CN103771872A - Preparation method of tundish eco-friendly dry vibration material - Google Patents
Preparation method of tundish eco-friendly dry vibration material Download PDFInfo
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- CN103771872A CN103771872A CN201210405500.4A CN201210405500A CN103771872A CN 103771872 A CN103771872 A CN 103771872A CN 201210405500 A CN201210405500 A CN 201210405500A CN 103771872 A CN103771872 A CN 103771872A
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- magnesite clinker
- electrosmelted magnesite
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Abstract
The invention discloses a preparation method of a tundish eco-friendly dry vibration material. The preparation method comprises the following steps of 1, putting 15-17 parts of fused magnesia particles having the sizes of 5-7mm, 20-22 parts of fused magnesia particles having the sizes of 2-5mm and 7-9 parts of fused magnesia particles having the sizes of 0.5-1mm into a mixer, carrying out mixing for 4-6min, adding 1.5-2.5 parts of polyvinyl alcohol and 2-4 parts of bentonite into the mixture, and carrying out mixing for 9-11min, 2, adding 4-6 parts of caustic-burned magnesia powder of -200 meshes, 1-3 parts of alpha-Al2O3 powder of -200 meshes, 1-3 parts of silicon oxide powder of -200 meshes and 2-4 parts of calcium oxide powder of -200 meshes into the mixture, carrying out mixing for 9-11 min, adding 0.5-1.5 parts of sodium tripolyphosphate, 0.5-1.5 parts of sodium hexametaphosphate and 0.1-0.3 parts of dextrin into the mixture and carrying out mixing for 14-16min, and 3, carrying out blank film vibration molding on the mixture obtained by the step 2, carrying out baking at a temperature of 260-280 DEG C and carrying out demolding.
Description
Technical field
The present invention relates to technical field of ferrous metallurgy, relate in particular to a kind of preparation method of tundish environmentally-friendly dry vibration material.
Background technology
Important key equipment of high efficiency continuous casting Technology that continuous casting tundish generally adopts as the outer steel industry of Now Domestic, plays an important role to stabilizing continuous casting production and raising continuous casting billet quality.Therefore, the exploitation of the novel refractory relevant to continuous casting tundish and goods, development are emphasis of metallurgical refractories industry always.
That liner in dundish 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 day by day of Clean Steel and steel alloy demand, tundish also becomes the final key link to steel secondary refining in process for making simultaneously.Liner in dundish 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 extends work-ing life, molten steel obtains certain purification.In recent years due to the quoting of Quick changing gate technology, require tundish further to improve work-ing life, therefore developed the tundish dry vibratory material of resol combination.As " alkaline dry liner for intermediate ladle of continuous casting " technology (CN01115190.0), it is the unsetting composition take magnesia as main body, 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%; And for example " the calcareous dry-type working lining of a kind of novel tundish magnesium " technology (CN 02117935.2), take synthetic magnesia-calcium clinker, passivation dolomite sand, passive lime stone sand, calcined dolomite sand, lime kilning stone sand etc. as calcareous raw material, take iron scale, clay, silicon powder etc. as sintering aid, take resin, malt sugar, PVC as bonding agent, through evenly mixing and make dry type lining material, at the scene by the construction of tundish mould tire, and with 150～350 ℃ of bakings 1～3 hour, take off mould tire, working lining; For another " continuous casting liner in dundish " technology (CN 02116839.3), magnesia 80～95%, alumina 1～10%, soft clay 1～5%, organic thermoplastic compound 2～15%.
In above-mentioned dry-type vibration material because can not form a large amount of eutectics under not moisture and high temperature, so greatly extend work-ing life.But, carbon, hydrogen after the bonding agent resol charing of this kind of dry materials can obviously be given molten steel recarburization, increase hydrogen, and from material, volatilize irritating smell when baking, also contaminate environment, therefore develops, produces high-performance environmentally-friendly type tundish dry vibratory material the aggregate level tool that improves domestic refractories industry and even metallurgy industry Iron and Steel Production technology is of great significance.
Summary of the invention
The object of the invention is to propose a kind of preparation method of tundish environmentally-friendly dry vibration material, this dry-type vibration material easy construction, baking time are short, long service life, turn over contain easily, have no irritating odor, not can to molten steel recarburization increase hydrogen, erosion-resisting characteristics good, be easy to disintegrate.
