CN103351167A - Preparation method of environmentally-friendly tundish dry working liner - Google Patents
Preparation method of environmentally-friendly tundish dry working liner Download PDFInfo
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- CN103351167A CN103351167A CN2012105812035A CN201210581203A CN103351167A CN 103351167 A CN103351167 A CN 103351167A CN 2012105812035 A CN2012105812035 A CN 2012105812035A CN 201210581203 A CN201210581203 A CN 201210581203A CN 103351167 A CN103351167 A CN 103351167A
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Abstract
The invention relates to the technical field of unshaped refractory materials, and especially relates to a preparation method of an environmentally-friendly tundish dry working liner. A technical scheme adopted in the invention is characterized in that the preparation method comprises the following steps: mixing 80-98wt% of a magnesia or magnesium olivine sand refractory primary raw material, 1-15wt% of a glucose or rosin binder and 0.2-5wt% of a boride sintering agent, wherein the sum of the weight percentages of the above raw materials is 100%, and the magnesia or magnesium olivine sand refractory primary raw material comprises 60-90wt% of 5-0.074mm grains and 10-40wt% of below 0.074mm grains; uniformly stirring; carrying out loose tool vibration molding; baking at 180-300DEG C for 1-3h; and removing the loose tool to obtain the working liner. The dry working liner obtained in the invention has the advantages of environmental protection, high strength, good erosion resistance, difficult carburetting and hydrogen increase of molten steel, long service life, and easy disassembly.
Description
Affiliated technical field
The present invention relates to the unshape refractory technical field, especially a kind of preparation method of environment-friendly type dry working lining.
Background technology
Tundish is the intermediate store that molten steel is diverted to crystallizer in the steel-making continuous casting production process from ladle, and liner in dundish plays high temperature resistant, anti-molten steel in continuous casting production process and slag corrodes, the effect of heat-insulation and heat-preservation.The quality of liner in dundish refractory quality plays important effect to the inclusion of getting rid of molten steel, the quality product stable and raising continuous casting steel mill that keeps steel to flow.
Liner in dundish develops into manual smear or mechanically spraying is magnesia, the calcareous unsetting material of magnesium by building silica heat-insulating plate by laying bricks or stones.Afterwards, along with the prolongation of middle continuous cast crystallizer number, developed tundish dry material, and constructed by the vibratory compaction mode and make liner in dundish and satisfy the needs that water for a long time steel.For example:
" the calcareous dry-type working lining of a kind of novel tundish magnesium " be technology (CN02117935.2), take synthetic magnesia-calcium clinker, passivation dolomite sand, passive lime stone sand, calcination 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 wedding agent, make the dry type inner lining material through evenly mixing, construct by tundish mould tire with the scene, and with 150-300 ℃ of baking 1-3 hour, take off the mould tire, working lining;
" alkaline dry liner for intermediate ladle of continuous casting " be technology (CN01115190.0), is the unsetting composition take magnesia as main body, and 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 above-mentioned dry materials of wedding agent of doing with resol is not owing to generating a large amount of eutectics under not moisture and the high temperature, so that prolong work-ing life.But, as the dry materials of wedding agent following shortcoming is arranged with resol:
(1) the resol price is higher, so that dry materials one-tenth is higher;
(2) produce the irritant gass such as ammonia, formaldehyde in the resol bake process, contaminate environment affects the operative employee healthy.
(3) carbon, the hydrogen that produce after the resol charing can cause molten steel recarburization, increase hydrogen, are unfavorable for producing the high quality steel.
Summary of the invention
The object of the invention provide a kind of cheap, have no irritating odor, can not increase hydrogen to molten steel recarburization, intensity is high, erosion-resisting characteristics good, disintegrating is easy to the preparation method of environment-friendly type dry working lining.
Environment-friendly type tundish dry material working lining provided by the invention is one group of unsetting composition take magnesia or olive sand as main body, and its component is by weight percentage:
The fire-resistant main raw material 80～98% of magnesia or olive sand class
Glucose or rosin based wedding agent 1～15%
Borides agglutinant 0.2～5%
Illustrate:
(1) magnesia or the fire-resistant main raw material of olive sand class, glucose or rosin based wedding agent and borides agglutinant, each component weight percent sum is 100%.
(2) magnesia as fire-resistant main raw material can be magnesite clinker, also can be electrosmelted magnesite clinker; Olive sand can be natural olive sand, also sintering olive sand.
(3) as wedding agent can be glucose, also can be rosin, also can be the mixture of glucose and rosin.
(4) boride as agglutinant can be borax, also can boric acid, and also can be the mixture of borax and boric acid.
After these material stirrings are mixed, adopt loose tool vibratory compaction, be heated to 180-300 ℃ of baking 1-3 hour, take off the mould tire, can obtain working lining.
