CN101769678B - Furnace body of electric furnace - Google Patents
Furnace body of electric furnace Download PDFInfo
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- CN101769678B CN101769678B CN2008102468877A CN200810246887A CN101769678B CN 101769678 B CN101769678 B CN 101769678B CN 2008102468877 A CN2008102468877 A CN 2008102468877A CN 200810246887 A CN200810246887 A CN 200810246887A CN 101769678 B CN101769678 B CN 101769678B
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Abstract
The invention discloses a furnace body of an electric furnace, comprising a furnace shell and fireproof material layers. The furnace shell is provided with a product discharge port and a slag discharge port; and the fireproof material layers are respectively arranged on the bottom wall and the inner peripheral side wall of the furnace shell, wherein the fireproof material layer on the bottom wall is an aluminum carbon brick layer, and the fireproof material layer at the lower part of the inner peripheral side wall is a graphite brick layer. According to the electric furnace, the service life of the furnace body can be prolonged in a high-temperature state, the corrosion resistance of the furnace body on the slag is improved, the maintenance expenses is reduced, and the cost is saved.
Description
Technical field
The present invention relates to a kind of electric furnace body, especially relate to a kind of being applicable to and smelt oxide ore, corrosion stability height, long electric furnace body of life-span slag.
Background technology
Electric furnace is widely used for the Metal Melting field, for example is used for the melting of ferronickel, special steel and other multiple non-ferrous metal.For example, one Chinese patent application CN101029794 discloses a kind of electric arc furnaces.The inboard wall of furnace body of this electric furnace is laid common refractory usually, like magnesium chromium refractory brick layer.Because in fusion process, the temperature of melt is up to 1550 ℃, melt out metal for example the temperature of copper, nickel, cobalt greatly about about 1300 ℃; Slag temperature in the body of heater is about 1600 ℃, and the refractoriness of magnesium chromium refractory brick layer is 1700 ℃, and is therefore very approaching with the temperature of its slag; Particularly being used to smelt under the situation of oxide ore, is reducing atmosphere in the body of heater, and the life-span of refractory material is shorter thus; Damage easily, and a little less than the anti-slag corrosion ability of magnesium chromium refractory brick layer, need frequent blowing out to change refractory material; Reduced operating efficiency, cost increases.
Summary of the invention
The present invention is intended to solve at least one of the problems referred to above that exist in the prior art.
For this reason, one object of the present invention is to propose a kind of electric furnace body that corrosion stability is high, the life-span is long to slag.
According to electric furnace body of the present invention, comprising: furnace shell, said furnace shell have product discharge port and slag discharge port; And refractory masses, said refractory masses is separately positioned on the diapire and interior all sidewalls of said furnace shell, and the refractory masses on the wherein said diapire is the alumina carbon brick layer, and the refractory masses that in said, is arranged on its underpart on all sidewalls at least is the graphite brick layer.
In addition, electric furnace body also has following additional technical feature according to the present invention:
Said alumina carbon brick layer on the said furnace shell diapire is replaced with the undercloak that further is provided with below alumina carbon brick layer and the said alumina carbon brick layer.
Refractory masses in said on all sidewalls is made up of graphite brick layer that is arranged on its underpart and the alumina carbon brick layer that is provided with at an upper portion thereof.
Form half hole on every block of graphite brick, wherein adjacent graphite brick links to each other through the graphite key that inserts in their half holes.
Further comprise bell according to electric furnace body of the present invention, said bell is arranged on the top of furnace shell the open top with the capping furnace shell.
Further comprise elastic frame according to electric furnace body of the present invention, said elastic frame is arranged on the furnace shell outside to wale furnace shell.
Said elastic frame comprises: heel post, and said heel post is separately positioned on the both lateral sides of furnace shell; Cross-tie, said cross-tie connect the heel post that is positioned at both lateral sides from the above and below of furnace shell respectively along horizontal direction; Side clamping beam, said side clamping beam are arranged on the lateral outer side of heel post and extend the end of the cross-tie that stretches out from heel post with the above and below that is connected to furnace shell along the longitudinal direction of furnace shell; The end column, said end column is separately positioned on vertical both sides of furnace shell; Longitudinal tie, said longitudinal tie connect the end column that is positioned at vertical both sides respectively along the longitudinal direction from the furnace shell above and below; With the end clamping beam, said end clamping beam is arranged on vertical outside of end column and extends the end of the longitudinal tie that stretches out from the end column with the above and below that is connected to furnace shell along horizontal direction.