For reaching this object, the present invention by the following technical solutions:
A kind of preparation method of tundish environmentally-friendly dry vibration material, this environmentally-friendly dry vibration material is made up of following component in weight part: 5-7mm electrosmelted magnesite clinker particle 15-17 part, 2-5mm electrosmelted magnesite clinker particle 20-22 part, 0.5-1mm electrosmelted magnesite clinker particle 7-9 part,-200 order light-burning magnesium powder 4-6 parts ,-200 order α-Al
2o
3powder 1-3 part ,-200 order silica powder 1-3 parts ,-200 order calcium oxide powder 2-4 parts, tripoly phosphate sodium STPP 0.5-1.5 part, Sodium hexametaphosphate 99 0.5-1.5 part, dextrin 0.1-0.3 part, polyvinyl alcohol 1.5-2.5 part, wilkinite 2-4 part; Described preparation method is:
1) by 5-7mm electrosmelted magnesite clinker particle, 2-5mm electrosmelted magnesite clinker particle, 0.5-1mm electrosmelted magnesite clinker particle is put into stirrer for mixing 4-6 minute; Then add polyvinyl alcohol and wilkinite, remix 9-11 minute;
2) add light-burning magnesium powder, α-Al
2o
3powder, silica powder, calcium oxide powder, remix 9-11 minute; Finally add tripoly phosphate sodium STPP, Sodium hexametaphosphate 99 and dextrin, mix discharging after 14-16 minute;
3) compound is adopted to fetal membrane vibratory compaction, 260-280 ℃ of baking, the demoulding and get final product.
The present invention, owing to having adopted take electrosmelted magnesite clinker as main raw material, forms by adjusting a grating and feed proportioning optimization, when in use, and light-burning magnesium powder, α-Al
2o
3powder, silica powder, at high temperature there is reaction in－situ and produce phase transformation generation aluminum-spinel in calcium oxide powder, improves volume density, increased basic, normal, high temperature intensity, improves the resistance to erosion energy of product, increases the service life.Make vibration material all have higher intensity at low temperature and high temperature by organic adhesive polyvinyl alcohol and the bentonitic cooperation of inorganic adhesive, inorganic salt polymerization in bake process, organism condensation produce intensity, form light microporous structure.
Vibration material of the present invention has that easy construction, baking time are short, 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 the advantages such as disintegration.
Embodiment
Embodiment mono-
A kind of preparation method of tundish environmentally-friendly dry vibration material, this environmentally-friendly dry vibration material is made up of following component in weight part: 15 parts of 5-7mm electrosmelted magnesite clinker particles, 22 parts of 2-5mm electrosmelted magnesite clinker particles, 7 parts of 0.5-1mm electrosmelted magnesite clinker particles,-200 6 parts of order light-burning magnesium powders ,-200 order α-Al
2o
31 part, powder ,-200 3 parts of order silica powders ,-200 2 parts of order calcium oxide powders, 1.5 parts of tripoly phosphate sodium STPPs, 0.5 part of Sodium hexametaphosphate 99,0.3 part, dextrin, 1.5 parts of polyvinyl alcohol, 4 parts of wilkinites; Described preparation method is:
1) by 5-7mm electrosmelted magnesite clinker particle, 2-5mm electrosmelted magnesite clinker particle, 0.5-1mm electrosmelted magnesite clinker particle is put into stirrer for mixing 4 minutes; Then add polyvinyl alcohol and wilkinite, remix 11 minutes;
2) add light-burning magnesium powder, α-Al
2o
3powder, silica powder, calcium oxide powder, remix 9 minutes; Finally add tripoly phosphate sodium STPP, Sodium hexametaphosphate 99 and dextrin, mix discharging after 16 minutes;
3) compound is adopted to fetal membrane vibratory compaction, 260 ℃ of bakings, the demoulding and get final product.
Embodiment bis-
A kind of preparation method of tundish environmentally-friendly dry vibration material, this environmentally-friendly dry vibration material is made up of following component in weight part: 17 parts of 5-7mm electrosmelted magnesite clinker particles, 20 parts of 2-5mm electrosmelted magnesite clinker particles, 9 parts of 0.5-1mm electrosmelted magnesite clinker particles,-200 4 parts of order light-burning magnesium powders ,-200 order α-Al
2o
33 parts, powder ,-200 1 part of order silica powder ,-200 4 parts of order calcium oxide powders, 0.5 part of tripoly phosphate sodium STPP, 1.5 parts of Sodium hexametaphosphate 99s, 0.1 part, dextrin, 2.5 parts of polyvinyl alcohol, 2 parts of wilkinites; Described preparation method is:
1) by 5-7mm electrosmelted magnesite clinker particle, 2-5mm electrosmelted magnesite clinker particle, 0.5-1mm electrosmelted magnesite clinker particle is put into stirrer for mixing 6 minutes; Then add polyvinyl alcohol and wilkinite, remix 9 minutes;
2) add light-burning magnesium powder, α-Al
2o
3powder, silica powder, calcium oxide powder, remix 11 minutes; Finally add tripoly phosphate sodium STPP, Sodium hexametaphosphate 99 and dextrin, mix discharging after 14 minutes;
3) compound is adopted to fetal membrane vibratory compaction, 280 ℃ of bakings, the demoulding and get final product.
