CN208121168U - A kind of iron ore roasting magnetizing equipment - Google Patents
A kind of iron ore roasting magnetizing equipment Download PDFInfo
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- CN208121168U CN208121168U CN201820666513.XU CN201820666513U CN208121168U CN 208121168 U CN208121168 U CN 208121168U CN 201820666513 U CN201820666513 U CN 201820666513U CN 208121168 U CN208121168 U CN 208121168U
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Abstract
The utility model relates to the roasting magnetization technology fields of iron ore, for a kind of iron ore roasting magnetizing equipment, mainly it is made of feed system, gas handling system, discharging system, insulating cover and circulating cooling system, heating zone, reaction zone, cooling zone are successively arranged in insulating cover from top to bottom, coal dust inlet valve, Iron Ore Powder inlet valve are connected to mineral material powder stirrer, mineral material powder stirrer is connected to hot zone cap feed inlet, gas inlet valve, air inlet valve are connected to mixing blower, are communicated to weak magnetic separator outside mineral feed powder collector；Gas inlet valve is communicated to outside bottom exhaust gas drainage tube in insulating cover.The utility model, realize that nonmagnetic iron ore such as bloodstone, limonite, siderite etc. is rapidly converted into the iron ore that is magnetic, the concentrate grade for improving iron ore reaches 65% or more, and the rate of recovery reaches 90% or more, so that the utilization rate of iron ore resource be greatly improved.
Description
Technical field
The utility model relates to the roasting magnetization technology field of iron ore, specially a kind of iron ore roasting magnetizing equipment.
Background technique
Roasting magnetized principle all is the Fe made in iron mineral2O3Or FeCO3Under high ambient conditions and in mixed gas
H, O and CO generate chemical reaction, generate magnetic iron mineral Fe3O4, it is converted to refractory iron ore object and easily selects iron mineral, from
And improve the utilization efficiency of iron ore resource.Roasting reduction chemical equation：
Bloodstone, limonite：
Siderite：
In the prior art, Mineral Processing Enterprises mainly roast magnetic using rotary kiln baking magnetization technology and floated Flash Smelting Furnace
Change technology.Both equipment and technology all Shortcomings.
For rotary kiln since iron ore material size is thick (about 75mm-20mm), calcining time is long (about 1-3h), H, O when reaction
It cannot be penetrated into inside ore particle completely with CO, cause reaction incomplete；Due to the bad control of end flue temperature, often because of high temperature
(1100 DEG C or more) bond nonmetalloid dissolution in material with iron ore again, and forming ring formation and ore particle can not dissociate again
Choosing；Since the reduction reaction and oxidation reaction of (570 DEG C or more) iron ore under high ambient conditions are reversible, and rotary kiln
There is no other devices to make the iron ore material reacted and air exclusion after having crossed burner, keeps the iron ore grain for just reacting completion sudden and violent
Dew in air, and generates rapidly Fe in conjunction with the O in air2O3, cause the iron ore grain magnetic susceptibility of rotary kiln baking not high, return
Yield is not high, and energy consumption is also high.
Floated Flash Smelting Furnace is that coal is first generated to water-gas after-blow and is fired to combustion chamber by the way that iron mineral is worn into dry powder in advance
It burns, generates high-temperature mixed gas, form high temperature, high pressure mixed gas under the action of high pressure blower, drive iron mineral dry powder
It suspends and raises up in reaction tube, Fe during suspension raises up in Iron Ore Powder2O3Or FeCO3With H, O in high-temperature mixed gas
Chemical reaction is generated with CO, generates magnetic iron mineral Fe3O4.Although floated Flash Smelting Furnace has well solved rotary kiln anti-
Should not exclusively, back reaction the problems such as, but it is high to construct complicated, disposable investment big (at least 50,000,000 yuan or more), energy consumption
(combustion reaction and reduction reaction segmentation carry out, and heat loss is big；Overcome gravity that mineral material raises up 10m or more), so it is more
Year promotes not open always.
