CN107162432B - A kind of device of liquid blast furnace production mineral wool - Google Patents

A kind of device of liquid blast furnace production mineral wool Download PDF

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Publication number
CN107162432B
CN107162432B CN201710468712.XA CN201710468712A CN107162432B CN 107162432 B CN107162432 B CN 107162432B CN 201710468712 A CN201710468712 A CN 201710468712A CN 107162432 B CN107162432 B CN 107162432B
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furnace
slag
mineral wool
blast furnace
electrode
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CN107162432A (en
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许玉蕊
许征鹏
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许玉蕊
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    • CCHEMISTRY; METALLURGY
    • C03GLASS; MINERAL OR SLAG WOOL
    • C03BMANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B37/00Manufacture or treatment of flakes, fibres, or filaments from softened glass, minerals, or slags
    • CCHEMISTRY; METALLURGY
    • C03GLASS; MINERAL OR SLAG WOOL
    • C03CCHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
    • C03C13/00Fibre or filament compositions
    • C03C13/06Mineral fibres, e.g. slag wool, mineral wool, rock wool

Abstract

The invention discloses a kind of devices of liquid blast furnace production mineral wool, mainly by: slag truck ladle (1), middle slag tank (2), ac arc furnace (3), four-roller centrifuge (4) and cotton collecting machine (5) form, the present invention uses raw material for blast furnace hot slag, reheating is not required to compared with cold slag produces mineral wool, energy consumption is reduced, production cost is reduced.Use furnace bottom overflow slag mode provide high temperature melt cinder ensure that it is continuous for mineral wool production line provide regime flow, temperature, ingredient, viscosity slag raw material, ensure that mineral wool production line output high standard, high-quality mineral wool product lay the foundation, the resistance to material of electric arc furnaces is washed away when reducing charging simultaneously, ensure that the resistance to material continuous use service life.

