CN205679048U - A kind of coal-based direct reduction calcining kiln - Google Patents
A kind of coal-based direct reduction calcining kiln Download PDFInfo
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- CN205679048U CN205679048U CN201620582929.4U CN201620582929U CN205679048U CN 205679048 U CN205679048 U CN 205679048U CN 201620582929 U CN201620582929 U CN 201620582929U CN 205679048 U CN205679048 U CN 205679048U
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Abstract
A kind of coal-based direct reduction calcining kiln that this utility model provides belongs to lateritic nickel ore direct-reduction calcining kiln technical field, solve lateritic nickel ore reduction efficiency low, the problem that energy resource consumption is big, the technical scheme used is: coal-based direct reduction calcining kiln includes kiln body and roasting system, kiln body is hollow shell, in the middle part of kiln body roof, kiln body sunken inside is provided with preheating cloth pond, preheating bottom surface, cloth pond is provided with through hole, through described through hole and extend to kiln body bottom surface and be provided with blanking channel, forced air cooled tube it is provided with below blanking channel, guide impeller it is provided with below forced air cooled tube end, guide platform it is provided with below guide impeller, it is provided with hopper below guide platform, device for transporting objects it is provided with below hopper；Being provided with roasting system between described blanking channel, described roasting system is snakelike flue, and described flue vertical projection direction is from top to bottom disposed with roasting preheating section, baking heat section, roasting reduction section and insulation linkage section.
Description
Technical field
This utility model belongs to lateritic nickel ore direct-reduction calcining kiln technical field, particularly relates to a kind of coal base directly also
Former calcining kiln.
Background technology
In recent years, nickel is widely used at numerous areas such as steel and iron industry, magnetic industry, battery and health cares, therefore
Nickel obtains the concern of increasing experts and scholars, at present, in the non-ferrous metal of the whole world, the consumption figure of nickel be only second to copper, aluminum, lead,
Zinc, occupies the 5th, and therefore nickel is also regarded as important strategic materials, is paid attention to by various countries.
Under normal circumstances the lateritic nickel ore of nickeliferous more than 2% being called high-grade nickel minerals, the lateritic nickel ore of nickeliferous less than 2% claims
For low grade nickel ore.Domestic lateritic nickel ore scarcity of resources, needs to introduce raw ore from abroad, and the raw ore that China buys is the most nickeliferous
The amount low grade nickel ore less than 2%.In the case of and high-grade nickel ore resources scarcity in great shortage at nickel resources, to low-grade laterite nickel
The exploitation in ore deposit have important strategic importance.
The traditional handicraft processing nickel ore is pyrometallurgical smelting dilval, and this technique mainly processes the change that nickel grade is higher
Matter peridotite, is divided into rotary kiln prereduction and reduction shaft furnace electric furnace refining purifying method according to the difference of reducing process, but
The two is both needed to dilval by just reducing after auxiliary agent plasmid, does not constitute the abundant of lateritic nickel ore and reducing gas
Reduction atmosphere, reduces the reduction efficiency of lateritic nickel ore；On the other hand, reduction apparatus heats connecing of reduction section and lateritic nickel ore
Contacting surface is long-pending less, needs heating for a long time, causes the waste of the energy.
Utility model content
This utility model overcomes the deficiency that prior art exists, solve lateritic nickel ore reduction efficiency in prior art low,
Kiln bringing-up section length heat time heating time, heating-up temperature for reduction are high, the problem of heat insulation effect difference, it is desirable to provide a kind of coal base is direct
Reduction roasting kiln, this coal-based direct reduction calcining kiln is not only without briquetting, and lateritic nickel ore powder can directly reduce, increase
Lateritic nickel ore and the contact area of reducing gases, increase the reduction efficiency of lateritic nickel ore, on the other hand setting by snakelike flue
Meter, reduces the consumption of energy in reduction process.
