CN103076256A - Device and method for detecting iron ore raw material - Google Patents
Device and method for detecting iron ore raw material Download PDFInfo
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- CN103076256A CN103076256A CN2012105900360A CN201210590036A CN103076256A CN 103076256 A CN103076256 A CN 103076256A CN 2012105900360 A CN2012105900360 A CN 2012105900360A CN 201210590036 A CN201210590036 A CN 201210590036A CN 103076256 A CN103076256 A CN 103076256A
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- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 title claims abstract description 46
- 229910052742 iron Inorganic materials 0.000 title claims abstract description 23
- 239000002994 raw material Substances 0.000 title claims abstract description 20
- 238000000034 method Methods 0.000 title claims abstract description 15
- 239000007789 gas Substances 0.000 claims abstract description 48
- 230000009467 reduction Effects 0.000 claims abstract description 30
- 238000001514 detection method Methods 0.000 claims abstract description 25
- 238000012360 testing method Methods 0.000 claims abstract description 13
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims abstract description 4
- 239000001301 oxygen Substances 0.000 claims abstract description 4
- 229910052760 oxygen Inorganic materials 0.000 claims abstract description 4
- 239000000523 sample Substances 0.000 claims description 77
- 238000006243 chemical reaction Methods 0.000 claims description 38
- 230000005540 biological transmission Effects 0.000 claims description 36
- 238000006722 reduction reaction Methods 0.000 claims description 30
- 239000000463 material Substances 0.000 claims description 19
- 239000004411 aluminium Substances 0.000 claims description 13
- 229910052782 aluminium Inorganic materials 0.000 claims description 13
- 230000004888 barrier function Effects 0.000 claims description 13
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 12
- 238000009529 body temperature measurement Methods 0.000 claims description 12
- 238000009413 insulation Methods 0.000 claims description 12
- 238000005259 measurement Methods 0.000 claims description 12
- 239000011261 inert gas Substances 0.000 claims description 9
- 230000004580 weight loss Effects 0.000 claims description 7
- 230000003028 elevating effect Effects 0.000 claims description 6
- 238000011946 reduction process Methods 0.000 claims description 6
- 230000008569 process Effects 0.000 claims description 5
- 238000009826 distribution Methods 0.000 claims description 4
- 230000000694 effects Effects 0.000 claims description 4
- 238000002474 experimental method Methods 0.000 claims description 4
- 238000009434 installation Methods 0.000 claims description 4
- 238000004064 recycling Methods 0.000 claims description 4
- 230000001186 cumulative effect Effects 0.000 claims description 2
- 238000005553 drilling Methods 0.000 claims description 2
- 238000010438 heat treatment Methods 0.000 claims description 2
- 238000005303 weighing Methods 0.000 abstract description 3
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 description 4
- 239000000725 suspension Substances 0.000 description 4
- 230000008901 benefit Effects 0.000 description 2
- 229910000851 Alloy steel Inorganic materials 0.000 description 1
- 229910002060 Fe-Cr-Al alloy Inorganic materials 0.000 description 1
- 238000003723 Smelting Methods 0.000 description 1
- 238000009954 braiding Methods 0.000 description 1
- UPHIPHFJVNKLMR-UHFFFAOYSA-N chromium iron Chemical compound [Cr].[Fe] UPHIPHFJVNKLMR-UHFFFAOYSA-N 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000009970 fire resistant effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
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- Investigating Or Analyzing Materials Using Thermal Means (AREA)
Abstract
The invention discloses a device and a method for detecting an iron ore raw material. The detection device replaces a suspending detection device in the prior art and comprises a vertical electrothermal furnace system, a mechanical lifting system, an electronic balance, a lifting vertical pipe system, a computer control system and a gas supply system, wherein a weighing balance is placed at the bottom of the furnace body; and the balance supports an iron ore reducing test sample through a lifting vertical pipe, measures the mass of the test sample in real time and calculates the reducing degree of the test sample according to the mass loss after reduction of the test sample and the oxygen content before reduction. The detection device for detecting according to the detection method provided by the invention has the characteristics of simple structure, low work environment temperature of the balance, high detection precision, convenience in operation and the like.