Description

A kind of device of liquid blast furnace production mineral wool
Technical field
The invention belongs to utilization of waste as resource fields, are related to a kind of utilization liquid blast furnace comprehensive utilization technique, special It is not related to a kind of device of liquid blast furnace production mineral wool.
Background technique
Mineral wool is and to add using industrial slags such as blast furnace slow cooling block slags as primary raw material with other materials by remelting, fiber Change and manufactured inorganic fibre, can be made into the various products such as plate, pipe, felt, have insulation, heat preservation, fire prevention, anti-corrosion, humidity, The multiple functions such as sound absorption, antidetonation are widely used in the fields such as building, industrial equipment and the vehicles, such as building exterior wall heat preserving, interior wall Fire-proof sound insulation, Industrial Stoves and pipe insulation, ship are heat-insulated etc..
Liquid blast furnace temperature is good residual heat resources, the waste heat phase that blast furnace cinder per ton contains at 1400 DEG C or more When the heat caused by 60Kg standard coal completely burned.For the melting sensible heat of high-temperature liquid state blast-furnace slag, State of Blast Furnace is developed The height of slag adds utility value, directly uses liquid blast-furnace slag, and research directly prepares mineral wool by liquid blast-furnace slag Technology substantially increases economic benefit, while effectively preventing the oxysulfide that blast furnace cinder releases during water quenching.Cause This, directly prepares concern of the mineral wool technology by more and more researchers and enterprise using molten state blast furnace slag.
Existing mineral wool production technology mostly using slow cooling at block-like blast-furnace cinder as primary raw material, and be equipped with a certain amount of Quartzite or other rocks adjust acidity coefficient, by the way that inorganic fibre is made after furnace cupola remelting, fibrosis.There are resources Waste is serious and causes the drawbacks of greatly polluting to environment.
Summary of the invention
The technical problem to be solved by the present invention is to provide a kind of liquid height in view of the deficiency of the prior art Clinker produces the device of mineral wool, mainly by: slag truck ladle (1), middle slag tank (2), ac arc furnace (3), four-roller centrifuge (4) and Cotton collecting machine (5) composition, slag truck ladle (1) pick up liquid blast furnace from tap cinder mouth by locomotive and are transported to positioned at ac arc furnace (3) Liquid blast furnace is slowly added to ac arc furnace (3) through slag inlet (321) by the middle slag tank (2) on top, middle slag tank (2), And flyash and acidic excipient is added by auxiliary material entrance (322), reach slag acidity coefficient between 1.2 ~ 1.6, is heated to Four-roller centrifuge (4) are flowed into after 1480 DEG C ~ 1550 DEG C, and slag is dispersed and is drawn into fiber under the influence of centrifugal force, molding Fiber sprinkling size blows to cotton collecting machine (5) together;The ac arc furnace (3) is mainly by furnace body (31) and bell (32) two It is grouped as, bell (32) is located at the top of furnace body (31), is equipped with slag inlet (321) and auxiliary material entrance (322);Furnace body (31) is cylinder Shape structure, bottom are equipped with three-phase alternating current electrode (33), and three-phase alternating current electrode (33) is the annulus that three sector structures surround Shape carries out insulation gap by insulating refractories (36) between three-phase, and each electrode of three-phase alternating current electrode (33) is respectively by gold Belong to electrode (331) and fire resisting electrode (332) two parts composition, the diverging electrodes that metal electrode (331) is made into using a plurality of copper rod It is welded on fan-shaped copper sheet and forms, the length of diverging electrodes is the 2/3 of furnace bottom thickness, and fan-shaped copper sheet part is exposed at furnace body (31) It is external;It is made firm by ramming first with insulating refractories (36) layering to the 1/3 of furnace bottom part overall thickness after positioning metal electrode (311), Then continue layering using conduction refractory in three-phase alternating current electrode (33) position to make firm by ramming, rest part continues to use insulated fireproof Completion is made in material (36) layering firm by ramming;Furnace body (31) side be equipped with overflow cinder notch (38), overflow cinder notch (38) drawn from furnace bottom side and to Four-roller centrifuge (4) are connected at top to the 1/5 of furnace body height;Inside top in excessive cinder notch (38) is equipped with temperature measuring equipment (381).
Three-phase alternating current electrode (33) is separately connected three-phase furnace low pressure side A B C three phase mains.
The fire resisting electrode (332) is the conductive compound ramming material of magnesium carbonaceous, resistivity≤3 × 10 after carbonization-4 Ω m, bulk density >=2.8g/cm3, compressive resistance >=20Mpa;Pole piece insulate (35) and insulating refractories (36) are insulation The calcareous compound ramming material of magnesium.
Detailed description of the invention
Specific embodiments of the present invention will be described in further detail with reference to the accompanying drawing;
Attached drawing 1 show present system structural schematic diagram
Attached drawing 2 show arc furnace bottom of the present invention top partial view diagram
Explanation is marked in figure
