CN109855421A - A kind of energy saving rotary kiln of high carbon ferro-chrome production - Google Patents
A kind of energy saving rotary kiln of high carbon ferro-chrome production Download PDFInfo
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- CN109855421A CN109855421A CN201910027337.4A CN201910027337A CN109855421A CN 109855421 A CN109855421 A CN 109855421A CN 201910027337 A CN201910027337 A CN 201910027337A CN 109855421 A CN109855421 A CN 109855421A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/34—Indirect CO2mitigation, i.e. by acting on non CO2directly related matters of the process, e.g. pre-heating or heat recovery
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Abstract
The present invention relates to the technical fields of rotary kiln auxiliary equipment, produce more particularly to a kind of high carbon ferro-chrome and use energy saving rotary kiln, can carry out second-time burning, the saving energy to the heat of discharge and insufficient coal dust that burns；And the case where coal dust is unevenly distributed in kiln cylinder can be effectively prevented, guarantee the roasting effect to chromite, improve use reliability；The abrasion resistance properties of refractory brick are improved simultaneously, it is convenient that the refractory brick of damage is replaced, guarantee working efficiency；Including kiln cylinder, kiln head cover, kiln hood, rolling ring, supporting carrier roller, rotation drive device, discharging device, feeding device, downtake pipe, combustion box, the first blower, the second blower, the first regenerative chamber, the second regenerative chamber, burner, the first tracheae, first switch valve, heat storage, second exhaust pipe, the second tracheae, second switch valve, third tracheae, third switch valve, bucket of coalingging, air blower, pipe of delivering coal, coal chute, coal powder injection hole, Venturi tube, refractory brick and liner plate.
Description
Technical field
The present invention relates to the technical fields of rotary kiln auxiliary equipment, produce more particularly to a kind of high carbon ferro-chrome and are returned with energy conservation
Rotary kiln.
Background technique
It is well known that ferrochrome is the most important raw material for producing stainless steel, it is mainly used in production stainless steel, ball bearing
Steel, tool steel, nitrided steel, refractory steel, quenched and tempered steel, carburizing steel and hydrogen resistant steel, this is because chromium rising in stainless steel determines to make
With the element of decision stainless steel attribute only has one kind, and here it is chromium, a certain number of chromium are centainly contained in every kind of stainless steel capital, high
The production of carbon ferrochrome is a kind of auxiliary device for being smelted to chromite with energy saving rotary kiln, in the field of metallurgy
Extensive use is arrived；The energy saving rotary kiln of existing high carbon ferro-chrome production includes kiln cylinder, kiln head cover and kiln hood, kiln cylinder outside
Side is provided with multiple groups rolling ring, and the bottom end of multiple groups rolling ring is provided with supporting carrier roller, and the bottom end of kiln cylinder is provided with rotation drive device,
The input terminal and output end of kiln cylinder are respectively protruding into kiln hood and kiln head cover, and kiln cylinder and kiln head cover and kiln hood are connected
Place is provided with rotatory sealing, and discharging device and feeding device are respectively arranged at kiln head cover and kiln hood, is provided at kiln head cover
Exhaust pipe；The energy saving rotary kiln of existing high carbon ferro-chrome production is in use, pass through charging dress for chromite, coal dust and combustion air
It sets from kiln hood and is directed into kiln cylinder, drive kiln cylinder slowly to rotate by rotation drive device, chromite is transferred in kiln cylinder inward turning
Generation reduction reaction is heated during sending, the material after reduction enters kiln head cover and is discharged by discharging device, generation
High-temp waste gas is discharged by the exhaust pipe at kiln head cover；Existing high carbon ferro-chrome production is found in energy saving rotary kiln use, is arranged
Containing a large amount of heat and insufficient coal dust that burns in high-temp waste gas out, the waste of the energy is caused, causes practicability lower；
And since the length of kiln cylinder is longer, it is more in the input end position of kiln cylinder to lead to the coal dust being blown into, and in the output end of kiln cylinder
Position is less, to influence to cause use reliability lower the roasting effect of chromite；The refractory brick in kiln cylinder is easy simultaneously
Damage, and inconvenience replaces damage refractory brick, influences working efficiency.