Description
Technical field
The present invention relates to ferrous material metallurgical performance detection field.More particularly, relate to pick-up unit and the method that detects for iron ore raw material.
Background technology
For the real high-efficiency cleaning utilization that realizes Metallurgical resources, at first must grasp the metallurgical performance of stove ferrous material comprehensively, wherein reductibility and free reduction swellability are the important physical property indexs of ferrous material, accurately measure above two indexs and are conducive to formulate rational iron-smelting process.
At present, the reducibility of iron ore detection mode has two kinds: a kind of is basket-hanging, be about to sample and pack in the netted hanging basket that is formed by the braiding of fire resistant iron chromium aluminium wire, vertical hanging is in the balance center that is positioned at upper of furnace body, so that hanging basket is in the high temperature furnace pipe that is connected with reducing gas again.This kind mode passes into reducing gas in the boiler tube from bottom of furnace body, because the boiler tube cross-sectional area is greater than the hanging basket cross-sectional area, reducing gas is not the complete sample that passes through.In addition, reducing gas also can form the gas edge effect, thereby cause the outside mass transfer of gas to become one of influence factor of material reduction process when through hanging basket material being reduced.Therefore, the test result that adopts this mode to obtain can not reflect ferrous material actual performance in the stove in ironmaking production exactly.
Another kind is hanging tube type, be about to material and pack in the swing pipe of being made by high-temperature alloy steel, be hung vertically in again the balance center that is positioned at upper of furnace body, so that swing pipe is in the high temperature furnace pipe, this mode is directly the bottom of reducing gas from swing pipe to be passed into, guarantee reducing gas complete pass through sample.But because swing pipe is longer, when adopting suspension type, be difficult to guarantee that swing pipe does not contact with boiler tube or heater block, in case to some extent contact, balance just can not accurately measure the accurate weightlessness of material, causes operational stability relatively poor.In addition, this mode gas just contacts with sample with current-sharing without abundant preheating in swing pipe, and the reduction process of material is also had larger impact.
What is more important: because above dual mode all adopts suspension type, balance is positioned at the top of body of heater, under hot conditions, because the heat conduction that the heat radiation that body of heater self occurs and the Fe-Cr-Al wire that is used for hanging produce, so that the temperature of weighing balance is up to upper Baidu, cause the balance-gravity faulty sensor, can't realize that Measurement accuracy very causes balance to be damaged.
Summary of the invention
Technical matters to be solved by this invention is the deficiency for above-mentioned existing pick-up unit, provide a kind of simple in structure, can use continuously, automaticity is high is used for pick-up unit and the method that iron ore raw material detects, for detection of reductibility and the free reduction swellability of iron ore raw material.
Technical scheme of the present invention is: design a kind of pick-up unit and method for the iron ore raw material detection.Described pick-up unit replaces suspension type pick-up unit of the prior art, the weighing sky is flat on bottom of furnace body, balance is propped up the iron ore reduction material by lifting vertical pipe support, and measures in real time quality of material, calculates the reduction degree of material according to the front oxygen sensor of the weight loss after the material reduction and reduction.
Pick-up unit provided by the present invention comprises vertical electrothermal furnace system, mechanical elevating system, electronic balance, lifts riser systems, computer control system, gas supply system.
Wherein, electrothermal furnace body of heater and mechanical elevating system Joint, the specimen reaction device is by placing the standpipe of lifting on the electronic balance vertically to lift in the constant temperature zone boiler tube center at electrothermal furnace middle part, the thermopair of electrothermal furnace heater and test furnace temperature all is connected to by on the computer-controlled temperature controller, lifting the thermopair and the electronic balance that are used for the measurement specimen temperature installed in the standpipe all is connected to by computer-controlled signal feedback device, gas supply system is equipped with mass-flow gas meter, and the output terminal of mass-flow gas meter is connected with the air intake opening of lifting standpipe.
In addition, the inner horizontal of lifting the position, slightly lower of riser top ends is placed with a porous barrier, and the certain thickness high aluminium ball of packing on it is nested in the specimen reaction device and lifts on the standpipe.
Also have, the specimen reaction device comprises two kinds, a kind of reductibility for detection of sample, another kind of add with behind the support of glazing bar for detection of the free reduction swellability of sample.
