CN107641676A - The temperature raising method of low molten steel consumption pneumatic steelmaking - Google Patents
The temperature raising method of low molten steel consumption pneumatic steelmaking Download PDFInfo
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- CN107641676A CN107641676A CN201710850784.0A CN201710850784A CN107641676A CN 107641676 A CN107641676 A CN 107641676A CN 201710850784 A CN201710850784 A CN 201710850784A CN 107641676 A CN107641676 A CN 107641676A
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Abstract
The invention discloses the temperature raising method of low molten steel consumption pneumatic steelmaking, and molten bath heat is supplemented using coke and/or carborundum；Coke is calculated by 6.2~6.5 DEG C/kg of ton steel heating efficiency and added, and coke usage amount≤1000kg/ stoves；Carborundum is calculated by 8.6~9.1 DEG C/kg of ton steel heating efficiency and added, and carborundum usage amount≤500kg/ stoves；As molten iron Si≤0.4wt%, preferentially using carborundum；During molten iron Si >=0.65wt%, preferentially using coke；During molten iron 0.4wt% ＜ Si ＜ 0.65wt%, coordinated using coke, carborundum and carry out temperature raising.This method can effectively ensure the heat balance of converter, solve the problems such as converter temperature is low, smelting cycle is long, consumption of raw and auxiliary materials is high, so as to significantly improve the scrap ratio of converter, promote the recovery of steel scrap and recycle, effectively reduce carbon emission.For this method compared with conventional converter smelting, molten steel yield can improve more than 15%；Molten steel consumption substantially reduces, and can reach 800kg/t, and the iron and steel stock cost of pneumatic steelmaking reduces by 6 yuan/t, and Cleanliness of Molten Steel meets normal production requirement.
Description
Technical field
The present invention relates to a kind of method for making steel, the temperature raising method of especially low molten steel consumption pneumatic steelmaking.
Background technology
The hot metal ratio of pneumatic steelmaking is generally higher than 85%, with country's banning and clearing up comprehensively to " bar steel ", about 100,000,000 tons
Scrap resources are launched, and steel scrap price is significantly lower than molten iron price, therefore, are reduced pneumatic steelmaking molten iron proportion, are improved steel scrap
Addition can significantly reduce steel-making cost, improve molten steel yield, have obvious economic benefit and social benefit.It is but useless
The raising of steel addition can make a big impact to liquid steel temperature in converter, cause the shortage of heat of converter, and then influence to smelt
Process is normally carried out.
Solve the problems, such as that the method that converter shortage of heat is taken in low molten steel consumption smelting process is broadly divided into two classes, when to
The heat needed for temperature raising agent supplement, such as coke, coal dust, Antaciron are added in converter；Its shortcoming is to cause the converter quantity of slag to increase
Add, recovery rate of iron reduces, the rise of Impurities of Molten Steel content.Second, the nytrons such as heavy oil, diesel oil, natural gas are blown into converter
Thing, pass through the heat needed for the chemical reaction supplement of hydrocarbon；Its shortcoming is that hydrogen content can be significantly raised in molten steel.
The A of publication number CN 103060510 patent application discloses a kind of smelting of the high scrap ratio using gas heating
Method, it, to converter injecting oxygen and fuel gas, passes through heat supplement converter smelting caused by burning using multifunctional nozzle
Institute's calorific requirement, converter smelting scrap ratio can be controlled 30~60%, realize that converter steelmaking process largely recycles scrap resources
Purpose.This method is limited in that multifunctional nozzle is complicated, and steel scrap ratio is had a great influence by calorific value of gas.
The content of the invention
The technical problem to be solved in the present invention is to provide a kind of temperature raising method of low molten steel consumption pneumatic steelmaking, is turned with realizing
The heat balance of stove.
