CN204882420U - Iron ore sintering hot properties detection device - Google Patents
Iron ore sintering hot properties detection device Download PDFInfo
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- CN204882420U CN204882420U CN201520660544.0U CN201520660544U CN204882420U CN 204882420 U CN204882420 U CN 204882420U CN 201520660544 U CN201520660544 U CN 201520660544U CN 204882420 U CN204882420 U CN 204882420U
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- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 title claims abstract description 108
- 229910052742 iron Inorganic materials 0.000 title claims abstract description 54
- 238000005245 sintering Methods 0.000 title claims abstract description 49
- 238000001514 detection method Methods 0.000 title abstract description 24
- 238000010438 heat treatment Methods 0.000 claims abstract description 62
- 230000007246 mechanism Effects 0.000 claims abstract description 33
- 238000001816 cooling Methods 0.000 claims abstract description 16
- 238000005452 bending Methods 0.000 claims description 11
- 230000003028 elevating effect Effects 0.000 claims description 11
- 239000011435 rock Substances 0.000 claims description 3
- 238000012360 testing method Methods 0.000 abstract description 28
- 238000000034 method Methods 0.000 description 13
- 230000000694 effects Effects 0.000 description 11
- 239000007791 liquid phase Substances 0.000 description 9
- 238000009413 insulation Methods 0.000 description 8
- 230000008569 process Effects 0.000 description 7
- 230000001195 anabolic effect Effects 0.000 description 6
- 238000013461 design Methods 0.000 description 6
- 230000006870 function Effects 0.000 description 6
- 239000000463 material Substances 0.000 description 6
- 229910006295 Si—Mo Inorganic materials 0.000 description 5
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 5
- 238000002474 experimental method Methods 0.000 description 5
- 230000008859 change Effects 0.000 description 4
- 238000010792 warming Methods 0.000 description 4
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 3
- 230000001174 ascending effect Effects 0.000 description 3
- 239000000835 fiber Substances 0.000 description 3
- 239000000843 powder Substances 0.000 description 3
- 229910052710 silicon Inorganic materials 0.000 description 3
- 239000010703 silicon Substances 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 239000011230 binding agent Substances 0.000 description 2
- 230000033228 biological regulation Effects 0.000 description 2
- 230000036760 body temperature Effects 0.000 description 2
- 239000000919 ceramic Substances 0.000 description 2
- 238000004891 communication Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 230000010363 phase shift Effects 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 230000004382 visual function Effects 0.000 description 2
- 229910004298 SiO 2 Inorganic materials 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 238000003556 assay Methods 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 238000001354 calcination Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
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- 230000009711 regulatory function Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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Abstract
The utility model discloses an iron ore sintering hot properties detection device belongs to the iron ore and detects technical field. The utility model discloses a detection device includes the furnace body, set up furnace, feeding mechanism, heating element and exhaust system in furnace body upper portion, be equipped with heating element in the furnace, the furnace bottom is equipped with the furnace base, has seted up the feed port on the furnace base, the furnace body middle part is provided with the chamber of feeding, sets up the furnace gate on one side of the chamber of feeding, feeding mechanism upper end be located the intracavity of feeding, the sample that awaits measuring that feeding mechanism is last to be placed passes and sends into the furnace internal heating from the feed port. Adopt the device to examine time measuring, intensification cooling speed is fast, and the temperature is difficult in the furnace scatters and disappears, a plurality of samples of detectable, and the testing result is reliable, convenient to use.
Description
Technical field
The utility model relates to Testing Techniques for Iron Ore field, more particularly, relates to a kind of iron ore sintering hot properties pick-up unit.
Background technology
Iron ore sintering hot properties refers to the high-temperature physics chemical characteristic that iron ore shows in sintering process, and the research of iron ore high-temperature performance is to understanding fully that the behavior of iron ore under sintering process hot conditions has very strong directive significance.