Lifting type iron ore raw material reductibility and free reduction swellability pick-up unit that the present invention proposes have the following advantages:
(1) the present invention utilizes lifting type to measure sample reduction weightlessness, and simple in structure, the balance operating ambient temperature is low, and accuracy of detection is high, and is easy to operate.
(2) gas is passed into by the bottom of lifting standpipe, the specimen reaction device closely is nested in lifts riser top ends, reducing gas has been passed through sufficient preheating from bottom to top in lifting standpipe, reducing gas has been passed through sufficient current-sharing in the high aluminium ball layer, then the complete sample that passes through has been avoided the impact of gas edge effect on accuracy of detection.
(3) the present invention changes the position of specimen reaction device in boiler tube by the body of heater lifting, one group detect to finish after, need not close the stove cooling and can load and unload sample and carry out next group test, can realize continued operation.
(4) the present invention both can be used for detecting the iron ore raw material reductibility also can in the specimen reaction device, add with behind the support of glazing bar for detection of the free reduction swellability of iron ore raw material.
Description of drawings
When present invention is described by reference to the accompanying drawings below, above and other advantage and disadvantage of the present invention will become clearer and be easier to and understand, wherein:
Fig. 1 is the detection iron ore raw material reductibility that proposes of the present invention and the structural representation of free reduction swellability device.
Fig. 2 is the structural representation of lifting the standpipe part among the present invention.
Fig. 3 is the left view of Fig. 2.
Fig. 4 is the structural representation of the used specimen reaction device part of test samples reductibility.
Fig. 5 is the structural representation of the used specimen reaction device part of the free reduction swellability of test samples.
Fig. 6 is the vertical view of Fig. 6 medium-height trestle.
Embodiment
The invention discloses a kind of pick-up unit and method for the iron ore raw material detection, to detect reductibility and the free reduction swellability of iron ore raw material; Compare with suspension type pick-up unit of the prior art, balance has been moved on to furnace bottom from furnace roof.
Referring to figs. 1 through Fig. 4, pick-up unit provided by the present invention comprises vertical electrothermal furnace system, mechanical elevating system, electronic balance, lifts riser systems, computer control system, gas supply system.
Shaft furnace electrothermal furnace system comprises: bell 1, furnace shell 9, binding post 10, fire resistive material 26, measurement of furnace temperature thermopair 28, boiler tube 29, heater 30, protection tube 31 and insulation cover 32; The mechanical elevating system comprises: leveling circle 5, lifting table 6, sliding sleeve 7, nut sleeve 8, column 11, leading screw 12, transmission shaft 13, motor 14, transmission gear 15, fixture 16, base 17 and electronic balance 18; Lifting riser systems comprises: specimen reaction device 2, porous barrier 4, air intake opening 19, lift standpipe 24, sample temperature measurement thermopair 25 and high aluminium ball 27; Computer control system comprises: signal feedback device 20, mass-flow gas meter 22 and temperature controller 23; Gas supply system comprises gas distribution station 21, and 3 is sample among the figure.
Wherein, bell 1 is buckled in furnace shell 9 tops, the insulation cover 32 of center drilling is housed on the top of boiler tube 29, boiler tube 29 and protection tube 31 all are fixed within the furnace shell 9, be filled with fire resistive material 26 between the furnace shell 9 of vertical heating furnace and the protection tube 31, heater 30 is enclosed within the skin of boiler tube 29, the lower end of heater 30 is furnished with binding post 10, binding post 10 is connected by electric wire with temperature controller 23 again, insert measurement of furnace temperature thermopair 28 after the perforate in the fire resistive material 26 in the furnace shell 9 at place, flat-temperature zone, body of heater middle part and shell, measurement of furnace temperature thermopair 28 is connected by compensating wire with temperature controller 23 again; Furnace shell 9 and lifting table 6 are by leveling circle 5 Joints, lifting table 6 and sliding sleeve 7 interfix, sliding sleeve 7 is enclosed within on the column 11 and can slides up and down along column 11, column 11, motor 14 all is fixed on the base 17, the transmission gear 15 that the axle of motor 14 connects is meshed with the gear that is fixed on transmission shaft 13 lower ends, transmission shaft 13 is