CN108129031A - A kind of mineral wool produced using metallurgical waste and blast furnace cinder and its production method - Google Patents

A kind of mineral wool produced using metallurgical waste and blast furnace cinder and its production method Download PDF

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Publication number
CN108129031A
CN108129031A CN201711307428.0A CN201711307428A CN108129031A CN 108129031 A CN108129031 A CN 108129031A CN 201711307428 A CN201711307428 A CN 201711307428A CN 108129031 A CN108129031 A CN 108129031A
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China
Prior art keywords
blast furnace
metallurgical waste
mineral wool
furnace cinder
additives
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Pending
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CN201711307428.0A
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Chinese (zh)
Inventor
王向锋
马光宇
刘常鹏
徐鹏飞
李卫东
张天赋
于淑娟
侯洪宇
杨大正
钱峰
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Angang Steel Co Ltd
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Angang Steel Co Ltd
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Application filed by Angang Steel Co Ltd filed Critical Angang Steel Co Ltd
Priority to CN201711307428.0A priority Critical patent/CN108129031A/en
Publication of CN108129031A publication Critical patent/CN108129031A/en
Pending legal-status Critical Current

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    • 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
    • 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
    • C03B37/01Manufacture of glass fibres or filaments
    • C03B37/04Manufacture of glass fibres or filaments by using centrifugal force, e.g. spinning through radial orifices; Construction of the spinner cups therefor

Abstract

It is to be formulated by blast furnace cinder and metallurgical waste additives by following weight percent the present invention provides a kind of mineral wool and its production method, the mineral wool produced using metallurgical waste and blast furnace cinder:The acidity coefficient of the mixing slag of blast furnace cinder 80%~100%, metallurgical waste additives 0%~20%, blast furnace cinder and metallurgical waste additives is 0.94~1.5.The metallurgical waste additives use magnetic separation iron tailings or flotation iron tailings, SiO2+Al2O3>=70wt%.A kind of mineral wool produced using metallurgical waste and blast furnace cinder of the present invention and its production method, overcome the shortcomings of the prior art, it avoids using resources such as coke, silicas, the problems such as fundamentally solving big mineral wool production process pollution, high energy consumption, comprehensively utilize the existing waste material of smelter, mineral wool production cost is substantially reduced, while reduces the processing disposal costs of iron tailings the like waste resource.

