CN102944118B - Method for forming furnace eye for submerged arc furnace - Google Patents
Method for forming furnace eye for submerged arc furnace Download PDFInfo
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- CN102944118B CN102944118B CN201210457070.0A CN201210457070A CN102944118B CN 102944118 B CN102944118 B CN 102944118B CN 201210457070 A CN201210457070 A CN 201210457070A CN 102944118 B CN102944118 B CN 102944118B
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- pipe
- eye
- mineral hot
- furnace
- built
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- 238000000034 method Methods 0.000 title claims abstract description 33
- 239000007791 liquid phase Substances 0.000 claims abstract description 27
- 239000000571 coke Substances 0.000 claims abstract description 24
- 239000007788 liquid Substances 0.000 claims abstract description 18
- 229910052500 inorganic mineral Inorganic materials 0.000 claims description 49
- 239000011707 mineral Substances 0.000 claims description 49
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 6
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 3
- 239000004927 clay Substances 0.000 claims description 3
- 239000002003 electrode paste Substances 0.000 claims description 3
- 229910052742 iron Inorganic materials 0.000 claims description 3
- 239000000155 melt Substances 0.000 claims description 3
- 238000007664 blowing Methods 0.000 abstract description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 239000002893 slag Substances 0.000 abstract description 2
- 238000002844 melting Methods 0.000 abstract 1
- 230000008018 melting Effects 0.000 abstract 1
- 239000000463 material Substances 0.000 description 4
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 3
- 229910052760 oxygen Inorganic materials 0.000 description 3
- 239000001301 oxygen Substances 0.000 description 3
- 238000003723 Smelting Methods 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 230000008859 change Effects 0.000 description 1
- 238000012512 characterization method Methods 0.000 description 1
- 230000001427 coherent effect Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 239000010808 liquid waste Substances 0.000 description 1
- 239000012071 phase Substances 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
Landscapes
- Vertical, Hearth, Or Arc Furnaces (AREA)
- Coke Industry (AREA)
Abstract
The invention discloses a method for forming a furnace eye of a submerged arc furnace. The method comprises the following steps of (1) filling coke and mud balls into an embedded pipe; (2) inserting the embedded pipe into a slag removing channel which is arranged at the bottom of a submerged arc furnace so that the outlet of the embedded pipe can extend to a furnace eye close to the submerged arc furnace, wherein the inlet of the embedded pipe is communicated with a liquid phase area of the submerged arc furnace; and (3) enabling the liquid in the liquid phase area to flow into the embedded pipe from the inlet of the embedded pipe, and melting the coke and mud balls in the embedded pipe. In such way, according to the method provided by the invention, as the embedded pipe is preset before blowing in, and the high temperature liquid in the liquid phase area is diverted to the furnace eye, the time for forming the furnace eye can be greatly shortened, the labor intensity for forming the furnace eye can be reduced, the production efficiency of the submerged arc furnace can be ensured, and the cost for the blowing-in furnace is reduced; in addition, the method further can be used for avoiding the condition that the wall of the submerged arc furnace is damaged as the furnace eye is easily formed in an inclined way by the conventional furnace eye forming method, therefore, the potential safety hazards are prevented.
Description
Technical field
The present invention relates to ore smelting technical field, particularly relate to a kind of method of mineral hot furnace blow-on eye.
Background technology
When being normal smelting operation, so-called mineral hot furnace eye in blow-on process again, gets through stove eye and slagging channel owing to organizing after extraneous factor or plant issue blowing out.If stove eye and slagging channel can not be got through in time, can not in time liquid waste residue be discharged in time after can causing open circuit, therefore cause load reduction, have a strong impact on the normal operation of mineral hot furnace.
In traditional technique, need to block stove eye and slagging channel with mud ball, to prevent that furnace charge from forming solid after cooling stove eye and slagging channel are stopped up.Because intensity under mud ball high temperature is large, must use oxygen lance blow-on eye (hold firing combustibles before stove, combustion-supporting by the high pressure oxygen in oxygen lance, the mud ball of stove intraocular is burnt, then stretch into a cutter eye instrument from stove eye and get through stove eye).
