CN107164604A - A kind of method that molten iron is incubated in ladle refining furnace - Google Patents
A kind of method that molten iron is incubated in ladle refining furnace Download PDFInfo
- Publication number
- CN107164604A CN107164604A CN201710282577.XA CN201710282577A CN107164604A CN 107164604 A CN107164604 A CN 107164604A CN 201710282577 A CN201710282577 A CN 201710282577A CN 107164604 A CN107164604 A CN 107164604A
- Authority
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- China
- Prior art keywords
- molten iron
- ladle
- refining furnace
- heat preserving
- heating
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Links
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 title claims abstract description 220
- 229910052742 iron Inorganic materials 0.000 title claims abstract description 110
- 238000007670 refining Methods 0.000 title claims abstract description 29
- 238000000034 method Methods 0.000 title claims abstract description 26
- 238000010438 heat treatment Methods 0.000 claims abstract description 27
- 238000007664 blowing Methods 0.000 claims abstract description 14
- 238000004519 manufacturing process Methods 0.000 claims abstract description 8
- 239000002893 slag Substances 0.000 claims description 20
- 239000003795 chemical substances by application Substances 0.000 claims description 19
- 239000003755 preservative agent Substances 0.000 claims description 14
- 235000008733 Citrus aurantifolia Nutrition 0.000 claims description 10
- 229910000831 Steel Inorganic materials 0.000 claims description 10
- 235000011941 Tilia x europaea Nutrition 0.000 claims description 10
- 239000004571 lime Substances 0.000 claims description 10
- 239000010959 steel Substances 0.000 claims description 10
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 8
- 241000209094 Oryza Species 0.000 claims description 7
- 235000007164 Oryza sativa Nutrition 0.000 claims description 7
- 238000003763 carbonization Methods 0.000 claims description 7
- 235000009566 rice Nutrition 0.000 claims description 7
- 239000010903 husk Substances 0.000 claims description 6
- 238000010792 warming Methods 0.000 claims description 6
- 239000000203 mixture Substances 0.000 claims description 5
- 239000000126 substance Substances 0.000 claims description 5
- WUKWITHWXAAZEY-UHFFFAOYSA-L calcium difluoride Chemical compound [F-].[F-].[Ca+2] WUKWITHWXAAZEY-UHFFFAOYSA-L 0.000 claims description 4
- 229910001634 calcium fluoride Inorganic materials 0.000 claims description 4
- 229910052681 coesite Inorganic materials 0.000 claims description 4
- 229910052906 cristobalite Inorganic materials 0.000 claims description 4
- 239000000377 silicon dioxide Substances 0.000 claims description 4
- 229910052682 stishovite Inorganic materials 0.000 claims description 4
- 229910052905 tridymite Inorganic materials 0.000 claims description 4
- 229910001209 Low-carbon steel Inorganic materials 0.000 claims description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 2
- 238000003723 Smelting Methods 0.000 claims description 2
- 229910052799 carbon Inorganic materials 0.000 claims description 2
- 238000000605 extraction Methods 0.000 claims description 2
- 239000000463 material Substances 0.000 claims description 2
- 229910052720 vanadium Inorganic materials 0.000 claims description 2
- LEONUFNNVUYDNQ-UHFFFAOYSA-N vanadium atom Chemical compound [V] LEONUFNNVUYDNQ-UHFFFAOYSA-N 0.000 claims description 2
- 238000009413 insulation Methods 0.000 abstract description 8
- 238000011084 recovery Methods 0.000 abstract description 3
- 230000015572 biosynthetic process Effects 0.000 abstract description 2
- 229910052751 metal Inorganic materials 0.000 description 6
- 239000002184 metal Substances 0.000 description 6
- 238000003756 stirring Methods 0.000 description 6
- 239000007788 liquid Substances 0.000 description 5
- 238000009628 steelmaking Methods 0.000 description 4
- 230000007306 turnover Effects 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 238000007711 solidification Methods 0.000 description 2
- 230000008023 solidification Effects 0.000 description 2
- 241000251468 Actinopterygii Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009749 continuous casting Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009847 ladle furnace Methods 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000002203 pretreatment Methods 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
- C21C7/00—Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00
- C21C7/0075—Treating in a ladle furnace, e.g. up-/reheating of molten steel within the ladle
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Treatment Of Steel In Its Molten State (AREA)