fixed on the base 17 by fixture 16, the lower end Joint of the upper end of transmission shaft 13 and leading screw 12, the upper end of leading screw 12 is meshed with nut sleeve 8 again, nut sleeve 8 is fixed on the lifting table 6, and nut sleeve 8 drives lifting table 6 under the effect of leading screw 12 and body of heater slides up and down or fixes along column 11; Electronic balance 18 places on the base 17, electronic balance 18 links to each other with the signal feedback device 20 of computer control system by data line, lifting standpipe 24 vertically stands on the electronic balance 18, at the porous barrier 4 that is provided with horizontal positioned apart from about 40-60mm place, top of lifting standpipe 24, hole diameter is 2mm, fill the high aluminium ball 27 of diameter 3mm to the space of lifting standpipe 24 tops at porous barrier 4, used specimen reaction device 2 closely is nested in the top of lifting standpipe 24 when detecting the iron ore raw material reductibility, have equally distributed aperture on the base plate of specimen reaction device 2, hole diameter is lower than the minimum diameter of sample, specimen reaction device 2 in-built samples 3, insert sample temperature measurement thermopair 25 in the bottom perforate of lifting standpipe 24, the idol head of sample temperature measurement thermopair 25 passes the base plate of porous barrier 4 and high aluminium ball 27 and specimen reaction device 2, bury in the centre of sample 3, the lower end of sample temperature measurement thermopair 25 links to each other with signal feedback device 20 by compensating wire, be welded with air intake opening 19 in the bottom perforate of lifting standpipe 24, air intake opening 19 links to each other with the output terminal of mass-flow gas meter 22, and the input end of mass-flow gas meter 22 links to each other with gas distribution station 21 again.
When utilizing above-mentioned detection device to be used to measure the reductibility of iron ore raw material, may further comprise the steps:
A, installation detecting device also load sample 3.
After pick-up unit fixed by connected mode shown in Figure 1, throw off insulation cover 32, the transmission gear 15 that the axle of the motor 14 by forward rotation drives drives transmission shaft 13, leading screw 12, nut sleeve 8 successively, lifting table 6 is descended, thereby so that the vertical electrothermal furnace furnace shell 9 that links to each other with lifting table 6 descends, expose outside the boiler tube 29 until lift the top of standpipe 24.
B, sample 3 is heated up.
The transmission gear 15 that utilizes the axle of counter-rotational motor 14 to drive drives transmission shaft 13, leading screw 12, nut sleeve 8 successively, lifting table 6 is risen, thereby so that the vertical electrothermal furnace furnace shell 9 that links to each other with lifting table 6 rises, until specimen reaction device 2 is in the constant temperature zone of electrothermal furnace heater 30, cover insulation cover 32, by supply station 21 and mass-flow gas meter 22 inert gas is passed into through air intake opening 19 and to lift in the standpipe 24, the flow of inert gas is approximately 4L/min; After this utilize temperature controller 23, measurement of furnace temperature thermopair 28, heater 30, with the programming rate of≤10 ℃/min vertical electrothermal furnace is heated up.
C, testing process.
When being measured by sample temperature measurement thermopair 25, and reach (probe temperature is between 200 ℃～1200 ℃) behind the probe temperature that experimental program predesignates, constant temperature 30 minutes by computer-controlled signal feedback device 20 shown temperature; Then utilize reducing gas to replace indifferent gas with the same traffic of about 4L/min.Utilize real-time quality and the weight loss of electronic balance 18 and 20 continuous coverages of signal feedback device and record sample 3 in the reduction process, sample 3 no longer weightlessness be after balance shows that numerical value tends towards stability, cut off reducing gas, about flow speed with 4L/min changes logical inert gas again.
D, end experiment.
After reduction detects and finishes, the transmission gear 15 that the axle of the motor 14 of recycling forward rotation drives drives transmission shaft 13, leading screw 12, nut sleeve 8 successively, lifting table 6 is descended, thereby so that the vertical electrothermal furnace furnace shell 9 that links to each other with lifting table 6 descends, until specimen reaction device 2 places outside the boiler tube 29, take out sample 3, carry out lower group of detection.
E, reduction degree calculate.
Of poor quality before and after the sample reduction reaction, i.e. the weight loss of sample 3 in the course of reaction, the ratio of the total oxygen demand of being combined with ferro element in sample 3 just is the reduction degree of sample 3.
