CN101096294A - Method for preventing hydration during preparation of magnesia-containing fire-resistant material sample - Google Patents
Method for preventing hydration during preparation of magnesia-containing fire-resistant material sample Download PDFInfo
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- CN101096294A CN101096294A CNA2006100282431A CN200610028243A CN101096294A CN 101096294 A CN101096294 A CN 101096294A CN A2006100282431 A CNA2006100282431 A CN A2006100282431A CN 200610028243 A CN200610028243 A CN 200610028243A CN 101096294 A CN101096294 A CN 101096294A
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- magnesia
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- containing fire
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- resistant material
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Abstract
The invention relates to a hydration-avoidance method when making the fire resistive material guide sample with magnesium oxide in the technique field of making the fire resistive material chemical analysis guide sample, which solves the hydration-avoidance technique problem of the fire resistive material guide sample and guarantees stability of the guide sample. The method comprises the following steps: disintegrating magnesite material at 120-320 grain size; putting the magnesite material in the aqueous vapor atomization tank in order to absorb moisture and saturate; putting the saturated magnesite material in the high temperature furnace in order to lightly burn; keeping the temperature at 700Deg. C-1000Deg. C for more than five hours; bruising, disintegrating and grinding the light-burned magnesite material into fines; getting the magnesite material with the hydration-avoidance property. The invention is used for the material preliminary treatment of the fire resistive material chemical analysis guide sample.
Description
Technical field: the present invention relates to a kind of technical field of refractory materials chemical analytical standard sample making, particularly a kind of method of aquation when preventing to prepare magnesia-containing fire-resistant material sample.
Background technology: at present the range of application of China's refractory industry is more and more wider, is that the refractory materials of main raw material(s) manufacturing is widely used on the various kilns and Thermal Equipment of Iron and Steel Production with various magnesia.For example refractory materials is built by laying bricks or stones at High Temperature Furnaces Heating Apparatus liner etc., the refractory materials of building by laying bricks or stones at ladle liner directly contacts with molten steel, molten steel corrode or the process of peeling off in, its main chemical ingredients can not influence the quality of molten steel, therefore the chemical detection of refractory products is most important, and therefore the standard model precision that is used to detect and the importance of accuracy are conspicuous.Although part refractory materials standard model is arranged at present, with the tempo of refractory technology and for not matching, refractory materials standard model preparation method is also perfect not to the utmost.With the magnesite refractory standard model is example, during the preparation standard sample, because there is a large amount of high reactivity points in mgo surface, easily absorbs water in air and produces hydration phenomena, after the preparation, can not guarantee the stability of standard model.
Summary of the invention: the purpose of this invention is to provide a kind of method of aquation when preventing to prepare magnesia-containing fire-resistant material sample, mainly solve the magnesite refractory standard model and easily absorb water in air and produce hydration phenomena, can not guarantee the technical problem of the stability of standard model.
Technical scheme of the present invention is: a kind of method of aquation when preventing to prepare magnesia-containing fire-resistant material sample, may further comprise the steps: it is 120 orders-320 order (0.125mm～0.044mm) that the magnesia material after at first will calcining is crushed to granularity, fully moisture absorption is saturated the magnesia material to be put into water vapour atomizing case again, then that moisture absorption is saturated magnesia material insert carry out in the High Temperature Furnaces Heating Apparatus light-burned, when temperature reaches 700 ℃～1000 ℃, insulation is more than 5 hours, with the stove naturally cooling, magnesia material after light-burned is broken once more, pulverize, grind into fine powder magnesia material, the magnesia material of acquisition has the hydrating capacity of preventing.
The invention has the beneficial effects as follows: because the present invention has adopted the step of the light-burned and then secondary powder process of first saturated secondary again, the ability that makes magnesium oxide form high reactivity point once more reduces greatly, just reduced magnesian surface chemistry mobility, can effectively improve and contain the very easily problem of aquation of magnesite refractory standard model, it satisfies the general property of standard model, promptly satisfies the requirement of homogeneity, stability and magnitude tracing.Utilize inventive method prepared contain the magnesium oxide standard model, meet even, the stable sample of respective country standard code.The development research of the application of this standard model employed magniferous fire resistive material product when smelting Clean Steel, ultra-clean steel, the erosion that solves process when smelting will play an important role, and be the check chemical examination work of China, play very crucial technical support.
Embodiment:
Embodiment 1, a kind of method of aquation when preventing to prepare magnesia-containing fire-resistant material sample, may further comprise the steps: it is 150 orders that the periclasite after at first will calcining is crushed to granularity, to pulverize back magnesia material again divides and puts into water vapour atomizing case in charging tray fully moisture absorption is saturated, be that volumetric expansion reaches Δ V=77.7%, then that moisture absorption is saturated magnesia material inserts that to carry out secondary in the High Temperature Furnaces Heating Apparatus light-burned, when temperature reaches 700 ℃～1000 ℃, be incubated 5 hours, with the stove naturally cooling, magnesia material after secondary is light-burned is broken once more, pulverize, grind in the process of fine powder, greatly reduce mgo surface active site (chemical activity).This treated magnesia material can be used to prepare the Powdered chemical analysis standard model that the surface is difficult for aquation.This standard model not only can be used for the test of refractory materials x-ray fluorescence spectrometry precision and as outside the series standard sample, can also be used for the general chemical analysis of refractory materials.
