CN103964895A - Nanometer processing method for working surface of ladle precast block lining brick - Google Patents
Nanometer processing method for working surface of ladle precast block lining brick Download PDFInfo
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- CN103964895A CN103964895A CN201310025368.9A CN201310025368A CN103964895A CN 103964895 A CN103964895 A CN 103964895A CN 201310025368 A CN201310025368 A CN 201310025368A CN 103964895 A CN103964895 A CN 103964895A
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Abstract
The invention provides a nanometer processing method for the working surface of a ladle precast block lining brick. The method comprises the following steps: 1) putting a working lining of a ladle precast block in a vacuum apparatus, carrying out vacuum-pumping on the ladle precast block, wherein a degree of vacuum is allowed to be less than 0.08 MPa, and maintaining a pressure for more than 3 hours; 2) under a vacuum condition, adding a nanometer aluminum oxide sol solution, wherein the nanometer aluminum oxide sol solution is allowed to totally immerse the ladle precast block, Al2O3 solid content in the nanometer aluminum oxide sol solution is 10 to 25 wt%, and the pH value of the solution is 3.0 to 6.5; 3) relieving pressure in the vacuum apparatus and allowing an nanometer aluminum oxide sol to enter into the ladle precast block under the action of atmospheric pressure; 4) drying the ladle precast block treated with nanometer aluminum oxide at a low temperature of less than 250 DEG D; and 5) carrying out impurity removal and rubbing on the surface of the dried ladle precast block, which enables a bricklaying surface of the ladle precast block to be smooth so as to facilitate bricklaying of the ladle precast block. The method provided by the invention realizes uniform filling of pores in a refractory product with nanometer sol and overcomes the problem of agglomeration of nanometer powder.
Description
Technical field
The present invention relates to corundum spinel refractory materials goods processing technology, particularly a kind of ladle prefabricated section lining brick working face nano method for treating.
Background technology
Nano material, because grain diameter is little, has larger specific surface, thereby makes nano material show unusual small-size effect, specific surface effect and surfactivity free from worldly cares.
Although in recent years people by experiment means (sol-gel method, vacuum freeze-drying method etc.) prepared many refractory oxides, but actual should in to receive powder particles active significantly, the agglomeration traits showing, become the bottleneck of nano powder in refractory materials application, restricted the application of nano material in refractory materials.Although there is nano-oxide to add the research in refractory materials to, actual in the right report seldom to some extent of refractory materials.Domestic literature report has carried out the impact research of nano-powder on corundum brick structure and performance, the method of nano particle being carried out to modification by tensio-active agent solves nano raw material agglomeration traits, and actual is that nano powder is directly joined in corundum brick in process of production.And the new approaches that propose are invented in this research--adopt nano material to the surface treatment of preformed bricks lining brick, make nanomaterial-filled in the surface porosity of preformed bricks lining brick.
Ladle prefabricated section lining brick production process adopts low cement or exceedes low cement as bonding agent, in formulating of recipe process, because discharging, cement produces cracking phenomena for preventing that ladle prefabricated section from using in bake process, add explosion-proof fiber, in production process, must add water, because of particle packing reason, between particle, produce pore, make the apparent porosity of general prefabricated section (contain the general void content of steel ladle working layer pressed machine brick of carbonaceous all at 3%-5%) in 14-18% left and right.Melting loss in the use procedure of ladle prefabricated section, to corrode the overwhelming majority be all to enter from the pore of prefabricated section due to slag and molten steel, if the work-ing life that the void content of reduction ladle prefabricated section brick just can improve ladle prefabricated section.
Summary of the invention
The object of this invention is to provide a kind of ladle prefabricated section lining brick working face nano method for treating, realize the uniform filling of Nano sol to refractory product pore, solved a reunion difficult problem for nano powder, in refractory materials uses, there is good value.
For achieving the above object, technical scheme of the present invention is:
A kind of ladle prefabricated section lining brick working face nano method for treating, comprises the steps:
1) ladle prefabricated section working lining is placed in vacuum unit, ladle prefabricated section is vacuumized to processing, and make vacuum tightness below 0.08MPa, and pressurize is more than 3 hours;
2) under described vacuum condition, add nano aluminium oxide sol solution, make the solution can all preformed bricks of submergence, the Al in aluminium colloidal sol used
2o
3solid content is at 10～25wt%, and pH value is between 3.0～6.5;
3), by vacuum unit decompress(ion), under normal atmosphere effect, make nano aluminium oxide colloidal sol enter in ladle prefabricated section;
4) the ladle prefabricated section that nano aluminium oxide was processed carries out oven drying at low temperature, and bake out temperature is below 250 DEG C;
5) the ladle prefabricated section surface thing of drying is carried out removal of impurities, polishes processing, make the surfacing of building by laying bricks or stones of ladle prefabricated section, facilitate prefabricated section to build by laying bricks or stones.
Further, step 5) adopts manual polishing or polishing equipment to the thing processing of ladle prefabricated section surface.
In the methods of the invention, ladle prefabricated section working lining is placed on and in vacuum unit, vacuumizes processing, the vacuum dwell time is more long is more conducive to the whole exhausts of prefabricated section internal porosity.Prefabricated section colloidal sol depth of penetration after vacuumizing processing is obviously greater than colloidal sol depth of penetration difference under non-vacuum condition, and under non-vacuum condition, colloidal sol only has surface to infiltrate superficial part position very much, and depth of penetration is at≤3cm; Colloidal sol depth of penetration >=8cm under vacuum condition, small-sized precast block can all infiltrate.
Embodiment
Below by embodiment, the present invention will be further described.