At present, the method of domestic detection iron ore sintering hot properties mainly contains two kinds, and one adopts point-like infrared heating heating furnace to detect, and the feature of the method is that heating-cooling speed is fast, energy simulate sintering process, but shortcoming is as follows: and 1. point-like infrared heating heating furnace is expensive, operating cost is high; 2. once can only detect a sample, efficiency is lower; 3. limit by infrared heating heating furnace focus point scope, sample size generally only has 8mm, and due to one time, sample size is on the low side, and therefore need the representativeness that could be improved test samples by the detection of multiple sample, testing amount is large.Another kind of detection method adopts simple and easy electric furnace to detect, the feature of this detection method is simple and easy electric furnace low price, cost is lower, once batch to be tested can be done, efficiency is higher, but the programming rate of simple and easy electric furnace heat insulation effect that is slow, body of heater is poor, is difficult to simulate sintering process, acquired results representativeness is not strong, and practicality is poor.
As Chinese Patent Application No.: 201310020056.9, the applying date: on January 21st, 2013, this application case discloses a kind of high temperature elevator furnace, comprise furnace shell, be arranged on the burner hearth of furnace shell inside, furnace bottom hoistable platform, temperature thermocouple, heating element, gas handling system and gas outlet, burner hearth is made up of furnace roof and square body of heater, the bottom of described body of heater and top are opened wide, furnace roof is arranged on the top of body of heater, the upper end of furnace bottom hoistable platform is connected with the fire door for closed furnace inner chamber, be provided with in furnace shell and stretch into heating element in burner hearth cavity and temperature thermocouple, lower furnace portion is provided with gas handling system, described gas handling system is made up of draft tube and the primary heater be serially connected in draft tube, draft tube one end is communicated with burner hearth cavity, the other end passes furnace shell and is in communication with the outside, the top of burner hearth is provided with gas outlet, and gas outlet one end is communicated with burner hearth cavity, and the other end passes furnace shell and is in communication with the outside.
China Patent No.: ZL201310347878.8, authorized announcement date: on November 5th, 2014, this application case discloses the energy-efficient high-temperature electric resistance furnace of a kind of fire door lift Whole fiber burner hearth, the program furnace binding design, burner hearth Material selec-tion with in temperature control compared with traditional electric furnace innovation advantage obvious: fire door is in bottom, lifting is controlled by leading screw, fire door can put calcining sample after falling in the above, put convenient and charging capacity is many, fire door rises after closedown, sealing is fabulous, not easily dispels the heat from fire door; Adopt multi-gradient heatproof Whole fiber burner hearth, heat-proof quality is excellent, and amount of stored heat is few, and furnace energy-saving effect is very remarkable, and heating and cooling are rapid; Unique furnace roof splicing structure design makes it not easily cave in; The heating of heater four sides, in stove, warm field is even.
Above-mentioned two kinds of furnace devices are when changing sample, and material platform integral elevating, heat leaks, and cannot continuous detecting use.When using next time, still need just can reach sintering temperature through long-time heating, efficiency is low, and the detection not being suitable for iron ore sintering hot properties uses.
Utility model content
1. the utility model technical matters that will solve
The purpose of this utility model is to overcome the deficiency that in prior art, common electric furnace heating rate is slow, heat insulation effect is poor, provide a kind of iron ore sintering hot properties pick-up unit, the technical solution of the utility model, the temperature that improve in burner hearth becomes efficiency, improve the heat insulation effect of tradition lifting testing furnace, and can detect the anabolic temperature of iron ore, Liquid phase flowability, liquid phase growing amount, liquid phase intensity and binder strength, easy to use, test efficiency is high, and experimentation cost is low.
2. technical scheme
For achieving the above object, the technical scheme that the utility model provides is:
A kind of iron ore sintering hot properties pick-up unit of the present utility model, comprise body of heater, the burner hearth be arranged in upper of furnace body, feed mechanism, heating element and exhaust system, be provided with heating element in described burner hearth, burner hearth bottom is provided with hearth base, and hearth base offers charging hole; Be provided with loading chamber in the middle part of described body of heater, offer fire door in loading chamber side, described feed mechanism upper end is positioned at loading chamber, and the sample to be tested that feed mechanism is placed passes and sends in burner hearth and heats from charging hole.
