CN105152662B - Medium frequency induction furnace body dry type ramming material - Google Patents
Medium frequency induction furnace body dry type ramming material Download PDFInfo
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- CN105152662B CN105152662B CN201510623838.0A CN201510623838A CN105152662B CN 105152662 B CN105152662 B CN 105152662B CN 201510623838 A CN201510623838 A CN 201510623838A CN 105152662 B CN105152662 B CN 105152662B
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Abstract
The present invention relates to intermediate frequency furnace fire resisting material field, especially a kind of Medium frequency induction furnace body dry type ramming material.The technical problems to be solved by the invention be to provide it is a kind of can realize production cost reduction Medium frequency induction furnace body dry type ramming material.Medium frequency induction furnace body dry type ramming material, the ramming mass is made up of following component by mass percentage：Useless magnesite-chrome brick particle 75~85%, magnesia stamp mass 10%~25%, silicon powder 2%~5%, boric acid 0.5%~1%.The invention is primary raw material using the useless magnesite-chrome brick reclaimed, takes full advantage of discarded secondary resource.Cost of manufacture can significantly be reduced by producing the product of same quality, obvious economic benefit is brought for enterprise, in addition, the development in science and technology trend of energy-conserving and environment-protective is also conformed to, therefore, the present invention has very wide market promotion prospect, is particularly suitable for use in the preparation technology of Medium frequency induction furnace body dry type ramming material.
Description
Technical field
The present invention relates to intermediate frequency furnace fire resisting material field, especially a kind of Medium frequency induction furnace body dry type ramming
Material.
Background technology
With expanding economy, intermediate frequency furnace smelts more and more universal, and it turns into casting industry, stainless steel smelting
Refine one of main smelting equipment that industry and special alloy are smelted.The quality of intermediate frequency furnace furnace lining quality directly determines that it makes
With life-span and the height of production efficiency.Intermediate frequency furnace is smelted has flow short compared to other smelting processes, produces easy to adjust
Characteristic, but intermediate frequency furnace is complicated, induction coil water flowing cooling, it is higher to intermediate frequency furnace ramming mass quality requirement.If dry type
, easily there are the security incidents such as bleed-out, blast in ramming mass poor quality.It is quick with mini-mill steelmaking and stainless steel smelting
Development, it is increasing to high-quality intermediate frequency furnace dry type ramming material demand.
At present, intermediate frequency furnace body is generally knotted with dry type ramming material using corundum and alumina as aggregate, but the party
Formula production cost is too high.Under current steel industry situation, while ramming mass quality is ensured, how intermediate frequency is effectively reduced
Furnace body ramming mass production cost is particularly important.To overcome problem above, the present invention uses the useless magnesite-chrome brick reclaimed to be main former
Material, makes full use of discarded secondary resource, serves good environmental benefit, meanwhile, ramming mass produced by the invention and the same industry
In directly using corundum and alumina be that main aggregate is compared, the life-span also increases, and production cost is greatly lowered, economic benefit
Significantly
The content of the invention
The technical problems to be solved by the invention be to provide it is a kind of can realize production cost reduction intermediate frequency furnace stove
Body dry type ramming material.
The technical solution adopted for the present invention to solve the technical problems is：Medium frequency induction furnace body dry type ramming material, institute
Ramming mass is stated to be made up of following component by mass percentage：Useless magnesite-chrome brick particle 75~85%, magnesia stamp mass 10%~
25%, silicon powder 2%~5%, boric acid 0.5%~1%.
It is further that the useless magnesite-chrome brick particle grade is made up of 0~1mm, 1~3mm and 3~8mm, wherein 0~1mm
Moiety by weight is than 10~25%, and 1~3mm moiety by weight is than 5~15%, and 3~8mm moiety by weight is than 40~55%.
Be further, the chemical composition of the useless magnesite-chrome brick for MgO >=60%, Cr2O3 >=15%, Fe2O3≤
1.2%.
It is further that described its chemical composition of magnesia stamp mass is MgO >=85%；Silicon powder SiO2 >=92%.
