CN1651352A - Tundish dry ribration material for continuous casting and its preparation method - Google Patents
Tundish dry ribration material for continuous casting and its preparation method Download PDFInfo
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- CN1651352A CN1651352A CNA2004100611923A CN200410061192A CN1651352A CN 1651352 A CN1651352 A CN 1651352A CN A2004100611923 A CNA2004100611923 A CN A2004100611923A CN 200410061192 A CN200410061192 A CN 200410061192A CN 1651352 A CN1651352 A CN 1651352A
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- tundish
- continuous casting
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- dry type
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Abstract
A lining material of tundish for conticasting is prepared from 6 primary raw materials including sintered magnesium sand, electrosmelted magnesium sand, forsterite, light forsterite, etc and 9 secondary raw materials including water glass, sodium tripolyphosphate, dextrin, starch, etc through proportionally mixing, stirring, loading in mould, vibrating, baking at 150-400 deg.C and demoulding.
Description
One, technical field
The invention belongs to the unshape refractory technical field.Relate in particular to a kind of continuous casting tundish dry material and technology of preparing thereof.
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, easy construction, tundish prolongs work-ing life, molten steel obtains certain purification.In recent years owing to change quoting of mouth of a river technology fast, require tundish further to improve work-ing life, therefore developed resol bonded tundish dry vibratory material.As " continuous casting tundish alkaline dry working lining " technology (CN 01115190.0), be unsetting composition based on magnesia, its component is by weight percentage: 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 " technology (CN 02117935.2) and for example, 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 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; For another " continuous casting tundish working lining " technology (CN 02116839.3), magnesia 80～95%, alumina 1～10%, soft clay 1～5%, organic thermoplastic compound 2～15%.
In the above-mentioned dry-type vibration material because can not form a large amount of eutectics under the not moisture and high temperature, so prolong work-ing life greatly.But, carbon after the wedding agent resol charing of this kind dry type material, hydrogen can obviously be given molten steel recarburization, increase hydrogen, and volatilize irritating smell during baking 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 a kind ofly to be had easy construction, storing time weak point, long service life, turns over and contain easily, have no irritating odor, can not increase the continuous casting tundish environment-protection dry type vibrating material that hydrogen, erosion-resisting characteristics are good, be easy to disintegrate to molten steel recarburization.
For finishing above-mentioned task, the technical solution adopted in the present invention is: percentage composition meter by weight, and main raw material with 90～95% and 5～10% auxiliary material mix, and fetal membrane vibratory compaction is adopted in the back that stirs, 150～400 ℃ of bakings, the demoulding obtains the tundish liner; Wherein
---the composition and the weight percentage of main raw material be, magnesite clinker is 0～95%, electrosmelted magnesite clinker is 0～95%, lightweight magnesia is 0～50%, light-burning magnesium powder is 0～10%, forsterite is 0～50%, light forsterite is 0～50%;
---the composition and the weight percentage of auxiliary material be, water glass is 0～10%, tripoly phosphate sodium STPP is 0～1%, Sodium hexametaphosphate 99 is 0～1%, dextrin is 0～1%, polyvinyl alcohol is 0～1%, starch is 0～1%, wilkinite is 0～3%, Suzhou soil is 0～3%, the Guangxi white clay is 0～3%.
The grain composition of above-mentioned main raw material is: 5～3mm is 8～12%, 3～1mm is 30～40%,＜1mm is 20～30%,＜0.074mm is 20～25%.
The present invention is a main raw material owing to having adopted with magnesia, forsterite, be aided with an amount of silicate and carbamate additives for low phosphorus hydrochlorate, organic softening agent etc., form by adjusting a grating and feed proportioning optimization, inorganic salt polymerization in bake process, organism condensation produce intensity, form light microporous structure.The continuous casting tundish that is obtained with environment-protection dry type vibrating material have easy construction, storing time weak point, long service life, turn over contain easily, stable processing technique, result of use obviously, have no irritating odor, not can to molten steel recarburization increase hydrogen, erosion-resisting characteristics good, be easy to advantage such as disintegration.
