CN203287278U - Detection device for detecting iron ore raw material - Google Patents
Detection device for detecting iron ore raw material Download PDFInfo
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- CN203287278U CN203287278U CN2012207476744U CN201220747674U CN203287278U CN 203287278 U CN203287278 U CN 203287278U CN 2012207476744 U CN2012207476744 U CN 2012207476744U CN 201220747674 U CN201220747674 U CN 201220747674U CN 203287278 U CN203287278 U CN 203287278U
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Abstract
The utility model discloses a detection device for detecting iron ore raw material. The detection device replaces a suspension type detection device in the prior art, and comprises a vertical type electrothermal furnace system, a mechanical lifting system, an electronic balance, a lift stand pipe system, a computer control system and a gas feed system, wherein the weighing balance is arranged at the bottom of a furnace body; the balance supports the iron ore reduction sample through a lift stand pipe, and measures the weight of the sample in real time; the reduction degree of the sample can be calculated according to the weight loss of the sample after the reduction and the oxygen content of the sample before the reduction. The detection device provided by the utility has the characteristics of simple structure, low balance work environment temperature, high detection precision, convenience in operation and the like.
Description
Technical field
The utility model relates to ferrous material metallurgical performance detection field.More particularly, relate to the pick-up unit that detects for iron ore raw material.
Background technology
In order really to realize the high-efficiency cleaning utilization of Metallurgical resources, at first must grasp the metallurgical performance into the 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, then vertical hanging makes hanging basket be in and is connected with in the high temperature furnace pipe of reducing gas in the balance center that is positioned at upper of furnace body.This kind mode, pass into reducing gas in boiler tube from bottom of furnace body, due to the boiler tube cross-sectional area greater than the hanging basket cross-sectional area, reducing gas and the incomplete sample that passes through.In addition, reducing gas when through hanging basket, material being reduced, 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.Therefore, adopt the test result that this mode obtains can not reflect exactly ferrous material actual performance in stove in ironmaking production.
Another kind is hanging tube type, be about to material and pack in the swing pipe of being made by high-temperature alloy steel, then be hung vertically in the balance center that is positioned at upper of furnace body, make swing pipe be in high temperature furnace pipe, this mode is directly reducing gas to be passed into from the bottom of swing pipe, guarantee reducing gas complete pass through sample.But, because swing pipe is longer, while adopting suspension type, be difficult to guarantee that swing pipe does not contact with boiler tube or heater block, in case contact to some extent, balance just can not accurately measure the accurate weightlessness of material, causes operational stability 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, the heat that the heat radiation that occurs due to body of heater self and the Fe-Cr-Al wire that is used for hanging produce is conducted, make the temperature of weighing balance up to upper Baidu, cause the balance-gravity faulty sensor, can't realize that Measurement accuracy very causes balance to be damaged.
The utility model content
Technical problem to be solved in the utility model 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 the pick-up unit that iron ore raw material detects, for detection of reductibility and the free reduction swellability of iron ore raw material.
The technical solution of the utility model is: design a kind of pick-up unit 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, and the oxygen sensor front according to the weight loss after the material reduction and reduction calculated the reduction degree of material.
Pick-up unit provided by the utility model 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 vertically lifted in the constant temperature zone boiler tube center at electrothermal furnace middle part by the standpipe of lifting that is placed on electronic balance, the thermopair of electrothermal furnace heater and test furnace temperature all is connected to by on computer-controlled temperature controller, lifting the thermopair and the electronic balance that are used for the measurement specimen temperature installed in standpipe all is connected to by computer-controlled signal feedback device, gas supply system is equipped with mass-flow gas meter, 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, the certain thickness high aluminium ball of packing on it, then the specimen reaction device is nested in and lifts on standpipe.
Also have, the specimen reaction device comprises two kinds, a kind of reductibility for detection of sample, another kind add with after the support of glazing bar for detection of the free reduction swellability of sample.
The lifting type iron ore raw material reductibility that the utility model proposes and free reduction swellability pick-up unit have the following advantages:
(1) the utility model 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, avoided the impact of gas edge effect on accuracy of detection.
(3) the utility model 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 utility model both can be used for detecting the iron ore raw material reductibility also can add in the specimen reaction device with after the support of glazing bar for detection of the free reduction swellability of iron ore raw material.
Description of drawings
While by reference to the accompanying drawings the utility model being described below, above and other advantage and disadvantage of the present utility model will become clearer and be easier to and understand, wherein:
Fig. 1 is the detection iron ore raw material reductibility that the utility model proposes and the structural representation of free reduction swellability device.