1, slag truck ladle, 2, middle slag tank, 3, electric arc furnaces, 4, four-roller centrifuge, 5, cotton collecting machine, 31, furnace body, 32, bell, 33, three-phase alternating current electrode, 35, pole piece insulation, 36, insulating refractories, 37, refractory brick, 38, excessive cinder notch, 39, residue mouth, 321, slag inlet, 322, auxiliary material entrance, 331, metal electrode, 332, fire resisting electrode, 381, temperature measuring equipment.
Specific embodiment
The device of the present invention a kind of liquid blast furnace production mineral wool, mainly by slag truck ladle (1), middle slag tank (2), exchange Electric arc furnaces (3), four-roller centrifuge (4) and cotton collecting machine (5) composition, when tap cinder, liquid blast furnace flows into slag truck ladle along chute Interior, slag truck ladle (1) is transported to the middle slag tank (2) positioned at ac arc furnace (3) top by locomotive, and middle slag tank (2) is by liquid height Clinker is slowly added to ac arc furnace (3) through slag inlet (321), and flyash and acidic excipient is added by auxiliary material entrance (322), Reach slag acidity coefficient between 1.2 ~ 1.6, four-roller centrifuge (4) are flowed into after being heated to 1480 DEG C ~ 1550 DEG C in centrifugal force Under the action of slag dispersed and be drawn into fiber, molding fiber sprinkling size blows to cotton collecting machine (5) together;The exchange Electric arc furnaces (3) is mainly made of furnace body (31) and bell (32) two parts, and bell (32) is located at the top of furnace body (31), is equipped with slag input Mouth (321) and auxiliary material entrance (322);Furnace body (31) is cylinder-like structure, and bottom is equipped with three-phase alternating current electrode (33), three intersections It is one circular that galvanic electricity pole (33) is that three sector structures surround, between being insulated between three-phase by insulating refractories (36) Every each electrode of three-phase alternating current electrode (33) is made of metal electrode (331) and fire resisting electrode (332) two parts respectively, gold Category electrode (331) is welded on fan-shaped copper sheet using the diverging electrodes that a plurality of copper rod is made into and is formed, and the length of diverging electrodes is furnace The 2/3 of base thickness degree, it is external that fan-shaped copper sheet part is exposed at furnace body (31);Positioning metal electrode uses insulated fireproof after (311) first Material (36) layering is made firm by ramming to the 1/3 of furnace bottom part overall thickness, then in three-phase alternating current electrode (33) position using conductive fire resisting Material continues layering and makes firm by ramming, and rest part, which continues to be layered with insulating refractories (36), makes completion firm by ramming;Furnace body (31) side is equipped with It overflows cinder notch (38), overflows cinder notch (38) by the extraction of furnace bottom side and upwards to 1/5 connection four-roller centrifuge of furnace body height (4);Inside top in excessive cinder notch (38) is equipped with temperature measuring equipment (381).
Three-phase alternating current electrode (33) is separately connected electric furnace low pressure side power supply A B C three-phase.In furnace interior shape after energization At the rotating excitation field of fixed-direction, play the role of simultaneously to electromagnetic agitation in furnace in smelting process.
The fire resisting electrode (332) is the conductive compound ramming material of magnesium carbonaceous, resistivity≤3 × 10 after carbonization-4 Ω m, bulk density >=2.8g/cm3, compressive resistance >=20Mpa;Pole piece insulate (35) and insulating refractories (36) are insulation The calcareous compound ramming material of magnesium.
By excessive cinder notch (38) the interior melt cinder temperature of temperature measuring equipment (381) real-time monitoring electric arc furnaces, reach 1480 DEG C in temperature Before, keep in arc furnace liquid level to be lower than and overflow cinder notch (38), and high current is smelted, when temperature reach 1480 DEG C ~ After 1550 DEG C, middle slag tank (2) starts to supplement blast furnace melt cinder to slag inlet (321), and high temperature melt cinder is made to overflow by excessive cinder notch (38) Out;And flyash and acidic excipient is added by auxiliary material entrance (322) while supplementing blast furnace melt cinder, reach slag acidity coefficient To between 1.2 ~ 1.6, by adjusting electric arc furnace smelting electric current, the addition of the magnitude of recruitment and auxiliary material of blast furnace melt cinder is controlled, high temperature is made Melt cinder endlessly flows out to four-roller centrifuge from excessive cinder notch, and melt cinder is dispersed under high speed centrifugation effect and is drawn into fibre Dimension, molding fiber sprinkling size blow to cotton collecting machine (5) together.When needing long period blowing out or to be overhauled to electric arc furnaces When, it needs to open residue mouth (39) and excludes furnace interior residue, to prevent cooled and solidified;It is residual using fire clay closure after the completion of maintenance Cinder notch (39).
The present invention uses raw material for blast furnace hot slag, is not required to reheating compared with cold slag produces mineral wool, reduces the energy and disappears Consumption reduces production cost.Furnace bottom slag mode of overflowing is used to provide high temperature melt cinder and ensure that and continuous provide stationary flow for mineral wool production line Amount, temperature, ingredient, viscosity slag raw material, it is ensured that mineral wool production line output high standard, high-quality mineral wool product lay the foundation, The resistance to material of electric arc furnaces is washed away when reducing charging simultaneously, ensure that the resistance to material continuous use service life.