Four, embodiment
[embodiment] 1 one kinds is at 30 tons of sheet billet continuous casting tundish environment-protection dry type vibrating materials
In weight percentage: containing MgO and be 94%～95% magnesite clinker is 85～90%, and light-burning magnesium powder is 5～10%, and water glass is 2～8%, wilkinite is 0.5～2%, Suzhou soil is 0.5～2%, and tripoly phosphate sodium STPP is 0.5～1%, and polyvinyl alcohol is 0.2～1%.
Wherein the grain composition of magnesite clinker is: 5～3mm is 10～12%, 3～1mm is 32～36%,＜1mm is 23～28%,＜0.074mm is 23～25%.
After mixing, fetal membrane vibratory compaction is adopted in the back that stirs by the raw material of said ratio, and 200～350 ℃ of bakings, the demoulding obtains the tundish liner.
It surveys chemical index: MgO is 90.13%, SiO
2Be 7.1%, Al
2O
3Be 1.2%; Volume density: 110 ℃ * 24h 2.08g/cm
3Compressive strength: 110 ℃ * 24h2.4MPa, 1500 ℃ * 3h burns back 8.1MPa; The line velocity of variation: 1500 ℃ * 3h burns back-1.0%.This kind material uses on 30 tons of sheet billet continuous casting tundish, and the life-span can be up to 25 heats, and the dry type material uses anterior wall thickness to be 85mm, uses the back to be 80mm.
[embodiment] 2 one kinds is at 20 tons of continuous small-billet casting tundish environment-protection dry type vibrating materials
In weight percentage: MgO content is that 88～93% ordinary sinter magnesia is 60～70%, electrofusion magnesia powder (≤0.074mm) be 20～30%, light-burning magnesium powder is 5～8%, water glass is 2～5%, wilkinite is 0.5～1.5%, Suzhou soil is 0.5～1.5%, and tripoly phosphate sodium STPP is 0.5～1%, and starch is 0.2～1%.
Wherein, the grain composition of ordinary sinter magnesia is: 5～3mm is 8～10%, 3～1mm is 30～35%,＜1mm is 25～30%,＜0.074mm is 20～23%.。
After mixing, fetal membrane vibratory compaction is adopted in the back that stirs by the raw material of said ratio, and 200～300 ℃ of bakings, the demoulding obtains the tundish liner.
It surveys chemical index: MgO is 86.13%, SiO
2Be 9.0%, Al
2O
3Be 1.3%; Volume density is 110 ℃ * 24h 2.05g/cm
3Compressive strength is 110 ℃ * 24h2.8MPa, and 1500 ℃ * 3h burns back 10.1MPa; The line velocity of variation is that 1500 ℃ * 3h burns back-1.5%.This kind material uses on 20 tons of continuous small-billet casting tundish, and the life-span can be up to 40 heats, and the dry type material uses anterior wall thickness to be 65mm, uses the back to be 57mm.
The characteristics that present embodiment has: 1. easy construction; But 2. the baking quick baking and do not have explosion, peel off existing Resemble, stoving time is short, and odorlessness; 3. erosion-resisting characteristics is good, long service life; 4. do not have carburetting, increase hydrogen Phenomenon, thereby can not pollute molten steel; 5. the performance of disintegrating is good, can realize the automatic turning bag.
