CN107584088B - A kind of fever slugging coverture and preparation method thereof - Google Patents
A kind of fever slugging coverture and preparation method thereof Download PDFInfo
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- CN107584088B CN107584088B CN201710883272.4A CN201710883272A CN107584088B CN 107584088 B CN107584088 B CN 107584088B CN 201710883272 A CN201710883272 A CN 201710883272A CN 107584088 B CN107584088 B CN 107584088B
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Abstract
A kind of fever slugging coverture, is indicated with weight percentage, and the raw material group becomes alumina powder 13~17%, metallic aluminium 7~23%, magnesia 12~19%, magnesium metal 8~26%, calcium oxide 6~13%, metallic silicon 7~14%, vermiculite 16~20%, ammonium nitrate 2~3%.The present invention solve the problems, such as steel-making, ladle in ironmaking processes, ladle, tundish crust dross fever slugging coverture be added after ladle can automatic crushing can be sprawled rapidly in molten steel surface, reach all standing to molten steel, form three layers of melting structure, secondary oxidation of steel and heat radiation are prevented, molten steel surface nocuousness field trash is adsorbed；During using fever slugging coverture of the invention, toxic gas, dust escaped quantity are zero, and noiseless generates, and operation is convenient, can reduce environmental pollution, be conducive to environmental protection, social benefit is significant.
Description
Technical field
The invention belongs to technical field of refractory materials, hang more particularly to a kind of solution ladle, ladle, tundish crust
Fever slugging coverture of slag problem and preparation method thereof.
Background technique
During long-term production, since ladle, ladle, tundish are easy molten steel, molten iron splashes, secondary oxidation occurs
And heat radiation, dross occurs, etch lining phenomena such as crust, seriously affects ladle ladle, tundish service life.According to refining
Steel, ironmaking production situation solve the problems, such as that steel-making, ladle, ladle, tundish crust dross position have in ironmaking processes: 1,
Ladle；
2, ladle；
3, tundish etc..
Currently, countries in the world there are not always ladle, ladle, tundish crust dross problem in steel-making, ironmaking processes
There is effective solution, generallys use artificial mechanism cleaning method and go to solve the problems, such as this, the obvious of this method lacks
Point are as follows: cause secondary oxidation of steel and heat radiation, dust is flown upward, and environment is polluted, and increases labor intensity, threatens equipment and operator
Safety of member etc..
For solves the problems, such as steel-making at present, ladle, ladle, tundish crust existing for the method for dross in ironmaking processes
Defect, the applicant by studying for a long period of time, successfully develop one kind can thoroughly solve steel-making, ladle, molten iron in ironmaking processes
The fever slugging coverture of packet, tundish crust dross problem.
Summary of the invention
Goal of the invention of the invention is to provide a kind of fever slugging coverture and preparation method.Made steel for current solution,
Ladle in ironmaking processes, ladle, defect existing for the method for tundish crust dross problem, the present invention provides one kind can be thorough
Bottom solve the problems, such as steel-making, ladle in ironmaking processes, ladle, tundish crust dross fever slugging coverture.Present invention hair
Thermalization slag coverture is with shape is reasonable, light-weight, spreadability is good, heat insulation effect is good；It is covered using fever slugging of the invention
Agent can prevent secondary oxidation of steel and heat radiation after use, adsorb molten steel surface nocuousness field trash.Not dross, not carburetting,
Not etch lining, is not crusted, and extends ladle service life, using simple, the advantages that mitigating labor intensity of workers.
To solve the above-mentioned problems, the technical scheme adopted by the invention is as follows:
A kind of fever slugging coverture, is indicated with weight percentage, the raw material group become alumina powder 13~17%,
Metallic aluminium 7~23%, magnesia 12~19%, magnesium metal 8~26%, calcium oxide 6~13%, metallic silicon 7~14%, vermiculite 16
~20%, ammonium nitrate 2~3%.
