CN107245550A - A kind of floride-free low titanium molten steel scavenger（Refine material）Preparation method - Google Patents
A kind of floride-free low titanium molten steel scavenger（Refine material）Preparation method Download PDFInfo
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- CN107245550A CN107245550A CN201710696763.8A CN201710696763A CN107245550A CN 107245550 A CN107245550 A CN 107245550A CN 201710696763 A CN201710696763 A CN 201710696763A CN 107245550 A CN107245550 A CN 107245550A
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- molten steel
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- floride
- free low
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Classifications
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
- C21C7/00—Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00
- C21C7/04—Removing impurities by adding a treating agent
- C21C7/06—Deoxidising, e.g. killing
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
- C21C7/00—Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00
- C21C7/04—Removing impurities by adding a treating agent
- C21C7/064—Dephosphorising; Desulfurising
- C21C7/0645—Agents used for dephosphorising or desulfurising
Abstract
The present invention relates to a kind of preparation method of floride-free low titanium molten steel scavenger (refining material), belong to nonmetallic materials deep process technology field.The preparation method is：Using at least one of natural wollastonite, quartz and calcium carbonate as raw materials melt, floride-free low titanium molten steel scavenger (refining material) is obtained.Floride-free low titanium molten steel scavenger (refining material) prepared by the present invention can be directly used for removal of impurities when steel grade is smelted, refining, clean molten steel；Floride-free low titanium molten steel scavenger (refining material) slagging is rapid, quick adsorption molten steel impurity, increases the mobility of molten steel, meanwhile, remove non-metallic inclusion, effective deoxidation in molten steel, promote desulfurization, be smelting special steel, the preferable liquid steel refining material of clean steel.
Description
Technical field
The present invention relates to a kind of preparation method of floride-free low titanium molten steel scavenger (refining material), belong to nonmetallic materials and add deeply
Work technical field.
Background technology
Wollastonite belongs to natural silicate minerals, chemical composition SiO2CaO, wherein SiO2Theoretical content 51.75%, CaO
Theoretical content 48.25%.Meanwhile, calcium carbonate mineral is after high-temperature fusion, and main chemical is CaO, quartzy mainization
Study point is SiO2, two kinds of raw mineral materials by proportioning components calculate and after high-temperature fusion, chemical composition and wollastonite into
Part is essentially identical, is all SiO2CaO, with identical chemical property.
Because natural wollastonite has stable chemical property and suitable basicity, thus it is used as the master of production refining material
Want raw material to be widely used in the fields such as metallurgy, be directly used in deoxidation of molten steel, the mobility of molten steel can be increased, while removing steel
Non-metallic inclusion in water, is smelting special steel, the preferable liquid steel refining material of clean steel.
At present, the refining material of in the market application is all to be formed with industrial mineral plus fluorite through fusing, still, among fluorite
Fluorine be harmful index, severe contamination environment in process of production, the refining material containing fluorine composition the country such as Japan and Korea S by
Forbid to use；And it is too high to refine Ti content in material, the refining material is caused to be not suitable for being used as TiO2It is required that strict special steel,
The smelting of mild steel and ultra-low-carbon steel.
The content of the invention
The present invention prepares floride-free low titanium molten steel scavenger (refining material) by using natural wollastonite, solves above-mentioned ask
Topic.
The invention provides a kind of preparation method of floride-free low titanium molten steel scavenger (refining material), the preparation method is：
Using at least one of natural wollastonite, quartz and calcium carbonate as raw materials melt, (the refining of floride-free low titanium molten steel scavenger is obtained
Material).
Natural wollastonite of the present invention is preferably that the content of calcium silicates is not less than 50%, and the content of titanium and titanium dioxide is small
In 0.08%, not fluorine-containing and calcirm-fluoride.
The content of quartz of the present invention preferably silica is more than 90%, and the content of titanium and titanium dioxide is less than
0.08%, not fluorine-containing and calcirm-fluoride.
