall screw platform.Framework divides two-layer up and down, and each arranges one deck guide deflection sheave, and column guides by guide deflection sheave, automated movement up and down under the effect of hoist cylinder, thus drive rise fall of electrodes, meet titanium slag and smelt the requirement to rise fall of electrodes.
，Bing center, bell zone, the center bell that Graphite Electrodes one end inserts the end face of taper type water cooled cover is the equilateral triangle distribution.The frustum type water cooled cover comprises main water-cooled framework, bell, center bell on every side.Bell water-cooled main frame is connected with furnace shell 10 by flange, and side is divided into 6～9 zones, covers the pipe type water cold drawing, is called as bell on every side; Taper type upper surface central zone covers the cooled plate of board-like or tubular type, is called the center bell.
Bell 9 surface design have explosion trap, observe door, pressure tap, blanking hole, electrode be by hole etc.The effect of bell is to keep the airtight reducing atmosphere of burner hearth, makes heat not scatter and disappear or reduce and scatter and disappear as far as possible.For extending water cooled cover work-ing life, bell internal surface knotting one deck refractory materials.
Furnace shell 10 and furnace lining 11 and bell 9 form an airtight burner hearth, at burner hearth sidewall, are designed with 1 or 2 slag iron escape orifices 12.
Slag iron mouth is driven the machine of blocking up 13 and is arranged on slagging or puts iron service platform surface, by hydraulic drive.When reaction in furnace reaches processing requirement, to open slagging or put the Tie Tong road with the machine of widening the view and carry out deslagging or send the iron operation, operation completes, and starts and blocks up machine sealing slagging or put the Tie Tong road, then carries out the smelting of next stove.
Whole electric furnace smelting process process is: raw material is transported to furnace roof furnace roof hopper 2 by feeding system inclination angle belt conveyor 1, by the rotating screw material feeder under the furnace roof hopper, is distributed to furnace roof weighing storehouse 3; Send into two-part raw material preheating unit 4 by furnace roof weighing storehouse 3 through accurate measurement again, after preliminary preheating, discharge is former expects that lower floor's heating chamber 5 further heats up.Hot raw material is temporary in insulation feed bin 6.Be admitted to burner hearth by screw feeder, hollow electrode dosage unit 7.
Reversely hung Yong conductive cross arm Graphite Electrodes unit 8 is totally 3 covers, respectively corresponding three-phase supply.35kV high voltage electric or 110kV high voltage electric are sent to high-tension switch cabinet, deliver to furnace transformer by the feeder cabinet feed-out cable again, furnace transformer is a three-phase transformer or three single phase transformers, deliver to conductive cross arm by bus bar, water-cooled cable again, finally by Graphite Electrodes to the furnace charge starting the arc, the high-temperature electric arc melting batch, make furnace charge carry out sufficient reduction reaction in burner hearth titanium oxide in ilmenite concentrate separated with iron, titanium oxide is enriched in slag and forms titanium slag, and iron becomes molten iron.
Finally, through widening the view operation, from slag iron escape orifice, discharge titanium slag and molten iron.This device adopts and stays slag to stay the pattern of iron operation to carry out the titanium slag smelting.
Claims (5)
1. the large-scale closed titanium slag of a carrying raw material primary heater unit is smelted special-purpose electric furnace, and described electric furnace comprises electrode unit 8, bell 9, furnace shell 10, furnace lining 11, slagging and puts iron mouth 12; Described furnace shell 10, furnace lining 11 and bell 9 form an airtight burner hearth, at burner hearth sidewall, slagging is set and puts iron mouth 12; It is characterized in that: described electric furnace comprises feeding system inclination angle belt conveyor 1, furnace roof hopper 2, furnace roof weighing storehouse 3, epimere preheating chamber 4 and hypomere heating chamber 5, insulation feed bin 6, hollow electrode dosage unit 7; Described feeding system inclination angle belt conveyor 1 one ends are fixed on ground, and the other end is fixed on the furnace roof plane, and furnace roof hopper 2 is set on the furnace roof plane; 2 times outlets of furnace roof hopper arrange screw feeder; Screw feeder and furnace roof weighing storehouse 3 8～12 independently the weighing storehouse be communicated with, each independently is communicated with minute feed bin and tubulation in epimere preheating chamber 4 in the weighing storehouse, lower end at epimere preheating chamber 4 arranges the baiting valve be communicated with hypomere heating chamber 5, and hypomere heating chamber 5 is communicated with insulation feed bin 6.
2. the large-scale closed titanium slag of a kind of carrying raw material primary heater unit according to claim 1 is smelted special-purpose electric furnace, it is characterized in that: in described epimere preheating chamber 4, the outer cavity of tubulation is communicated with hypomere heating chamber 5.
3. the large-scale closed titanium slag of a kind of carrying raw material primary heater unit according to claim 1 and 2 is smelted special-purpose electric furnace, it is characterized in that: described hollow electrode dosage unit 7 comprises that travelling car, material feeding elephant trunk, weighing device, the tightness system that is flexible coupling form; Hollow electrode dosage unit 7 directly is connected with electrode unit 8.
4. the large-scale closed titanium slag of a kind of carrying raw material primary heater unit according to claim 1 and 2 is smelted special-purpose electric furnace, it is characterized in that: described electrode unit 8 adopts reversely hung Yong conductive cross arm Graphite Electrodes unit, comprises that fixed frame, lifting column, guide deflection sheave, hoist cylinder, conductive cross arm, electrode holder press laying mechanism, Graphite Electrodes; Graphite Electrodes electrode circle diameter Ф 1300 ~ Ф 3000mm, Graphite Electrodes diameter Ф 450 ~ Ф 700mm.
5. the large-scale closed titanium slag of a kind of carrying raw material primary heater unit according to claim 1 and 2 is smelted special-purpose electric furnace, it is characterized in that: described bell 9 adopts the taper type water cooled cover, explosion trap, observation door, pressure tap, blanking hole, electrode are set by hole at the bell outside surface, at the bell internal surface, refractory materials are set.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320379752 CN203360529U (en) | 2013-06-28 | 2013-06-28 | Large-size closed high titanium slag smelting dedicated electric furnace with raw material preheating device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320379752 CN203360529U (en) | 2013-06-28 | 2013-06-28 | Large-size closed high titanium slag smelting dedicated electric furnace with raw material preheating device |
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| Publication Number | Publication Date |
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| CN203360529U true CN203360529U (en) | 2013-12-25 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 201320379752 Withdrawn - After Issue CN203360529U (en) | 2013-06-28 | 2013-06-28 | Large-size closed high titanium slag smelting dedicated electric furnace with raw material preheating device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103305705A (en) * | 2013-06-28 | 2013-09-18 | 西安电炉研究所有限公司 | Large closed high titanium slag smelting special electric furnace with raw material preheating device |
-
2013
- 2013-06-28 CN CN 201320379752 patent/CN203360529U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103305705A (en) * | 2013-06-28 | 2013-09-18 | 西安电炉研究所有限公司 | Large closed high titanium slag smelting special electric furnace with raw material preheating device |
| CN103305705B (en) * | 2013-06-28 | 2014-08-06 | 辽宁久星钛业有限责任公司 | Large closed high titanium slag smelting special electric furnace with raw material preheating device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20131225 Effective date of abandoning: 20140806 |
|
| RGAV | Abandon patent right to avoid regrant |