CN104131136B - A kind of molten iron, molten steel desulfurizing material and preparation method thereof - Google Patents
A kind of molten iron, molten steel desulfurizing material and preparation method thereof Download PDFInfo
- Publication number
- CN104131136B CN104131136B CN201410409589.0A CN201410409589A CN104131136B CN 104131136 B CN104131136 B CN 104131136B CN 201410409589 A CN201410409589 A CN 201410409589A CN 104131136 B CN104131136 B CN 104131136B
- Authority
- CN
- China
- Prior art keywords
- magnesium
- silk
- surplus
- inner core
- metal
- 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.)
- Active
Links
Abstract
The invention discloses a kind of molten iron, molten steel desulfurizing material and preparation method thereof, belong to field of steel metallurgy.It is thread, is followed successively by inner core, magnesium ribbon, filler particles and steel band from inside to outside; The material of described inner core is magnesium silk or calcium silk, and wherein the composition of magnesium silk and massfraction are: Al:0.01 ~ 1.20%, Si:0 ~ 2.10%, Mn:0 ~ 0.8%, Fe:0.01 ~ 3.20%, and surplus is Mg; Composition and the massfraction of described calcium silk are: Al:0.40 ~ 1.80%, Si:0 ~ 1.20, Mn:0 ~ 0.60%, Fe:0.03 ~ 2.50%, and surplus is Ca; The composition of described magnesium ribbon and massfraction are: Al:0.1 ~ 1.5%, Si:0.1 ~ 1.5%, Fe:0.1 ~ 1.5%, and surplus is Mg.Add in iron liquid and molten steel, because of positive correlation effect, can improve reactive behavior, desulfuration efficiency significantly improves.
Description
Technical field
The invention belongs to field of steel metallurgy, specifically, relate to a kind of molten iron, molten steel desulfurizing material and preparation method thereof.
Background technology
Ferrous metallurgy aspect, in order to the degree making sulphur content in steel reach very low, reduce harmful over-all properties being mingled with and improving steel in steel, the method that people often adopt is: one is be optimized process to molten iron, one is carry out deep desulfuration to molten steel, existing material therefor and method have its shortcoming to be: the design of (one) sweetening agent is difficult to accomplish accurately, cause desulphurization cost and desulfurization precision widely different.(2) existing desulfurizing iron is exactly powder injection process and paddling process, needs several ten million yuan to drop into the installations and facilities that several hundred million unit is huge.Running cost is high simultaneously.(3) the existing Desulphuring Process of Molten Iron cycle is relatively long, and efficiency is relatively low, and sulfur removal technology control is not enough, and adaptability is wideless.(4) in molten steel, directly add existing sweetening agent, be difficult to accomplish the dark desulfurization of molten steel, desulfurization precision is also uncontrollable, the dark desulfurization of current molten steel all adopt ladle furnace concise come (its cycle is long, and cost is very high).
Mode about molten iron, molten steel desulfurizing has a lot, but effect is desirable all not to the utmost, such as China Patent No.: 201410140096.1, patent name is: sweetening agent and Adding Way thereof, this disclosure of the invention a kind of sweetening agent and Adding Way thereof, according to the alloy that the sweetening agent of this inventive embodiment is made up of the iron of the magnesium of 15wt% ~ 20wt%, the aluminium of 40wt% ~ 45wt% and 35wt% ~ 40wt%, it is 500 DEG C ~ 550 DEG C according to the fusing point of the sweetening agent of this invention.Be join in molten steel in line feeding mode when RH vacuum refinement according to the Adding Way of the sweetening agent of this invention, be processed into according to the sweetening agent of this invention the metal wire that diameter is 10mm ~ 15mm, add-on is 2 ~ 5kg/ ton steel.Sweetening agent according to this invention does not contain corrosive elements, reduces the temperature drop of molten steel to a certain extent, improves desulfurization degree.