Utility model content
The purpose of this utility model is to provide a kind of iron ore roasting magnetizing equipments, to solve to mention in above-mentioned background technique
Out the problem of.
To achieve the above object, the utility model provides the following technical solutions：
A kind of iron ore roasting magnetizing equipment, mainly by feed system, gas handling system, discharging system, insulating cover and
Circulating cooling system composition, wherein feed system includes coal dust inlet valve, Iron Ore Powder inlet valve, mineral material powder stirrer, air inlet
System includes gas inlet valve, air inlet valve, mixing blower, and discharging system includes mineral feed powder collector, exhaust gas drainage
It manages, is successively arranged heating zone, reaction zone, cooling zone, coal dust inlet valve, Iron Ore Powder inlet valve and mine from top to bottom in insulating cover
The connection of material powder stirrer, mineral material powder stirrer is connected to hot zone cap feed inlet, gas inlet valve, air inlet valve and
Mixing blower connection, mixing blower air outlet are connected to hot zone cap air inlet, and spiral heating face is equipped in heating zone
Plate；Spiral staggered floor panel is equipped in reaction zone；Spiral cooling surface plate is equipped in cooling zone；The spiral staggered floor panel respectively with spiral shell
It is connected to revolve heating panel, spiral cooling surface plate, bottom is equipped with mineral feed powder collector in insulating cover, and mineral feed powder is received
Weak magnetic separator is communicated to outside storage；Gas inlet valve is communicated to outside bottom exhaust gas drainage tube in insulating cover.
Preferably, the spiral heating panel of heating zone includes spiral panel, and several groups are inlayed in the spiral panel in M shape
The high temperature resistance silk of distribution, the temperature resistance wire external power supply and temperature controller.
Preferably, the spiral staggered floor panel of reaction zone presses 30 °~90 ° staggered floor assembly by spiral panel, it is formed with 10~
Several tomographies of 15cm drop.
Preferably, the spiral cooling surface plate of cooling zone includes spiral panel, and several groups are inlayed in the spiral panel in M shape
The water inlet of the heat dissipation pipe of distribution, heat dissipation pipe are communicated to high-pressure hydraulic pump, high-pressure hydraulic pump water inlet by cooling zone water inlet pipe
It is communicated to radiator, water inlet of radiator is connect by cooling zone outlet pipe with heat dissipation pipe, and closed circulation cooling system is formed.
Preferably, coal dust inlet valve, Iron Ore Powder inlet valve connect controller by electronic sensor.
Preferably, gas inlet valve, air inlet valve connect controller by electronic sensor.
Preferably, several high-frequency vibrations are installed at spiral heating panel, spiral staggered floor panel, the spiral cooling surface plate back side
Device.
Compared with prior art, the utility model has the beneficial effects that：
(1) it should may be implemented to be previously required to huge investment and very big place with the place of seldom investment and very little solve
Iron ore roasting certainly magnetizes problem.
(2) due to being integrated with electronic induction, controller (system), the gas for participating in reacting, coal, iron ore is made all to be able to essence
It really launches, reduces the discharge of pollutant.
(3) it due to being to generate heat self using the movement of gravity nature and composite ore material of mineral material, greatly drops
Low energy consumption, reduces by 60% or more energy consumption than traditional rotary kiln, reduces by 30% or more energy consumption than floated Flash Smelting Furnace.
(4) conversion of the nonmagnetic iron ore to the iron ore that is magnetic is achieved that with less investment and energy consumption, make China
A large amount of refractory iron ore (such as bloodstone, limonite, siderite) becomes good choosing easily choosing, and China's iron ore can be greatly improved
The utilization efficiency of stone resource has strategic economic value meaning.
Detailed description of the invention
Fig. 1 is the iron ore roasting magnetizing equipment schematic diagram of the utility model；
Fig. 2 is the spiral panel resistance wire schematic wiring diagram that the heating zone of the utility model adds；
Fig. 3 is cooling zone spiral panel heat dissipation pipe's schematic wiring diagram of the utility model.