The granularity of the alumina powder is -300 mesh；Al in the alumina powder2O3Mass percentage >=80%,
Fe2O3Mass percentage≤2%；Bulk density >=2.9g/cm of the alumina powder3。
The granularity of the metallic aluminium powder is -280 mesh；Mass percentage >=98.5% of Al in the metallic aluminium powder, it is living
Property aluminium content be greater than 98%, Fe mass percentage≤0.15%；Mass percentage≤0.2% of Si.
The granularity of the magnesia is -150 mesh；Fixed content of magnesia >=90%, the bulk density of the magnesia
3.65g/cm3。
The granularity of the metal magnesium powder is -180 mesh；Mass percentage >=99.5% of magnesium in the metal magnesium powder, pine
Bulk density 0.1%~0.75%, mass percentage≤0.2% of Fe；Mass percentage≤0.15% of Ca；The quality of Mn
Percentage composition≤0.1%.
The granularity of the calcium oxide is -150 mesh；Fixed calcium oxide content >=96%, the refractoriness > of the calcium oxide
1680℃。
The granularity of the metallic silicon is -130 mesh；Mass percentage≤0.2% of fixed silicone content >=98.3%, Fe,
Mass percentage≤0.3% of mass percentage≤0.1%, Al of Ca, the bulk density 2.26g/ of the metallic silicon
cm3。
The granularity of the vermiculite is 325 mesh；Mohs' hardness 1.1, fixed SiO2The quality percentage of content >=40%, MgO contains
Measure mass percentage≤0.15% of mass percentage≤0.20%, Ca of >=18%, Fe, the bulk density of the vermiculite
2.66g/cm3。
The preparation method of the described fever slugging coverture, by each raw material mixing granulation in proportion when preparation.
The present invention solve the problems, such as steel-making, in ironmaking processes ladle, ladle, tundish crust dross fever slugging covering
The preparation method of agent: preparing various raw materials according to the raw material proportioning ratio of present invention fever slugging coverture, then will be various
Raw material carries out being mixed to form rounded grain, is packed.
Product of the present invention solve the problems, such as steel-making, in ironmaking processes ladle, ladle, tundish crust dross fever slugging
The construction method of coverture:
1) according to the condition of production of steel-making, ironmaking, which is put into ladle, ladle, tundish；
2) construction is finished and can be produced.
Compared with prior art, the invention has the following advantages that
1, the present invention fever slugging coverture have shape it is reasonable, it is light-weight, be not tied up with, be free from environmental pollution, spreadability is good,
The advantages that heat insulation effect is good, at low cost reduces flue gas consumption, improves production safety coefficient, specifically, present invention solution steel-making,
Ladle in ironmaking processes, ladle, tundish crust dross problem fever slugging coverture ladle is added after can automatic crushing
It can be sprawled rapidly in molten steel surface, reach all standing to molten steel, formed three layers of melting structure, prevent secondary oxidation of steel and heat
Radiation is adsorbed molten steel surface nocuousness field trash (see Table 1 for details for the performance indicator of product of the present invention).
The physical and chemical index of 1 present invention fever slugging coverture of table
| Serial number | Project | Unit | Index |
| 1 | C | % | ≤2 |
| 2 | Al2O3 | % | ≥30 |
| 3 | CaO | % | ≥10 |
| 4 | MgO | % | ≥30 |
| 5 | Refractoriness | ℃ | ≥1850 |
2, during using fever slugging coverture of the invention, toxic gas, dust escaped quantity are zero, and noiseless produces
Raw, operation is convenient, can reduce environmental pollution, be conducive to environmental protection, social benefit is significant.
Specific embodiment
Below in conjunction with specific embodiment, the present invention is further described.Following embodiment be merely to illustrate the present invention rather than
For limiting the scope of the invention.
Such as " -280 mesh " representative is meant that less than or equal to 280 mesh in the present invention.