In order to solve the above technical problems, the technical solution used in the present invention is：It is molten using coke and/or carborundum supplement
Pond heat；Coke is calculated by 6.2~6.5 DEG C/kg of ton steel heating efficiency and added, and coke usage amount≤1000kg/ stoves；Carborundum
Calculate and add by 8.6~9.1 DEG C/kg of ton steel heating efficiency, and carborundum usage amount≤500kg/ stoves；As molten iron Si≤0.4wt%
When, preferentially using carborundum；During molten iron Si >=0.65wt%, preferentially using coke；During molten iron 0.4wt% ＜ Si ＜ 0.65wt%, make
Coordinated with coke, carborundum and carry out temperature raising.
When the present invention coordinates progress temperature raising using coke, carborundum, coke is calculated by the 40%~60% of the temperature raising temperature difference and added.
Carborundum of the present invention starts to be added portionwise after converter first slag is formed, and every batch of addition is no more than 150kg, batch
Adjacent time inter between material is not less than 1min, oxygen blast 10min and within all add.
Rifle position improves 50~100mm before carborundum of the present invention adds per batch of material.
Coke of the present invention Primary period add 100~150kg, remaining blowing mid-term add, oxygen blast 10min and
Within all add.During using coke and carborundum, the addition time of blowing mid-term coke is 30~45s after carborundum addition.
It is using beneficial effect caused by above-mentioned technical proposal：The present invention can effectively ensure that the heat of converter is put down
Weighing apparatus, solves the problems such as converter temperature is low, smelting cycle is long, consumption of raw and auxiliary materials is high；So as to significantly improve the scrap ratio of converter,
Promote the recovery of steel scrap and recycle, effectively reduce carbon emission.Under the conditions of identical iron water amount, of the invention and conventional converter smelting
Compare, molten steel yield can improve more than 15%；Compared with conventional converter smelting, molten steel consumption substantially reduces, and can reach 800kg/t,
The iron and steel stock cost of pneumatic steelmaking reduces by 6 yuan/t, and Cleanliness of Molten Steel meets normal production requirement.
Embodiment
With reference to embodiment, the present invention is further detailed explanation.
The temperature raising method of the low molten steel consumption pneumatic steelmaking uses following techniques：
（1）According to molten iron temperature information, molten iron and adding amount of scrap steel are determined.During molten iron temperature T >=1250 DEG C, by molten steel consumption
800kg/t determines molten iron and adding amount of scrap steel.
（2）Calculate the temperature raising temperature difference：According to hot metal composition and temperature information, molten iron charge weight, steel scrap charge weight using automatically
The static models of steel-making calculate converter terminal temperature, and it is temperature raising simulation temperature that model, which calculates temperature and the difference of converter target temperature,
Difference.When the addition of following coke, carborundum or coke and carborundum is calculated, the temperature raising temperature difference is to simulate the temperature difference in temperature raising
Any value in the range of ± 3 DEG C.
（3）Select suitable temperature raising agent：Using coke and/or carborundum, counted according to the charge weight of molten iron and steel scrap
Calculate；According to the temperature raising temperature difference by coke ton steel heating efficiency be 6.2~6.5 DEG C/kg, the ton steel of carborundum heat up efficiency be 8.6
~9.1 DEG C/kg calculates addition；Carborundum usage amount≤500kg/ stoves, coke usage amount≤1000kg/ stoves.When molten iron Si≤
During 0.4wt%, prioritizing selection carborundum, i.e., body temperature is carried out using carborundum, when carborundum usage amount 500kg/ stoves can not still reach
During temperature raising target, then add coke；During molten iron Si >=0.65wt%, preferentially using coke, i.e., temperature raising is carried out using coke, work as Jiao
When charcoal usage amount 1000kg/ stoves can not still reach temperature raising target, then add carborundum.During molten iron 0.4wt% ＜ Si ＜ 0.65wt%,
Temperature raising is used cooperatively using coke, carborundum, coke adds by the 40%~60% of the temperature raising temperature difference, and carborundum is remaining by the temperature raising temperature difference
60%~40% add；The calculation formula of addition is shown in formula I and formula II：
Coke addition=M × temperature raising the temperature difference/coke heating efficiency × charge weight I；
Silicon carbide addition=N × temperature raising the temperature difference/carborundum heating efficiency × charge weight II；
In formula, M spans are 0.4~0.6, N=1-M.
