CN109369196A - A kind of induction furnace quartziferous ramming mass and preparation method thereof - Google Patents

A kind of induction furnace quartziferous ramming mass and preparation method thereof Download PDF

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CN109369196A
CN109369196A CN201811397190.XA CN201811397190A CN109369196A CN 109369196 A CN109369196 A CN 109369196A CN 201811397190 A CN201811397190 A CN 201811397190A CN 109369196 A CN109369196 A CN 109369196A
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quartziferous
induction furnace
partial size
ramming mass
fine powder
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徐义彪
李亚伟
桑绍柏
王庆虎
朱天彬
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Wuhan University of Science and Engineering WUSE
Wuhan University of Science and Technology WHUST
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Wuhan University of Science and Engineering WUSE
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Abstract

The present invention relates to a kind of induction furnace quartziferous ramming masses and preparation method thereof.Its technical solution is: using the vitreous silica fine powder of the natura quartz particles of 50~70wt%, the vitreous silica particle of 20~40wt% and 5~15wt% as raw material, boric acid fine powder, the titanium oxide fine powder of 0.2~1.0wt%, the alumina powder of 0.5~2.0wt%, the light calcined magnesia fine powder of 0.2~0.8wt% and the zirconia sol of 0.5~2.0wt% of the additional 0.2~0.8wt% of raw material, it is uniformly mixed to get induction furnace quartziferous ramming mass.Wherein: the SiO of natura quartz particles2Content ﹥ 99wt%；The grain composition of natura quartz particles is: partial size is that 5~3mm accounts for 15~30wt% of natural quartz, and partial size, which is less than 3mm and is more than or equal to 1mm, accounts for 15~30wt% of natural quartz, and partial size, which is less than 1mm and is more than or equal to 0.1mm, accounts for 50~60wt% of natural quartz.The made product refractoriness of the present invention is high, volume stability is good, elevated temperature strength is big, antistrip performance is excellent and anti-permeability performance is good.