Embodiment 1
A kind of fever slugging coverture, is indicated with weight percentage, and the raw material group becomes alumina powder 13%, metal
Aluminium 23%, magnesia 12%, magnesium metal 20%, calcium oxide 6%, metallic silicon 7%, vermiculite 16%, ammonium nitrate 3%.
The granularity of the alumina powder is -300 mesh；Al in the alumina powder2O3Mass percentage >=80%,
Fe2O3Mass percentage≤2%；Bulk density >=2.9g/cm of the alumina powder3。
The granularity of the metallic aluminium powder is -280 mesh；Mass percentage >=98.5% of Al in the metallic aluminium powder, it is living
Property aluminium be greater than 98%, Fe mass percentage≤0.15%；Mass percentage≤0.2% of Si.
According to above-mentioned fever slugging coverture, the granularity of the magnesia is -150 mesh；Fixed content of magnesia >=
90%.The bulk density 3.65g/cm of the magnesia3。
The granularity of the metal magnesium powder is -180 mesh；Mass percentage >=99.5% of magnesium in the metal magnesium powder, pine
Bulk density 0.1~0.75%, mass percentage≤0.2% of Fe；Mass percentage≤0.15% of Ca；The quality hundred of Mn
Divide content≤0.1%.
According to above-mentioned fever slugging coverture, the granularity of the calcium oxide is -150 mesh；Fixed calcium oxide content >=
96%, 1680 DEG C of the refractoriness > of the calcium oxide.
According to above-mentioned fever slugging coverture, the granularity of the metallic silicon is -130 mesh；Fixed silicone content >=98.3%,
Mass percentage≤0.3% of mass percentage≤0.1%, Al of mass percentage≤0.2%, Ca of Fe, it is described
The bulk density 2.26g/cm of metallic silicon3。
According to above-mentioned fever slugging coverture, the granularity of the vermiculite is 325 mesh；Mohs' hardness 1.1, fixed SiO2Contain
The mass percentage of mass percentage≤0.20%, Ca of mass percentage >=18%, Fe of >=40%, MgO of amount≤
0.15%, the bulk density 2.66g/cm of the vermiculite3。
When preparation: various raw materials are prepared according to the raw material proportioning ratio of present invention fever slugging coverture, it then will be each
Kind raw material carries out being mixed to form rounded grain, is packed.
Product of the present invention solve the problems, such as steel-making, in ironmaking processes ladle, ladle, tundish crust dross fever slugging
The construction method of coverture:
1) according to the condition of production of steel-making, ironmaking, which is put into ladle, ladle, tundish；
2) construction is finished and can be produced.
Embodiment 2
A kind of fever slugging coverture, difference from Example 1 are: the raw material group become alumina powder 17%,
Metallic aluminium 7%, magnesia 19%, magnesium metal 22%, calcium oxide 6%, metallic silicon 7%, vermiculite 20%, ammonium nitrate 2%.Remaining is same
Embodiment 1.
Embodiment 3
A kind of fever slugging coverture, difference from Example 1 are: the raw material group become alumina powder 13%,
Metallic aluminium 7%, magnesia 14%, magnesium metal 26%, calcium oxide 13%, metallic silicon 9%, vermiculite 16%, ammonium nitrate 2%.Remaining
With embodiment 1.
Embodiment 4
A kind of fever slugging coverture, difference from Example 1 are: the raw material group become alumina powder 14%,
Metallic aluminium 10%, magnesia 19%, magnesium metal 8%, calcium oxide 12%, metallic silicon 14%, vermiculite 20%, ammonium nitrate 3%.Remaining
With embodiment 1.
Claims (9)
1. a kind of fever slugging coverture, which is characterized in that indicated with weight percentage, raw material group become alumina powder 13~
17%, metallic aluminium 7~23%, magnesia 12~19%, magnesium metal 8~26%, calcium oxide 6~13%, metallic silicon 7~14%, vermiculite 16
~20%, ammonium nitrate 2~3%.
