CN101532070A - Steel fusant desulfurizer - Google Patents
Steel fusant desulfurizer Download PDFInfo
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- CN101532070A CN101532070A CN200910080870A CN200910080870A CN101532070A CN 101532070 A CN101532070 A CN 101532070A CN 200910080870 A CN200910080870 A CN 200910080870A CN 200910080870 A CN200910080870 A CN 200910080870A CN 101532070 A CN101532070 A CN 101532070A
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- powder
- desulphurizing
- fusant
- steel
- straight iron
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- Refinement Of Pig-Iron, Manufacture Of Cast Iron, And Steel Manufacture Other Than In Revolving Furnaces (AREA)
Abstract
A steel fusant desulfurizer belongs to the field of steel smelting. The invention is characterized in that desulphurizing powder and straight iron powder are uniformly mixed by a ball mill and made into blocks by pressing; the desulphurizing powder is made of micrometer powder and nanometer powder, and the straight iron powder is adhesive using micrometer iron powder smaller than 250 meshes, and the weight ratio of the straight iron powder and the desulphurizing powder is (4-10):1; the desulphurizing powder comprises CaCO3 powder, CaO powder, CaF powder, Ca powder and Mg powder. The desulphurizing powder and straight iron powder are used for playing a pre-dispersion role for desulphurizing powder during ball milling so that the desulphurizing powder is unlikely to agglomerate into large granules and the reaction interface with S is enlarged. The desulphurizing powder and straight iron powder are pressed into blocks for increasing the proportion to facilitate the desulphurizing powder to permeate into the steel fusant to avoid floating into the dregs, thus improving the efficiency of desulphurization. When CaCO3 powder is used as the desulphurizing powder, the decomposed CaO fully contacts with S to generate CaS which is attached to the bubble of CO2, the CO2 floats up while S is removed from the fusant, thus purifying the fusant.
Description
Technical field
The invention belongs to field of iron and steel smelting, the sweetening agent of a kind of steel-making or ironmaking usefulness is provided.
Background technology
Traditional sweetening agent that steel-making or iron industry are used is CaO powder, CaF powder, Ca powder, magnesium powder or magnesium silk, MAG block etc. normally, these sweetening agent material light specific gravities, cost height, be difficult for sinking in molten steel or the molten iron, scaling loss is serious, not only desulfuration efficiency is low, influence sweetening effectiveness, also caused the waste of resource.
For solving the problem of sweetening agent light specific gravity, there are many technician to expect sweetening agent and iron consolute being arrived together with the mode of mixed smelting, played and improved the effect of proportion, but had burning problems equally, the waste that has brought the energy again.
Summary of the invention
The present invention seeks in order to solve the low and burning problems of desulfuration efficiency that steel-making or iron industry adopt traditional sweetening agent desulfurization to exist.
A kind of steel fusant desulfurizer is characterized in that using desulfurized powder and straight iron powder through ball milling mixing, briquetting.Desulfurized powder can be used micron, nano powder, and straight iron powder is as binding agent, and is available less than 250 purpose micron iron powders.The weight ratio of straight iron powder and desulfurized powder is (4～10): 1.Desulfurized powder comprises CaCO
3Powder, CaO powder, Ca powder, CaF powder, magnesium powder etc.
The sweetening agent of briquetting adds in the steel fusant, because sweetening agent proportion and steel fusant are approaching, difficult come-up directly enters in the slag, and the iron powder in the sweetening agent contacts with steel fusant and fusing rapidly, and desulfurized powder is brought in the steel fusant.Iron powder does not pollute steel fusant, only plays carrier function.
Above-described desulfurized powder is with CaCO
3Powder is best, CaCO
3Aboundresources, with low cost.Use CaCO
3Powder is a desulfurized powder, has not only save CaCO
3Sinter the required energy of CaO into, and CaCO
3Powder decomposes the CO that generates in the high-temperature steel fusant
2Also start mechanical function, the CaO after the decomposition fully contacts with S in the steel fusant and generates CaS, and CaS is attached to CaCO
3CO after the decomposition
2On the bubble, CO
2Bubble is brought CaS in the slag in floating-upward process, has removed the S in the steel fusant.
The adding technology of steel fusant desulfurizer is in tapping, before tapping a blast furnace steel fusant desulfurizer to be placed iron and steel bag bottom, utilize tap, when tapping a blast furnace, the impact and the stirring action of iron steel fusant are brought sweetening agent in the steel fusant into.
Advantage of the present invention is:
1) straight iron powder and desulfurized powder play pre-dispersed effect to desulfurized powder when the ball milling mixing, make desulfurized powder be difficult for being agglomerated into macrobead in steel fusant.Increased with melt in the reaction interface of S.
2) straight iron powder and desulfurized powder briquetting have increased proportion, help desulfurized powder is slipped in the steel fusant, and desulfurized powder is not directly floated in the slag, improve the desulfuration efficiency of sweetening agent.
3) use CaCO
3Powder is a desulfurized powder, has saved CaCO
3Sinter the required energy of CaO into; CaCO
3Powder decomposes the CO that generates in the high-temperature steel fusant
2Also start mechanical function, the CaO after the decomposition fully contacts with S in the steel fusant and generates CaS, and CaS is attached to CaCO
3CO after the decomposition
2On the bubble, CO
2Bubble is brought CaS in the slag into partly being mingled with in floating-upward process, has removed the S in the steel fusant, has purified steel fusant.。
Embodiment:
Embodiment 1, with 300 purpose CaCO
3Powder is a desulfurized powder, is binding agent with 300 purpose micron straight iron powders, CaCO
3Powder and straight iron powder be through ball milling mixing, briquetting, straight iron powder and CaCO
3The weight ratio of powder is 6:1.