- Refinement Of Pig-Iron, Manufacture Of Cast Iron, And Steel Manufacture Other Than In Revolving Furnaces (AREA)
Abstract
The invention discloses a kind of molten iron in the heat preserving method of ladle refining furnace, it the described method comprises the following steps：(1) molten iron enters LF refining furnace；(2) thermometric and heating；(3) submerged arc；(4) heating and iron making；(5) ladle confirms.The present invention folds into molten iron in ladle on the premise of molten iron can not return to processing, and using ladle bottom blowing system, the ladle equipped with molten iron is carried out insulation operation in refining furnace, normally smelted after the molten iron of insulation is blended into converter after converter system recovery.When the present invention solves converter system exception in production, molten iron waits the problem of can not handling and long-time crouching bag to make the problem of ladle formation bag sticks together in iron bag for a long time.The inventive method had both reduced the loss of molten iron, turn avoid the problems such as influence ladle involucrum can not have enough to meet the need and take live place.
Description
Technical field
The invention belongs to metallurgical technology field, and in particular to a kind of method that molten iron is incubated in ladle refining furnace.
Technical background
With the continuous upgrading of steel products quality, various refining furnaces are increasing in the effect that steel-making region is played, and
Steel-making region is progressively exited as the mixed iron blast between ironmaking and steel-making, Most current undertakes molten iron using hot-metal bottle or fish torpedo ladle
Storage task, when converter system breaks down in production process, have molten iron before usual converter, after have molten steel, or even have down
What is gone out melts down molten steel.Generally it can be incubated or be disposed using refining furnace in terms of molten steel to continuous casting into strand；And
Molten iron will generally add substantial amounts of heat preserving agent and is incubated, and typically not surpass 16 hours in blowing out, molten iron by heat preserving agent insulation and
The measures such as iron making pre-treatment crust, most of molten iron can be blended into converter and be made steel, be stained with the iron bag of molten iron wrapped by changing or
The formal layout such as unpack in advance.If it exceeds 16 hours ladle stick together because cooling can form bag, the loss of molten iron had so both been caused,
The normal week of ladle may mainly be influenceed then cause subsequent production passive.
The content of the invention
The technical problems to be solved by the invention are to provide a kind of method that molten iron is incubated in ladle refining furnace.
The principle that this method can be heated up using ladle refining furnace to high temperature metal liquid, realization is entered to molten iron in ladle
The function of row insulation.It, which solves the molten iron crouching bag time, can cause molten iron can not be handled because being cooled to solidification more than 16h, mainly
The normal week of ladle may be influenceed then cause subsequent production passive.
In order to solve the above technical problems, the technical solution used in the present invention is：A kind of guarantor of molten iron in ladle refining furnace
Warm method, the described method comprises the following steps：
(1) molten iron enters LF refining furnace：Molten iron is slowly folded into the good ladle of bag condition, add heat preserving agent, ladle is hung to LF
Refining furnace sits bag position, connects bottom blowing system；
(2) thermometric and heating：Ladle is opened to heating position and carries out thermometric, target temperature is warming up to；
(3) submerged arc：Out of feed bin submerged arc slag, slagging agent and lime material, implementation process arc-covering slag operation are added to ladle；
(4) heating and iron making：Heating is reached after target temperature every time, is stopped heating, is then further continued for warming temperature, so anti-
It is multiple, until converter system possesses after working condition, outbound after temperature control to target temperature, by being transported to charging across flatcar
Across, realize operation to converter iron making；
(5) ladle confirms：Confirm that ladle furnace converts rear packet splicing amount, coordinate smelting steel grade and be further continued for using.
