CN104030705A - Preparation method of dry-type composite furnace lining of intermediate frequency furnace - Google Patents
Preparation method of dry-type composite furnace lining of intermediate frequency furnace Download PDFInfo
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- CN104030705A CN104030705A CN201410236327.9A CN201410236327A CN104030705A CN 104030705 A CN104030705 A CN 104030705A CN 201410236327 A CN201410236327 A CN 201410236327A CN 104030705 A CN104030705 A CN 104030705A
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Abstract
The invention discloses a preparation method of the dry-type composite furnace lining of an intermediate frequency furnace. The preparation method comprises the following steps of: firstly uniformly mixing raw materials formed from compact fused corundum, compact fused corundum fine powder, compact fused magnesite, a sintering agent, superfine powder, a composite additive and an explosion-proof agent; then stirring the completely mixed raw materials, and tamping the furnace lining to the furrow bottom and periphery of the intermediate frequency furnace by adopting a dry-type tamping method; constructing, then naturally drying the furnace lining, and finally heating for 24-48 hours according to the thickness of the intermediate frequency furnace by using a heating pipe or other heaters. According to the preparation method, the highest temperature is not more than 300 DEG C to be beneficial to the sufficient volatilization of moisture, so that the coil interturn insulation and integral insulation of the intermediate frequency furnace are ensured, and the intermediate frequency furnace has corresponding intensity; the furnace lining prepared through the method disclosed by the invention can be adapted to a high-heat environment and can not change the alloy elements when a neutral material is smelted.
Description
Technical field
The present invention relates to a kind of preparation method of intermediate frequency furnace dry type composite furnace wadding.
Background technology
It is the intermediate frequency furnace of 50 tons of following molten alloy that China has a large amount of volumes at present, the general baking rammed lining material of single resin-bonded that adopts is as liner, but generally just ditch basal surface one deck is relatively closely knit for ramming intermediate frequency furnace lining refractorily lined material used, and top layer is following and ditch side position is all very loose, resistance to erosion not, ubiquity is too short work-ing life, and energy consumption is high, deficiency in economic performance.And labor strength is too large during each repair maintenance, under the environment of high heat, easily cause a lot of unsafe factors.
Summary of the invention
The technical issues that need to address of the present invention are, a kind of preparation method of intermediate frequency furnace dry type composite furnace wadding is provided, and the furnace lining that this method is prepared can adapt to high thermal environment, when the melting of centering material, can not change alloying element.
Technical scheme of the present invention is: a kind of preparation method of intermediate frequency furnace dry type composite furnace wadding, is characterized in that: comprise the steps:
A, the raw material being comprised of fine and close fused corundom, fine and close fused corundom fine powder, fine and close electrosmelted magnesite clinker, agglutinant, super-fine powder, composite additive and detonation suppressor is evenly mixed;
B, the raw material mixing in steps A is added in forced mixer and is stirred, after stirring, add composite additive to stir, then adopt dry type ramming method by its gainster ramming to intermediate frequency furnace bottom of trench and surrounding;
After C, construction, seasoning 24 hours, to complete hydration reaction process, while rebuilding if local, seasoning 5 hours, finally heats 24-48 hour with heating tube or other well heaters according to stove thickness, and top temperature is no more than 300 ℃. in order to moisture, fully volatilize, guarantee between intermediate frequency furnace coil turn and integral insulation, and make it possess corresponding intensity.
Preferably, in composite furnace wadding, the mass percent of fine and close fused corundom, fine and close fused corundom fine powder, fine and close electrosmelted magnesite clinker, agglutinant, super-fine powder, composite additive and each component of detonation suppressor is respectively 60%, 20%, 10%, 2%, 2%, 3%, 3%.
Preferably, in composite furnace wadding, the mass percent of fine and close fused corundom, fine and close fused corundom fine powder, fine and close electrosmelted magnesite clinker, agglutinant, super-fine powder, composite additive and each component of detonation suppressor is respectively 60%, 10%, 20%, 2%, 2%, 3%, 3%.
