CN100348546C - Method for preparing middle ladle dry vabrative material - Google Patents
Method for preparing middle ladle dry vabrative material Download PDFInfo
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- CN100348546C CN100348546C CNB2006100185037A CN200610018503A CN100348546C CN 100348546 C CN100348546 C CN 100348546C CN B2006100185037 A CNB2006100185037 A CN B2006100185037A CN 200610018503 A CN200610018503 A CN 200610018503A CN 100348546 C CN100348546 C CN 100348546C
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- Prior art keywords
- sodium metasilicate
- forsterite
- magnesite
- tundish dry
- vibration material
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Abstract
The present invention relates to a preparation method for a tundish dry vibration material. The present invention has the technical scheme that 85 to 97% of magnesite or forsterite and 3 to 15% of sodium metasilicate are mixed according to weight percentage content, and after the magnesite or the forsterite and the sodium metasilicate are uniformly stirred, the vibration molding of the magnesite or the forsterite and the sodium metasilicate is carried out through a fetal membrane; the magnesite or the forsterite and the sodium metasilicate are baked at 100 to 400 DEG C and demoulded, and the tundish dry vibration material is obtained. The weight percentage content of magnesite or forsterite with the grain composition of 2 to 0.088mm is from 80 to 90%, and the weight percentage content of magnesite or forsterite with the grain composition less than 0.088mm is from 10 to 20%. In the method of the present invention, the sodium metasilicate is used as a binding agent, and because the sodium metasilicate is an inorganic salt without toxicity, taste or public nuisance, the sodium metasilicate can be melted at a low temperature in the process of baking. The sodium metasilicate continuously polymerizes by following the rising of the temperature so as to make a construction body generate strength. Therefore, the obtained tundish dry vibration material has no penetrating odor, the tundish dry vibration material can not add carbon or hydrogen to molten steel, and the tundish dry vibration material has favorable erosion resistance. The tundish dry vibration material is easy to disintegrate and is environment friendly.
Description
One, technical field
The invention belongs to the unshape refractory technical field.Relate in particular to a kind of preparation method of tundish dry vibratory material.
Two, background technology
That the tundish working lining plays in continuous casting production process is high temperature resistant, the effect of slag corrosion resistance, heat-insulation and heat-preservation, and along with the growth day by day of Clean Steel and steel alloy demand, tundish also becomes in the process for making the final key link to steel secondary refining simultaneously.The tundish working lining changes magnesia, the calcareous unshape refractory of magnesium into by silica heat-insulating plate, form of construction work by build by laying bricks or stones change into manual smear, mechanically spraying, along with quoting of quick replacing mouth of a river technology, developed tundish dry vibratory material.As " continuous casting tundish alkaline dry working lining " (CN01115190.0) technology, be unsetting composition based on magnesia, its component is the percentage composition meter by weight: magnesia 85～95%, boride 0.5～3.0%, thermoplastic material 2～10%, phosphoric acid salt 1～3%, fluorochemical 1～3%; " the calcareous dry-type working lining of a kind of novel tundish magnesium " (CN 02117935.2) technology, with synthetic magnesia-calcium clinker, passivation dolomite sand, passive lime stone sand, calcined dolomite sand, lime kilning stone sand etc. is calcareous raw material, with iron scale, clay, silicon powder etc. is sintering aid, with resin, malt sugar, PVC is wedding agent, make the dry type inner lining material through uniform mixing, at the scene by the construction of tundish mould tire, and with 150～350 ℃ of bakings 1～3 hour, take off the mould tire, working lining; " continuous casting tundish working lining " (CN 02116839.3) technology, magnesia 80～95%, alumina 1～10%, soft clay 1～5%, organic thermoplastic compound 2～15%; " a kind of novel tundish dry working lining " (CN1459345A) and " a kind of continuous casting with tundish dry vibratory material and preparation method thereof " (CN200410061192.3) technology, with magnesia, olivine sand, synthetic magnesia-calcium clinker, passivation dolomite sand, calcining olivine sand is basic raw material, with Tai-Ace S 150, polymerize aluminum chloride, halogen, water glass and carbamate additives for low phosphorus hydrochlorate etc. is wedding agent, with iron scale, clay, silicon powder is sintering aid, makes the dry type inner lining material through uniform mixing.
In the above-mentioned tundish dry vibratory material because can not form a large amount of eutectics under the not moisture and high temperature, though prolong work-ing life.But the carbon after the wedding agent resol charing of this kind dry type material, hydrogen can obviously be given molten steel recarburization, increase hydrogen, volatilize irritating smell during bakings such as resol and phosphoric acid salt, oxymuriate, vitriol from material, also contaminate environment.Therefore, restricting the further popularization of this dry-type vibration material in soft steel, ultra low-carbon steel are smelted.