Summary of the invention
In order to solve the above technical problems, the present invention provide it is a kind of can to the heat of discharge and burn insufficient coal dust into
The energy is saved in row second-time burning, improves practicability；And the case where coal dust is unevenly distributed in kiln cylinder can be effectively prevented,
Guarantee the roasting effect to chromite, improves use reliability；The abrasion resistance properties of refractory brick are improved simultaneously, it is convenient to damage
Refractory brick is replaced, and guarantees the energy saving rotary kiln of high carbon ferro-chrome production of working efficiency.
A kind of high carbon ferro-chrome of the invention, which produces, uses energy saving rotary kiln, including kiln cylinder, kiln head cover and kiln hood, outside kiln cylinder
Side is provided with multiple groups rolling ring, and the bottom end of multiple groups rolling ring is provided with supporting carrier roller, and the bottom end of kiln cylinder is provided with rotation drive device,
The input terminal and output end of kiln cylinder are respectively protruding into kiln hood and kiln head cover, and kiln cylinder and kiln head cover and kiln hood are connected
Place is provided with rotatory sealing, and discharging device and feeding device are respectively arranged at kiln head cover and kiln hood, is provided at kiln head cover
Downtake pipe；It further include combustion box, the first blower, the second blower, the first regenerative chamber and the second regenerative chamber, the combustion box
It is internally provided with working chamber, the top of combustion box is provided with burner, the top of the bottom output end spontaneous combustion saggar of the burner
End stretches in working chamber, and the input terminal of first blower is connected to downtake pipe, the output end spontaneous combustion of the first blower
The left end of case stretches to the lower section in working chamber and being located at burner output end, and the top of combustion box is provided with two group of first gas
Pipe, two group of first tracheae is connected to the first regenerative chamber and the second regenerative chamber respectively, and is respectively provided on two group of first tracheae
There is first switch valve, heat storage, the first regenerative chamber and the second accumulation of heat are provided in first regenerative chamber and the second regenerative chamber
The top of room is provided with second exhaust pipe, and the output end of second blower is provided with two group of second tracheae, and described two group
The output end of two tracheaes is connected to the top of the first regenerative chamber and the second regenerative chamber respectively, and is respectively provided on two group of second tracheae
There is a second switch valve, the bottom end of the first regenerative chamber and the second regenerative chamber is provided with and communicated with third tracheae, two groups of third gas
The output end of pipe stretches to inside kiln tail from the top of kiln tail, and is provided with third switch valve on two groups of third tracheaes；
It further include coaling bucket, air blower and pipe of delivering coal, the bucket of coalingging is internally provided with placed cavity, and coal is arranged in the top for bucket of coalingging
Mouthful, the bottom end for bucket of coalingging is provided with and communicated with coal chute, the pipe of delivering coal through entire kiln cylinder, the both ends for pipe of delivering coal respectively with kiln hood
Cover is connected with kiln hood, and pipe of delivering coal is located at the upper area of kiln cylinder, and the bottom end for pipe of delivering coal is provided with and communicated with multiple groups coal powder injection hole,
Multiple groups coal powder injection hole is respectively positioned in kiln cylinder, and the output end of the air blower is provided with Venturi tube, the Venturi tube it is defeated
Outlet is stretched in kiln hood and is connected to the right side input terminal for pipe of delivering coal, and the top of the bottom end Venturi tube of the coal chute connects
It is logical；The kiln cylinder is internally provided with refractory brick, and the section of the refractory brick is sector structure, and refractory brick includes extrados, interior
Cambered surface and left side and right side between extrados and intrados, and card column is provided on right side, left side
On be provided with card slot, the card column is symmetrical set with card slot, the inner sidewall adhesion of the extrados of refractory brick and kiln cylinder, fire resisting
Liner plate is detachably provided on the intrados of brick.
A kind of energy saving rotary kiln of high carbon ferro-chrome production of the invention, further includes four groups of fixture nuts, in the refractory brick
Four endpoint locations of cambered surface are provided with standing screw, and fixed hole, four groups of standing screws are provided on the liner plate
End be each passed through four groups of fixed holes and be connected through a screw thread respectively at four groups of fixture nuts.
A kind of energy saving rotary kiln of high carbon ferro-chrome production of the invention, further includes filter, two groups of second exhaust pipes
Output end be connected to the input terminal of filter, the filter is internally provided with activated carbon adsorption device, and is filtering
The output end of device is provided with third exhaust pipe.
A kind of energy saving rotary kiln of high carbon ferro-chrome production of the invention, the outside of four groups of fixed holes, which is provided with, puts
Set slot, four groups of fixture nuts be located at four groups described in placing groove.