Description

A kind of mineral wool produced using metallurgical waste and blast furnace cinder and its production method
Technical field
The present invention relates to mineral wool technical fields, and in particular to a kind of slag produced using metallurgical waste and blast furnace cinder Cotton and its production method.
Background technology
Molten blast furnace slag is one of principal by product of blast furnace.In general, molten blast furnace slag per ton contain (126~188) × The sensible heat of 104kJ is equivalent to the energy of 30~40kg heavy oil, and it has higher temperature, about 1450~1600 DEG C, belongs to There is the residual heat resources of high-quality very high recycling to be worth.
Domestic at present mainly to produce mineral wool using soaring oven process, this method is adopted using cold conditions blast furnace slag as raw material after fusing The staple shape inorfil made of the techniques such as supercentrifugal process or blowing process, it has, and light, thermal conductivity factor is small, do not burn, Mothproof, inexpensive, corrosion-resistant, the features such as chemical stability is good, sound absorbing performance is good, thus filling in building is adiabatic, sound absorption, every The a large amount of application of sound, oxygenerator and freezer cold insulation and the filling thermal insulation of various heat power equipments etc..
Existing mineral wool production technology majority is equipped with silica, dolomite, profound using slow cooling bulk blast-furnace cinder as raw material Wu Yan etc. adjusts acidity coefficient as auxiliary material, then with addition of melting, mixing well in furnace cupola after a certain amount of coke, then using four Roller centrifuge system produces mineral wool.The major defect of the technique is:1) energy such as a large amount of coke, coal must be consumed, it is per ton Mineral wool about needs the fuel such as 0.6~0.7 ton of coke, and dust pollution is serious after burning, and cost is bright if smoke processing system is equipped with Aobvious raising;2) must be using slow cooling blast-furnace cinder as raw material, and existing large iron and steel enterprise blast furnace is Water ramjet+, blast furnace slag All becoming being granulated Water Quenching Slag, it is impossible to be used in cupola system, long-run development so that soaring furnace process blast furnace slag raw material is in short supply, And a large amount of consumption of the natural resources such as silica, environmental disruption is also resulted in, increases production cost;It 3) must be by cold conditions blast furnace slag Remelting consumes mass energy, and a large amount of sensible heats of blast furnace cinder are not utilized, and energy waste is serious.
There are also special with metallurgical waste and the relevant patent of blast furnace cinder production mineral wool and document, such as China both at home and abroad Profit application No. is 201410663284.2, it is entitled《The method and device of mill tailings production mineral wool is equipped with melt blast-furnace cinder》 Patent of invention, particular content is:Using melt blast-furnace cinder as raw material, using mill tailings as adjusting material, using two-stage electric furnace Heating, and nitrogen injection system is set in furnace bottom, through be finely homogenized it is quenched after molten slurry got rid of by centrifuge 3~5 microns of ore deposit Cotton filament obtains mineral wool product after cotton collecting machine is collected.The invention has the following problems:First, it only states using mill tailings to be attached Add agent, raw water physicochemical property of grading is not known, will be to life if tailing granularity is excessively thick, moisture is excessively high, chemical composition is unreasonable The blast furnace slag smelting process of production mineral wool has a significant effect, and product quality will be caused to reduce, and production cost rises or even causes quick-fried Fried accident;Second is that melt temperature rapid decrease will be made to melt nitrogen-blow in melting furnace, heated by electrodes is required supplementation with, waste is big Measure the energy.
For another example Chinese Patent Application No. for 201310055394.6, it is entitled《A kind of Steel hot molten slag mineral wool and its preparation Method》, particular content is:Thermal-state blast furnace slag is introduced directly into the fritting zone of skull melting furnace by slag chute, quenched material with it is hot Blast furnace slag is synchronized together in the fritting zone for entering skull melting furnace, and the melt temperature in fritting zone is maintained at 1400~1500 DEG C, is protected The warm time is 4~6h, and later into main molten area, the melt temperature in main molten area is maintained at 1420~1450 DEG C, soaking time for 6~ 9h later into discharge zone, is then flowed on the idler wheel of centrifuge, forms raw cotton.The invention has the following problems:Skull melting furnace includes Fritting zone and main molten area, and do not detach, if the cutout of long period occurs in blast furnace cinder, whole production procedure need to all stop Only, energy waste is serious, and production efficiency is relatively low.And fritting zone charging heating process is changeable, and main molten area heat preservation method is stablized, will It has mutually interference when being placed in same electric furnace, and power consumption is caused to increase, and production cost is higher, and actual production is using less, practicality Property is poor.Control system