So operate not only blow-on eye overlong time, labour intensity is large, and easily stove eye is beaten tiltedly, destroyed the stability of furnace wall, increases potential safety hazard.
Summary of the invention
The present invention is intended at least one of solve the problems of the technologies described above.
For this reason, one object of the present invention is to propose a kind of method of quick and easy mineral hot furnace blow-on eye.
According to the method for the mineral hot furnace blow-on eye of the embodiment of the present invention, comprise the steps: that (1) will insert coke and mud ball in built-in pipe; (2) described built-in pipe is inserted in the slagging channel that is located at described mineral hot furnace bottom, so that the outlet of described built-in pipe extends to the stove eye place near described mineral hot furnace, the entrance of described built-in pipe is connected with the liquid phase region of described mineral hot furnace; And (3) make the liquid in liquid phase region flow in described built-in pipe from the entrance of described built-in pipe, melt coke and mud ball in described built-in pipe.
Thus, according to the method for the mineral hot furnace blow-on eye of the embodiment of the present invention, by set in advance built-in pipe before blow-on, high-temp liquid in liquid phase region is guided to stove eye place, can greatly shorten the time of blow-on eye and the labour intensity that reduces blow-on eye, guarantee the production efficiency of mineral hot furnace and reduced blow-on cost.In addition, adopt the method for mineral hot furnace blow-on eye of the present invention can also avoid traditional blow-on eye method easily stove eye to be beaten tiltedly, mineral hot furnace wall is caused to damage, therefore stopped potential safety hazard.
In addition, the method for mineral hot furnace blow-on eye according to the above embodiment of the present invention can also have following additional technical feature:
According to one embodiment of present invention, after step (2) completes, switching on power and make the heterogeneous electrode discharge of described mineral hot furnace, is liquid to melt the furnace charge of described liquid phase region.
According to one embodiment of present invention, the length that described electrode inserts in furnace charge is at least 1.6 meters.
According to one embodiment of present invention, the surrounding of the part in described electrode inserts furnace charge sets in advance coke.
The amount of the coke setting in advance according to one embodiment of present invention, is double centner.
According to one embodiment of present invention, described built-in pipe comprises the horizontal pipeline section inserting in described slagging channel and the inclination pipeline section being connected with described liquid phase region, and described horizontal pipeline section and described inclination pipeline section are logical by being weldingly connected.
According to one embodiment of present invention, described built-in pipe is iron pipe.
According to one embodiment of present invention, described coke and mud ball section gap are inserted in described built-in pipe, and fill mud ball in described built-in pipe exit.
According to one embodiment of present invention, described mud ball is made by broken electrode paste, graphite powder, fire clay and tar.
According to one embodiment of present invention, in described step (3), further comprise, at described stove eye place, in described built-in pipe, cut a hole eye.
Additional aspect of the present invention and advantage in the following description part provide, and part will become obviously from the following description, or recognize by practice of the present invention.
Accompanying drawing explanation
Above-mentioned and/or additional aspect of the present invention and advantage accompanying drawing below combination obviously and is easily understood becoming the description of embodiment, wherein:
Fig. 1 is the schematic diagram that arranges according to the built-in pipe of the method for the mineral hot furnace blow-on eye of the embodiment of the present invention;
Fig. 2 is the partial enlarged drawing at A place in Fig. 1; And
Fig. 3 is the schematic diagram of built-in pipe of the method for mineral hot furnace blow-on eye according to an embodiment of the invention.
The specific embodiment
Describe embodiments of the invention below in detail, the example of described embodiment is shown in the drawings, and wherein same or similar label represents same or similar element or has the element of identical or similar functions from start to finish.Below by the embodiment being described with reference to the drawings, be exemplary, only for explaining the present invention, and can not be interpreted as limitation of the present invention.
In description of the invention, it will be appreciated that, term " " center ", " longitudinally ", " laterally ", " on ", D score, " front ", " afterwards ", " left side ", " right side ", " vertically ", " level ", " top ", " end ", " interior ", orientation or the position relationship of indications such as " outward " are based on orientation shown in the drawings or position relationship, only the present invention for convenience of description and simplified characterization, rather than device or the element of indication or hint indication must have specific orientation, with specific orientation structure and operation, therefore can not be interpreted as limitation of the present invention.