The method of the invention is applied to molten iron, by vanadium extraction or pretreated half steel.
Add 0.5-1.0kg/ ton molten iron of heat preserving agent in step (1) of the present invention, heat preserving agent can use carbonization rice husk or
Middle covering agent；The carbonization rice husk：Ash content≤36%, fixed carbon >=38%, H20≤1.5%；The middle covering agent is mainly changed
Study point as follows：CaO：27-33%,AL2O3：9-11%,SiO2：29-35%.
Bottom blowing gas intensity 200-600 NL/min in step (1) of the present invention.
Increasing extent of temperature is 2-5 DEG C/min, 1300-1350 DEG C of target temperature in step (2) of the present invention.
Add in step (3) of the present invention 1.0-3.0kg/ tons of molten iron of slagging agent, 1.0-3.0kg/ tons of molten iron of submerged arc slag,
4.0-10.0kg/ tons of molten iron of lime；The submerged arc slag main chemical compositions are as follows：CaO：35-45%, AL2O3：10-20%, SiO2：
5-10%, CaF2：2-6%, Si：5-8%；The slagging agent main chemical compositions are as follows：CaF2≥85%。
Heat time≤10min of target temperature is reached in step (4) of the present invention every time, reaches and stops after target temperature
Only warming temperature is further continued for after heating 90-120min.
The ladle after is not arranged production in step (5) of the present invention the low-carbon steel grade of C≤0.10%.
The mentality of designing of the present invention is as follows：
Principle is that possess the theoretical foundation heated up to high temperature metal liquid using ladle refining furnace.A kind of high temperature metal liquid is going out
Under conditions of existing possible solidification, the high temperature metal liquid can be folded into a ladle for possessing good bottom blowing condition, utilized
A kind of method that ladle refining furnace is incubated.
On the premise of producing for a long time occurs in converter system, molten iron can not be returned again when, at this moment molten iron is folded into
In ladle, using ladle bottom blowing system, the ladle equipped with molten iron is carried out insulation operation in refining furnace, after after converter system recovery
The molten iron of insulation is blended into converter to be smelted.
When the present invention successfully can solve the problem that the pneumatic steelmaking system off-time is longer, under conditions of molten iron can not be returned,
Molten iron is folded into ladle, is successfully incubated in refining furnace, it is to avoid 4 wrap the generation sticked together, realize and reproduce Hou Tiebao
Turnover and the reduction of cost.
It is using the beneficial effect produced by above-mentioned technical proposal：1st, the present invention possesses to high temperature using ladle refining furnace
The theoretical foundation of metal liquid heating, on the premise of molten iron can not return to processing, molten iron is folded into ladle, utilizes Ladle Bottom
System is blown, the ladle equipped with molten iron is carried out insulation operation in refining furnace, the molten iron of insulation is blended into after after converter system recovery
Converter is normally smelted.2nd, when the present invention solves converter system exception in production, molten iron is waited in iron bag for a long time
The problem of can not handling.3rd, the inventive method, which solves long-time crouching bag, can make the problem of ladle formation bag sticks together.4th, it is of the invention
Method had both reduced the loss of molten iron, turn avoid the problems such as influence ladle involucrum can not have enough to meet the need and take live place.
Embodiment
With reference to specific embodiment, the present invention is further detailed explanation.