In figure：1 coal dust inlet valve, 2 Iron Ore Powder inlet valves, 3 mineral material powder stirrers, 4 gas inlet valves, 5 air inlets
Valve, 6 mixing blowers, 7 insulating covers, 8 heating zones, 9 spiral heating panels, 10 reaction zones, 11 spiral staggered floor panels, 12 coolings
Area, 13 spiral cooling surface plates, 14 mineral feed powder collectors, 15 exhaust gas drainage tubes, 16 cooling zone water inlet pipes, the water outlet of 17 cooling zones
Pipe, 18 radiators, 19 high-pressure hydraulic pumps.
Specific embodiment
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work
Every other embodiment obtained, fall within the protection scope of the utility model.
Fig. 1~3 are please referred to, the utility model provides a kind of technical solution：
Non-magnetic iron ore, coal are dry grinded respectively to 160~200 mesh in advance, according to the iron ore of measured in advance chemistry
Reacting dose and specific heat capacity are uniformly mixed by the inlet amount of parameters adjusting control coal dust and Iron Ore Powder and are formed composite ore material after mixing
Powder；Heating in the dispensing to the spiral heating panel 9 of heating zone 8 of mixed mineral feed powder, coal dust releases during being heated
H2O、O2、H2Equal gases are added in mixed gas；When coal dust is heated to 300 DEG C or more, coal dust is ignited, the C in coal dust
Oxidation reaction is generated with the O in mixed gas, generates CO, CO2Gas, while the heat that C burning releases is mixed mineral material
In Iron Ore Powder absorb, so that the temperature of Iron Ore Powder is quickly risen to 570 DEG C or more (Fe in Iron Ore Powder2O3Occur needed for reduction reaction
Hot conditions)；High temperature mixed mineral feed powder continues the spiral staggered floor face that reaction zone 10 is moved downwardly into along spiral panel
It on plate 11, is shaken loose by the free falling of waterfall type several times, makes the Fe in Iron Ore Powder2O3It is abundant with H, O and CO in mixed gas
Reduction reaction occurs for contact, generates Fe3O4And H2O；Be completed reduction reaction mixed mineral feed powder continue along spiral panel to
Under be manoeuvred into the spiral cooling surface plate 13 of cooling zone 12, so that Iron Ore Powder temperature is rapidly dropped to 570 DEG C hereinafter, Iron Ore Powder
Middle Fe3O4It is completely fixed after being cooled down and back reaction does not occur；Mixed mineral feed powder (mainly Fe3O4) through mineral feed powder collector
It is transported on weak magnetic separator after 14 collections and carries out magnetic separation；Synchronous progress is by adjusting gas inlet valve 4 and air inlet valve 5
Air inflow is controlled, enters heating zone 8 after mixing blower 6 pressurizes into mixed gas, it is reverse downwards along heating coil panel
Be heated in flow process, oxidation chemistry reaction first occurs for the C in O and composite ore material in mixed gas, generate containing CO and
CO2Mixed gas, and continue along spiral panel to flow down to reaction zone 10, with the Fe in mixed mineral feed powder2O3Occur also
Original chemical reaction, generates Fe3O4And H2O；Mixed gas becomes exhaust gas after completing reaction, enters after cooling zone 12 cools down
Exhaust gas drainage tube 15 flows back into air entrance end and is used again.