The two ends of said cross-tie are passed the side clamping beam that is positioned at the furnace shell both lateral sides respectively and are stretched out from the outside of side clamping beam; The two ends of said longitudinal tie are passed the end clamping beam that is positioned at the vertical both sides of furnace shell respectively and are stretched out from the outside of end clamping beam; The two ends of said longitudinal tie and cross-tie are formed with the threaded portion respectively; Be connected with nut on the said threaded portion, wherein between nut and side clamping beam and end clamping beam, be respectively equipped with elastic component.
Said elastic component is the truncated cone shape volute spring.
Said electric furnace body is a hexahedral shape, and the sidewall of electric furnace body slopes inwardly along the top-down direction.
Electric furnace body has one of advantage at least according to the present invention:
According to electric furnace body of the present invention; The refractory masses of all sidewalls is that the graphite brick layer constitutes in the furnace shell, and the fire-resistant point of graphite brick layer is 3000 ℃, and the magnesium chromium refractory brick layer of comparing fire-resistant point and be 1700 ℃ is higher; Because temperature is approximately 1600 ℃ in the stove; The temperature of melt (being mainly slag) is about 1500 ℃-1550 ℃, thus in the furnace shell life-span of the refractory masses on all sidewalls improve, reduced cost.
In addition, on diapire, below the alumina carbon brick layer, undercloak is set, has further reduced cost.
The further embodiment according to the present invention, the refractory masses on the top of all sidewalls is the alumina carbon brick layer in the furnace shell, thereby makes that the refractory masses that only contacts with melt is the graphite brick layer, has further reduced manufacturing cost.
In addition, form half hole on the every block of graphite brick 11 in the graphite brick layer 6 in the furnace shell on all sidewalls, adjacent graphite brick 11 links to each other through the graphite key 12 that inserts in half hole; Thereby 6 one-tenth on graphite brick layer in making on all sidewalls is as a whole; Because the proportion of slag is 3.5 tons/cubic metre, and the proportion of charcoal piece is 1.53 tons/cubic metre, graphite brick layer 6 is prone to floating under the high temperature convection action; Adopt the key syndeton, can graphite brick layer 6 more firm.
Sidewall according to electric furnace body of the present invention slopes inwardly along the top-down direction, and is provided with the elastic frame of waling furnace shell, can make body of heater obtain good expansion character, thereby improve the service life of body of heater, reduces maintenance cost.
Additional aspect of the present invention and advantage part in the following description provide, and part will become obviously from the following description, or recognize through practice of the present invention.
Description of drawings
Above-mentioned and/or additional aspect of the present invention and advantage obviously with are easily understood becoming the description of embodiment from combining figs, wherein:
Fig. 1 is that the master of the electric furnace of with good grounds embodiment of the invention electric furnace body looks cross-sectional schematic;
Fig. 2 is the side-looking cross-sectional schematic of the electric furnace of with good grounds embodiment of the invention electric furnace body;
Fig. 3 is the cutaway view along the line A-A among Fig. 1;
Fig. 4 is that the master according to the electric furnace body of the embodiment of the invention looks cross-sectional schematic;
Fig. 5 is the cutaway view along the line B-B among Fig. 4;
Fig. 6 is the enlarged diagram of two blocks of adjacent graphite bricks among Fig. 5;
Fig. 7 is the cutaway view along the line C-C of Fig. 4 Shen.
The specific embodiment
Describe embodiments of the invention below in detail, the example of said embodiment is shown in the drawings, and wherein identical from start to finish or similar label is represented identical or similar elements or the element with identical or similar functions.Be exemplary through the embodiment that is described with reference to the drawings below, only be used to explain the present invention, and can not similarly be limitation of the present invention.
Need to prove; In the present invention; Term " on ", position relations such as D score, " laterally ", " vertically ", " outside ", " side ", " end " are for based on position shown in the drawings relation, only be for the ease of describing the present invention, and can not be interpreted as limitation of the present invention.
Electric furnace body according to the embodiment of the invention is described with reference to the drawings below.