For another example: China Patent No.: 201410118031.7, patent name is: a kind of method of top and bottom complex blowing molten iron pre-desulfurization in hot metal ladle, the equipment used in the method is primarily of top-blown powder tank, bottom blowing powder injection tank, hot metal ladle, top-blown spray gun, bottom blowing ventilated element forms, angle α=10 ~ 20 ° wherein kept between the rifle body of top-blown spray gun and hot metal ladle central axis, one end of top-blown spray gun is connected with top-blown powder tank, the other end of top-blown spray gun inserts the degree of depth of molten iron apart from hot metal ladle bottom surface 200 ~ 300mm, the muzzle of top-blown spray gun is centrally located on hot metal ladle central axis, the rifle body medullary ray of top-blown spray gun and bottom blowing ventilated element medullary ray are all in the same vertical elevation of hot metal ladle basal diameter, bottom blowing powder injection tank and bottom blowing ventilated element together with, bottom blowing ventilated element is centrally located at 1/2nd places of hot metal ladle bottom surface radius, use aforesaid device to take following method when carrying out molten iron pre-desulfurization: (1) top-blown spray gun take nitrogen as carrier, jetting pressure be 0.18 ~ 0.22MPa, nitrogen flow is ton iron 0.05 ~ 0.08Nm
3under the condition of/min, jet in molten steel with the winding-up intensity of ton iron 0.00 ~ 0.08kg/min by the magnesium powder in top-blown powder tank, magnesium powder winding-up amount is 0 ~ 0.5kg/t molten iron, and winding-up time 0 ~ 6min, powder to air ratio is about 1.0kg/Nm
3, (2) by bottom blowing powder injection tank, desulfurization powder winding-up is in hot metal ladle by bottom blowing ventilated element for bottom blowing nitrogen buffer gas, and jetting pressure 0.3 ~ 0.5MPa, nitrogen flow are ton iron 0.05 ~ 0.1Nm
3/ min, winding-up intensity is ton iron 0 ~ 0.4kg/min, and the winding-up amount of desulfurization powder is 0 ~ 4kg/t molten iron, and the winding-up time is 8 ~ 10min, and powder to air ratio is about 3kg/Nm
3.
All there is sweetening effectiveness difference, the problem of high material consumption in above two parts of patents, especially directly adds existing sweetening agent, and be difficult to accomplish the dark desulfurization of molten steel, desulfurization precision is also uncontrollable.
Summary of the invention
1. the problem that will solve
Be difficult to accomplish the dark desulfurization of molten steel for existing molten iron, molten steel desulfurizing existence, the problem of desulfurization precision also uncontrollable, high material consumption, the invention provides a kind of molten iron, molten steel desulfurizing material and preparation method thereof, it can improve reactive behavior, desulfuration efficiency significantly improves, and has simultaneously and consumes the features such as low, the quantity of slag is little.
2. technical scheme
In order to solve the problem, the technical solution adopted in the present invention is as follows:
A kind of molten iron, molten steel desulfurizing material, it is thread, is followed successively by inner core, magnesium ribbon, filler particles and steel band from inside to outside; The material of described inner core is magnesium silk or calcium silk, and wherein the composition of magnesium silk and massfraction are: Al:0.01 ~ 1.20%, Si:0 ~ 2.10%, Mn:0 ~ 0.8%, Fe:0.01 ~ 3.20%, and surplus is Mg; Composition and the massfraction of described calcium silk are: Al:0.40 ~ 1.80%, Si:0 ~ 1.20, Mn:0 ~ 0.60%, Fe:0.03 ~ 2.50%, and surplus is Ca; The composition of described magnesium ribbon and massfraction are: Al:0.1 ~ 1.5%, Si:0.1 ~ 1.5%, Fe:0.1 ~ 1.5%, and surplus is Mg; The composition of described steel band and mass percent are C:0.07 ~ 0.10%; Si :≤0.03%; Mn:0.21 ~ 0.60%; P :≤0.020%; S :≤0.025%; Al:0.03 ~ 0.06%; Cr :≤0.04%; Ni :≤0.01%; Cu :≤0.10%, surplus is Fe.
Preferably, the diameter of described inner core is 4-23mm, and the thickness of magnesium ribbon is 0.15-2.8mm, the particle diameter 0.1-4.5mm of filler particles, and the internal diameter of steel band is 8-28mm, and the thickness of steel band is 0.22 ~ 0.65mm.