The beneficial effects of the invention are as follows：The invention is primary raw material using the useless magnesite-chrome brick reclaimed, fully profit
With discarded secondary resource.Cost of manufacture can significantly be reduced by producing the product of same quality, be that enterprise brings substantially
Economic benefit, in addition, also conformed to the development in science and technology trend of energy-conserving and environment-protective, therefore, the present invention has very wide market
Promotion prospect, is particularly suitable for use in the preparation technology of Medium frequency induction furnace body dry type ramming material.
Embodiment
Medium frequency induction furnace body dry type ramming material, the ramming mass is made up of following component by mass percentage：
Useless magnesite-chrome brick particle 75~85%, magnesia stamp mass 10%~25%, silicon powder 2%~5%, boric acid 0.5%~1%.Typically
, intermediate frequency furnace body is with the technological process of the preparation of dry type ramming material:Raw material selection-the mixer of dispensing one stirring one is packed
One shipping one is stirred one vibration moulding-baking one using scene one and used.The useless magnesite-chrome brick used in the present invention, it is mainly changed
Learning composition is：MgO >=60%, Cr2O3 >=15%, Fe2O3≤1.2%.Need that the removal of slag iron position will be contained in selection, in processing
Into each grade, the grade processed need to pass through magnetic separation process, remove the iron compound being wherein mingled with.Further, it is described useless
Magnesite-chrome brick particle grade is made up of 0~1mm, 1~3mm and 3~8mm, wherein 0~1mm moiety by weight is than 10~25%, 1~3mm
Moiety by weight is than 5~15%, and 3~8mm moiety by weight is than 40~55%.Described its chemical composition of magnesia stamp mass be MgO >=
85%；Silicon powder SiO2 >=92%.In addition, silicon powder can play the effect of high temperature sintering aid.
Embodiment
Embodiment 1
It is made with the raw material of weight proportion：Useless magnesite-chrome brick 0~1mm of particle ratios 20%, 1~3mm ratios 15% and 3~
8mm ratios 47%；Magnesia stamp mass 15%；Silicon powder 3%；Boric acid 0.5% (additional).
After this product intermediate frequency furnace dry type ramming material sintering, stove village from inside to outside, forms certain thickness sinter layer, half sintering
Layer and unconsolidated formation.Sinter layer densification is hard, can keep out the infiltration and erosion of molten metal, temperature in use is up to more than 1800 DEG C, stove
Age, price was low compared with like product by 40% up to more than 100 times.
Properties of product：110 DEG C of bulk densities are more than 2.6g/cm3, and 110 DEG C of drying compressive resistances are more than 20Mpa, 850 DEG C of bars
Compressive resistance is more than 50Mpa after being incubated 3 hours under part；Insulation 3 is small under the conditions of 110 DEG C of drying rupture strengths are more than 4Mpa, 850 DEG C
When after rupture strength be more than 8Mpa, refractoriness be more than 1790 DEG C.
Embodiment 2
It is made with the raw material of weight proportion：Useless magnesite-chrome brick 0~1mm of particle ratios 15%, 1~3mm ratios 10% and 3~
8mm ratios 50%；Magnesia stamp mass 23%；Silicon powder 2%；Boric acid 0.5% (additional).
After this product intermediate frequency furnace dry type ramming material sintering, stove village from inside to outside, forms certain thickness sinter layer, half sintering
Layer and unconsolidated formation.Sinter layer densification is hard, can keep out the infiltration and erosion of molten metal, temperature in use is up to more than 1800 DEG C, stove
Age, price was low compared with like product by 40% up to more than 110 times.
Properties of product：110 DEG C of bulk densities are more than 2.7g/cm3, 110 DEG C of drying compressive resistances are more than 30Mpa, 850 DEG C of bars
Compressive resistance is more than 60Mpa after being incubated 3 hours under part；Insulation 3 is small under the conditions of 110 DEG C of drying rupture strengths are more than 5Mpa, 850 DEG C
When after rupture strength be more than 8Mpa, refractoriness be more than 1790 DEG C.
Embodiment 3
It is made with the raw material of weight proportion：Useless magnesite-chrome brick 0~1mm of particle ratios 25%, 1~3mm ratios 10% and 3~
8mm ratios 45%；Magnesia stamp mass 16%；Silicon powder 4%；Boric acid 1% (additional).