A kind of energy saving rotary kiln of high carbon ferro-chrome production of the invention, the diameter of the pipe of delivering coal is from input terminal to output end
Direction gradually becomes smaller, and the output end for pipe of delivering coal is sealing state.
A kind of high carbon ferro-chrome of the invention, which produces, uses energy saving rotary kiln, is provided with multiple groups arc water conservancy diversion in the pipe of delivering coal
Plate, the multiple groups arc deflector are located at the surface in multiple groups coal powder injection hole, the top of multiple groups arc deflector with deliver coal
The inner roof wall of pipe connects, and the bottom end of multiple groups arc deflector is respectively facing multiple groups coal powder injection hole.
A kind of energy saving rotary kiln of high carbon ferro-chrome production of the invention, the heat storage is faviform ceramic heat retainer.
A kind of energy saving rotary kiln of high carbon ferro-chrome production of the invention, further includes stirring motor, the stirring motor installation
Shaft, the top of the bottom end self-chambering scuttle of the shaft are provided in the top for bucket of coalingging, and in the bottom output end of stirring motor
End, which stretches to, coalings in bucket, and the bottom of shaft is provided with paddle, and the paddle is located at the bottom coaling in bucket.
A kind of high carbon ferro-chrome of the invention, which produces, uses energy saving rotary kiln, is provided with regulating valve on the coal chute.
A kind of energy saving rotary kiln of high carbon ferro-chrome production of the invention, the refractory brick and liner plate are corundum material.
Compared with prior art the invention has the benefit that the high temperature that downtake pipe is discharged is given up by the first blower
Gas and insufficient coal dust that burns are blown into working chamber, are carried out second-time burning to insufficient coal dust that burns by burner, are produced
Raw heat is entered in the first regenerative chamber and the second regenerative chamber by the first tracheae and heats heat storage, and heat remains in accumulation of heat
On body, wherein the first switch valve on the first tracheae of another set is to close when one group of first tracheae is connected to the first regenerative chamber
State is blowed chilled air into the second regenerative chamber by the second blower and by the heat on heat storage in the second regenerative chamber by the
Three tracheaes are blown into kiln hood；When wherein one group of first tracheae is connected to the second regenerative chamber, on the first tracheae of another set
First switch valve is in off state, and the second blower blows chilled air into the first regenerative chamber and will be on heat storage in the first regenerative chamber
Heat blowed by third tracheae to kiln hood, secondary combustion can be carried out to the heat of discharge and insufficient coal dust that burns
It burns, saves the energy, improve practicability, rationally first switch valve, second switch valve and third switch valve are controlled；It coalings bucket
Interior coal dust is entered in Venturi tube by coal chute, is blowed the coal dust in Venturi tube into pipe of delivering coal by air blower,
The coal dust delivered coal in pipe is ejected in kiln cylinder by multiple groups coal powder injection hole, can be carried out long distance delivery to coal dust, can effectively be kept away
Exempt from the case where coal dust is unevenly distributed in kiln cylinder, guarantee the roasting effect to chromite, improves use reliability；By resistance to
Liner plate is arranged in the medial surface of firebrick, is protected by liner plate to refractory brick, improves the abrasion resistance properties of refractory brick, sends out in liner plate
When raw damage, directly liner plate is replaced, it is easy to operate, guarantee working efficiency.
Detailed description of the invention
Fig. 1 is structural schematic diagram of the invention；
Fig. 2 is the schematic perspective view of refractory brick of the present invention；
Fig. 3 is the cross section structure schematic diagram that kiln cylinder of the present invention is connect with refractory brick；
Fig. 4 is the cross section structure schematic diagram of pipe part of the invention of delivering coal；
It is attached marked in the figure: 1, kiln cylinder；2, kiln head cover；3, kiln hood；4, rolling ring；5, supporting carrier roller；6, rotation drive device；
7, discharging device；8, feeding device；9, downtake pipe；10, combustion box；11, the first blower；12, the second blower；13, first
Regenerative chamber；14, the second regenerative chamber；15, burner；16, the first tracheae；17, first switch valve；18, heat storage；19, second row
Tracheae；20, the second tracheae；21, second switch valve；22, third tracheae；23, third switch valve；24, it coalings bucket；25, air blower；
26, it delivers coal pipe；27, coal chute；28, coal powder injection hole；29, Venturi tube；30, refractory brick；31, card column；32, card slot；33, liner plate；
34, fixture nut；35, standing screw；36, filter；37, activated carbon adsorption device；38, third exhaust pipe；39, arc water conservancy diversion
Plate；40, stirring motor；41, paddle；42, regulating valve.