When utilizing above-mentioned detection device to be used to measure the free reduction swellability of iron ore raw material, may further comprise the steps:
A, sample reduction front volume are measured.
Measure the cumulative volume of sample (totally 12), in order to detecting.
B, installation detecting device also load sample 3.
After pick-up unit fixed by connected mode shown in Figure 1, throw off insulation cover 32, the transmission gear 15 that the axle of the motor 14 by forward rotation drives drives transmission shaft 13, leading screw 12, nut sleeve 8 successively, lifting table 6 is descended, thereby so that the vertical electrothermal furnace furnace shell 9 that links to each other with lifting table 6 descends, expose outside the boiler tube 29 until lift the top of standpipe 24.
C, sample heat up.
The transmission gear 15 that utilizes counter-rotational motor 14 axles to drive drives transmission shaft 13, leading screw 12, nut sleeve 8 successively, lifting table 6 is risen, thereby so that the vertical electrothermal furnace furnace shell 9 that links to each other with lifting table 6 rises, until specimen reaction device 2 is in the constant temperature zone of electrothermal furnace heater 30, cover insulation cover 32; By supply station 21 and mass-flow gas meter 22 inert gas is passed into by air intake opening 19 and to lift in the standpipe 24, flow is approximately 4L/min; After this utilize temperature controller 23, measurement of furnace temperature thermopair 28, heater 30, with the programming rate of≤10 ℃/min vertical electrothermal furnace is heated up.
D, testing process.
When being measured by sample temperature measurement thermopair 25, and reach (probe temperature is between 200 ℃～1200 ℃) behind the probe temperature that experimental program predesignates, constant temperature 30min by computer-controlled signal feedback device 20 shown temperature; Then utilize reducing gas to replace indifferent gas with the same traffic of about 4L/min.Utilize real-time quality and the weight loss of electronic balance 18 and 20 continuous coverages of signal feedback device and record sample 3 in the reduction process, sample 3 no longer weightlessness be after balance shows that numerical value tends towards stability, cut off reducing gas, the flow speed with about 4L/min changes logical inert gas again.
E, end experiment.
After reduction detects and finishes, the transmission gear 15 that motor 14 axles of recycling forward rotation drive drives transmission shaft 13, leading screw 12, nut sleeve 8 successively, lifting table 6 is descended, thereby so that the vertical electrothermal furnace furnace shell 9 that links to each other with lifting table 6 descends, until specimen reaction device 2 places outside the boiler tube 29, take out sample 3, carry out lower group of detection.
The above describes in detail pick-up unit and the method for the iron ore raw material detection provided by the present invention; although represented and described some embodiments of the present invention; but those skilled in the art should understand that; in the situation that does not break away from the principle of the present invention that limited its scope by claim and equivalent thereof and spirit; can make amendment and perfect to these embodiment these modifications and improve also should be in protection scope of the present invention.
Claims (3)
1. the pick-up unit for detection of iron ore raw material reductibility and free reduction swellability is characterized in that, comprises vertical electrothermal furnace system, mechanical elevating system, electronic balance, lifts riser systems, computer control system and gas supply system; Shaft furnace electrothermal furnace system comprises: bell (1), furnace shell (9), binding post (10), fire resistive material (26), measurement of furnace temperature thermopair (28), boiler tube (29), heater (30), protection tube (31) and insulation cover (32); The mechanical elevating system comprises: leveling circle (5), lifting table (6), sliding sleeve (7), nut sleeve (8), column (11), leading screw (12), transmission shaft (13), motor (14), transmission gear (15), fixture (16), base (17) and electronic balance (18); Lifting riser systems comprises: specimen reaction device (2), porous barrier (4), air intake opening (19), lift standpipe (24), sample temperature measurement thermopair (25) and high aluminium ball (27); Computer control system comprises: signal feedback device (20), mass-flow gas meter (22) and temperature controller (23); Gas supply system comprises: gas distribution station (21);
Wherein, bell (1) is buckled in furnace shell (9) top, the insulation cover (32) of center drilling is housed on the top of boiler tube (29), boiler tube (29) and protection tube (31) all are fixed within the furnace shell (9), be filled with fire resistive material (26) between the furnace shell of vertical heating furnace (9) and the protection tube (31), heater (30) is enclosed within the skin of boiler tube (29), the lower end of heater (30) is furnished with binding post (10), binding post (10) is connected by electric wire with temperature controller (23) again, insert measurement of furnace temperature thermopair (28) in the middle part of body of heater in the furnace shell (9) at place, flat-temperature zone and the shell in the fire resistive material (26) after the perforate, measurement of furnace temperature thermopair (28) is connected by compensating wire with temperature controller (23) again; Furnace shell (9) and lifting table (6) are