Preferably, the composition of described filler particles is determined according to the material of inner core, and when the material of inner core is magnesium silk, in filler particles, the massfraction of Mg is 30 ~ 60%, and surplus is Ca; When the material of inner core is calcium silk, in filler particles, the massfraction of Mg is 50 ~ 85%, and surplus is Ca.
Preferably, the granularity of described filler particles is determined according to the material of inner core, and when the material of inner core is magnesium silk, the granularity of filler particles is 0.1 ~ 4.5mm; When the material of inner core is calcium silk, the granularity of filler particles is 0.1 ~ 3.5mm.
Preferably, Passivation Treatment is carried out on the surface of described inner core; Described filler particles is through Passivation Treatment.
A preparation method for molten iron, molten steel desulfurizing material, the steps include:
(1) starting material are selected: MAGNESIUM METAL or calcium metal; The composition of MAGNESIUM METAL and massfraction are: Al:0.01 ~ 1.20%, Si:0 ~ 2.10%, Mn:0 ~ 0.8%, Fe:0.01 ~ 3.20%, and surplus is Mg; The composition of calcium metal and massfraction are: Al:0.40 ~ 1.80%, Si:0 ~ 1.20, Mn:0 ~ 0.60%, Fe:0.03 ~ 2.50%, and surplus is Ca;
(2) MAGNESIUM METAL in step (1) and calcium metal are processed into rod type material respectively, again rod type material is adopted dedicated extruded molding device and technique, machine-shaping is MAGNESIUM METAL silk and calcium metal silk, its string diameter is ￠ 4-23mm, then MAGNESIUM METAL silk and calcium metal silk silicone oil passivator are carried out surface passivation;
(3) MAGNESIUM METAL is processed into flat type material, the composition of the MAGNESIUM METAL adopted and massfraction are: Al:0.1 ~ 1.5%, Si:0.1 ~ 1.5%, Fe:0.1 ~ 1.5%, and surplus is Mg; Again flat type magnesium material is processed into metal magnesium ribbon, the thickness of its magnesium ribbon is 0.15-2.8mm;
(4) metal MAG block and calcium metal block are mixed in proportion, when the material of inner core is magnesium silk, the massfraction of Mg is 30 ~ 60%, and surplus is Ca; When the material of inner core is calcium silk, the massfraction of Mg is 50 ~ 85%, and surplus is Ca, put into vacuum oven and be smelted into alloy block, again its alloy block is broken into the particle of particle diameter 0.1-4.5mm, and Passivation Treatment is carried out on its particle silicone oil passivator surface, obtain filler particles;
(5) selection component and mass percent are C:0.07 ~ 0.10%; Si :≤0.03%; Mn:0.21 ~ 0.60%; P :≤0.020%; S :≤0.025%; Al:0.03 ~ 0.06%; Cr :≤0.04%; Ni :≤0.01%; Cu :≤0.10%, surplus is the steel band of Fe;
(6) adopt the steel band in cored-wire unit step (5) to be undertaken coated by the magnesium ribbon in the filler particles in step (4), step (3) and the inner core in step (2), be overmolding to and be followed successively by the thread of inner core, magnesium ribbon, filler particles and steel band from inside to outside.