Fig. 1 and 2 shows the electric furnace that has according to the electric furnace body of the embodiment of the invention, and electric furnace comprises electric furnace body 100 and is arranged on body of heater 100 tops and stretches into the electrode 10 in the electric furnace body 100.
Like Fig. 1, shown in 2,4 and 7, electric furnace body 100 comprises furnace shell 1, be arranged on the refractory masses 5 on the diapire of furnace shell 1 and be arranged in refractory masses 6 on all sidewalls.Wherein the refractory masses on the diapire 5 is the alumina carbon brick layer, and the refractory masses 6 on interior all sidewalls is the graphite brick layer.
Thus, in the process of smelting, temperature is approximately 1550 ℃ melt (being mainly slag) contact graphite brick layer; And the temperature below the slag is approximately 1000 ℃-1300 ℃ molten sulfonium contact alumina carbon brick layer 5; The refractory temperature of graphite brick layer 6 is 3000 ℃, therefore can adapt to the melt of high-temperature, and is high to the corrosion resistance of melt; Prolong the life-span, practiced thrift cost.
In one embodiment of the invention, in order further to reduce cost, on the diapire of furnace shell 1, below alumina carbon brick layer 5, further be provided with undercloak 4.Simultaneously, on interior all sidewalls of furnace shell 1, graphite brick layer 6 is arranged on the bottom that contacts with melt, and top is alumina carbon brick layer 7, therefore can further reduce cost.
As illustrated in Figures 5 and 6, in one embodiment of the invention, form half hole 110 on every block of graphite brick 11 of graphite brick layer 6, and complete hole of 110 formations, half hole of adjacent graphite brick 11, wherein in complete hole, be inserted with graphite key 12.Because the proportion of slag is 3.5 tons/cubic metre, and the proportion of graphite brick 11 is 1.53 tons/cubic metre, in fusion process; Temperature is very high in the stove, and under convection action, the graphite brick layer 6 of sidewall is stressed big; Upwards floating easily; Adopt graphite key 12 to connect, graphite brick layer 6 constitutes an integral body, can make graphite brick layer 6 more firm.Graphite brick layer 6 can help the melting to oxide ore at steady operation under the reducing atmosphere simultaneously.
Like Fig. 1,2, shown in 7 and 8, furnace shell 1 is formed with product discharge port 9 and opens wide with slag discharge port 8 and its top, and product discharge port 9 is used to discharge melted molten sulfonium, ferronickel liquation etc. for example, and slag discharge port 8 is used to discharge smelting slag.
For the top end opening of closed electric furnace body of heater 100, be provided with bell 2 on the top of electric furnace body 100.As shown in Figure 3, on bell 2, be provided with the power supply utmost point 10 and insert the inlet 22 that jack 21 in the electric furnace bodies 100 is used for supply melting raw material in body of heater.Yet, need to prove that the inlet that is used for supply melting raw material in body of heater is not limited to be formed on bell 2, for example also can be formed on the sidewall of furnace shell 1, this can understand for those of ordinary skill in the art easily.
The sidewall of furnace shell 1 slopes inwardly along direction from the top down; It is the truncated cone shape that is shaped as substantially of body of heater 100; For example, in Fig. 1,2, the example shown in 4 and 7, body of heater is a hexahedral shape; Thereby being shaped as of body of heater cuts a rectangular pyramid shape substantially, and promptly four of body of heater sides are up big and down small trapezoidal shape.The bulk expansion performance of the electric furnace body 100 of this shape is good.
With shown in Fig. 4 and 7, in another embodiment of the present invention, electric furnace body 100 also comprises elastic frame like Fig. 1-3.Elastic frame is arranged on furnace shell 1 outside, is used to wale furnace shell 1.For example, furnace shell 1 can be made up of the polylith metallic plate, and each metallic plate is placed in the elastic frame, on the sidewall of furnace shell 1 and diapire, lays refractory masses 2 then.Therefore, thus elastic frame can either prevent that furnace shell 1 from splitting by banding furnace shell 1, can adapt to the expansion of furnace shell 1 again.
According to a concrete example of the present invention, elastic frame comprises heel post 32a, end column 32b, cross-tie 333a and longitudinal tie 333b, side clamping beam 31a and end clamping beam 31b.