Calcium carbonate of the present invention is preferably lime stone, calcite or lime；
The content of calcium carbonate is more than 90% in the lime stone, and the content of titanium and titanium dioxide is less than 0.08%, and is free of
Fluorine and calcirm-fluoride；
The content of calcium carbonate is more than 90% in the calcite, and the content of titanium and titanium dioxide is less than 0.08%, and is free of
Fluorine and calcirm-fluoride；
The content of calcium oxide is more than 70% in the lime, and the content of titanium and titanium dioxide is not fluorine-containing less than 0.08%
And calcirm-fluoride.
The granularity of natural wollastonite of the present invention is preferably 0.5-10cm.
Quartzy granularity of the present invention is preferably 0.5-10cm.
The granularity of calcium carbonate of the present invention is preferably 0.5-10cm.
Natural wollastonite of the present invention, the granularity of quartz and calcium carbonate are conducive to fast melt, reacted and reduce heat
Loss.
Raw material of the present invention is preferably by weight percentage, to be made up of following components：
Natural wollastonite 0-100%
Quartzy 0-75%
Calcium carbonate 0-75%.
The temperature of melting of the present invention is preferably 1300-1650 DEG C.
The present invention has the beneficial effect that：
1. the floride-free low titanium molten steel scavenger (refining material) that prepared by the present invention can be directly used for removal of impurities when steel grade is smelted, essence
Refining, clean molten steel；Floride-free low titanium molten steel scavenger (refining material) slagging is rapid, quick adsorption molten steel impurity, increases molten steel
Mobility, meanwhile, remove molten steel in non-metallic inclusion, effective deoxidation, promote desulfurization, be smelting special steel, clean steel reason
The liquid steel refining material thought.
2. the floride-free low titanium molten steel scavenger (refining material) for preparing of the present invention is not fluorine-containing or calcirm-fluoride composition, is producing and is making
The pollution of environment is avoided during, meanwhile, only containing micro Ti content, it is ensured that the quality and performance of steel after refining.
3. the floride-free low titanium molten steel scavenger (refining material) that prepared by the present invention can be applied to Steel Refining and steel-making covering slag
Industry；It can be used for the external refining material and steel-making covering slag base-material of purification of molten steel in smelting iron and steel industry；In welding rod industry
Available for welding rod coating.
Embodiment
Following non-limiting examples can make one of ordinary skill in the art be more fully understood the present invention, but not with
Any mode limits the present invention.
The content of calcium silicates is 90% in following natural wollastonites, and the content of titanium and titanium dioxide is 0.07%, and is free of
Fluorine and calcirm-fluoride；Its granularity is 0.5-10cm；
The content of silica is 98% in following quartz, and the content of titanium and titanium dioxide is 0.06%, it is not fluorine-containing and
Calcirm-fluoride；Its granularity is 0.5-10cm；
The content of calcium carbonate is 90% in following lime stones, and the content of titanium and titanium dioxide is 0.05%, it is not fluorine-containing and
Calcirm-fluoride；Its granularity is 0.5-10cm；
The content of calcium carbonate is 90% in following calcites, and the content of titanium and titanium dioxide is 0.05%, it is not fluorine-containing and
Calcirm-fluoride；Its granularity is 0.5-10cm；
The content of calcium oxide is 82% in following lime, and the content of titanium and titanium dioxide is 0.06%, not fluorine-containing and fluorine
Change calcium；Its granularity is 0.5-10cm.
