CN102718508A - Application of magnesite composite material preparation method in nickel-iron high carbon ferrochrome production by submerged arc furnace - Google Patents
Application of magnesite composite material preparation method in nickel-iron high carbon ferrochrome production by submerged arc furnace Download PDFInfo
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- CN102718508A CN102718508A CN2012100825946A CN201210082594A CN102718508A CN 102718508 A CN102718508 A CN 102718508A CN 2012100825946 A CN2012100825946 A CN 2012100825946A CN 201210082594 A CN201210082594 A CN 201210082594A CN 102718508 A CN102718508 A CN 102718508A
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Abstract
The invention provides a furnace bottom ramming refractory, pertaining to the technical field of refractories. The refractory of the invention has strong practicability, reduces the production cost, saves resources for the country and is creative in a metallurgy field. The refractory of the invention is characterized by containing magnesium oxide with a mass percentage of 85% to 95% and has a strong anti-sintering ability. A not fully sintered magnesium oxide product can prevent a crack and the furnace bottom can last long. The refractory of the invention is verified by dozens of domestic enterprises, has good effects, enhances the production safety, completely solves the main problem of the furnace bottom cracking, prevents a risk that hundreds of tons of high-temperature molten iron in a furnace penetrate through the furnace, avoids great hidden safe troubles in production and has great significance in personal safety.
Description
Technical field
The present invention relates to a kind of furnace bottom ramming material and application thereof, particularly a kind of furnace bottom ramming material, its preparation method and the application in the hot stove production in ore deposit ferronickel stove, high carbon chromium iron furnace belong to fire-resistant technical field.
Background technology
Furnace bottom ramming material many trioxygen-containingizations two aluminium, silicon-dioxide, quicklime etc. in the hot stove in general ore deposit, Natural manganese dioxide is a kind of refractory materials, consumption is difficult for high again at 80%-84%.Mostly the ramming material that the ferronickel of the hot stove production in ore deposit at present stove uses is to contain the Natural manganese dioxide below 85%, and work-ing life is about 1 year.High again content of magnesia is difficult for reaching on the one hand, possibly influence over-all properties on the other hand.
Summary of the invention
The objective of the invention is to overcome the prior art deficiency and a kind of furnace bottom ramming material is provided, it is prepared in the hot stove in ore deposit and produces the application in ferronickel stove, the high carbon chromium iron furnace, and the anti-caking power of this kind material is strong, long service life.
The technical scheme that the present invention takes is:
A kind of furnace bottom ramming material, its content are the Natural manganese dioxide of mass percent 85%-95%.
Described furnace bottom ramming material, preferably by the Natural manganese dioxide of mass content 85%-95%, surplus be selected from other MOXs, one or more materials of silicon-dioxide, carbon are formed.
Described foreign metal oxide compound preferentially is selected from other MOXs such as quicklime, red oxide of iron, aluminium sesquioxide and forms.
Described furnace bottom ramming material; Further preferred by the Natural manganese dioxide of mass content 85%-95%, the silicon-dioxide of 1%-4%, the quicklime of 1%-5%, other MOXs beyond 3% red oxide of iron and the red oxide of iron of 0-3%, quicklime, the aluminium sesquioxide are formed.
The preparation method of above-mentioned furnace bottom ramming material; Step is: electrosmelted magnesite clinker is broken into the particle that is not more than 7mm through processing; Raw material with 30% is processed into 200 purpose fine powders, with after 20% particle and the even stirring of 30%200 order fine powders, is 50% again; 0-1mm high ferro high calcium magnesia evenly stirs, and processes finished product.
The application of above-mentioned furnace bottom ramming material in the hot stove production in ore deposit ferronickel stove, high carbon chromium iron furnace; Application method is: with spreading furnace bottom with furnace bottom ramming material of the present invention after the masonry of well permanent layer; A layer thickness 150mm; Total thickness 1400-1500mm completes the back and does that to beat bell real, adds the thick iron plate of one deck 4mm above after furnace bottom spread to prevent to crush.
The hot stove in ore deposit is produced and is used conventional smelting technology in the ferronickel stove.
The invention has the beneficial effects as follows:
Furnace bottom ramming material of the present invention is used in the hot stove in ore deposit and produces that to have anti-caking power in ferronickel stove, the high carbon chromium iron furnace strong, and characteristics such as long service life about a year and a half in work-ing life, have reduced labor strength, avoid tearing open the stove expense.Usually the strong furnace hearth material of caking power is difficult for washing away, and is unfavorable for being used for furnace bottom, is easy to agglomerating material easy of crack, and furnace bottom ramming material of the present invention can make sintering velocity slow down, and makes furnace bottom be difficult for splitting, and has increased work-ing life.
