CN109682167A - A kind of low-order coal drying and upgrading integration apparatus and method - Google Patents
A kind of low-order coal drying and upgrading integration apparatus and method Download PDFInfo
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- CN109682167A CN109682167A CN201811524560.1A CN201811524560A CN109682167A CN 109682167 A CN109682167 A CN 109682167A CN 201811524560 A CN201811524560 A CN 201811524560A CN 109682167 A CN109682167 A CN 109682167A
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- sifting barrel
- roller
- sieve
- steam pipe
- lignite
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B1/00—Preliminary treatment of solid materials or objects to facilitate drying, e.g. mixing or backmixing the materials to be dried with predominantly dry solids
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B1/00—Preliminary treatment of solid materials or objects to facilitate drying, e.g. mixing or backmixing the materials to be dried with predominantly dry solids
- F26B1/005—Preliminary treatment of solid materials or objects to facilitate drying, e.g. mixing or backmixing the materials to be dried with predominantly dry solids by means of disintegrating, e.g. crushing, shredding, milling the materials to be dried
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B11/00—Machines or apparatus for drying solid materials or objects with movement which is non-progressive
- F26B11/02—Machines or apparatus for drying solid materials or objects with movement which is non-progressive in moving drums or other mainly-closed receptacles
- F26B11/04—Machines or apparatus for drying solid materials or objects with movement which is non-progressive in moving drums or other mainly-closed receptacles rotating about a horizontal or slightly-inclined axis
- F26B11/0463—Machines or apparatus for drying solid materials or objects with movement which is non-progressive in moving drums or other mainly-closed receptacles rotating about a horizontal or slightly-inclined axis having internal elements, e.g. which are being moved or rotated by means other than the rotating drum wall
- F26B11/0468—Machines or apparatus for drying solid materials or objects with movement which is non-progressive in moving drums or other mainly-closed receptacles rotating about a horizontal or slightly-inclined axis having internal elements, e.g. which are being moved or rotated by means other than the rotating drum wall for disintegrating, crushing, or for being mixed with the materials to be dried
- F26B11/0472—Machines or apparatus for drying solid materials or objects with movement which is non-progressive in moving drums or other mainly-closed receptacles rotating about a horizontal or slightly-inclined axis having internal elements, e.g. which are being moved or rotated by means other than the rotating drum wall for disintegrating, crushing, or for being mixed with the materials to be dried the elements being loose bodies or materials, e.g. balls, which may have a sorbent effect
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B21/00—Arrangements or duct systems, e.g. in combination with pallet boxes, for supplying and controlling air or gases for drying solid materials or objects
- F26B21/004—Nozzle assemblies; Air knives; Air distributors; Blow boxes
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B25/00—Details of general application not covered by group F26B21/00 or F26B23/00
- F26B25/001—Handling, e.g. loading or unloading arrangements
- F26B25/002—Handling, e.g. loading or unloading arrangements for bulk goods
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B25/00—Details of general application not covered by group F26B21/00 or F26B23/00
- F26B25/06—Chambers, containers, or receptacles
- F26B25/14—Chambers, containers, receptacles of simple construction
- F26B25/16—Chambers, containers, receptacles of simple construction mainly closed, e.g. drum
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B3/00—Drying solid materials or objects by processes involving the application of heat
- F26B3/02—Drying solid materials or objects by processes involving the application of heat by convection, i.e. heat being conveyed from a heat source to the materials or objects to be dried by a gas or vapour, e.g. air
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Microbiology (AREA)
- Solid Fuels And Fuel-Associated Substances (AREA)
- Drying Of Solid Materials (AREA)
Abstract
A kind of low-order coal drying and upgrading integration apparatus and method are suitable for lignite processing and utilization.Equipment includes heating system, transmission system, roller, steam pipe, header, feeding inlet, predrying room, crude product outlet, sieve compartment, ore grinding room, outlet port.Drum-inclined is placed, and steam pipe is arranged in concentric circles on roller barrel.Lignite enters in roller from feeding inlet, it is first preheated in predrying room, particle travels forward in predrying room, enter the first sieve compartment from the end in pre-add hot cell, tiny particle enters in fine grained hothouse, and bulky grain moves forward, bulky grain on sieve has come ore grinding room by the first sieve compartment, lignite after comminution enters the second sieve compartment, and the tiny particle that comminution generates enters fine grained hothouse, and remaining bulky grain, which travels forward, to be discharged outside bucket.The moisture finally to gasify is discharged with blower by exhaust outlet.Its structure is simple, easy-to-operate, and dry comminution is high-efficient.
