CN1908196A - Molten steel refining deterioration agent for steelmaking - Google Patents
Molten steel refining deterioration agent for steelmaking Download PDFInfo
- Publication number
- CN1908196A CN1908196A CN 200610152056 CN200610152056A CN1908196A CN 1908196 A CN1908196 A CN 1908196A CN 200610152056 CN200610152056 CN 200610152056 CN 200610152056 A CN200610152056 A CN 200610152056A CN 1908196 A CN1908196 A CN 1908196A
- Authority
- CN
- China
- Prior art keywords
- steel
- refining
- present
- molten steel
- steelmaking
- 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.)
- Pending
Links
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 32
- 239000010959 steel Substances 0.000 title claims abstract description 32
- 238000007670 refining Methods 0.000 title claims abstract description 21
- 238000009628 steelmaking Methods 0.000 title description 6
- 230000006866 deterioration Effects 0.000 title description 5
- 239000007788 liquid Substances 0.000 claims description 11
- 229910052788 barium Inorganic materials 0.000 claims description 6
- 238000003723 Smelting Methods 0.000 abstract description 3
- 229910052755 nonmetal Inorganic materials 0.000 abstract description 2
- 239000000463 material Substances 0.000 abstract 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 10
- 229910052784 alkaline earth metal Inorganic materials 0.000 description 7
- 229910052782 aluminium Inorganic materials 0.000 description 7
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 7
- 229910045601 alloy Inorganic materials 0.000 description 6
- 239000000956 alloy Substances 0.000 description 6
- 239000004411 aluminium Substances 0.000 description 6
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 5
- TZCXTZWJZNENPQ-UHFFFAOYSA-L barium sulfate Chemical compound [Ba+2].[O-]S([O-])(=O)=O TZCXTZWJZNENPQ-UHFFFAOYSA-L 0.000 description 5
- 239000010428 baryte Substances 0.000 description 5
- 229910052601 baryte Inorganic materials 0.000 description 5
- 239000003795 chemical substances by application Substances 0.000 description 5
- 238000006477 desulfuration reaction Methods 0.000 description 5
- 230000023556 desulfurization Effects 0.000 description 5
- 239000000377 silicon dioxide Substances 0.000 description 5
- 229910052775 Thulium Inorganic materials 0.000 description 4
- DSAJWYNOEDNPEQ-UHFFFAOYSA-N barium atom Chemical compound [Ba] DSAJWYNOEDNPEQ-UHFFFAOYSA-N 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 239000012535 impurity Substances 0.000 description 4
- 229910052761 rare earth metal Inorganic materials 0.000 description 4
- 239000000571 coke Substances 0.000 description 3
- 239000002131 composite material Substances 0.000 description 3
- 238000005520 cutting process Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 150000002910 rare earth metals Chemical class 0.000 description 3
- 239000002994 raw material Substances 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 229910004298 SiO 2 Inorganic materials 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 229910052710 silicon Inorganic materials 0.000 description 2
- 239000011573 trace mineral Substances 0.000 description 2
- 235000013619 trace mineral Nutrition 0.000 description 2
- 229910000640 Fe alloy Inorganic materials 0.000 description 1
- 229910000691 Re alloy Inorganic materials 0.000 description 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- 239000005864 Sulphur Substances 0.000 description 1
- 150000001342 alkaline earth metals Chemical class 0.000 description 1
- OOJQNBIDYDPHHE-UHFFFAOYSA-N barium silicon Chemical compound [Si].[Ba] OOJQNBIDYDPHHE-UHFFFAOYSA-N 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- 239000011575 calcium Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000001627 detrimental effect Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 229910052758 niobium Inorganic materials 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000011946 reduction process Methods 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
- 229910052712 strontium Inorganic materials 0.000 description 1
- 230000002195 synergetic effect Effects 0.000 description 1
Landscapes
- Treatment Of Steel In Its Molten State (AREA)
Abstract
the invention discloses a steel-smelting refining alterant in the balled non-metal inclusion, which is characterized by the following: reducing size; distributing evenly; improving steel quality; reducing smelting cost as a new refining material.
Description
Technical field
The present invention relates to a kind of liquid steel refining alterant, it is that the raw material that contains alkali earth metal raw material and thulium is smelted the iron alloy made from carbothermy.
Background technology
The increase of production of Iron And Steel Industry is very rapid, and the quality that improves steel seems very important.Current, therefore for the quality that improves steel has mainly adopted furnace outer refining technology etc., but because its cost is more expensive,, to solve on the refining of steel and the spoilage problems and need look for another way so large-scale popularization is restricted.Thulium and alkali earth metal have very strong chemical affinity to the oxygen in the steel, sulphur and other detrimental impurity, can make the form modification of nonmetallic inclusion in the steel rotten again, can improve the quality of steel with them.But, thulium and alkali earth metal not widespread use in steel-making as yet at present.The desulfurization that alkali earth metal such as silico-calcium only are used for, silicon barium only is used to produce the master alloy of steelmaking composite deoxidizer.Rare earth metal only is used for desulfurization basically in steel-making.
Summary of the invention
In view of the foregoing, main purpose of the present invention is to provide a kind of composite alloy of smelting with alkali earth metal and thulium, refining deterioration agent as molten steel, it can reach deoxidation, desulfurization and remove other objectionable impuritiess, can carry out denaturing treatment to the nonmetal inclusion in the steel again, and, because the synergistic effect of alkaline-earth metal and rare earth metal makes above-mentioned effect all increase.