In addition, term " first ", " second " be only for describing object, and can not be interpreted as indication or hint relative importance.
In description of the invention, it should be noted that, unless otherwise clearly defined and limited, term " installation ", " being connected ", " connection " should be interpreted broadly, and for example, can be to be fixedly connected with, connect integratedly, can be also to removably connect; Can be mechanical connection or electrical connection, can be also the connection of two element internals; Can be to be directly connected, also can indirectly be connected by intermediary, for the ordinary skill in the art, can understand as the case may be the concrete meaning of above-mentioned term.
Below with reference to Fig. 1 and Fig. 2, describe according to the method for the mineral hot furnace blow-on eye of the embodiment of the present invention.
As Figure 1-3, the method according to the mineral hot furnace blow-on eye of the embodiment of the present invention, comprises the steps:
The first step, will insert solid-state coke 11 and the mud ball 12 that fusing point is lower, and make coke 11 and mud ball 12 be full of built-in pipe in built-in pipe 1.
Second step, inserts built-in pipe 1 to be located in the slagging channel 21 of mineral hot furnace 2 one side bottoms, so that the outlet 12 of built-in pipe 1 extends to stove eye 22 places of contiguous mineral hot furnace 2, the entrance 14 of built-in pipe 1 is connected with the liquid phase region 31 of mineral hot furnace 2.
Before blow-on, can only the furnace charge 3 of mineral hot furnace 2 interior corresponding positions be cleared, the furnace charge 3 that is about to slagging channel 21 tops and periphery clears, and to facilitate, built-in pipe 1 is inserted in slagging channel 21.After built-in pipe 1 insertion slagging channel 21 is interior, furnace charge 3 is being filled out back in mineral hot furnace 2.
As shown in Figure 1, the liquid phase region 31 of mineral hot furnace 2 is formed in heterogeneous electrode 4 furnace charge 3 around, furnace charge 3 in liquid phase region 31 is because the discharge generation high temperature of heterogeneous electrode 4 becomes liquid state, even after blowing out a period of time, it is liquid that the furnace charge 3 in liquid phase region 31 still can keep.
The 3rd step, the liquid in liquid phase region 31 flows in built-in pipe 1 from the entrance 13 of built-in pipe 1, coke 11 and mud ball 12 in fusing built-in pipe 1.Particularly, when the outlet 13 of built-in pipe 1 extends to contiguous stove eye 22 places, and the entrance 14 of built-in pipe 1 is with after liquid phase region 31 in mineral hot furnace 2 is connected, liquid furnace charge 3 in liquid phase region 31 can flow in built-in pipe 1 with coke 11 and mud ball 12 in fusing built-in pipe 1 by the entrance 14 of built-in pipe 1, form outlet 14 places that mixing material flows and flow to along built-in pipe 1 built-in pipe 1, to melt gradually the furnace charge 3 that stops up stove eye 22 places.Can be easily that stove eye 22 is clear and coherent after the furnace charge 3 at stove eye 22 places is melted, so that slag charge can be discharged outside mineral hot furnace 2 through slagging channel 21 and stove eye 22.
Coke 11 easily melts and mixing material is formed to heat insulation effect, and mud ball 12 can also be by coke 11 shutoff in built-in pipe 1 except being easy to fusing.Coke 11 and mud ball 12 are packed in built-in pipe 1, can slow down the speed that high-temp liquid speed in liquid phase region 31 flow to stove eye 22 places, avoid blow-on personnel also when backfill furnace charge 3, and high-temp liquid has flow to stove eye 22 places, thereby blow-on personnel are damaged.
As shown in Figure 3, preferably, coke 11 and mud ball 12 section gaps are inserted in built-in pipe 1, the temperature that melts gradually and keep flowing into the high-temp liquid in built-in pipe 1 to reach coke 11 and mud ball 12.In addition, in built-in pipe 1 outlet, mud balls 12 are filled at 14 places, with by coke 11 shutoff in built-in pipe 1.
Mud ball 14 can be made by broken electrode paste, graphite powder, fire clay and tar.