by leveling circle (5) Joint, lifting table (6) and sliding sleeve (7) interfix, sliding sleeve (7) is enclosed within column (11) upward and can slides up and down along column (11), column (11), motor (14) all is fixed on the base (17), the transmission gear (15) that the axle of motor (14) connects is meshed with the gear that is fixed on transmission shaft (13) lower end, transmission shaft (13) is fixed on the base (17) by fixture (16), the lower end Joint of the upper end of transmission shaft (13) and leading screw (12), the upper end of leading screw (12) is meshed with nut sleeve (8) again, nut sleeve (8) is fixed on the lifting table (6), and nut sleeve (8) drive lifting table (6) and body of heater thereof under the effect of leading screw (12) slide up and down or fixing along column (11); Electronic balance (18) places on the base (17), electronic balance (18) links to each other with the signal feedback device (20) of computer control system by data line, lifting standpipe (24) vertically stands on the electronic balance (18), lifting standpipe (24) top top and be provided with the porous barrier (4) of horizontal positioned, at porous barrier (4) filling high aluminium ball (27) to the space of lifting standpipe (24) top; Specimen reaction device (2) closely is nested in the top of lifting standpipe (24), have equally distributed aperture on the base plate of specimen reaction device (2), hole diameter is lower than the minimum diameter of sample, the in-built sample of specimen reaction device (2) (3), insert sample temperature measurement thermopair (25) in the bottom perforate of lifting standpipe (24), the idol head of sample temperature measurement thermopair (25) passes the base plate of porous barrier (4) and high aluminium ball (27) and specimen reaction device (2), bury in the centre of sample (3), the lower end of sample temperature measurement thermopair (25) links to each other with signal feedback device (20) by compensating wire, be welded with air intake opening (19) in the bottom perforate of lifting standpipe (24), air intake opening (19) links to each other with the output terminal of mass-flow gas meter (22), and the input end of mass-flow gas meter (22) links to each other with gas distribution station (21) again.
2. a method of utilizing pick-up unit as claimed in claim 1 that the iron ore raw material reductibility is measured is characterized in that, comprises the steps:
A, installation detecting device also load sample (3);
With pick-up unit according to Standard as claimed in claim 1 after, throw off insulation cover (32), the transmission gear (15) that the axle of the motor (14) by forward rotation drives drives transmission shaft (13), leading screw (12), nut sleeve (8) successively, lifting table (6) is descended, thereby so that the vertical electrothermal furnace furnace shell (9) that links to each other with lifting table (6) descends, expose outside the boiler tube (29) until lift the top of standpipe (24); Porous barrier (4) to the space-filling high aluminium ball (27) of lifting standpipe (24) top so that air-flow is even, the specimen reaction device (2) that sample (3) then will be housed closely is nested in the top of lifting standpipe (23), and guarantees specimen reaction device (2) and lift between standpipe (24) air tight;
B, sample heat up;
The transmission gear (15) that utilizes the axle of counter-rotational motor (14) to drive drives transmission shaft (13) successively, leading screw (12), nut sleeve (8), lifting table (6) is risen, thereby so that the vertical electrothermal furnace furnace shell (9) that links to each other with lifting table (6) rises, until specimen reaction device (2) is in the constant temperature zone of electrothermal furnace heater (30), cover insulation cover (32), by supply station (21) and mass-flow gas meter (22) inert gas is passed into through air intake opening (19) and lift in the standpipe (24); After this utilize temperature controller (23), measurement of furnace temperature thermopair (28), heater (30), with the programming rate of≤10 ℃/min vertical electrothermal furnace is heated up;
C, testing process;
When being measured by sample temperature measurement thermopair (25), and after reaching the probe temperature that experimental program predesignates by the shown temperature of computer-controlled signal feedback device (20), then constant temperature 30 minutes utilize reducing gas to replace indifferent gas; Utilize real-time quality and the weight loss of electronic balance (18) and signal feedback device (20) continuous coverage and record sample (3) in the reduction process, sample (3) no longer weightlessness be after balance shows that numerical value tends towards stability, cut off reducing gas, change again logical inert gas;
D, end experiment;
After reduction detects and finishes, the transmission gear (15) that the axle of the motor (14) of recycling forward rotation drives drives transmission shaft (13), leading screw (12), nut sleeve (8) successively, lifting table (6) is descended, thereby so that the vertical electrothermal furnace furnace shell (9) that links to each other with lifting table (6) descends, until specimen reaction device (2) places outside the boiler tube (29), take out sample (3), carry out lower group of detection;
E, reduction degree calculate;
Of poor quality before and after the sample reduction reaction is that the ratio of the weight loss of sample in the course of reaction total oxygen demand of being combined with ferro element in sample is the reduction degree of sample.
