CN110372197A - A method of it obtaining ferroalloy smelting waste residue and produces minimum end of melting temperature during qualified mineral wool - Google Patents
A method of it obtaining ferroalloy smelting waste residue and produces minimum end of melting temperature during qualified mineral wool Download PDFInfo
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- CN110372197A CN110372197A CN201910797450.0A CN201910797450A CN110372197A CN 110372197 A CN110372197 A CN 110372197A CN 201910797450 A CN201910797450 A CN 201910797450A CN 110372197 A CN110372197 A CN 110372197A
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- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B37/00—Manufacture or treatment of flakes, fibres, or filaments from softened glass, minerals, or slags
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P40/00—Technologies relating to the processing of minerals
- Y02P40/50—Glass production, e.g. reusing waste heat during processing or shaping
- Y02P40/57—Improving the yield, e-g- reduction of reject rates
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Abstract
The present invention relates to a kind of methods that acquisition ferroalloy smelting waste residue produces minimum end of melting temperature during qualified mineral wool.The present invention obtains T firsta、TbBoth, then compare, take the larger value T in the twoGreatlyAs the benchmark of next step operation, Tc is then obtained by once experiment；Then the optimal compensation temperature is found by experiment+alternative manner；According to TGreatly+ Tc+ the optimal compensation temperature computation goes out to produce minimum end of melting temperature during qualification mineral wool；Can its minimum end of melting temperature then verified again produce qualified mineral wool；If it could not, improving the resulting the optimal compensation temperature of back again carries out confirmatory experiment, until obtaining qualified mineral wool, its corresponding compensation temperature is the optimal compensation temperature at this time.The minimum end of melting temperature during obtaining the qualified mineral wool of production of science of the invention, the loss saved the energy consumption of melting process, reduced electric furnace refractory material improve the production efficiency of mineral wool.
Description
Technical field
The present invention relates to minimum end of melting temperature during a kind of qualified mineral wool of acquisition ferroalloy smelting waste residue production
Method；Belong to metallurgical slag resource utilization field.
Background technique
Mineral wool has the excellent performances such as heat preservation, heat-insulated and sound insulation, is widely used in the every field of national economy.
Natural rock and metallurgical slag can produce mineral wool.Due to a large amount of generations of metallurgical slag and becoming larger for environmental protection pressure, provide
Sourceization using metallurgical slag production mineral wool it is more and more concerned, wherein ferroalloy smelting waste residue because its yield it is big, can be got well at woolliness
In order to produce the quality raw materials of mineral wool.
The difference of the manufacturing process of mineral wool proportionately fine mode is divided into centrifugal process and blowing process.Centrifugal process high production efficiency,
The advantages that good product quality, is commonly used in the industrial production, and blowing process is mainly used for experimental study and small-scale production.
It is as follows that the specific production technology of mineral wool, which can simplify: the quenched and melting of 1. raw materials；2. centrifugal process or blowing process are at fibre；3
The collection of cellucotton；The subsequent technique of 4 products preparation.No matter which kind of process and raw material, slag be completely melt all be must
Need process.Raw material is heated to molten condition huge energy consumption, while the temperature of molten state is higher, and energy consumption is bigger, the loss of resistance to material etc.
Also bigger.
The quenched of raw material and melting mainly are carried out with electric arc furnaces in mineral wool production at present.The principle of heating of electric furnace is to utilize
Graphite electrode and consumption electric energy carry out electric arc heated, and compared to traditional shaft furnace fused raw material, heating efficiency is higher, carbon dioxide
Discharge is less.In practical mineral wool production process, slag raw material be initially introduced into electric furnace heat up it is quenched, while in order to guarantee
Production process is smooth, and final warming temperature, that is, terminal melting temperature of slag raw material will generally be much higher than the melting temperature of slag and melt
Point.How much higher than melting temperature as terminal melting temperature, none accurate method of science is general real by industry
It tramples to obtain empirical value.The cost of electric furnace fused raw material mostlys come from power consumption, fire resisting material of furnace body loss and graphite electrode material and disappears
Consumption.However all costs all have direct relationship with the terminal melting temperature of raw material, terminal melting temperature is higher, when melting
Between it is longer, power consumption is bigger, slag is also more serious to the erosion of resistance to material and electrode.
Therefore slag raw material during ferroalloy slag production mineral wool can scientific, accurately be determined by being badly in need of inventing a kind of method
Terminal melting temperature enables ferroalloy slag mineral wool that obtains of high-quality and high-efficiency under alap terminal melting temperature to produce
Product.This has major and immediate significance to production, high efficiency manufacture and the green manufacturing of instructing mineral wool.