（3）The addition opportunity of temperature raising agent：Carborundum is after converter first slag is formed（Open about 4min after blowing）Start to be added portionwise,
Every batch of addition is no more than 150kg, and the time interval of adjacent two batch of material is not less than 1min, oxygen blast 10min and within all plus
It is complete；20~30s rifle positions improve 50~100mm before being added per batch of material, regard smelting situation adjustment rifle position after addition in 5~15s.
Coke adds 100~150kg in Primary period, and remaining is added in blowing mid-term；During using coke and the common temperature raising of carborundum, blow
The time that adds for refining mid-term coke is 30~45s after carborundum adds, it is desirable to is all added within oxygen blast 10min.
Embodiment 1：The temperature raising method of the low molten steel consumption pneumatic steelmaking uses following concrete technologies.
（1）Molten iron and steel scrap condition：1350 DEG C, molten iron Si 0.65%, iron water amount 57.1t of molten iron temperature, steel scrap amount
21.4t；Converter terminal condition：1655 DEG C of target temperature, target C 0.07%.
（2）Outlet temperature is calculated as 1612 DEG C using automatic steel-making static calculation model, with target endpoint temperature phase
Than 43 ± 3 DEG C of temperature raising agent temperature raising need to be used.
（3）According to molten iron condition, using coke temperature raising, the temperature raising efficiency of coke is pressed by 6.5 DEG C/kg calculating, temperature raising temperature
46 DEG C of calculating, usage amount=(57.1+21.4) × 46/6.5=543.5kg of coke, coke addition round value 545kg.
（4）Blown using conventional oxygen rifle, coke added according to bath temperature, flame situation in good time in converting process,
Ensure that converting process is steady, slugging works well.Coke adds 150kg in Primary period, and remaining adds in three batches in blowing mid-term
Enter, addition is respectively 120kg, 140kg, 135kg, is all added within oxygen blast 10min.
（5）The present embodiment blowing oxygen quantity 3894Nm3, 1659 DEG C of outlet temperature, terminal C 0.06%, terminal composition is qualified, meets
Normal production conditions.
（6）The present embodiment adds coke 545kg, and actual temperature raising amplitude is 47 DEG C.Molten steel amount is 73.7t, and molten steel consumption is
775kg/t。
Embodiment 2：The temperature raising method of the low molten steel consumption pneumatic steelmaking uses following concrete technologies.
（1）Molten iron and steel scrap condition：1344 DEG C, molten iron Si 0.68%, iron water amount 57.5t of molten iron temperature, steel scrap amount
21.3t；Converter terminal condition：1652 DEG C of target temperature, target C 0.07%.
（2）Outlet temperature is calculated as 1611 DEG C using automatic steel-making static calculation model, with target endpoint temperature phase
Than 41 ± 3 DEG C of temperature raising agent temperature raising need to be used.
（3）According to molten iron condition, using coke temperature raising, the temperature raising efficiency of coke is pressed by 6.2 DEG C/kg calculating, temperature raising temperature
41 DEG C of calculating, usage amount=(57.5+21.3) × 41/6.2=521kg of coke, coke addition round value 520kg.
（4）Blown using conventional oxygen rifle, coke added according to bath temperature, flame situation in good time in converting process,
Ensure that converting process is steady, slugging works well.Coke adds 120kg in Primary period, and remaining adds in three batches in blowing mid-term
Enter, addition is respectively 120kg, 135kg, 145kg, is all added within oxygen blast 10min.
（5）The present embodiment blowing oxygen quantity 3907Nm3, 1654 DEG C of outlet temperature, actual temperature raising amplitude is 43 DEG C, terminal C
0.07%, terminal composition is qualified, meets normal production conditions.