Embodiment 2, being desulfurized powder with 600 purpose magnesium powder, is binding agent with 400 purpose micron straight iron powders, and magnesium powder and straight iron powder are through ball milling mixing, briquetting.The weight ratio of straight iron powder and magnesium powder is 5:1.
Embodiment 3, being desulfurized powder with 600 purpose CaF powder, is binding agent with 400 purpose micron straight iron powders, and CaF powder and straight iron powder are through ball milling mixing, briquetting.The weight ratio of straight iron powder and CaF powder is 7:1.
Embodiment 4, being desulfurized powder with 1200 purpose CaO powder, is binding agent with 800 purpose micron straight iron powders, and CaO powder and straight iron powder are through ball milling mixing, briquetting.The weight ratio of straight iron powder and CaO powder is 10:1.
Claims (2)
1. a steel fusant desulfurizer is characterized in that using desulfurized powder and straight iron powder through ball milling mixing, briquetting; Desulfurized powder micron, nano powder, straight iron powder is a binding agent, uses less than 250 purpose micron iron powders.The weight ratio of straight iron powder and desulfurized powder is (4～10): 1; Desulfurized powder comprises CaCO
3Powder, CaO powder, CaF powder, Ca powder, magnesium powder.
2. a kind of steel fusant desulfurizer as claimed in claim 1 is characterized in that desulfurized powder CaCO
3During powder, CaCO
3Powder decomposes in the high-temperature steel fusant and generates CaO, and the CaO after the decomposition fully contacts generation CaS with S in the steel fusant, and CaS is attached to CaCO
3CO after the decomposition
2On the bubble, CO
2Bubble is brought CaS in the slag in floating-upward process, has removed the S in the steel fusant.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910080870A CN101532070A (en) | 2009-03-26 | 2009-03-26 | Steel fusant desulfurizer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910080870A CN101532070A (en) | 2009-03-26 | 2009-03-26 | Steel fusant desulfurizer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101532070A true CN101532070A (en) | 2009-09-16 |
Family
ID=41102930
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200910080870A Pending CN101532070A (en) | 2009-03-26 | 2009-03-26 | Steel fusant desulfurizer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101532070A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102776378A (en) * | 2012-07-30 | 2012-11-14 | 攀钢集团江油长城特殊钢有限公司 | Desulfurization method of high temperature alloy smelted by vacuum induction furnace |
| CN108588337A (en) * | 2018-06-07 | 2018-09-28 | 上海应用技术大学 | A kind of nanometer dephosphorization slag former and preparation method thereof suitable for middle high phosphorus molten steel |
| CN108754058A (en) * | 2018-06-07 | 2018-11-06 | 上海应用技术大学 | A kind of nano-hot metal composite desulfurizing agent and preparation method thereof |
| CN109112247A (en) * | 2018-10-23 | 2019-01-01 | 武汉钢铁有限公司 | Composite blowing iron melt desulfurizing agent and its sulfur removal technology |
| CN112063800A (en) * | 2020-08-23 | 2020-12-11 | 江苏省沙钢钢铁研究院有限公司 | KR ultrafine powder desulfurizer and application process thereof |
| CN114231821A (en) * | 2021-02-02 | 2022-03-25 | 上海牛茂实业有限公司 | Hydraulic forming carbon-manganese pressed ball for steelmaking and preparation method thereof |
-
2009
- 2009-03-26 CN CN200910080870A patent/CN101532070A/en active Pending
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102776378A (en) * | 2012-07-30 | 2012-11-14 | 攀钢集团江油长城特殊钢有限公司 | Desulfurization method of high temperature alloy smelted by vacuum induction furnace |
| CN102776378B (en) * | 2012-07-30 | 2014-04-30 | 攀钢集团江油长城特殊钢有限公司 | Desulfurization method of high temperature alloy smelted by vacuum induction furnace |
| CN108588337A (en) * | 2018-06-07 | 2018-09-28 | 上海应用技术大学 | A kind of nanometer dephosphorization slag former and preparation method thereof suitable for middle high phosphorus molten steel |
| CN108754058A (en) * | 2018-06-07 | 2018-11-06 | 上海应用技术大学 | A kind of nano-hot metal composite desulfurizing agent and preparation method thereof |
| CN109112247A (en) * | 2018-10-23 | 2019-01-01 | 武汉钢铁有限公司 | Composite blowing iron melt desulfurizing agent and its sulfur removal technology |
| CN112063800A (en) * | 2020-08-23 | 2020-12-11 | 江苏省沙钢钢铁研究院有限公司 | KR ultrafine powder desulfurizer and application process thereof |
| CN112063800B (en) * | 2020-08-23 | 2022-04-19 | 江苏省沙钢钢铁研究院有限公司 | KR ultrafine powder desulfurizer and application process thereof |
| CN114231821A (en) * | 2021-02-02 | 2022-03-25 | 上海牛茂实业有限公司 | Hydraulic forming carbon-manganese pressed ball for steelmaking and preparation method thereof |
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| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Open date: 20090916 |