3. a method of utilizing pick-up unit as claimed in claim 1 that the free reduction swellability of iron ore raw material is measured is characterized in that, comprises the steps:
A, sample reduction front volume are measured;
Measure the cumulative volume of sample, in order to detecting;
B, installation detecting device also load sample (3);
With pick-up unit according to Standard as claimed in claim 1 after, throw off insulation cover (32), the transmission gear (15) that the axle of the motor (14) by forward rotation drives drives transmission shaft (13), leading screw (12), nut sleeve (8) successively, lifting table (6) is descended, thereby so that the vertical electrothermal furnace furnace shell (9) that links to each other with lifting table (6) descends, expose outside the boiler tube (29) until lift the top of standpipe (24); Porous barrier (4) to the space-filling high aluminium ball (27) of lifting standpipe (24) top so that air-flow is even; The sample (3) that detects minute is placed on the support (33), is separated by glazing bar (34) between sample and sample, to guarantee the free reduction swellability of sample (3); The support (33) that sample (3) after this will be housed is put into specimen reaction device (2); Specimen reaction device (2) closely is nested in the top of lifting standpipe (24) again, and guarantees specimen reaction device (2) and lift between standpipe (24) air tight;
C, sample heat up;
The transmission gear (15) that utilizes the axle of counter-rotational motor (14) to drive drives transmission shaft (13), leading screw (12), nut sleeve (8) successively, lifting table (6) is risen, thereby so that the vertical electrothermal furnace furnace shell (9) that links to each other with lifting table (6) rises, until specimen reaction device (2) is in the constant temperature zone of electrothermal furnace heater (30), cover insulation cover (32); By supply station (21) and mass-flow gas meter (22) inert gas is passed into by air intake opening (19) and to lift in the standpipe (24); After this utilize temperature controller (23), measurement of furnace temperature thermopair (28), heater (30), with the programming rate of≤10 ℃/min vertical electrothermal furnace is heated up;
D, testing process;
When being measured by sample temperature measurement thermopair (25), and after reaching the probe temperature that experimental program predesignates by the shown temperature of computer-controlled signal feedback device (20), then constant temperature 30 minutes utilize reducing gas to replace indifferent gas; Utilize real-time quality and the weight loss of electronic balance (18) and signal feedback device (20) continuous coverage and record sample (3) in the reduction process, sample (3) no longer weightlessness be after balance shows that numerical value tends towards stability, cut off reducing gas, change again logical inert gas;
E, end experiment;
After reduction detects and finishes, the transmission gear (15) that the axle of the motor (14) of recycling forward rotation drives drives transmission shaft (13), leading screw (12), nut sleeve (8) successively, lifting table (6) is descended, thereby so that the vertical electrothermal furnace furnace shell (9) that links to each other with lifting table (6) descends, until specimen reaction device (2) places outside the boiler tube (29), take out sample (3), carry out lower group of detection.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210590036.0A CN103076256B (en) | 2012-12-31 | 2012-12-31 | The pick-up unit detected for iron ore raw material and method |
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| CN201210590036.0A CN103076256B (en) | 2012-12-31 | 2012-12-31 | The pick-up unit detected for iron ore raw material and method |
