CN202968610U - Variable frequency electric furnace for smelting and reducing metal and non-metal in mineral by pyrogenic process - Google Patents
Variable frequency electric furnace for smelting and reducing metal and non-metal in mineral by pyrogenic process Download PDFInfo
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- CN202968610U CN202968610U CN 201220674590 CN201220674590U CN202968610U CN 202968610 U CN202968610 U CN 202968610U CN 201220674590 CN201220674590 CN 201220674590 CN 201220674590 U CN201220674590 U CN 201220674590U CN 202968610 U CN202968610 U CN 202968610U
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- furnace
- electric furnace
- frequency conversion
- burner hearth
- variable frequency
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Abstract
The utility model discloses a variable frequency electric furnace for smelting and reducing metal and non-metal in a mineral by a pyrogenic process. The variable frequency electric furnace comprises an electric furnace shell, wherein a hearth is surrounded in the electric furnace shell through a fireproof furnace lining; a variable frequency furnace induction coil is covered on the fireproof furnace lining; a variable frequency furnace yoke ring is arranged on the variable frequency furnace induction ring; graphite electrode heating sources are arranged in the hearth; and the graphite electrode heating sources are uniformly distributed in the hearth. The variable frequency electric furnace disclosed by the utility model has the beneficial effects that the variable frequency electric furnace is suitable for melting and reducing a plurality of minerals, and electric efficiency utilization rate is remarkably improved, so as to widen application field of the variable frequency electric furnace in actual production.
Description
Technical field
The utility model relates to a kind of modified version frequency conversion electric furnace for mineral metal and nonmetal smelting reducing extraction process.
Background technology
Owing to mostly being non-conductive thing in mineral composition, directly adopt the frequency conversion electric furnace can't the heat fused raw mineral materials.So, generally use mineral hot furnace, converter, electric arc furnace to reduce at the reduction mineral at present, but all there are some defectives in these, for example investment cost is large, floor space is wide, energy consumption is large, electrical efficiency is low, and environmental pollution is large, and simultaneously, the rate of recovery is low.
The utility model content
The purpose of this utility model solves the problems of the technologies described above, and proposes a kind of modified version frequency conversion electric furnace for mineral metal and nonmetal smelting reducing extraction process.
The utility model is achieved through the following technical solutions.
Be used for pyrometallurgical smelting reduction mineral metal and nonmetallic frequency conversion electric furnace, comprise the electric furnace furnace shell, enclose the formation burner hearth by refractorily lined in described electric furnace furnace shell, be coated with the frequency conversion furnace ruhmkorff coil on described refractorily lined, be provided with the frequency conversion furnace yoke ring on described frequency conversion furnace ruhmkorff coil, be vertically installed with the Graphite Electrodes pyrotoxin in described burner hearth, described Graphite Electrodes pyrotoxin is distributed in burner hearth.
Preferably, the bottom of described burner hearth is provided with special-shaped refractory casting piece, described refractorily lined is arranged on special-shaped refractory casting piece, and described Graphite Electrodes pyrotoxin bottom is provided with graphite electrode nipple, and the other end of described graphite electrode nipple is connected with special-shaped refractory casting piece.
Preferably, the centre of described burner hearth bottom is fixed with gas permeable brick, is fixedly connected with the gas ventilation pipe with the outer UNICOM of stove in described gas permeable brick, and described gas permeable brick is fixed on different in nature fire-resistant pour.
Preferably, described gas permeable brick is threaded with being connected to of gas ventilation pipe.
Preferably, described graphite electrode nipple is that thread is connected with special-shaped refractory casting piece.
Preferably, described Graphite Electrodes pyrotoxin is provided with four.
Preferably, the relative aperture 1:0.8-1:1 of furnace height and burner hearth.
The beneficial effects of the utility model are mainly reflected in: equipped Graphite Electrodes mode in this kind frequency conversion electric stove hearth 1, has fundamentally solved the restricted condition of frequency conversion electric furnace on can't the non-conductive mineral equipment of melting.Because it is pyrotoxin that the Graphite Electrodes of conductive magneto-conductive has been installed in burner hearth the inside, there has been the heating graphite source just can be at the non-conductive raw mineral materials of smelting reduction inside the frequency conversion electric furnace.