Claims (3)
1, a kind of method for preparing continuous casting with the tundish environment-protection dry type vibrating material, it is characterized in that percentage composition meter by weight: main raw material with 90～95% and 5～10% auxiliary material mix, the vibratory compaction of back employing fetal membrane stirs, 150～400 ℃ of bakings, the demoulding obtains the tundish liner; Wherein
---the composition and the weight percentage of main raw material be, magnesite clinker is 0～95%, electrosmelted magnesite clinker is 0～95%, lightweight magnesia is 0～50%, light-burning magnesium powder is 0～10%, forsterite is 0～50%, light forsterite is 0～50%;
---the composition and the weight percentage of auxiliary material be, water glass is 0～10%, tripoly phosphate sodium STPP is 0～1%, Sodium hexametaphosphate 99 is 0～1%, dextrin is 0～1%, polyvinyl alcohol is 0～1%, starch is 0～1%, wilkinite is 0～3%, Suzhou soil is 0～3%, the Guangxi white clay is 0～3%.。
2, the method for preparing continuous casting with the tundish environment-protection dry type vibrating material according to claim 1 is characterized in that the grain composition of described main raw material is: 5～3mm is 8～12%, 3～1mm is 30～40%,＜1mm is 20～30%,＜0.074mm is 20～25%.
3, according to claim 1, the 2 described prepared continuous casting of the method tundish environment-protection dry type vibrating materials that prepare continuous casting with the tundish environment-protection dry type vibrating material.
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| CNA2004100611923A CN1651352A (en) | 2004-11-26 | 2004-11-26 | Tundish dry ribration material for continuous casting and its preparation method |
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| CNA2004100611923A CN1651352A (en) | 2004-11-26 | 2004-11-26 | Tundish dry ribration material for continuous casting and its preparation method |
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| CN1651352A true CN1651352A (en) | 2005-08-10 |
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Cited By (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN100348546C (en) * | 2006-03-09 | 2007-11-14 | 武汉科技大学 | Method for preparing middle ladle dry vabrative material |
| CN100364930C (en) * | 2006-04-27 | 2008-01-30 | 鞍山市耘路耐火材料有限公司 | Tundish impact brick |
| CN100453211C (en) * | 2007-06-22 | 2009-01-21 | 河北理工大学 | Method for preparing dry working lining |
| CN101912960A (en) * | 2010-09-07 | 2010-12-15 | 河北理工大学 | Novel dry working lining material for continuous casting tundish |
| CN101537487B (en) * | 2008-03-21 | 2010-12-29 | 宝钢集团上海梅山有限公司 | Ladle liner restoring 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 |
| CN101508586B (en) * | 2009-03-27 | 2011-09-07 | 武汉钢铁(集团)公司 | Paint for continuous casting pouring box work liner and preparing technique thereof |
| CN102432314A (en) * | 2011-09-15 | 2012-05-02 | 华耐国际（宜兴）高级陶瓷有限公司 | Special additive, energy-efficient continuous casting refractory material containing additive, and preparation technology of refractory material |
| CN102531643A (en) * | 2010-12-30 | 2012-07-04 | 济南新峨嵋实业有限公司 | Gunning lining-making method for steel ladle |
| CN102775175A (en) * | 2012-08-27 | 2012-11-14 | 武汉钢铁(集团)公司 | Magnesium paint for continuous steel casting tundish |
| CN104016688A (en) * | 2014-05-12 | 2014-09-03 | 浙江铭德新材科技有限公司 | Tundish ultralow-silicon magnesium coating and preparation method thereof |
| CN111393150A (en) * | 2020-03-24 | 2020-07-10 | 浙江欣辉耐火材料股份有限公司 | Environment-friendly magnesium dry material and preparation process thereof |
| CN112341216A (en) * | 2020-10-30 | 2021-02-09 | 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 |