Summary of the invention
In view of the problems of the existing technology the present invention, provides a kind of qualified mineral wool of acquisition ferroalloy smelting waste residue production
The method of minimum end of melting temperature in the process.
Melting outlet temperature is carried out using the method for the present invention to determine, can accurately control the terminal melting of ferroalloy slag charge
Temperature greatly promotes smelting efficiency, saves melting power consumption and saves the loss of refractory material.The method of the present invention uses simultaneously
Detecting instrument is common, easy to operate, method applicability is strong, and the data obtained is precisely scientific.
In order to reach above-mentioned technical purpose terminal melting temperature, a kind of determining ferroalloy smelting waste residue of the present invention produces slag
The method of cotton end of melting temperature, used instrument and equipment have: 1 heated filament equipment, 2 viscosity of high-temperature melt testers, 3 infrared surveys
Temperature probe；Measurement of the heated filament equipment for ferroalloy slag molten temperature region (starts fusion temperature Ti, it is completely melt temperature Ta),
Viscosity apparatus is used for ferroalloy slag melting temperature TbDetermination, infrared temperature probe be used for differential temperature TcMeasurement (ferroalloy slag
Slag temperature T in electric furnacedAt fine temperature T when reaching Centrifugal rolling or blowing mouth with slagxDifference, i.e. Tc=Td-Tx)；?
To after above-mentioned temperature data, it is contemplated that compensation temperature, by the iteration of compensation temperature and the cooperation of experiment, finally obtaining be can guarantee
The minimum terminal melting temperature of qualified products can be produced.
A kind of side for obtaining ferroalloy smelting waste residue and producing minimum end of melting temperature during qualified mineral wool of the present invention
Method；Obtain ferroalloy smelting waste residue is completely melt temperature Ta, obtain ferroalloy smelting waste residue melting temperature Tb,
For with a batch of ferroalloy smelting raw slag material, carrying out electric in-furnace slag temperature T at least oncedWith at fine temperature
Spend TeTest, utilize Td-Te=Tc, T is calculatedc；For repeatedly being surveyed with a batch of ferroalloy smelting raw slag material
When examination, TdFor the average value repeatedly tested, TeIt also is the average value repeatedly tested, the TdMore than or equal to Ta+ 200 DEG C, and TdGreatly
In equal to Tb+200℃；The quality for detecting gained mineral wool by national standard GB/T11835-2016 simultaneously, if up-to-standard；Under then
State step progress；If unqualified, T is adjustedd, until the up-to-standard and progress in the steps below of gained mineral wool:
Define TGreatlyFor Ta、TbHigher temperature in the two；
First time theoretical calculation end of melting temperature Tf1For melting temperature TGreatlyIn addition differential temperature Tc, along with compensation temperature
Spend Tg1, i.e. Tf1=TGreatly+Tc+Tg1(1)；T at this timeg1For the temperature for being arbitrarily greater than 0 degree Celsius；Then operation is in two kinds of situation:
Situation one:
The ferroalloy smelting raw slag material of same batch is taken to be heated to Tf1At a temperature of, production mineral wool is carried out, and press national standard GB/
The quality of T11835-2016 detection gained mineral wool, if up-to-standard；Then further it is lower than T using oneg1Compensation temperature
Tg2Instead of Tg1It substitutes into formula (1) and carries out that a temperature T is calculated and determinedf2；Then the ferroalloy smelting waste residue of same batch is taken again
Raw material is heated to Tf2At a temperature of, production mineral wool is carried out, and the quality of gained mineral wool is detected by national standard GB/T11835-2016,
If up-to-standard；Then further it is lower than T using oneg2Compensation temperature Tg3Instead of Tg2It substitutes into formula (1) and is calculated simultaneously
Determine a temperature Tf3；Repetitive operation, until compensation temperature is TgiWhen, products obtained therefrom it is off quality, then in TgiExtremely
Tgi-1Temperature range in, choice experiment temperature from low to high；Until obtaining qualified products, the compensation temperature of qualified products is obtained
It is at this time Tgi+n, as the optimal compensation temperature；Then formula (1) becomes T at this timef=TGreatly+Tc+Tgi+n；The i is more than or equal to 2, institute
N is stated more than or equal to 1；
If in Tf2At a temperature of, production mineral wool is carried out, and detect gained mineral wool by national standard GB/T11835-2016
Quality, if off quality；Then in Tf1With Tf2Between choice experiment temperature from low to high；Until obtaining qualified products, obtain
The compensation temperature of qualified products is T at this timeg2+n；As the optimal compensation temperature；Then formula (1) becomes T at this timef=TGreatly+Tc+Tg2+n；
The n is more than or equal to 1；
Situation two:
The ferroalloy smelting raw slag material of same batch is taken to be heated to Tf1At a temperature of, production mineral wool is carried out, and press national standard GB/
The quality of T11835-2016 detection gained mineral wool, if off quality；Then further it is higher than T using oneg1Compensation temperature