Specific embodiment
With reference to the accompanying drawings and examples, specific embodiments of the present invention will be described in further detail.Implement below
Example is not intended to limit the scope of the invention for illustrating the present invention.
As shown in Figures 1 to 4, a kind of high carbon ferro-chrome of the invention production energy saving rotary kiln, including kiln cylinder 1, kiln head cover 2
With kiln hood 3, the outside of kiln cylinder 1 is provided with multiple groups rolling ring 4, and the bottom end of multiple groups rolling ring 4 is provided with supporting carrier roller 5, kiln cylinder 1
Bottom end is provided with rotation drive device 6, and the input terminal and output end of kiln cylinder 1 are respectively protruding into kiln hood 3 and kiln head cover 2, and
And kiln cylinder 1 and the joining place of kiln head cover 2 and kiln hood 3 are provided with rotatory sealing, are respectively arranged at kiln head cover 2 and kiln hood 3
Discharging device 7 and feeding device 8 are provided with downtake pipe 9 at kiln head cover 2；It further include combustion box 10, the first blower 11,
Two blowers 12, the first regenerative chamber 13 and the second regenerative chamber 14, combustion box 10 are internally provided with working chamber, the top of combustion box 10
It is provided with burner 15, the top of the bottom output end spontaneous combustion saggar 10 of burner 15 stretches in working chamber, the first blower 11
Input terminal be connected to downtake pipe 9, the left end of the output end spontaneous combustion saggar 10 of the first blower 11 stretches in working chamber simultaneously
Positioned at the lower section of 15 output end of burner, the top of combustion box 10 is provided with two group of first tracheae 16, and two group of first tracheae 16 divides
It is not connected to the first regenerative chamber 13 and the second regenerative chamber 14, and is provided with first switch valve 17 on two group of first tracheae 16,
Heat storage 18, the top of the first regenerative chamber 13 and the second regenerative chamber 14 are provided in first regenerative chamber 13 and the second regenerative chamber 14
It is provided with second exhaust pipe 19, the output end of the second blower 12 is provided with two group of second tracheae 20, two group of second tracheae 20
Output end is connected to the top of the first regenerative chamber 13 and the second regenerative chamber 14 respectively, and is provided on two group of second tracheae 20
The bottom end of second switch valve 21, the first regenerative chamber 13 and the second regenerative chamber 14 is provided with and communicated with third tracheae 22, two groups of thirds
The output end of tracheae 22 stretches to inside kiln tail from the top of kiln tail, and is provided with third on two groups of third tracheaes 22 and opens
Close valve 23；It further include coaling bucket 24, air blower 25 and pipe 26 of delivering coal, bucket 24 of coalingging is internally provided with placed cavity, bucket 24 of coalingging
Top coal filling hole is set, the bottom end for bucket 24 of coalingging is provided with and communicated with coal chute 27, and pipe 26 of delivering coal runs through entire kiln cylinder 1, delivers coal
The both ends of pipe 26 are connect with kiln head cover 2 and kiln hood 3 respectively, and pipe 26 of delivering coal is located at the upper area of kiln cylinder 1, pipe 26 of delivering coal
Bottom end be provided with and communicated with multiple groups coal powder injection hole 28, multiple groups coal powder injection hole 28 is respectively positioned in kiln cylinder 1, and the output end of air blower 25 is provided with
Venturi tube 29, the output end of Venturi tube 29 are stretched in kiln hood 3 and are connected to the right side input terminal for pipe 26 of delivering coal, defeated coal
The top of the bottom end Venturi tube 29 of pipe 27 is connected to；Kiln cylinder 1 is internally provided with refractory brick 30, and the section of refractory brick 30 is sector
Structure, refractory brick 30 include extrados, intrados and left side and right side between extrados and intrados, and
It is provided with card column 31 on right side, card slot 32 is provided on left side, card column 31 is symmetrical set with card slot 32, refractory brick 30
Extrados and kiln cylinder 1 inner sidewall adhesion, be detachably provided with liner plate 33 on the intrados of refractory brick 30；Pass through the first blower
The high-temp waste gas of downtake pipe discharge and insufficient coal dust that burns are blown into working chamber, burning is not filled by burner
The coal dust divided carries out second-time burning, and the heat of generation is entered in the first regenerative chamber and the second regenerative chamber and will be stored by the first tracheae
Hot body heating, heat remain on heat storage, wherein when one group of first tracheae is connected to the first regenerative chamber, the first gas of another set
First switch valve on pipe is in off state, and is blowed chilled air into the second regenerative chamber by the second blower and by the second regenerative chamber
Heat on interior heat storage is blown into kiln hood by third tracheae；When wherein one group of first tracheae is connected to the second regenerative chamber
When, the first switch valve on the first tracheae of another set is in off state, and the second blower blows chilled air into the first regenerative chamber
And blow the heat on heat storage in the first regenerative chamber to kiln hood by third tracheae, it can heat to discharge and combustion
Burn insufficient coal dust and carry out second-time burning, save the energy, improve practicability, rationally to first switch valve, second switch valve and
Third switch valve is controlled；The coal dust coaling in bucket is entered in Venturi tube by coal chute, by air blower by venturi
Coal dust in pipe is blowed into pipe of delivering coal, and the coal dust in pipe of delivering coal is ejected in kiln cylinder by multiple groups coal powder injection hole, can be to coal dust
Long distance delivery is carried out, it is possible to prevente effectively from the case where coal dust is unevenly distributed in kiln cylinder, guarantees that the roasting to chromite is imitated
Fruit improves use reliability；Liner plate is set by the medial surface in refractory brick, refractory brick is protected by liner plate, is improved
The abrasion resistance properties of refractory brick directly replace liner plate when liner plate is damaged, easy to operate, guarantee work
Efficiency.
A kind of energy saving rotary kiln of high carbon ferro-chrome production of the invention, further includes four groups of fixture nuts 34, in refractory brick 30
Four endpoint locations of cambered surface are provided with standing screw 35, are provided with fixed hole on liner plate 33, four groups of standing screws 35
End is each passed through four groups of fixed holes and is connected through a screw thread respectively at four groups of fixture nuts 34；Refractory brick and liner plate pass through solid
The spiral shell assembly for determining screw rod and fixture nut, which is closed, to be fixedly mounted, convenient to replace to the liner plate of damage, in liner plate damage, is passed through
Refractory brick can still guarantee the stability of firebrick structure.
A kind of energy saving rotary kiln of high carbon ferro-chrome production of the invention, further includes filter 36, two groups of second exhaust pipes 19
Output end be connected to the input terminal of filter 36, filter 36 is internally provided with activated carbon adsorption device 37, and in mistake
The output end of filter 36 is provided with third exhaust pipe 38；It is inhaled by the low-temperature flue gas that second exhaust pipe enters filter by active carbon
Adsorption device absorption, removes the harmful components in flue gas, and then treated gas is discharged from third exhaust pipe.
A kind of energy saving rotary kiln of high carbon ferro-chrome production of the invention, the outside of four groups of fixed holes is provided with placement
Slot, four groups of fixture nuts 34 are located in four groups of placing grooves；It is set in placing groove by fixture nut, prevents chromite from existing
It rubs during rolling with fixture nut, to improve practicability the case where loosening fixture nut.
A kind of high carbon ferro-chrome production of the invention is with energy saving rotary kiln, and the diameter of pipe 26 of delivering coal is from input terminal to output end side
To gradually becoming smaller, the output end for pipe 26 of delivering coal is sealing state；Guarantee delivers coal pipe to the conveying effect of coal dust, and coal dust is made to deliver coal
It still can have enough kinetic energy when output end position in pipe to spray from coal powder injection hole.
A kind of high carbon ferro-chrome production of the invention is provided with multiple groups arc deflector in pipe 26 of delivering coal with energy saving rotary kiln
39, multiple groups arc deflector 39 is located at the surface in multiple groups coal powder injection hole 28, the top of multiple groups arc deflector 39 with give
The inner roof wall of coal pipe 26 connects, and the bottom end of multiple groups arc deflector 39 is respectively facing multiple groups coal powder injection hole 28；Pass through arc deflector
The coal dust delivered coal in pipe is sent, a part of coal dust is sent in coal powder injection hole and is sprayed, improves practicability.
A kind of energy saving rotary kiln of high carbon ferro-chrome production of the invention, heat storage 18 is faviform ceramic heat retainer 18；It protects
Demonstrate,prove heat exchange efficiency and heat transfer effect.
A kind of energy saving rotary kiln of high carbon ferro-chrome production of the invention, further includes stirring motor 40, stirring motor 40 is installed
It is provided with shaft in the top for bucket 24 of coalingging, and in the bottom output end of stirring motor 40, the bottom end self-chambering scuttle 24 of shaft
Top, which stretches to, coalings in bucket 24, and the bottom of shaft is provided with paddle 41, and paddle 41 is located at the bottom coaling in bucket 24
Portion；Shaft and paddle rotation are driven by stirring motor, coal dust is continuously conveyed, prevents coal dust during transportation
Appearance is interrupted and influences the roasting to chromite.
A kind of high carbon ferro-chrome of the invention, which produces, uses energy saving rotary kiln, is provided with regulating valve 42 on coal chute 27；According to chromium
Concrete condition when iron ore roasts, can be adjusted by defeated coal flow of the regulating valve to coal chute, improve use reliability.
A kind of energy saving rotary kiln of high carbon ferro-chrome production of the invention, refractory brick 30 and liner plate 33 are corundum material；It protects
Demonstrate,prove its high temperature resistance and thermal shock resistance.
A kind of high carbon ferro-chrome production of the invention is at work led to chromite and combustion air with energy saving rotary kiln
It crosses feeding device to be directed into kiln cylinder from kiln hood, drives kiln cylinder slowly to rotate by rotation drive device, chromite is in kiln cylinder
Inward turning is transferred send during be heated generation reduction reaction, the material after reduction enter kiln head cover and by discharging device arrange
Out, the high-temp waste gas that downtake pipe is discharged and insufficient coal dust that burns are blown into working chamber by the first blower, are passed through
Burner carries out second-time burning to the insufficient coal dust of burning, and the heat of generation enters the first regenerative chamber and the by the first tracheae
It is heated in two regenerative chambers and by heat storage, heat remains on heat storage, wherein one group of first tracheae is connected to the first regenerative chamber
When, the first switch valve on the first tracheae of another set is in off state, and blows chilled air into the second accumulation of heat by the second blower
Heat on heat storage in second regenerative chamber is simultaneously blown into kiln hood by interior by third tracheae；When wherein one group of first tracheae
When being connected to the second regenerative chamber, the first switch valve on the first tracheae of another set is in off state, and the second blower is by cold air
It is blown into the first regenerative chamber and blows the heat on heat storage in the first regenerative chamber to kiln hood by third tracheae, it can be with
Heat and insufficient coal dust that burns to discharge carry out second-time burning, save the energy, practicability are improved, rationally to first switch
Valve, second switch valve and third switch valve are controlled；The coal dust coaling in bucket is entered in Venturi tube by coal chute, is passed through
Air blower blows the coal dust in Venturi tube into pipe of delivering coal, and the coal dust in pipe of delivering coal is ejected to kiln cylinder by multiple groups coal powder injection hole
It is interior, long distance delivery can be carried out to coal dust, it is possible to prevente effectively from the case where coal dust is unevenly distributed in kiln cylinder, guarantees to chromium
The roasting effect of iron ore improves use reliability；By refractory brick medial surface be arranged liner plate, by liner plate to refractory brick into
Row protection, improves the abrasion resistance properties of refractory brick, when liner plate is damaged, directly replaces to liner plate, operation side
Just, guarantee that working efficiency, refractory brick and liner plate are closed and are fixedly mounted by standing screw and the assembly of the spiral shell of fixture nut, it is convenient to damage
Bad liner plate is replaced, and in liner plate damage, can still guarantee the stability of firebrick structure by refractory brick, by the
The low-temperature flue gas that two exhaust pipes enter filter is tightly held by activated carbon device absorption, removes the harmful components in flue gas, then will
Treated gas is discharged from third exhaust pipe, is set in placing groove by fixture nut, prevents chromite in rolling
It rubs in the process with fixture nut, thus the case where loosening fixture nut, the diameter of pipe of delivering coal is from input terminal to output
Extreme direction gradually becomes smaller, and the pipe that guarantees to deliver coal makes still may be used when output end position of the coal dust in pipe of delivering coal to the conveying effect of coal dust
To be sprayed with enough kinetic energy from coal powder injection hole, drives shaft and paddle to rotate by stirring motor, connect coal dust
Continuous conveying, prevents coal dust from occurring interrupting and influencing the roasting to chromite during transportation, tool when being roasted according to chromite
Body situation can be adjusted by defeated coal flow of the regulating valve to coal chute, improve use reliability.
A kind of energy saving rotary kiln of high carbon ferro-chrome production of the invention, first switch valve, second switch valve and third switch
Valve is solenoid valve, and first switch valve, second switch valve and third switch valve are connected with the automatic control controlled it
Device processed can carry out alternately opening and closing to first switch valve, second switch valve and third switch valve, guarantee heat exchange effect
Rate.
The above is only a preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, without departing from the technical principles of the invention, several improvements and modifications, these improvements and modifications can also be made
Also it should be regarded as protection scope of the present invention.
Claims (10)
1. a kind of high carbon ferro-chrome production energy saving rotary kiln, including kiln cylinder (1), kiln head cover (2) and kiln hood (3), kiln cylinder (1)
Outside is provided with multiple groups rolling ring (4), and the bottom end of multiple groups rolling ring (4) is provided with supporting carrier roller (5), the bottom end setting of kiln cylinder (1)
Having rotation drive device (6), the input terminal and output end of kiln cylinder (1) are respectively protruding into kiln hood (3) and kiln head cover (2), and
And the joining place of kiln cylinder (1) and kiln head cover (2) and kiln hood (3) is provided with rotatory sealing, at kiln head cover (2) and kiln hood (3)
It is respectively arranged with discharging device (7) and feeding device (8), downtake pipe (9) are provided at kiln head cover (2)；It is characterized in that,
It further include combustion box (10), the first blower (11), the second blower (12), the first regenerative chamber (13) and the second regenerative chamber (14), institute
The working chamber that is internally provided with of combustion box (10) is stated, the top of combustion box (10) is provided with burner (15), the burner
(15) top of bottom output end spontaneous combustion saggar (10) stretches in working chamber, the input terminal of first blower (11) and
One exhaust pipe (9) connection, the left end of the output end spontaneous combustion saggar (10) of the first blower (11) stretch in working chamber and are located at combustion
The lower section of burner (15) output end, the top of combustion box (10) are provided with two group of first tracheae (16), two group of first tracheae
(16) it is connected to respectively with the first regenerative chamber (13) and the second regenerative chamber (14), and is provided on two group of first tracheae (16)
Heat storage (18), the first accumulation of heat are provided in one switch valve (17), first regenerative chamber (13) and the second regenerative chamber (14)
Room (13) and the top of the second regenerative chamber (14) are provided with second exhaust pipe (19), and the output end of second blower (12) is set
It is equipped with two group of second tracheae (20), the output end of two group of second tracheae (20) is stored with the first regenerative chamber (13) and second respectively
The top in hot cell (14) is connected to, and is provided with second switch valve (21), the first regenerative chamber on two group of second tracheae (20)
(13) it is provided with and communicated with third tracheae (22) with the bottom end of the second regenerative chamber (14), the output of two groups of third tracheaes (22)
End stretches to inside kiln tail from the top of kiln tail, and is provided with third switch valve (23) on two groups of third tracheaes (22)；
It further include coaling bucket (24), air blower (25) and pipe of delivering coal (26), the bucket of coalingging (24) is internally provided with placed cavity, coalings
Coal filling hole is arranged in the top of bucket (24), and the bottom end of bucket of coalingging (24) is provided with and communicated with coal chute (27), and the pipe of delivering coal (26) is passed through
Entire kiln cylinder (1) is worn, the both ends of pipe of delivering coal (26) are connect with kiln head cover (2) and kiln hood (3) respectively, and pipe of delivering coal (26) position
Upper area in kiln cylinder (1), the bottom end of pipe of delivering coal (26) are provided with and communicated with multiple groups coal powder injection hole (28), multiple groups coal powder injection hole
(28) it is respectively positioned in kiln cylinder (1), the output end of the air blower (25) is provided with Venturi tube (29), the Venturi tube (29)
Output end stretch in kiln hood (3) and be connected to the right side input terminal of pipe of delivering coal (26), the bottom end of the coal chute (27)
The top of Venturi tube (29) is connected to；The kiln cylinder (1) is internally provided with refractory brick (30), the section of the refractory brick (30)
For sector structure, refractory brick (30) includes extrados, intrados and left side and the right side between extrados and intrados
Side, and card column (31) are provided on right side, it is provided on left side card slot (32), the card column (31) and card slot (32)
It is symmetrical set, the extrados of refractory brick (30) and the inner sidewall adhesion of kiln cylinder (1), it is removable on the intrados of refractory brick (30)
It unloads and is provided with liner plate (33).
2. a kind of energy saving rotary kiln of high carbon ferro-chrome production as described in claim 1, which is characterized in that further include four groups and fix
Four endpoint locations of nut (34), refractory brick (30) intrados are provided with standing screw (35), the liner plate (33)
On be provided with fixed hole, the end of four groups of standing screws (35) is each passed through four groups of fixed holes and solid respectively at four groups
Determine nut (34) to be connected through a screw thread.
3. a kind of energy saving rotary kiln of high carbon ferro-chrome production as claimed in claim 2, which is characterized in that further include filter
(36), the output end of two groups of second exhaust pipes (19) is connected to the input terminal of filter (36), the filter (36)
Be internally provided with activated carbon adsorption device (37), and the output end of filter (36) is provided with third exhaust pipe (38).
4. a kind of energy saving rotary kiln of high carbon ferro-chrome production as claimed in claim 3, which is characterized in that four groups of fixations are logical
The outside in hole is provided with placing groove, four groups of fixture nuts (34) be located at four groups described in placing groove.
5. a kind of energy saving rotary kiln of high carbon ferro-chrome production as claimed in claim 4, which is characterized in that the pipe of delivering coal (26)
Diameter gradually become smaller from input terminal to output extreme direction, the output end of pipe of delivering coal (26) is sealing state.
6. a kind of energy saving rotary kiln of high carbon ferro-chrome production as claimed in claim 5, which is characterized in that the pipe of delivering coal (26)
Inside be provided with multiple groups arc deflector (39), the multiple groups arc deflector (39) be located at multiple groups coal powder injection hole (28) just on
Side, the top of multiple groups arc deflector (39) are connect with the inner roof wall of pipe of delivering coal (26), the bottom of multiple groups arc deflector (39)
End is respectively facing multiple groups coal powder injection hole (28).
7. a kind of energy saving rotary kiln of high carbon ferro-chrome production as claimed in claim 6, which is characterized in that the heat storage (18)
For faviform ceramic heat retainer (18).
8. a kind of energy saving rotary kiln of high carbon ferro-chrome production as claimed in claim 7, which is characterized in that further include stirring motor
(40), the stirring motor (40) is installed on the top of bucket of coalingging (24), and is arranged in the bottom output end of stirring motor (40)
There is shaft, the top of the bottom end self-chambering scuttle (24) of the shaft stretches in bucket of coalingging (24), and is arranged in the bottom of shaft
Have paddle (41), the paddle (41) is located at the bottom coaling in bucket (24).
9. a kind of energy saving rotary kiln of high carbon ferro-chrome production as claimed in claim 8, which is characterized in that the coal chute (27)
On be provided with regulating valve (42).
10. a kind of energy saving rotary kiln of high carbon ferro-chrome production as claimed in claim 9, which is characterized in that the refractory brick
(30) and liner plate (33) is corundum material.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910027337.4A CN109855421B (en) | 2019-01-11 | 2019-01-11 | Energy-saving rotary kiln for producing high-carbon ferrochrome |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910027337.4A CN109855421B (en) | 2019-01-11 | 2019-01-11 | Energy-saving rotary kiln for producing high-carbon ferrochrome |
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| CN109855421B CN109855421B (en) | 2020-04-10 |
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| CN112619456A (en) * | 2020-12-08 | 2021-04-09 | 南京理工大学 | Smoke dust generating device with strip-shaped outlet |
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| CN115265175A (en) * | 2022-06-15 | 2022-11-01 | 佛山市天禄智能装备科技有限公司 | Rotary kiln capable of freely switching combustion gas |
| CN116202313A (en) * | 2023-03-08 | 2023-06-02 | 江苏鹏飞集团股份有限公司 | Low-carbon lithium mineral roasting rotary kiln equipment with waste heat recovery |
| CN116518732A (en) * | 2023-05-11 | 2023-08-01 | 云南云帆有色金属股份有限公司 | Rotary kiln waste gas recovery system |
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