Therefore, there are expense of raw materials is high, energy consumption is big, seriously polluted, power consumption for mineral wool production technology in the prior art The problems such as high urgent need to resolve.
Invention content
The purpose of the present invention is to provide a kind of mineral wools and its producer produced using metallurgical waste and blast furnace cinder Method overcomes the shortcomings of the prior art, avoids, using resources such as coke, silicas, fundamentally solving mineral wool production process The problems such as pollution is big, high energy consumption comprehensively utilizes the existing waste material of smelter, hence it is evident that reduces mineral wool production cost, together When reduce iron tailings the like waste resource processing disposal costs.
In order to achieve the above object, the present invention is realized using following technical scheme:
A kind of mineral wool produced using metallurgical waste and blast furnace cinder, the mineral wool is given up by blast furnace cinder and metallurgy Material additives are formulated by following weight percent:Blast furnace cinder 80%~100%, metallurgical waste additives 0~20% are high The acidity coefficient of the mixing slag of stove slag and metallurgical waste additives is 0.94~1.5.
The metallurgical waste additives use magnetic separation iron tailings or flotation iron tailings, SiO2+Al2O3>=70wt%.
The weight percent content of TFe is less than 22% in the magnetic separation iron tailings or flotation iron tailings.
Weight percentage >=95% of the metallurgical waste additives granularity below 100 mesh.
The weight percent content of S is less than 1.2% in the metallurgical waste additives.
Weight percent≤0.5% of water content in the metallurgical waste additives.
A kind of production method of mineral wool produced using metallurgical waste and blast furnace cinder, is included the following steps:
1) extraction of blast furnace cinder:It is drawn from blast furnace platform slag runner by blast furnace cinder, ensures blast furnace cinder in spill process Temperature and mobility, it is made to flow directly out in the electric furnace to outside platform, receives blast furnace cinder temperature >=1250 DEG C in electric furnace;
2) melt preheats:Blast furnace cinder is heated to 1340~1480 DEG C using electric furnace heating system, makes viscosity≤1Pa S, to ensure the mobility of blast furnace cinder;
3) preparation of blend melt:Metallurgical waste additives are added in blast furnace cinder, continue to heat, and pass through electromagnetic force Effect realize blend melt temperature promoted and mixing;Then blend melt is sent to heat preservation by electric furnace lower part head piece Stove makes blend melt complete homogenization and clarification in holding furnace;Blend melt final temperature is 1320~1400 DEG C, and viscosity is 1~3PaS;
4) mineral wool wire drawing:Blend melt in holding furnace is drained to cotton system processed, fiber is made by four-roller centrifuge The mineral wool of average diameter≤7 μm.
Compared with prior art, the beneficial effects of the invention are as follows:
1) using blast furnace cinder as base stock, and electric furnace is directly entered after being drained by blast furnace residue channel, high temperature Heat-energy losses are few, and the thermal energy is made full use of to produce mineral wool, blast furnace cinder waste heat can be utilized to greatest extent, physical thermal is converted into Chemical heat has saved the energy such as a large amount of coke compared with prior art;
2) using iron tailings as additives source, the pretreating process such as processing crushing are not required to, fully utilize a variety of wastes moneys Mineral wool product is all produced in source with iron and steel enterprise's waste, and production cost is substantially reduced, and it is discarded to have saved a large amount of iron tailings etc. The processing disposal costs of object.Therefore, the present invention has significant economic benefit and environmental benefit, in industry especially metallurgical enterprise Industry directly has apparent economic benefit using blast furnace cinder production mineral wool field and promotes practical value.
Specific embodiment
The specific embodiment of the present invention is described further below:
A kind of mineral wool produced using metallurgical waste and blast furnace cinder, the mineral wool is given up by blast furnace cinder and metallurgy Material additives are formulated by following weight percent:Blast furnace cinder 80%~100%, metallurgical waste additives 0~20% are high The acidity coefficient of the mixing slag of stove slag and metallurgical waste additives is 0.94~1.5.
The metallurgical waste additives use magnetic separation iron tailings or flotation iron tailings, SiO2+Al2O3>=70wt%.
The weight percent content of TFe is less than 22% in the magnetic separation iron tailings or flotation iron tailings.General iron tailings Itself granularity can be met the requirements, and be processed without processes such as mechanical grindings.
Weight percentage >=95% of the metallurgical waste additives granularity below 100 mesh.When iron content is higher Rock wool product quality is not only influenced, while a large amount of molten iron will be generated to need to discharge, influence production process arrangement, production efficiency drop It is low.