Further improve as the utility model, described heating element is U-shaped structure, and the straight-line segment diameter of heating element is greater than the diameter of bending segment, bending segment diameter d≤4mm, and heating element its center is apart from 20mm≤D≤25mm.
Further improve as the utility model, described upper furnace offers viewport, in viewport, be provided with camera head.
Further improve as the utility model, described feed mechanism comprises elevating mechanism, supporting seat and feeding table, feeding table for placing sample is fixed on position relative with charging hole on supporting seat, and elevating mechanism to be arranged on below supporting seat and to control supporting seat and moves up and down.
Further improve as the utility model, lower surface and the burner hearth sidewall of described hearth base surround groove, and charging hole is communicated with groove, the supporting seat in feed mechanism are provided with the base boss with fit depressions.
Further improve as the utility model, be hinged with flame shield along body of heater length direction, this flame shield rotate to during horizontal level and fit depressions block charging hole.
Further improve as the utility model, described feed mechanism comprises stepper motor, screw mandrel and backstay, and described backstay is fixedly connected with supporting seat and limits supporting seat and rock, and screw mandrel is flexibly connected with supporting seat, stepper motor drives screw mandrel to rotate, and then drives supporting seat to move up and down.
Further improve as the utility model, this pick-up unit also comprises and is located at the cooling system of burner hearth periphery and the control box of bottom of furnace body, at control box built with attemperating unit.
3. beneficial effect
The technical scheme adopting the utility model to provide, compared with prior art, has following beneficial effect:
(1) a kind of iron ore sintering hot properties pick-up unit of the present utility model, at burner hearth bottom, hearth base is set, charging hole is offered at hearth base, sample is admitted to burner hearth from charging hole, change the overall feeding manner of traditional electric elevator furnace, in burner hearth, temperature is is not easily scattered and disappeared, and decreases the heating-up time during continuous detecting; The diameter of the heating element bending segment adopted is less, thus can have less centre distance, and in burner hearth, the heating element of arrangement is tightr, and quick heating, further increases heating rate;
(2) a kind of iron ore sintering hot properties pick-up unit of the present utility model, lower surface and the burner hearth sidewall of hearth base surround groove, supporting seat in feed mechanism is provided with the base boss with fit depressions, flame shield is hinged with along body of heater length direction, when sample detects, base boss and groove fit prevent heat from leaking, in the non-detection period, flame shield is proceeded in groove and blocks charging hole, play insulation effect, reduce the heating-up time of test next time, can continuous detecting test be carried out;
(3) a kind of iron ore sintering hot properties pick-up unit of the present utility model, viewport is offered in upper furnace, in viewport, be provided with camera head, be convenient to the state change observing sample in body of heater, for operating personnel judge that test progress is provided convenience online;
(4) a kind of iron ore sintering hot properties pick-up unit of the present utility model, during detection, maximum temperature can reach 1600 DEG C, the flat-temperature zone temperature difference≤± 1 DEG C, and there is rapid temperature-regulating function, sample visual function in stove, with parallel sample multiple under operating mode measuring ability simultaneously, this pick-up unit cost only has 1/4 of infrared heating heating furnace, but detection efficiency is four times (when material platform is 4) of infrared heating heating furnace, and energy simulate industry sintering process, testing result representativeness is good, drastically increases the detection efficiency of iron ore sintering hot properties.
Accompanying drawing explanation
Fig. 1 is the main TV structure schematic diagram of a kind of iron ore sintering hot properties pick-up unit of the present utility model;
Fig. 2 is the side-looking structural representation of a kind of iron ore sintering hot properties pick-up unit of the present utility model;
Fig. 3 is the structural representation of heating element in the utility model.