Heel post 32a is separately positioned on the both lateral sides (both sides up and down among Fig. 2 of furnace shell 1; The left and right sides among Fig. 3); Cross-tie 33a respectively from the below of the top of furnace shell 1 end face and furnace shell 1 bottom surface along the horizontal direction of furnace shell (like the above-below direction Fig. 2; Left and right directions among Fig. 3) top and bottom of the heel post 32a of connection furnace shell 1 both lateral sides; Side clamping beam 31a is separately positioned on the lateral outer side of heel post 32a and extends the end of the cross-tie 33a that stretches out from heel post 32a with the above and below that is connected to furnace shell 1 along the longitudinal direction, thus, wales furnace shell 1 in a lateral direction.
That is to say; Above and below at furnace shell 1; The cross-tie 33a of elastic frame connects the top and bottom of the transverse upright 32a of both lateral sides along horizontal direction; Longitudinal tie 33b along the longitudinal direction connection lengthwise to the top and bottom of the end column 32b of both sides, thereby connect and the end of the heel post 32a of tension both lateral sides through side clamping beam 31a, connect and strain the end of end column 32b of vertical both sides through end clamping beam 31b so that wale furnace shell 1.Certainly, the cross-tie 33a and the longitudinal tie 33b of furnace shell 1 top are in different plane, and same, the cross-tie 33a and the longitudinal tie 33b of furnace shell 1 below also are in different plane.In addition, the cross-tie 33a of furnace shell 1 top and longitudinal tie 33b can pass bell 7.
Shown in Fig. 1-3; The two ends of cross-tie 33a are passed the top and bottom of heel post 32a respectively and are stretched out from the side clamping beam 31a outside; The two ends of cross-tie 33a are formed with the threaded portion respectively; Be combined with nut 14 on the said threaded portion, be provided with elastic component 13 between nut 14 and the heel post 32a, for example the taper volute spring.Through rotation nut 14, can regulate the pulling force of cross-tie 33a, thereby regulate horizontal clamping force furnace shell 1 to transverse upright 32a.
Similarly; The two ends of longitudinal tie 33b are passed the top and bottom of end column 32b respectively and are stretched out from the end clamping beam 31b outside; The two ends of longitudinal tie 33b are formed with the threaded portion; Be combined with nut 14 on the said threaded portion, be provided with elastic component 13 between nut 14 and the end column 32b, for example the taper volute spring.Through rotation nut 14, can regulate the pulling force of longitudinal tie 33b opposite end column 32b, thereby regulate vertical clamping force furnace shell 1.
As shown in figures 1 and 3, in an alternative embodiment of the invention, electric furnace body 100 further comprises bearing 3, and bearing 3 is arranged on the furnace shell bottom and is used to support furnace shell 1.At this moment, the cross-tie 33a of furnace shell 1 below and longitudinal tie 33b can pass bearing 3.
According to electric furnace body 100 of the present invention, the refractory masses through all sidewalls in the furnace shell is set to the graphite brick layer, can prolong the working life under the condition of high temperature, improves the corrosion stability to slag, reduces maintenance cost, practices thrift cost.In the further embodiment of the present invention, electric furnace body 100 madial walls are inwardly downward-sloping, and the outside is waled by elastic frame, so the bulk expansion performance is good.
Although illustrated and described embodiments of the invention; For those of ordinary skill in the art; Be appreciated that under the situation that does not break away from principle of the present invention and spirit and can carry out multiple variation, modification, replacement and modification to these embodiment, scope of the present invention is limited claim and equivalent thereof.
Claims (8)
1. an electric furnace body is characterized in that, comprising:
Furnace shell, said furnace shell have product discharge port and slag discharge port;
Refractory masses, said refractory masses are separately positioned on the diapire and interior all sidewalls of said furnace shell, and the refractory masses on the wherein said diapire is the alumina carbon brick layer, and the refractory masses that in said, is arranged on its underpart on all sidewalls at least is the graphite brick layer; With
Elastic frame, said elastic frame are arranged on the furnace shell outside to wale furnace shell, and wherein said elastic frame comprises:
Heel post, said heel post is separately positioned on the both lateral sides of furnace shell;
Cross-tie, said cross-tie connect the heel post that is positioned at both lateral sides from the above and below of furnace shell respectively along horizontal direction;
Side clamping beam, said side clamping beam are arranged on the lateral outer side of heel post and extend the end of the cross-tie that stretches out from heel post with the above and below that is connected to furnace shell along the longitudinal direction of furnace shell;
The end column, said end column is separately positioned on vertical both sides of furnace shell;
Longitudinal tie, said longitudinal tie connect the end column that is positioned at vertical both sides respectively along the longitudinal direction from the furnace shell above and below; And
End clamping beam, said end clamping beam are arranged on vertical outside of end column and extend the end of the longitudinal tie that stretches out from the end column with the above and below that is connected to furnace shell along horizontal direction.