Embodiment 1
The first iron clad regimen condition being incubated in 2#LF stoves is as follows：
It is 1231 DEG C that molten iron, which enters temperature behind LF stations, submerged arc slag and each 1.2kg/ tons of molten iron of slagging agent is added from feed bin, using 8 grades
Long arc heats 9min, the NL/min of bottom blowing gas intensity 300, and 1256 DEG C of thermometric, averagely 2.8 DEG C/min of heating add submerged arc slag again
7.5kg/ tons of molten iron of 1.6kg/ tons of molten iron and lime, using 4 grades of heating 9min, 1302 DEG C of thermometric, then the 4min that heats up, thermometric 1326
DEG C, output addition heat preserving agent（Carbonization rice husk）1.0kg/ tons of molten iron.It is spaced 37 DEG C of temperature drop after 90min, then (8+5) min in two times
Heating, later per in 110min, heats 13min, stirs and waits 7min, interval wait 90min, so repeatedly, last out-station temperature
1325 DEG C, there is a little packet splicing after iron making.
Embodiment 2
The second iron clad regimen condition being incubated in 2#LF stoves is as follows：
It is 1223 DEG C that molten iron, which enters temperature behind LF stations, submerged arc slag and each 1.5kg/ tons of molten iron of slagging agent is added from feed bin, using 6 grades
Long arc heats 9min, the NL/min of bottom blowing gas intensity 400, and 1246 DEG C of thermometric, averagely 2.6 DEG C/min of heating add submerged arc slag again
8.0kg/ tons of molten iron of 1.5kg/ tons of molten iron and lime, and 4 grades of heating 10min, 1288 DEG C of thermometric, then the 10min that heats up, thermometric 1317
DEG C, output addition heat preserving agent（Middle covering agent）0.5kg/ tons of molten iron；34 DEG C of temperature drop after 120min is spaced, then in two times (8+5)
Min heats up, and per in 140min, heats 13min, stirs and waits 7min, interval wait 120min, so repeatedly, last out-station temperature
1314 DEG C, there is a little packet splicing after iron making.
Embodiment 3
The first iron clad regimen condition being incubated in 1#LF stoves is as follows：
Molten iron arrives at a station 1266 DEG C of temperature, adds submerged arc slag and each 2.0kg/ tons of molten iron of slagging agent from feed bin, is added using 8 grades of long arcs
Hot 9min, the NL/min of bottom blowing gas intensity 500,1293 DEG C of thermometric, averagely heated up 3 DEG C/min, and 1.0kg/ tons of submerged arc slag is added again
9.0kg/ tons of molten iron of molten iron and lime, and 4 grades of heating 7min, 1329 DEG C of thermometric add heat preserving agent（Middle covering agent）0.8kg/
37 DEG C of temperature drop after ton molten iron, interval 100min, then (8+7) min that heats up in two times, later in every 120min, heat 15min, turn over
The 5min such as stir, be spaced 100min, so repeatedly, last 1329 DEG C of out-station temperature, without packet splicing after iron making.
Embodiment 4
The second iron clad regimen condition being incubated in 1#LF stoves is as follows：
Molten iron arrives at a station 1279 DEG C of temperature, adds submerged arc slag and each 1.0kg/ tons of molten iron of slagging agent from feed bin, is added using 6 grades of long arcs
Heat 9 min, the NL/min of bottom blowing gas intensity 600,1312 DEG C of thermometric, averagely 3.6 DEG C/min of heating add submerged arc slag 1.5kg/ again
Ton 5.0kg/ tons of molten iron of molten iron and lime, and 4 grades of heating 7min, 1344 DEG C of thermometric add heat preserving agent（Carbonization rice husk）0.5kg/
39 DEG C of temperature drop after ton molten iron, interval 100min, then (8+7) min that heats up in two times, later in every 120min, heat 15min, turn over
The 5min such as stir, be spaced 100min, so repeatedly, last 1347 DEG C of out-station temperature, without packet splicing after iron making.