Label declaration in schematic diagram: 1, control box; 2, feed mechanism; 201, supporting seat; 202, base boss; 203, feeding table; 204, stepper motor; 205, screw mandrel; 206, backstay; 3, burner hearth; 301, hearth base; 302, groove; 303, flame shield; 304, charging hole; 305, heating element; 3051, straight-line segment; 3052, bending segment; 4, camera head; 5, exhaust fan.
Embodiment
For understanding content of the present utility model further, in conjunction with the accompanying drawings and embodiments the utility model is described in detail.
Embodiment 1
Composition graphs 1 and Fig. 2, a kind of iron ore sintering hot properties pick-up unit of the present embodiment, comprises body of heater, the burner hearth 3 be arranged in upper of furnace body, feed mechanism 2, heating element 305, thermopair and exhaust system, is provided with heating element 305 in burner hearth 3.Different from traditional chamber structure, the burner hearth 3 in the present embodiment adopts ceramic fiber sheet material, has low accumulation of heat, high energy-conservation feature.Be provided with hearth base 301 bottom burner hearth 3, this hearth base 301 makes burner hearth 3 bottom close, and heat cannot scatter and disappear.Hearth base 301 offers two circular charging holes 304, and charging hole 304 diameter is not more than 50mm, and the less heat insulation effect of charging hole is better, may be selected to be 50mm.
In addition, different from the open feeding structure of common electric furnace, be provided with loading chamber in the middle part of the body of heater of the present embodiment, offer fire door in loading chamber side, feed mechanism 2 upper end is positioned at loading chamber, and the sample to be tested that feed mechanism 2 is placed passes and sends into heating in burner hearth 3 from charging hole 304.Feed mechanism 2 comprises elevating mechanism, supporting seat 201 and feeding table 203, is fixed on position relative with charging hole 304 on supporting seat 201 for the feeding table 203 placing sample, and elevating mechanism to be arranged on below supporting seat 201 and to control supporting seat 201 and moves up and down.
What deserves to be explained is, in order to coordinate the structure of charging hole 304, adopt columniform alundum tube as feeding table 203, alundum tube upper surface placed high temperature resistant pad, effectively ensure that intensity and the serviceable life of feeding table 203.Each feeding table 203 all arranges thermopair, and alundum tube is vertically arranged, and its diameter range is 20 ~ 45mm, is chosen as 45mm, and alundum tube internal diameter can be 10 ~ 35mm, to load cylindrical sample.When feeding, elevating mechanism drives on feeding table 203 and moves, two alundum tubes are corresponding with charging hole 304 position, just can pass from charging hole 304, supporting seat 201 contacts with hearth base 301, can prevent heat from leaking from charging hole 304 to a certain extent, all feeding table 203 upper surfaces all can be in the flat-temperature zone scope of burner hearth 3 at experimental state.After being completed, fall feeding table 203, because charging hole 304 sectional area is less, heat not easily scatters and disappears, and has good heat insulation effect, when secondary detection without the need to long-time intensification, improves detection efficiency.
Feed mechanism 2 in the present embodiment comprises stepper motor 204, screw mandrel 205 and backstay 206, described backstay 206 is set in parallel in supporting seat 201 two ends and is fixedly connected with supporting seat 201, backstay 206 lower end is passed from the circular hole that body of heater is arranged, and rocks when moving to limit supporting seat 201.Screw mandrel 205 is flexibly connected with supporting seat 201, and namely screw mandrel 205 can rotate by relative support seat 201; Stepper motor 204 drives screw mandrel 205 to rotate, and then drives supporting seat 201 to move up and down.
Be provided with cooling system in burner hearth 3 periphery, many water pipes are looped around burner hearth 3 surrounding, other heat sinks also can be adopted to lower the temperature, to improve cooling rate.Bottom of furnace body is provided with control box 1, and at control box 1 built with attemperating unit, this attemperating unit regulates temperature in burner hearth 3 by setting program.During enforcement, adopt controllable silicon phase-shift voltage regulating mode temperature control in attemperating unit, temp-controlling element selects silicon controlled module; Temperature control instrument selects high precise multi-section program controller PLC intelligent temperature regulation meter, and this instrument has the function such as continuous P ID adjustment, overtemperature alarm, disconnected even instruction, temperature compensation; Body of heater temperature control curve can on-line setup and record.
