CN1800418A - Highly effective metallurgical complexing agent for convertor (electric oven) and its preparation method and uses - Google Patents
Highly effective metallurgical complexing agent for convertor (electric oven) and its preparation method and uses Download PDFInfo
- Publication number
- CN1800418A CN1800418A CN 200510037631 CN200510037631A CN1800418A CN 1800418 A CN1800418 A CN 1800418A CN 200510037631 CN200510037631 CN 200510037631 CN 200510037631 A CN200510037631 A CN 200510037631A CN 1800418 A CN1800418 A CN 1800418A
- Authority
- CN
- China
- Prior art keywords
- convertor
- complexing agent
- highly effective
- slag
- add
- 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.)
- Granted
Links
Abstract
The invention relates to an admixture removing foreign matter of converting process in the field of fusion alloy treatment. It is formed by (by weight ratio) manganese oxide powdered ore 40-50%, iron powdered ore20-25%, dolomitic limestone powder 10-20%, silicon powder 4-6%, carbon powder 3-5%, catalyst 4-6% and some water; the complex agent is made by preparing for the material, stirring, adding catalyst and water to mix them, extrusion molding drying and sieving and so on.
Description
Technical field
The invention belongs to the processing of fusion class alloy, relate in particular to the interpolation treatment agent of commentaries on classics () stove steel-making, remove impurity.
Background technology
As everyone knows, the main task of steel-making is exactly according to the needs of institute's steelmaking kind the content of the carbon in the pig iron and other element to be reduced or is increased to the scope of regulation.Sulphur in the molten iron (S) and phosphorus (P) element are deleterious to steel generally speaking, in steelmaking process, must remove as far as possible.For this reason, must in steel melting furnace, add promotionization slag, slag making material.In the prior art, fluorite (CaF
2) change slag, effect is better, is limited to environmental protection, bans use of; Now materials such as Wingdale, iron scale, iron ore, steel-smelting sewage sludge pelletizing that adopt more, its being of defective slag speed is slow, the slag fusing is bad, mobile poor, " returning dried " appears in most of heats, or because of adjusting (FeO) content in the rifle position increase slag, misoperation and cause splash, desulfurization (S), dephosphorization (P) weak effect are particularly smelted the high-quality steel grade and more can't be satisfied desulfurization (S), dephosphorization (P) requirement.Cause duration of blast to be spun out, production efficiency is low, blows and decreases height, and furnace charge consumption and oxygen rifle consume high, and lining erosion is serious, and splash has worsened production environment, also easily brings unsafe factor.
Summary of the invention
In order to overcome the defective that prior art exists, the purpose of this invention is to provide a kind of product performance stable, cheap, change that slag speed is fast, desulfurization (S) and dephosphorization (P) effect are remarkable, can shorten duration of blast and can avoid commentaries on classics () the stove highly effective metallurgical complexing agent for convertor of steel melting furnace splash.
Another object of the present invention provides the preparation method of a kind of commentaries on classics of the present invention () stove highly effective metallurgical complexing agent for convertor.
A further object of the invention provides the application method of commentaries on classics of the present invention () stove highly effective metallurgical complexing agent for convertor.
Changeing the metallurgical efficient recombiner of () stove is made up of following component and content by weight percentage:
Manganese oxide powder 40-50%
Powdered iron ore 20-25%
Ground dolomite 10-20%
Silica flour 4-6%
Carbon dust 3-5%
Binding agent 4-6%
Water is an amount of
Above-mentioned oxidation manganese powder manganese (TMn) grade 25-30%, powdered iron ore iron (TFe) grade 45-50%.Major ingredient is MnO, FeO, CaO in the efficient recombiner of commentaries on classics () stove, and the effect division in converter smelting is as follows:
The initial stage of bessemerizing adds recombiner, can make (FeO) content in the increase initial stage slag, and FeO, CaO are the prerequisites of converter dephosphorization (P).
Help the removal of phosphorus in the steel (P).
Can make MnO content increase in the slag, generate low-melting tephroite, fully dwindle Ca
2SiO
4, Ca
3SiO
4Phase region, make slag keep evenly liquid in very wide temperature range.Studies show that the slag that contains 1% (MnO), open blow the back 3.5min dystectic Ca will appear in a large number
2S, Ca
3S, and contain the slag of 15% (MnO) holds and just Ca can occur after blowing 6-7min
2S, Ca
3S, therefore high MnO slag can delay Ca
2S, Ca
3The generation of S has improved change slag speed, helps the initial stage slag and forms rapidly.Bessemerize mid-term, MnO, FeO content height in the slag, promotionization slag, reduction slag viscosity, the dilution slag, slag fluidity is good and even, can relax " returning dried " phenomenon, can also avoid in the prior art because of adjusting FeO, the improper splash phenomenon that causes of rifle bit manipulation in the slag.(MnO) content height in the slag can improve the partition ratio of sulphur (S), and containing (Mn) in the slag increases, and makes that (O) reduces in the steel, promotes desulfurization (S); (MnO) content improves in the slag, helps desulfurization (S).