Description of drawings
Fig. 1 is that the hot stove in ore deposit is produced working drawing in the ferronickel high carbon ferro-chrome.
(1) is furnace bottom ramming refractory materials among the figure.
Embodiment
Below in conjunction with embodiment the present invention is further specified.Wherein electrosmelted magnesite clinker is commercial, contains the Natural manganese dioxide quality at 85%-95%.
A kind of furnace bottom ramming material is made up of Natural manganese dioxide and 8% quicklime, 3% silicon oxide of quality percentage composition 86%.
Preparing method's step is: electrosmelted magnesite clinker is broken into the particle that is not more than 7mm through processing; The half the particle that is not more than 7mm further was processed into 200 purpose fine powders, remaining half particle and 200 purpose fine powder that are not more than 7mm is stirred process finished product.
The application of above-mentioned furnace bottom ramming material in the hot stove production in ore deposit high carbon chromium iron furnace; Application method is: with spreading furnace bottom with furnace bottom ramming material of the present invention after the masonry of well permanent layer; A layer thickness 150mm; Total thickness 1400mm completes the back and does that to beat bell real, adds the thick iron plate of one deck 4mm above after furnace bottom spread to prevent to crush.The hot stove in ore deposit is produced and is used conventional smelting technology in the ferronickel stove.
Embodiment 2
A kind of furnace bottom ramming material is made up of Natural manganese dioxide and 2% 3 silicon oxide, 2% quicklime of quality percentage composition 93%.Preparing method, application method are with embodiment 1.Be implemented in the ferronickel stove.
Embodiment 3
A kind of furnace bottom ramming material is made up of Natural manganese dioxide and 5% quicklime, 3% silicon-dioxide, 3% Indian red of quality percentage composition 90%.Be implemented in the high carbon chromium iron furnace.
Preparing method: electrosmelted magnesite clinker is broken into the particle that is not more than 7mm through processing, the half the particle that is not more than 7mm further was processed into 200 purpose fine powders, remaining half particle that is not more than 7mm is stirred with crossing 200 purpose fine powders, process finished product.
Application method is with embodiment 1.
Embodiment 4
A kind of furnace bottom ramming material is broken into the particle that is not more than 7mm with electrosmelted magnesite clinker through processing, and the raw material with 30% is processed into 200 purpose fine powders; Again with after 20% particle and the even stirring of 30%200 order fine powders; Be 50%, 0-1mm high ferro high calcium magnesia evenly stirs, and processes finished product.Be implemented in the high carbon chromium iron furnace, with being that furnace bottom uses.Preparing method, application method are with embodiment 1.
Embodiment 5
A kind of furnace bottom ramming material is made up of Natural manganese dioxide and 2% silicon-dioxide, 2% quicklime, 1% red oxide of iron of quality percentage composition 94%.
The preparation method: with embodiment 3, different is that other foreign metal oxide compounds of adding are red oxide of iron.Be implemented in the ferronickel stove.
Application method is with embodiment 1.
Comparative Examples 1
A kind of furnace bottom ramming material is made up of the Natural manganese dioxide of quality percentage composition 92% and 2% silicon oxide, 2% quicklime, 2% red stone.The preparation method is with embodiment 1.
Application method is with embodiment 1.Be implemented in the ferronickel stove.
Comparative Examples 2
A kind of furnace bottom ramming material is made up of Natural manganese dioxide and 2% silicon-dioxide, 10% quicklime, 5% red oxide of iron of quality percentage composition 83%.The preparation method is with embodiment 1.
Application method is with embodiment 1.Be implemented in the ferronickel stove.
The test in work-ing life:
| Material | Work- |
| Embodiment | |
| 1 | 60 months |
| Embodiment 2 | 28 months |
| Embodiment 3 | 25 months |
| Embodiment 4 | 27 months |
| Embodiment 5 | 29 months |
| Comparative Examples 1 | 30 months |
| Comparative Examples 2 | 8 months |
Claims (6)
1. a furnace bottom ramming material is characterized in that, it contains the Natural manganese dioxide of mass percent 85%-95%, and density is more than 2.6.
2. a kind of furnace bottom ramming refractory materials according to claim 1 is characterized in that, the Natural manganese dioxide of its mass content 85%-95%, surplus be that materials such as other MOXs, silicon-dioxide, carbon are formed.