Exhaust system in the present embodiment comprises exhaust fan 5 and other air ducts, body of heater and loading chamber adopt hermetically sealed design, exhaust fan 5 is arranged on body of heater top, air admission hole is offered bottom loading chamber, utilize the gap bottom burner hearth 3 and between feed mechanism 2 that the gas configuring atmosphere is passed in stove, by exhaust fan 5, gas in body of heater is discharged, realize the regulable control to furnace atmosphere.
Embodiment 2
Referring to Fig. 1 and Fig. 2, a kind of iron ore sintering hot properties pick-up unit of the present embodiment, its basic structure is identical with embodiment 1, its difference is: lower surface and burner hearth 3 sidewall of hearth base 301 surround groove 302, and 4 diameters vertically arranged are that the charging hole 304 of 45mm is communicated with groove 302.Supporting seat 201 in feed mechanism 2 is provided with the base boss 202 matched with groove 302, this base boss 202 is fixed on supporting seat 201, and feeding table 203 passes from base boss 202.The diameter of feeding table 203 is less than charging hole 304 diameter, and size is 40mm, after feeding table 203 inserts charging hole 304, base boss 202 snaps in groove 302, supporting seat 201 contacts with burner hearth 3 sidewall outshot simultaneously, forms twice shutoff, has better heat insulation effect.
In addition, be hinged with flame shield 303 along body of heater length direction, this flame shield 303 is positioned at the side relative with fire door, and under non-working condition, flame shield 303 is positioned at vertical direction, touch loading chamber sidewall, can not have influence on the normal operation of elevating mechanism; When feeding table 203 falls from charging hole 304, in order to avoid heat leaks, flame shield 303 is rotated to horizontal level, make it match with groove 302 and block charging hole 304, further increase the heat insulation effect of this device.
Jacking gear in the present embodiment can connect the stock with tooth bar bottom supporting seat 201, is moved up and down, realize the lifting of feeding table 203 by gear drive stock.Meanwhile, up-down mode is provided with manually and automatic two kinds of control modes.
Embodiment 3
Referring to Fig. 1, Fig. 2 and Fig. 3; a kind of iron ore sintering hot properties pick-up unit of the present embodiment; its basic structure is identical with embodiment 2; its difference is: the heating element 305 in the present embodiment is the Si-Mo rod scribbling high temperature resistant protection against oxidation film of U-shaped structure; and straight-line segment 3051 diameter of heating element 305 is greater than the diameter of bending segment 3052; bending segment 3052 diameter d≤4mm, heating element 305 its center is apart from 20mm≤D≤25mm.Self spacing of general U-shaped Si-Mo rod is greater than 40mm usually, and too closely Si-Mo rod self then can be made inconsistent, serviceable life is extremely short.And the present embodiment makes bending segment 3052 diameter be less than straight-line segment 3051 diameter, and bending segment 3052 diameter d=3mm, heating element 305 its center, apart from D=20mm, reduces spacing greatly.For the burner hearth 3 of rectangle, the heating element 305 in stove around each experiment focal area adopts equivalence principle to arrange, each experiment focal area temperature difference <1 DEG C, heating effect is better, has programming rate faster.
Heating element 305 its center set in the utility model, apart from little, is arranged closely in burner hearth 3 surrounding, and during heating, programming rate is fast, can be warming up to 1600 DEG C, and after stable state, temperature fluctuation is little, temperature-controlled precision≤± 1 DEG C in 15min, can simulated condition.
Change to observe the state of sample, multiple viewport is provided with in burner hearth 3 two side and top, camera head 4 is provided with in viewport, this camera head 4 is the Miniature high-definition industry camera head of configuration focusing, can show and store the image of all sample changes in stove, for operating personnel judge that test progress is provided convenience.