（6）The present embodiment adds coke 520kg, and actual temperature raising amplitude is 43 DEG C, and molten steel amount is 73t, molten steel consumption
787kg/t。
Embodiment 3：The temperature raising method of the low molten steel consumption pneumatic steelmaking uses following concrete technologies.
（1）Molten iron and steel scrap condition：1329 DEG C, molten iron Si 0.38%, iron water amount 59.3t of molten iron temperature, steel scrap amount
18.9t；Converter terminal condition：1658 DEG C of target temperature, target C 0.07%.
（2）Outlet temperature is calculated as 1600 DEG C using automatic steel-making static calculation model, with target endpoint temperature phase
Than 58 ± 3 DEG C of temperature raising agent temperature raising need to be used.
（3）According to molten iron condition, using carborundum temperature raising, the temperature raising efficiency of carborundum is by 8.6 DEG C/kg calculating, temperature raising temperature
Degree is by 55 DEG C of calculating, usage amount=(59.3+18.9) × 55/8.6=500kg of carborundum, the addition value of carborundum
500kg。
（4）Carborundum is after converter first slag is formed（Open about 4min after blowing）Start to be added portionwise, respectively 120kg,
120kg, 120kg, 140kg, 1~1.5min of time interval of adjacent two batch of material, are all added within oxygen blast 10min；Every batch
20~30s rifle positions improve 50mm before material adds, and regard smelting situation adjustment rifle position after addition in 5~15s.
（5）The present embodiment blowing oxygen quantity 3918Nm3, 1656 DEG C of outlet temperature, actual temperature raising amplitude is 56 DEG C, terminal C
0.07%, terminal composition is qualified, meets normal production conditions.
（6）The present embodiment adds carborundum 500kg, and actual temperature raising amplitude is 56 DEG C, and molten steel amount is 73.3t, molten steel consumption
809kg/t。
Embodiment 4：The temperature raising method of the low molten steel consumption pneumatic steelmaking uses following concrete technologies.
（1）Molten iron and steel scrap condition：1314 DEG C, molten iron Si 0.40%, iron water amount 58t of molten iron temperature, steel scrap amount 20t；Turn
Stove end-condition：1659 DEG C of target temperature, target C 0.08%.
（2）Outlet temperature is calculated as 1602 DEG C using automatic steel-making static calculation model, with target endpoint temperature phase
Than 57 ± 3 DEG C of temperature raising agent temperature raising need to be used.
（3）According to molten iron condition, using carborundum temperature raising, the temperature raising efficiency of carborundum is by 8.8 DEG C/kg calculating, temperature raising temperature
Degree rounds value 480kg by 54 DEG C of calculating, usage amount=(58+20) × 54/8.8=478.6kg of carborundum, Silicon carbide addition.
（4）Carborundum is after converter first slag is formed（Open about 4min after blowing）Start to be added portionwise, respectively 150kg,
120kg, 110kg, 100kg, 1~1.5min of time interval of adjacent two batch of material, are all added within oxygen blast 8min；Per batch of material
20~30s rifle positions improve 80mm before addition, regard smelting situation adjustment rifle position after addition in 5~15s.
（5）The present embodiment blowing oxygen quantity 3899Nm3, 1656 DEG C of outlet temperature, actual temperature raising amplitude is 54 DEG C, terminal C
0.07%, terminal composition is qualified, meets normal production conditions.
（6）The present embodiment adds carborundum 480kg, and actual temperature raising amplitude is 54 DEG C, and molten steel amount is 73t, molten steel consumption
795kg/t。
Embodiment 5：The temperature raising method of the low molten steel consumption pneumatic steelmaking uses following concrete technologies.
（1）Molten iron and steel scrap condition：1303 DEG C, molten iron Si 0.45%, iron water amount 58.7t of molten iron temperature, steel scrap amount
20.5t；Converter terminal condition：1660 DEG C of target temperature, target C 0.08%.
（2）Outlet temperature is calculated as 1579 DEG C using automatic steel-making static calculation model, with target endpoint temperature phase
Than 81 ± 3 DEG C of temperature raising agent temperature raising need to be used.