2, this kind structure graphite electrode pyrotoxin is to adopt implantation, Graphite Electrodes firmly is fixed on the special-shaped fire-resistant pour of burner hearth bottom, and the installation of being convenient to the Graphite Electrodes pyrotoxin is changed and maintenance.
3, this kind structure has also installed the furnace bottom gas permeable brick additional at burner hearth bottom, and this structure can be filled into various gases that in the molten steel of burner hearth and thawing, in molten steel, impurity improves useful metal and nonmetallic cleanliness factor to remove by it.
Description of drawings
Fig. 1: the cross-sectional view of the utility model equipment.
Embodiment
Below in conjunction with drawings and Examples, the utility model is further described:
The utility model has disclosed a kind of modified version frequency conversion furnace for mineral metallic reducing extraction process, in conjunction with shown in Figure 1, be used for pyrometallurgical smelting reduction mineral metal and nonmetallic frequency conversion electric furnace, comprise electric furnace furnace shell 1, enclose the formation burner hearth by refractorily lined 3 in described electric furnace furnace shell 1, be coated with frequency conversion furnace ruhmkorff coil 6 on described refractorily lined 3, be provided with frequency conversion furnace yoke ring 4 on described frequency conversion furnace ruhmkorff coil 6, be provided with Graphite Electrodes pyrotoxin 2 in described burner hearth.
The bottom of described burner hearth is provided with special-shaped refractory casting piece, and described Graphite Electrodes pyrotoxin 2 bottoms are provided with graphite electrode nipple 10, and the other end of described graphite electrode nipple 10 is connected with special-shaped refractory casting piece 7 by thread.
The centre of described burner hearth bottom is fixed with gas permeable brick 9, and described gas permeable brick 9 internal threads are connected with the gas ventilation pipe 8 with the outer UNICOM of stove, and described gas permeable brick 9 is fixed on different in nature fire-resistant pour 7.Increase gas permeable brick 9 with in realizing that oxygen and other gas are filled into the molten steel that melts in burner hearth in the middle of burner hearth bottom, played the effect of adjusting the refining of even molten steel composition.Burner hearth bottom has been set up special-shaped fire-resistant pour 7, and special-shaped fire-resistant pour 7 has guaranteed that in burner hearth, high-temperature molten steel is non-leakage; Simultaneously, fixed support Graphite Electrodes pyrotoxin 2 by graphite electrode nipple 10; Be provided with gas inlet pipe 8 in the centre, can pass into gas in burner hearth through gas permeable brick 9.
Relative aperture 1:0.8-the 1:1 of furnace height and burner hearth, furnace height refer in the process that comes into operation, melt pool height in burner hearth.The proportionlity of the height in molten bath and burner hearth bore can guarantee the heating effect of Graphite Electrodes pyrotoxin 2 in burner hearth more fully, make the temperature at bottom in burner hearth, middle part, fire door place even, the raw mineral materials at fire door place also can well melt, prevent that fire door place temperature is low, raw mineral materials is not easy to melt crust.Simultaneously, also reduce furnace bottom and add oxygen blast gas and the scaling loss of other gas to burner hearth sidewall.
Below sketch lower principle of work of the present utility model:
Install Graphite Electrodes pyrotoxin 2 additional and absorb the electromagnetic field that frequency conversion furnace ruhmkorff coils 6 produce in the frequency conversion electric stove hearth, so just with Graphite Electrodes as the pyrotoxin in burner hearth.The Graphite Electrodes pyrotoxin can energy transform into heat energy electromagnetic induction in burner hearth, then by pass to, convection current, radiation be heated thawing with the non-conductive raw mineral materials that heat energy is directly passed in burner hearth.
The utility model equipment is in concrete the use time, and raw mineral materials directly joins burner hearth inside by fire door, and the space in burner hearth is full of.Open high power frequency conversion power supply frequency conversion electric current and add ruhmkorff coil by wire, ruhmkorff coil then produces high-power frequency conversion magnetic field and acts directly on the Graphite Electrodes heating element that is fixed in the burner hearth center, make it produce huge heat energy, the non-conductive raw mineral materials around it is heated and melts.
