CN108359758A - A kind of method and its application by desulfurization slag and the hot mixed processing of vessel slag - Google Patents
A kind of method and its application by desulfurization slag and the hot mixed processing of vessel slag Download PDFInfo
- Publication number
- CN108359758A CN108359758A CN201810164154.2A CN201810164154A CN108359758A CN 108359758 A CN108359758 A CN 108359758A CN 201810164154 A CN201810164154 A CN 201810164154A CN 108359758 A CN108359758 A CN 108359758A
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- China
- Prior art keywords
- slag
- desulfurization
- vessel
- mixing
- stewing
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Classifications
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B3/00—General features in the manufacture of pig-iron
- C21B3/04—Recovery of by-products, e.g. slag
- C21B3/06—Treatment of liquid slag
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B3/00—General features in the manufacture of pig-iron
- C21B3/04—Recovery of by-products, e.g. slag
- C21B3/06—Treatment of liquid slag
- C21B3/08—Cooling slag
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B2200/00—Recycling of non-gaseous waste material
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
Abstract
The present invention provides a kind of method and its application by desulfurization slag and the hot mixed processing of vessel slag, include the following steps：1) dry slag stewing hole is obtained；2) KR desulfurization slags the slag stewing is poured into cheat；3) liquid vessel slag is laid in KR desulfurization slags upper surface；4) KR desulfurization slags and liquid vessel slag in being cheated to the slag stewing carry out turning over slag mixing；5) slag stewing operation is carried out in the slag stewing is cheated, obtains mixing slag iron.FeO of the present invention in the carbon reduction high-temperature liquid state vessel slag in KR desulfurization slags, achieve the purpose that dilute slag iron sulfur content, cooling and has reduced sulfureted hydrogen gas concentration, and using both reaction reduce desulfurization slag iron plate and tie, can also cancel desulfurization slag band tank and fetch water technique, reduce desulfurization slag processing time.It is simple and practicable the present invention provides dephosphorized slag in a kind of complete three de- technique, the method for desulfurization slag and the hot mixed processing of vessel slag.
Description
Technical field
The invention belongs to slag treatment technical fields more particularly to a kind of by desulfurization slag and the hot mixed processing of vessel slag
Method and its application.
Background technology
With the increase of low-sulfur steel and ultralow-sulfur steel demand, more and more iron and steel enterprises begin to use molten iron to pre-process
Technique carries out pre- desulfurization process to molten iron.KR Desulfurization by stirring method technology is earliest by Japanese invention, and the 1970s, Wuhan Iron and Steel Plant was from new
Tie Co., Ltd. introduces, due to the advantages that its desulfuration efficiency is high, desulfurizing agent and resistance to material consumption are few and at low cost, for Ji steel, treasured
More iron and steel enterprises of the country such as steel, Shoudu Iron and Steel Co generally use, thus produce a large amount of desulfurization slags.Desulfurization slag has higher iron-holder,
Sulfur content is also very high simultaneously, generally reaches 2% or more, and being mixed into molten steel on a small quantity i.e. and can cause molten steel sulfur content, exceeded (converter adds
Enter 10kg/t slag irons, terminal S >=0.015% or more), converter current and sintering can not completely consume such desulfurization slag iron, deposit
The problem of production is more than consumption.And desulfurization slag is generally fetched water technique using band tank at present, hydrogen sulfide harmful gas concentration is higher in tank.
Further, since KR desulfurization slags iron-holder is high, iron compound is easily bonded as bulk shape with desulfurization slag, it is difficult to recycle.
Advanced technologies one of of the complete three de- technique as clean steel, be SUMITOMO CHEMICAL metal Wakayama factory, the Fushans NKK factory,
Shi Lan factories of Nippon Steel, Pu Xiang Guangyang factories of South Korea and Deng Duojia iron and steel enterprises of Shoudu Iron and Steel Co Jing Tang iron companies are used.However it is complete at present
Clinker such as the KR desulfurization slags, dephosphorized slag and conventional vessel slag more separately heat between slag that different phase generates in three de- techniques are stewing
Processing, causes the FeO in carbon and vessel slag in desulfurization slag to be not efficiently used, substantially all waste.