Wherein as the magnesia of main raw material, the weight percentage of olive sand grain composition be: 5-0.074mm is 60-90%, and＜0.074mm is 10-40%.
Compared with prior art, the present invention,, can be melted in bake process because glucose or rosin fusing point are low as wedding agent with glucose or rosin, makes dry materials produce intensity with the temperature continuous polymerization that raises; In addition, it all is the hydrocarbon polymer of molecular weight that glucose and rosin are compared with resol, and easy oxidized eliminating in bake process does not have irritant gas to produce yet; Add boride, can promote the dry materials sintering, improve the middle hot strength of dry materials.Dry materials environmental friendliness, the intensity that the present invention obtains is high, erosion-resisting characteristics is good, be not easy to increase hydrogen, long service life, be easy to disintegrate to molten steel recarburization.
Below in conjunction with specific examples in detail the present invention is described in detail:
Example 1:
By weight percentage, containing MgO and be 95% magnesite clinker is 90%, and glucose is 8%, and borax is 2%, and wherein the weight percent of magnesite clinker grain composition is that 5-0.074mm is 60-90%, and＜0.074mm is 10-40%.
Above-mentioned raw materials is mixed, and the rear employing loose tool vibratory compaction that stirs is heated to 180-300 ℃ of baking 1-3 hour, takes off the mould tire, working lining.
It surveys index: MgO is 85.1%, volume density: 200 ℃ * 3h is 2.20g/cm
3, compressive strength: 200 ℃ * 3h is 6MPa, compressive strength: 1500 ℃ * 3h is 12MPa, the line velocity of variation: 1500 ℃ * 3h is-1.5%, and this dry materials uses at 30 tons of tundish, and the life-span reached more than 30 hours, and turned over the bag disintegration easily.
Example 2:
By weight percentage, containing MgO and be 95% magnesite clinker is 90%, and glucose is 6%, and rosin is 3%, and borax is 1%, and wherein the weight percent of magnesite clinker grain composition is that 5-0.074mm is 60-90%, and＜0.074mm is 10-40%.
Above-mentioned raw materials is mixed, and the rear employing loose tool vibratory compaction that stirs is heated to 180-300 ℃ of baking 1-3 hour, takes off the mould tire, working lining.
It surveys index: MgO is 85.1%, volume density: 200 ℃ * 3h is 2.18g/cm
3, compressive strength: 200 ℃ * 3h is 6MPa, compressive strength: 1500 ℃ * 3h is 11MPa, the line velocity of variation: 1500 ℃ * 3h is-1.4%, and this dry materials uses at 30 tons of tundish, and the life-span reached more than 30 hours, and turned over the bag disintegration easily.
Claims (2)
1. an environment-friendly type tundish dry serves as a contrast, and it is characterized in that its components based on weight percentage is:
The fire-resistant main raw material 80～98% of magnesia or olive sand class
Glucose or rosin based wedding agent 1～15%
Borides agglutinant 0.2～5%
Each component weight percent sum is 100%.
Wherein the refractory materials main raw material is a kind of or whole of magnesia or peridotites class fireproof raw material; Wedding agent is a kind of or whole of glucose, rosin based raw material; Borides agglutinant is a kind of or whole of boric acid or borax class raw material.
2. according to the preparation method of right 1 described environment-friendly type tundish dry material working lining, it is characterized in that the weight percentage of described magnesia or the fire-resistant main raw material grain composition of olive sand class is: 5-0.074mm is 60-90%, and＜0.074mm is 10-40%.