Spend Tg2Instead of Tg1It substitutes into formula (1) and carries out that a temperature T is calculated and determinedf2；And in Tf2At a temperature of, production mineral wool is carried out,
And the quality of gained mineral wool is detected by national standard GB/T11835-2016, if up-to-standard；Then in Tf1With Tf2Between from as low as
High selection experimental temperature；Until obtaining qualified products, the compensation temperature for obtaining qualified products is T at this timeg2+n；As the optimal compensation
Temperature；Then formula (1) becomes T at this timef=TGreatly+Tc+Tg2+n；The n is more than or equal to 1；
If in Tf2At a temperature of, production mineral wool is carried out, and detect gained mineral wool by national standard GB/T11835-2016
Quality, if off quality；Then further it is higher than T using oneg2Compensation temperature Tg3Instead of Tg2Substitute into formula (1) in into
A temperature T is calculated and determined in rowf3；And in Tf3At a temperature of, production mineral wool is carried out, and examine by national standard GB/T11835-2016
The quality for surveying gained mineral wool, if up-to-standard；Then in Tf2With Tf3Between choice experiment temperature from low to high；Until obtaining
Qualified products, the compensation temperature for obtaining qualified products is T at this timeg3+n；As the optimal compensation temperature；Then formula (1) becomes T at this timef
=TGreatly+Tc+Tg3+n；The n is more than or equal to 1；If TfiAt a temperature of, production mineral wool is carried out, and press national standard GB/T11835-
The quality of 2016 detection gained mineral wools, if off quality；Compensation temperature is then continued to lift up until products obtained therefrom is qualified；This
When compensation temperature temperature be Tgi；Then in TGi withTgi-1In the section constituted, low to high choice experiment temperature；Until being closed
Lattice product, the compensation temperature for obtaining qualified products is T at this timegi+n, as the optimal compensation temperature；Then formula (1) becomes T at this timef=
TGreatly+Tc+Tgi+n；The i is more than or equal to 3, and the n is more than or equal to 1.
A kind of side for obtaining ferroalloy smelting waste residue and producing minimum end of melting temperature during qualified mineral wool of the present invention
Method, with heated filament measuring apparatus ferroalloy slag molten temperature region, the ferroalloy slag molten temperature region is ferroalloy slag fusing
Initial temperature is to being completely melt temperature；It is described that there is real time imagery and temperature measurement function using heated filament equipment.Determine ferroalloy
The beginning fusion temperature of slag and it is completely melt temperature.This method is not constrained by heated filament device model.
A kind of side for obtaining ferroalloy smelting waste residue and producing minimum end of melting temperature during qualified mineral wool of the present invention
Method, using the Temperature-viscosity curves of viscosity coefficient of dross analyzer measurement ferroalloy smelting waste residue, and according to Temperature-viscosity curves meter
Calculation obtains ferroalloy smelting waste residue melting temperature.
A kind of side for obtaining ferroalloy smelting waste residue and producing minimum end of melting temperature during qualified mineral wool of the present invention
Method, on the Temperature-viscosity curves of gained ferroalloy smelting waste residue, the tangent line and Temperature-viscosity curves of 135 ° of work are tangent, point of contact
Temperature is corresponding melting temperature Tb。
A kind of side for obtaining ferroalloy smelting waste residue and producing minimum end of melting temperature during qualified mineral wool of the present invention
Method, the ferroalloy smelting waste residue is selected from the waste residue that manganese alloy smelting process generates, dilval smelting process generate it is useless
One of slag, blast furnace slag.
A kind of side for obtaining ferroalloy smelting waste residue and producing minimum end of melting temperature during qualified mineral wool of the present invention
Method, the ferroalloy slag molten temperature region, which determines, (starts fusion temperature Ti, it is completely melt temperature Ta), concrete operations are as follows: open
Beginning fusion temperature TiStart to generate moment corresponding temperature for ferroalloy slag liquid phase in heated filament, is completely melt temperature TaFor ferroalloy
Slag is entirely liquid phase moment corresponding temperature.
T in the present inventiona、TbIt can be obtained by lab scale.
A kind of side for obtaining ferroalloy smelting waste residue and producing minimum end of melting temperature during qualified mineral wool of the present invention
Method, the differential temperature TcDetermination, concrete operations are as follows: ferroalloy slag melting holding temperature and infrared probe measure the difference of temperature
Value.In the present invention, T is obtained through one-shot measurementcAfterwards, that is, think TcFor definite value.Because in application, the model of equipment in factory
And relative position is completely fixed, although the holding temperature in melting insulating process has certain difference, is drained
When on to roller or at nozzle, the amplitude of variation of temperature drop is generally little.Minimum end of melting temperature is quickly obtained in order to reduce,
In the present invention, it is construed as definite value.
