CN204298440U - Iron oxide ore magnetizing roast equipment - Google Patents
Iron oxide ore magnetizing roast equipment Download PDFInfo
- Publication number
- CN204298440U CN204298440U CN201420832660.1U CN201420832660U CN204298440U CN 204298440 U CN204298440 U CN 204298440U CN 201420832660 U CN201420832660 U CN 201420832660U CN 204298440 U CN204298440 U CN 204298440U
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- Prior art keywords
- cylindrical shell
- stay
- warm case
- heat
- burner
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Abstract
The utility model is a kind of iron oxide ore magnetizing roast equipment, comprises cylindrical shell, carrying roller, motor and burner, and the outside of cylindrical shell is provided with the stay-warm case of band heat-insulation layer; Barrel jacket is contained in the through hole of stay-warm case axial location, leaves gap between the outer wall of cylindrical shell and heat-insulation layer; Fastener is provided with between the two ends of stay-warm case and the cylinder body outer wall of correspondence position; Burner is at least provided with multiple burner, and the end of burner is all arranged in gap and points to cylinder body outer wall; Stay-warm case is provided with flue; Cylindrical shell and stay-warm case are all obliquely installed on the ground.In the utility model cylindrical shell, the exclusive source of oxygen is that material carries when entering, and can ensure to be always stable reducing atmosphere in cylindrical shell.The burner that at least two or more is evenly distributed is set, can heats cylindrical shell whole implementation, realize being uniformly distributed and strengthening heat insulation effect of temperature.Stay-warm case is arranged on the outside of cylindrical shell and leaves by the gap of shutoff, can strengthen the heat insulation effect in cylindrical shell, effectively reduce thermal losses.
Description
Technical field
The utility model relates to a kind of mining machinery, is specially a kind of equipment for ore smelting, particularly for a kind of iron oxide ore magnetizing roast equipment.
Background technology
At present, the equipment that iron oxide ore magnetizing roast adopts is generally rotary kiln.Rotary kiln comprises the rotatable cylindrical shell that two ends are supported by carrying roller; Be arranged on the burner on cylindrical shell, the flame point of burner is positioned at one end of cylindrical shell, and flame directly sprays into cylindrical shell combustion, with this heated material, material is reacted; One end of cylindrical shell is feeding mouth, and the other end is discharging opening, and be provided with in cylindrical shell and raise plate for what overturn material, the inwall of cylindrical shell is provided with the refractory brick for being incubated, and ensures that material has reaction temperature environment with this.
From the above, although existing rotary kiln can carry out magnetizing roast to iron oxide ore, but because vibrational power flow is unreasonable, so there is following problem: the reducing atmosphere that seal of rotary kiln is bad caused is unstable, and the heat insulation effect that is even and rotary kiln of the temperature distributing disproportionation in rotary kiln is bad.
The reducing atmosphere that poor sealing causes is unstable, reason is that the burner of existing rotary kiln directly injects flames in cylindrical shell, oxygen can be entered along with the burning of flame in cylindrical shell, and iron oxide ore magnetizing roast needs to carry out under reducing atmosphere, reducing atmosphere can balance out by the injection of oxygen.Again because oxygen enters the air-flow that cylindrical shell produces can form negative pressure, add the rotation of cylindrical shell itself, so reducing atmosphere is unstable.
Temperature distributing disproportionation is because cylindrical shell itself is longer, and flame point is only positioned at one end of cylindrical shell, the limited length of flame, and the temperature near flame is high, and the temperature away from flame is low, therefore causes temperature distributing disproportionation in cylindrical shell even.In addition, because cylindrical shell self rotates, in cylindrical shell, raise plate to the air flow method can upset during materials overturning in cylindrical shell, and then affect being uniformly distributed of temperature in cylindrical shell.
Heat insulation effect is bad is that and the length of cylindrical shell is long because flame point is only in one end of cylindrical shell equally, so the stroke of flame can not ensure to implement insulation to whole cylindrical shell, the flame place that is beyond one's reach only can realize being incubated by remaining temperature.Again because rotary kiln be inner barrel heating, in inner barrel using refractory brick as heat-insulation layer, energy is radiation from inside to outside, in radius heat radiation, have huge thermal losses, be also unfavorable for insulation.
Cause existing rotary kiln to the result occurring during iron oxide ore magnetizing roast that the reaction time is long, treating capacity is little, magnetic susceptibility is lower etc. and be unfavorable for producing by above-mentioned three problems.