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| CN2012105812035A CN103351167A (en) | 2012-12-28 | 2012-12-28 | Preparation method of environmentally-friendly tundish dry working liner |
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| CN2012105812035A CN103351167A (en) | 2012-12-28 | 2012-12-28 | Preparation method of environmentally-friendly tundish dry working liner |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107140993A (en) * | 2017-07-13 | 2017-09-08 | 华北理工大学 | A kind of modified bonding agent |
| CN107793171A (en) * | 2017-11-22 | 2018-03-13 | 海城利尔麦格西塔材料有限公司 | A kind of white olivine tundish dry material and production method |
| CN108178641A (en) * | 2018-01-13 | 2018-06-19 | 江苏嘉耐高温材料有限公司 | A kind of tundish dry material and preparation method thereof |
| CN109678529A (en) * | 2019-03-06 | 2019-04-26 | 泰安市德诚耐火材料有限公司 | The bonding agent produced for steel-making continuous casting three-major-items and magnesia carbon brick |
| CN109704728A (en) * | 2019-03-06 | 2019-05-03 | 泰安市德诚耐火材料有限公司 | Continuous casting tundish dry material environmental-friendly binder |
| CN111116213A (en) * | 2019-02-21 | 2020-05-08 | 张家港市恒乐阳方高温材料有限公司 | Dry refractory material |
| CN112250453A (en) * | 2020-10-21 | 2021-01-22 | 江西博丰耐火材料有限公司 | Dry material for continuous casting tundish working lining, construction process and continuous casting tundish working lining |
| CN112624749A (en) * | 2020-12-03 | 2021-04-09 | 海城市中兴镁质合成材料有限公司 | Low-cost tundish dry material and preparation method thereof |
| CN114409381A (en) * | 2022-03-28 | 2022-04-29 | 北京利尔高温材料股份有限公司 | Tundish dry material and preparation method thereof |
| CN115010468A (en) * | 2021-07-12 | 2022-09-06 | 张家港市恒乐阳方高温材料有限公司 | Environment-friendly tundish dry material and preparation method thereof |
| CN116041048A (en) * | 2023-03-20 | 2023-05-02 | 河北国亮新材料股份有限公司 | Magnesium aluminum dry material for continuous casting tundish |
| CN116675517A (en) * | 2023-07-31 | 2023-09-01 | 河北国亮新材料股份有限公司 | Environment-friendly tundish dry material and preparation method thereof |
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| CN101077523A (en) * | 2007-06-22 | 2007-11-28 | 河北理工大学 | Method for preparing dry working lining |
| CN101423416A (en) * | 2008-10-31 | 2009-05-06 | 江苏苏嘉集团新材料有限公司 | Tundish magnesium dry-type stock adding aluminum hydroxide |
| CN101613216A (en) * | 2009-04-09 | 2009-12-30 | 北京利尔高温材料股份有限公司 | A kind of environment-friendly flowing tundish dry material and preparation method thereof |
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2012
- 2012-12-28 CN CN2012105812035A patent/CN103351167A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101077523A (en) * | 2007-06-22 | 2007-11-28 | 河北理工大学 | Method for preparing dry working lining |
| CN101423416A (en) * | 2008-10-31 | 2009-05-06 | 江苏苏嘉集团新材料有限公司 | Tundish magnesium dry-type stock adding aluminum hydroxide |
| CN101613216A (en) * | 2009-04-09 | 2009-12-30 | 北京利尔高温材料股份有限公司 | A kind of environment-friendly flowing tundish dry material and preparation method thereof |
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107140993A (en) * | 2017-07-13 | 2017-09-08 | 华北理工大学 | A kind of modified bonding agent |
| CN107793171A (en) * | 2017-11-22 | 2018-03-13 | 海城利尔麦格西塔材料有限公司 | A kind of white olivine tundish dry material and production method |
| CN108178641B (en) * | 2018-01-13 | 2021-04-13 | 江苏嘉耐高温材料股份有限公司 | Tundish dry material and preparation method thereof |
| CN108178641A (en) * | 2018-01-13 | 2018-06-19 | 江苏嘉耐高温材料有限公司 | A kind of tundish dry material and preparation method thereof |
| CN111116213A (en) * | 2019-02-21 | 2020-05-08 | 张家港市恒乐阳方高温材料有限公司 | Dry refractory material |
| CN109678529A (en) * | 2019-03-06 | 2019-04-26 | 泰安市德诚耐火材料有限公司 | The bonding agent produced for steel-making continuous casting three-major-items and magnesia carbon brick |
| CN109704728A (en) * | 2019-03-06 | 2019-05-03 | 泰安市德诚耐火材料有限公司 | Continuous casting tundish dry material environmental-friendly binder |
| CN109678529B (en) * | 2019-03-06 | 2022-05-27 | 泰安市德诚耐火材料有限公司 | Binding agent for producing three major parts of steel-making continuous casting and magnesia carbon brick |
| CN112250453A (en) * | 2020-10-21 | 2021-01-22 | 江西博丰耐火材料有限公司 | Dry material for continuous casting tundish working lining, construction process and continuous casting tundish working lining |
| CN112624749A (en) * | 2020-12-03 | 2021-04-09 | 海城市中兴镁质合成材料有限公司 | Low-cost tundish dry material and preparation method thereof |
| CN115010468A (en) * | 2021-07-12 | 2022-09-06 | 张家港市恒乐阳方高温材料有限公司 | Environment-friendly tundish dry material and preparation method thereof |
| CN114409381A (en) * | 2022-03-28 | 2022-04-29 | 北京利尔高温材料股份有限公司 | Tundish dry material and preparation method thereof |
| CN116041048A (en) * | 2023-03-20 | 2023-05-02 | 河北国亮新材料股份有限公司 | Magnesium aluminum dry material for continuous casting tundish |
| CN116675517A (en) * | 2023-07-31 | 2023-09-01 | 河北国亮新材料股份有限公司 | Environment-friendly tundish dry material and preparation method thereof |
| CN116675517B (en) * | 2023-07-31 | 2023-10-13 | 河北国亮新材料股份有限公司 | Environment-friendly tundish dry material and preparation method thereof |
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Application publication date: 20131016 |