Fig. 2 is the structural representation of lifting the standpipe part in the utility model.
Fig. 3 is the left view of Fig. 2.
Fig. 4 is the structural representation of test samples reductibility specimen reaction device part used.
Fig. 5 is the structural representation of the free reduction swellability of test samples specimen reaction device part used.
Fig. 6 is the vertical view of Fig. 5 medium-height trestle.
Embodiment
The utility model discloses a kind of pick-up unit 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 utility model 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 in figure, 3 is sample.
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, within boiler tube 29 and protection tube 31 all are fixed on furnace shell 9, be filled with fire resistive material 26 between the furnace shell 9 of vertical heating furnace and 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 furnace shell 9 at place, flat-temperature zone and shell in fire resistive material 26 after perforate in the middle part of body of heater, 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 column 11 and can slides up and down along column 11, column 11, motor 14 all is fixed on 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 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 lifting table 6, 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 is placed on base 17, electronic balance 18 is connected with the signal feedback device 20 of computer control system by data line, lifting standpipe 24 vertically stands on electronic balance 18, approximately the 40-60mm place is provided with the porous barrier 4 of horizontal positioned on top that distance is lifted standpipe 24, hole diameter is 2mm, at porous barrier 4 to filling the high aluminium ball 27 of diameter 3mm in the space of lifting standpipe 24 tops, while detecting the iron ore raw material reductibility, specimen reaction device 2 used 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 3 of specimen reaction device 2, 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 is connected 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 is connected with the output terminal of mass-flow gas meter 22, the input end of mass-flow gas meter 22 is connected with gas distribution station 21 again.
While utilizing above-mentioned detection device to be used to measure the reductibility of iron ore raw material, comprise the following steps:
A, installation detecting device also load sample 3.
After pick-up unit is 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 make the vertical electrothermal furnace furnace shell 9 that is connected with lifting table 6 descend, until lift the top of standpipe 24, expose outside boiler tube 29.
At porous barrier 4 to the high aluminium ball 27 of the space-filling diameter 3mm that lifts standpipe 24 tops 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 24 of standpipes air tight.
B, sample 3 is heated up.
Utilize the transmission gear 15 that the axle of counter-rotational motor 14 drives to drive successively transmission shaft 13, leading screw 12, nut sleeve 8, make lifting table 6 increase, thereby make the vertical electrothermal furnace furnace shell 9 that is connected with lifting table 6 rise, 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 and lifts in standpipe 24 through air intake opening 19, 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 by sample temperature measurement thermopair 25, being measured, and by the shown temperature of computer-controlled signal feedback device 20, reach (probe temperature is between 200 ℃～1200 ℃) after the probe temperature that experimental program predesignates, constant temperature 30 minutes; Then utilize reducing gas to replace indifferent gas with the same traffic of about 4L/min.Utilize electronic balance 18 and 20 continuous coverages of signal feedback device in reduction process and record real-time quality and the weight loss of sample 3, sample 3 no longer weightlessness be after balance shows that numerical value tends towards stability, cut off reducing gas, more approximately with the flow speed of 4L/min, change 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 make the vertical electrothermal furnace furnace shell 9 that is connected with lifting table 6 descend, until specimen reaction device 2 is placed in outside 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 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.
While utilizing above-mentioned detection device to be used to measure the free reduction swellability of iron ore raw material, comprise the following 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 is 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 make the vertical electrothermal furnace furnace shell 9 that is connected with lifting table 6 descend, until lift the top of standpipe 24, expose outside boiler tube 29.
At porous barrier 4 to the high aluminium ball 27 of the space-filling diameter 3mm at the top of lifting standpipe 24 so that air-flow is even.As shown in Figure 5 and Figure 6, the sample of detection was placed on support 33 in 3 minutes, was separated by glazing bar 34 between sample and sample, and to guarantee the free reduction swellability of sample 3, the support 33 that sample 3 then 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 24 of standpipes air tight.