2. fever slugging coverture as described in claim 1, which is characterized in that the granularity of the alumina powder is -300 mesh；
Al in the alumina powder2O3Mass percentage >=80%, Fe2O3 Mass percentage≤2%；The alumina powder
Bulk density >=2.9g/cm3。
3. fever slugging coverture as claimed in claim 2, which is characterized in that the granularity of the metallic aluminium powder is -280 mesh；
Mass percentage >=98.5% of Al in the metallic aluminium powder, mass percentage of the active aluminium content greater than 98%, Fe≤
0.15%；Mass percentage≤0.2% of Si.
4. fever slugging coverture as claimed in claim 3, which is characterized in that the granularity of the magnesia is -150 mesh；Gu
Determine content of magnesia >=90%, the bulk density 3.65g/cm of the magnesia3。
5. fever slugging coverture as claimed in claim 4, which is characterized in that the granularity of the metal magnesium powder is -180 mesh；
Mass percentage >=99.5% of magnesium in the metal magnesium powder, loose density 0.1%~0.75%, the mass percentage of Fe≤
0.2%；Mass percentage≤0.15% of Ca；Mass percentage≤0.1% of Mn.
6. fever slugging coverture as claimed in claim 5, which is characterized in that the granularity of the calcium oxide is -150 mesh；Gu
Determine calcium oxide content >=96%, 1680 DEG C of the refractoriness > of the calcium oxide.
7. fever slugging coverture as claimed in claim 6, which is characterized in that the granularity of the metallic silicon is -130 mesh；Gu
The quality percentage for determining mass percentage≤0.1%, Al of mass percentage≤0.2%, Ca of silicone content >=98.3%, Fe contains
Amount≤0.3%, the bulk density 2.26g/cm of the metallic silicon3。
8. fever slugging coverture as claimed in claim 7, which is characterized in that the granularity of the vermiculite is 325 mesh；Mohs is hard
Degree 1.1, fixed SiO2The matter of mass percentage≤0.20%, Ca of mass percentage >=18%, Fe of content >=40%, MgO
Measure percentage composition≤0.15%, the bulk density 2.66g/cm of the vermiculite3。
9. the preparation method of any fever slugging coverture of claim 1-8, which is characterized in that by each raw material when preparation
Mixing granulation in proportion.
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| CN2017106859900 | 2017-08-11 | ||
| CN201710685990 | 2017-08-11 |
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| CN110306093A (en) * | 2019-08-16 | 2019-10-08 | 郑州东升冶金新材料有限公司 | A kind of high-performance heat retaining and exothermal material and preparation method thereof |
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| RU2252265C1 (en) * | 2004-07-13 | 2005-05-20 | ООО "Промышленная компания "Вторалюминпродукт" | Exothermic mixture for steel deoxidation, refining, inoculation and alloying |
| CN1788880B (en) * | 2004-12-14 | 2010-08-11 | 上海盘龙实业有限公司 | Dual-functional composite solid protective slag for stainless steel die casting |
| CN100350060C (en) * | 2006-03-08 | 2007-11-21 | 许震 | High-efficient metallurgical refiner and preparation thereof |
| JP5434258B2 (en) * | 2009-05-20 | 2014-03-05 | Ｊｆｅスチール株式会社 | Thermal insulation for molten metal |
| CN101787413B (en) * | 2009-09-11 | 2011-11-02 | 马鞍山中冶钢铁冶金高新技术有限公司 | Granular heat-preserving covering flux for hot metal in steelmaking |
| CN101905294B (en) * | 2010-07-15 | 2012-01-18 | 沈阳东大高温材料有限公司 | Method for preparing high-performance heat-generating agent |
| CN102825218A (en) * | 2012-07-31 | 2012-12-19 | 马鞍山科润冶金材料有限公司 | Composite exothermic agent for high-manganese wear resistant steel |
| CN105463158B (en) * | 2015-11-30 | 2017-07-21 | 鞍山天祥冶金材料有限公司 | A kind of environment-friendly type submerged arc heat-storage agent and preparation method thereof |
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