After this product intermediate frequency furnace dry type ramming material sintering, stove village from inside to outside, forms certain thickness sinter layer, half sintering
Layer and unconsolidated formation.Sinter layer densification is hard, can keep out the infiltration and erosion of molten metal, temperature in use is up to more than 1800 DEG C, stove
Age, price was low compared with like product by 40% up to more than 80 times.
Properties of product：110 DEG C of bulk densities are more than 2.5g/cm3, 110 DEG C of drying compressive resistances are more than 20Mpa, 850 DEG C of bars
Compressive resistance is more than 45Mpa after being incubated 3 hours under part；Insulation 3 is small under the conditions of 110 DEG C of drying rupture strengths are more than 4Mpa, 850 DEG C
When after rupture strength be more than 7Mpa, refractoriness be more than 1790 DEG C.
Claims (4)
1. Medium frequency induction furnace body dry type ramming material, it is characterised in that the ramming mass is by mass percentage by following
Component is constituted：Useless magnesite-chrome brick particle 75~85%, magnesia stamp mass 10%~25%, silicon powder 2%~5%, boric acid 0.5%~
1%.
2. Medium frequency induction furnace body dry type ramming material as claimed in claim 1, it is characterised in that：The useless magnesite-chrome brick particle
Grade is made up of 0~1mm, 1~3mm and 3~8mm, wherein 0~1mm moiety by weight is than 10~25%, 1~3mm moiety by weight ratio
5~15%, 3~8mm moiety by weight are than 40~55%.
3. Medium frequency induction furnace body dry type ramming material as claimed in claim 1, it is characterised in that：The change of the useless magnesite-chrome brick
Study and be divided into MgO >=60%, Cr2O3 >=15%, Fe2O3≤1.2%.
4. the Medium frequency induction furnace body dry type ramming material as described in claim 1,2 or 3, it is characterised in that：It is described magnesia to beat
Its chemical composition of ramming material is MgO >=85%；Silicon powder SiO2 >=92%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201510623838.0A CN105152662B (en) | 2015-09-25 | 2015-09-25 | Medium frequency induction furnace body dry type ramming material |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510623838.0A CN105152662B (en) | 2015-09-25 | 2015-09-25 | Medium frequency induction furnace body dry type ramming material |
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| CN105152662A CN105152662A (en) | 2015-12-16 |
| CN105152662B true CN105152662B (en) | 2017-09-29 |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106588048A (en) * | 2016-12-13 | 2017-04-26 | 攀枝花钢城集团有限公司 | Steelmaking tundish guard plate and castable therefor |
| CN107903040A (en) * | 2017-11-22 | 2018-04-13 | 海城利尔麦格西塔材料有限公司 | A kind of magnesium chromium matter ramming mass and production method for liquid steel refining stove furnace bottom |
| CN107954730A (en) * | 2017-12-11 | 2018-04-24 | 攀枝花钢城集团有限公司 | Intermediate frequency furnace converter nose dry type ramming material and preparation method thereof |
| CN108530038B (en) * | 2018-06-08 | 2021-04-06 | 大冶有色金属有限责任公司 | Anode furnace bottom protective lining composition |
| CN113620692B (en) * | 2021-09-02 | 2023-06-23 | 河南瑞泰节能新技术有限公司 | Dry magnesium-chromium ramming mass |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0645503B2 (en) * | 1986-03-03 | 1994-06-15 | 黒崎窯業株式会社 | Magnesia-chrome brick with excellent structural spalling resistance |
| CN100339170C (en) * | 2005-10-14 | 2007-09-26 | 河北理工大学 | Dry type working liner material for erosion resistance continuous casting tundish |
| CN102391003B (en) * | 2011-08-05 | 2013-09-04 | 海城市中兴镁质合成材料有限公司 | MgO-Cr2O3 ramming material for VOD (Vacuum Oxygen Decarburization) steel ladle safety liner |
| CN104402472A (en) * | 2014-11-26 | 2015-03-11 | 攀枝花钢城集团有限公司 | Tundish dry vibrating refractory and preparation method, as well as special additive and preparation method |
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