| CN114292089A (en) * | 2022-03-11 | 2022-04-08 | 北京利尔高温材料股份有限公司 | Tundish dry material added with zircon powder and preparation method thereof |
| CN114836062A (en) * | 2022-05-11 | 2022-08-02 | 上海利尔耐火材料有限公司 | Magnesium phosphate-free coating for tundish |
| CN115321957A (en) * | 2022-09-13 | 2022-11-11 | 中钢集团洛阳耐火材料研究院有限公司 | Tundish lining material for smelting quality steel and preparation method |
| CN116835966A (en) * | 2023-06-19 | 2023-10-03 | 武汉钢铁有限公司 | Dry vibrating material for composite tundish and preparation method |
-
2004
- 2004-11-26 CN CNA2004100611923A patent/CN1651352A/en active Pending
Cited By (24)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN100348546C (en) * | 2006-03-09 | 2007-11-14 | 武汉科技大学 | Method for preparing middle ladle dry vabrative material |
| CN100364930C (en) * | 2006-04-27 | 2008-01-30 | 鞍山市耘路耐火材料有限公司 | Tundish impact brick |
| CN100453211C (en) * | 2007-06-22 | 2009-01-21 | 河北理工大学 | Method for preparing dry working lining |
| CN101537487B (en) * | 2008-03-21 | 2010-12-29 | 宝钢集团上海梅山有限公司 | Ladle liner restoring material |
| CN101508586B (en) * | 2009-03-27 | 2011-09-07 | 武汉钢铁(集团)公司 | Paint for continuous casting pouring box work liner and preparing technique thereof |
| CN101912960A (en) * | 2010-09-07 | 2010-12-15 | 河北理工大学 | Novel dry working lining material for continuous casting tundish |
| CN101912960B (en) * | 2010-09-07 | 2012-04-18 | 河北理工大学 | Novel dry working lining material for continuous casting tundish |
| 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 |
| CN102531643A (en) * | 2010-12-30 | 2012-07-04 | 济南新峨嵋实业有限公司 | Gunning lining-making method for steel ladle |
| CN102432314B (en) * | 2011-09-15 | 2013-01-30 | 华耐国际（宜兴）高级陶瓷有限公司 | Special additive, energy-efficient continuous casting refractory material containing additive, and preparation technology of refractory material |
| CN102432314A (en) * | 2011-09-15 | 2012-05-02 | 华耐国际（宜兴）高级陶瓷有限公司 | Special additive, energy-efficient continuous casting refractory material containing additive, and preparation technology of refractory material |
| CN102775175A (en) * | 2012-08-27 | 2012-11-14 | 武汉钢铁(集团)公司 | Magnesium paint for continuous steel casting tundish |
| CN102775175B (en) * | 2012-08-27 | 2014-08-27 | 武汉钢铁(集团)公司 | Magnesium paint for continuous steel casting tundish |
| CN104016688A (en) * | 2014-05-12 | 2014-09-03 | 浙江铭德新材科技有限公司 | Tundish ultralow-silicon magnesium coating and preparation method thereof |
| CN104016688B (en) * | 2014-05-12 | 2015-11-18 | 浙江铭德新材科技有限公司 | A kind of tundish ultra-low silicon magnesia coating and preparation method thereof |
| CN111393150A (en) * | 2020-03-24 | 2020-07-10 | 浙江欣辉耐火材料股份有限公司 | Environment-friendly magnesium dry material and preparation process thereof |
| CN112341216A (en) * | 2020-10-30 | 2021-02-09 | 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 |
| CN114292089A (en) * | 2022-03-11 | 2022-04-08 | 北京利尔高温材料股份有限公司 | Tundish dry material added with zircon powder and preparation method thereof |
| CN114836062A (en) * | 2022-05-11 | 2022-08-02 | 上海利尔耐火材料有限公司 | Magnesium phosphate-free coating for tundish |
| CN114836062B (en) * | 2022-05-11 | 2024-04-16 | 上海利尔耐火材料有限公司 | Tundish magnesia phosphorus-free coating |
| CN115321957A (en) * | 2022-09-13 | 2022-11-11 | 中钢集团洛阳耐火材料研究院有限公司 | Tundish lining material for smelting quality steel and preparation method |
| CN115321957B (en) * | 2022-09-13 | 2023-10-20 | 中钢集团洛阳耐火材料研究院有限公司 | Tundish lining material for smelting quality steel and preparation method |
| CN116835966A (en) * | 2023-06-19 | 2023-10-03 | 武汉钢铁有限公司 | Dry vibrating material for composite tundish and preparation method |
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