Embodiment 4
Referring to Fig. 1, Fig. 2 and Fig. 3, a kind of iron ore sintering hot properties pick-up unit of the present embodiment, its basic structure is identical with embodiment 3, and its difference is: bending segment 3052 diameter d=4mm in the present embodiment, and heating element 305 its center is apart from D=25mm.
The utility model is changed into the lifting of the feeding table 203 of only column by the integral elevating mode of prior art, greatly reduce because sample passes in and out the thermal loss caused from burner hearth, thus ensure that the stable of fire box temperature, improves the continuity of test.The utility model is also provided with swing type flame shield at burner hearth bottom, after sample leaves burner hearth, closes sample charging hole, the fire box temperature fluctuation that further reducing dispels the heat causes.
The utility model possesses intensification and cooling function, due to the improvement of multiple structure and material, be warmed up to 1600 DEG C and control in 15min, and after stable state, temperature-controlled precision≤± 1 DEG C, can simulated condition from 600 DEG C.For realizing the rapid temperature-regulating function of the utility model device, the utility model design have employed the chamber structure of " small hearth, low heat capacity ", the high temperature import ceramic beaverboard that burner hearth material all adopts thermal capacitance little, the layout of Si-Mo rod is as far as possible close in addition, and take big current, powerful heating design, temperature control adopts controllable silicon phase-shift voltage regulating mode, greatly improves intensification efficiency, and Elema also can be adopted to replace Si-Mo rod as heating element.
Embodiment 5
A kind of iron ore sintering hot properties detection method of the present embodiment, adopts a kind of iron ore sintering hot properties pick-up unit to detect, to detect the anabolic temperature of iron ore, the steps include:
Step one, the burner hearth 3 of iron ore sintering hot properties pick-up unit is warming up to test objective temperature and is incubated, then test gas is passed into the speed of 5L/min from the air admission hole bottom loading chamber, 4 feeding tables 203 load cylindrical sample to be tested respectively, and specimen finish and length dimension are
then close fire door to prevent heat loss, put down flame shield 303, sample is sent into burner hearth 3 from charging hole 304, sample ascending velocity is 8mm/s, and speed is too fast can make thermal losses by impact;
Step 2, by attemperating unit Offered target temperature, heating rate and the constant temperature residence time;
Step 3, starting characteristics test switch, attemperating unit follow procedure performs the intensification of furnace body temperature, and the softening change of the image observation sample simultaneously taken by camera head 4, after the deformation that all samples all reach regulation, press shutdown switch, stop test manually;
Step 4, the corresponding temperature shown by image, determine the anabolic temperature of each sample, completes the anabolic temperature detection of one group of sample, repeatedly carry out with this.
For contrasting this pick-up unit and the difference of Japanese infrared heating heating furnace pick-up unit testing result better, in further testing, select listed by table 1 three kinds of iron ores in two kinds of pick-up units, carried out the contrast of sintering high temperature characteristic " anabolic temperature " index respectively.
Three kinds, table 1 is for the iron ore tested and main chemical compositions
| Iron ore title | The place of production | TFe | FeO | SiO 2 | CaO | Al 2O 3 | MgO | P | S | LOI |
| Card powder | Brazil | 66.27 | 0.06 | 2.86 | 0.03 | 1.14 | 0.02 | 0.022 | 0.008 | 1.75 |
| Yang Di powder | Australia | 57.16 | 0.20 | 6.78 | 0.05 | 1.62 | 0.07 | 0.040 | 0.014 | 10.00 |
| Newman powder | Australia | 62.59 | 0.20 | 4.77 | 0.04 | 1.92 | 0.09 | 0.084 | 0.014 | 3.56 |
Table 2 three kinds of anabolic temperature of iron ore contrast in the test result of two kinds of pick-up units
From comparing result, the assay of table 2 two kinds of pick-up units closely, illustrates that this pick-up unit can reach the equal effect of Japanese infrared heating heating furnace pick-up unit.But this pick-up unit cost only has 1/4 of infrared heating heating furnace pick-up unit, and drastically increases detection efficiency, can the multiple sample of one-time detection, there is significant progress.