For solving above-mentioned technical problem, the technical solution adopted in the utility model is: a kind of coal-based direct reduction calcining kiln,
It includes kiln body and roasting system, wherein: kiln body is hollow shell, is hollowly provided with pre-in the middle part of kiln body roof inside kiln body
Hot cloth pond, preheating cloth pond is provided above movable charge machine, and preheating bottom surface, cloth pond is evenly arranged with some through holes, wears
Cross described through hole and extend to kiln body bottom surface and be provided with blanking channel, below blanking channel, being provided with forced air cooled tube, forced air cooled tube end
Lower section is provided with guide impeller, is provided with guide platform, is provided with hopper, hopper below described guide platform below guide impeller
Lower section is provided with device for transporting objects；
Being provided with roasting system between described blanking channel, described roasting system is snakelike flue, and described flue is vertically thrown
Shadow direction is from top to bottom disposed with roasting preheating section, baking heat section, roasting reduction section and insulation linkage section；
Being provided with support beam below described flue and between kiln body bottom surface, described kiln body subjacent is provided with gasket ring, institute
State and between gasket ring and ground, be provided with support.
Further, above the baking heat section that preheating cloth pond bottom surface is supported in flue by support ring.
Further, described preheating cloth pond bottom surface material is steel plate.
Further, described flue lower end connects heating chamber, and described bottom of heating chamber is provided with fire nozzle, and heating room side wall is arranged
There is flame-observing hole, the heating room side wall above flame-observing hole is provided with device for detecting temperature.
Further, being provided with dividing plate between described roasting reduction section and baking heat section, described dividing plate end is to roasting also
It is provided with flange in former section.
Further, described baking heat section sidewall is provided with gas overflow mouth after reduction.
Further, after described reduction, gas overflow mouth connects with the roasting section of heating.
Further, run through described roasting reduction section sidewall and kiln body sidewall is provided with device for detecting temperature.
Further, dividing plate, described dividing plate end baking heat it are provided with between described baking heat section and roasting preheating section
It is symmetrically arranged with flange in section and roasting preheating section.
Further, described kiln body sidewall and preheating cloth pond between and kiln body sidewall and roasting system between the company of being provided with
Logical thermal-insulating sealing gap.
This utility model is compared with prior art and is had the beneficial effect that
1, in this utility model, guide impeller slowly rotates, and flue vertical projection direction is from top to bottom disposed with roasting
Preheating section, baking heat section, roasting reduction section and insulation linkage section, lateritic nickel ore slowly falls into rear zone heating from charging aperture
Reduction roasting, lateritic nickel ore bonds briquetting without auxiliary agent, increases reducing gas and lateritic nickel ore and reducing gases contact area, pole
The earth improves heat exchanger effectiveness and heat utilization rate, meanwhile, reduces the energy that flue heating reducing roasting process is caused
Consuming, compared with existing domestic and international rotary kiln baking, have flexible, practical, efficient energy-saving, not ring formation, flow process is short, relatively throws
Providing little, the advantage such as constant product quality, as direct-reduction roasting apparatus, wide market, it is easy to promote, due to comprehensive energy
/ 3rd of other techniques that consumption is not enough, development potentiality is huge, particularly develops lateritic nickel ore resource high-efficiency and will produce
Actively impact.
2, being provided with dividing plate in flue between roasting reduction section and baking heat section, described dividing plate end is to roasting reduction section
Inside it is provided with flange；Dividing plate, described dividing plate end baking heat section and roasting it is provided with between baking heat section and roasting preheating section
It is symmetrically arranged with flange in burning preheating section, the temperature of each section has been effectively ensured.
3, this utility model is to temperature, reducing gases concentration and the recovery time needed for lateritic nickel ore direct-reduction roasting process
Control respectively, interact between the most every control parameter relatively weak, and can control at laterite the most in phase
In the range of efficiently reduction atmosphere needed for nickel minerals reduction process.
4, without washing after lateritic nickel ore has reduced, it is directly to be cooled down by natural air cooled pipe, it is to avoid red
This oxidation again of soil nickel minerals.
Accompanying drawing explanation
The utility model is described in more detail below in conjunction with the accompanying drawings.
Fig. 1 is the main cross-sectional schematic of this utility model overall structure.
Fig. 2 is A-A face cross-sectional schematic in Fig. 1.
In figure: 1 is kiln body, 2 is preheating cloth pond, and 3 is charging aperture, and 4 is roasting preheating section, and 5 is baking heat section, and 6 are
Roasting reduction section, 7 is insulation linkage section, and 8 is hopper, and 9 is conveyer device, and 10 is thermal-insulating sealing gap, and 11 is support beam, and 12 are
Gasket ring, 13 is forced air cooled tube, and 14 is guide impeller, and 15 is guide platform, and 16 is support, and 17 is movable charge machine, and 18 is flue,
19 is device for detecting temperature, and 20 is flame-observing hole, and 21 is fire nozzle, and 22 is gas overflow mouth after reduction.
Detailed description of the invention
Understandable, below in conjunction with the accompanying drawings to this practicality for enabling the purpose of this utility model, feature and advantage to become apparent from
Novel detailed description of the invention is described in detail.
As shown in Fig. 1 ~ Fig. 2, a 1. coal-based direct reduction calcining kiln, it includes kiln body 1 and roasting system, and its feature exists
In: kiln body 1 is hollow shell, is hollowly provided with preheating cloth pond 2, preheats cloth pond in the middle part of kiln body 1 roof inside kiln body 1
2 are provided above movable charge machine 17, and preheating bottom surface, cloth pond 2 is evenly arranged with some through holes, through described through hole and prolong
Extend kiln body 1 bottom surface and be provided with blanking channel 3, below blanking channel 3, be provided with forced air cooled tube 13, arrange below forced air cooled tube 13 end
There is guide impeller 14, below guide impeller 14, be provided with guide platform 15, below described guide platform 15, be provided with hopper 8, material
Device for transporting objects 9 it is provided with below bucket；Being provided with roasting system between described blanking channel 3, described roasting system is snakelike
Flue 18, described flue 18 vertical projection direction is from top to bottom disposed with roasting preheating section 4, baking heat section 5, roasting also
Former section 6 and insulation linkage section 7；Support beam 11, described kiln body 1 bottom surface it is provided with below described flue 18 and between kiln body 1 bottom surface
Lower section is provided with gasket ring 12, is provided with support 16 between described gasket ring 12 and ground.
Further, above the baking heat section 5 that preheating cloth pond 2 bottom surface is supported in flue 18 by support ring.
Further, described preheating cloth pond 2 bottom surface material is steel plate.
Further, described flue 18 lower end connects heating chamber, and described bottom of heating chamber is provided with fire nozzle 21, heating room side wall
It is provided with flame-observing hole 20, the heating room side wall above flame-observing hole 20 is provided with device for detecting temperature 19.
Further, being provided with dividing plate between described roasting reduction section 6 and baking heat section 5, described dividing plate end is to roasting
It is provided with flange in reduction section 6.
Further, described baking heat section 5 sidewall is provided with gas overflow mouth 22 after reduction.
Further, after described reduction, gas overflow mouth 22 connects with baking heat section 5, makes the flue gas restored to enter
Enter to the section of heating, directly heat after mixing with original flue gas.
Further, run through described roasting reduction section 6 sidewall and kiln body 1 sidewall is provided with device for detecting temperature 19.
Further, being provided with dividing plate between described baking heat section 5 and roasting preheating section 4, described dividing plate end roasting adds
It is symmetrically arranged with flange in hot arc 5 and roasting preheating section 4.
Further, arrange between described kiln body 1 sidewall and preheating cloth pond 2 and between kiln body 1 sidewall and roasting system
There is the thermal-insulating sealing gap 10 of connection.
During use, first, it is laid in after lateritic nickel ore being sufficiently mixed uniformly in preheating cloth pond 2, lateritic nickel ore
In preheating cloth pond 2, ulking thickness is 150 ~ 200mm, starts fire nozzle 21, and in flue 18, each section of temperature is filled by temperature monitoring
Put 19, wait that each section reaches temperature required；Secondly, lateritic nickel ore slowly sequentially passes through flue under the control action of guide impeller
18 vertical projection directions are from top to bottom disposed with roasting preheating section 4, baking heat section 5, roasting reduction section 6 and insulation and connect
Section 7, lateritic nickel ore obtain sufficient reduction roasting laggard enter forced air cooled tube 13, forced air cooled tube 13 is steel pipe, high 2m, be reduced directly roasting
Material is cooled to be about 50 DEG C with the ferronickel powder temperature of inevitable impurity through forced air cooled tube 13；Again, air-cooled rear roasting
Material through guide platform 15, falls in the hopper 8 below guide platform 15 under the control action of guide impeller 14；Finally, also
Former rear roasting material is carried out outside kiln body through device for transporting objects 9, through three grades of magnetic separation processes after roasting material transport to kiln is outer, obtains
The finished product ferronickel powder of nickeliferous 6% ~ 28%.
Above in conjunction with accompanying drawing, embodiment of the present utility model is explained in detail, but on this utility model is not limited to
State embodiment, in the ken that those of ordinary skill in the art are possessed, it is also possible to without departing from this utility model objective
On the premise of various changes can be made.
Claims (10)
1. a coal-based direct reduction calcining kiln, it includes kiln body (1) and roasting system, it is characterised in that:
Kiln body (1) is hollow shell, is hollowly provided with preheating cloth pond (2) to kiln body (1) inner side in the middle part of kiln body (1) roof,
Preheating cloth pond (2) is provided above movable charge machine (17), and preheating cloth pond (2) bottom surface is evenly arranged with some through holes,
Through described through hole and extend to kiln body (1) bottom surface and be provided with blanking channel (3), blanking channel (3) lower section is provided with forced air cooled tube
(13), being provided with guide impeller (14) below forced air cooled tube (13) end, guide impeller (14) lower section is provided with guide platform (15),
Described guide platform (15) lower section is provided with hopper (8), is provided with device for transporting objects (9) below hopper；
Being provided with roasting system between described blanking channel (3), described roasting system is snakelike flue (18), described flue (18)
Vertical projection direction is from top to bottom disposed with roasting preheating section (4), baking heat section (5), roasting reduction section (6) and insulation
Linkage section (7)；
Being provided with support beam (11) between described flue (18) lower section and kiln body (1) bottom surface, described kiln body (1) subjacent is arranged
There is gasket ring (12), between described gasket ring (12) and ground, be provided with support (16).
A kind of coal-based direct reduction calcining kiln the most according to claim 1, it is characterised in that: preheating cloth pond (2) is gone to the bottom
Baking heat section (5) top that face is supported in flue (18) by support ring.
A kind of coal-based direct reduction calcining kiln the most according to claim 1, it is characterised in that: described preheating cloth pond (2)
Bottom surface material is steel plate.
A kind of coal-based direct reduction calcining kiln the most according to claim 1, it is characterised in that: described flue (18) lower end is even
Connecing heating chamber, described bottom of heating chamber is provided with fire nozzle (21), and heating room side wall is provided with flame-observing hole (20), in flame-observing hole (20)
It is provided with device for detecting temperature (19) on the heating room side wall of top.
A kind of coal-based direct reduction calcining kiln the most according to claim 1, it is characterised in that: described roasting reduction section (6)
And being provided with dividing plate between baking heat section (5), described dividing plate end is provided with flange in roasting reduction section (6).
A kind of coal-based direct reduction calcining kiln the most according to claim 5, it is characterised in that: run through described roasting reduction section
(6) sidewall and kiln body (1) sidewall are provided with device for detecting temperature (19).
A kind of coal-based direct reduction calcining kiln the most according to claim 5, it is characterised in that: described baking heat section (5)
Sidewall is evenly arranged with gas overflow mouth (22) after reduction.
A kind of coal-based direct reduction calcining kiln the most according to claim 7, it is characterised in that: gas overflow after described reduction
Mouth (22) connects with baking heat section (5).
A kind of coal-based direct reduction calcining kiln the most according to claim 1, it is characterised in that: described baking heat section (5)
And being provided with dividing plate between roasting preheating section (4), described dividing plate end baking heat section (5) is symmetrical with in roasting preheating section (4)
It is provided with flange.
A kind of coal-based direct reduction calcining kiln the most according to claim 1, it is characterised in that: described kiln body (1) sidewall with
Preheat between cloth pond (2) and kiln body (1) is provided with the thermal-insulating sealing gap (10) connected between sidewall with roasting system.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620582929.4U CN205679048U (en) | 2016-06-15 | 2016-06-15 | A kind of coal-based direct reduction calcining kiln |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620582929.4U CN205679048U (en) | 2016-06-15 | 2016-06-15 | A kind of coal-based direct reduction calcining kiln |
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| Publication Number | Publication Date |
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| CN205679048U true CN205679048U (en) | 2016-11-09 |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109013051A (en) * | 2018-07-12 | 2018-12-18 | 张雷 | A kind of method and device of coal-based direct reduction magnetic separation production Langaloy |
| CN109234486A (en) * | 2018-09-25 | 2019-01-18 | 张雷 | A kind of method and device thereof of coal-based direct reduction baked for producing reduced iron |
| CN113684337A (en) * | 2021-07-29 | 2021-11-23 | 张雷 | Method and device for optimizing iron ore by gas coal double-base direct reduction and magnetic separation |
| CN113684338A (en) * | 2021-07-29 | 2021-11-23 | 张雷 | Device and method for optimizing iron ore through gas-based direct reduction and magnetic separation |
| CN113684362A (en) * | 2021-07-29 | 2021-11-23 | 张雷 | Device and method for optimizing low-grade laterite-nickel ore through gas-based direct reduction and magnetic separation |
| CN113699367A (en) * | 2021-07-29 | 2021-11-26 | 张雷 | Method for optimizing low-grade laterite-nickel ore through gas-coal double-base direct reduction and magnetic separation |
| CN113957246A (en) * | 2021-10-29 | 2022-01-21 | 张雷 | Method and device for producing high-nickel alloy and reduced iron through coal-based coking magnetic separation |
-
2016
- 2016-06-15 CN CN201620582929.4U patent/CN205679048U/en active Active
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109013051A (en) * | 2018-07-12 | 2018-12-18 | 张雷 | A kind of method and device of coal-based direct reduction magnetic separation production Langaloy |
| CN109234486A (en) * | 2018-09-25 | 2019-01-18 | 张雷 | A kind of method and device thereof of coal-based direct reduction baked for producing reduced iron |
| CN109234486B (en) * | 2018-09-25 | 2023-04-11 | 张雷 | Method and device for producing reduced iron by coal-based direct reduction roasting |
| CN113684337A (en) * | 2021-07-29 | 2021-11-23 | 张雷 | Method and device for optimizing iron ore by gas coal double-base direct reduction and magnetic separation |
| CN113684338A (en) * | 2021-07-29 | 2021-11-23 | 张雷 | Device and method for optimizing iron ore through gas-based direct reduction and magnetic separation |
| CN113684362A (en) * | 2021-07-29 | 2021-11-23 | 张雷 | Device and method for optimizing low-grade laterite-nickel ore through gas-based direct reduction and magnetic separation |
| CN113699367A (en) * | 2021-07-29 | 2021-11-26 | 张雷 | Method for optimizing low-grade laterite-nickel ore through gas-coal double-base direct reduction and magnetic separation |
| CN113957246A (en) * | 2021-10-29 | 2022-01-21 | 张雷 | Method and device for producing high-nickel alloy and reduced iron through coal-based coking magnetic separation |
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