Invention content
In view of the above-mentioned drawbacks in the prior art, the main purpose of the present invention is to provide a kind of by desulfurization slag and vessel slag
The method and its application of hot mixed processing, the method have carried out secondary profit to the FeO in the carbon and vessel slag in desulfurization slag
With.
In order to achieve the above object, the present invention adopts the following technical scheme that：It is a kind of by desulfurization slag and the hot mixing of vessel slag
The method of processing, includes the following steps：
1) dry slag stewing hole is obtained；
2) KR desulfurization slags the slag stewing is poured into cheat；
3) liquid vessel slag is laid in KR desulfurization slags upper surface；
4) KR desulfurization slags and liquid vessel slag in being cheated to the slag stewing carry out turning over slag mixing；
5) slag stewing operation is carried out in the slag stewing is cheated, obtains mixing slag iron.
As a further preference, the slag stewing hole for obtaining drying, including：Dephosphorized slag or vessel slag are poured into slag stewing
Slag stewing hole is dried in hole.
As a further preference, the vessel slag is decarburization liquid slag or smelting endpoint slag.
As a further preference, the method further includes：After the step 4) turns over slag mixing, then KR desulfurization slags are poured into,
It uniformly sprawls, liquid vessel slag is then poured into KR desulfurization slags upper surface again, repeat the tiling, turn over slag hybrid manipulation.
As a further preference, the dosage for pouring into the KR desulfurization slags or liquid vessel slag every time is a heat.
Another object of the present invention, which also resides in, provides a kind of application mixing slag iron made from the above method, will be described
Mixing slag iron, which is added in converter, eat.
As a further preference, the application process includes：By the ferromagnetic choosing of the mixing slag, be divided into >=10mm grades and
＜ 10mm grades；The mixing slag iron of >=10mm grades and ＜ 10mm grades is added separately to be returned in the converter of different heats
It eats.
As a further preference, it after 10-130mm grade slag irons being carried out rod milling purification, is added to return in converter and eat.
As a further preference, the application process includes：It will be added in converter together with the mixing slag iron and steel scrap
Eat.
As a further preference, the dosage that the mixing slag iron is added to converter is 10kg/ tons of steel.
The beneficial effects of the invention are as follows：KR desulfurization slags are poured into dry slag stewing and cheated by the method for the present invention, then turn liquid
Clinker is poured slowly into desulfurization slag top and uniformly sprawls；And mix desulfurization slag and slag, make the two hot lower abundant
Reaction.FeO of the present invention in the carbon reduction high-temperature liquid state vessel slag in KR desulfurization slags, has reached dilution slag iron sulfur content, drop
Temperature and the purpose for reducing sulfureted hydrogen gas concentration, and reduce desulfurization slag iron plate using the two reaction and tie, it can also cancel desulfurization slag
Band tank is fetched water technique, and desulfurization slag processing time is reduced.The present invention provides dephosphorized slag, desulfurization slag in a kind of complete three de- technique and turn
The method of the hot mixed processing of clinker, it is simple and practicable.
Specific implementation mode
The present invention solves KR by providing a kind of method and its application by desulfurization slag and the hot mixed processing of vessel slag
The problem of desulfurization slag and vessel slag reuse.
In order to achieve the above object, the main thought of the embodiment of the present invention is：
The embodiment of the present invention includes the following steps the method for desulfurization slag and the hot mixed processing of vessel slag：
1) dry slag stewing hole is obtained；
2) KR desulfurization slags the slag stewing is poured into cheat；
3) liquid vessel slag is laid in KR desulfurization slags upper surface；
4) KR desulfurization slags and liquid vessel slag in being cheated to the slag stewing carry out turning over slag mixing；
5) slag stewing operation is carried out in the slag stewing is cheated, obtains mixing slag iron.
Above-mentioned steps 1) in, the dry moisture-free in slag stewing hole explodes when KR desulfurization slags being avoided to pour into；In the present embodiment
Dephosphorized slag or vessel slag can be poured into slag stewing hole, slag stewing hole is dried using its heat, resource is further utilized.