Thus, according to the method for the mineral hot furnace blow-on eye of the embodiment of the present invention, by set in advance built-in pipe 1 before blow-on, high-temp liquid in liquid phase region is guided to stove eye 22 places, can greatly shorten the time of blow-on eye and the labour intensity that reduces blow-on eye, guarantee the production efficiency of mineral hot furnace and reduced blow-on cost.In addition, adopt the method for mineral hot furnace blow-on eye of the present invention can also avoid traditional blow-on eye method easily stove eye to be beaten tiltedly, mineral hot furnace wall is caused to damage, therefore stopped potential safety hazard.
As shown in Figure 1, according to one embodiment of present invention, mineral hot furnace 2 furnace outage times are long, may cause the furnace charge 3 in liquid phase region 31 to solid mineral, to change gradually, thereby cause not having high-temp liquid mineral aggregate to flow to stove eye 22 places by built-in pipe 1.
Therefore, after second step completes, switch on power and make the heterogeneous electrode 4 discharge generation high temperature of mineral hot furnace 2, the furnace charge 3 of melt phase region 31 of take is liquid.
Preferably, the length that electrode 4 inserts in furnace charge 3 is at least 1.6 meters, with the temperature of fast lifting liquid phase region 31.
In addition, for fuel is provided, extend the higher temperature in liquid phase region 31, and the resistance that reduces furnace charge 3, the surrounding that can insert the part in furnace charge 3 at electrode 4 sets in advance coke 32.The amount of the coke preferably, setting in advance in the surrounding of every electrode 4 is double centner.
As shown in Figure 2, according to another embodiment of the invention, in the 3rd step, further comprise, when the furnace charge of stove eye 22 is stopped up in high-temp liquid fusing, can be from mineral hot furnace 2 lateral stove eye 22 cutter eyes, to accelerate the process of blow-on eye.The furnace charge that now stops up stove eye 22 has been at least semi-molten state, therefore need not require great effort very much and can get through stove eye 22, can not cause and damage and deflect stove eye furnace wall.
Because liquid phase region 31 is positioned at the top of slagging channel 21 and stove eye 22, preferably, built-in pipe 1 can comprise the horizontal pipeline section 15 inserting in slagging channel and the inclination pipeline section 16 being connected with liquid phase region 31.Built-in pipe 1 can adopt iron pipe, and horizontal pipeline section 15 and inclination pipeline section 16 can be logical by being weldingly connected.
In the description of this description, the description of reference term " embodiment ", " some embodiment ", " example ", " concrete example " or " some examples " etc. means to be contained at least one embodiment of the present invention or example in conjunction with specific features, structure, material or the feature of this embodiment or example description.In this manual, the schematic statement of above-mentioned term is not necessarily referred to identical embodiment or example.And the specific features of description, structure, material or feature can be with suitable mode combinations in any one or more embodiment or example.
Although illustrated and described embodiments of the invention, those having ordinary skill in the art will appreciate that: in the situation that not departing from principle of the present invention and aim, can carry out multiple variation, modification, replacement and modification to these embodiment, scope of the present invention is limited by claim and equivalent thereof.
Claims (9)
1. a method for mineral hot furnace blow-on eye, is characterized in that, comprises the steps:
(1) coke and mud ball will be inserted in built-in pipe;
(2) described built-in pipe is inserted in the slagging channel that is located at described mineral hot furnace bottom, so that the outlet of described built-in pipe extends to the stove eye place near described mineral hot furnace, the entrance of described built-in pipe is connected with the liquid phase region of described mineral hot furnace; And
(3) liquid in liquid phase region is flowed in described built-in pipe from the entrance of described built-in pipe, melts coke and mud ball in described built-in pipe,
Wherein, described built-in pipe comprises the horizontal pipeline section inserting in described slagging channel and the inclination pipeline section being connected with described liquid phase region, and the port that described horizontal pipeline section and described inclination pipeline section lead to by being weldingly connected and described inclination pipeline section is communicated with described liquid phase region is higher than the port being communicated with described horizontal pipeline section.
2. the method for mineral hot furnace blow-on eye according to claim 1, is characterized in that, after step (2) completes, switch on power and make the heterogeneous electrode discharge of described mineral hot furnace, to melt the furnace charge of described liquid phase region, be liquid.