A kind of iron ore roasting magnetizing equipment, mainly by feed system, gas handling system, discharging system, insulating cover 7 and
Circulating cooling system composition, wherein feed system includes coal dust inlet valve 1, Iron Ore Powder inlet valve 2, mineral material powder stirrer 3,
Gas handling system includes gas inlet valve 4, air inlet valve 5, mixing blower 6, discharging system include mineral feed powder collector 14,
Exhaust gas drainage tube 15 is successively arranged heating zone 8, reaction zone 10, cooling zone 12, coal dust inlet valve in insulating cover 7 from top to bottom
1, Iron Ore Powder inlet valve 2 is connected to mineral material powder stirrer 3, and mineral material powder stirrer 3 is connected to 8 top feed mouth of heating zone,
Gas inlet valve 4, air inlet valve 5 are connected to mixing blower 6,6 air outlet of mixing blower and 8 top air inlet of heating zone
Connection, heating zone 8 is interior to be equipped with spiral heating panel 9；Spiral staggered floor panel 11 is equipped in reaction zone 10；Spiral shell is equipped in cooling zone 12
Revolve cooling surface plate 13；The spiral staggered floor panel 11 is connected with spiral heating panel 9, spiral cooling surface plate 13 respectively, is located at and protects
Bottom is equipped with mineral feed powder collector 14 in warm outer cover 7, is communicated to weak magnetic separator outside mineral feed powder collector 14；Heat preservation is outer
Gas inlet valve 4 is communicated to outside bottom exhaust gas drainage tube 15 in cover 7.
The spiral heating panel 9 of heating zone 8 includes spiral panel, and several groups are inlayed in the spiral panel and are distributed in M shape
High temperature resistance silk, the temperature resistance wire external power supply and temperature controller.
The spiral staggered floor panel 11 of reaction zone 10 is assembled by 300~900 staggered floors by spiral panel, is formed with 10~15cm and falls
Several tomographies (such as Fig. 1 cuts 2 tomographies) of difference are in the spiral heating of uppermost tomography (spiral panel) and heating zone 8
Panel 9 connects, and the tomography (spiral panel) in the bottom is connect with the spiral cooling surface plate 13 in cooling zone 12, tomography quantity
It is flexibly set according to practical condition, such as uses 3~6 groups.
The spiral cooling surface plate 13 of cooling zone 12 includes spiral panel, and several groups are inlayed in the spiral panel in M shape point
The heat dissipation pipe of cloth, the water inlet of heat dissipation pipe are communicated to high-pressure hydraulic pump 19 by cooling zone water inlet pipe 17, high-pressure hydraulic pump 19 into
The mouth of a river is communicated to radiator 18, and 18 water inlet of radiator is connect by cooling zone outlet pipe 16 with heat dissipation pipe, forms closure and follows
Ring cooling system.
Coal dust inlet valve 1, Iron Ore Powder inlet valve 2 connect controller by electronic sensor.
Gas inlet valve 4, air inlet valve 5 connect controller by electronic sensor.
Several dithers are installed at spiral heating panel 9, spiral staggered floor panel 11,13 back side of spiral cooling surface plate,
Quantity is according to actual use situation setting.
Mixing blower 6 is connected with gas inlet valve 4, air inlet valve 5 to be placed at the top of equipment, realizes that air is reverse
Flowing.Air inflow is controlled by electronic sensor, iron ore (powder) is made to complete gas phase -- after solid phase reaction, because in mixed gas
O element is rare or does not have, and makes the Fe reduced3O4Oxidation reaction will not occur again for iron ore (powder) at Fe2O3。
Coal is both reactant and heating material.Coal, iron ore are dry grinded respectively to 160 mesh to 200 mesh, by electricity in advance
Sub- sensor controls coal dust inlet valve 1, Iron Ore Powder inlet valve 2, realizes that the accurate measurement of coal dust and Iron Ore Powder feeds intake, then through mineral
3 uniform mixing of feed powder blender, into the spiral panel in heating zone 8 on heat.
External heat (electric physical heating) is combined with self heated (chemical reaction generates heat), adequately utilizes the energy.Iron
The mixed material of miberal powder and coal (powder) is distributed on 8 inside spin heating panel 9 of heating zone, during moving down gradually
It is heated, until lighting the coal dust inside mixed material, coal dust firing releases C, H and CO gas, while rapidly transmitting heat
To the Iron Ore Powder mixed, the temperature of Iron Ore Powder is made to rise rapidly to required for reduction reaction 570 DEG C or more.