Embodiment 6
A kind of iron ore sintering hot properties detection method of the present embodiment, adopts a kind of iron ore sintering hot properties pick-up unit to detect, for the Liquid phase flowability of iron ore and liquid phase growing amount, the steps include:
Step one, the burner hearth 3 of iron ore sintering hot properties pick-up unit is warming up to test objective temperature and is incubated, then test gas is passed into the speed of 15L/min from the air admission hole bottom loading chamber, 4 feeding tables 203 load cylindrical sample to be tested respectively, and specimen size is
then close fire door to prevent heat loss, put down flame shield 303, sample is sent into burner hearth 3 from charging hole 304, sample ascending velocity is 15mm/s;
Offered target temperature, heating rate, constant temperature time and displacement cooling target and rate of temperature fall respectively on step 2, temperature controller in attemperating unit;
Step 3, starting characteristics test switch, temperature is risen to target temperature and after constant temperature to the time of setting, automatically completes one of sample by displacement cooling method and take turns detection by temperature controller follow procedure.
Step 4, the artificial determination carrying out Liquid phase flowability and liquid phase growing amount according to the measurement of sample liquid phase, the sample meanwhile carrying out next round detects.
Embodiment 7
A kind of iron ore sintering hot properties detection method of the present embodiment, adopts a kind of iron ore sintering hot properties pick-up unit to detect, to detect liquid phase intensity and the binder strength of iron ore, the steps include:
Step one, the burner hearth 3 of iron ore sintering hot properties pick-up unit is warming up to test objective temperature and is incubated, then test gas is passed into the speed of 10L/min from the air admission hole bottom loading chamber, 4 feeding tables 203 load cylindrical sample to be tested respectively, and specimen size is
then close fire door to prevent heat loss, put down flame shield 303, sample is sent into burner hearth 3 from charging hole 304, sample ascending velocity is 12mm/s;
Step 2, temperature controller in attemperating unit arrange intensification one section of target temperature and heating-up time, intensification two sections of target temperatures and heating-up time, intensification three sections of target temperatures and heating-up time, experiment thermostat temperature and constant temperature time, cooling one section of target temperature and cool time, cooling two sections of target temperatures and cool time, cooling three sections of target temperatures and cool time respectively, timer is arranged " cool four sections and cool five periods of cool times ";
Step 3, starting characteristics test switch, temperature controller follow procedure performs intensification and the cooling operation of furnace body temperature, when experiment is accomplished to cooling three sections, chilling temperature has required lower than 600 DEG C, now expect that platform elevating mechanism is reduced to hearth base 301 bottom respectively automatically according to " cool four sections and cool five periods of cool times " that timer is arranged and stove external position is lowered the temperature, after time to be cooled all completes, control system can point out test all to complete;
Step 4, open fire door, close burner hearth bottom flame shield 303, takes down sample from feeding table 203, namely completes once complete experiment process, continues, by above-mentioned steps, to fill new sample, and test repeats.
The utility model utilizes many samples of iron ore sintering hot properties pick-up unit, multi-functional feature, for detecting above-mentioned each iron ore sintering hot properties index, realizes the function of iron ore sintering hot properties efficient detection.Pick-up unit maximum temperature of the present utility model can reach 1600 DEG C, the flat-temperature zone temperature difference≤± 1 DEG C, and there is quick liter, cooling function, furnace atmosphere regulatory function, sample visual function in stove, with parallel sample multiple under operating mode measuring ability simultaneously, this pick-up unit cost only has 1/4 of infrared heating heating furnace, but detection efficiency is higher than infrared heating heating furnace, once can detect multiple sample, and energy simulate industry sintering process, when adopting this device to detect, testing result representativeness is good, reappearance is high, drastically increase the detection efficiency of iron ore sintering hot properties.