3. the method for mineral hot furnace blow-on eye according to claim 2, is characterized in that, the length that described electrode inserts in furnace charge is at least 1.6 meters.
4. the method for mineral hot furnace blow-on eye according to claim 3, is characterized in that, the surrounding of the part in described electrode inserts furnace charge sets in advance coke.
5. the method for mineral hot furnace blow-on eye according to claim 4, is characterized in that, described in the amount of the coke that sets in advance be double centner.
6. the method for mineral hot furnace blow-on eye according to claim 1, is characterized in that, described built-in pipe is iron pipe.
7. the method for mineral hot furnace blow-on eye according to claim 1, is characterized in that, described coke and mud ball section gap are inserted in described built-in pipe, and fills mud ball in described built-in pipe exit.
8. the method for mineral hot furnace blow-on eye according to claim 1, is characterized in that, described mud ball is made by broken electrode paste, graphite powder, fire clay and tar.
9. according to the method for the mineral hot furnace blow-on eye described in claim 1-8 any one, it is characterized in that, in described step (3), further comprise, at described stove eye place, in described built-in pipe, cut a hole eye.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210457070.0A CN102944118B (en) | 2012-11-14 | 2012-11-14 | Method for forming furnace eye for submerged arc furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210457070.0A CN102944118B (en) | 2012-11-14 | 2012-11-14 | Method for forming furnace eye for submerged arc furnace |
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| Publication Number | Publication Date |
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| CN102944118A CN102944118A (en) | 2013-02-27 |
| CN102944118B true CN102944118B (en) | 2014-12-10 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201210457070.0A Active CN102944118B (en) | 2012-11-14 | 2012-11-14 | Method for forming furnace eye for submerged arc furnace |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109974459B (en) * | 2017-12-28 | 2020-04-03 | 蓝星硅材料有限公司 | Method for repairing furnace eye by using electrode paste |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07292403A (en) * | 1994-04-22 | 1995-11-07 | Nippon Steel Corp | Blast furnace taphole brick structure |
| CN1345409A (en) * | 1999-04-01 | 2002-04-17 | 艾克米特技术公司 | Metallurgical vessel comprising tapping device and method for controlled, slag-free extraction of mol ten metal from said vessel |
| CN101240978A (en) * | 2007-02-09 | 2008-08-13 | 江西铜业集团公司 | Slag cleaning furnace once electricity-feeding temperature-raising method |
| CN102177260A (en) * | 2008-08-07 | 2011-09-07 | Tmt出铁测量技术有限公司 | Method and melt channels for interrupting and restoring the melt stream of iron and metal melts in tap hole channels of blast furnaces and drainage channels of melt furnaces |
| CN102252526A (en) * | 2011-07-06 | 2011-11-23 | 成都高威节能科技有限公司 | Device and method for drilling tap hole on submerged-arc furnace through oriented plasma |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102008036790B4 (en) * | 2008-08-07 | 2014-05-15 | Tmt Tapping-Measuring-Technology Gmbh | Tapping channel for the discharge of iron and metal melts and liquid slag from metallurgical containers, such as blast furnaces and furnaces |
-
2012
- 2012-11-14 CN CN201210457070.0A patent/CN102944118B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07292403A (en) * | 1994-04-22 | 1995-11-07 | Nippon Steel Corp | Blast furnace taphole brick structure |
| CN1345409A (en) * | 1999-04-01 | 2002-04-17 | 艾克米特技术公司 | Metallurgical vessel comprising tapping device and method for controlled, slag-free extraction of mol ten metal from said vessel |
| CN101240978A (en) * | 2007-02-09 | 2008-08-13 | 江西铜业集团公司 | Slag cleaning furnace once electricity-feeding temperature-raising method |
| CN102177260A (en) * | 2008-08-07 | 2011-09-07 | Tmt出铁测量技术有限公司 | Method and melt channels for interrupting and restoring the melt stream of iron and metal melts in tap hole channels of blast furnaces and drainage channels of melt furnaces |
| CN102252526A (en) * | 2011-07-06 | 2011-11-23 | 成都高威节能科技有限公司 | Device and method for drilling tap hole on submerged-arc furnace through oriented plasma |
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| CN102944118A (en) | 2013-02-27 |
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