Embodiment 5
The first iron clad regimen condition being incubated in 1#LF stoves is as follows：
Molten iron is arrived at a station 1256 DEG C of temperature, and 0.5kg/ tons of molten iron of submerged arc slag, 3.0kg/ tons of iron of slagging agent are separately added into from feed bin
Water, heats 10min, bottom blowing gas intensity 200NL/min, 1276 DEG C of thermometric, averagely 2 DEG C/min of heating add again using 8 grades of long arcs
10.0kg/ tons of molten iron of 0.5kg/ tons of molten iron of submerged arc slag and lime, and 4 grades of heating 7min, 1300 DEG C of thermometric add heat preserving agent（In
Covering agent）37 DEG C of temperature drop after 0.9kg/ tons of molten iron, interval 100min, then (8+7) min that heats up in two times, later per 120min
In, heat 15min, stir wait 5min, interval 100min, so repeatedly, last 1321 DEG C of out-station temperature, without packet splicing after iron making.
Embodiment 6
The second iron clad regimen condition being incubated in 1#LF stoves is as follows：
Molten iron is arrived at a station 1276 DEG C of temperature, and submerged arc slag and each 1.0kg/ ton molten iron of slagging agent are added from feed bin, using 6 grades of long arcs heating
9min, bottom blowing gas intensity 350NL/min, 1321 DEG C of thermometric, averagely heated up 5.0 DEG C/min, and 1.0kg/ tons of iron of submerged arc slag are added again
4.0kg/ tons of molten iron of water and lime, and 4 grades of heating 7min, 1350 DEG C of thermometric add heat preserving agent（Carbonization rice husk）0.6kg/ tons of iron
39 DEG C of temperature drop after water, interval 100min, then (8+7) min that heats up in two times, later in every 120min, heat 15min, stir
5min, is spaced 100min, so repeatedly, last 1347 DEG C of out-station temperature, without packet splicing after iron making.
Ladle after is not arranged production the low-carbon steel grade and steel grade that residual elements are required of C≤0.10%.
Above example is only used to illustrative and not limiting technical scheme, although with reference to above-described embodiment to this hair
It is bright to be described in detail, it will be understood by those within the art that：Still the present invention can be modified or be waited
With replacement, any modification or partial replacement without departing from the spirit and scope of the present invention, it all should cover the power in the present invention
Among sharp claimed range.
Claims (8)
1. a kind of molten iron is in the heat preserving method of ladle refining furnace, it is characterised in that the described method comprises the following steps：
(1) molten iron enters LF refining furnace：Molten iron is slowly folded into the good ladle of bag condition, add heat preserving agent, ladle is hung to LF
Refining furnace sits bag position, connects bottom blowing system；
(2) thermometric and heating：Ladle is opened to heating position and carries out thermometric, target temperature is warming up to；
(3) submerged arc：Out of feed bin submerged arc slag, slagging agent and lime material, implementation process arc-covering slag operation are added to ladle；
(4) heating and iron making：Heating is reached after target temperature every time, is stopped heating, is then further continued for warming temperature, so anti-
It is multiple, until converter system possesses after working condition, outbound after temperature control to target temperature, by being transported to charging across flatcar
Across, realize operation to converter iron making；
(5) ladle confirms：Confirm ladle packet splicing amount, coordinate smelting steel grade and be further continued for using.
2. a kind of molten iron according to claim 1 is in the heat preserving method of ladle refining furnace, it is characterised in that methods described is fitted
For molten iron, by vanadium extraction or pretreated half steel.
3. a kind of molten iron according to claim 1 is in the heat preserving method of ladle refining furnace, it is characterised in that the step
(1) 0.5-1.0kg/ tons of molten iron of heat preserving agent are added in, heat preserving agent can use carbonization rice husk or middle covering agent；The carbonization rice
Shell：Ash content≤36%, fixed carbon >=38%, H20≤1.5%；The middle covering agent main chemical compositions are as follows：CaO：27-33%,
AL2O3：9-11%,SiO2：29-35%.
4. a kind of molten iron according to claim 1 is in the heat preserving method of ladle refining furnace, it is characterised in that the step
(1) bottom blowing gas intensity 200-600NL/min in.