Schematically above be described the utility model and embodiment thereof, this description does not have restricted, and also just one of the embodiment of the present utility model shown in accompanying drawing, actual structure is not limited thereto.So, if those of ordinary skill in the art enlightens by it, when not departing from the utility model and creating aim, design the frame mode similar to this technical scheme and embodiment without creationary, protection domain of the present utility model all should be belonged to.
Claims (8)
1. an iron ore sintering hot properties pick-up unit, comprise body of heater, the burner hearth (3) be arranged in upper of furnace body, feed mechanism (2), heating element (305) and exhaust system, it is characterized in that: in described burner hearth (3), be provided with heating element (305), burner hearth (3) bottom is provided with hearth base (301), and hearth base (301) offers charging hole (304); Loading chamber is provided with in the middle part of described body of heater, fire door is offered in loading chamber side, described feed mechanism (2) upper end is positioned at loading chamber, and the upper sample to be tested placed of feed mechanism (2) passes and sends into heating in burner hearth (3) from charging hole (304).
2. a kind of iron ore sintering hot properties pick-up unit according to claim 1, it is characterized in that: described heating element (305) is U-shaped structure, and straight-line segment (3051) diameter of heating element (305) is greater than the diameter of bending segment (3052), bending segment (3052) diameter d≤4mm, heating element (305) its center is apart from 20mm≤D≤25mm.
3. a kind of iron ore sintering hot properties pick-up unit according to claim 1, is characterized in that: described burner hearth (3) top offers viewport, is provided with camera head (4) in viewport.
4. a kind of iron ore sintering hot properties pick-up unit according to claim 1, it is characterized in that: described feed mechanism (2) comprises elevating mechanism, supporting seat (201) and feeding table (203), feeding table (203) for placing sample is fixed on the upper position relative with charging hole (304) of supporting seat (201), and elevating mechanism is arranged on supporting seat (201) below and controls supporting seat (201) and moves up and down.
5. a kind of iron ore sintering hot properties pick-up unit according to any one of Claims 1-4, it is characterized in that: lower surface and burner hearth (3) sidewall of described hearth base (301) surround groove (302), charging hole (304) is communicated with groove (302), the supporting seat (201) in feed mechanism (2) is provided with the base boss (202) matched with groove (302).
6. a kind of iron ore sintering hot properties pick-up unit according to claim 5, it is characterized in that: be hinged with flame shield (303) along body of heater length direction, this flame shield (303) rotates blocks charging hole (304) to matching with groove (302) during horizontal level.
7. a kind of iron ore sintering hot properties pick-up unit according to claim 6, it is characterized in that: described feed mechanism (2) comprises stepper motor (204), screw mandrel (205) and backstay (206), described backstay (206) is fixedly connected with supporting seat (201) and limits supporting seat (201) and rock, screw mandrel (205) is flexibly connected with supporting seat (201), stepper motor (204) drives screw mandrel (205) to rotate, and then drives supporting seat (201) to move up and down.
8. a kind of iron ore sintering hot properties pick-up unit according to claim 7, it is characterized in that: this pick-up unit also comprises the control box (1) of cooling system and the bottom of furnace body being located at burner hearth (3) periphery, at control box (1) built with attemperating unit.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201520660544.0U CN204882420U (en) | 2015-08-27 | 2015-08-27 | Iron ore sintering hot properties detection device |
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| CN201520660544.0U CN204882420U (en) | 2015-08-27 | 2015-08-27 | Iron ore sintering hot properties detection device |
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| CN204882420U true CN204882420U (en) | 2015-12-16 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105067657A (en) * | 2015-08-27 | 2015-11-18 | 马鞍山钢铁股份有限公司 | Iron ore sintering high-temperature characteristic detection device and detection method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105067657A (en) * | 2015-08-27 | 2015-11-18 | 马鞍山钢铁股份有限公司 | Iron ore sintering high-temperature characteristic detection device and detection method thereof |
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