The present invention obtains be completely melt temperature T firsta, obtain ferroalloy smelting waste residue melting temperature Tb, then compare two
Person takes the larger value T in the twoGreatlyAs the benchmark of next step operation, T is then obtained by once experimentc；Then pass through experiment
+ alternative manner finds the optimal compensation temperature；According to TGreatly+Tc+ the optimal compensation temperature computation goes out to produce qualified mineral wool in the process most
Low melt outlet temperature；Can its minimum end of melting temperature then verified again produce qualified mineral wool；If it could not, again
The resulting the optimal compensation temperature of raising back carries out confirmatory experiment, the mineral wool up to obtaining qualification, at this time its corresponding benefit
Repaying temperature is the optimal compensation temperature.
Principle and advantage
Inventive principle:
Consider that the ferroalloy slag temperature in electric furnace is not that the higher the better for power consumption, the loss of resistance to material and production efficiency.Phase
Instead, under the premise of guaranteeing the production of mineral wool quality, lower terminal melting temperature more can guarantee the economy of production process.
The present invention determines the numbers such as fusion temperature and the melting temperature of slag using heated filament equipment and viscosity equipment science, accurately
According to；Simultaneously using preliminary experiment early period determine electric in-furnace slag temperature and Centrifugal rolling or air-flow ejiction opening region at fine temperature it
Between temperature gap；The optimal compensation temperature finally is found using alternative manner, and has shown that calculating minimum production mineral wool melts
The calculation method and formula of temperature.The method can science, the accurately qualified mineral wool mistake of acquisition ferroalloy smelting waste residue production
Minimum end of melting temperature in journey, not only ensure that the high quality of production of mineral wool in this way, but can reduce production process energy consumption and
Cost.
Advantage of the invention:
1. obtaining accurately slag basal temperature data.Using equipment such as heated filament equipment, viscosity equipment and preliminary experiments and
Method obtains the slag temperature number on the basis such as the fusion temperature of slag, melting temperature and differential temperature present on technique
According to.
2. establishing the calculation method and formula of minimum production mineral wool melting temperature.It is sought using the methodological science of iteration
Have found the optimal compensation temperature, and by comprehensive analysis obtained calculating minimum production mineral wool melting temperature calculation method and
Formula.
3. saving power consumption, reducing resistance to material and export license.The loss of power consumption, resistance to material and electrode depends primarily on ferroalloy slag
Temperature and electric furnace runing time, accurate terminal melting temperature can make temperature low as far as possible, reduce smelting time, reduce
Erosion of the high-temperature slag to resistance to material.
Detailed description of the invention
Fig. 1 is that blowing process produces mineral wool schematic diagram in the embodiment of the present invention 1 and 2；
Fig. 2 is that the heated filament equipment of the embodiment of the present invention 1 and 2 measures ferronickel slag molten temperature region；
Fig. 3 is that the viscosity equipment of the embodiment of the present invention 1 and 2 measures ferronickel slag melting temperature
Fig. 4 is that centrifuging process produces mineral wool schematic diagram in the embodiment of the present invention 3 and 4；
Fig. 5 is that the heated filament equipment of the embodiment of the present invention 3 and 4 measures silicon manganese slag molten temperature region；
Fig. 6 is that the viscosity equipment of the embodiment of the present invention 3 and 4 measures silicon manganese slag melting temperature
Specific embodiment
Using nickel-iron smelting waste residue and silicomanganese melting waste slag as raw material, production mineral wool is carried out with spray method and centrifugal process respectively
Experiment and production practices.The main component of ferro-nickel alloy dregs and silicon-manganese alloy slag is as shown in Table 1 and Table 2.Below schematic diagram and
The present invention will be further described for specific embodiment.