Liquid steel refining alterant of the present invention contains (weight %):
Silicon: 30-60%
Barium: 5-25%
Rare earth: 1-15%
Described molten steel alterant also contains (weight %) Al, the Fe of 2-20% and surplus and impurity.
The applicant's, application number is once to address in No. 200610003456.9 the patent of invention specification sheets, also contain other elements owing to be used for producing the starting material of described liquid steel refining alterant, be reduced out one or more under the result contains in the column element: Ca1-15%, Ti1-6% in the reduction process of these elements in the hot stove in ore deposit in the composite alloy of gained; Elements such as Sr, Nb, Mg respectively account for 0.5-3%, yet, the existence of these elements whether and what of content, because of ore grade, the difference in the place of production and difference is at random; And this contained dvielement is controlled through artificial for specific purpose in the alterant of the present invention, is nonrandom, but determine, so all Si-Ba-RE alloys that contains this dvielement randomly all have nothing to do with alloy of the present invention.
Si and Ba in the alloy of the present invention play a part deoxidation, because they are earlier with the oxygen removal in the molten steel, thereby protect rare earth element, make it demonstrate fully desulfurization and make the effect of the rotten sex change of inclusion.
In refining deterioration agent of the present invention, the effect of alkali earth metal barium is deoxidation, and barium has bigger deoxidizing capacity than traditional aluminium.Because the deoxidation constant K of aluminium in the time of 1600 ℃
Al=2.153 * 10
-14, and barium deoxidation constant K in the time of 1600 ℃
Ba=6.195 * 10
-8Baric 5-25% suits in the refining deterioration agent of the present invention.When being used to contain aluminum steel, also can contain the aluminium of 2-20% in this alloy.
The preparation method of refining deterioration agent of the present invention is as follows:
Silica, barite and steel cuttings are reduced with coke in the hot stove in ore deposit, add norium before coming out of the stove, come out of the stove behind the fine melt, promptly make required refining agent.
Embodiment
Further specify production of the present invention below by embodiment.
Embodiment 1
Hot stove reduction with carbon method is produced liquid steel refining alterant of the present invention in the ore deposit of 3200KVA.
Press table 1 ratio of components:
Table 1 (kg)
| Title | Silica | Barite | Norium | Wingdale | Steel cuttings | Coke |
| Quantity | 900 | 300 | 40 | 100 | 100 | 1500 |
Used barite contains BaSO
480%, silica contains SiO
298%.
The liquid steel refining alterant Chemical Composition of the present invention (weight %) of gained sees Table 2:
Table 2
| Element | Si | Ba | RE | Impurity | Fe and trace element | ||
| C | S | P | |||||
| Weight % | 47.16 | 15.93 | 5.32 | 1.02 | 0.83 | 0.63 | Surplus |
Embodiment 2
Produce aluminiferous liquid steel refining alterant of the present invention in the ore deposit of 3200KVA hot stove reduction with carbon method.Processing step is except that the proportioning difference, and all the other steps are identical with embodiment 1, adds the aluminium vanadine in embodiment 1 proportioning raw materials.
Press table 3 ratio of components:
Table 3 (kg)
| Title | Silica | Barite | Norium | The aluminium vanadine | Wingdale | Steel cuttings | Coke |
| Quantity | 650 | 250 | 40 | 200 | 100 | 100 | 1500 |
Barite contains BaSO
480%, silica contains SiO
298%, the aluminium vanadine contains Al
2O
382%.
The liquid steel refining alterant Chemical Composition of the present invention (weight %) of gained sees Table 4
Table 4
| Element | Si | Ba | Al | RE | Impurity | Fe and trace element | ||
| C | S | P | ||||||
| Weight | 38.5 | 12.6 | 12.27 | 4.5 | 0.93 | 0.03 | 0.03 | Surplus |
Use liquid steel refining alterant of the present invention to have deoxidation in the steel-making, desulfurization and make the effect of the rotten sex change of inclusion can make the nodularization of nonmetallic inclusionsin steel form, and size decreases is evenly distributed.When improving steel quality, can reduce steel-making cost again, favorable economic benefit and social benefit are arranged.
Claims (2)
1, a kind of liquid steel refining alterant that is used to make steel, it contains (weight %) Si:30-60%, Ba:5-25%, RE:1-15%.
2, liquid steel refining alterant as claimed in claim 1, it also can contain (weight %): Al:2-20%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200610152056 CN1908196A (en) | 2006-09-12 | 2006-09-12 | Molten steel refining deterioration agent for steelmaking |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200610152056 CN1908196A (en) | 2006-09-12 | 2006-09-12 | Molten steel refining deterioration agent for steelmaking |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1908196A true CN1908196A (en) | 2007-02-07 |
Family
ID=37699425
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200610152056 Pending CN1908196A (en) | 2006-09-12 | 2006-09-12 | Molten steel refining deterioration agent for steelmaking |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1908196A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102000807A (en) * | 2010-10-13 | 2011-04-06 | 江苏万恒铸业有限公司 | Manufacturing process of high-pressure hydro-carbon steel valve castings |
| CN102618775A (en) * | 2011-01-28 | 2012-08-01 | 谢应旭 | Alkaline earth-rare earth composite iron alloy and preparation method thereof |
-
2006
- 2006-09-12 CN CN 200610152056 patent/CN1908196A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102000807A (en) * | 2010-10-13 | 2011-04-06 | 江苏万恒铸业有限公司 | Manufacturing process of high-pressure hydro-carbon steel valve castings |
| CN102618775A (en) * | 2011-01-28 | 2012-08-01 | 谢应旭 | Alkaline earth-rare earth composite iron alloy and preparation method thereof |
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