3. beneficial effect
Compared to prior art, beneficial effect of the present invention is:
(1) the present invention adopts MAGNESIUM METAL calcium matrix material simultaneously containing MAGNESIUM METAL and calcium metal two kinds of alkaline-earth metal, the composition of magnesium silk and massfraction are: Al:0.01 ~ 1.20%, Si:0 ~ 2.10%, Mn:0 ~ 0.8%, Fe:0.01 ~ 3.20%, surplus is Mg; The composition of calcium silk and massfraction are: Al:0.40 ~ 1.80%, Si:0 ~ 1.20, Mn:0 ~ 0.60%, Fe:0.03 ~ 2.50%, and surplus is Ca; The composition of magnesium ribbon and massfraction are: Al:0.1 ~ 1.5%, Si:0.1 ~ 1.5%, Fe:0.1 ~ 1.5%, and surplus is Mg; The composition of steel band and mass percent are C:0.07 ~ 0.10%; Si :≤0.03%; Mn:0.21 ~ 0.60%; P :≤0.020%; S :≤0.025%; Al:0.03 ~ 0.06%; Cr :≤0.04%; Ni :≤0.01%; Cu :≤0.10%, surplus is Fe, adds in iron liquid and molten steel simultaneously, and because of positive correlation effect, can improve reactive behavior, desulfuration efficiency significantly improves;
(2) preparation method of molten iron of the present invention, molten steel desulfurizing material can make the component proportions of MAGNESIUM METAL and calcium metal adjust in very wide scope, and its sulfur removal technology has adaptability widely, and desulfurization depth can accurately control;
(3) no matter molten iron of the present invention, molten steel desulfurizing material are molten iron pre-desulfurization, or the dark desulfurization of molten steel terminal, all can realize, and the Low Cost Mode consuming the feature such as low, the quantity of slag is little, iron loss is little, temperature drop is few runs;
(4) the huge change of molten iron of the present invention, molten steel desulfurizing material, to making installations and facilities drop into before dropping to more than 1/10th, decreasing running cost simultaneously, and avoiding incident equipment and process accident in operational process;
(5) operational process safety and environmental protection of the present invention, smoke dust, without dust, odorlessness, significantly improves execute-in-place environment;
(6) the multinomial metallurgical effects such as the present invention is in molten steel desulfurizing process, can obtain excellent desulfurization, deoxidation, purification steel night, than single desulfurization, deoxidation, Calcium treatment has more superiority.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
Embodiment
Describe the present invention below in conjunction with specific embodiment.
Embodiment 1
Prepare molten iron, molten steel desulfurizing material, the steps include:
(1) starting material are selected: MAGNESIUM METAL; The composition of MAGNESIUM METAL and massfraction are: Al:0.03%, Si:1.20%, Mn:0.3%, Fe:2.10%, and surplus is Mg; The composition of calcium metal and massfraction are: Al:0.7%, Si:0.30, Mn:0.30%, Fe:1.40%, and surplus is Ca;
(2) MAGNESIUM METAL in step (1) is processed into rod type material respectively, again rod type material is adopted dedicated extruded molding device and technique, machine-shaping is MAGNESIUM METAL silk, and its string diameter is ￠ 23mm, then MAGNESIUM METAL silk silicone grease 295-3D is carried out surface passivation;
(3) metal MAG block and calcium metal block are mixed in proportion, the massfraction of Mg is 30%, and surplus is Ca; Put into vacuum oven and be smelted into alloy block, then its alloy block is broken into the particle of particle diameter 0.1-4.5mm, and its particle silicone grease 295-3D passivator is carried out Passivation Treatment, obtain filler particles;
(4) selection component and mass percent are C:0.08%; Si:0.02%; Mn:0.37%; P:0.020%; S:0.021%; Al:0.05%; Cr:0.02%; Ni:0.01%; Cu:0.10%, surplus is the steel band of Fe;
(5) steel band in cored-wire unit step (4) is adopted to be undertaken coated by the inner core in the filler particles in step (3) and step (2), be overmolding to and be followed successively by the thread of inner core, filler particles and steel band from inside to outside, wherein the external diameter of steel band is 28mm, as shown in Figure 1.
The molten iron prepared by step (6), molten steel desulfurizing material regulate nominal capacity to be 220 tons of iron ladles, and hot metal composition: C:4.1%, Si:0.5%, Mn:0.3%, P:0.11%, S:0.13%, surplus is Fe.In Hot Metal Pretreatment, directly MAGNESIUM METAL calcium matrix material cored-wire is fed molten iron by feeding wire machine, wire-feeding velocity 120-150m/min, molten iron average desulfurization degree is 71.3%.