Claims (4)

1. a kind of device of liquid blast furnace production mineral wool, mainly by slag truck ladle (1), middle slag tank (2), ac arc furnace (3), four-roller centrifuge (4) and cotton collecting machine (5) composition, it is characterised in that: when tap cinder, liquid blast furnace is flowed into along chute In slag truck ladle, slag truck ladle (1) is transported to the middle slag tank (2) positioned at ac arc furnace (3) top by locomotive, and middle slag tank (2) will Liquid blast furnace is slowly added to ac arc furnace (3) through slag inlet (321), and flyash and acid is added by auxiliary material entrance (322) Property auxiliary material, reach slag acidity coefficient between 1.2 ~ 1.6, after being heated to 1480 DEG C ~ 1550 DEG C flow into four-roller centrifuge (4) exist Slag is dispersed and is drawn into fiber under the action of centrifugal force, and molding fiber sprinkling size blows to cotton collecting machine (5) together;
The ac arc furnace (3) is mainly made of furnace body (31) and bell (32) two parts, and bell (32) is located at furnace body (31) Top is equipped with slag inlet (321) and auxiliary material entrance (322);Furnace body (31) is cylinder-like structure, and bottom is equipped with three-phase alternating current Pole (33), it is one circular that three-phase alternating current electrode (33) is that three sector structures surround, by insulating refractories between three-phase (36) insulation gap is carried out, each electrode of three-phase alternating current electrode (33) is respectively by metal electrode (331) and fire resisting electrode (332) Two parts composition, metal electrode (331) are welded on fan-shaped copper sheet using the diverging electrodes that a plurality of copper rod is made into and are formed, forked electricity The length of pole is the 2/3 of furnace bottom thickness, and it is external that fan-shaped copper sheet part is exposed at furnace body (31);Positioning metal electrode (311) is first afterwards First made firm by ramming with insulating refractories (36) layering to the 1/3 of furnace bottom part overall thickness, then in three-phase alternating current electrode (33) position Continue layering using conduction refractory to make firm by ramming, rest part, which continues to be layered with insulating refractories (36), makes completion firm by ramming;Furnace body (31) side, which is equipped with, overflows cinder notch (38), overflows cinder notch (38) by the extraction of furnace bottom side and upwards to 1/5 connection of furnace body height Four-roller centrifuge (4);Inside top in excessive cinder notch (38) is equipped with temperature measuring equipment (381).
2. a kind of device of liquid blast furnace production mineral wool according to claim 1, it is characterised in that: temperature measuring equipment (381) excessive cinder notch (38) interior melt cinder temperature of real-time monitoring electric arc furnaces keeps liquid level in arc furnace before temperature reaches 1480 DEG C Lower than excessive cinder notch (38), and high current is smelted, and after temperature reaches 1480 DEG C ~ 1550 DEG C, middle slag tank (2) starts Blast furnace melt cinder is supplemented to slag inlet (321), high temperature melt cinder is made to pass through cinder notch (38) spilling of overflowing.
3. a kind of device of liquid blast furnace production mineral wool according to claim 1, it is characterised in that: three-phase alternating current electrode (33) be separately connected electric furnace low pressure side power supply A B C three-phase, after energization furnace interior formed fixed-direction rotating excitation field, Play the role of simultaneously to electromagnetic agitation in furnace in smelting process.
4. a kind of device of liquid blast furnace production mineral wool according to claim 1, it is characterised in that: the fire resisting electrode (332) for the conductive compound ramming material of magnesium carbonaceous, resistivity≤3 × 10 after carbonization-4Ω m, bulk density >=2.8g/ cm3, compressive resistance >=20Mpa;Insulating refractories (36) are the calcareous compound ramming material of magnesium of insulation.
CN201710468712.XA 2017-06-20 2017-06-20 A kind of device of liquid blast furnace production mineral wool Active CN107162432B (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108726867A (en) * 2018-07-26 2018-11-02 国商天时建(北京)环保科技有限公司 A kind of rock wool production system

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102659309A (en) * 2012-03-27 2012-09-12 马钢(集团)控股有限公司 Method for processing mineral wool
CN103353234A (en) * 2013-07-26 2013-10-16 朱兴发 Bottom flowing type coaxial electric heating core graphite water gap device of electromagnetic induction slag smelting furnace
CN104261687A (en) * 2014-09-07 2015-01-07 由伟 Mineral wool based on blast furnace slag and manufacturing method of mineral wool
CN104909540A (en) * 2015-05-15 2015-09-16 西安建筑科技大学 Melting method for production of mineral wool from liquid blast furnace slag
CN106587634A (en) * 2016-12-16 2017-04-26 武汉理工大学 Marbled glass ceramics directly employing fusion blast furnace slag and preparation method of marbled glass ceramics

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102659309A (en) * 2012-03-27 2012-09-12 马钢(集团)控股有限公司 Method for processing mineral wool
CN103353234A (en) * 2013-07-26 2013-10-16 朱兴发 Bottom flowing type coaxial electric heating core graphite water gap device of electromagnetic induction slag smelting furnace
CN104261687A (en) * 2014-09-07 2015-01-07 由伟 Mineral wool based on blast furnace slag and manufacturing method of mineral wool
CN104909540A (en) * 2015-05-15 2015-09-16 西安建筑科技大学 Melting method for production of mineral wool from liquid blast furnace slag
CN106587634A (en) * 2016-12-16 2017-04-26 武汉理工大学 Marbled glass ceramics directly employing fusion blast furnace slag and preparation method of marbled glass ceramics

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