Bessemerize the later stage, (MnO) content improves in the slag, and then residual manganese content raises in the steel because the reduction of MnO makes when blow end point.
Ground dolomite in the recombiner is the content that increases CaO and MgO.
The adding of silicon can make silicon and manganese DIRECT ALLOYING.
The adding of carbon is the content that can improve residual manganese in the steel.
Binding agent comprises dextrin, terra alba, cement, bubble flower alkali.Binding agent and an amount of water play bonding, solidification when each component is made ball, cured strength can reach 450-500N/.
For making the solid materials mixing, be beneficial to and use pellet that enough intensity is arranged, the particle diameter of above-mentioned material, powdered iron ore is 0-3mm, the surplus 0-2mm that is all.
Prepare the method for commentaries on classics of the present invention () stove highly effective metallurgical complexing agent for convertor, carry out according to the following steps:
A, get the raw materials ready: the solid materials fragmentation, particle diameter: powdered iron ore is the surplus 0-2mm that is all of 0-3mm;
B, batching: prepare burden by above-mentioned each weight percentages of components;
C, mixing: press general method elder generation stirring and evenly mixing, add an amount of water, continue to stir into the wet feed shape;
D, make ball: wet feed is pressed into spherule through ball press;
E, oven dry, curing;
F, screening, pack.
More than each step under normal temperature, normal pressure, carry out.
The application method of commentaries on classics of the present invention () stove highly effective metallurgical complexing agent for convertor.It is that steel per ton adds 10-25kg that highly effective metallurgical complexing agent for convertor adds total amount, adds at twice; The 1/2-3/5 that adds ton steel total amount first with first slag charge; For the second time add rest part after blowing 3min opening; When in converting process, " returning dried " phenomenon occurring, add an amount of commentaries on classics () stove highly effective metallurgical complexing agent for convertor to adjust slag viscosity, the dilution slag.
Commentaries on classics of the present invention () stove highly effective metallurgical complexing agent for convertor has possessed commentaries on classics () stove and has made steel the material of necessary promotion slag, slag making, each reasonable mixture ratio of components, and effect is complemented each other; Preparation equipment is simple, work simplification, cost are low, the pellet stable performance, and the intensity height, easy to use; Result of use is good, and is on probation in converter steelmaking, has that slagging is fast, duration of blast shortens; The converter stable operation does not have " returning dried " and splash phenomenon and takes place, and desulfurization (S) and dephosphorization (P) effect are remarkable, improve the residual manganese of terminal point (Mn) content; Reduce the consumption of iron and steel stock, lime and silicomanganese, improved output of steel.
Embodiment
Further specify the present invention below by embodiment and commerical test.
Under normal temperature, normal pressure, press specified component and content in the table 1 respectively, place stirrer to stir, be mixed into dry mix manganese oxide powder, powdered iron ore, ground dolomite, carbon dust, silica flour; Binding agent is added in the dry powder, add an amount of water, continue stirring and evenly mixing and become wet compound; The compound that will wet places ball press, is pressed into spherule; Oven dry, curing; Screening, pack.Repeat repeatedly, it the results are shown in table 1, the table 2.
Table 1
Table 2
| Embodiment | Effect | ||||
| Q | α | W | T | P | |
| 1 | 600 | 0.021 | 1300 | 1-2 | 30-50 |
| 2 | 620 | 0.025 | 1500 | 1-2 | 30-50 |
| 3 | 650 | 0.030 | 1800 | 1-2 | 30-50 |
| 4 | 670 | 0.050 | 2000 | 1-2 | 30-50 |
| 5 | 700 | 0.070 | 2500 | 1-2 | 30-50 |
| 6 | 720 | 0.071 | 2650 | 1-2 | 30-50 |
| 7 | 750 | 0.076 | 2800 | 1-2 | 30-50 |
| 8 | 800 | 0.075 | 2500 | 1-2 | 30-50 |
Table 3
| Heat (batch) number | Lime adding amount (kg) | Metallurgical complexing agent for convertor adds (kg), joining day and quantity | Oxygen supply time (min) | The molten steel composition | Remarks | |||||
| C％ | S％ | Mn％ | P％ | Temperature | ||||||
| 2-1549 | 5000 | Open to blow and add 1000kg with hopper lime | 15 | One falls terminal point | 0.05 0.05 | 0.063 0.037 | 0.05 0.03 | 0.009 0.006 | 1631 | First stove behind the fettling, no splash |
| 2-155 | 5000 | Open to blow and add 1000kg with hopper lime | 14 | One falls | 0.09 | 0.045 | 0.12 | 0.12 | 1654 | No splash |
| 2-1551 | 5000 | Open to blow and add 1000kg with hopper lime | 14 | One falls | 0.09 | 0.052 | 0.11 | 0.02 | 1620 | No splash |
| 2-1552 | 5000 | Open to blow and add 1000kg with hopper lime | 12 | One falls | 0.09 | 0.048 | 0.1 | 0.019 | 1621 | No splash |
| 2-1553 | 5000 | Open to blow and add 1000kg with hopper lime | 12 | One falls | 0.09 | 0.048 | 0.14 | 0.021 | 1640 | |
| 1-2393 | 5000 | Open to blow and add 1000kg with hopper lime | 15 | One falls | 0.06 | 0.15 | 0.033 | 1700 | ||
| 1-2394 | 5000 | Open to blow and add 1000kg with hopper lime | 14 | One falls | 0.04 | 0.05 | 0.006 | 1631 | No splash | |
| 1-2395 | 5000 | Do not add | 14 | One falls | 0.07 | 0.043 | 0.11 | 0.021 | 1690 | |
| 1-2396 | 5000 | Do not add | 14 | One falls | 0.09 | 0.044 | 0.15 | 0.034 | 1695 | |
| 1-2397 | 5000 | Do not add | 14 | One falls | 0.08 | 0.043 | 0.16 | 0.033 | 1690 | |
| 2-1565 | 4000 | Do not add | 14 | One falls | 0.15 | 0.042 | 0.2 | 0.025 | 1713 | |
| 2-1566 | 4000 | Do not add | 16 | One falls | 0.09 | 0.055 | 0.22 | 0.047 | 1745 | |
| 2-1568 | 5000 | Open to blow and added 600kg in 3 minutes | 15 | One falls | 0.06 | 0.054 | 0.11 | 0.015 | 1644 | No splash |
| 2-1569 | 5000 | Open to blow and add 400kg and add 300kg in the time of 4 minutes | 13 | One falls terminal point | 0.17 0.06 | 0.042 0.035 | 0.15 0.08 | 0.013 0.009 | 1644 | No splash |
| 2-1570 | 4000 | Open to blow and add 800kg and add 200kg in the time of 4 minutes | 13 | One falls | 0.13 | 0.039 | 0.14 | 0.009 | 1653 | The molten iron band quantity of slag is excessive, the later stage slag that overflows |
| 2-1571 | 4000 | Open to blow and add 600kg | 13 | One falls | 0.12 | 0.035 | 0.17 | 0.014 | 1692 | No splash |
| 2-1580 | 4600 | Do not add | 14 | One falls | 0.08 | 0.031 | 0.12 | 0.023 | 1666 | |
| 2-1581 | 2600 | Open and blow, open and blow 4 minutes adding 300kg with first lime adding 400kg | 13 | One falls | 0.16 | 0.033 | 0.14 | 0.015 | 1644 | Stay the quantity of slag bigger in the stove |
| 2-1582 | 2800 | Open to blow and added 300kg in 2 minutes and open to blow and added 300kg in 4 minutes | 13 | One falls | 0.14 | 0.037 | 0.16 | 0.042 | 1626 | No splash |
In the table: (Mn) be the grade of (Mn) in the manganese oxide material; (%) be the weight percent of each component materials in changeing () stove highly effective metallurgical complexing agent for convertor;
(TFe) be full iron grade in the powdered iron ore;
Q---50 tons of converter recombiners add total amount (kg)
α---residual manganese (Mn) increment rate (%) in the terminal point steel
W---the ton steel is saved slag making material (lime) (kg)
T---shorten duration of blast (min)
P---dephosphorization (P) raising rate (%)
Change the efficient recombiner commerical test of () stove situation
In December, 2004, steel mill 2
#45 tons of converter nominal capacities, continuous 14 heats change () stove highly effective metallurgical complexing agent for convertor application test, Zong add-on 15-20kg/ ton steel adds 10-15kg/ ton steel with first slag charge for the first time; Open for the second time and add 5-6kg/ ton steel after blowing 3min, the data of using the test number that changes () stove highly effective metallurgical complexing agent for convertor and not adding the contrast heat of commentaries on classics () stove highly effective metallurgical complexing agent for convertor are listed in the table 3.
Adding the advantage of changeing () stove highly effective metallurgical complexing agent for convertor when bessemerizing from correlation data as can be seen, is:
1, change slag time shortening 1-2min, change the slag effect and obviously improve, the rare good fluidity of slag, converting process is steady, does not have " returning dried " and splash phenomenon, has reduced the slag making material and has consumed 2/5;
2, under high phosphorus (P) molten iron situation, terminal point (P) content comparison reduces 30-50% than heat, reduces the number of times of re-blowing that exceeds standard and cause because of (P), reduce oxygen and consume and slag making material consumption, director lining life;
3, duration of blast shortens 1-2, has improved production efficiency;
4, desulfurization (S) effect is obvious, the test heat one or terminal point sulphur (S) content of re-blowing all reach the steel grade requirement, reduced the number of times of re-blowing, improved terminal point sulphur (S) qualification rate;
5, converter does not have splash, and iron and steel stock consumption reduces, and has avoided the generation of accident;
6, one fall residual manganese (Mn) content and increase 0.02-0.05%, reduced the consumption of alloy.
Claims (6)
1, change () stove highly effective metallurgical complexing agent for convertor, this recombiner is composed of the following components by weight percentage:
Manganese oxide powder 40-50%
Powdered iron ore 20-25%
Ground dolomite 10-20%
Silica flour 4-6%
Carbon dust 3-5%
Binding agent 4-6%
Water is an amount of
2, according to the described commentaries on classics of claim 1 () stove highly effective metallurgical complexing agent for convertor, the manganese grade that it is characterized in that manganese oxide powder is 25-30%.
3,, it is characterized in that iron content (TFe) grade of powdered iron ore is 45-50% according to the described commentaries on classics of claim 1 () stove highly effective metallurgical complexing agent for convertor.
4, according to the described commentaries on classics of claim 1 () stove highly effective metallurgical complexing agent for convertor, it is characterized in that the particle diameter of each solid ingredient, powdered iron ore is 0-3mm, all the other are all 0-2mm.
5, the method for preparing the described commentaries on classics of claim 1 () stove highly effective metallurgical complexing agent for convertor is characterized in that this method may further comprise the steps composition:
A, get the raw materials ready: the solid materials fragmentation, particle diameter: powdered iron ore is the surplus 0-2mm that is all of 0-3mm;
B, batching: prepare burden by above-mentioned each weight percentages of components;
C, mixing: press general method elder generation stirring and evenly mixing, add an amount of water and continue to stir into the wet feed shape;
D, make ball: wet feed footpath ball press is pressed into spherule;
E, oven dry, curing;
F, screening, pack.
More than each step under normal temperature, normal pressure, carry out.
6, the application of the described commentaries on classics of claim 1 () stove highly effective metallurgical complexing agent for convertor, it is characterized in that changeing () stove highly effective metallurgical complexing agent for convertor adding total amount is that steel per ton adds 10-25kg, adds at twice; Add 10-15kg, the 1/2-3/5 of total amount with first slag charge first; For the second time add rest part after blowing 3min opening; When in converting process, " returning dried " phenomenon occurring, add an amount of () stove highly effective metallurgical complexing agent for convertor that changes to adjust slag viscosity, the dilution slag.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100376311A CN100351398C (en) | 2005-01-07 | 2005-01-07 | Highly effective metallurgical complexing agent for convertor (electric oven) and its preparation method and uses |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100376311A CN100351398C (en) | 2005-01-07 | 2005-01-07 | Highly effective metallurgical complexing agent for convertor (electric oven) and its preparation method and uses |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1800418A true CN1800418A (en) | 2006-07-12 |
| CN100351398C CN100351398C (en) | 2007-11-28 |
Family
ID=36810627
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2005100376311A Expired - Fee Related CN100351398C (en) | 2005-01-07 | 2005-01-07 | Highly effective metallurgical complexing agent for convertor (electric oven) and its preparation method and uses |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100351398C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102796847A (en) * | 2012-08-31 | 2012-11-28 | 宝山钢铁股份有限公司 | Premelting type molten iron slag regulator capable of reducing melting point of desulfurized molten iron slag |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1130828A (en) * | 1966-02-11 | 1968-10-16 | Tsnii Chernoj Metallurg | Method of making steel |