Description
Technical field
It is especially a kind of suitable for lignite processing and utilization the present invention relates to a kind of low-order coal drying and upgrading device and method
Low-order coal drying and upgrading integration apparatus and method.
Background technique
Chinese lignite resource is abundant, and proven reserve is up to more than 1,300 hundred million t, and 13% or so of Zhan Quanguo coal reserves.But it is brown
Coal is the minimum coal of degree of coalification, and with moisture height, ash content is high, volatile matter is high, surface oxygen functional group is more, chemical reactivity
By force, the characteristics such as calorific value is low, exist and are difficult to sort, store and directly utilize.Since lignite upgrading can effectively reduce moisture in coal,
Lignite calorific value is improved, the lignite after upgrading has the property similar with bituminous coal, can reach generally with coal requirement.
Lignite after upgrading would be even more beneficial to utilize, transport and store.If 50% moisture in lignite is removed, then
The discharge amount of the greenhouse gases generated after lignite will being burnt reduces by 15%.This influence for lignite power plant is undoubtedly very
It is huge.
Since 2000 in lignite upgrading technology used by the country, the technique for being mainly used in actual production is that lignite is de-
Hydraulic art, the overall technology of the technique are quite mature.By development these years, domestic enterprise has been not content with existing
Technology.Some enterprises, which have begun, to optimize and improves to existing lignite dewatering process, such as lignite process for upgrading skill
Art just combines two kinds of technological merits of fluidized bed and rotary drying, using hot fume as heat medium.It is dry with existing rotating cylinder
Dry technology is compared, which has the prominent advantages that: the heat transfer that drying process is enhanced by adding fluidized bed in rotating cylinder passes
Matter increases the time of contact of particle and dry gas in rotating cylinder, to improve the drying capacity of equipment.It is dry with fluidized bed
Dry technology is compared, which has the prominent advantages that: the bed pressure drop of fluidized bed is effectively reduced, to reduce to blower pressure
The demand of head, and by and the combination of rotating cylinder control residence time of the particle in drier, easily controllable solid back-mixing, and
Without adding complicated heat exchanger, device requirement is simplified while retaining fluidized bed drying advantage.
Summary of the invention
Technical problem: the invention aims to overcome shortcoming in the prior art, provide that a kind of structure is simple, behaviour
Make safe ready, dry comminution high-efficient low-order coal drying and upgrading integration apparatus and method.
Technical solution: to achieve the above object, a kind of low-order coal drying and upgrading integration apparatus of the invention, including heating
System, roller, on the roller inner peripheral wall is furnished with steam pipe at transmission system, and the steam pipe is with the side of concentric circles
Formula is arranged on roller barrel, be equipped in the roller predrying room rotated together with roller, the first sifting barrel, ore grinding cylinder and
Second sifting barrel, the front of the steam pipe are equipped with feeding inlet, and the top of feeding inlet is equipped with waste gas outlet, and the rear portion of steam pipe is set
There is crude product discharge gate, crude product discharge gate is connected with header；The feeding inlet is connected with predrying room；Predrying room with
First sifting barrel is connected；First sifting barrel is connected by typhon cylinder isolation board with inner wall of rotary drum；First sifting barrel and built-in mill
The ore grinding cylinder of mine medium is connected；Ore grinding cylinder is connected with the second sifting barrel；Second sifting barrel and crude product discharge gate pass through one section of nothing
Sieve area is connected；The side of the crude product discharge gate is equipped with the steam air intake of connection collector tank inlet, another to be equipped with connection
The condensed water discharge outlet of steam distribution chamber outlet, heating steam is entered by rotary joint, gas axis directly distributes heat after header
In steam to every heating tube, hot steam flows to feed end by discharge end, and condensed water is then against steam flow by feed end to discharging
End enters steam distribution chamber, is discharged by vapour axis, rotary joint from condensed water discharge outlet；First sifting barrel, ore grinding cylinder
On the same axis with the second sifting barrel and steam pipe, the inner tubal wall interval of perimeter wall and steam pipe, interval is formed by sky
Between be fine grained hothouse, the fine grained hothouse is connect by typhon cylinder isolation board with predrying room, and sieve is passed through
It is connected to, is connect by inner tubal wall with ore grinding cylinder, the lower part of fine grained hothouse is set with the first sifting barrel and the second sifting barrel respectively
There is dry fine grained product offtake.
The toy trumpet cylinder baffle for preventing milling medium from entering in the second sifting barrel is provided in the ore grinding cylinder.
The drum-inclined is placed, and inclination angle is 2~10 °.
Use the low-order coal drying and upgrading method of the upper integration apparatus, comprising the following steps:
A. lignite is sent in the predrying room rotated with roller from feeding inlet, carries out pre-add in predrying room first
Heat, lignite preheating in predrying room simultaneously, constantly travel forward, by between particle under the roller effect being obliquely installed
Collision, mill stripping, the stirring and heating of steam pipe when fragmentation phenomenon, generate a large amount of tiny particles；
B. the lignite for generating a large amount of fine particles passes through one section of gradient of typhon cylinder isolation board in the end in pre-add hot cell
Enter the first sifting barrel, afterwards to guarantee lignite surface sufficiently dry, the sieve of free sticky property too the first sifting barrel of big blocking；With rolling
The rotation of cylinder, the lignite of fine particle constantly roll in sifting barrel by the first sifting barrel, tiny particle through sieve into
Enter into fine grained hothouse, the bulky grain on sieve moves forward；
C. the bulky grain on sieve is entered in the ore grinding cylinder equipped with milling medium by the first sifting barrel, and bulky grain lignite is being ground
By comminution in ore chimney, later, one Duan Po of toy trumpet cylinder for preventing milling medium from entering by being connected to the second sifting barrel inlet
After degree, enter in the second sifting barrel；
D. the sieve pore that a large amount of tiny particles that comminution generates pass through the second sifting barrel drops into fine grained hothouse, the
Remaining bulky grain moves forward on two sifting barrels, is discharged outside bucket by crude product discharge gate, passes through belt conveyor weight
Newly handled again back to feeding inlet；
E. the dry indoor fine grained of fine grained is fallen in directly to contact with steam pipe, while constantly rolling with roller, quilt
The gas sprayed in steam pipe constantly rises act and stirring travels forward, and reaches maximum drying, finally by dry fine grained
Outlet discharge；
F. enter exhaust gas of the moisture through the blower from being located at exhaust outlet from feeding inlet end after gasifying in roller from steam pipe
Mouth discharge.
The slot size of sieve is adjusted according to on-site actual situations in first, second sifting barrel.
The milling medium type in the ore grinding cylinder be steel ball, steel watt, rod iron any one, according to material size
Thickness situation is selected.
The utility model has the advantages that by adopting the above-described technical solution, the present invention is based on lignite steam pipe indirect heating rotary dryings
The transformation of device is able to achieve the drying comminution integration of low-order coal, improves while simplifying prior art drying comminution process
Drying efficiency, structure is simple, easy-to-operate, and dry comminution is high-efficient.Relative to existing equipment, have the advantage that
1. the drying of low-order coal, comminution and screening are combined together, technique simplifies, save the cost；
2. having been focused on dry in the fine particulate coal after comminution, so that drying is more thorough；
3. drying process carries out indirect heating using steam pipe, it is big brought explosive to eliminate Dust Capacity in drying process
Security risk；
It can prevent fine particulate coal from crossing thermal decomposition 4. carrying out indirect heating using steam.
Detailed description of the invention
Fig. 1 is a kind of structural schematic diagram of the dry comminution integration apparatus of low-order coal of the invention.
Fig. 2 is the cross-sectional view of Fig. 1.
Fig. 3 is the A-A cross-sectional view of Fig. 1.
In figure: 1- feeding inlet, 2- exhaust outlet, 3- steam air intake, 4- condensed water discharge outlet, the dry fine grained product row of 5-
Outlet, 6- steam pipe, 7- sieve compartment, 8- ore grinding room, 9- sieve compartment, 10- crude product discharge gate, 11- predrying room, 12- thin
Grain hothouse, 13- header, 14- roller, 15- typhon cylinder isolation board.
Specific embodiment
The invention will be further described for embodiment in reference to the accompanying drawing:
As shown in Fig. 1 Fig. 2, a kind of low-order coal drying and upgrading integration apparatus of the invention, mainly by heating system, transmission
System, roller 14, steam pipe 6, sifting barrel and ore grinding cylinder are constituted, 14 slant setting of roller, and inclination angle is 2~10 °.Described
14 inner peripheral wall of roller on be furnished with steam pipe 6, the steam pipe 6 is arranged in concentric circles on roller barrel, steam
Steam pipe 6 is arranged on 14 inner peripheral wall of roller through bend pipe connection, be equipped in roller 14 the predrying room 11 rotated together with roller,
First sifting barrel 7, ore grinding cylinder 8 and the second sifting barrel 9 are provided in the ore grinding cylinder 8 and milling medium are prevented to enter the second sieve
Divide the toy trumpet cylinder baffle in cylinder 9.The front of the steam pipe 6 is equipped with feeding inlet 1, and the top of feeding inlet 1 is equipped with waste gas outlet
2, the rear portion of steam pipe 6 is equipped with crude product discharge gate 10, and crude product discharge gate 10 is connected with header 13；The feeding inlet 1
It is connected with predrying room 11；Predrying room 11 is connected with the first sifting barrel 7；First sifting barrel 7 passes through typhon cylinder isolation board 15
It is connected with 14 inner wall of roller；First sifting barrel 7 is connected with the ore grinding cylinder 8 of built-in milling medium；Ore grinding cylinder 8 and the second sifting barrel 9
It is connected；Second sifting barrel 9 is connected by one section without sieve area with crude product discharge gate 10；The side of the crude product discharge gate 10
Steam air intake 3 equipped with connection 13 entrance of header, another condensed water discharge outlet 4 for being equipped with the outlet of connection steam distribution chamber,
Heating steam is entered after header 13 by rotary joint, gas axis and directly distributes in hot steam to every heating tube 6, hot steam by
Discharge end flows to feed end, and condensed water then enters steam distribution chamber to discharge end by feed end against steam flow, passes through vapour axis, rotation
Adapter is discharged from condensed water discharge outlet 4；First sifting barrel 7, ore grinding cylinder 8 and second sifting barrel 9 is with steam pipe 6 same
On one axis, the inner tubal wall interval of perimeter wall and steam pipe 6, it is fine grained hothouse 12 that interval, which is formed by space, described
Fine grained hothouse 12 connect with predrying room 11 by typhon cylinder isolation board 15, by sieve respectively with the first sifting barrel
7 are connected to the second sifting barrel 9, are connect by inner tubal wall with ore grinding cylinder 8, and the lower part of fine grained hothouse 12 is equipped with dry fine grained
Product offtake 5.
The low-order coal drying and upgrading method of integration apparatus of the invention, the specific steps are as follows:
A. lignite is sent in the predrying room 11 rotated with roller from feeding inlet 1, is carried out first in predrying room 11
Preheating, lignite preheating in predrying room 11 simultaneously, constantly travel forward under the roller effect being obliquely installed, pass through
Fragmentation phenomenon when intergranular collision, mill stripping, the stirring and heating of steam pipe 6, generates a large amount of tiny particles；
B. the lignite for generating a large amount of fine particles passes through one section of typhon cylinder isolation board 15 in the end in pre-add hot cell 11
Enter the first sifting barrel 7 after the gradient, to guarantee lignite surface sufficiently dry, the sieve of free sticky property too the first sifting barrel 7 of big blocking；
With the rotation of roller 14, the lignite of fine particle constantly rolls in sifting barrel by the first sifting barrel 7, tiny at this time
Grain enters in fine grained hothouse 12 through sieve, and the bulky grain on sieve moves forward；
C. the bulky grain on sieve is entered in the ore grinding cylinder 8 equipped with milling medium by the first sifting barrel 7, and bulky grain lignite exists
By comminution in ore grinding cylinder 8, later, the toy trumpet cylinder one for preventing milling medium from entering by being connected to 9 inlet of the second sifting barrel
After the section gradient, enter in the second sifting barrel 9；The slot size of sieve is according to live real in first, second sifting barrel 7,9
Border situation is adjusted；The milling medium type in the ore grinding cylinder 8 be steel ball, steel watt, rod iron any one, according to entering
The thickness situation of material granularity is selected.
D. the sieve pore that a large amount of tiny particles that comminution generates pass through the second sifting barrel 9 drops into fine grained hothouse 12
Interior, remaining bulky grain moves forward on the second sifting barrel 9, is discharged outside bucket by crude product discharge gate 10, passes through belt
Conveyer backs within feeding inlet 1 and handles again；
E. the fine grained fallen in fine grained hothouse 12 is directly contacted with steam pipe 6, is constantly rolled with roller 14 same
When, act is constantly risen by the gas sprayed in steam pipe 6 and stirring travels forward, reaches maximum drying, finally by drying
Fine grained outlet 5 is discharged；
F. the moisture entered after gasifying in roller from steam pipe 6 giving up from 1 end of feeding inlet through the blower from being located at exhaust outlet
Port 2 is discharged.
Claims (7)
1. a kind of low-order coal drying and upgrading integration apparatus, including heating system, transmission system, roller (14), it is characterized in that:
It is furnished with steam pipe (6) on described roller (14) inner peripheral wall, the steam pipe (6) is arranged in roller in concentric circles
The predrying room (11) rotated together with roller, the first sifting barrel (7), ore grinding cylinder (8) and the are equipped on barrel, in roller (14)
The front of two sifting barrels (9), the steam pipe (6) is equipped with feeding inlet (1), and the top of feeding inlet (1) is equipped with waste gas outlet (2),
The rear portion of steam pipe (6) is equipped with crude product discharge gate (10), and crude product discharge gate (10) is connected with header (13)；Described enters
Material mouth (1) is connected with predrying room (11)；Predrying room (11) is connected with the first sifting barrel (7)；First sifting barrel (7) passes through big
Cone isolation board (15) is connected with roller (14) inner wall；Ore grinding cylinder (8) phase of first sifting barrel (7) and built-in milling medium
Even；Ore grinding cylinder (8) is connected with the second sifting barrel (9)；Second sifting barrel (9) and crude product discharge gate (10) pass through one section without sieve
Area is connected；The side of the crude product discharge gate (10) is equipped with the steam air intake (3) of connection header (13) entrance, Ling Yishe
There is the condensed water discharge outlet (4) of connection steam distribution chamber outlet, heats steam by rotary joint, gas axis and enter header (13)
Afterwards directly in distribution hot steam to every heating tube (6), hot steam flows to feed end by discharge end, and condensed water is then against steam flow
Enter steam distribution chamber to discharge end by feed end, is discharged by vapour axis, rotary joint from condensed water discharge outlet (4)；Described
First sifting barrel (7), ore grinding cylinder (8) and the second sifting barrel (9) and steam pipe (6) on the same axis, perimeter wall and steam
The inner tubal wall interval of (6) is managed, it is fine grained hothouse (12) that interval, which is formed by space, and the fine grained hothouse (12) is logical
Excessive cone isolation board (15) connect with predrying room (11), is sieved respectively with the first sifting barrel (7) and second by sieve
Cylinder (9) connection, is connect by inner tubal wall with ore grinding cylinder (8), and the lower part of fine grained hothouse (12) is equipped with dry fine grained product
Outlet (5).
2. a kind of low-order coal drying and upgrading integration apparatus according to claim 1, it is characterized in that: the ore grinding cylinder
(8) the toy trumpet cylinder baffle for preventing milling medium from entering in the second sifting barrel (9) is provided in.
3. a kind of low-order coal drying and upgrading integration apparatus according to claim 1, it is characterized in that: the roller (14) inclines
It tiltedly places, inclination angle is 2~10 °.
4. a kind of low-order coal drying and upgrading integration apparatus according to claim 1, it is characterized in that: the steam pipe
(6) it is arranged in roller barrel 1-3 circle in concentric circles.
5. a kind of low-order coal drying and upgrading method using integration apparatus described in claim 1, which is characterized in that including following
Step:
A. by lignite from feeding inlet (1) be sent to roller rotate predrying room (11) in, first predrying room (11) into
Row preheating, lignite predrying room (11) interior preheating simultaneously, be obliquely installed roller effect under constantly travel forward,
Fragmentation phenomenon when by intergranular collision, mill stripping, the stirring and heating of steam pipe (6), generates a large amount of tiny particles；
B. the lignite for generating a large amount of fine particles passes through one section of typhon cylinder isolation board (15) in the end of pre-add hot cell (11)
Enter the first sifting barrel (7) after the gradient, to guarantee lignite surface sufficiently dry, the too big blocking the first sifting barrel (7) of free sticky property
Sieve；With the rotation of roller (14), the lignite of fine particle constantly rolls in sifting barrel by the first sifting barrel (7), carefully
Small particle enters in fine grained hothouse (12) through sieve, and the bulky grain on sieve moves forward；
C. the bulky grain on sieve is entered in the ore grinding cylinder (8) equipped with milling medium by the first sifting barrel (7), and bulky grain lignite exists
By comminution in ore grinding cylinder (8), later, the toy trumpet for preventing milling medium from entering by being connected to the second sifting barrel (9) inlet
After one section of gradient of cylinder, enter in the second sifting barrel (9)；
D. the sieve pore that a large amount of tiny particles that comminution generates pass through the second sifting barrel (9) drops into fine grained hothouse (12)
Interior, remaining bulky grain moves forward on the second sifting barrel (9), is discharged outside bucket, is passed through by crude product discharge gate (10)
Belt conveyor backs within feeding inlet (1) and handles again；
E. the fine grained fallen in fine grained hothouse (12) is directly contacted with steam pipe (6), is constantly rolled with roller (14)
Meanwhile act is constantly risen by the gas sprayed in steam pipe (6) and stirring travels forward, reach maximum drying, finally by
Dry fine grained outlet (5) discharge；
F. enter the moisture in roller after gasification from steam pipe (6) to give up through what the blower from being located at exhaust outlet was held from feeding inlet (1)
Port (2) discharge.
6. the low-order coal drying and upgrading method of one kind according to claim 5, it is characterized in that: first, second screening
The slot size of sieve is adjusted according to on-site actual situations in cylinder (7,9).
7. the low-order coal drying and upgrading method of one kind according to claim 5, it is characterized in that: described be mounted in ore grinding cylinder (8)
In milling medium type be steel ball, steel watt, rod iron any one, selected according to the thickness situation of material size.
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|---|---|---|---|
| CN201811524560.1A CN109682167B (en) | 2018-12-13 | 2018-12-13 | A kind of low-order coal drying and upgrading integration apparatus and method |
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| CN201811524560.1A CN109682167B (en) | 2018-12-13 | 2018-12-13 | A kind of low-order coal drying and upgrading integration apparatus and method |
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| CN109682167B CN109682167B (en) | 2019-10-29 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111678311A (en) * | 2020-07-17 | 2020-09-18 | 王荣之 | Rotary heat-conducting oil boiler tube array dryer integrated device |
| CN115164540A (en) * | 2021-04-02 | 2022-10-11 | 中冶长天国际工程有限责任公司 | Lump ore pretreatment system and pretreatment method based on inner container type rotary kiln |
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| US5580242A (en) * | 1993-12-11 | 1996-12-03 | Babcock Bsh Aktiengesellschaft | Rotary kiln |
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| CN205448495U (en) * | 2015-12-30 | 2016-08-10 | 奥瑞（天津）工业技术有限公司 | Coal slime drum dryer strengthens reducing mechanism |
Cited By (3)
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| CN111678311A (en) * | 2020-07-17 | 2020-09-18 | 王荣之 | Rotary heat-conducting oil boiler tube array dryer integrated device |
| CN115164540A (en) * | 2021-04-02 | 2022-10-11 | 中冶长天国际工程有限责任公司 | Lump ore pretreatment system and pretreatment method based on inner container type rotary kiln |
| CN115164540B (en) * | 2021-04-02 | 2023-06-23 | 中冶长天国际工程有限责任公司 | Block ore pretreatment system and pretreatment method based on liner rotary kiln |
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