Spiral heating panel 9, spiral staggered floor panel 11, spiral cooling surface plate 13 are the spiral panel in insulating cover 7
It is divided into three areas：
1) heating zone 8：High temperature resistance silk is embedded in inside spiral panel in M shape point several groups, external power supply and temperature control
Instrument is heated the mixed material for entering heating zone and gas gradually during moving down on spiral panel, until by point
Heat is born after combustion self, provides energy for chemical reaction.
2) reaction zone 10：Spiral panel is pressed into 30 °~90 ° staggered floor assembly, is formed with several tomographies of 10~15cm drop,
Make high temperature Iron Ore Powder falling onto next layer of spiral panel in waterfall type from the spiral panel of upper layer, in drop event sufficiently
With in mixed gas O, H gas and CO gas contact, make the Fe of high temperature Iron Ore Powder2O3Or FeCO3With O, H in mixed gas
Chemical reaction, quick (10-20 seconds) generation Fe are generated with CO3O4And H2O。
3) cooling zone 12：It is inlaid into several groups water pipe in M shape in spiral panel, external high-pressure hydraulic pump 19 makes water flow high speed
Circulation, so that the high-temperature material for just having reacted completion on spiral panel be made to cool down rapidly, after making it below reaction temperature (570 DEG C with
Under) back reaction (oxidation reaction) would not occur, reach consolidation and roasts magnetized effect.
4) gas-solid body separation utilizes：Mineral feed powder collector 14 and exhaust gas drainage tube 15 are loaded onto device bottom, is made instead
The material that should be crossed is by carrying out magnetic separation in high speed water pipe drainage to (common) weak magnetic separator.The exhaust gas reacted is through exhaust gas drainage tube
15 a part flow back into intake valve, with H, O and CO content in mixed gas compounding.Most exhaust gas drains into miberal powder dryer,
To make full use of its waste heat.
The utility model, with seldom investment, within 1,000,000 yuan of a set of equipment, the place of very little, 150 ㎡ or so can be with
Realization is previously required to huge investment：A set of 3,000,000 yuan of rotary kiln or more, a set of 50,000,000 yuan of floated Flash Smelting Furnace or more, and very
Big place：Rotary kiln takes up an area 1000 ㎡ or more, floated Flash Smelting Furnace takes up an area 600 ㎡ or more, the iron ore roasting magnetic that just can solve
Change problem.
Due to being integrated with advanced electronic induction, control system, the gas for participating in reacting, coal, iron ore is made all to be able to essence
It really launches, reduces the discharge of pollutant.
Due to being to generate heat self using the movement of gravity nature and composite ore material of mineral material, greatly reduce
Energy consumption：60% or more energy consumption is reduced than traditional rotary kiln, reduces by 30% or more energy consumption than floated Flash Smelting Furnace.
Conversion of the nonmagnetic iron ore to the iron ore that is magnetic is achieved that with less investment and energy consumption, keeps China a large amount of
Refractory iron ore (such as bloodstone, limonite, siderite) become good choosing easily choosing, China's iron ore money can be greatly improved
The utilization efficiency in source has strategic economic value meaning.
The utility model passes through to by coal, iron ore fine grinding material, mixing blower 6 and gas inlet valve 4, air inlet
The cooperation of valve 5 carries out reverse air inlet, the spiral cloth heating of iron ore (powder), the rapid cooling of waterfall type gas-solid precursor reactant, anaerobic etc.
A series of technical matters realizes that nonmagnetic iron ore (bloodstone, limonite, siderite etc.) is rapidly converted into the iron ore that is magnetic
Stone substantially increases iron ore to increase substantially the concentrate grade (65% or more) and the rate of recovery (90% or more) of iron ore
The utilization rate of stone resource.
While there has been shown and described that the embodiments of the present invention, for the ordinary skill in the art,
It is understood that these embodiments can be carried out with a variety of variations in the case where not departing from the principles of the present invention and spirit, repaired
Change, replacement and variant, the scope of the utility model is defined by the appended claims and the equivalents thereof.