The weight percent content of S is less than 1.2% in the metallurgical waste additives.S too high levels will seriously affect The stability of rock wool.
Weight percent≤0.5% of water content in the metallurgical waste additives.Water content is excessively high to easily lead to explosion thing Therefore occur, and easily increase [H] of rock wool product, influence product quality.
According to blast furnace cinder, adjunct ingredients and acidity coefficient Mk=(WSiO2+WAl2O3)/(WCaO+WMgO), (wherein W is matter Amount) component ratio for mixing slag is adjusted, it is 0.94~1.5 to make its acidity coefficient.When additives additive amount is higher, power consumption rises Significantly, production cost will be made significantly to increase.
A kind of production method of mineral wool produced using metallurgical waste and blast furnace cinder, is included the following steps:
1) extraction of blast furnace cinder:It is drawn from blast furnace platform slag runner by blast furnace cinder, ensures blast furnace cinder in spill process Temperature and mobility, it is made to flow directly out in the electric furnace to outside platform, receives blast furnace cinder temperature >=1250 DEG C in electric furnace.
2) melt preheats:Blast furnace cinder is heated to 1340~1480 DEG C using electric furnace heating system, makes viscosity≤1Pa S, to ensure the mobility of blast furnace cinder.It is made to have the condition of the quick fusion and homogenization for realizing melt and additives.
3) preparation of blend melt:Metallurgical waste additives are added in blast furnace cinder, continue to heat, and pass through electromagnetic force Effect realize blend melt temperature promoted and mixing;Then blend melt is sent to heat preservation by electric furnace lower part head piece Stove makes blend melt complete homogenization and clarification in holding furnace;Blend melt final temperature is 1320~1400 DEG C, and viscosity is 1~3PaS.
It is primary by outlet at bottom discharge molten iron every 1~2 month in electric furnace production process.Molten iron is derived from additives Iron oxide and the iron after the carbon reduction in electrode, if not discharging it, will cause to corrode and wash away to slag fire resisting material of furnace body, Influence the electric furnace service life.
4) mineral wool wire drawing:Blend melt in holding furnace is drained to cotton system processed, fiber is made by four-roller centrifuge The mineral wool of average diameter≤7 μm.
Rock can be sprayed on during into cotton using misty dust laying oil and as the Water-soluble thermosetting phenolic resin of binding agent On staple.The products such as mineral wool board, mineral wool felt, mineral wool pipe are obtained after mineral wool machine-shaping.
Embodiment 1:
Granularity is accounted for 96% by a kind of method using metallurgical waste and blast furnace cinder production mineral wool for 80 mesh of < first Flotation iron tailings be dried to moisture as 0.40% spare, SiO2+Al2O3=73wt%;Then by blast furnace cinder from blast furnace It draws, is kept the temperature by electric heating system, it is made to flow directly into hot plate, 1260 DEG C of blast furnace cinder during inflow, Ran Houtong It crosses after arc heating system is warming up to 1460 DEG C and promotes electrode, then ready iron tailings is disposably added in, blast furnace melts Slag is 92 with iron tailings proportioning:8, acidity coefficient 1.1 then proceedes to that mixing slag is carried out to be warming up to 1460 DEG C, and heat preservation is equal After changing 2.5h, mixing slag is discharged by lower part slag tap in holding furnace, continues uniform depth and clear in holding furnace Clear 4h, temperature are 1330 DEG C, viscosity 2.3PaS, and mixing slag then is drained to four-roller centrifuge treating by head piece carries out Cotton processed, while dust laying oil and binding agent are incorporated, then be collected by equipment such as cotton collecting machines by spraying colloid system, obtain mineral wool Finished product, finished fiber average diameter are 5.1 μm.Periodically the remaining molten iron in electric furnace is discharged simultaneously.
Embodiment 2:
Granularity is accounted for 95% by a kind of method using metallurgical waste and blast furnace cinder production mineral wool for 100 mesh of < first Magnetic separation iron tailings be dried to moisture as 0.45% spare, SiO2+Al2O3=71wt%;Then by blast furnace cinder from height Stove is drawn, and is kept the temperature by electric heating system, it is made to flow directly into hot plate, 1255 DEG C of blast furnace cinder during inflow, then It is warming up to after 1450 DEG C by arc heating system and promotes electrode, then ready iron tailings is disposably added in, blast furnace Slag is 85 with iron tailings proportioning:15, acidity coefficient 1.20 then proceedes to that mixing slag is carried out to be warming up to 1450 DEG C, heat preservation Be homogenized 2.3h after, will mixing slag be discharged into holding furnace by lower part slag tap, holding furnace continue uniform depthization and 4.6h is clarified, temperature is 1350 DEG C, viscosity 2.0PaS, and mixing slag then is drained to four-roller centrifuge treating by head piece Cotton processed is carried out, while dust laying oil and binding agent are incorporated, then be collected by equipment such as cotton collecting machines by spraying colloid system, obtains ore deposit Slag wool finished product, finished fiber average diameter are 4.5 μm.Periodically the remaining molten iron in electric furnace is discharged simultaneously.