Preferably, in composite furnace wadding, the mass percent of fine and close fused corundom, fine and close fused corundom fine powder, fine and close electrosmelted magnesite clinker, agglutinant, super-fine powder, composite additive and each component of detonation suppressor is respectively 70%, 18.4%, 10%, 0.5%, 0.5%, 0.5%, 0.1%.
Preferably, in composite furnace wadding, the mass percent of fine and close fused corundom, fine and close fused corundom fine powder, fine and close electrosmelted magnesite clinker, agglutinant, super-fine powder, composite additive and each component of detonation suppressor is respectively 65%, 15%, 15%, 1.5%, 1.5%, 1.8%, 0.2%.
In described fine and close fused corundom, granularity is 0.088～1mm accounts for 30% of fine and close fused corundom total mass, and what granularity was 1～3mm accounts for 50%, and what granularity was 3～5mm accounts for 20%.
Preferably, described fine and close fused corundom powder particle size is less than 0.044mm person and accounts for 65% of fine and close fused corundom fine powder total mass, granularity 0.044 and 0.088mm between person account for 35% of fine and close fused corundom fine powder total mass.
Preferably, described agglutinant is Suzhou mud, and described super-fine powder is corundum powder, and described detonation suppressor is metallic aluminium powder.
Preferably, described composite additive is mixed by tripoly phosphate sodium STPP, boric acid, xylogen trimagnesium phosphate.
Adopt after the technical program, this invention adds appropriate super-fine powder in batching, and the mechanism of super-fine powder is supplement and lubricate, and super-fine powder supplements the gap between aggregate and powder, and while making refractory material casting, water consumption declines; After formed body row draining divides, the duct staying is also less, so just can transfer volume density and decline apparent porosity, thereby improves the structure earthquake intensity of material, optimizes material function.In addition, super-fine powder particle top layer can be adsorbed and broken agent and form water film, has transferred lubricated effectiveness, has deepened trickling, also can optimize material function, and the density while having strengthened ramming makes that its compactness is better, intensity is higher.By above-mentioned a series of improvement, make this invention there is the premium propertiess such as the quick-drying demoulding and quick baking, prevent exploding explosion, and use the life-span in furnace life to rise appreciably, greatly reduce workman's labour intensity, improved Working environment, reduced energy consumption and increased benefit.And this invention construction is simple, is widely used in 50 tons of following mid-frequency melting furnaces.
Embodiment
A preparation method for intermediate frequency furnace dry type composite furnace wadding, comprises the steps:
A, the raw material being comprised of fine and close fused corundom, fine and close fused corundom fine powder, fine and close electrosmelted magnesite clinker, agglutinant, super-fine powder, composite additive and detonation suppressor is evenly mixed;
B, the raw material mixing in steps A is added in forced mixer and is stirred, after stirring, add composite additive to stir, then adopt dry type ramming method by its gainster ramming to intermediate frequency furnace bottom of trench and surrounding;
After C, construction, seasoning 24 hours, to complete hydration reaction process, while rebuilding if local, seasoning 5 hours, finally heats 24-48 hour with heating tube or other well heaters according to stove thickness, and top temperature is no more than 300 ℃. in order to moisture, fully volatilize, guarantee between intermediate frequency furnace coil turn and integral insulation, and make it possess corresponding intensity.
Wherein, described fine and close fused corundom comprises the fine and close fused corundom of three kinds of granularities; be respectively 0.088～1mm, 1～3mm and 3～5mm; the mass percent of the particle of three kinds of granularities in fine and close fused corundom is respectively; 0.88～1mm accounts for 30% of fine and close fused corundom total mass, and what granularity was 1～3mm accounts for 50%, and what granularity was 3～5mm accounts for 20%; multiple granularity particle mixes, and can make fine and close fused corundom better adulterate and mix with other components.
Described fine and close fused corundom fine powder comprises the fine and close fused corundom fine powder of two kinds of granularities, be respectively 0～0.044mm and 0.044～0.088mm, wherein 0～0.044mm granularity account for 65% of fine and close fused corundom fine powder total mass, granularity 0.044 and 0.088mm between person account for 35% of fine and close fused corundom fine powder total mass.