Embodiment 2
Prepare molten iron, molten steel desulfurizing material, the steps include:
(1) starting material are selected: calcium metal; The composition of calcium metal and massfraction are: Al:0.40%, Si:1.20, Mn:0.1%, Fe:2.50%, and surplus is Ca;
(2) calcium metal in step (1) is processed into rod type material respectively, again rod type material is adopted dedicated extruded molding device and technique, machine-shaping is MAGNESIUM METAL silk and calcium metal silk, and its string diameter is ￠ 4mm, then calcium metal silk methyl-silicone oil is carried out surface passivation;
(3) MAGNESIUM METAL is processed into flat type material, the composition of the MAGNESIUM METAL adopted and massfraction are: Al:0.1%, Si:1.5%, Fe:0.1%, and surplus is Mg; Again flat type magnesium material is processed into metal magnesium ribbon, the thickness of its magnesium ribbon is 2.8mm;
(4) metal MAG block and calcium metal block are mixed in proportion, the massfraction of Mg is 85%, and surplus is Ca, put into vacuum oven and be smelted into alloy block, again its alloy block is broken into the particle of particle diameter 0.1-3.5mm, and its particle methyl-silicone oil is carried out Passivation Treatment, obtain filler particles;
(5) selection component and mass percent are C:0.07%; Si:0.03%; Mn:0.21%; P:0.020%; S:0.025%; Al:0.06%; Cr:0.04%; Ni:0.01%; Cu:0.10%, surplus is the steel band of Fe;
(6) steel band in cored-wire unit step (5) is adopted to be undertaken coated by the magnesium ribbon in the filler particles in step (4), step (3) and the inner core in step (2), be overmolding to and be followed successively by the thread of inner core, magnesium ribbon, filler particles and steel band from inside to outside, thread external diameter equals 16min, as shown in Figure 1.
The molten iron prepared by step (6), molten steel desulfurizing material regulate nominal capacity to be 120 tons of iron ladles, hot metal composition: C:4.4%, Si:0.6%, Mn:0.45%, P:0.13%, S:0.11%.The molten iron directly step (6) prepared by feeding wire machine, molten steel desulfurizing composites cored-wire feeding molten iron, wire-feeding velocity 80 ~ 110m/min, molten iron average desulfurization degree is 69.7%.
Embodiment 3
Prepare molten iron, molten steel desulfurizing material, the steps include:
(1) starting material are selected: MAGNESIUM METAL and calcium metal; The composition of MAGNESIUM METAL and massfraction are: Al:1.20%, Si:0.1%, Mn:0.8%, Fe:0.01, and surplus is Mg; The composition of calcium metal and massfraction are: Al:0.40%, Si:1.20, Mn:0.60%, Fe:0.03, and surplus is Ca;
(2) MAGNESIUM METAL in step (1) and calcium metal are processed into rod type material respectively, again rod type material is adopted dedicated extruded molding device and technique, machine-shaping is MAGNESIUM METAL silk and calcium metal silk, its string diameter is ￠ 16mm, then MAGNESIUM METAL silk and calcium metal silk DRZ-1 heat-conducting silicone grease are carried out surface passivation;
(3) MAGNESIUM METAL is processed into flat type material, the composition of the MAGNESIUM METAL adopted and massfraction are: Al:1.5%, Si:0.1%, Fe:1.5%, and surplus is Mg; Again flat type magnesium material is processed into metal magnesium ribbon, the thickness of its magnesium ribbon is 0.15mm;
(4) metal MAG block and calcium metal block are mixed in proportion, when the material of inner core is magnesium silk, the massfraction of Mg is 50, and surplus is Ca; When the material of inner core is calcium silk, the massfraction of Mg is 60, and surplus is Ca, put into vacuum oven and be smelted into alloy block, again its alloy block is broken into the particle of particle diameter 0.1-3.5mm, and its particle DRZ-1 heat-conducting silicone grease is carried out Passivation Treatment, obtain filler particles;
(5) selection component and mass percent are C:0.10%; Si:0.01%; Mn:0.60%; P:0.010%; S:0.020%; Al:0.03%; Cr:0.04%; Ni:0.01%; Cu:0.08%, surplus is the steel band of Fe;
(6) steel band in cored-wire unit step (5) is adopted to be undertaken coated by the magnesium ribbon in the filler particles in step (4), step (3) and the inner core in step (2), be overmolding to and be followed successively by the thread of inner core, magnesium ribbon, filler particles and steel band from inside to outside, as shown in Figure 1.