（3）According to molten iron condition, temperature raising agent is that carborundum and coke are arranged in pairs or groups, and coke heating efficiency is by 6.3 DEG C/kg, carbonization
Silicon is by 9.1 DEG C/kg, temperature raising temperature by 80 DEG C of calculating；Coke addition=0.5 × 80/6.3 × (58.7+20.5)=502.8kg,
Silicon carbide addition=0.5 × 80/9.1 × (58.7+20.5)=348kg, coke addition round value 500kg, and carborundum adds
Measure whole value 350kg.
（4）Blown using conventional oxygen rifle, add carborundum and coke in converting process in good time, ensure that converting process is put down
Surely, slugging works well.Carborundum is after converter first slag is formed（Open about 4min after blowing）Start to be added portionwise, every batch of addition is not
More than 150kg, the time interval of adjacent two batch of material is not less than 1min, and 20~30s rifle positions improve 100mm before being added per batch of material, add
Rifle position is restored in 8~10 after entering, coke adds 140kg in Primary period, and remaining is in blowing 6min, 7.5min, 9min
Add, addition is respectively 120kg, 120kg, 120kg, and coke addition opportunity is placed on carborundum and added between 30~45s of completion；
Above-mentioned carborundum and coke all add within oxygen blast 10min.
（5）The present embodiment blowing oxygen quantity 3962Nm3, 1655 DEG C of outlet temperature, terminal C 0.075%, terminal composition is qualified, full
Sufficient normal production conditions.
（6）The present embodiment adds coke 500kg, carborundum 350kg, and actual temperature raising amplitude is 76 DEG C.Molten steel amount is
72.5t, molten steel consumption 809kg/t.
Embodiment 6：The temperature raising method of the low molten steel consumption pneumatic steelmaking uses following concrete technologies.
（1）Molten iron and steel scrap condition：1296 DEG C, molten iron Si 0.58%, iron water amount 58.5t of molten iron temperature, steel scrap amount
20.8t；Converter terminal condition：1658 DEG C of target temperature, target C 0.07%.
（2）Outlet temperature is calculated as 1585 DEG C using automatic steel-making static calculation model, with target endpoint temperature phase
Than 73 ± 3 DEG C of temperature raising agent temperature raising need to be used.
（3）According to molten iron condition, temperature raising agent is that carborundum and coke are arranged in pairs or groups, and coke heating efficiency is by 6.4 DEG C/kg, carbonization
Silicon is by 9.0 DEG C/kg, temperature raising temperature by 70 DEG C of calculating；Coke addition=0.4 × 70/6.4 × (58.5+20.8)=346.9kg,
Silicon carbide addition=0.6 × 70/9.0 × (58.5+20.8)=370kg, coke addition round value 345kg, and carborundum adds
Measure value 370kg.
（4）Blown using conventional oxygen rifle, add carborundum and coke in converting process in good time, ensure that converting process is put down
Surely, slugging works well.Carborundum is after converter first slag is formed（Open about 4min after blowing）Start to be added portionwise, every batch of addition is not
More than 150kg, 1~1.5min of time interval of adjacent two batch of material, 20~30s rifle positions improve 50~100mm before being added per batch of material,
Rifle position is restored in 8~10 after addition, coke adds 100kg in Primary period, and remaining is added in blowing mid-term, addition
Respectively 120kg, 125kg, coke addition opportunity are placed on carborundum and added between 30~45s of completion；Above-mentioned carborundum and coke
All added within oxygen blast 10min.
（5）The present embodiment blowing oxygen quantity 3962Nm3, 1657 DEG C of outlet temperature, actual temperature raising amplitude is 72 DEG C, terminal C
0.075%, terminal composition is qualified, meets normal production conditions.
（6）The present embodiment adds coke 345kg, carborundum 370kg, and actual temperature raising amplitude is 72 DEG C.Molten steel amount is
72.6t, molten steel consumption 805kg/t.