Description

A kind of induction furnace quartziferous ramming mass and preparation method thereof
Technical field
The invention belongs to quartziferous ramming mass technical fields.More particularly to a kind of induction furnace quartziferous ramming mass and its system Preparation Method.
Background technique
Induction furnace has the characteristics that efficient, energy conservation, production capacity is strong and Melting Quality is good, is domestic many machine castings enterprises The main metallurgical equipment of industry, the smelting non-ferrous metal of medium and small steel-making enterprise and heat preservation.Quartziferous ramming mass is cheap, and has The advantages that good thermal shock resistance, mechanical strength and acid-resisting scouring, it is widely used in induction furnace as furnace lining material.
In recent years, since energy-saving needs, induction furnace develop towards large capacity, high-power direction, lead to its furnace The operating condition of lining refractories is increasingly harsh, and also to furnace lining material, more stringent requirements are proposed.Conventional quartz matter ramming mass is used More boric acid is sintering aid, due to that can generate more liquid phase under high temperature, quartziferous ramming mass elevated temperature strength is caused to significantly reduce.This Outside, with the variation of temperature, SiO can occur in quartziferous ramming mass2Crystal transfer and generate biggish volume expansion so that stone Line variation increases after the burning of English matter ramming mass and apparent porosity becomes larger, and destroys the volume stability of quartziferous ramming mass, causes Quartziferous ramming mass cracking and peeling, metal or slag largely permeate, and seriously affect the service life of quartziferous ramming mass.
Summary of the invention
The present invention is directed to overcome prior art defect, and it is an object of the present invention to provide a kind of refractoriness is high, volume stability is good, high temperature Intensity is big, antistrip performance is excellent and anti-permeability performance good induction furnace quartziferous ramming mass and preparation method thereof.
To achieve the above object, the technical scheme adopted by the invention is that: first with the natura quartz particles of 50~70wt%, The vitreous silica fine powder of the vitreous silica particle of 20~40wt% and 5~15wt% are raw material, then the additional raw material 0.2~ The boric acid fine powder of 0.8wt%, the titanium oxide fine powder of 0.2~1.0wt%, the alumina powder of 0.5~2.0wt%, 0.2~ The light calcined magnesia fine powder of 0.8wt% and the zirconia sol of 0.5~2.0wt% are uniformly mixed, obtained induction furnace quartziferous Ramming mass.
The SiO of the natura quartz particles2Content ﹥ 99wt%；The grain composition of the natura quartz particles is: partial size is 5~3mm accounts for the 15~30wt% of natural quartz, partial size be less than 3mm and be more than or equal to 1mm account for the natural quartz 15~ 30wt%, partial size, which is less than 1mm and is more than or equal to 0.1mm, accounts for the 50~60wt% of natural quartz.
The SiO of the vitreous silica particle2Content ﹥ 98.5wt%；The grain composition of the vitreous silica particle is: partial size Account for the 15~30wt% of vitreous silica for 5~3mm, partial size be less than 3mm and be more than or equal to 1mm account for the vitreous silica 50~ 60wt%, partial size, which is less than 1mm and is more than or equal to 0.1mm, accounts for the 15~30wt% of vitreous silica.
The SiO of the vitreous silica fine powder2Content ﹥ 99wt%, partial size are 75 μm of ﹤.
The TiO of the titanium oxide fine powder2Content ﹥ 98wt%, partial size are 45 μm of ﹤.
The Al of the alumina powder2O3Content ﹥ 99wt%, partial size are 5 μm of ﹤.
The content of MgO ﹥ 98wt% of the light calcined magnesia fine powder, partial size are 45 μm of ﹤.
The ZrO of the zirconia sol2Content is 20~40wt%, and partial size is 20~70nm.
Due to the adoption of the above technical scheme, the present invention has following good effect compared with prior art:
Induction furnace prepared by the present invention measures few, production in ramming mass under high temperature with quartziferous ramming mass institute's boronic acid containing (sintering aid) Raw amount of liquid phase is few, avoids the formation of Continuous Liquid Phase, assigns product high refractoriness.The TiO being added in the present invention2It can be with As mineralizer, at a lower temperature (580 DEG C or so) promote products in SiO2Occur crystal form conversion, it is therefore prevented that under high temperature because SiO2Crystal form conversion generates big volume expansion, and line variation is excessive after avoiding product burning, makes prepared induction furnace quartz Matter ramming mass has high volume stability.