As the preferential selection in the present invention, described agglutinant is Suzhou mud, and Suzhou mud is more common in refractory materials, and cost is also low, and described super-fine powder is corundum powder, and described detonation suppressor is metallic aluminium powder.
Described additive is mixed by boric acid, tripoly phosphate sodium STPP, xylogen trimagnesium phosphate, wherein main component is boric acid, traditional additive main component is resin, the additive main component of using in the present invention is boric acid, boric acid is a kind of solubility promoter, can acceleration of sintering effect in refractory materials, avoided conventional additive because of resin baking and the flue dust and the toxic gas that in heating up, produce simultaneously, environment and staff are impacted; Secondly this additive has soon firmly, dries soon resistance to and wear-resisting effect, and original safety anti-explosive temperature is improved greatly.
Embodiment 1: in composite furnace wadding, the mass percent of fine and close fused corundom, fine and close fused corundom fine powder, fine and close electrosmelted magnesite clinker, agglutinant, super-fine powder, composite additive and each component of detonation suppressor is respectively 60%, 20%, 10%, 2%, 2%, 3%, 3%.
Embodiment 2: in composite furnace wadding, the mass percent of fine and close fused corundom, fine and close fused corundom fine powder, fine and close electrosmelted magnesite clinker, agglutinant, super-fine powder, composite additive and each component of detonation suppressor is respectively 60%, 10%, 20%, 2%, 2%, 3%, 3%.
Embodiment 3: in composite furnace wadding, the mass percent of fine and close fused corundom, fine and close fused corundom fine powder, fine and close electrosmelted magnesite clinker, agglutinant, super-fine powder, composite additive and each component of detonation suppressor is respectively 70%, 18.4%, 10%, 0.5%, 0.5%, 0.5%, 0.1%.
Embodiment 4: in composite furnace wadding, the mass percent of fine and close fused corundom, fine and close fused corundom fine powder, fine and close electrosmelted magnesite clinker, agglutinant, super-fine powder, composite additive and each component of detonation suppressor is respectively 65%, 15%, 15%, 1.5%, 1.5%, 1.8%, 0.2%.
Claims (9)
1. a preparation method for intermediate frequency furnace dry type composite furnace wadding, is characterized in that: comprise the steps:
A, the raw material being comprised of fine and close fused corundom, fine and close fused corundom fine powder, fine and close electrosmelted magnesite clinker, agglutinant, super-fine powder, composite additive and detonation suppressor is evenly mixed;
B, the raw material mixing in steps A is added in forced mixer and is stirred, after stirring, add composite additive to stir, then adopt dry type ramming method by its gainster ramming to intermediate frequency furnace bottom of trench and surrounding;
After C, construction, seasoning 24 hours, to complete hydration reaction process, while rebuilding if local, seasoning 5 hours, finally heats 24-48 hour with heating tube or other well heaters according to stove thickness, top temperature is no more than 300 ℃, in order to moisture, fully volatilize, guarantee between intermediate frequency furnace coil turn and integral insulation, and make it possess corresponding intensity.
2. the preparation method of intermediate frequency furnace dry type composite furnace wadding according to claim 1, is characterized in that: in composite furnace wadding, the mass percent of fine and close fused corundom, fine and close fused corundom fine powder, fine and close electrosmelted magnesite clinker, agglutinant, super-fine powder, composite additive and each component of detonation suppressor is respectively 60%, 20%, 10%, 2%, 2%, 3%, 3%.
3. the preparation method of intermediate frequency furnace dry type composite furnace wadding according to claim 1, is characterized in that: in composite furnace wadding, the mass percent of fine and close fused corundom, fine and close fused corundom fine powder, fine and close electrosmelted magnesite clinker, agglutinant, super-fine powder, composite additive and each component of detonation suppressor is respectively 60%, 10%, 20%, 2%, 2%, 3%, 3%.