It is because the key reaction of iron oxide ore magnetizing roast is reduction reaction that reaction time extends, and the oxidation reaction that oxygen produces of lasting injection in cylinder of rotary kiln and occurent reduction reaction major part are offset, thus causes the reaction time to extend.In addition the stroke due to flame is limited, makes high-temperature region shorter, causes reaction mass short in the high-temperature region time of staying, causes reaction time length, treating capacity reduction further.
Magnetic susceptibility is lower is because in iron oxide ore magnetizing roast process, and magnetization reaction needed has one section of temperature retention time to ensure magnetic susceptibility after pyroreaction terminates.And due to the heat insulation effect of existing rotary kiln bad, enough temperature retention times cannot be provided, therefore the roasting magnetic susceptibility of existing rotary kiln to iron oxide ore is lower.
Also there is the high problem of equipment cost in existing rotary kiln, this is because existing rotary kiln belongs to inner heating, need to set up special combustion chamber, thus make that equipment volume is large, corollary equipment is many, weight is large, corresponding transmission mechanism configuration requirement is high, so cost is high.
Utility model content
In view of this, the purpose of this utility model is to propose a kind of iron oxide ore magnetizing roast equipment, has that reducing atmosphere is stablized, a feature of uniformity of temperature profile and high insulating effect.
The utility model solves the technical scheme that its technical problem adopts: a kind of iron oxide ore magnetizing roast equipment, comprise the cylindrical shell that two ends are provided with feeding mouth and discharging opening, the inwall of cylindrical shell is evenly provided with lifting blade, support the carrying roller at cylindrical shell two ends, drive motor and the burner of cylindrical shell, it is characterized in that, the outside of cylindrical shell is provided with stay-warm case, the inwall of stay-warm case is provided with heat-insulation layer, is filled with heat-insulating fireproof material in heat-insulation layer, heat-insulation layer in the axial location of stay-warm case around a through hole; In through-holes, the two ends of stay-warm case are stretched out at the two ends of cylindrical shell to described cylindrical shell coaxial package, leave gap between the outer wall of cylindrical shell and heat-insulation layer, and cylindrical shell can rotate in stay-warm case; The fastener for gap described in shutoff is provided with between the two ends of stay-warm case and the cylinder body outer wall of correspondence position; Described burner is at least provided with plural burner, and burner is at equal intervals side by side through the outer wall of the heat-insulation layer sensing cylindrical shell of stay-warm case, and the end of each burner is all arranged in described gap; Stay-warm case is provided with flue, and one end of flue is communicated with the outside of stay-warm case, and the other end of flue is communicated with described gap; Described stay-warm case is fixed on the ground by riding, and cylindrical shell stretches out the two ends of stay-warm case by carrying roller inclined shore on the ground, and cylindrical shell is consistent with the angle of inclination of stay-warm case.
Further, described heat-insulation layer is made up of equally distributed incubator, and incubator is fixed on the inwall of stay-warm case, and heat-insulating fireproof material is filled in each incubator respectively.
Further, described heat-insulating fireproof material is that high temperature is cotton.
Further, the described fastener for plugging gap is labyrinth type fastener, comprise fixture and the revolving part of ring-type, wherein fixture passes cylindrical shell and mounts cover the two ends being fixed on stay-warm case, revolving part suit is fixed on on the cylinder body outer wall of stay-warm case end face correspondence position, the opposite face of described fixture and revolving part is provided with the teeth groove agreed with, and revolving part and fixture are engaged by teeth groove, and the teeth groove of revolving part can rotate in the teeth groove of fixture.
Further, described burner is equipped with air valve for each burner.
Further, the clearance distance between the outer wall of described cylindrical shell and heat-insulation layer is 3cm-5cm.
Further, the angle of inclination of described cylindrical shell and stay-warm case is 2 ° ± 0.5 °.
Further, described stay-warm case is cuboid or cylinder.
Further, the feeding mouth of described cylindrical shell is provided with pan feeding cover, and the top of pan feeding cover connects hopper, and pan feeding cover internal fixtion has a stock guide, and this stock guide oblique cutting enters in feeding mouth.
Further, described cylindrical shell is equipped with limit flitch in the end cover of feeding mouth, is provided with the circular hole that aperture is less than cylindrical shell feeding mouth in the middle of limit flitch.
Further, the discharging opening of described cylindrical shell is provided with discharge cover, and the lower end of discharge cover passes in water.