The molten iron prepared by step (6), molten steel desulfurizing material regulate nominal capacity to be 70 tons of ladle, molten steel composition: C:0.22%, Si:0.53%, Mn:1.39%, P:0.022%, S:0.024%.Use molten iron, molten steel desulfurizing material prepared by step (6), directly molten steel is fed by feeding wire machine, wire-feeding velocity 110-130m/min, in molten steel, sulphur is all down to 0.008% when the material of inner core is magnesium silk, average desulfurization degree is 62.5%, and when the material of inner core is calcium silk, average desulfurization degree is 64%, have more superiority than single desulfurization, deoxidation, Calcium treatment, contrast cost significantly reduces.
Claims (5)
1. molten iron, a molten steel desulfurizing material, is characterized in that, it is thread, is followed successively by inner core, magnesium ribbon, filler particles and steel band from inside to outside; The material of described inner core is magnesium silk or calcium silk, and wherein the composition of magnesium silk and massfraction are: Al:0.01 ~ 1.20%, Si:0 ~ 2.10%, Mn:0 ~ 0.8%, Fe:0.01 ~ 3.20%, and surplus is Mg; Composition and the massfraction of described calcium silk are: Al:0.40 ~ 1.80%, Si:0 ~ 1.20, Mn:0 ~ 0.60%, Fe:0.03 ~ 2.50%, and surplus is Ca; The composition of described magnesium ribbon and massfraction are: Al:0.1 ~ 1.5%, Si:0.1 ~ 1.5%, Fe:0.1 ~ 1.5%, and surplus is Mg; The composition of described steel band and mass percent are C:0.07 ~ 0.10%; Si :≤0.03%; Mn:0.21 ~ 0.60%; P :≤0.020%; S :≤0.025%; Al:0.03 ~ 0.06%; Cr :≤0.04%; Ni :≤0.01%; Cu :≤0.10%, surplus is Fe; The composition of described filler particles is determined according to the material of inner core, and when the material of inner core is magnesium silk, in filler particles, the massfraction of Mg is 30 ~ 60%, and surplus is Ca; When the material of inner core is calcium silk, in filler particles, the massfraction of Mg is 50 ~ 85%, and surplus is Ca.
2. a kind of molten iron according to claim 1, molten steel desulfurizing material, is characterized in that, the diameter of described inner core is 4-23mm, the thickness of magnesium ribbon is 0.15-2.8mm, the particle diameter 0.1-4.5mm of filler particles, the internal diameter of steel band is 8-28mm, and the thickness of steel band is 0.22 ~ 0.65mm.
3. a kind of molten iron according to claim 1, molten steel desulfurizing material, is characterized in that, the granularity of described filler particles is determined according to the material of inner core, and when the material of inner core is magnesium silk, the granularity of filler particles is 0.1 ~ 4.5mm; When the material of inner core is calcium silk, the granularity of filler particles is 0.1 ~ 3.5mm.
4. a kind of molten iron according to claim 1, molten steel desulfurizing material, is characterized in that, Passivation Treatment is carried out on the surface of described inner core; Described filler particles is through Passivation Treatment.