In use with quartziferous ramming mass, alumina powder, light calcined magnesia are thin for induction furnace prepared by the present invention Powder and zirconium colloidal sol decompose the zirconium oxide generated can react generation mullite, forsterite and zirconium English respectively with vitreous silica fine powder Stone.Above-mentioned reaction-sintered has effectively facilitated the densification of product, assigns the good elevated temperature strength of product and anti-permeability performance；And it is raw At mullite and zircon have excellent anti-permeability performance, thermal shock resistance and scour resistance, be dispersed in matrix It is interior, the antistrip performance of induction furnace quartziferous ramming mass can be significantly improved.
The physicochemical property of the obtained induction furnace quartziferous ramming mass of this reality invention are as follows: 1500 DEG C × 3h bulk density is 2.40~2.50g/cm3, compressive resistance is 10.5~13.0MPa, and Linear change rate is 1.0~2.8%；1550 DEG C × 3h volume is close Degree is 2.44~2.54g/cm3, compressive resistance is 11.5~14.0MPa, and Linear change rate is 1.2~3.0%；Refractoriness is 1610 ~1670 DEG C, furnace life is 110~160 heats.
Therefore, the induction furnace prepared by the present invention is high with refractoriness with quartziferous ramming mass, volume stability is good, high temperature The feature that intensity is big, antistrip performance is excellent and anti-permeability performance is good.
Specific embodiment
The invention will be further described With reference to embodiment, not to the limitation of its protection scope:
It is first that raw material Unify legislation involved in present embodiment is as follows to avoid repeating, it is no longer superfluous in embodiment It states:
The SiO of the natura quartz particles2Content ﹥ 99wt%；The grain composition of the natura quartz particles is: partial size is 5~3mm accounts for the 15~30wt% of natural quartz, partial size be less than 3mm and be more than or equal to 1mm account for the natural quartz 15~ 30wt%, partial size, which is less than 1mm and is more than or equal to 0.1mm, accounts for the 50~60wt% of natural quartz.
The SiO of the vitreous silica particle2Content ﹥ 98.5wt%；The grain composition of the vitreous silica particle is: partial size Account for the 15~30wt% of vitreous silica for 5~3mm, partial size be less than 3mm and be more than or equal to 1mm account for the vitreous silica 50~ 60wt%, partial size, which is less than 1mm and is more than or equal to 0.1mm, accounts for the 15~30wt% of vitreous silica.
The SiO of the vitreous silica fine powder2Content ﹥ 99wt%, partial size are 75 μm of ﹤.
The TiO of the titanium oxide fine powder2Content ﹥ 98wt%, partial size are 45 μm of ﹤.
The Al of the alumina powder2O3Content ﹥ 99wt%, partial size are 5 μm of ﹤.
The content of MgO ﹥ 98wt% of the light calcined magnesia fine powder, partial size are 45 μm of ﹤.
The ZrO of the zirconia sol2Content is 20~40wt%, and partial size is 20~70nm.
Embodiment 1
A kind of induction furnace quartziferous ramming mass and preparation method thereof.Preparation method described in the present embodiment is:
First with the molten of the natura quartz particles of 50~60wt%, the vitreous silica particle of 30~40wt% and 5~15wt% Fused silica fine powder is raw material, then boric acid fine powder, the titanium oxide of 0.2~0.6wt% of the additional 0.2~0.6wt% of raw material be thin Powder, the alumina powder of 0.5~1.5wt%, the light calcined magnesia fine powder of 0.2~0.8wt% and the oxidation of 0.5~2.0wt% Zirconium colloidal sol is uniformly mixed, and induction furnace quartziferous ramming mass is made.
The physicochemical property of the quartziferous ramming mass of induction furnace prepared by the present embodiment 1 are as follows: 1500 DEG C × 3h bulk density For 2.40~2.46g/cm3, compressive resistance is 10.5~11.5MPa, and Linear change rate is 1.0~1.6%；1550 DEG C × 3h volume Density is 2.44~2.50g/cm3, compressive resistance is 11.5~12.5MPa, and Linear change rate is 1.2~1.8%；Refractoriness is 1610~1640 DEG C, furnace life is 110~120 heats.
Embodiment 2
A kind of induction furnace quartziferous ramming mass and preparation method thereof.Preparation method described in the present embodiment is:
First with the molten of the natura quartz particles of 55~65wt%, the vitreous silica particle of 25~35wt% and 5~15wt% Fused silica fine powder is raw material, then boric acid fine powder, the titanium oxide of 0.4~0.8wt% of the additional 0.4~0.8wt% of raw material be thin Powder, the alumina powder of 1.0~2.0wt%, the light calcined magnesia fine powder of 0.2~0.8wt% and the oxidation of 0.5~2.0wt% Zirconium colloidal sol is uniformly mixed, and induction furnace quartziferous ramming mass is made.