Embodiment 1
A kind of preparation method of floride-free low titanium molten steel scavenger (refining material), the preparation method is：By weight percentage,
100% natural wollastonite is added in furnace cupola as raw material, the weight ratio of raw material and coke is 1：0.38, with material
Constantly melt, be quantitatively adding raw material and coke, keep raw material and coke layer thickness constant, meanwhile, keep melting layer in furnace cupola
Temperature is 1300-1500 DEG C, and the fused materials of furnace cupola outflow pass through water quenching, drying, screening, crushing, obtain floride-free low titanium steel
Water scavengine agent (refining material)；
Detect the component of above-mentioned floride-free low titanium molten steel scavenger (refining material)：SiO2：50.65%, CaO：44.62%, F：
0%, TiO2：0.05%, meet SiO2：49-55%, CaO：43-49%, F≤0.02%, TiO2≤ 0.08% design standard；
Above-mentioned floride-free low titanium molten steel scavenger (refining material) is applied to the production such as cord material steel (tyre equatorial steel).
Embodiment 2
A kind of preparation method of floride-free low titanium molten steel scavenger (refining material), the preparation method is：By weight percentage,
It is added to after 80% natural wollastonite, 20% quartz are mixed as raw material in furnace cupola, the weight ratio of raw material and coke is 1：
0.38, with the continuous thawing of material, raw material and coke are quantitatively adding, keeps raw material and coke layer thickness constant, meanwhile, keep
Melting layer temperature is 1300-1500 DEG C in furnace cupola, and the fused materials of furnace cupola outflow pass through water quenching, drying, screening, crushing,
Obtain floride-free low titanium molten steel scavenger (refining material)；
Detect the component of above-mentioned floride-free low titanium molten steel scavenger (refining material)：SiO2：60.09%, CaO：36.78%, F：
0%, TiO2：0.05%, meet SiO2：58-64%, CaO：34-39%, F≤0.02%, TiO2≤ 0.08% design standard；
Above-mentioned floride-free low titanium molten steel scavenger (refining material) is applied to the production such as spring steel.
Embodiment 3
A kind of preparation method of floride-free low titanium molten steel scavenger (refining material), the preparation method is：By weight percentage,
It is added to after 92% natural wollastonite, 8% lime stone are mixed as raw material in furnace cupola, the weight ratio of raw material and coke is 1：
0.38, with the continuous thawing of material, raw material and coke are quantitatively adding, keeps raw material and coke layer thickness constant, meanwhile, keep
Melting layer temperature is 1300-1500 DEG C in furnace cupola, and the fused materials of furnace cupola outflow pass through water quenching, drying, screening, crushing,
Obtain floride-free low titanium molten steel scavenger (refining material)；
Detect the component of above-mentioned floride-free low titanium molten steel scavenger (refining material)：SiO2：49.26%, CaO：47.54%, F：
0%, TiO2：0.04%, meet SiO2：41-50%, CaO：40-47%, F≤0.02%, TiO2≤ 0.08% design standard；
The fritting base-material that above-mentioned floride-free low titanium molten steel scavenger (refining material) is applied to variety classes covering slag is produced.
Embodiment 4
A kind of preparation method of floride-free low titanium molten steel scavenger (refining material), the preparation method is：By weight percentage,
It is added to after 95% natural wollastonite, 5% lime are mixed as raw material in furnace cupola, the weight ratio of raw material and coke is 1：
0.38, with the continuous thawing of material, raw material and coke are quantitatively adding, keeps raw material and coke layer thickness constant, meanwhile, keep
Melting layer temperature is 1300-1500 DEG C in furnace cupola, and the fused materials of furnace cupola outflow pass through water quenching, drying, screening, crushing,
Obtain floride-free low titanium molten steel scavenger (refining material)；
Detect the component of above-mentioned floride-free low titanium molten steel scavenger (refining material)：SiO2：49.26%, CaO：47.54%, F：
0%, TiO2：0.04%, meet SiO2：41-50%, CaO：40-47%, F≤0.02%, TiO2≤ 0.08% design standard；
The fritting base-material that above-mentioned floride-free low titanium molten steel scavenger (refining material) is applied to variety classes covering slag is produced.