5. a preparation method for molten iron, molten steel desulfurizing material, the steps include:
(1) starting material are selected: MAGNESIUM METAL or calcium metal; The composition of MAGNESIUM METAL and massfraction are: Al:0.01 ~ 1.20%, Si:0 ~ 2.10%, Mn:0 ~ 0.8%, Fe:0.01 ~ 3.20%, and surplus is Mg; The composition of calcium metal and massfraction are: Al:0.40 ~ 1.80%, Si:0 ~ 1.20, Mn:0 ~ 0.60%, Fe:0.03 ~ 2.50%, and surplus is Ca;
(2) MAGNESIUM METAL in step (1) and calcium metal are processed into rod type material respectively, again rod type material is adopted dedicated extruded molding device and technique, machine-shaping is MAGNESIUM METAL silk and calcium metal silk, its string diameter is ￠ 4-23mm, then MAGNESIUM METAL silk and calcium metal silk silicone oil passivator are carried out surface passivation;
(3) MAGNESIUM METAL is processed into flat type material, the composition of the MAGNESIUM METAL adopted and massfraction are: Al:0.1 ~ 1.5%, Si:0.1 ~ 1.5%, Fe:0.1 ~ 1.5%, and surplus is Mg; Again flat type magnesium material is processed into metal magnesium ribbon, the thickness of its magnesium ribbon is 0.15-2.8mm;
(4) metal MAG block and calcium metal block are mixed in proportion, when the material of inner core is magnesium silk, the massfraction of Mg is 30 ~ 60%, and surplus is Ca; When the material of inner core is calcium silk, the massfraction of Mg is 50 ~ 85%, and surplus is Ca, put into vacuum oven and be smelted into alloy block, again its alloy block is broken into the particle of particle diameter 0.1-4.5mm, and Passivation Treatment is carried out on its particle silicone oil passivator surface, obtain filler particles;
(5) selection component and mass percent are C:0.07 ~ 0.10%; Si :≤0.03%; Mn:0.21 ~ 0.60%; P :≤0.020%; S :≤0.025%; Al:0.03 ~ 0.06%; Cr :≤0.04%; Ni :≤0.01%; Cu :≤0.10%, surplus is the steel band of Fe;
(6) adopt the steel band in cored-wire unit step (5) to be undertaken coated by the magnesium ribbon in the filler particles in step (4), step (3) and the inner core in step (2), be overmolding to and be followed successively by the thread of inner core, magnesium ribbon, filler particles and steel band from inside to outside.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410409589.0A CN104131136B (en) | 2014-08-19 | 2014-08-19 | A kind of molten iron, molten steel desulfurizing material and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410409589.0A CN104131136B (en) | 2014-08-19 | 2014-08-19 | A kind of molten iron, molten steel desulfurizing material and preparation method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104131136A CN104131136A (en) | 2014-11-05 |
| CN104131136B true CN104131136B (en) | 2016-03-16 |
Family
ID=51803985
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410409589.0A Active CN104131136B (en) | 2014-08-19 | 2014-08-19 | A kind of molten iron, molten steel desulfurizing material and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104131136B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI570246B (en) * | 2015-04-07 | 2017-02-11 | China Steel Corp | Method for desulfurization of molten iron |
| CN112522541B (en) * | 2019-09-17 | 2022-03-18 | 东北大学 | Nickel-based alloy desulfurizing agent and preparation method thereof |
| CN111690789B (en) * | 2020-06-12 | 2021-08-24 | 江苏戴美特医疗科技有限公司 | Core-spun yarn with high yield and manufacturing method thereof |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19916235A1 (en) * | 1999-03-01 | 2000-09-07 | Odermath Stahlwerkstechnik | Filled wire for treating melts, especially of cast iron to obtain a spheroidal graphite structure, comprises a metal sheathed magnesium or deformable magnesium alloy core wire |
| CN2808926Y (en) * | 2005-02-21 | 2006-08-23 | 包头翌新冶金技术有限公司 | Magnesium-wire cladded wire |
| CN2883391Y (en) * | 2006-01-26 | 2007-03-28 | 包头翌新冶金技术有限公司 | Mg cored wire |
| CN201785437U (en) * | 2010-09-03 | 2011-04-06 | 安帝铁合金(天津)有限公司 | Novel middle thread of core-spun thread |
| CN102851446A (en) * | 2012-09-10 | 2013-01-02 | 上海盛宝冶金科技有限公司 | Multilayer-structured calcium-core wire, and manufacturing method and purpose thereof |
| CN103074467A (en) * | 2013-02-01 | 2013-05-01 | 浙江宝信新型炉料科技发展有限公司 | Solid metal magnesium alloy core-spun yarn for steelmaking desulfuration and manufacture method of solid metal magnesium alloy core-spun yarn |