Claims (7)

1. a kind of mineral wool produced using metallurgical waste and blast furnace cinder, which is characterized in that the mineral wool is melted by blast furnace Slag and metallurgical waste additives are formulated by following weight percent:Blast furnace cinder 80%~100%, metallurgical waste additives 0~20%, the acidity coefficient of the mixing slag of blast furnace cinder and metallurgical waste additives is 0.94~1.5.
A kind of 2. mineral wool produced using metallurgical waste and blast furnace cinder according to claim 1, which is characterized in that institute Metallurgical waste additives are stated using iron selection tailings, SiO2+Al2O3>=70wt%.
3. a kind of mineral wool produced using metallurgical waste and blast furnace cinder according to claim 1 or 2, feature are existed In the weight percent content of TFe is less than 22% in the metallurgical waste additives.
4. a kind of mineral wool produced using metallurgical waste and blast furnace cinder according to claim 1 or 2, feature are existed In weight percentage >=95% of the metallurgical waste additives granularity below 100 mesh.
5. a kind of mineral wool produced using metallurgical waste and blast furnace cinder according to claim 1 or 2, feature are existed In the weight percent content of S is less than 1.2% in the metallurgical waste additives.
6. a kind of mineral wool produced using metallurgical waste and blast furnace cinder according to claim 1 or 2, feature are existed In weight percent≤0.5% of water content in the metallurgical waste additives.
7. a kind of production method of mineral wool as described in claim 1 produced using metallurgical waste and blast furnace cinder, special Sign is, includes the following steps:
1) extraction of blast furnace cinder:It is drawn from blast furnace platform slag runner by blast furnace cinder, ensures the temperature of blast furnace cinder in spill process Degree and mobility, make it flow directly out in the electric furnace to outside platform, receive blast furnace cinder temperature >=1250 DEG C in electric furnace;
2) melt preheats:Blast furnace cinder is heated to 1340~1480 DEG C using electric furnace heating system, makes viscosity≤1PaS, with Ensure the mobility of blast furnace cinder;
3) preparation of blend melt:Metallurgical waste additives are added in blast furnace cinder, continue to heat, and pass through the work of electromagnetic force With the temperature promotion and mixing for realizing blend melt;Then blend melt is sent to holding furnace by electric furnace lower part head piece, Blend melt is made to complete homogenization and clarification in holding furnace;Blend melt final temperature is 1320~1400 DEG C, viscosity for 1~ 3Pa·S;
4) mineral wool wire drawing:Blend melt in holding furnace is drained to cotton system processed, fiber, which is made, by four-roller centrifuge is averaged The mineral wool of diameter≤7 μm.
CN201711307428.0A 2017-12-11 2017-12-11 A kind of mineral wool produced using metallurgical waste and blast furnace cinder and its production method Pending CN108129031A (en)

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Publication number Priority date Publication date Assignee Title
CN110746118A (en) * 2019-10-18 2020-02-04 酒泉钢铁(集团)有限责任公司 Comprehensive utilization method of fly ash based on mineral wool tempering
CN112941324A (en) * 2021-01-28 2021-06-11 赵江晨 Novel process for comprehensively utilizing resources containing heavy metal hazardous wastes

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CN110746118A (en) * 2019-10-18 2020-02-04 酒泉钢铁(集团)有限责任公司 Comprehensive utilization method of fly ash based on mineral wool tempering
CN112941324A (en) * 2021-01-28 2021-06-11 赵江晨 Novel process for comprehensively utilizing resources containing heavy metal hazardous wastes

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Application publication date: 20180608