Embodiment 5
A kind of preparation method of floride-free low titanium molten steel scavenger (refining material), the preparation method is：By weight percentage,
100% natural wollastonite is added in electric arc furnaces as raw material, it is 1500-1650 DEG C to keep melting layer temperature in electric arc furnaces,
With the continuous thawing of material, raw material is quantitatively adding, keeps raw material layer thickness constant, the fused materials of electric arc furnaces outflow pass through water
Quench, dry, sieve, crush, obtain floride-free low titanium molten steel scavenger (refining material)；
Detect the component of above-mentioned floride-free low titanium molten steel scavenger (refining material)：SiO2：52.57%, CaO：45.36%, F：
0%, TiO2：0.05%, S≤0.04%, meet SiO2：49-55%, CaO：43-49%, F≤0.02%, TiO2≤ 0.08%,
The design standard of S≤0.05%；
Above-mentioned floride-free low titanium molten steel scavenger (refining material) is applied to the production such as cord material steel (tyre equatorial steel).
Embodiment 6
A kind of preparation method of floride-free low titanium molten steel scavenger (refining material), the preparation method is：By weight percentage,
It is added to after 82% natural wollastonite, 18% quartz are mixed as raw material in electric arc furnaces, keeps melting layer temperature in electric arc furnaces
For 1500-1650 DEG C, with the continuous thawing of material, raw material is quantitatively adding, keeps raw material layer thickness constant, electric arc furnaces outflow
Fused materials pass through water quenching, drying, screening, crushing, obtain floride-free low titanium molten steel scavenger (refining material)；
Detect the component of above-mentioned floride-free low titanium molten steel scavenger (refining material)：SiO2：61.29%, CaO：37.86%, F：
0%, TiO2：0.05%, S≤0.04%, meet SiO2：58-64%, CaO：34-39%, F≤0.02%, TiO2≤ 0.08%,
The design standard of S≤0.05%；
Above-mentioned floride-free low titanium molten steel scavenger (refining material) is applied to the production such as spring steel.
Embodiment 7
A kind of preparation method of floride-free low titanium molten steel scavenger (refining material), the preparation method is：By weight percentage,
It is added to after 92% natural wollastonite, 8% calcite are mixed as raw material in electric arc furnaces, keeps melting layer temperature in electric arc furnaces
For 1500-1650 DEG C, with the continuous thawing of material, raw material is quantitatively adding, keeps raw material layer thickness constant, electric arc furnaces outflow
Fused materials pass through water quenching, drying, screening, crushing, obtain floride-free low titanium molten steel scavenger (refining material)；
Detect the component of above-mentioned floride-free low titanium molten steel scavenger (refining material)：SiO2：50.25%, CaO：46.98%, F：
0%, TiO2：0.05%, S≤0.04%, meet SiO2：41-50%, CaO：40-47%, F≤0.02%, TiO2≤
0.08%, S≤0.05% design standard；
The fritting base-material that above-mentioned floride-free low titanium molten steel scavenger (refining material) is applied to variety classes covering slag is produced.
Embodiment 8
A kind of preparation method of floride-free low titanium molten steel scavenger (refining material), the preparation method is：By weight percentage,
It is added to after 95% natural wollastonite, 5% lime are mixed as raw material in electric arc furnaces, melting layer temperature is in holding electric arc furnaces
1500-1650 DEG C, with the continuous thawing of material, raw material is quantitatively adding, keeps raw material layer thickness constant, it is molten that electric arc furnaces flows out
Melt material by water quenching, drying, screening, crushing, obtain floride-free low titanium molten steel scavenger (refining material)；
Detect the component of above-mentioned floride-free low titanium molten steel scavenger (refining material)：SiO2：50.25%, CaO：46.98%, F：
0%, TiO2：0.05%, S≤0.04%, meet SiO2：41-50%, CaO：40-47%, F≤0.02%, TiO2≤
0.08%, S≤0.05% design standard；
The fritting base-material that above-mentioned floride-free low titanium molten steel scavenger (refining material) is applied to variety classes covering slag is produced.