Begin to melt more than 1400 ℃ and restore metal and just can the turndown slagging-off when nonmetal when the raw mineral materials in burner hearth reaches, can continue to heat raw mineral materials after slagging-off and melt reduction.The gas with various that molten steel after slagging-off reduction can pass into by the burner hearth bottom ventpipe in burner hearth is removed impurity in molten steel, improves useful metal and nonmetallic cleanliness factor.The molten steel of handling well can vert by tap hole and come out of the stove, and completes the thawing reduction process at this.Due to the screw fixation method of Graphite Electrodes, the raw mineral materials of reduction to be melted can directly add burner hearth inner by fire door.Turndown is slagged tap, is not needed when tapping the Graphite Electrodes in burner hearth is taken out, and only Graphite Electrodes need to be rotated get off to hang out when needing to change Graphite Electrodes to get final product.
The utility model still has numerous embodiments, and all employing equivalents or equivalent transformation and all technical schemes of forming are within all dropping on protection domain of the present utility model.
Claims (7)
1. be used for pyrometallurgical smelting reduction mineral metal and nonmetallic frequency conversion electric furnace, comprise the electric furnace furnace shell, enclose the formation burner hearth by refractorily lined in described electric furnace furnace shell, be coated with the frequency conversion furnace ruhmkorff coil on described refractorily lined, be provided with the frequency conversion furnace yoke ring on described frequency conversion furnace ruhmkorff coil, it is characterized in that: be vertically installed with the Graphite Electrodes pyrotoxin in described burner hearth, described Graphite Electrodes pyrotoxin is distributed in burner hearth.
2. as claimed in claim 1 for pyrometallurgical smelting reduction mineral metal and nonmetallic frequency conversion electric furnace, it is characterized in that: the bottom of described burner hearth is provided with special-shaped refractory casting piece, described refractorily lined is arranged on special-shaped refractory casting piece, described Graphite Electrodes pyrotoxin bottom is provided with graphite electrode nipple, and the other end of described graphite electrode nipple is connected with special-shaped refractory casting piece.
3. as claimed in claim 2 for pyrometallurgical smelting reduction mineral metal and nonmetallic frequency conversion electric furnace, it is characterized in that: the centre of described burner hearth bottom is fixed with gas permeable brick, be fixedly connected with the gas ventilation pipe with the outer UNICOM of stove in described gas permeable brick, described gas permeable brick is fixed on different in nature fire-resistant pour.
4. as claimed in claim 3 for pyrometallurgical smelting reduction mineral metal and nonmetallic frequency conversion electric furnace, it is characterized in that: described gas permeable brick is threaded with being connected to of gas ventilation pipe.
5. as claimed in claim 4 for pyrometallurgical smelting reduction mineral metal and nonmetallic frequency conversion electric furnace, it is characterized in that: described graphite electrode nipple is that thread is connected with special-shaped refractory casting piece.
6. as claimed in claim 5 for pyrometallurgical smelting reduction mineral metal and nonmetallic frequency conversion electric furnace, it is characterized in that: described Graphite Electrodes pyrotoxin is provided with four.
7. as claimed in claim 6 for pyrometallurgical smelting reduction mineral metal and nonmetallic frequency conversion electric furnace, it is characterized in that: the relative aperture 1:0.8-1:1 of furnace height and burner hearth.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220674590 CN202968610U (en) | 2012-12-10 | 2012-12-10 | Variable frequency electric furnace for smelting and reducing metal and non-metal in mineral by pyrogenic process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220674590 CN202968610U (en) | 2012-12-10 | 2012-12-10 | Variable frequency electric furnace for smelting and reducing metal and non-metal in mineral by pyrogenic process |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202968610U true CN202968610U (en) | 2013-06-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220674590 Expired - Fee Related CN202968610U (en) | 2012-12-10 | 2012-12-10 | Variable frequency electric furnace for smelting and reducing metal and non-metal in mineral by pyrogenic process |
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| Country | Link |
|---|---|
| CN (1) | CN202968610U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106679419A (en) * | 2017-01-25 | 2017-05-17 | 苏州振湖电炉有限公司 | Frequency conversion induction aluminum furnace |
| CN106839764A (en) * | 2017-01-25 | 2017-06-13 | 苏州振湖电炉有限公司 | Variable frequency induction aluminium technique |
-
2012
- 2012-12-10 CN CN 201220674590 patent/CN202968610U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106679419A (en) * | 2017-01-25 | 2017-05-17 | 苏州振湖电炉有限公司 | Frequency conversion induction aluminum furnace |
| CN106839764A (en) * | 2017-01-25 | 2017-06-13 | 苏州振湖电炉有限公司 | Variable frequency induction aluminium technique |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130605 Termination date: 20131210 |