CN105152662A - Dry ramming material for furnace body of medium-frequency induction furnace - Google Patents
Dry ramming material for furnace body of medium-frequency induction furnace Download PDFInfo
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- CN105152662A CN105152662A CN201510623838.0A CN201510623838A CN105152662A CN 105152662 A CN105152662 A CN 105152662A CN 201510623838 A CN201510623838 A CN 201510623838A CN 105152662 A CN105152662 A CN 105152662A
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Abstract
The invention relates to the field of medium-frequency induction furnace refractory materials, in particular to a dry ramming material for a furnace body of a medium-frequency induction furnace. In order to solve the technical problems, the dry ramming material which can reduce production cost is provided. The dry ramming material is prepared from, by mass, 75-85% of waste magnesite-chrome brick particles, 10-25% of magnesium knotting material, 2-5% of silica powder and 0.5-1% of boric acid. Recycled waste magnesite-chrome bricks are innovatively used as the main raw material, and waste secondary resources are fully used. Manufacturing cost can be greatly reduced while products of the same quality are produced, and remarkable economic benefits are brought to enterprises; in addition, the dry ramming material conforms to the energy conservation and environment protection scientific development tendency, accordingly has quite wide market popularization prospects and is particularly suitable for the preparation process of the dry ramming material for the furnace of the medium-frequency induction furnace.
Description
Technical field
The present invention relates to medium-frequency induction furnace fire resisting material field, especially a kind of Medium frequency induction furnace body dry type ramming material.
Background technology
Along with expanding economy, medium-frequency induction furnace is smelted more and more general, and it has become one of main smelting equipment of casting industry, stainless steel smelting industry and special alloy smelting.The quality of medium-frequency induction furnace furnace lining quality directly determines the height of its work-ing life and production efficiency.Intermediate frequency furnace is smelted and is compared other smelting technologyes to have flow process short, produces characteristic easy to adjust, but intermediate frequency furnace complex structure, and ruhmkorff coil water flowing cools, higher to intermediate frequency furnace ramming mass specification of quality.If dry type ramming material poor quality, very easily there is the security incident such as bleed-out, blast.Along with the fast development of mini-mill steelmaking and stainless steel smelting, increasing to high-quality intermediate frequency furnace dry type ramming material demand.
At present, intermediate frequency furnace body dry type ramming material generally adopts corundum and alumina to tie a knot as aggregate, but which production cost is too high.Under current steel industry situation, while guarantee ramming mass quality, how effectively to reduce intermediate frequency furnace body ramming mass production cost particularly important.For overcoming above problem, the present invention adopts the useless magnesia chrome brick of recovery to be main raw material, make full use of discarded secondary resource, serve good environmental benefit, meanwhile, the ramming mass that the present invention produces directly uses corundum and alumina to be that main aggregate is compared with the same industry, and the life-span also increases, production cost significantly reduces, remarkable in economical benefits
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of Medium frequency induction furnace body dry type ramming material that can realize production cost and reduce.
The technical solution adopted for the present invention to solve the technical problems is: Medium frequency induction furnace body dry type ramming material, described ramming mass is made up of following component by mass percentage: useless magnesia chrome brick particle 75 ~ 85%, magnesia stamp mass 10% ~ 25%, silicon powder 2% ~ 5%, boric acid 0.5% ~ 1%.
Further, described useless magnesia chrome brick particle grade is made up of 0 ~ 1mm, 1 ~ 3mm and 3 ~ 8mm, and 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%.
Further, the chemical composition of described useless magnesia chrome brick is MgO >=60%, Cr2O3 >=15%, Fe2O3≤1.2%.
Further, described its chemical composition of magnesia stamp mass is MgO >=85%; Silicon powder SiO2 >=92%.
The invention has the beneficial effects as follows: the useless magnesia chrome brick that the utilization of the invention is reclaimed is main raw material, takes full advantage of discarded secondary resource.The product producing same quality significantly can reduce cost of manufacture, for enterprise brings obvious economic benefit, in addition, also the development in science and technology trend of energy-conserving and environment-protective has been complied with, therefore, the present invention has very wide marketing prospect, is particularly useful in the preparation technology of Medium frequency induction furnace body dry type ramming material.
Embodiment
Medium frequency induction furnace body dry type ramming material, described ramming mass is made up of following component by mass percentage: useless magnesia chrome brick particle 75 ~ 85%, magnesia stamp mass 10% ~ 25%, silicon powder 2% ~ 5%, boric acid 0.5% ~ 1%.General, the technical process of the preparation of intermediate frequency furnace body dry type ramming material is: a raw material stirrer of choose-preparing burden stirs packaging one shipping one and uses on-the-spot one to stir vibratory compaction-baking one use.The useless magnesia chrome brick used in the present invention, its primary chemical consists of: MgO >=60%, Cr2O3 >=15%, Fe2O3≤1.2%.Slag inclusion iron position need be removed when choosing, being processed into each grade, the grade processed through magnetic separation operation, need remove the iron compound be wherein mingled with.Further, described useless magnesia chrome brick particle grade is made up of 0 ~ 1mm, 1 ~ 3mm and 3 ~ 8mm, and 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%.Described its chemical composition of magnesia stamp mass is MgO >=85%; Silicon powder SiO2 >=92%.In addition, silicon powder can play the effect of high temperature sintering agent.
Embodiment
Embodiment 1
Obtain with the raw material of weight proportion: useless magnesia chrome brick particle 0 ~ 1mm ratio 20%, 1 ~ 3mm ratio 15% and 3 ~ 8mm ratio 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 sintered layer, half sintered layer and unconsolidated formation.Sintered layer densification is hard, and can keep out infiltration and the erosion of molten metal, use temperature can reach more than 1800 DEG C, and furnace life can reach more than 100 times, and price comparatively like product is low by 40%.
Product performance: 110 DEG C of volume densities are greater than 2.6g/cm3, dry compressive strength for 110 DEG C and be greater than 20Mpa, after being incubated 3 hours under 850 DEG C of conditions, compressive strength is greater than 50Mpa; Dry folding strength for 110 DEG C and be greater than 4Mpa, after being incubated 3 hours under 850 DEG C of conditions, folding strength is greater than 8Mpa, and refractoriness is greater than 1790 DEG C.
Embodiment 2
Obtain with the raw material of weight proportion: useless magnesia chrome brick particle 0 ~ 1mm ratio 15%, 1 ~ 3mm ratio 10% and 3 ~ 8mm ratio 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 sintered layer, half sintered layer and unconsolidated formation.Sintered layer densification is hard, and can keep out infiltration and the erosion of molten metal, use temperature can reach more than 1800 DEG C, and furnace life can reach more than 110 times, and price comparatively like product is low by 40%.
Product performance: 110 DEG C of volume densities are greater than 2.7g/cm
3, dry compressive strength for 110 DEG C and be greater than 30Mpa, after being incubated 3 hours under 850 DEG C of conditions, compressive strength is greater than 60Mpa; Dry folding strength for 110 DEG C and be greater than 5Mpa, after being incubated 3 hours under 850 DEG C of conditions, folding strength is greater than 8Mpa, and refractoriness is greater than 1790 DEG C.
Embodiment 3
Obtain with the raw material of weight proportion: useless magnesia chrome brick particle 0 ~ 1mm ratio 25%, 1 ~ 3mm ratio 10% and 3 ~ 8mm ratio 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 sintered layer, half sintered layer and unconsolidated formation.Sintered layer densification is hard, and can keep out infiltration and the erosion of molten metal, use temperature can reach more than 1800 DEG C, and furnace life can reach more than 80 times, and price comparatively like product is low by 40%.
Product performance: 110 DEG C of volume densities are greater than 2.5g/cm
3, dry compressive strength for 110 DEG C and be greater than 20Mpa, after being incubated 3 hours under 850 DEG C of conditions, compressive strength is greater than 45Mpa; Dry folding strength for 110 DEG C and be greater than 4Mpa, after being incubated 3 hours under 850 DEG C of conditions, folding strength is greater than 7Mpa, and refractoriness is greater than 1790 DEG C.
Claims (4)
1. Medium frequency induction furnace body dry type ramming material, is characterized in that, described ramming mass is made up of following component by mass percentage: useless magnesia 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 characterized in that: described useless magnesia 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%.
3. Medium frequency induction furnace body dry type ramming material as claimed in claim 1, is characterized in that: the chemical composition of described useless magnesia chrome brick is 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, is characterized in that: described its chemical composition of magnesia stamp mass is MgO >=85%; Silicon powder SiO2 >=92%.
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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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| CN201510623838.0A CN105152662B (en) | 2015-09-25 | 2015-09-25 | Medium frequency induction furnace body dry type ramming material |
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| CN105152662A true CN105152662A (en) | 2015-12-16 |
| CN105152662B CN105152662B (en) | 2017-09-29 |
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Cited By (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 |
| CN108530038A (en) * | 2018-06-08 | 2018-09-14 | 大冶有色金属有限责任公司 | A kind of anode furnace furnace bottom shield lining composition |
| CN113620692A (en) * | 2021-09-02 | 2021-11-09 | 河南瑞泰节能新技术有限公司 | Dry magnesium-chromium ramming mass |
Citations (4)
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| JPS62202857A (en) * | 1986-03-03 | 1987-09-07 | 黒崎窯業株式会社 | Anti-structure-spalling magnesia chromium base brick |
| CN1800105A (en) * | 2005-10-14 | 2006-07-12 | 河北理工大学 | Dry type working liner material for erosion resistance continuous casting tundish |
| CN102391003A (en) * | 2011-08-05 | 2012-03-28 | 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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2015
- 2015-09-25 CN CN201510623838.0A patent/CN105152662B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| JPS62202857A (en) * | 1986-03-03 | 1987-09-07 | 黒崎窯業株式会社 | Anti-structure-spalling magnesia chromium base brick |
| CN1800105A (en) * | 2005-10-14 | 2006-07-12 | 河北理工大学 | Dry type working liner material for erosion resistance continuous casting tundish |
| CN102391003A (en) * | 2011-08-05 | 2012-03-28 | 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 |
Cited By (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 |
| CN108530038A (en) * | 2018-06-08 | 2018-09-14 | 大冶有色金属有限责任公司 | A kind of anode furnace furnace bottom shield lining composition |
| CN113620692A (en) * | 2021-09-02 | 2021-11-09 | 河南瑞泰节能新技术有限公司 | Dry magnesium-chromium ramming mass |
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| CN105152662B (en) | 2017-09-29 |
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Effective date of registration: 20210810 Address after: 617063 Panzhihua Steel City Group ruikuang Industry Co., Ltd., Longqing Road, Guaziping, East District, Panzhihua City, Sichuan Province Patentee after: PANZHIHUA GANGCHENG GROUP RUIKUANG INDUSTRY Co.,Ltd. Address before: 617023, kapok Road, 72, Panzhihua, Sichuan Patentee before: PANZHIHUA GANGCHENG GROUP Co.,Ltd. |