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| CN103076256A true CN103076256A (en) | 2013-05-01 |
| CN103076256B CN103076256B (en) | 2015-10-28 |
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| CN201210590036.0A Expired - Fee Related CN103076256B (en) | 2012-12-31 | 2012-12-31 | The pick-up unit detected for iron ore raw material and method |
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| CN103439212A (en) * | 2013-08-07 | 2013-12-11 | 华中科技大学 | Double-furnace body thermobalance capable of changing temperature quickly |
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| CN110044517A (en) * | 2019-03-06 | 2019-07-23 | 泉州丰泽久泰工业设计有限公司 | A kind of mobile temperature sensor of 3D printer |
| CN111380897A (en) * | 2020-03-23 | 2020-07-07 | 本钢板材股份有限公司 | Iron ore high temperature performance survey device |
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| CN103364302A (en) * | 2013-07-17 | 2013-10-23 | 国家电网公司 | Test device for mechanical impurity determination of oil product and additive |
| CN103364302B (en) * | 2013-07-17 | 2015-12-09 | 国家电网公司 | A kind of test unit being exclusively used in oil product and adjuvant mechanical impurity mensuration |
| CN103389254A (en) * | 2013-07-30 | 2013-11-13 | 中国科学技术大学 | Experiment device for fire spread characteristics of thermal insulation material under external adjustable constant radiation condition |
| CN103389254B (en) * | 2013-07-30 | 2015-04-22 | 中国科学技术大学 | Experiment device for fire spread characteristics of thermal insulation material under external adjustable constant radiation condition |
| CN103439212A (en) * | 2013-08-07 | 2013-12-11 | 华中科技大学 | Double-furnace body thermobalance capable of changing temperature quickly |
| CN103439212B (en) * | 2013-08-07 | 2015-09-23 | 华中科技大学 | A kind of quick changeable temperature double-furnace-body double thermobalance |
| CN104374669A (en) * | 2014-11-19 | 2015-02-25 | 东北大学 | Direct reduction and smelting reduction linked testing device and use method thereof |
| CN104374669B (en) * | 2014-11-19 | 2017-02-22 | 东北大学 | Direct reduction and smelting reduction linked testing device and use method thereof |
| CN104749065A (en) * | 2015-03-25 | 2015-07-01 | 河北钢铁股份有限公司邯郸分公司 | Detection device and method for surface releasing performance of pellets |
| CN106053285A (en) * | 2016-05-27 | 2016-10-26 | 武汉钢铁股份有限公司 | Apparatus for detecting high-temperature thermal properties of coke |
| CN106546695A (en) * | 2016-10-17 | 2017-03-29 | 沈阳建筑大学 | Dry dust collection method tests coal combustion rate device and method |
| CN106706837A (en) * | 2016-12-06 | 2017-05-24 | 上海理工大学 | High-temperature multifunctional coke reactivity testing equipment and method |
| CN106706837B (en) * | 2016-12-06 | 2019-11-01 | 上海理工大学 | High temperature multifunctional coke reactivity test equipment and method |
| CN107907571A (en) * | 2017-11-13 | 2018-04-13 | 山西大学 | One kind is used to characterize concrete explosive spalling degree test stove and test method |
| CN108918319A (en) * | 2018-05-11 | 2018-11-30 | 东北大学 | A kind of device and method for probing into metallurgical slag Yu experiment crucible material reaction mechanism |
| CN110044517A (en) * | 2019-03-06 | 2019-07-23 | 泉州丰泽久泰工业设计有限公司 | A kind of mobile temperature sensor of 3D printer |
| CN110044517B (en) * | 2019-03-06 | 2020-09-29 | 泉州圆创机械技术开发有限公司 | Movable temperature sensor for 3D printer |
| CN111380897A (en) * | 2020-03-23 | 2020-07-07 | 本钢板材股份有限公司 | Iron ore high temperature performance survey device |
| CN112473611A (en) * | 2020-11-10 | 2021-03-12 | 华中科技大学 | Reactor for researching biomass three-component pyrolysis interaction reaction |
| CN112473611B (en) * | 2020-11-10 | 2022-03-18 | 华中科技大学 | Reactor for researching biomass three-component pyrolysis interaction reaction |
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