The main component of 1 ferronickel slag of table
| FeO | SiO2 | CaO | MgO | Al2O3 | Cr2O3 |
| 6.71 | 48.41 | 5.45 | 30.07 | 4.21 | 1.54 |
The main component of 2 silicon manganese slag of table
| SiO2 | Al2O3 | CaO | MnO | MgO | FeO |
| 39.83 | 18.65 | 19.97 | 8.84 | 6.51 | 1.28 |
Embodiment 1 (corresponding situation 1-1)
The implementation is directed to the case where producing mineral wool using blowing process as raw material using ferro-nickel alloy dregs, participates in attached drawing 1.①
Basal temperature measurement: it is molten that ferronickel slag is carried out respectively using heated filament equipment and viscosity of high-temperature melt instrument using nickel-iron smelting waste residue as raw material
Change the measurement of temperature range and melting temperature, the beginning fusion temperature of the slag of ferronickel as the result is shown of measurement is Ti=1346 DEG C,
It is completely melt that temperature is Ta=1509 DEG C, melting temperature Tb=1431 DEG C, referring to attached drawing 2 and 3.2. preliminary experiment measures difference
Temperature: ferronickel slag heats up in electric furnace melts to 1709 DEG C, keeps the temperature 3min, carries out down furnace and slags tap, be blown operation at cotton, is blown
Pressure is 0.55Mpa, and what infrared probe measured blowing mouth is 1628 DEG C at fine temperature, and differential temperature T is calculatedc=81 DEG C,
It is up-to-standard through detection mineral wool, therefore the differential temperature under the conditions of this batch, this apparatus and process is determined as Tc=81 DEG C.3. most
Good compensation temperature determines: setting Tg1=40 DEG C, Tf1=TGreatly+Tc+Tg1=1509+81+40=1630 DEG C, mineral wool quality is closed
Lattice；If Tg2=30 DEG C, Tf2=TGreatly+Tc+Tg2=1509+81+20=1620 DEG C, mineral wool is up-to-standard；Tg3=10 DEG C, Tf3=
TGreatly+Tc+Tg3=1509+81+10=1600 DEG C, mineral wool is off quality；In Tf2And Tf3Between choose temperature from low to high again
Test；If Tg3+1=15 DEG C, Tf=TGreatly+Tc+Tg2+1=1605 DEG C, mineral wool is off quality；If Tg3+2=20 DEG C, Tf=TGreatly+
Tc+Tg2+2=1610 DEG C, mineral wool is up-to-standard；Tg3+2=20 DEG C are the optimal compensation temperature, at this point, Tf=TGreatly+Tc+Tg3+2=
1610℃.4. embodiment volume production: for a collection of ferronickel slag raw material, calculating end of melting temperature according to formula is 1610 DEG C,
His technological parameter and process are same as above, and carry out mineral wool production, and product is up-to-standard through detecting.The quality inspection standard of mineral wool and
It is required that in accordance with national standard GB/T11835-2016.
Embodiment 2 (corresponding situation 1-2)
The implementation is directed to the case where producing mineral wool using blowing process as raw material using ferro-nickel alloy dregs, participates in attached drawing 1.①
Basal temperature measurement: it is molten that ferronickel slag is carried out respectively using heated filament equipment and viscosity of high-temperature melt instrument using nickel-iron smelting waste residue as raw material
Change the measurement of temperature range and melting temperature, the beginning fusion temperature of the slag of ferronickel as the result is shown of measurement is Ti=1346 DEG C,
It is completely melt that temperature is Ta=1509 DEG C, melting temperature Tb=1431 DEG C, referring to attached drawing 2 and 3.2. preliminary experiment measures difference
Temperature: ferronickel slag heats up in electric furnace melts to 1709 DEG C, keeps the temperature 3min, carries out down furnace and slags tap, be blown operation at cotton, is blown
Pressure is 0.55Mpa, and what infrared probe measured blowing mouth is 1628 DEG C at fine temperature, and differential temperature T is calculatedc=81 DEG C,
It is up-to-standard through detection mineral wool, therefore the differential temperature under this batch, this equipment and process conditions is determined as Tc=81 DEG C.③
The optimal compensation temperature determines: setting Tg1=40 DEG C, Tf1=TGreatly+Tc+Tg1=1509+81+40=1630 DEG C, mineral wool quality is closed
Lattice；If Tg2=10 DEG C, Tf2=TGreatly+Tc+Tg2=1509+81+10=1600 DEG C, mineral wool is off quality；In Tf1And Tf2Between by
Low to high selection temperature is tested again；If Tg2+1=15 DEG C, Tf=TGreatly+Tc+Tg2+1=1605 DEG C, mineral wool is off quality；If
Tg2+2=20 DEG C, Tf=TGreatly+Tc+Tg2+2=1610 DEG C, mineral wool is up-to-standard；Tg2+2=20 DEG C are the optimal compensation temperature, at this point,
Tf=TGreatly+Tc+Tg2+2=1610 DEG C.4. embodiment volume production: for a collection of ferronickel slag raw material, calculating end of melting according to formula
Temperature is 1610 DEG C, other technological parameters and process are same as above, and carries out mineral wool production, and product is up-to-standard through detecting.Mineral wool
Quality inspection standard and require in accordance with national standard GB/T11835-2016.