Claims (9)
1. a kind of preparation method of floride-free low titanium molten steel scavenger (refining material), it is characterised in that：The preparation method is：By day
At least one of right wollastonite, quartz and calcium carbonate obtain floride-free low titanium molten steel scavenger (refining material) as raw materials melt.
2. preparation method according to claim 1, it is characterised in that：The content of calcium silicates is not small in the natural wollastonite
In 50%, the content of titanium and titanium dioxide is less than 0.08%, not fluorine-containing and calcirm-fluoride.
3. preparation method according to claim 2, it is characterised in that：The content of silica is more than in the quartz
90%, the content of titanium and titanium dioxide is less than 0.08%, not fluorine-containing and calcirm-fluoride.
4. preparation method according to claim 3, it is characterised in that：The calcium carbonate is lime stone, calcite or lime；
The content of calcium carbonate is more than 90% in the lime stone, and the content of titanium and titanium dioxide is less than 0.08%, it is not fluorine-containing and
Calcirm-fluoride；
The content of calcium carbonate is more than 90% in the calcite, and the content of titanium and titanium dioxide is less than 0.08%, it is not fluorine-containing and
Calcirm-fluoride；
The content of calcium oxide is more than 70% in the lime, and the content of titanium and titanium dioxide is less than 0.08%, not fluorine-containing and fluorine
Change calcium.
5. preparation method according to claim 4, it is characterised in that：The granularity of the natural wollastonite is 0.5-10cm.
6. preparation method according to claim 5, it is characterised in that：The quartzy granularity is 0.5-10cm.
7. preparation method according to claim 6, it is characterised in that：The granularity of the calcium carbonate is 0.5-10cm.
8. preparation method according to claim 7, it is characterised in that：The raw material, by weight percentage, by following components
Composition：
Natural wollastonite 0-100%
Quartzy 0-75%
Calcium carbonate 0-75%.
9. preparation method according to claim 8, it is characterised in that：The temperature of the melting is 1300-1650 DEG C.
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|---|---|---|---|---|
| JPS59166616A (en) * | 1983-03-11 | 1984-09-20 | Onoda Cement Co Ltd | Steel ladle refining agent and manufacture thereof |
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| CN1332254A (en) * | 2001-08-15 | 2002-01-23 | 刘长福 | Novel molten steel purifier and its production process |
| CN1413949A (en) * | 2001-10-25 | 2003-04-30 | 张梦显 | Fusing of natural tabular spar and its using method |
| CN1827792A (en) * | 2006-03-31 | 2006-09-06 | 天津钢铁有限公司 | Fluorine-free pro-molten refining slag and preparation method thereof |
| CN103421930A (en) * | 2012-05-17 | 2013-12-04 | 张延大 | Novel tire cord steel refined material formula and preparation method thereof |
-
2017
- 2017-08-15 CN CN201710696763.8A patent/CN107245550A/en active Pending
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59166616A (en) * | 1983-03-11 | 1984-09-20 | Onoda Cement Co Ltd | Steel ladle refining agent and manufacture thereof |
| CN1301677A (en) * | 1999-12-29 | 2001-07-04 | 张梦里 | Artificial wallastonite and its producing method |
| CN1332254A (en) * | 2001-08-15 | 2002-01-23 | 刘长福 | Novel molten steel purifier and its production process |
| CN1413949A (en) * | 2001-10-25 | 2003-04-30 | 张梦显 | Fusing of natural tabular spar and its using method |
| CN1827792A (en) * | 2006-03-31 | 2006-09-06 | 天津钢铁有限公司 | Fluorine-free pro-molten refining slag and preparation method thereof |
| CN103421930A (en) * | 2012-05-17 | 2013-12-04 | 张延大 | Novel tire cord steel refined material formula and preparation method thereof |
Non-Patent Citations (1)
| Title |
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Application publication date: 20171013 |