The physicochemical property of the quartziferous ramming mass of induction furnace prepared by the present embodiment 2 are as follows: 1500 DEG C × 3h bulk density For 2.42~2.48g/cm3, compressive resistance is 11.0~12.0MPa, and Linear change rate is 1.4~2.0%；1550 DEG C × 3h volume Density is 2.46~2.52g/cm3, compressive resistance is 12.0~13.0MPa, and Linear change rate is 1.6~2.2%；Refractoriness is 1620~1650 DEG C, furnace life is 115~125 heats.
Embodiment 3:
A kind of induction furnace quartziferous ramming mass and preparation method thereof.Preparation method described in the present embodiment is:
First with the molten of the natura quartz particles of 60~70wt%, the vitreous silica particle of 20~30wt% and 5~15wt% Fused silica fine powder is raw material, then boric acid fine powder, the titanium oxide of 0.6~1.0wt% of the additional 0.3~0.7wt% of raw material be thin Powder, the alumina powder of 0.8~1.8wt%, the light calcined magnesia fine powder of 0.2~0.8wt% and the oxidation of 0.5~2.0wt% Zirconium colloidal sol is uniformly mixed, and induction furnace quartziferous ramming mass is made.
The physicochemical property of the quartziferous ramming mass of induction furnace prepared by the present embodiment 3 are as follows: 1500 DEG C × 3h bulk density For 2.44~2.50g/cm3, compressive resistance is 11.5~12.5MPa, and Linear change rate is 1.8~2.4%；1550 DEG C × 3h volume Density is 2.48~2.54g/cm3, compressive resistance is 12.5~13.5MPa, and Linear change rate is 2.0~2.6%；Refractoriness is 1630~1660 DEG C, furnace life is 120~130 heats.
Embodiment 4
A kind of induction furnace quartziferous ramming mass and preparation method thereof.Preparation method described in the present embodiment is:
First with the molten of the natura quartz particles of 57~67wt%, the vitreous silica particle of 23~33wt% and 5~15wt% Fused silica fine powder is raw material, then boric acid fine powder, the titanium oxide of 0.5~0.9wt% of the additional 0.3~0.7wt% of raw material be thin Powder, the alumina powder of 0.7~1.7wt%, the light calcined magnesia fine powder of 0.2~0.8wt% and the oxidation of 0.5~2.0wt% Zirconium colloidal sol is uniformly mixed, and induction furnace quartziferous ramming mass is made.
The physicochemical property of the quartziferous ramming mass of induction furnace prepared by the present embodiment 3 are as follows: 1500 DEG C × 3h bulk density For 2.43~2.49g/cm3, compressive resistance is 12.0~13.0MPa, and Linear change rate is 2.2~2.8%；1550 DEG C × 3h volume Density is 2.47~2.53g/cm3, compressive resistance is 13.0~14.0MPa, and Linear change rate is 2.4~3.0%；Refractoriness is 1640~1670 DEG C, furnace life is 125~135 heats.
Present embodiment has following good effect compared with prior art:
The induction furnace of present embodiment preparation is measured less with quartziferous ramming mass institute's boronic acid containing (sintering aid), is smash under high temperature The amount of liquid phase generated in dnockout is few, avoids the formation of Continuous Liquid Phase, assigns product high refractoriness.Present embodiment The TiO of middle addition2It can be used as mineralizer, at a lower temperature (the 580 DEG C or so) SiO promoted in product2Crystal form occurs to turn It changes, it is therefore prevented that because of SiO under high temperature2Crystal form conversion generates big volume expansion, and line variation is excessive after avoiding product burning, makes made Standby induction furnace quartziferous ramming mass has high volume stability.
The induction furnace of present embodiment preparation with quartziferous ramming mass in use, it is alumina powder, light-burned Magnesium oxide powder and zirconium colloidal sol decompose the zirconium oxide generated can react generation mullite, forsterite respectively with vitreous silica fine powder And zircon.Above-mentioned reaction-sintered has effectively facilitated the densification of product, assigns the good elevated temperature strength of product and permeability resistance Energy；And the mullite and zircon generated has excellent anti-permeability performance, thermal shock resistance and scour resistance, it is evenly dispersed In the substrate, the antistrip performance of induction furnace quartziferous ramming mass can be significantly improved.
The physicochemical property of the quartziferous ramming mass of induction furnace obtained by this reality specific embodiment are as follows: 1500 DEG C × 3h body Product density is 2.40~2.50g/cm3, compressive resistance is 10.5~13.0MPa, and Linear change rate is 1.0~2.8%；1550℃× 3h bulk density is 2.44~2.54g/cm3, compressive resistance is 11.5~14.0MPa, and Linear change rate is 1.2~3.0%；Fire resisting Degree is 1610~1670 DEG C, and furnace life is 110~160 heats.
Therefore, the quartziferous ramming mass of induction furnace prepared by present embodiment has refractoriness height, volume stability The feature that property is good, elevated temperature strength is big, antistrip performance is excellent and anti-permeability performance is good.