Embodiment 3 (corresponding situation 2-1)
The implementation is directed to the case where producing mineral wool using centrifuging process as raw material using silicon-manganese alloy slag, referring to attached drawing 4.①
Basal temperature measurement: it is molten that silicon manganese slag is carried out respectively using heated filament equipment and viscosity of high-temperature melt instrument using silicomanganese melting waste slag as raw material
Change the measurement of temperature range and melting temperature, the beginning fusion temperature of the silicon manganese slag as the result is shown of measurement is Ti=1220 DEG C,
It is completely melt that temperature is Ta=1345 DEG C, melting temperature Tb=1370 DEG C, referring to attached Figures 5 and 6.2. preliminary experiment measures difference
Temperature: silicon manganese slag heats up in electric furnace melts to 1570 DEG C, keeps the temperature 3min, carries out down furnace and slags tap, is centrifuged into the operation of cotton, four-roller
Revolving speed is respectively 1#2200r/min, 2#3300r/min, 3#4400r/min and 4#5800r/min, and infrared probe measures 1# centrifugation
Roller is 1506 DEG C at fine temperature, and differential temperature T is calculatedcIt is=64 DEG C, up-to-standard through detection mineral wool, therefore this batch
Differential temperature under secondary, this equipment and process conditions is determined as Tc=64 DEG C.3. the optimal compensation temperature determines: setting Tg1=10
DEG C, Tf1=TGreatly+Tc+Tg1=1370+64+10=1444 DEG C, mineral wool is off quality；If Tg2=50 DEG C, Tf2=TGreatly+Tc+Tg2
=1370+64+50=1484 DEG C, mineral wool is up-to-standard；In Tf1And Tf2Between choose temperature from low to high and test again；If Tg2+1
=15 DEG C, Tf=TGreatly+Tc+Tg2+1=1449 DEG C, mineral wool is off quality；If Tg2+2=20 DEG C, Tf=TGreatly+Tc+Tg2+2=
1454 DEG C, mineral wool is off quality；If Tg2+3=25 DEG C, Tf=TGreatly+Tc+Tg2+3=1459 DEG C, mineral wool is up-to-standard；Tg2+5
=25 DEG C are the optimal compensation temperature, at this point, Tf=TGreatly+Tc+T2+3=1459 DEG C.4. embodiment volume production: for a collection of silicon manganese slag
Raw material, calculating end of melting temperature according to formula is 1459 DEG C, other technological parameters and process are same as above, and carries out mineral wool production,
Product is up-to-standard through detecting.The quality inspection standard of mineral wool and requirement are in accordance with national standard GB/T11835-2016.
Embodiment 4 (corresponding situation 2-2)
The implementation is directed to the case where producing mineral wool using centrifuging process as raw material using silicon-manganese alloy slag, referring to attached drawing 4.①
Basal temperature measurement: it is molten that silicon manganese slag is carried out respectively using heated filament equipment and viscosity of high-temperature melt instrument using silicomanganese melting waste slag as raw material
Change the measurement of temperature range and melting temperature, the beginning fusion temperature of the silicon manganese slag as the result is shown of measurement is Ti=1220 DEG C,
It is completely melt that temperature is Ta=1345 DEG C, melting temperature Tb=1370 DEG C, referring to attached Figures 5 and 6.2. preliminary experiment measures difference
Temperature: silicon manganese slag heats up in electric furnace melts to 1570 DEG C, keeps the temperature 3min, carries out down furnace and slags tap, is centrifuged into the operation of cotton, four-roller
Revolving speed is respectively 1#2200r/min, 2#3300r/min, 3#4400r/min and 4#5800r/min, and infrared probe measures 1# centrifugation
Roller is 1506 DEG C at fine temperature, and differential temperature T is calculatedcIt is=64 DEG C, up-to-standard through detection mineral wool, therefore this batch
Differential temperature under secondary, this equipment and process conditions is determined as Tc=64 DEG C.3. the optimal compensation temperature determines: setting Tg1=10
DEG C, Tf1=TGreatly+Tc+Tg1=1370+64+10=1444 DEG C, mineral wool is off quality；If Tg2=20 DEG C, Tf2=TGreatly+Tc+Tg2
=1370+64+20=1454 DEG C, mineral wool is off quality；If Tg3=30 DEG C, Tf3=TGreatly+Tc+Tg3=1370+64+30=
1464 DEG C, mineral wool is up-to-standard；In Tf2And Tf3Between choose temperature from low to high and test again；If Tg3+1=25 DEG C, Tf=TGreatly+
Tc+Tg3+1=1459 DEG C, mineral wool is up-to-standard；Tg3+1=25 DEG C are the optimal compensation temperature, at this point, Tf=TGreatly+Tc+T3+1=
1459℃.4. embodiment volume production: for a collection of silicon manganese slag raw material, calculating end of melting temperature according to formula is 1459 DEG C,
His technological parameter and process are same as above, and carry out mineral wool production, and product is up-to-standard through detecting.The quality inspection standard of mineral wool and
It is required that in accordance with national standard GB/T11835-2016.
Claims (5)
1. a kind of method for obtaining ferroalloy smelting waste residue and producing minimum end of melting temperature during qualified mineral wool, feature
Be: obtain ferroalloy smelting waste residue is completely melt temperature Ta, obtain ferroalloy smelting waste residue melting temperature Tb,
For with a batch of ferroalloy smelting raw slag material, in order to determine electric in-furnace slag temperature TdIt is sprayed with Centrifugal rolling or air-flow
Exit region at fine temperature TeBetween temperature gap Tc, carry out electric in-furnace slag temperature T at least oncedWith at fine temperature Te
Test, utilize Td-Te=Tc, T is calculatedc；For repeatedly being tested with a batch of ferroalloy smelting raw slag material
When, TdFor the average value repeatedly tested, TeIt also is the average value repeatedly tested, the TdMore than or equal to Ta+ 200 DEG C, and TdIt is greater than
Equal to Tb+200℃；The quality for detecting gained mineral wool by national standard GB/T11835-2016 simultaneously, if up-to-standard；It is then following
Step carries out；If unqualified, T is adjustedd, until the up-to-standard and progress in the steps below of gained mineral wool:
Define TGreatlyFor Ta、TbLarger temperature in the two；
First time theoretical calculation end of melting temperature Tf1For melting temperature TGreatlyIn addition differential temperature Tc, add compensation temperature
Tg1, i.e. Tf1=TGreatly+Tc+Tg1(1)；T at this timeg1For the temperature for being arbitrarily greater than 0 degree Celsius；Then operation is in two kinds of situation:
Situation one:
The ferroalloy smelting raw slag material of same batch is taken to be heated to Tf1At a temperature of, production mineral wool is carried out, and press national standard GB/
The quality of T11835-2016 detection gained mineral wool, if up-to-standard；Then further it is lower than T using oneg1Compensation temperature
Tg2Instead of Tg1It substitutes into formula (1) and carries out that a temperature T is calculated and determinedf2；Then the ferroalloy smelting waste residue of same batch is taken again
Raw material is heated to Tf2At a temperature of, production mineral wool is carried out, and the quality of gained mineral wool is detected by national standard GB/T11835-2016,
If up-to-standard；Then further it is lower than T using oneg2Compensation temperature Tg3Instead of Tg2It substitutes into formula (1) and is calculated simultaneously
Determine a temperature Tf3；Repetitive operation, until compensation temperature is TgiWhen, products obtained therefrom it is off quality, then in TgiExtremely
Tgi-1Temperature range in, choice experiment temperature from low to high；Until obtaining qualified products, the compensation temperature of qualified products is obtained
It is at this time Tgi+n, as the optimal compensation temperature；Then formula (1) becomes T at this timef=TGreatly+Tc+Tgi+n；The i is more than or equal to 2, institute
N is stated more than or equal to 1；
If in Tf2At a temperature of, production mineral wool is carried out, and the quality of gained mineral wool is detected by national standard GB/T11835-2016,
If off quality；Then in Tf1With Tf2Between choice experiment temperature from low to high；Until obtaining qualified products, it is qualified to obtain
The compensation temperature of product is T at this timeg2+n；As the optimal compensation temperature；Then formula (1) becomes T at this timef=TGreatly+Tc+Tg2+n；It is described
N is more than or equal to 1；
Situation two:
The ferroalloy smelting raw slag material of same batch is taken to be heated to Tf1At a temperature of, production mineral wool is carried out, and press national standard GB/
The quality of T11835-2016 detection gained mineral wool, if off quality；Then further it is higher than T using oneg1Compensation temperature
Spend Tg2Instead of Tg1It substitutes into formula (1) and carries out that a temperature T is calculated and determinedf2；And in Tf2At a temperature of, production mineral wool is carried out,
And the quality of gained mineral wool is detected by national standard GB/T11835-2016, if up-to-standard；Then in Tf1With Tf2Between from as low as
High selection experimental temperature；Until obtaining qualified products, the compensation temperature for obtaining qualified products is T at this timeg2+n；As the optimal compensation
Temperature；Then formula (1) becomes T at this timef=TGreatly+Tc+Tg2+n；The n is more than or equal to 1；
If in Tf2At a temperature of, production mineral wool is carried out, and the quality of gained mineral wool is detected by national standard GB/T11835-2016,
If off quality；Then further it is higher than T using oneg2Compensation temperature Tg3Instead of Tg2It substitutes into formula (1) and is calculated
And determine a temperature Tf3；And in Tf3At a temperature of, production mineral wool is carried out, and by national standard GB/T11835-2016 detection gained
The quality of mineral wool, if up-to-standard；Then in Tf2With Tf3Between choice experiment temperature from low to high；Until obtaining qualified production
Product, the compensation temperature for obtaining qualified products is T at this timeg3+n；As the optimal compensation temperature；Then formula (1) becomes T at this timef=TGreatly+
Tc+Tg3+n；The n is more than or equal to 1；If TfiAt a temperature of, production mineral wool is carried out, and detect by national standard GB/T11835-2016
The quality of gained mineral wool, if off quality；Compensation temperature is then continued to lift up until products obtained therefrom is qualified；Compensation temperature at this time
Degree temperature is Tgi；Then in TgiWith Tgi-1In the section constituted, low to high choice experiment temperature；Until qualified products are obtained,
The compensation temperature for obtaining qualified products is T at this timegi+n, as the optimal compensation temperature；Then formula (1) becomes T at this timef=TGreatly+Tc+
Tgi+n；The i is more than or equal to 3, and the n is more than or equal to 1.