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, make lifting table 6 increase, thereby make the vertical electrothermal furnace furnace shell 9 that is connected with lifting table 6 rise,, 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 and lifted in standpipe 24 by air intake opening 19, 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 by sample temperature measurement thermopair 25, being measured, and by the shown temperature of computer-controlled signal feedback device 20, reach (probe temperature is between 200 ℃～1200 ℃) after the probe temperature that experimental program predesignates, constant temperature 30min; Then utilize reducing gas to replace indifferent gas with the same traffic of about 4L/min.Utilize electronic balance 18 and 20 continuous coverages of signal feedback device in reduction process and record real-time quality and the weight loss of sample 3, sample 3 no longer weightlessness be after balance shows that numerical value tends towards stability, cut off reducing gas, then with the flow speed of about 4L/min, change logical inert gas.
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 make the vertical electrothermal furnace furnace shell 9 that is connected with lifting table 6 descend, until specimen reaction device 2 is placed in outside boiler tube 29, take out sample 3, carry out lower group of detection.
The above describes in detail the pick-up unit for the iron ore raw material detection provided by the utility model; although represented and described embodiment more of the present utility model; but those skilled in the art should understand that; in the situation that do not break away from principle of the present utility model and the spirit that is limited its scope by claim and equivalent thereof; can modify and perfect to these embodiment, these modifications and improve also should be in protection domain of the present utility model.
Claims (1)
1. one kind is used for the pick-up unit that iron ore raw material detects, and it 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), within boiler tube (29) and protection tube (31) all are fixed on furnace shell (9), be filled with fire resistive material (26) between the furnace shell of vertical heating furnace (9) and 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 furnace shell (9) at place, flat-temperature zone and shell in fire resistive material (26) after perforate in the middle part of body of heater, 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 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 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 lifting table (6), 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) is placed on base (17), electronic balance (18) is connected with the signal feedback device (20) of computer control system by data line, lifting standpipe (24) vertically stands on electronic balance (18), lifting standpipe (24) top top and be provided with the porous barrier (4) of horizontal positioned, at porous barrier (4) to filling high aluminium ball (27) in 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) is connected 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) is connected with the output terminal of mass-flow gas meter (22), the input end of mass-flow gas meter (22) is connected with gas distribution station (21) again.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012207476744U CN203287278U (en) | 2012-12-31 | 2012-12-31 | Detection device for detecting iron ore raw material |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2012207476744U CN203287278U (en) | 2012-12-31 | 2012-12-31 | Detection device for detecting iron ore raw material |
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| CN203287278U true CN203287278U (en) | 2013-11-13 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103076256A (en) * | 2012-12-31 | 2013-05-01 | 东北大学 | Device and method for detecting iron ore raw material |
| CN104501599A (en) * | 2015-01-16 | 2015-04-08 | 中国环境科学研究院 | Multifunctional high-temperature furnace |
| CN104501597A (en) * | 2015-01-16 | 2015-04-08 | 中国环境科学研究院 | High-temperature furnace capable of weighing |
| CN104501598A (en) * | 2015-01-16 | 2015-04-08 | 中国环境科学研究院 | Multifunctional tiltable high-temperature furnace |
| CN105987602A (en) * | 2015-02-15 | 2016-10-05 | 上海宝钢化工有限公司 | Multi-purpose tube furnace and mechanism testing method using same |
-
2012
- 2012-12-31 CN CN2012207476744U patent/CN203287278U/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103076256A (en) * | 2012-12-31 | 2013-05-01 | 东北大学 | Device and method for detecting iron ore raw material |
| CN103076256B (en) * | 2012-12-31 | 2015-10-28 | 东北大学 | The pick-up unit detected for iron ore raw material and method |
| CN104501599A (en) * | 2015-01-16 | 2015-04-08 | 中国环境科学研究院 | Multifunctional high-temperature furnace |
| CN104501597A (en) * | 2015-01-16 | 2015-04-08 | 中国环境科学研究院 | High-temperature furnace capable of weighing |
| CN104501598A (en) * | 2015-01-16 | 2015-04-08 | 中国环境科学研究院 | Multifunctional tiltable high-temperature furnace |
| CN104501597B (en) * | 2015-01-16 | 2016-08-17 | 中国环境科学研究院 | Can weigh high temperature furnace |
| CN104501598B (en) * | 2015-01-16 | 2017-01-18 | 中国环境科学研究院 | Multifunctional tiltable high-temperature furnace |
| CN105987602A (en) * | 2015-02-15 | 2016-10-05 | 上海宝钢化工有限公司 | Multi-purpose tube furnace and mechanism testing method using same |
| CN105987602B (en) * | 2015-02-15 | 2018-01-26 | 上海宝钢化工有限公司 | The mechanism test method of multipurpose tube furnace |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131113 Termination date: 20131231 |