Claims (8)

1. a kind of induction furnace preparation method of quartziferous ramming mass, it is characterised in that: first with the natural quartz of 50~70wt% The vitreous silica fine powder of particle, the vitreous silica particle of 20~40wt% and 5~15wt% is raw material, then the additional raw material The boric acid fine powder of 0.2~0.8wt%, the titanium oxide fine powder of 0.2~1.0wt%, the alumina powder of 0.5~2.0wt%, 0.2 The light calcined magnesia fine powder of~0.8wt% and the zirconia sol of 0.5~2.0wt% are uniformly mixed to get induction furnace quartz Matter ramming mass；
The SiO of the natura quartz particles2Content ﹥ 99wt%；The grain composition of the natura quartz particles is: partial size be 5~ 3mm accounts for the 15~30wt% of natural quartz, and partial size, which is less than 3mm and is more than or equal to 1mm, accounts for the 15~30wt% of natural quartz, Partial size, which is less than 1mm and is more than or equal to 0.1mm, accounts for the 50~60wt% of natural quartz.
2. the induction furnace according to claim 1 preparation method of quartziferous ramming mass, it is characterised in that the tekite The SiO of English particle2Content ﹥ 98.5wt%；The grain composition of the vitreous silica particle is: partial size is that 5~3mm accounts for the melting 15~30wt% of quartz, partial size, which is less than 3mm and is more than or equal to 1mm, accounts for the 50~60wt% of vitreous silica, partial size be less than 1mm and 15~the 30wt% of vitreous silica is accounted for more than or equal to 0.1mm.
3. the induction furnace according to claim 1 preparation method of quartziferous ramming mass, it is characterised in that the tekite The SiO of English fine powder2Content ﹥ 99wt%, partial size are 75 μm of ﹤.
4. the induction furnace according to claim 1 preparation method of quartziferous ramming mass, it is characterised in that the titanium oxide The TiO of fine powder2Content ﹥ 98wt%, partial size are 45 μm of ﹤.
5. the induction furnace according to claim 1 preparation method of quartziferous ramming mass, it is characterised in that the aluminium oxide The Al of micro mist2O3Content ﹥ 99wt%, partial size are 5 μm of ﹤.
6. the induction furnace according to claim 1 preparation method of quartziferous ramming mass, it is characterised in that the light-burned oxygen Change the content of MgO ﹥ 98wt% of magnesium powder, partial size is 45 μm of ﹤.
7. the induction furnace according to claim 1 preparation method of quartziferous ramming mass, it is characterised in that the zirconium oxide The ZrO of colloidal sol2Content is 20~40wt%, and partial size is 20~70nm.
8. a kind of induction furnace quartziferous ramming mass, it is characterised in that the induction furnace is shown with quartziferous ramming mass to be wanted according to right Induction furnace induction furnace prepared by the preparation method of quartziferous ramming mass described in asking any one of 1~7 is smash with quartziferous Dnockout.
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CN110128155A (en) * 2019-06-03 2019-08-16 高邮市锐意炉衬材料有限公司 A kind of furnace cupola furnace lining material and preparation method thereof
CN110204320A (en) * 2019-06-03 2019-09-06 高邮市锐意炉衬材料有限公司 A kind of coreless induction furnace furnace lining material and preparation method thereof
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CN113651623A (en) * 2021-09-10 2021-11-16 山东泰力克新材料科技有限公司 Dry-type ramming material for medium-frequency induction furnace and preparation method thereof

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Cited By (5)

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Publication number Priority date Publication date Assignee Title
CN110128155A (en) * 2019-06-03 2019-08-16 高邮市锐意炉衬材料有限公司 A kind of furnace cupola furnace lining material and preparation method thereof
CN110204320A (en) * 2019-06-03 2019-09-06 高邮市锐意炉衬材料有限公司 A kind of coreless induction furnace furnace lining material and preparation method thereof
CN111960836A (en) * 2020-08-28 2020-11-20 攀钢集团攀枝花钢铁研究院有限公司 Ramming mass for reducing oxidation of magnesia carbon brick of electric furnace and preparation and use methods thereof
CN111960836B (en) * 2020-08-28 2022-07-19 攀钢集团攀枝花钢铁研究院有限公司 Ramming material for reducing oxidation of magnesia carbon brick of electric furnace and preparation and use methods thereof
CN113651623A (en) * 2021-09-10 2021-11-16 山东泰力克新材料科技有限公司 Dry-type ramming material for medium-frequency induction furnace and preparation method thereof

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Application publication date: 20190222