Embodiment 7：The temperature raising method of the low molten steel consumption pneumatic steelmaking uses following concrete technologies.
（1）Molten iron and steel scrap condition：1299 DEG C, molten iron Si 0.63%, iron water amount 58.8t of molten iron temperature, steel scrap amount
20.6t；Converter terminal condition：1655 DEG C of target temperature, target C 0.07%.
（2）Outlet temperature is calculated as 1578 DEG C using automatic steel-making static calculation model, with target endpoint temperature phase
Than 77 ± 3 DEG C of temperature raising agent temperature raising need to be used.
（3）According to molten iron condition, temperature raising agent is that carborundum and coke are arranged in pairs or groups, and coke heating efficiency is by 6.4 DEG C/kg, carbonization
Silicon is by 8.7 DEG C/kg, temperature raising temperature by 78 DEG C of calculating；Coke addition=0.6 × 78/6.4 × (58.8+20.6)=580.6kg,
Silicon carbide addition=0.4 × 78/8.7 × (58.8+20.6)=287.4kg, coke addition round value 580kg, and carborundum adds
Enter to measure whole value 290kg.
（4）Blown using conventional oxygen rifle, add carborundum and coke in converting process in good time, ensure that converting process is put down
Surely, slugging works well.Carborundum is after converter first slag is formed（Open about 4min after blowing）Start to be added portionwise, every batch of addition is not
More than 150kg, 1~1.5min of time interval of adjacent two batch of material, 20~30s rifle positions improve 50~100mm before being added per batch of material,
Rifle position is restored in 8~10 after addition, coke adds 120kg in Primary period, and remaining is added portionwise in blowing mid-term, burnt
Charcoal addition opportunity is placed on carborundum and added between 30~45s of completion；Above-mentioned carborundum and coke are whole within oxygen blast 10min
Add.
（5）The present embodiment blowing oxygen quantity 3962Nm3, 1654 DEG C of outlet temperature, actual temperature raising amplitude is 76 DEG C, terminal C
0.08%, terminal composition is qualified, meets normal production conditions.
（6）The present embodiment adds coke 580kg, carborundum 290kg, and actual temperature raising amplitude is 76 DEG C.Molten steel amount is
72.3t, molten steel consumption 813kg/t.
Claims (6)
- A kind of 1. temperature raising method of low molten steel consumption pneumatic steelmaking, it is characterised in that：Using coke and/or carborundum supplement molten bath Heat；Coke is calculated by 6.2~6.5 DEG C/kg of ton steel heating efficiency and added, and coke usage amount≤1000kg/ stoves；Carborundum is pressed 8.6~9.1 DEG C/kg of ton steel heating efficiency, which is calculated, to be added, and carborundum usage amount≤500kg/ stoves；As molten iron Si≤0.4wt% When, preferentially using carborundum；During molten iron Si >=0.65wt%, preferentially using coke；During molten iron 0.4wt% ＜ Si ＜ 0.65wt%, make Coordinated with coke, carborundum and carry out temperature raising.
- 2. the temperature raising method of low molten steel consumption pneumatic steelmaking according to claim 1, it is characterised in that：Use coke, carbon When SiClx coordinates progress temperature raising, coke is calculated by the 40%~60% of the temperature raising temperature difference and added.
- 3. the temperature raising method of low molten steel consumption pneumatic steelmaking according to claim 1, it is characterised in that：The carborundum exists Converter first slag starts to be added portionwise after being formed, and every batch of addition is no more than 150kg, and the adjacent time inter between batch of material is not less than 1min, oxygen blast 10min and within all add.
- 4. the temperature raising method of low molten steel consumption pneumatic steelmaking according to claim 3, it is characterised in that：The carborundum is every Rifle position improves 50~100mm before batch of material adds.
- 5. the temperature raising method of the low molten steel consumption pneumatic steelmaking according to claim 1-4 any one, it is characterised in that： The coke Primary period add 100~150kg, remaining blowing mid-term add, oxygen blast 10min and within all add.