Claims (7)
1. a kind of iron ore roasting magnetizing equipment, which is characterized in that mainly by feed system, gas handling system, discharging system, heat preservation
Outer cover (7) and circulating cooling system composition, wherein feed system includes coal dust inlet valve (1), Iron Ore Powder inlet valve (2), mine
Material powder stirrer (3), gas handling system include gas inlet valve (4), air inlet valve (5), mixing blower (6), outlet system
System includes mineral feed powder collector (14), exhaust gas drainage tube (15), is successively arranged heating zone from top to bottom in insulating cover (7)
(8), reaction zone (10), cooling zone (12), coal dust inlet valve (1), Iron Ore Powder inlet valve (2) and mineral material powder stirrer (3) connect
Logical, mineral material powder stirrer (3) be connected to heating zone (8) top feed mouth, gas inlet valve (4), air inlet valve (5) and is mixed
Enraged blower (6) connection, mixing blower (6) air outlet are connected to air inlet at the top of heating zone (8), are equipped in heating zone (8)
Spiral heating panel (9)；Spiral staggered floor panel (11) is equipped in reaction zone (10)；Spiral cooling surface plate is equipped in cooling zone (12)
(13)；The spiral staggered floor panel (11) is connected with spiral heating panel (9), spiral cooling surface plate (13) respectively, is located at heat preservation
Outer cover (7) interior bottom is equipped with mineral feed powder collector (14), is communicated to weak magnetic separator outside mineral feed powder collector (14)；It protects
Gas inlet valve (4) are communicated to outside the warm interior bottom exhaust gas drainage tube (15) of outer cover (7).
2. a kind of iron ore roasting magnetizing equipment according to claim 1, it is characterised in that：The spiral of heating zone (8) adds
Hot panel (9) includes spiral panel, and the high temperature resistance silk that several groups are in the distribution of M shape, the temperature resistance are inlayed in the spiral panel
Silk external power supply and temperature controller.
3. a kind of iron ore roasting magnetizing equipment according to claim 1, it is characterised in that：The spiral of reaction zone (10) is wrong
Deck panels (11) are assembled by 300~900 staggered floors by spiral panel, are formed with several tomographies of 10~15cm drop.
4. a kind of iron ore roasting magnetizing equipment according to claim 1, it is characterised in that：The spiral of cooling zone (12) is cold
But panel (13) includes spiral panel, and the heat dissipation pipe that several groups are in the distribution of M shape is inlayed in the spiral panel, heat dissipation pipe's
Water inlet is communicated to high-pressure hydraulic pump (19) by cooling zone water inlet pipe (17), and high-pressure hydraulic pump (19) water inlet is communicated to radiator
(18), radiator (18) water inlet is connect by cooling zone outlet pipe (16) with heat dissipation pipe, forms closed circulation cooling system.
5. a kind of iron ore roasting magnetizing equipment according to claim 1, it is characterised in that：Coal dust inlet valve (1), iron ore
Powder inlet valve (2) connects controller by electronic sensor.
6. a kind of iron ore roasting magnetizing equipment according to claim 1, it is characterised in that：Gas inlet valve (4), air
Intake valve (5) connects controller by electronic sensor.
7. a kind of iron ore roasting magnetizing equipment described according to claim 1~any one of 6, it is characterised in that：Spiral adds
Several dithers are installed at hot panel (9), spiral staggered floor panel (11), spiral cooling surface plate (13) back side.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201820666513.XU CN208121168U (en) | 2018-05-07 | 2018-05-07 | A kind of iron ore roasting magnetizing equipment |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820666513.XU CN208121168U (en) | 2018-05-07 | 2018-05-07 | A kind of iron ore roasting magnetizing equipment |
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| CN208121168U true CN208121168U (en) | 2018-11-20 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108330273A (en) * | 2018-05-07 | 2018-07-27 | 段志松 | A kind of iron ore roasting Magnitizing method and equipment |
-
2018
- 2018-05-07 CN CN201820666513.XU patent/CN208121168U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108330273A (en) * | 2018-05-07 | 2018-07-27 | 段志松 | A kind of iron ore roasting Magnitizing method and equipment |
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