Above-mentioned steps 2) in, KR desulfurization slags are poured into the slag stewing hole, it is made uniformly to sprawl, KR desulfurization slags are existing KR
The desulfurization slag that Desulfurization by stirring method technology obtains, carbon content therein are about 3-10%.
Above-mentioned steps 3) in, liquid vessel slag is poured slowly into KR desulfurization slags top, it is made uniformly to sprawl；Above-mentioned liquid turns
The existing converter producing of clinker obtains, including decarburization liquid slag or conventional smelting endpoint slag, and FeO contents therein are about 20-
30%.
Above-mentioned steps 4) in, the devices such as hook machine can be used, KR desulfurization slags and liquid vessel slag are turned over into slag mixing.
In addition, can alternately pour into KR desulfurization slags and vessel slag in above-described embodiment successively, repetition sprawls, turns over slag mixing behaviour
Make, until slag stewing hole is filled up；Above-mentioned slag stewing operation and prior art are essentially identical, such as hot stewing processing.
The mixing slag iron obtained after the completion of above-mentioned slag stewing can be further applied to return in converter and be eaten, and be added and turned together with steel scrap
Stove, can be with 1:1 mass ratio replaces steel scrap, and can effectively reduce converter terminal sulfur content, and the FeO contents of tailings also effectively drop
It is low, thus, present invention method is provided the method for desulfurization slag, dephosphorized slag and the hot mixed processing of vessel slag, is solved
It the problem of KR desulfurization slag reuses, dilutes KR desulfurization slag iron sulfur contents, reaches converter and normal use is capable of in sintering
Condition；Secondary use has been carried out to the FeO in the carbon and vessel slag in desulfurization slag；Slag temperature reduces after being mixed due to the two,
It avoids during skimming due to the generation of hydraulic tank firing accident caused by slag temperature height, is easy to carry out taking off slag operation.
It is of the invention to reach the technological means and effect that predetermined goal of the invention is taken further to illustrate, below in conjunction with
Preferred embodiment, to the method and its application by desulfurization slag and the hot mixed processing of vessel slag proposed according to the present invention, tool
Body embodiment, feature and its effect are described in detail as after.In the following description, different " embodiment " or " embodiment "
What is referred to is not necessarily the same embodiment.In addition, the special characteristic or feature in one or more embodiments can be by any suitable forms
Combination.
The terms " and/or ", only a kind of incidence relation of description affiliated partner, indicates that there may be three kinds of passes
System, for example, A and/or B, is specifically interpreted as：Can include A and B simultaneously, can be with individualism A, it can also individualism
B can have above-mentioned three kinds of any case.
Embodiment 1
Prepare 1 slag stewing hole, pours into 1 tank dephosphorized slag in being cheated to slag stewing, uniformly sprawled dephosphorized slag with hydraulic pressure rake, utilize
Slag stewing hole bottom is dried in the drying of dephosphorized slag heat；After the completion of roasting hole, by 1 tank KR desulfurization slags (C:~3%) it pours into slag stewing hole,
Vessel slag is uniformly sprawled with hydraulic pressure rake, then pours into 1 tank liquid vessel slag (FeO:~20%), with hydraulic pressure rake by vessel slag
It uniformly sprawls, is then carried out turning over slag mixing with hook machine；Another 1 tank KR desulfurization slags are poured into, it is uniformly sprawled, then pours into another stove and turns
Clinker is similarly sprawled, turns over slag hybrid manipulation；Alternately pour into KR desulfurization slags and vessel slag successively again, repetition sprawls, turns over slag
Hybrid manipulation, until slag stewing hole is filled up, it is total to pour into 3 tank desulfurization slags and 3 tank vessel slags；The FeO of clinker is reduced to~13% or so.
Then slag stewing operation is carried out, slag iron (mixing slag iron) is obtained.Explanation：Slag composition content is all made of conventional X- Fluorometric assays.
Embodiment 2
Prepare 1 slag stewing hole, pours into 1 tank vessel slag in being cheated to slag stewing, uniformly sprawled vessel slag with hydraulic pressure rake, utilize
Slag stewing hole bottom is dried in the drying of vessel slag heat；After the completion of roasting hole, by 1 tank KR desulfurization slags (C:~3%) it pours into slag stewing hole,
Vessel slag is uniformly sprawled with hydraulic pressure rake, then pours into 1 tank liquid vessel slag (FeO:~20%), with hydraulic pressure rake by vessel slag
It uniformly sprawls, is then carried out turning over slag mixing with hook machine；Another 1 tank KR desulfurization slags are poured into, it is uniformly sprawled, then pours into another stove and turns
Clinker is similarly sprawled, turns over slag hybrid manipulation；Alternately pour into KR desulfurization slags and vessel slag successively again, repetition sprawls, turns over slag
Hybrid manipulation, until slag stewing hole is filled up, it is total to pour into 4 tank desulfurization slags and 4 tank vessel slags；The FeO of clinker is reduced to~12%.Then
Slag stewing operation is carried out, slag iron (mixing slag iron) is obtained.Explanation：Slag composition content is all made of conventional X- Fluorometric assays.
Application examples 1
By the slag iron after magnetic separation point >=10mm grades and ＜ 10mm grades after the completion of 1 slag stewing of above-described embodiment, wherein being more than
Equal to about 3 tons of 10mm grades slag iron, it is less than about 3 tons of 10mm grades slag iron, amounts to 6 tons；In different heats, (addition is respectively
10kg/ tons of steel, same as below) eat, converter terminal sulfur content situation is respectively：It is returned more than 10mm grade slag irons and eats heat
Converter terminal molten steel sulfur content is 0.012%, and eating heat converter terminal molten steel sulfur content less than 10mm grade slag irons time is
0.010%, the slag iron sulfur content after the hot mixed processing of above-described embodiment can meet the conventional steel grade production requirement of steel-making.
Application examples 2
After carrying out rod milling purification to the slag iron of the 10-130mm grades of above-described embodiment 1, converter time is added and eats, converter terminal
Sulfur content is 0.007%, and sulfur content further decreases.Tailings FeO contents that treated from it is original~19% be reduced to~
14%.In conclusion the embodiment of the present invention, which solves the problems, such as that the stewing tank of desulfurization slag is fetched water, easy tos produce bulk, while reducing tail
The FeO contents of slag, improve recovery rate of iron.Explanation：Slag composition content is all made of conventional X- Fluorometric assays.
Technical solution in above-mentioned the embodiment of the present application, at least has the following technical effect that or advantage：
KR desulfurization slags are poured into dry slag stewing and cheated by present invention method, are then poured slowly into liquid vessel slag de-
It simultaneously uniformly sprawls on sulphur slag top；And mix desulfurization slag and slag, make the two in hot lower abundant reaction.Present invention KR
The FeO in carbon reduction high-temperature liquid state vessel slag in desulfurization slag, has reached dilution slag iron sulfur content, cooling and has reduced hydrogen sulfide
The purpose of gas concentration, and using both reaction reduce desulfurization slag iron plate and tie, can also cancel desulfurization slag band tank and fetch water technique, reduce
Desulfurization slag processing time.The present invention provides dephosphorized slag, desulfurization slag and the hot mixed processings of vessel slag in a kind of complete three de- technique
Method, it is simple and practicable.
Although preferred embodiments of the present invention have been described, it is created once a person skilled in the art knows basic
Property concept, then additional changes and modifications may be made to these embodiments.So it includes excellent that the following claims are intended to be interpreted as
It selects embodiment and falls into all change and modification of the scope of the invention.Obviously, those skilled in the art can be to the present invention
Carry out various modification and variations without departing from the spirit and scope of the present invention.If in this way, these modifications and changes of the present invention
Within the scope of the claims of the present invention and its equivalent technology, then the present invention is also intended to exist comprising these modification and variations
It is interior.
Claims (10)
1. a kind of method by desulfurization slag and the hot mixed processing of vessel slag, it is characterised in that：Include the following steps：
1) dry slag stewing hole is obtained；
2) KR desulfurization slags the slag stewing is poured into cheat；
3) liquid vessel slag is laid in KR desulfurization slags upper surface；
4) KR desulfurization slags and liquid vessel slag in being cheated to the slag stewing carry out turning over slag mixing；
5) slag stewing operation is carried out in the slag stewing is cheated, obtains mixing slag iron.
2. the method according to claim 1 by desulfurization slag and the hot mixed processing of vessel slag, it is characterised in that：It is described to obtain
Dry slag stewing hole is obtained, including：Dephosphorized slag or vessel slag are poured into slag stewing hole, slag stewing hole is dried.
3. the method according to claim 1 by desulfurization slag and the hot mixed processing of vessel slag, it is characterised in that：The liquid
State vessel slag is decarburization liquid slag or smelting endpoint slag.
4. the method according to claim 1 by desulfurization slag and the hot mixed processing of vessel slag, it is characterised in that：The side
Method further includes：After turning over slag mixing in the step 4), then KR desulfurization slags are poured into, uniformly sprawls, then again fall liquid vessel slag
Enter KR desulfurization slags upper surface, repeats the tiling, turns over slag hybrid manipulation.
5. the method according to claim 1 or 4 by desulfurization slag and the hot mixed processing of vessel slag, it is characterised in that：Often
The secondary KR desulfurization slags or the dosage of liquid vessel slag poured into is a heat.
6. mixing the application of slag iron as made from any one of claim 1-5 the methods, it is characterised in that：By the mixing slag
Iron is added in converter and eat.
7. mixing the application of slag iron according to claim 6, it is characterised in that：The application process includes：By the mixing
Slag iron magnetic separation is divided into >=10mm grades and ＜ 10mm grades；The mixing slag iron of >=10mm grades and ＜ 10mm grades is added respectively
Enter into the converter of different heats and eat.
8. mixing the application of slag iron according to claim 7, it is characterised in that：The progress rod milling of 10-130mm grade slag irons is carried
After pure, it is added to return in converter and eats.
9. mixing the application of slag iron according to claim 6, it is characterised in that：The mixing slag iron is added together with steel scrap
It carries out back eating in converter.
10. mixing the application of slag iron according to claim 6, it is characterised in that：The mixing slag iron is added to the use of converter
Amount is 10kg/ tons of steel.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810164154.2A CN108359758A (en) | 2018-02-27 | 2018-02-27 | A kind of method and its application by desulfurization slag and the hot mixed processing of vessel slag |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810164154.2A CN108359758A (en) | 2018-02-27 | 2018-02-27 | A kind of method and its application by desulfurization slag and the hot mixed processing of vessel slag |
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| CN201810164154.2A Pending CN108359758A (en) | 2018-02-27 | 2018-02-27 | A kind of method and its application by desulfurization slag and the hot mixed processing of vessel slag |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109182648A (en) * | 2018-08-08 | 2019-01-11 | 鞍钢股份有限公司 | A method of sulphur free-cutting steel is produced using desulphurization and slag skimming iron |
| CN109897935A (en) * | 2019-03-19 | 2019-06-18 | 首钢集团有限公司 | A kind of cold method abandoned tundish covering flux and be used as converter slagging agent |