- 6. the temperature raising method of low molten steel consumption pneumatic steelmaking according to claim 5, it is characterised in that：Using coke and carbon During SiClx, the addition time of blowing mid-term coke is 30~45s after carborundum addition.
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108676946A (en) * | 2018-06-14 | 2018-10-19 | 邯郸钢铁集团有限责任公司 | A kind of whole process reduces the smelting process of molten steel consumption |
| CN109136451A (en) * | 2018-08-13 | 2019-01-04 | 林州凤宝管业有限公司 | A kind of drop iron loss method |
| CN110241283A (en) * | 2019-06-13 | 2019-09-17 | 首钢集团有限公司 | A kind of converter of desulfurization slag iron utilizes method |
| CN110396566A (en) * | 2019-07-26 | 2019-11-01 | 首钢集团有限公司 | A kind of method that desulfurization slag iron is eaten in converter time |
| CN112111622A (en) * | 2019-06-21 | 2020-12-22 | 上海梅山钢铁股份有限公司 | Blowing method for converter with low molten iron consumption |
| CN115537491A (en) * | 2022-07-29 | 2022-12-30 | 马鞍山钢铁股份有限公司 | Converter blowing method for low-temperature low-silicon molten iron |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1068595A (en) * | 1992-05-20 | 1993-02-03 | 李景林 | Top blowing oxygen is made steel novel temperature raising agent |
| CN102399932A (en) * | 2010-09-16 | 2012-04-04 | 鞍钢股份有限公司 | Method for reducing converter hot metal single consumption |
| CN102443674A (en) * | 2011-12-08 | 2012-05-09 | 攀枝花钢城集团有限公司 | Silicon carbide pellet and purpose of pellet as temperature improving agent in converter smelting process |
-
2017
- 2017-09-20 CN CN201710850784.0A patent/CN107641676B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1068595A (en) * | 1992-05-20 | 1993-02-03 | 李景林 | Top blowing oxygen is made steel novel temperature raising agent |
| CN102399932A (en) * | 2010-09-16 | 2012-04-04 | 鞍钢股份有限公司 | Method for reducing converter hot metal single consumption |
| CN102443674A (en) * | 2011-12-08 | 2012-05-09 | 攀枝花钢城集团有限公司 | Silicon carbide pellet and purpose of pellet as temperature improving agent in converter smelting process |
Non-Patent Citations (1)
| Title |
|---|
| 池震宇等: "碳化硅的冶金性能及其在钢铁工业中的应用", 《钢铁研究》 * |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108676946A (en) * | 2018-06-14 | 2018-10-19 | 邯郸钢铁集团有限责任公司 | A kind of whole process reduces the smelting process of molten steel consumption |
| CN109136451A (en) * | 2018-08-13 | 2019-01-04 | 林州凤宝管业有限公司 | A kind of drop iron loss method |
| CN109136451B (en) * | 2018-08-13 | 2020-07-14 | 林州凤宝管业有限公司 | Method for reducing iron loss |
| CN110241283A (en) * | 2019-06-13 | 2019-09-17 | 首钢集团有限公司 | A kind of converter of desulfurization slag iron utilizes method |
| CN112111622A (en) * | 2019-06-21 | 2020-12-22 | 上海梅山钢铁股份有限公司 | Blowing method for converter with low molten iron consumption |
| CN110396566A (en) * | 2019-07-26 | 2019-11-01 | 首钢集团有限公司 | A kind of method that desulfurization slag iron is eaten in converter time |
| CN115537491A (en) * | 2022-07-29 | 2022-12-30 | 马鞍山钢铁股份有限公司 | Converter blowing method for low-temperature low-silicon molten iron |
| CN115537491B (en) * | 2022-07-29 | 2024-04-12 | 马鞍山钢铁股份有限公司 | Converter converting method of low-temperature low-silicon molten iron |
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| CN107641676B (en) | 2019-08-09 |
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