2. electric furnace body according to claim 1 is characterized in that, the said alumina carbon brick layer on the said furnace shell diapire is replaced with the undercloak that further is provided with below alumina carbon brick layer and the said alumina carbon brick layer.
3. electric furnace body according to claim 1 is characterized in that, said in refractory masses on all sidewalls constitute by graphite brick layer that is arranged on its underpart and the alumina carbon brick layer that is provided with at an upper portion thereof.
4. according to claim 1 or 3 described electric furnace bodies, it is characterized in that form half hole on every block of graphite brick in the graphite brick layer, wherein adjacent graphite brick links to each other through the graphite key that inserts in their half holes.
5. electric furnace body according to claim 1 is characterized in that, further comprises bell, and said bell is arranged on the top of furnace shell the open top with the capping furnace shell.
6. electric furnace body according to claim 1; It is characterized in that; The two ends of said cross-tie are passed the side clamping beam that is positioned at the furnace shell both lateral sides respectively and are stretched out from the outside of side clamping beam; The two ends of said longitudinal tie are passed the end clamping beam that is positioned at the vertical both sides of furnace shell respectively and are stretched out from the outside of end clamping beam; The two ends of said longitudinal tie and cross-tie are formed with the threaded portion respectively, are connected with nut on the said threaded portion, wherein between nut and side clamping beam and end clamping beam, are respectively equipped with elastic component.
7. electric furnace body according to claim 6 is characterized in that, said elastic component is the truncated cone shape volute spring.
8. electric furnace body according to claim 1 is characterized in that, said electric furnace body is a hexahedral shape, and the sidewall of electric furnace body slopes inwardly along the top-down direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008102468877A CN101769678B (en) | 2008-12-30 | 2008-12-30 | Furnace body of electric furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008102468877A CN101769678B (en) | 2008-12-30 | 2008-12-30 | Furnace body of electric furnace |
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| Publication Number | Publication Date |
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| CN101769678A CN101769678A (en) | 2010-07-07 |
| CN101769678B true CN101769678B (en) | 2012-02-01 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2008102468877A Active CN101769678B (en) | 2008-12-30 | 2008-12-30 | Furnace body of electric furnace |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102607923B (en) * | 2012-04-11 | 2014-04-09 | 中国科学院半导体研究所 | Silicon carbide material corrosion furnace |
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| CN1320800A (en) * | 2000-04-27 | 2001-11-07 | 尹兴伊 | Insulating brick, refractory brick and method for masoning rotary kiln |
| CN1327143A (en) * | 2000-05-30 | 2001-12-19 | 大同特殊钢株式会社 | Metal smelting equipment |
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| CN1703607A (en) * | 2002-10-11 | 2005-11-30 | 哈茨有限公司 | Furnace binding and adjustment systems |
| CN201359429Y (en) * | 2008-12-30 | 2009-12-09 | 中国恩菲工程技术有限公司 | Electric furnace body |
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2008
- 2008-12-30 CN CN2008102468877A patent/CN101769678B/en active Active
Patent Citations (6)
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|---|---|---|---|---|
| US5322543A (en) * | 1993-02-04 | 1994-06-21 | Lazcano Navarro Arturo | Simplified method for producing ductile iron |
| CN1320800A (en) * | 2000-04-27 | 2001-11-07 | 尹兴伊 | Insulating brick, refractory brick and method for masoning rotary kiln |
| CN1327143A (en) * | 2000-05-30 | 2001-12-19 | 大同特殊钢株式会社 | Metal smelting equipment |
| CN1703607A (en) * | 2002-10-11 | 2005-11-30 | 哈茨有限公司 | Furnace binding and adjustment systems |
| CN2583597Y (en) * | 2002-11-28 | 2003-10-29 | 侯松发 | Electric arc stove for electric melt fire-resisting material |
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Non-Patent Citations (1)
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