Embodiment 2, and the granularity after the fragmentation of magnesia material is 200 orders, the 800 ℃ of insulations 6 hours in High Temperature Furnaces Heating Apparatus of the saturated magnesia material of moisture absorption, and all the other are identical with embodiment 1.
Embodiment 3, and the granularity after the fragmentation of magnesia material is 250 orders, the 850 ℃ of insulations 5.5 hours in High Temperature Furnaces Heating Apparatus of the saturated magnesia material of moisture absorption, and all the other are identical with embodiment 1.
Embodiment 4, and the granularity after the fragmentation of magnesia material is 300 orders, the 900 ℃ of insulations 6.5 hours in High Temperature Furnaces Heating Apparatus of the saturated magnesia material of moisture absorption, and all the other are identical with embodiment 1.
Claims (4)
1, a kind of method of aquation when preventing to prepare magnesia-containing fire-resistant material sample, may further comprise the steps: the magnesia material after at first will calcining is pulverized, to pulverize the magnesia material again, to put into the abundant moisture absorption of water vapour atomizing case saturated, then that moisture absorption is saturated magnesia material insert carry out in the High Temperature Furnaces Heating Apparatus light-burned, with the stove naturally cooling, magnesia material after light-burned is broken once more, pulverize, grind into fine powder magnesia material, and the magnesia material of acquisition has the hydrating capacity of preventing.
2, the method for aquation when preventing to prepare magnesia-containing fire-resistant material sample according to claim 1 is characterized in that it is the 120-320 order that the magnesia material is pulverized the back granularity.
3, the method for aquation when preventing to prepare magnesia-containing fire-resistant material sample according to claim 1 is characterized in that, pulverizes back magnesia material and divides put into water vapour atomizing case in charging tray.
4, the method for aquation when preventing to prepare magnesia-containing fire-resistant material sample according to claim 1 is characterized in that when light roasting temperature reached 700 ℃～1000 ℃, insulation was more than 5 hours.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100282431A CN100473621C (en) | 2006-06-28 | 2006-06-28 | Method for preventing hydration during preparation of magnesia-containing fire-resistant material sample |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100282431A CN100473621C (en) | 2006-06-28 | 2006-06-28 | Method for preventing hydration during preparation of magnesia-containing fire-resistant material sample |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101096294A true CN101096294A (en) | 2008-01-02 |
| CN100473621C CN100473621C (en) | 2009-04-01 |
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| CNB2006100282431A Active CN100473621C (en) | 2006-06-28 | 2006-06-28 | Method for preventing hydration during preparation of magnesia-containing fire-resistant material sample |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102351546A (en) * | 2011-07-01 | 2012-02-15 | 上海彭浦特种耐火材料厂 | Method for resisting cracking of prefabricated components made of magnesia castable caused by baking |
| CN105985533A (en) * | 2015-02-26 | 2016-10-05 | 宝山钢铁股份有限公司 | Method for preparing super high polymer plastic additive from oriented silicon steel magnesium oxide waste |
| CN112456973A (en) * | 2020-12-08 | 2021-03-09 | 武汉钢铁集团耐火材料有限责任公司 | Magnesium current stabilizer for tundish and preparation method thereof |
-
2006
- 2006-06-28 CN CNB2006100282431A patent/CN100473621C/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102351546A (en) * | 2011-07-01 | 2012-02-15 | 上海彭浦特种耐火材料厂 | Method for resisting cracking of prefabricated components made of magnesia castable caused by baking |
| CN105985533A (en) * | 2015-02-26 | 2016-10-05 | 宝山钢铁股份有限公司 | Method for preparing super high polymer plastic additive from oriented silicon steel magnesium oxide waste |
| CN105985533B (en) * | 2015-02-26 | 2018-10-02 | 宝山钢铁股份有限公司 | The method that orientation silicon steel magnesia waste manufactures supra polymer plastic additive |
| CN112456973A (en) * | 2020-12-08 | 2021-03-09 | 武汉钢铁集团耐火材料有限责任公司 | Magnesium current stabilizer for tundish and preparation method thereof |
| CN112456973B (en) * | 2020-12-08 | 2022-06-28 | 武汉钢铁集团耐火材料有限责任公司 | Magnesium current stabilizer for tundish and preparation method thereof |
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| Publication number | Publication date |
|---|---|
| CN100473621C (en) | 2009-04-01 |
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