| CN1190507C (en) * | 2002-10-10 | 2005-02-23 | 吴光亮 | Composite ball rolls of manganese and its preparation method |
| JP2007109910A (en) * | 2005-10-14 | 2007-04-26 | Alps Electric Co Ltd | Electronic component |
-
2005
- 2005-01-07 CN CNB2005100376311A patent/CN100351398C/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102796847A (en) * | 2012-08-31 | 2012-11-28 | 宝山钢铁股份有限公司 | Premelting type molten iron slag regulator capable of reducing melting point of desulfurized molten iron slag |
Also Published As
| Publication number | Publication date |
|---|---|
| CN100351398C (en) | 2007-11-28 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN100342041C (en) | Method for making fluxed iron ore powder composite pellet | |
| CN100350060C (en) | High-efficient metallurgical refiner and preparation thereof | |
| CN101705333B (en) | Reduction and utilization method of dedusting ash of stainless steel | |
| CN103160643B (en) | The smelting process of a kind of carburelant and preparation method thereof and vanadium-bearing hot metal | |
| CN1229506C (en) | Melted iron dephosphorization agent using vessel slag as raw material | |
| CN106544464A (en) | Environment-friendly type splashing slag in converter material and preparation method thereof | |
| CN102925675B (en) | Method for recovering sludge from smelting ironmaking | |
| CN1328358C (en) | Coal briquettes for smelting reduction process, and method for manufacturing the same | |
| CN103343219B (en) | Method for producing sintered ore by using quick lime | |
| CN103131818B (en) | Slagging agent used in converter steelmaking, and preparation method thereof | |
| CN113005260B (en) | Converter composite heat generating agent and preparation method thereof | |
| CN100351398C (en) | Highly effective metallurgical complexing agent for convertor (electric oven) and its preparation method and uses | |
| CN111777422A (en) | Environment-friendly water-based large fabric for repairing converter | |
| CN1041328C (en) | Method of direct steel-smelting of cooled agglomerated pellet | |
| CN116042963A (en) | Method for preparing refining slag former from casting residues | |
| CN111575442B (en) | Low-melting-point high-efficiency desulfurizing agent and preparation and application methods thereof | |
| CN111500824B (en) | KR desulfurizer, preparation method thereof and desulfurization method adopting KR desulfurizer | |
| RU2352648C2 (en) | Charge for manufacturing of bricks for metallurgical production | |
| CN100350059C (en) | Dedusting magnesium iron ball and its application in electric furnace slag-making | |
| CN1818092A (en) | Preparation of steel-smelting carburant | |
| CN1027752C (en) | Electric furnace spraying and repairing material | |
| CN110551869A (en) | method for modifying slag in slag splashing stage of converter | |
| CN1778973A (en) | Composite ferromanganese mineral ball for steelmaking | |
| JP5006486B2 (en) | Method for producing a steelmaking slag hardened body | |
| CN1142296C (en) | Modified iron for electric furnace steel smelting and its smelting process |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| ASS | Succession or assignment of patent right |
Owner name: MAANSHAN ZHONGYE IRON & STEEL METALLURGY TECHNOLO Free format text: FORMER OWNER: HUANG ZHIYONG Effective date: 20060915 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20060915 Address after: 243000 No. 88 Hongqi South Road, Anhui, Ma'anshan Applicant after: Maanshan Zhongye Steel Metallurgy Technology Co., Ltd. Address before: 243000 No. 88 Hongqi South Road, Anhui, Ma'anshan Applicant before: Huang Zhiyong |
|
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: MA ANSHAN CHINA METALLURGICAL METALLURGICAL HI-TEC Free format text: FORMER NAME OR ADDRESS: MAANSHAN ZHONGYE IRON + STEEL METALLURGY TECHNOLOGICAL INDUSTRY CO., LTD. |
|
| CP01 | Change in the name or title of a patent holder |
Address after: No. 88 Hongqi South Road, Anhui, Ma'anshan Patentee after: Maanshan Zhongye Iron Steel Metallurgical High-Tech Co.,Ltd. Address before: No. 88 Hongqi South Road, Anhui, Ma'anshan Patentee before: Maanshan Zhongye Steel Metallurgy Technology Co., Ltd. |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20081219 Address after: No. 88 Hongqi South Road, Anhui, Ma'anshan Patentee after: Huang Zhiyong Address before: No. 88 Hongqi South Road, Anhui, Ma'anshan Patentee before: Maanshan Zhongye Iron Steel Metallurgical High-Tech Co.,Ltd. |
|
| ASS | Succession or assignment of patent right |
Owner name: HUANG ZHIYONG Free format text: FORMER OWNER: MA ANSHAN CHINA METALLURGICAL METALLURGICAL HI-TECH TECHNOLOGY CO.LTD. Effective date: 20081219 |
|
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20071128 Termination date: 20140107 |