Embodiment tri-
A kind of preparation method of tundish environmentally-friendly dry vibration material, this environmentally-friendly dry vibration material is made up of following component in weight part: 16 parts of 5-7mm electrosmelted magnesite clinker particles, 21 parts of 2-5mm electrosmelted magnesite clinker particles, 8 parts of 0.5-1mm electrosmelted magnesite clinker particles,-200 5 parts of order light-burning magnesium powders ,-200 order α-Al
2o
32 parts, powder ,-200 2 parts of order silica powders ,-200 3 parts of order calcium oxide powders, 1 part of tripoly phosphate sodium STPP, 1 part of Sodium hexametaphosphate 99,0.2 part, dextrin, 2 parts of polyvinyl alcohol, 3 parts of wilkinites; Described preparation method is:
1) by 5-7mm electrosmelted magnesite clinker particle, 2-5mm electrosmelted magnesite clinker particle, 0.5-1mm electrosmelted magnesite clinker particle is put into stirrer for mixing 5 minutes; Then add polyvinyl alcohol and wilkinite, remix 10 minutes;
2) add light-burning magnesium powder, α-Al
2o
3powder, silica powder, calcium oxide powder, remix 10 minutes; Finally add tripoly phosphate sodium STPP, Sodium hexametaphosphate 99 and dextrin, mix discharging after 15 minutes;
3) compound is adopted to fetal membrane vibratory compaction, 270 ℃ of bakings, the demoulding and get final product.
Claims (1)
1. the preparation method of a tundish environmentally-friendly dry vibration material, it is characterized in that, this environmentally-friendly dry vibration material is made up of following component in weight part: 5-7mm electrosmelted magnesite clinker particle 15-17 part, 2-5mm electrosmelted magnesite clinker particle 20-22 part, 0.5-1mm electrosmelted magnesite clinker particle 7-9 part,-200 order light-burning magnesium powder 4-6 parts ,-200 order α-Al
2o
3powder 1-3 part ,-200 order silica powder 1-3 parts ,-200 order calcium oxide powder 2-4 parts, tripoly phosphate sodium STPP 0.5-1.5 part, Sodium hexametaphosphate 99 0.5-1.5 part, dextrin 0.1-0.3 part, polyvinyl alcohol 1.5-2.5 part, wilkinite 2-4 part; Described preparation method is:
1) by 5-7mm electrosmelted magnesite clinker particle, 2-5mm electrosmelted magnesite clinker particle, 0.5-1mm electrosmelted magnesite clinker particle is put into stirrer for mixing 4-6 minute; Then add polyvinyl alcohol and wilkinite, remix 9-11 minute;
2) add light-burning magnesium powder, α-Al
2o
3powder, silica powder, calcium oxide powder, remix 9-11 minute; Finally add tripoly phosphate sodium STPP, Sodium hexametaphosphate 99 and dextrin, mix discharging after 14-16 minute;
3) compound is adopted to fetal membrane vibratory compaction, 260-280 ℃ of baking, the demoulding and get final product.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210405500.4A CN103771872A (en) | 2012-10-22 | 2012-10-22 | Preparation method of tundish eco-friendly dry vibration material |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210405500.4A CN103771872A (en) | 2012-10-22 | 2012-10-22 | Preparation method of tundish eco-friendly dry vibration material |
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| CN103771872A true CN103771872A (en) | 2014-05-07 |
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| CN201210405500.4A Pending CN103771872A (en) | 2012-10-22 | 2012-10-22 | Preparation method of tundish eco-friendly dry vibration material |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104084574A (en) * | 2014-07-14 | 2014-10-08 | 浙江铭德新材科技有限公司 | Novel environmentally friendly tundish working lining and forming method thereof |
| CN107188580A (en) * | 2017-06-28 | 2017-09-22 | 常州万博金属构件厂 | A kind of vibration material and preparation method thereof |
| CN112811883A (en) * | 2020-12-18 | 2021-05-18 | 湖州屹鑫节能材料科技有限公司 | Corrosion-resistant and scouring-resistant magnesium tundish dry vibration material, and preparation method and equipment thereof |
-
2012
- 2012-10-22 CN CN201210405500.4A patent/CN103771872A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104084574A (en) * | 2014-07-14 | 2014-10-08 | 浙江铭德新材科技有限公司 | Novel environmentally friendly tundish working lining and forming method thereof |
| CN104084574B (en) * | 2014-07-14 | 2016-08-24 | 浙江铭德新材科技有限公司 | A kind of environment-friendly type liner in dundish and forming method thereof |
| CN107188580A (en) * | 2017-06-28 | 2017-09-22 | 常州万博金属构件厂 | A kind of vibration material and preparation method thereof |
| CN112811883A (en) * | 2020-12-18 | 2021-05-18 | 湖州屹鑫节能材料科技有限公司 | Corrosion-resistant and scouring-resistant magnesium tundish dry vibration material, and preparation method and equipment thereof |
| CN112811883B (en) * | 2020-12-18 | 2022-12-09 | 湖州屹鑫节能材料科技有限公司 | Corrosion-resistant and scouring-resistant magnesium tundish dry vibration material, and preparation method and equipment thereof |
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Application publication date: 20140507 |