The beneficial effects of the utility model are, the exclusive source that in cylindrical shell, oxygen enters is that iron oxide ore and other reaction masses are entrained when entering, feeding mouth and the discharging opening of cylindrical shell are all connected with upper and lower process equipment and realize material and seal, and can ensure like this to be always stable reducing atmosphere in cylindrical shell.Burner arranges at least two or more burner, and burner heats the outer wall of cylindrical shell through stay-warm case at equal intervals side by side, can heat like this, realize being uniformly distributed and strengthening heat insulation effect of temperature to cylindrical shell whole implementation.The stay-warm case being provided with heat-insulation layer is arranged on the outside of cylindrical shell and leaves gap, and two ends, gap, by fastener shutoff, can strengthen the heat insulation effect in cylindrical shell like this, effectively reduce thermal losses.
Accompanying drawing explanation
Fig. 1 is front perspective view of the present utility model.
Fig. 2 is the top view of Fig. 1.
Fig. 3 is the A-A sectional view of Fig. 1.
Fig. 4 is the B place partial sectional view of Fig. 1.
In figure: 1, cylindrical shell, 2, stay-warm case, 3, burner, 4, flue, 5, gear wheel, 6, hopper, 7, feeding mouth, 8, pan feeding cover, 9, stock guide, 10, limit flitch, 11, motor, 12, pinion, 13, carrying roller, 14, support, 15, incubator, 16, discharge cover, 17, discharging opening, 18, heat-insulating fireproof material, 19, through hole, 20, lifting blade, 21, revolving part, 22, fixture, 23, burner.
Detailed description of the invention
In order to make those skilled in the art understand the technical solution of the utility model better, below in conjunction with the drawings and specific embodiments, the utility model is described in further detail.
As depicted in figs. 1 and 2, a kind of iron oxide ore magnetizing roast equipment, comprises cylindrical shell 1, carrying roller 13, motor 11 and burner 23.The two ends of cylindrical shell 1 are respectively equipped with feeding mouth 7 and discharging opening 17.The inwall of cylindrical shell 1 is evenly provided with lifting blade 20, and when cylindrical shell 1 rotates, lifting blade 20 can drive the reaction mass such as iron oxide ore in cylindrical shell 1 to overturn.Motor 11 is connected with cylindrical shell 1 with pinion 12 by the gear wheel 5 for transmission.Motor 11 rotates and then drives cylindrical shell 1 to rotate.Carrying roller 13 is arranged on the two ends of cylindrical shell 1, for the cylindrical shell 1 in support rotating.Burner 23 is heated, for the magnetizing roast of iron oxide ore provides reaction temperature by burner 3 pairs of cylindrical shells 1.
In the utility model, the outside of cylindrical shell 1 is provided with stay-warm case 2, and stay-warm case 2 can be cuboid or cylinder.The structure of stay-warm case 2, as shown in 1 and Fig. 3, the inwall of stay-warm case 2 is provided with heat-insulation layer, and heat-insulation layer is made up of the heat-insulating fireproof material 18 of filling.Heat-insulating fireproof material 18 can select the high temperature of flame-resistant high-temperature-resistant cotton.In order to be socketed on cylindrical shell 1, stay-warm case 2 has through hole 19 at shaft core position, this through hole 19 by heat-insulation layer around being formed.The aperture of through hole 19 is greater than the aperture of cylindrical shell 1.It should be noted that, fill firmly to make heat-insulating fireproof material 18, also conveniently local heat-insulating fireproof material 18 is changed simultaneously, so heat-insulation layer can be made up of equally distributed multiple incubator 15, incubator 15 close-packed arrays is also fixed on the inwall of stay-warm case 2, and heat-insulating fireproof material 18 is filled in each incubator 15 respectively.
As shown in figures 1 and 3, cylindrical shell 1 is socketed in the through hole 19 of stay-warm case 2, and the two ends of stay-warm case 2 are stretched out at the two ends of cylindrical shell 1, the dead in line of cylindrical shell 1 and through hole 19.Leave gap between the outer wall of cylindrical shell 1 and heat-insulation layer, the scope in gap is at 3cm-5cm.Cylindrical shell 1 can rotate in stay-warm case 2.In order to ensure the heat insulation effect of heat-insulation layer, between the two ends of stay-warm case 2 and cylindrical shell 1 outer wall of correspondence position, be provided with the fastener for this gap of shutoff.This fastener can not affect cylindrical shell 1 and rotate.As shown in Figure 3, fastener can adopt labyrinth type fastener, comprises fixture 22 and the revolving part 21 of ring-type.Wherein, fixture 22 mounts cover the two ends being fixed on stay-warm case 2, and cylindrical shell 1 passes from fixture 22.Revolving part 21 suit is fixed on the outer wall of cylindrical shell 1, and the position that revolving part 21 is fixed is corresponding with the position that stay-warm case 2 end face mounts cover fixture 22.Be provided with at the opposite face of fixture 22 and revolving part 21 teeth groove agreed with, revolving part 21 and fixture 22 are engaged by teeth groove.When cylindrical shell 1 rotates, the teeth groove of revolving part 21 can rotate in the teeth groove of fixture 22.
In the utility model, burner 23 arranges at least plural burner 3.As shown in figures 1 and 3, these burners 3 are arranged side by side at equal intervals, and each burner 3 all points to the outer wall of cylindrical shell 1 through the heat-insulation layer of stay-warm case 2, in the gap between cylindrical shell 1 outer wall and heat-insulation layer, the end of burner 3.In order to regulate temperature, burner 23 is equipped with air valve for each burner 3, regulates flame size, and then regulate temperature by regulating gas amount.The utility model also can be burner 23 and is equipped with automatic temperature control system, carrys out automatic regulating gas amount by design temperature.
As shown in Figure 1, stay-warm case 2 is provided with flue 4, one end of flue 4 is communicated with the outside of stay-warm case 2, the other end communication gap of flue 4.The axes normal of flue 4 and stay-warm case 2.
As shown in Figure 1, in order to make iron oxide ore and reaction mass after entering cylindrical shell 1, can react to discharging opening 17 landing.Therefore will cylindrical shell 1 two ends of stay-warm case 2 be stretched out by carrying roller 13 inclined shore on the ground.Stay-warm case 2 tilts to fix on the ground by support 14.Cylindrical shell 1 is consistent with the angle of inclination of stay-warm case 2, and scope is at 2 ° ± 0.5 °.
As shown in Figure 1, conveniently iron oxide ore enters cylindrical shell 1, therefore arranges a pan feeding cover 8 at the feeding mouth 7 of cylindrical shell 1.The top of pan feeding cover 8 connects hopper 6, pan feeding cover 8 internal fixtion stock guide 9, and this stock guide 9 tilts to inject in feeding mouth 7.In order to quantity iron oxide ore once being entered to cylindrical shell 1 controls, therefore in the end cover of the feeding mouth 7 of cylindrical shell 1, limit flitch 10 is housed, in the middle of limit flitch 10, is provided with the circular hole that aperture is less than cylindrical shell 1 feeding mouth 7.
In order to ensure the sealing of cylindrical shell 1 further, discharge cover 16 can be set at the discharging opening 17 of cylindrical shell 1, and the lower end of discharge cover 16 is passed in water.
The magnetizing roast of iron oxide ore needs to carry out under a reducing atmosphere, usually adopts bituminous coal as reducing agent.C and O in bituminous coal
2reaction generates CO and CO
2, C again and CO
2reaction generates CO.If the O in cylindrical shell 1
2too much, reducing atmosphere can be cancelled, and O of the present utility model
2source only exists when to enter cylindrical shell 1 from feeding mouth 7 with iron oxide ore and other reaction masses entrained, can make like this to remain reducing atmosphere in cylindrical shell 1.
Fe in iron oxide ore
2o
3fe is being reduced into by CO
3o
4process in require high temperature all the time, and to move to discharging opening 17 gradually, so require that the high-temperature area of cylindrical shell 1 is evenly distributed due to iron oxide ore.Multiple burner 3 is disposed side by side on the outside of cylindrical shell 1 by the utility model at equal intervals, and the flame of multiple hot spot can directly heat whole cylindrical shell 1, so just can ensure uniformity of temperature profile in cylindrical shell 1 and strengthen the heat insulation effect of cylindrical shell entirety.
Iron oxide ore is needed temperature to maintain when magnetizing further, this just requires effectively to be incubated cylindrical shell 1.Stay-warm case 2 with heat-insulation layer is arranged on the outside of cylindrical shell 1 by the utility model, leaves gap between heat-insulation layer and cylindrical shell 1, the two ends of stay-warm case 2 by fastener by gap shutoff.Such setting effectively can strengthen heat insulation effect, reduces thermal losses.
Claims (10)
1. an iron oxide ore magnetizing roast equipment, comprise the cylindrical shell that two ends are provided with feeding mouth and discharging opening, the inwall of cylindrical shell is evenly provided with lifting blade, support the carrying roller at cylindrical shell two ends, drive motor and the burner of cylindrical shell, it is characterized in that: the outside of cylindrical shell is provided with stay-warm case, the inwall of stay-warm case is provided with heat-insulation layer, be filled with heat-insulating fireproof material in heat-insulation layer, heat-insulation layer in the axial location of stay-warm case around a through hole; In through-holes, the two ends of stay-warm case are stretched out at the two ends of cylindrical shell to described cylindrical shell coaxial package, leave gap between the outer wall of cylindrical shell and heat-insulation layer, and cylindrical shell can rotate in stay-warm case; The fastener for gap described in shutoff is provided with between the two ends of stay-warm case and the cylinder body outer wall of correspondence position; Described burner is at least provided with plural burner, and burner is at equal intervals side by side through the outer wall of the heat-insulation layer sensing cylindrical shell of stay-warm case, and the end of each burner is all arranged in described gap; Stay-warm case is provided with flue, and one end of flue is communicated with the outside of stay-warm case, and the other end of flue is communicated with described gap; Described stay-warm case is fixed on the ground by riding, and cylindrical shell stretches out the two ends of stay-warm case by carrying roller inclined shore on the ground, and cylindrical shell is consistent with the angle of inclination of stay-warm case.
2. a kind of iron oxide ore magnetizing roast equipment as claimed in claim 1, it is characterized in that: described heat-insulation layer is made up of equally distributed incubator, incubator is fixed on the inwall of stay-warm case, and heat-insulating fireproof material is filled in each incubator respectively.
3. a kind of iron oxide ore magnetizing roast equipment as claimed in claim 1 or 2, is characterized in that: described heat-insulating fireproof material is that high temperature is cotton.
4. a kind of iron oxide ore magnetizing roast equipment as claimed in claim 1, it is characterized in that: the described fastener for plugging gap is labyrinth type fastener, comprise fixture and the revolving part of ring-type, wherein fixture passes cylindrical shell and mounts cover the two ends being fixed on stay-warm case, revolving part suit is fixed on on the cylinder body outer wall of stay-warm case end face correspondence position, the opposite face of described fixture and revolving part is provided with the teeth groove agreed with, revolving part and fixture are engaged by teeth groove, and the teeth groove of revolving part can rotate in the teeth groove of fixture.
5. a kind of iron oxide ore magnetizing roast equipment as claimed in claim 1, is characterized in that: described burner is equipped with air valve for each burner.
6. a kind of iron oxide ore magnetizing roast equipment as claimed in claim 1, is characterized in that: the clearance distance between the outer wall of described cylindrical shell and heat-insulation layer is 3cm-5cm.
7. a kind of iron oxide ore magnetizing roast equipment as claimed in claim 1, is characterized in that: the angle of inclination of described cylindrical shell and stay-warm case is 2 ° ± 0.5 °.
8. a kind of iron oxide ore magnetizing roast equipment as claimed in claim 1, is characterized in that: the feeding mouth of described cylindrical shell is provided with pan feeding cover, and the top of pan feeding cover connects hopper, and pan feeding cover internal fixtion has a stock guide, and this stock guide oblique cutting enters in feeding mouth.
9. a kind of iron oxide ore magnetizing roast equipment as described in claim 1 or 8, is characterized in that: described cylindrical shell is equipped with limit flitch in the end cover of feeding mouth, is provided with the circular hole that aperture is less than cylindrical shell feeding mouth in the middle of limit flitch.
10. a kind of iron oxide ore magnetizing roast equipment as described in claim 1 or 8, it is characterized in that: the discharging opening of described cylindrical shell is provided with discharge cover, the lower end of discharge cover passes in water.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420832660.1U CN204298440U (en) | 2014-12-10 | 2014-12-10 | Iron oxide ore magnetizing roast equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420832660.1U CN204298440U (en) | 2014-12-10 | 2014-12-10 | Iron oxide ore magnetizing roast equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204298440U true CN204298440U (en) | 2015-04-29 |
Family
ID=53103997
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420832660.1U Withdrawn - After Issue CN204298440U (en) | 2014-12-10 | 2014-12-10 | Iron oxide ore magnetizing roast equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204298440U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104593588A (en) * | 2014-12-10 | 2015-05-06 | 陕西大山机械有限公司 | Iron oxide ore magnetizing and roasting equipment |
-
2014
- 2014-12-10 CN CN201420832660.1U patent/CN204298440U/en not_active Withdrawn - After Issue
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104593588A (en) * | 2014-12-10 | 2015-05-06 | 陕西大山机械有限公司 | Iron oxide ore magnetizing and roasting equipment |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20150429 Effective date of abandoning: 20161012 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |