CN106500514B - A method of preventing electrodes in mine hot stove deflection - Google Patents
A method of preventing electrodes in mine hot stove deflection Download PDFInfo
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- CN106500514B CN106500514B CN201610909847.0A CN201610909847A CN106500514B CN 106500514 B CN106500514 B CN 106500514B CN 201610909847 A CN201610909847 A CN 201610909847A CN 106500514 B CN106500514 B CN 106500514B
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- furnace
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- heart
- facet
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- 238000000034 method Methods 0.000 title claims abstract description 15
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 12
- 238000004519 manufacturing process Methods 0.000 claims abstract description 11
- 238000010079 rubber tapping Methods 0.000 claims abstract description 10
- 229910052742 iron Inorganic materials 0.000 claims abstract description 6
- 239000000463 material Substances 0.000 abstract description 8
- 230000008569 process Effects 0.000 abstract description 6
- 238000005516 engineering process Methods 0.000 abstract description 4
- 230000001681 protective effect Effects 0.000 abstract description 2
- 229910052500 inorganic mineral Inorganic materials 0.000 description 9
- 239000011707 mineral Substances 0.000 description 9
- 230000000694 effects Effects 0.000 description 5
- 238000003723 Smelting Methods 0.000 description 4
- 229910001021 Ferroalloy Inorganic materials 0.000 description 3
- 239000004744 fabric Substances 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 230000035699 permeability Effects 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 210000002318 cardia Anatomy 0.000 description 1
- 230000002860 competitive effect Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 239000002003 electrode paste Substances 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 230000035800 maturation Effects 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 239000000523 sample Substances 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D11/00—Arrangement of elements for electric heating in or on furnaces
- F27D11/08—Heating by electric discharge, e.g. arc discharge
- F27D11/10—Disposition of electrodes
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Vertical, Hearth, Or Arc Furnaces (AREA)
- Furnace Details (AREA)
Abstract
A method of electrodes in mine hot stove deflection is prevented, in furnace during rewinding, receives furnace heart furnace charge after first zooming in face furnace charge；Between normal production period, hardened furnace charge at the electrode furnace heart in timely loose furnace；Iron phase surrounding them furnace charge out is carried out before tapping it is regular, guarantee electrode facet charge level it is high and at the furnace heart in ring charge level it is low；It is tight to seal facet thorn fire, while appropriate rise facet charge level when surrounding them generates thorn fire during tapping.The present invention causes to skim phenomenon outside three-phase electrode in furnace for not material feeding at the three-phase electrode furnace heart in furnace, the expansion aggravation of furnace one's will dies within one material region area, starts with from furnace rewinding operation is smash, improves the natural verticality of three-phase electrode；Simple process, operation difficulty are low；Aftertreatment technology is easy, environmentally protective.
Description
Technical field
The present invention relates to ore smelting technical fields, more particularly to a kind of method for preventing electrodes in mine hot stove deflection.
Background technique
With the fast development of iron and steel enterprise, the ferroalloy industry it is increasingly competitive, in order to make enterprise in industry competition
In can keep competitiveness for a long time, constantly grope, probe into new approaches, implement new process be industry long term growth it is necessary it
Road.
Currently, conventionally produced mode has finalized the design almost, and each producer's personalization production operation mode currently highlights,
Different operation modes promotes the height of index in the industry uneven, and technical-economic index gap gradually widens, for this purpose, for further drop
Accident rate in low-alloy production process increases the mineral hot furnace effective activity duration, and the management of mineral hot furnace heart -- electrode is especially
It is important.In In The Sub-mergedfurnace of The Ferroalloys production, electrode is the cardia of mineral hot furnace, and the height of electrode management level directly determines to produce
The height of product production technology economic indicator.
The type of current all electrodes of mineral hot furnace is roughly divided into three kinds: carbon pole, graphite electrode and self-baking electrode, from warp
Ji property angle is set out, and self-baking electrode is relatively inexpensive.Transmitting carrier of the electrode as main heating source in mineral hot furnace, electric conductivity is strong,
Fusing point is high, the coefficient of expansion is small and high mechanical strength is its basic demand, main function be it is thermally conductive, guarantee transformer output electric energy
Efficiently transmission improves mineral hot furnace molten bath power.
Three-phase electrode has atmosphere, in environment in high temperature for a long time in mineral hot furnace, constantly roasting and consumption circulation, but by furnace roof office
Limit equipment, in furnace in furnace charge circulation rate and cloth process external force effect, three-phase electrode nature verticality is affected, electricity
Pole itself discontinuity, under external force, there is different degrees of deflection in three-phase electrode in furnace, angle of deviation substantially 8 ° ±
2 °, lead to electrode accident, Frequent Troubles, directly affects the raising of mineral hot furnace efficiency and technical-economic index, make product
The indices such as yield and quality, cost deteriorate, and operate normally to enterprise and bring heavy losses.
Summary of the invention
A method of preventing electrodes in mine hot stove deflection, comprising the following steps:
Step 1: in furnace during rewinding, furnace heart furnace charge is received after first zooming in face furnace charge；
Step 2: between normal production period, hardened furnace charge at the electrode furnace heart in timely loose furnace；
Step 3: it is regular to the progress of iron phase surrounding them furnace charge out before tapping, guarantee at the electrode facet charge level Gao Erlu heart
In ring charge level it is low；
Step 4: during tapping, when surrounding them generates thorn fire, facet thorn fire, while the small fabric of appropriateness rise are sternly sealed
Face.
Beneficial effects of the present invention: the present invention is for not material feeding at the three-phase electrode furnace heart in furnace, furnace one's will dies within one material region area
Expansion aggravation causes to skim phenomenon outside three-phase electrode in furnace, starts with from furnace rewinding operation is smash, improves the naturally vertical of three-phase electrode
Degree；Simple process, operation difficulty are low；Aftertreatment technology is easy, environmentally protective.
Specific embodiment
A method of preventing electrodes in mine hot stove deflection, comprising the following steps:
Step 1: smelter is in furnace during rewinding, and emphasis is using the furnace heart after first facet as rewinding sequence, ring material in electrode
Face is lower than charge level 300mm at facet or so, the inaccurate rise of ring charge level in electrode；Guarantee that charge level is higher than inner ring charge level at facet, together
When the 2# expects pipe not blanking at the furnace heart in normally production smelting process, remaining 1#, 4#, 5#, 7#, 8#, 10# expects pipe blanking is more than
3#, 6#, 9# expects pipe discharge quantity are to increase big face gas permeability, by being laid out and being produced by furnace charge difference in a manner of loading and unloading and rewinding
Raw resistance prevents electrode from normally doing work the natural deflection in consumption process, guarantees its natural verticality；
Step 2: between normal production period on duty, in furnace at the three-phase electrode furnace heart hardened furnace charge with furnace charge stirrer prick bar press
Need to be loose in time, guarantee loose, the gas permeability of furnace heart district domain furnace charge, make the normal jetsam in furnace heart district domain, material feeding, convenient for whole smelting
Furnace temperature reduces, and expands three-phase electrode crucible area；Reduce effect of the hardened furnace charge to electrode external force, promote electrode normal consumption and
It presses；
Step 3: emphasis carries out regular and corresponding cloth operation, carries out for iron phase surrounding them furnace charge is gone out before tapping
High outside and low outside charge level windrow requirement, i.e. electrode facet charge level it is high and at the furnace heart in ring charge level it is low, avoid during tapping
The generation of the frequent material that collapses, steps on greatly material during avoiding out iron phase electrode facet from being in tapping, the effect of power is caused to electrode itself；
Step 4: during tapping, surrounding them is generated when piercing fire gently to receive in electrode based on ring thorn fire, is not damaged so that thorn is fiery
Subject to evil equipment, and tight envelope facet thorn fire, while facet charge level is done into appropriate rise, rising range is in 200 ± 50mm to reduce
Influence of the electrode unilateral side thorn fire to surrounding them furnace charge circulation.
Since in January, 2015, after this method is implemented, on electrode hard broken accident control, furnace roof sparking failure prevention
Good effect is obtained.Cut-off 20115 as maneuver is gradually with maturation, the accumulative hair of Fesi Furnace electrode hard broken accident
The furnace roof as caused by electrode deflection does not occur and strikes sparks failure by raw 8 pieces/time, year-on-year 2014 28 pieces/time of reductions, and year-on-year 2014
Year is reduced 15 times.Electrode hard breakage breaks end length according to average 2.0 meters/root measuring and calculating, year-on-year 2014, saves 104.01 tons of electrode paste
(3.14*0.65*0.65*2*1.4*28=104.01) save electrode shell 44.8 (28/1.25=44.8), resulting straight
Connecing economic benefit is 30.94 ten thousand yuan ((104.01*2623.93+44.8*813.68)/10000=30.94).In addition to this, due to
The stealthy benefits such as the yield that electrode hard broken accident, furnace roof sparking failure generate after being controlled increases, equipment loss declines are not done
Statistical calculation, for this purpose, the persistently application and mature in subsequent production of this maneuver, stabilization to production technology economic indicator and into
The promotion of one step plays the role of very important.The anti-bias rewinding maneuver of self-baking electrode, ferroalloy smelting it is domestic and international colleague or
Not existing standard between industry, theoretical foundation is mainly by adjusting mineral hot furnace self-baking electrode under normal roasting and work
It during capable or underthrust, is operated by the different layouts of surrounding them furnace charge and specific rewinding, suffered by reasonable distribution electrode
External force, in the case where normal acting, the external force that makes to bring from furnace charge and generate is evenly distributed, is distributed, and guarantees it just
Normal natural verticality, to improve the uniform of the mechanical efficiency of self-baking electrode, roasting quality and electrode current density, reduce due to
The variation of electrode internal stress caused by external force, avoids the electrode accident occurred after heating blowing-out.
Claims (1)
1. a kind of method for preventing electrodes in mine hot stove deflection, comprising the following steps:
Step 1: in furnace during rewinding, furnace heart furnace charge is received after first zooming in face furnace charge；
Step 2: between normal production period, hardened furnace charge at the electrode furnace heart in timely loose furnace；
Step 3: regular, ring in guaranteeing at the electrode facet charge level Gao Erlu heart is carried out before tapping to iron phase surrounding them furnace charge out
Charge level is low；
Step 4: tight to seal facet thorn fire, while appropriate rise facet charge level when surrounding them generates thorn fire during tapping.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610909847.0A CN106500514B (en) | 2016-10-19 | 2016-10-19 | A method of preventing electrodes in mine hot stove deflection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610909847.0A CN106500514B (en) | 2016-10-19 | 2016-10-19 | A method of preventing electrodes in mine hot stove deflection |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106500514A CN106500514A (en) | 2017-03-15 |
| CN106500514B true CN106500514B (en) | 2019-03-12 |
Family
ID=58294013
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610909847.0A Active CN106500514B (en) | 2016-10-19 | 2016-10-19 | A method of preventing electrodes in mine hot stove deflection |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0498086A (en) * | 1990-08-15 | 1992-03-30 | Ishikawajima Harima Heavy Ind Co Ltd | Dc arc furnace |
| CN1198525A (en) * | 1997-03-18 | 1998-11-11 | 普拉塞尔技术有限公司 | Lance/burner for molten metal furnace |
| CN101372322A (en) * | 2008-09-28 | 2009-02-25 | 云南澄江冶钢集团有限公司 | Electrode setting method of large-capacity electric furnace |
| CN101527980A (en) * | 2009-04-20 | 2009-09-09 | 成都高威节能科技有限公司 | Electrode batch-type hoisting method of mine soaking furnace electrode automatic control system |
| CN102695810A (en) * | 2009-07-17 | 2012-09-26 | 古拉姆·卡沙卡什韦利 | Method for smelting, reducing, alloying and processing steel |
-
2016
- 2016-10-19 CN CN201610909847.0A patent/CN106500514B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0498086A (en) * | 1990-08-15 | 1992-03-30 | Ishikawajima Harima Heavy Ind Co Ltd | Dc arc furnace |
| CN1198525A (en) * | 1997-03-18 | 1998-11-11 | 普拉塞尔技术有限公司 | Lance/burner for molten metal furnace |
| CN101372322A (en) * | 2008-09-28 | 2009-02-25 | 云南澄江冶钢集团有限公司 | Electrode setting method of large-capacity electric furnace |
| CN101527980A (en) * | 2009-04-20 | 2009-09-09 | 成都高威节能科技有限公司 | Electrode batch-type hoisting method of mine soaking furnace electrode automatic control system |
| CN102695810A (en) * | 2009-07-17 | 2012-09-26 | 古拉姆·卡沙卡什韦利 | Method for smelting, reducing, alloying and processing steel |
Non-Patent Citations (1)
| Title |
|---|
| 《小型制磷电炉"死炉"事故的抢救实践》;骆祖林等;《贵州化工》;20151231;第56页 |
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| CN106500514A (en) | 2017-03-15 |
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