| CN113462840A (en) * | 2021-06-07 | 2021-10-01 | 吉立鹏 | Comprehensive utilization method of iron, heat and slag of converter slag and desulfurized slag |
| CN114959127A (en) * | 2021-02-22 | 2022-08-30 | 宝山钢铁股份有限公司 | Molten iron desulphurization slag and converter slag mixing modification co-processing method |
| CN114959156A (en) * | 2021-02-22 | 2022-08-30 | 宝山钢铁股份有限公司 | Method for thermal conditioning and modifying molten iron desulphurization slag |
| CN115125349A (en) * | 2022-06-29 | 2022-09-30 | 中冶华天工程技术有限公司 | Direct pressure heat braising intelligent treatment method for molten iron pretreatment desulphurization slag |
| CN115323096A (en) * | 2022-07-14 | 2022-11-11 | 首钢京唐钢铁联合有限责任公司 | Two-step molten iron desulphurization method |
| CN115418435A (en) * | 2022-08-04 | 2022-12-02 | 河钢乐亭钢铁有限公司 | Refining slag online modification method |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103014195A (en) * | 2012-06-14 | 2013-04-03 | 新疆八一钢铁股份有限公司 | Novel method for modification of KR desulfuration residue |
| CN104561445A (en) * | 2014-12-12 | 2015-04-29 | 新疆八一钢铁股份有限公司 | Modifying treatment method of blowing desulfurization slag |
| CN104561428A (en) * | 2014-12-11 | 2015-04-29 | 新疆八一钢铁股份有限公司 | Desulfurization recovery method of slag iron of blowing-process desulfurizing slag |
-
2018
- 2018-02-27 CN CN201810164154.2A patent/CN108359758A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103014195A (en) * | 2012-06-14 | 2013-04-03 | 新疆八一钢铁股份有限公司 | Novel method for modification of KR desulfuration residue |
| CN104561428A (en) * | 2014-12-11 | 2015-04-29 | 新疆八一钢铁股份有限公司 | Desulfurization recovery method of slag iron of blowing-process desulfurizing slag |
| CN104561445A (en) * | 2014-12-12 | 2015-04-29 | 新疆八一钢铁股份有限公司 | Modifying treatment method of blowing desulfurization slag |
Non-Patent Citations (1)
| Title |
|---|
| 中国钢铁工业协会信息统计部、中国钢铁工业协会《钢铁信息》编辑部编: "《2014年度钢铁信息论文集》", 28 February 2015 * |
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109182648A (en) * | 2018-08-08 | 2019-01-11 | 鞍钢股份有限公司 | A method of sulphur free-cutting steel is produced using desulphurization and slag skimming iron |
| CN109897935A (en) * | 2019-03-19 | 2019-06-18 | 首钢集团有限公司 | A kind of cold method abandoned tundish covering flux and be used as converter slagging agent |
| CN114959127B (en) * | 2021-02-22 | 2023-08-11 | 宝山钢铁股份有限公司 | Molten iron desulfurization slag and converter slag mixing modification co-treatment method |
| CN114959127A (en) * | 2021-02-22 | 2022-08-30 | 宝山钢铁股份有限公司 | Molten iron desulphurization slag and converter slag mixing modification co-processing method |
| CN114959156A (en) * | 2021-02-22 | 2022-08-30 | 宝山钢铁股份有限公司 | Method for thermal conditioning and modifying molten iron desulphurization slag |
| CN114959156B (en) * | 2021-02-22 | 2023-08-11 | 宝山钢铁股份有限公司 | Method for thermal state tempering and modification of molten iron desulphurization slag |
| CN113462840B (en) * | 2021-06-07 | 2022-10-21 | 吉立鹏 | Comprehensive utilization method of iron, heat and slag of converter slag and desulfurized slag |
| CN113462840A (en) * | 2021-06-07 | 2021-10-01 | 吉立鹏 | Comprehensive utilization method of iron, heat and slag of converter slag and desulfurized slag |
| CN115125349A (en) * | 2022-06-29 | 2022-09-30 | 中冶华天工程技术有限公司 | Direct pressure heat braising intelligent treatment method for molten iron pretreatment desulphurization slag |
| CN115323096A (en) * | 2022-07-14 | 2022-11-11 | 首钢京唐钢铁联合有限责任公司 | Two-step molten iron desulphurization method |
| CN115323096B (en) * | 2022-07-14 | 2023-12-22 | 首钢京唐钢铁联合有限责任公司 | Two-step desulfurization method for molten iron |
| CN115418435A (en) * | 2022-08-04 | 2022-12-02 | 河钢乐亭钢铁有限公司 | Refining slag online modification method |
| CN115418435B (en) * | 2022-08-04 | 2023-08-25 | 河钢乐亭钢铁有限公司 | Refining slag online modification method |
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