2. minimum melting is whole during a kind of acquisition ferroalloy smelting waste residue according to claim 1 produces qualified mineral wool
The method of point temperature, it is characterised in that: use heated filament measuring apparatus ferroalloy slag molten temperature region, the ferroalloy slag fusing temperature
Degree section is that ferroalloy slag melts initial temperature to being completely melt temperature；It is described that there is real time imagery and temperature using heated filament equipment
Measure function；It determines the beginning fusion temperature of ferroalloy slag and is completely melt temperature；This method is not constrained by heated filament device model.
3. minimum melting is whole during a kind of acquisition ferroalloy smelting waste residue according to claim 1 produces qualified mineral wool
The method of point temperature, it is characterised in that: utilize the Temperature-viscosity curves of viscosity coefficient of dross analyzer measurement ferroalloy smelting waste residue；
And ferroalloy smelting waste residue melting temperature is calculated according to Temperature-viscosity curves.
4. minimum melting is whole during a kind of acquisition ferroalloy smelting waste residue according to claim 1 produces qualified mineral wool
Point temperature method, it is characterised in that: on the Temperature-viscosity curves of gained ferroalloy smelting waste residue, make 135 ° tangent line with
Temperature-viscosity curves are tangent, and point of contact temperature is corresponding melting temperature Tb。
5. minimum melting is whole during a kind of acquisition ferroalloy smelting waste residue according to claim 1 produces qualified mineral wool
The method of point temperature, it is characterised in that: the ferroalloy smelting waste residue is selected from waste residue, the ferronickel that manganese alloy smelting process generates
Waste residue that alloy smelting process generates, one of blast furnace slag.
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| US4818290A (en) * | 1984-12-21 | 1989-04-04 | Outokumpu Oy | Method for utilizing slag from ferroalloy production |
| CN102479290A (en) * | 2010-11-30 | 2012-05-30 | 攀钢集团钢铁钒钛股份有限公司 | Method for calculating meltability temperature of slag |
| CN104407007A (en) * | 2014-12-16 | 2015-03-11 | 中南大学 | Method for determining melting temperature interval and melting behavior of metallurgical slag |
| CN106181220A (en) * | 2016-08-25 | 2016-12-07 | 中车青岛四方机车车辆股份有限公司 | Flame repairing technique after a kind of aluminum alloy welding |
| CN108996913A (en) * | 2018-09-03 | 2018-12-14 | 中南大学 | One kind is directly produced in mineral wool in ferronickel slag containing Mn oxide and is applied |
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2019
- 2019-08-27 CN CN201910797450.0A patent/CN110372197B/en active Active
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4818290A (en) * | 1984-12-21 | 1989-04-04 | Outokumpu Oy | Method for utilizing slag from ferroalloy production |
| CN102479290A (en) * | 2010-11-30 | 2012-05-30 | 攀钢集团钢铁钒钛股份有限公司 | Method for calculating meltability temperature of slag |
| CN104407007A (en) * | 2014-12-16 | 2015-03-11 | 中南大学 | Method for determining melting temperature interval and melting behavior of metallurgical slag |
| CN106181220A (en) * | 2016-08-25 | 2016-12-07 | 中车青岛四方机车车辆股份有限公司 | Flame repairing technique after a kind of aluminum alloy welding |
| CN108996913A (en) * | 2018-09-03 | 2018-12-14 | 中南大学 | One kind is directly produced in mineral wool in ferronickel slag containing Mn oxide and is applied |
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