Three, summary of the invention
The object of the invention provides and a kind ofly has no irritating odor, can not increase hydrogen, good, the preparation method easy, eco-friendly tundish dry vibratory material of disintegrating of erosion-resisting characteristics to molten steel recarburization.
For finishing above-mentioned task, the technical solution adopted in the present invention is: percentage composition mixes 85～97% magnesia or forsterite with 3～15% Starso by weight, adopt fetal membrane vibratory compaction after stirring, 100～400 ℃ of bakings, the demoulding obtains tundish dry vibratory material.
The weight percentage of the grain composition of magnesia or forsterite is: 2～0.088mm is 80～90%,＜0.088mm is 10～20%.
It is wedding agent that the present invention adopts Starso because Starso is a kind of nontoxic, tasteless, non-harmful inorganic salt, so but in bake process cold melt, with the temperature continuous polymerization that raises, make construction body generation intensity.Therefore, the tundish dry vibratory material that is obtained does not have irritating smell, can not increase hydrogen to molten steel recarburization, and erosion-resisting characteristics is good, is easy to disintegrate environmental friendliness yet.
Four, embodiment
[embodiment] 1 one kinds of preparation methods that use tundish dry vibratory material at 28 tons of continuous castings
In weight percentage: containing MgO and be 97% magnesite clinker is 90%, Starso 10%.Wherein the weight percentage of the grain composition of magnesite clinker is: 1～0.088mm is 80～85%,＜0.088mm is 15～20%.Above-mentioned raw materials is mixed, adopt fetal membrane vibratory compaction after stirring, 110～300 ℃ of bakings, the demoulding obtains the tundish liner.
It surveys index: MgO is 89.4%, SiO
2Be 6.2%; Volume density: 110 ℃ * 24h 2.18g/cm
3Compressive strength: 110 ℃ * 24h3.6MPa, 1500 ℃ * 3h burns back 7.3MPa; The line velocity of variation: 1500 ℃ * 3h burns back-1.2%.This kind material uses on 28 tons of continuous casting tundish, and the life-span can reach more than 26 stoves.
The characteristics that present embodiment has are: 1. easy construction; But 2. quick baking and having no burst, spalling, storing time is short, and odorlessness; 3. erosion-resisting characteristics is good, long service life; 4. do not have carburetting, increase the hydrogen phenomenon, thereby can not pollute molten steel; 5. the performance of disintegrating is good, can realize turning over automatically bag.
Claims (2)
1, a kind of preparation method of tundish dry vibratory material is characterized in that percentage composition by weight mixes 85～97% magnesia or forsterite with 3～15% Starso, and fetal membrane vibratory compaction is adopted in the back that stirs, in 100～400 ℃ of bakings, the demoulding.
2, the preparation method of tundish dry vibratory material according to claim 1 is characterized in that the weight percentage of the grain composition of described magnesia or forsterite is: 2～0.088mm is 80～90%,＜0.088mm is 10～20%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100185037A CN100348546C (en) | 2006-03-09 | 2006-03-09 | Method for preparing middle ladle dry vabrative material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100185037A CN100348546C (en) | 2006-03-09 | 2006-03-09 | Method for preparing middle ladle dry vabrative material |
Publications (2)
| Publication Number | Publication Date |
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| CN1821178A CN1821178A (en) | 2006-08-23 |
| CN100348546C true CN100348546C (en) | 2007-11-14 |
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Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101921119B (en) * | 2010-07-07 | 2013-06-05 | 德清县凯瑞新材料有限公司 | Environmental-friendly dry type vibrating material |
| CN102010215A (en) * | 2010-12-17 | 2011-04-13 | 武汉科技大学 | Tundish dry type vibration material taking waste magnesia carbon bricks as raw materials and preparation method thereof |
| CN102167603A (en) * | 2010-12-28 | 2011-08-31 | 攀枝花钢城集团有限公司 | Additive for pouring box dry vibrating material and preparation method and application thereof |
| CN102180683A (en) * | 2011-03-08 | 2011-09-14 | 武汉科技大学 | Magnesium-calcium tundish dry vibrating material and preparation method thereof |
| CN112341216B (en) * | 2020-10-30 | 2022-07-19 | 北京联合荣大工程材料股份有限公司 | Self-curing tundish dry material and preparation method thereof |
| CN113200755B (en) * | 2021-04-20 | 2022-11-01 | 武汉钢铁集团耐火材料有限责任公司 | Environment-friendly continuous casting tundish dry material and preparation method thereof |
| 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 |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1651352A (en) * | 2004-11-26 | 2005-08-10 | 武汉科技大学 | Tundish dry ribration material for continuous casting and its preparation method |
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Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1651352A (en) * | 2004-11-26 | 2005-08-10 | 武汉科技大学 | Tundish dry ribration material for continuous casting and its preparation method |
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| CN1821178A (en) | 2006-08-23 |
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