5. a kind of molten iron according to claim 1-4 any one is in the heat preserving method of ladle refining furnace, it is characterised in that
Increasing extent of temperature is 2-5 DEG C/min, 1300-1350 DEG C of target temperature in the step (2).
6. a kind of molten iron according to claim 1 is in the heat preserving method of ladle refining furnace, it is characterised in that the step
(3) 1.0-3.0kg/ tons of molten iron of slagging agent, 1.0-3.0kg/ tons of molten iron of submerged arc slag, 4.0-10.0kg/ tons of molten iron of lime are added in；
The submerged arc slag main chemical compositions are as follows：CaO：35-45%, AL2O3：10-20%, SiO2：5-10%, CaF2：2-6%, Si：5-
8%；The slagging agent main chemical compositions are as follows：CaF2≥85%。
7. a kind of molten iron according to claim 1-4 any one is in the heat preserving method of ladle refining furnace, it is characterised in that
Heat time≤10min of target temperature is reached in the step (4) every time, reaches and stops heating 90- after target temperature
Warming temperature is further continued for after 120min.
8. a kind of molten iron according to claim 1-4 any one is in the heat preserving method of ladle refining furnace, it is characterised in that
The ladle after is not arranged production in the step (5) the low-carbon steel grade of C≤0.10%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710282577.XA CN107164604B (en) | 2017-04-26 | 2017-04-26 | A kind of method that molten iron is kept the temperature in ladle refining furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710282577.XA CN107164604B (en) | 2017-04-26 | 2017-04-26 | A kind of method that molten iron is kept the temperature in ladle refining furnace |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107164604A true CN107164604A (en) | 2017-09-15 |
| CN107164604B CN107164604B (en) | 2018-10-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710282577.XA Expired - Fee Related CN107164604B (en) | 2017-04-26 | 2017-04-26 | A kind of method that molten iron is kept the temperature in ladle refining furnace |
Country Status (1)
| Country | Link |
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| CN (1) | CN107164604B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112522474A (en) * | 2020-12-01 | 2021-03-19 | 攀钢集团西昌钢钒有限公司 | Method for controlling LF refining end point temperature |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2675722A1 (en) * | 1991-04-25 | 1992-10-30 | Peugeot | Apparatus for filling holding furnaces |
| CN1336442A (en) * | 2000-07-29 | 2002-02-20 | 江苏淮钢集团有限公司 | Hot loading process of molten iron in electric furnace and conveying vehicle for blast furnace molten iron |
| CN103170612A (en) * | 2013-04-12 | 2013-06-26 | 北京首钢国际工程技术有限公司 | Melting method of bonded iron on hot-metal ladle |
| CN105779693A (en) * | 2016-04-20 | 2016-07-20 | 江苏迪萨机械有限公司 | Covering and uncovering device of LF furnace |
-
2017
- 2017-04-26 CN CN201710282577.XA patent/CN107164604B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2675722A1 (en) * | 1991-04-25 | 1992-10-30 | Peugeot | Apparatus for filling holding furnaces |
| CN1336442A (en) * | 2000-07-29 | 2002-02-20 | 江苏淮钢集团有限公司 | Hot loading process of molten iron in electric furnace and conveying vehicle for blast furnace molten iron |
| CN103170612A (en) * | 2013-04-12 | 2013-06-26 | 北京首钢国际工程技术有限公司 | Melting method of bonded iron on hot-metal ladle |
| CN105779693A (en) * | 2016-04-20 | 2016-07-20 | 江苏迪萨机械有限公司 | Covering and uncovering device of LF furnace |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112522474A (en) * | 2020-12-01 | 2021-03-19 | 攀钢集团西昌钢钒有限公司 | Method for controlling LF refining end point temperature |
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| Publication number | Publication date |
|---|---|
| CN107164604B (en) | 2018-10-16 |
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