A kind of ladle prefabricated section lining brick working face nano method for treating of the present invention, comprises the steps:
1) ladle prefabricated section working lining is placed in vacuum unit, ladle prefabricated section is vacuumized to processing, and make vacuum tightness below 0.08MPa, and pressurize is more than 3 hours;
2) under described vacuum condition, add nano aluminium oxide sol solution, make the solution can all preformed bricks of submergence, the middle Al of aluminium colloidal sol used
2o
3solid content is at 10～25wt%, and pH value is between 3.0～6.5;
3), by vacuum unit decompress(ion), under normal atmosphere effect, make nano aluminium oxide colloidal sol enter in ladle prefabricated section;
4) the ladle prefabricated section that nano aluminium oxide was processed carries out oven drying at low temperature, and bake out temperature is below 250 DEG C;
5) adopt manual polishing or polishing equipment to carry out removal of impurities, polish processing to the ladle prefabricated section surface thing of drying, make the surfacing of building by laying bricks or stones of prefabricated section, facilitate prefabricated section to build by laying bricks or stones.
To carrying out comparison and detection through Nano surface treatment ladle prefabricated section lining brick, index detection case is as following table 1.
Table 1
By electron microscopic observation, adopt the inventive method to process the ladle prefabricated section of 170mm, nano aluminium oxide can completely evenly immerse monoblock prefabricated section inside.
After surface treatment, the apparent porosity of ladle prefabricated section obviously reduces, intensity has a more substantial increase, and does not simultaneously reduce use temperature, can obviously reduce molten steel perviousness, attenuate reaction is rotten in actual use procedure, significantly improve the performances such as the antistripping of prefabricated section, due to smooth surface, dry slag reduces, and ladle does not increase weight, repair ladle and reduce with the workload of unpacking, also can make the ladle prefabricated section life-span improve.
Claims (2)
1. a ladle prefabricated section lining brick working face nano method for treating, comprises the steps:
1) ladle prefabricated section working lining is placed in vacuum unit, ladle prefabricated section is vacuumized to processing, and make vacuum tightness below 0.08MPa, and pressurize is more than 3 hours;
2) under described vacuum condition, add nano aluminium oxide sol solution, make the solution can all ladle preformed bricks of submergence, the Al in aluminium colloidal sol used
2o
3solid content is at 10～25wt%, and pH value is between 3.0～6.5;
3), by vacuum unit decompress(ion), under normal atmosphere effect, make nano aluminium oxide colloidal sol enter in ladle prefabricated section;
4) the ladle prefabricated section that nano aluminium oxide was processed carries out oven drying at low temperature, and bake out temperature is below 250 DEG C;
5) the ladle prefabricated section surface thing of drying is carried out removal of impurities, polishes processing, make the surfacing of building by laying bricks or stones of prefabricated section, facilitate prefabricated section to build by laying bricks or stones.
2. ladle prefabricated section lining brick working face nano method for treating as claimed in claim 1, is characterized in that, step 5) adopts manual polishing or polishing equipment to the thing processing of ladle prefabricated section surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310025368.9A CN103964895A (en) | 2013-01-24 | 2013-01-24 | Nanometer processing method for working surface of ladle precast block lining brick |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310025368.9A CN103964895A (en) | 2013-01-24 | 2013-01-24 | Nanometer processing method for working surface of ladle precast block lining brick |
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|---|---|
| CN103964895A true CN103964895A (en) | 2014-08-06 |
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|---|---|---|---|
| CN201310025368.9A Pending CN103964895A (en) | 2013-01-24 | 2013-01-24 | Nanometer processing method for working surface of ladle precast block lining brick |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107199620A (en) * | 2016-03-16 | 2017-09-26 | 上海悦心健康集团股份有限公司 | A kind of distribution device of Ultramicro-powder vitreous stone base brick |
| CN116003165A (en) * | 2022-11-16 | 2023-04-25 | 西安聚能高温合金材料科技有限公司 | Surface strengthening method of shaped refractory material |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005324119A (en) * | 2004-05-14 | 2005-11-24 | Mitsubishi Heavy Ind Ltd | Separation membrane and manufacturing method therefor |
| CN101550030A (en) * | 2009-05-12 | 2009-10-07 | 东北大学 | Method for preparing Al2O3 ceramic film on surface of 3D-SiC |
| CN101734946A (en) * | 2009-12-18 | 2010-06-16 | 广东工业大学 | Method for applying coating on cordierite honeycomb ceramics and applications thereof |
-
2013
- 2013-01-24 CN CN201310025368.9A patent/CN103964895A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005324119A (en) * | 2004-05-14 | 2005-11-24 | Mitsubishi Heavy Ind Ltd | Separation membrane and manufacturing method therefor |
| CN101550030A (en) * | 2009-05-12 | 2009-10-07 | 东北大学 | Method for preparing Al2O3 ceramic film on surface of 3D-SiC |
| CN101734946A (en) * | 2009-12-18 | 2010-06-16 | 广东工业大学 | Method for applying coating on cordierite honeycomb ceramics and applications thereof |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107199620A (en) * | 2016-03-16 | 2017-09-26 | 上海悦心健康集团股份有限公司 | A kind of distribution device of Ultramicro-powder vitreous stone base brick |
| CN116003165A (en) * | 2022-11-16 | 2023-04-25 | 西安聚能高温合金材料科技有限公司 | Surface strengthening method of shaped refractory material |
| CN116003165B (en) * | 2022-11-16 | 2023-11-24 | 西安聚能高温合金材料科技有限公司 | Surface strengthening method of shaped refractory material |
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Application publication date: 20140806 |