3. 2 described a kind of furnace bottom ramming refractory materialss as requested is characterized in that described other MOXs are selected from quicklime, red oxide of iron, aluminium sesquioxide and manganese oxide, zinc oxide etc.
4. 2 described a kind of furnace bottom ramming refractory materialss as requested; It is characterized in that; Its mass content is the Natural manganese dioxide of 85%-95%, the silicon-dioxide of 1%-3%, the quicklime of 2%-6%; The red oxide of iron of 0.5%-5% reaches 0.3% quicklime, other MOXs compositions beyond the red oxide of iron.
5. a kind of furnace bottom ramming refractory materials according to claim 1; Its preparation method is: with the broken particle that is not more than 7mm of electrosmelted magnesite clinker processing; Raw material with 30% is processed into 200 purpose fine powders, with after 20% particle and the even stirring of 30%200 order fine powders, is 50% again; 0-1mm high ferro high calcium magnesia evenly stirs, and processes finished product.
6. the said furnace bottom ramming of claim 1-5 refractory materials is characterized in that, hot stove is produced in the ferronickel stove in the ore deposit, and furnace bottom uses.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100825946A CN102718508A (en) | 2012-02-23 | 2012-03-27 | Application of magnesite composite material preparation method in nickel-iron high carbon ferrochrome production by submerged arc furnace |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210043096.0 | 2012-02-23 | ||
| CN201210043096 | 2012-02-23 | ||
| CN2012100825946A CN102718508A (en) | 2012-02-23 | 2012-03-27 | Application of magnesite composite material preparation method in nickel-iron high carbon ferrochrome production by submerged arc furnace |
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| CN102718508A true CN102718508A (en) | 2012-10-10 |
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| CN2012100825946A Pending CN102718508A (en) | 2012-02-23 | 2012-03-27 | Application of magnesite composite material preparation method in nickel-iron high carbon ferrochrome production by submerged arc furnace |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105330303A (en) * | 2015-09-28 | 2016-02-17 | 洛阳暖盈电子技术有限公司 | Novel magnesia refractory material |
| CN111995374A (en) * | 2019-05-27 | 2020-11-27 | 海城市祥程矿业有限公司 | Magnesium ramming mass for electric furnace |
| CN112880409A (en) * | 2021-01-12 | 2021-06-01 | 甘肃金麓银峰冶金科技有限公司 | Method for prolonging service life of refractory material at bottom of ferronickel electric furnace and bottom of ferronickel electric furnace |
| CN114315320A (en) * | 2021-12-29 | 2022-04-12 | 耐镁佳(营口)金属有限公司 | Magnesium oxide refractory material and application thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1067642A (en) * | 1992-07-06 | 1993-01-06 | 辽宁省营口县大石桥冶金耐火材料厂 | A kind of technical formula of magnesia-chrome sand |
| CN1654415A (en) * | 2005-01-20 | 2005-08-17 | 海城华宇耐火材料有限公司 | High-calcium low-iron magnesian dry method ramming mass and its production method |
| CN1690012A (en) * | 2004-04-29 | 2005-11-02 | 上海彭浦特种耐火材料厂 | Electric furnace bottom dry ramming mass and its making method |
-
2012
- 2012-03-27 CN CN2012100825946A patent/CN102718508A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1067642A (en) * | 1992-07-06 | 1993-01-06 | 辽宁省营口县大石桥冶金耐火材料厂 | A kind of technical formula of magnesia-chrome sand |
| CN1690012A (en) * | 2004-04-29 | 2005-11-02 | 上海彭浦特种耐火材料厂 | Electric furnace bottom dry ramming mass and its making method |
| CN1654415A (en) * | 2005-01-20 | 2005-08-17 | 海城华宇耐火材料有限公司 | High-calcium low-iron magnesian dry method ramming mass and its production method |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105330303A (en) * | 2015-09-28 | 2016-02-17 | 洛阳暖盈电子技术有限公司 | Novel magnesia refractory material |
| CN111995374A (en) * | 2019-05-27 | 2020-11-27 | 海城市祥程矿业有限公司 | Magnesium ramming mass for electric furnace |
| CN112880409A (en) * | 2021-01-12 | 2021-06-01 | 甘肃金麓银峰冶金科技有限公司 | Method for prolonging service life of refractory material at bottom of ferronickel electric furnace and bottom of ferronickel electric furnace |
| CN114315320A (en) * | 2021-12-29 | 2022-04-12 | 耐镁佳(营口)金属有限公司 | Magnesium oxide refractory material and application thereof |
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Application publication date: 20121010 |