4. the preparation method of intermediate frequency furnace dry type composite furnace wadding according to claim 1, is characterized in that: in composite furnace wadding, the mass percent of fine and close fused corundom, fine and close fused corundom fine powder, fine and close electrosmelted magnesite clinker, agglutinant, super-fine powder, composite additive and each component of detonation suppressor is respectively 70%, 18.4%, 10%, 0.5%, 0.5%, 0.5%, 0.1%.
5. the preparation method of intermediate frequency furnace dry type composite furnace wadding according to claim 1, is characterized in that: in composite furnace wadding, the mass percent of fine and close fused corundom, fine and close fused corundom fine powder, fine and close electrosmelted magnesite clinker, agglutinant, super-fine powder, composite additive and each component of detonation suppressor is respectively 65%, 15%, 15%, 1.5%, 1.5%, 1.8%, 0.2%.
6. the preparation method of intermediate frequency furnace dry type composite furnace wadding according to claim 1, it is characterized in that: in described fine and close fused corundom, granularity is 0.088～1mm accounts for 30% of fine and close fused corundom total mass, granularity be 1～3mm account for 50%, what granularity was 3～5mm accounts for 20%.
7. the preparation method of intermediate frequency furnace dry type composite furnace wadding according to claim 1, it is characterized in that: described fine and close fused corundom powder particle size is less than 0.044mm person and accounts for 65% of fine and close fused corundom fine powder total mass, granularity 0.044 and 0.088mm between person account for 35% of fine and close fused corundom fine powder total mass.
8. the preparation method of intermediate frequency furnace dry type composite furnace wadding according to claim 1, is characterized in that: described agglutinant is Suzhou mud, and described super-fine powder is corundum powder, and described detonation suppressor is metallic aluminium powder.
9. the preparation method of intermediate frequency furnace dry type composite furnace wadding according to claim 1, is characterized in that: described composite additive is mixed by tripoly phosphate sodium STPP, boric acid, xylogen trimagnesium phosphate.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104692813A (en) * | 2015-02-02 | 2015-06-10 | 海城市金福锋科技有限公司 | Aluminum-magnesium composite ramming material for medium-frequency induction furnaces |
| CN107721436A (en) * | 2017-06-06 | 2018-02-23 | 浙江德清炜烨新材料有限公司 | A kind of metallurgical intermediate frequency furnace dry type ramming material |
| CN109232006A (en) * | 2018-11-09 | 2019-01-18 | 英赛德耐火材料（镇江）有限公司 | A kind of low-porosity resistant to corrosion acidity Dry vibrating material and preparation method thereof |
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| CN102329137A (en) * | 2011-07-01 | 2012-01-25 | 上海彭浦特种耐火材料厂 | Carbon-free alumina-magnesia unburned brick and preparation method and application 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 |
| CN103224402A (en) * | 2013-05-21 | 2013-07-31 | 武汉钢铁(集团)公司 | Corundum-spinel casting material for dip pipe of RH refining furnace |
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2014
- 2014-05-28 CN CN201410236327.9A patent/CN104030705A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN102329137A (en) * | 2011-07-01 | 2012-01-25 | 上海彭浦特种耐火材料厂 | Carbon-free alumina-magnesia unburned brick and preparation method and application thereof |
| CN103224402A (en) * | 2013-05-21 | 2013-07-31 | 武汉钢铁(集团)公司 | Corundum-spinel casting material for dip pipe of RH refining furnace |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104692813A (en) * | 2015-02-02 | 2015-06-10 | 海城市金福锋科技有限公司 | Aluminum-magnesium composite ramming material for medium-frequency induction furnaces |
| CN107721436A (en) * | 2017-06-06 | 2018-02-23 | 浙江德清炜烨新材料有限公司 | A kind of metallurgical intermediate frequency furnace dry type ramming material |
| CN109232006A (en) * | 2018-11-09 | 2019-01-18 | 英赛德耐火材料（镇江）有限公司 | A kind of low-porosity resistant to corrosion acidity Dry vibrating material and preparation method thereof |
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