| FR2997963B1 (en) * | 2012-11-09 | 2015-09-04 | Affival | OVEN WIRE FOR METALLURGICAL PROCESSING OF A FUSION METAL BATH AND METHOD THEREOF |
-
2014
- 2014-08-19 CN CN201410409589.0A patent/CN104131136B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19916235A1 (en) * | 1999-03-01 | 2000-09-07 | Odermath Stahlwerkstechnik | Filled wire for treating melts, especially of cast iron to obtain a spheroidal graphite structure, comprises a metal sheathed magnesium or deformable magnesium alloy core wire |
| CN2808926Y (en) * | 2005-02-21 | 2006-08-23 | 包头翌新冶金技术有限公司 | Magnesium-wire cladded wire |
| CN2883391Y (en) * | 2006-01-26 | 2007-03-28 | 包头翌新冶金技术有限公司 | Mg cored wire |
| CN201785437U (en) * | 2010-09-03 | 2011-04-06 | 安帝铁合金(天津)有限公司 | Novel middle thread of core-spun thread |
| CN102851446A (en) * | 2012-09-10 | 2013-01-02 | 上海盛宝冶金科技有限公司 | Multilayer-structured calcium-core wire, and manufacturing method and purpose thereof |
| FR2997963B1 (en) * | 2012-11-09 | 2015-09-04 | Affival | OVEN WIRE FOR METALLURGICAL PROCESSING OF A FUSION METAL BATH AND METHOD THEREOF |
| CN103074467A (en) * | 2013-02-01 | 2013-05-01 | 浙江宝信新型炉料科技发展有限公司 | Solid metal magnesium alloy core-spun yarn for steelmaking desulfuration and manufacture method of solid metal magnesium alloy core-spun yarn |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104131136A (en) | 2014-11-05 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101545066B (en) | Method for smelting H2S corrosion resistant petroleum casing pipe steel 110S | |
| CN104131136B (en) | A kind of molten iron, molten steel desulfurizing material and preparation method thereof | |
| CN102534120A (en) | Smelting process for production of super-low sulphur steel | |
| CN101798612B (en) | Process for washing, pre-desulfurizing and refining tapping steel slag of converter | |
| CN102586547B (en) | Production method for low-cost clean steel | |
| CN102268513A (en) | Method for improving castability of molten steel of medium and low carbon steel | |
| CN103614517A (en) | Low-cost deoxygenation method for low-aluminum medium-carbon steel | |
| CN107513598B (en) | A kind of molten iron tank deck bottom composite blowing sulfur method | |
| CN108085448A (en) | A kind of production method by continuous casting pattern smelting low-sulfur steel in converter directly | |
| CN102864282A (en) | Recarburization method for semi-steel desulfurization | |
| CN107099747B (en) | A kind of production technology for controlling acid-resistant pipeline steel Large Inclusions | |
| CN103540711B (en) | Method for simultaneously removing sulfur and phosphorus from semi-steel | |
| CN104561450B (en) | A kind of boracic H profile steel smelting synthetic slag and preparation method and application | |
| CN103484600B (en) | Anti-RH (Relative Humidity) resulfurization technology for ultralow-sulfur moderate-thickness plate steel in high-sulfur molten steel smelting | |
| CN102808061A (en) | Method for smelting nickel-containing steel by using low-nickel pig iron in converter | |
| CN101413044B (en) | Alloy addition method for improving yield of ferromolybdenum | |
| CN102230048A (en) | Composite desulfurizing agent for molten-iron furnace external refining and spraying | |
| CN105385809B (en) | A kind of sulfur-bearing molten iron desulfurizing method | |
| CN107385127B (en) | Improve the process of vanadium titano-magnetite blast furnace process slag iron separation | |
| CN104946850A (en) | Converter tapping slag washing method using low-Al alumina ball | |
| CN105274281A (en) | Method used for controlling boron content in steel accurately | |
| CN101648267B (en) | Method for gas seal protection casting of steel containing nitrogen | |
| CN101962704B (en) | Method for producing low-phosphorous low-sulfur micro carbon and low-carbon manganese silicon alloy by adopting specific core powder formula feeding wire | |
| CN102268505A (en) | Method for pre-desulfuration of molten iron in foundry ladle | |
| CN107287377A (en) | A kind of molten iron spraying desulfurization spraying composite desulfurizing agent and preparation method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |