CN101590451A - Coal slime rotational flow reselecting column - Google Patents
Coal slime rotational flow reselecting column Download PDFInfo
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- CN101590451A CN101590451A CNA2009100738537A CN200910073853A CN101590451A CN 101590451 A CN101590451 A CN 101590451A CN A2009100738537 A CNA2009100738537 A CN A2009100738537A CN 200910073853 A CN200910073853 A CN 200910073853A CN 101590451 A CN101590451 A CN 101590451A
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- cylindrical shell
- reselecting
- rotational flow
- coal slime
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Abstract
A kind of coal slime rotational flow reselecting column, comprise coal slime rotational flow reselecting column cylindrical shell (4), the feeding pipe (3) that cylindrical shell (4) upper tangential is provided with, the inner overflow pipe that is provided with cylindrical shell (4) concentric of cylindrical shell (4), cylindrical shell (4) lower end is by the affixed hermetically cone parts such as (6) of adpting flange (11), offer circular base head piece (13) in cone (6) lower central, the cone (6) of cylindrical shell (4) lower end is set to oppositely bore again hydraulic jump structure (12), and this cone (6) design of oppositely boring hydraulic jump structure (12) again is positive cone-anti-awl-just tapered.The present invention introduces profundal zone gravity separation process with hydraulic jump, the vortex between jump first and the tail position that jumps that utilizes hydraulic jump to produce improves the diffusing pressure between the fine grained bed, strengthen the loose and layering of isolating of bed, the upwelling that entad rotates by the hydraulic jump back segment is realized the carrying separation of layering material has been improved the sharpness of separation and the efficiency of separation.
Description
Technical field
The invention belongs to Equipment for Separating Slime Coal, relate generally to a kind of coal slime gravity concentration apparatus, be specially a kind of coal slime rotational flow reselecting column.
Background technology
Along with Coal Mechanical melts the raising of the degree of adopting, raw coal fine fraction content increases gradually.Along with overcritical day by day to product quality of the intensification of mining depth and market, the corresponding change of former coal washability is difficult.And the requirement of existing Equipment for Separating Slime Coal and technology and efficient sorting still has certain gap, can't obtain the higher efficiency of separation and resource recovery.
At present, Chang Yong Bed for Fine Coal gravity separation equipment has minor diameter heavy medium cyclone, spiral, shaking table, hindered bed separator, hydrocyclone.Heavy medium cyclone needs higher feed pressure when material size is thin, energy consumption and equipment attrition are serious, and the mispairing of high density particulate in light product is comparatively serious, the product de-media difficulty and the sorting flow process complexity that heavily is situated between.Spiral only is suitable for highly dense sorting, during the low-density sorting loss of low-density particles in heavy product particularly serious, be difficult to adapt to the ature of coal situation of China, especially be not suitable for the coking coal sorting of China.The shaking table operation factors is many, and floor space is big, and unit capacity is low.Hindered bed separator material size scope is narrower, and the mispairing of high density particulate and low-density coarse grain was all more serious when the material size scope was wide slightly.The hydrocyclone sharpness of separation is lower.
The patent No. is that " coal separation with two feeding mouth hydrocyclone groups " used hydrocyclone cone section structure of 90201955.4 is the single hop wimble structure, sharpness of separation is lower, though it is adjustable that overflow pipe inserts the cylindrical shell degree of depth, regulate device such as leading screw and be positioned at liquid and flow inside, easy to wear.Nikkam Surish mentions that in " miningmagazine " (the 266th～268 page of third phase nineteen ninety) the awl section of compound hydrocyclone partly is divided into three sections, but the direction of three sections awls is identical and awl section bus angle reduces from top to bottom successively, loses easily by the compound cyclone of evidence the type coarse grain low-density thing when being used for by density separation.
Summary of the invention
The objective of the invention is problem at above-mentioned prior art existence, for reducing Bed for Fine Coal gravity separation granularity lower limit, reduce granularity to adverse effect by density separation, improve the independent sorting link of sharpness of separation, the particularly Bed for Fine Coal that between traditional gravity separation and flotation, increases a kind of high-efficiency reliable Equipment for Separating Slime Coal coal slime rotational flow reselecting column is provided.
The technical scheme that realizes the object of the invention is: coal slime rotational flow reselecting column of the present invention, comprise the coal slime rotational flow reselecting column cylindrical shell, the feeding pipe that the cylindrical shell upper tangential is provided with, the overflow pipe that inner barrel and cylindrical shell concentric are provided with, the cylindrical shell lower end offers the circular base head piece by the affixed parts such as cone in flange seal ground in the cone lower central.It is characterized in that: cylindrical shell lower end cone is set to oppositely bore again the hydraulic jump structure, and this taper designs of oppositely boring the hydraulic jump structure again is positive cone-anti-awl-just tapered.The overflow pipe that inner barrel and cylindrical shell concentric are provided with then is made up of interior overflow pipe and outer overflow sleeve pipe.Interior overflow pipe is fixed in the cylindrical shell upper end by the loam cake flange, overflow pipe outer wall in being set in to outer overflow bobbin seal, and its outer overflow casing support is connected with the adjusting support by leading screw.
The described hydraulic jump structure of oppositely boring again is along cone middle part circle designs.Oppositely boring the bus angle again is 120 °～170 °, and oppositely boring radical length again is 1/12～1/8 of coal slime rotational flow reselecting column barrel diameter.
The feeding pipe of described coal slime rotational flow reselecting column cylindrical shell upper tangential setting is square.Be positioned at cylindrical shell one side at this square tangential feeding pipe and be provided with slanting baffle.This slanting baffle and feeding pipe axis angle are 10 °～15 °.
Description of drawings
Fig. 1 is a coal slime rotational flow reselecting column structural representation of the present invention.
Fig. 2 is that the A of Fig. 1 is to view.
Fig. 3 is that the B of Fig. 1 is to view
Among the figure: the 1-adjusting handle; 2-regulates support; The 3-feeding pipe; The 4-cylindrical shell; The outer overflow sleeve pipe of 5-; The 6-cone; The 7-leading screw; The outer overflow casing support of 8-; Overflow pipe in the 9-; 10-loam cake flange; The 11-adpting flange; 12-oppositely bores the hydraulic jump structure again; The 13-underflow opening; Overflow pipe support in the 14-; The 15-slanting baffle.
The specific embodiment
Below in conjunction with accompanying drawing the present invention is described further.
Fig. 1 has provided the structure chart of coal slime rotational flow reselecting column of the present invention.Coal slime rotational flow reselecting column of the present invention comprises cylindrical shell 4, the feeding pipe 3 that cylindrical shell 4 upper tangential are provided with, the cylindrical shell 4 inner overflow pipes that are provided with cylindrical shell 4 concentrics, cylindrical shell 4 lower ends offer circular base head piece 13 by affixed hermetically cone 6 parts such as grade of adpting flange 11 in cone 6 lower central.The cone 6 of described coal slime rotational flow reselecting column cylindrical shell 4 lower ends is set to oppositely bore again hydraulic jump structure 12, and this cone 6 design of oppositely boring hydraulic jump structure 12 again is positive cone-anti-awl-just tapered.The cylindrical shell 4 inner overflow pipes that are provided with cylindrical shell 4 concentrics are made up of interior overflow pipe 9 and outer overflow sleeve pipe 5.Be supported on the loam cake flange 10 by interior overflow pipe support 14 with the interior overflow pipe 9 of cylindrical shell 4 concentrics, and insert in the cavity of cylindrical shell 4 at the center of passing through loam cake flange 10.The outer wall of overflow pipe 9 in outer overflow sleeve pipe 5 is set in hermetically.The upper end of outer overflow sleeve pipe 5 is connected with outer overflow casing support 8, and the top of this outer overflow casing support 8 is connected with leading screw 7, and leading screw 7 is connected with adjusting support 2, and adjusting handle 1 is installed on it.
The described middle part circle designs of hydraulic jump structure 12 of oppositely boring again along cone 6.Oppositely boring the bus angle again is 120 °～170 °, and oppositely boring radical length again is 1/12～1/8 of coal slime rotational flow reselecting column cylindrical shell 4 diameters.
The feeding pipe 3 of described coal slime rotational flow reselecting column cylindrical shell 4 upper tangential settings is square.Be positioned at cylindrical shell 4 one sides at this square tangential feeding pipe 3 and be provided with slanting baffle 15.This slanting baffle 15 is 10 °～15 ° with the axis angle of feeding pipe 3.Square feeding pipe 3 makes the feeding mouth area narrow down to 1/2 of original area by slanting baffle 15 is set.
Described outer overflow sleeve pipe 5, outer overflow casing support 8, leading screw 7 and adjusting handle 1 are connected on the loam cake flange 10 of cylindrical shell 4 by regulating support 2.The lower end of cylindrical shell 4 is affixed by adpting flange 11 and cone 6.
The internal diameter of described outer overflow sleeve pipe 5 is 1/4～1/3 of coal slime rotational flow reselecting column cylindrical shell 4 diameters.It inserts the degree of depth of cylindrical shell 4 inside can adjust realization by leading screw 7.The adjusting range extreme lower position of outer overflow sleeve pipe 5 flushes with the lower edge of coal slime rotational flow reselecting column cylindrical shell 4, and the extreme higher position flushes with the axial centre face of coal slime rotational flow reselecting column cylindrical shell 4, promptly flushes with interior overflow pipe 9 lower edges.In this scope, insert the degree of depth of cylindrical shell 4 inside, in order to realize the adjustment of coal slime rotational flow reselecting column separating density by overflow sleeve pipe outside adjusting 5.
The height of described coal slime rotational flow reselecting column cylindrical shell 4 is 1.4～1.6 times of cylindrical shell 4 diameters.
The operation principle of coal slime rotational flow reselecting column of the present invention is as follows: Bed for Fine Coal and water are mixed into even ore pulp (0.10～0.15MPa) tangentially feed cylindrical shell 4 by feeding pipe 3 with certain pressure by slag stock pump or level pressure case.Because be subjected to the inhibition of cylindrical shell 4 walls, ore pulp forms rotation in cylindrical shell 4, under action of centrifugal force, finish by density stratification substantially when particle is thrown toward wall.Particle layers moves downward along the wall rotation of cylindrical shell 4, oppositely bores hydraulic jump structure 12 again through running into behind cone 6 upper semisections, and bed and liquid miscarriage unboiled water jump.Utilize revolving of hydraulic jump place to roll stream and increase relative shear speed between the bed particle, strengthen the particle layers loosening degree.This moment, the high density particulate was transferred to the particle layers bottommost, and simultaneously by the locus displacement, low-density is finished the layering of isolating than the top that floats to particle layers on the coarse granule.The VELOCITY DISTRIBUTION rule of entad rotating upwelling of oppositely boring the generation of hydraulic jump structure 12 back segments again is that gradient reduces from top to bottom, the bottom high density granular since near the very low upwelling that can not enter of wall flow velocity directly from underflow opening 13 is discharged body as the high density thing outside, thereby reduced the chance that this type of ore particle enters the low-density thing.The upper strata particle carries out hindered falling with the upwelling that entad rotates that hydraulic jump produces in the compound force field of gravitational field and centrifugal force field formation, the upper strata low-density particles is subjected to less gravity and centrifugal force owing to density is little, and the upper strata liquid flowing speed is bigger, the fluid drag force of entad rotating upwelling is done upwards and entad motion thereby can not overcome, and enters 9 one-tenth low-density products of interior overflow pipe of the outer overflow sleeve pipe 5 of reselecting column center setting.The intermediate density particle overcomes the fluid drag force and moves to wall owing to be subjected to bigger centrifugal force, enters the rotation sinking near cylindrical shell 4 or cone 6 tops once more, selects through oppositely boring hydraulic jump structure 12 again again again.The coal slime rotational flow reselecting column device integrates the roughly selecting of particle-selected-scan the sharpness of separation height.
The present invention introduces profundal zone gravity separation process with hydraulic jump, the vortex between jump first and the tail position that jumps that utilizes hydraulic jump to produce improves the diffusing pressure between the fine grained bed, strengthen the loose and layering of isolating of bed, realize the carrying separation of layering material by the upwelling that entad rotates of hydraulic jump back segment.The sharpness of separation and the efficiency of separation have been improved.
Claims (7)
1, a kind of coal slime rotational flow reselecting column, comprise coal slime rotational flow reselecting column cylindrical shell (4), the feeding pipe (3) that cylindrical shell (4) upper tangential is provided with, the inner overflow pipe that is provided with cylindrical shell (4) concentric of cylindrical shell (4), cylindrical shell (4) lower end offers circular base head piece (13) by the affixed cone parts such as (6) of adpting flange (11) sealing in cone (6) lower central; It is characterized in that: the cone (6) of coal slime rotational flow reselecting column cylindrical shell of the present invention (4) lower end is set to oppositely bore again hydraulic jump structure (12), and this cone (6) design of oppositely boring hydraulic jump structure (12) again is positive cone-anti-awl-just tapered; The inner overflow pipe that is provided with cylindrical shell (4) concentric of cylindrical shell (4) is made up of interior overflow pipe (9) and outer overflow sleeve pipe (5); Interior overflow pipe (9) is fixed in the upper end of cylindrical shell (4) by loam cake flange (10), and outer overflow sleeve pipe (5) is set in the outer wall of interior overflow pipe (9) hermetically, and outer overflow casing support (8) is connected with adjusting support (2) by leading screw (7).
2, coal slime rotational flow reselecting column according to claim 1, it is characterized in that: described middle part circle designs of oppositely boring hydraulic jump structure (12) again along cone (6), oppositely boring the bus angle again is 120 °～170 °, and oppositely boring radical length again is 1/12～1/8 of coal slime rotational flow reselecting column cylindrical shell (4) diameter.
3, coal slime rotational flow reselecting column according to claim 1 is characterized in that: overflow pipe (9) is fixing by interior overflow pipe support (14) and loam cake flange (10) in described, and insert in the cavity of cylindrical shell (4) at the center of passing through loam cake flange (10).
4, coal slime rotational flow reselecting column according to claim 1, it is characterized in that: the upper end of described outer overflow sleeve pipe (5) is connected with outer overflow casing support (8), top that should outer overflow casing support (8) is connected with leading screw (7), and leading screw (7) is connected with adjusting support (2) and by the adjusting handle that is threaded (1).
5, coal slime rotational flow reselecting column according to claim 1, it is characterized in that: the adjusting range of described outer overflow sleeve pipe (5) is that extreme lower position flushes with the lower edge of coal slime rotational flow reselecting column cylindrical shell (4), and the extreme higher position flushes with the axial centre face of coal slime rotational flow reselecting column cylindrical shell (4)
6, coal slime rotational flow reselecting column according to claim 1, it is characterized in that: the feeding pipe (3) that described coal slime rotational flow reselecting column cylindrical shell (4) upper tangential is provided with is square, be positioned at cylindrical shell (4) one sides at this square tangential feeding pipe (3) and be provided with slanting baffle (15), this slanting baffle (15) is 10 °～15 ° with the axis angle of feeding pipe (3).
7, coal slime rotational flow reselecting column according to claim 1 is characterized in that: the internal diameter of described outer overflow sleeve pipe (5) is 1/4～1/3 of coal slime rotational flow reselecting column cylindrical shell (a 4) diameter.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100738537A CN101590451B (en) | 2009-02-27 | 2009-02-27 | Coal slime rotational flow reselecting column |
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|---|---|---|---|
| CN2009100738537A CN101590451B (en) | 2009-02-27 | 2009-02-27 | Coal slime rotational flow reselecting column |
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| CN101590451A true CN101590451A (en) | 2009-12-02 |
| CN101590451B CN101590451B (en) | 2010-09-08 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106423595A (en) * | 2016-12-22 | 2017-02-22 | 武汉工程大学 | Cyclone separator |
| CN109092545A (en) * | 2018-07-20 | 2018-12-28 | 太原理工大学 | A kind of heavy floating combined sorting device and method |
| CN110013910A (en) * | 2019-03-22 | 2019-07-16 | 太原理工大学 | A kind of aqueous medium cyclone separator of separating density on-line control |
| CN112676050A (en) * | 2020-09-25 | 2021-04-20 | 乌拉特中旗浩通清洁能源有限公司 | Coal slime sorting system |
| CN117085866A (en) * | 2023-10-17 | 2023-11-21 | 太原理工大学 | Multifunctional fusiform cyclone |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SE434709B (en) * | 1981-12-04 | 1984-08-13 | Celleco Ab | HYDROCYCLONE CLONER FOR PURPOSING PENSION SUSPENSION WITH HIGH FIBER CONTENT |
| CN2068016U (en) * | 1990-02-23 | 1990-12-26 | 煤炭科学研究总院唐山分院 | Double feed port water media cyclone group for coal washery |
| CN2227987Y (en) * | 1995-05-05 | 1996-05-29 | 鞍山钢铁学院 | Hydraulic cyclone |
| CN2257743Y (en) * | 1996-03-30 | 1997-07-16 | 钟会平 | Concentrating grading swirler |
| CN2317946Y (en) * | 1997-08-09 | 1999-05-12 | 李振山 | Heavy-medium cyclone |
-
2009
- 2009-02-27 CN CN2009100738537A patent/CN101590451B/en active Active
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106423595A (en) * | 2016-12-22 | 2017-02-22 | 武汉工程大学 | Cyclone separator |
| CN109092545A (en) * | 2018-07-20 | 2018-12-28 | 太原理工大学 | A kind of heavy floating combined sorting device and method |
| CN110013910A (en) * | 2019-03-22 | 2019-07-16 | 太原理工大学 | A kind of aqueous medium cyclone separator of separating density on-line control |
| CN112676050A (en) * | 2020-09-25 | 2021-04-20 | 乌拉特中旗浩通清洁能源有限公司 | Coal slime sorting system |
| CN112676050B (en) * | 2020-09-25 | 2023-01-03 | 乌拉特中旗浩通清洁能源有限公司 | Coal slime sorting system |
| CN117085866A (en) * | 2023-10-17 | 2023-11-21 | 太原理工大学 | Multifunctional fusiform cyclone |
| CN117085866B (en) * | 2023-10-17 | 2024-01-30 | 太原理工大学 | Multifunctional fusiform cyclone |
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| CN101590451B (en) | 2010-09-08 |
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