CN105689155B - Multi-product flotation column separation equipment and method - Google Patents
Multi-product flotation column separation equipment and method Download PDFInfo
- Publication number
- CN105689155B CN105689155B CN201610218814.1A CN201610218814A CN105689155B CN 105689155 B CN105689155 B CN 105689155B CN 201610218814 A CN201610218814 A CN 201610218814A CN 105689155 B CN105689155 B CN 105689155B
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- bubble
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- 238000005188 flotation Methods 0.000 title claims abstract description 34
- 238000000034 method Methods 0.000 title claims description 13
- 238000000926 separation method Methods 0.000 title description 12
- 239000003245 coal Substances 0.000 claims abstract description 26
- 239000012141 concentrate Substances 0.000 claims abstract description 19
- 238000009826 distribution Methods 0.000 claims abstract description 14
- 238000000605 extraction Methods 0.000 claims abstract description 10
- 239000006260 foam Substances 0.000 claims abstract description 10
- 229910052500 inorganic mineral Inorganic materials 0.000 claims description 22
- 239000011707 mineral Substances 0.000 claims description 22
- 238000007667 floating Methods 0.000 claims description 12
- 239000002002 slurry Substances 0.000 claims description 8
- 239000000284 extract Substances 0.000 claims description 6
- 230000008569 process Effects 0.000 claims description 5
- 239000002245 particle Substances 0.000 claims description 4
- 238000004062 sedimentation Methods 0.000 claims description 4
- 238000009825 accumulation Methods 0.000 claims description 3
- 230000015572 biosynthetic process Effects 0.000 claims description 2
- 230000000087 stabilizing effect Effects 0.000 abstract 2
- 238000004140 cleaning Methods 0.000 description 3
- 238000010276 construction Methods 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 238000010348 incorporation Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000005065 mining Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000007670 refining Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 238000005273 aeration Methods 0.000 description 1
- 210000005056 cell body Anatomy 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000004503 fine granule Substances 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03D—FLOTATION; DIFFERENTIAL SEDIMENTATION
- B03D1/00—Flotation
- B03D1/14—Flotation machines
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03D—FLOTATION; DIFFERENTIAL SEDIMENTATION
- B03D1/00—Flotation
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Biotechnology (AREA)
- Separation Of Solids By Using Liquids Or Pneumatic Power (AREA)
- Physical Water Treatments (AREA)
Abstract
The device comprises a roughing column and a fine column sleeved outside the roughing column, wherein a feeding pipe is arranged at the upper part of the roughing column, a tailing discharge pipe is arranged at the bottom of the roughing column, a circulating pulp extraction pipe and a circulating pulp feeding pipe are arranged at the lower part of the roughing column, the circulating pulp extraction pipe and the circulating pulp feeding pipe are communicated through a circulating pulp pump, a pressure gauge and a bubble generator, a flow stabilizing plate and a conical cylinder are further arranged inside the roughing column, the flow stabilizing plate is positioned above the circulating pulp extraction pipe, the conical cylinder is positioned between the circulating pulp extraction pipe and the circulating pulp feeding pipe, the top of the fine column is provided with a foam concentrate, the bottom of the fine collection tank is provided with a middling discharge pipe, and a gas distribution pipe communicated with an air pump is further arranged at the position, close to the bottom, of the inner side of the fine column. The invention has simple structure and convenient operation, can flexibly adjust the product structure and effectively solves the problems of clean coal entrainment and tailing coal leakage in the prior multi-product flotation.
Description
Technical field
The present invention relates to multi-product flotation column apparatus and method for, the high grey thin mud content that is particularly suitable for use in is big, microfine
The sorting of coal slime.
Background technology
With the raising of Mechanized Coal Mining Operation in China degree, the intensification of mining depth, raw coal quality is deteriorated, it is primary in raw coal and
Secondary particulate fine coal content is more and more, therefore the economic benefit of coal preparation plant is directly connected to the efficient separation of particulate fine coal asks
Topic.
Flotation is the most effectual way for realizing slime separation at present, and conventional floatation equipment has flotation device and flotation column.Flotation
There is following defect in machine：Flotation device multiple-grooved is connected, equal to the power of motor of last room, stirring intensity, aeration quantity from the first Room
It is identical, it is impossible to which that meet material floats characteristic with assorting room more and more poor sorting requirement；Flotation device cell body is shallow, cleaned coal foam
Thin, the non-foam refining process of layer；The high grey thin mud of entrainment is more in foam, and poor selectivity, the efficiency of separation is low；Impeller and nozzle wear are tight
Weight, maintenance load is big, and maintenance cost is high；Floor space is big, needs space for maintenance big, and construction investment is high；Power consumption is big, therefore
Traditional flotation device has no longer adapted to the flotation of coal slime after gravity separation technology is changed.
Practical application is wider at the scene for the rotational flow microbubble flotation column that China develops in recent years, its clustered column flotation, rotational flow sorting
It is integrated with pipe stream mineralising, realizes step optimization sorting, not only increases the efficiency of separation, and sorting particle size range is further prolonged
Micron order is reached, the sorting of fine granule material after heavy media technique reform is particularly suitable for use in.Multi-product flotation column is by roughing
Obtained product progress is selected, and sorting obtains three products, can adapt to high concentration, high grey thin mud content big, poor selectivity
The floatation equipment of slime separation.Assorting room is completed in two cylinders, by controlling the height of tailing tank and the height of chats case
Spend to adjust the discharge capacity of froth bed thickness and bis flotation, and then adjust the quality of concentrate.At selected section, part entrainment or
The grey thin mud of height of poor selectivity comes off as chats for selected section from foam, so as to improve the efficiency of separation.For the 3rd product-
The processing method of chats can be according to its ash content height separately as middle product of coal or incorporation tail coal.
When sorting difficult separation coal mud, existing multi-product flotation column can not adjust column structure regulation product matter at any time
Amount, and there are problems that cleaned coal entrainment and tail coal run coal.
The content of the invention
Goal of the invention：The invention aims to overcome weak point of the prior art, there is provided a kind of simple in construction, behaviour
Make convenient, energy flexible modulation product structure, effectively solve the problems, such as that cleaned coal entrainment and tail coal run flotation column equipment and the side of coal
Method.
To achieve these goals, present invention employs following technical scheme：A kind of multi-product flotation column equipment,
Including flotation column, the flotation column includes roughing post and the selected post being set on the outside of roughing post, and roughing post top is provided through
The feeding pipe of selected post, roughing column bottom is provided with the mine tailing drainage conduit that is connected with tailing tank, and roughing post bottom is from top to bottom successively
Pipe is extracted out provided with circulation ore pulp and circulation ore pulp feeds pipe, and the circulation ore pulp feeds pipe along roughing column wall tangential direction cloth
Put, circulation ore pulp is extracted pipe out and circulated between ore pulp feeds pipe and connected by circulating ore slurry pump, pressure gauge with bubble generator,
Stabilier and conically shaped are additionally provided with inside roughing post, stabilier is located at circulation ore pulp and extracted out above pipe, and conically shaped is located at circulation ore deposit
Slurry extraction pipe and circulation ore pulp are fed between pipe, and selected column top is provided with froth concentrate collecting tank, and selected column bottom is communicated with
The gas distribution pipe of connection inflator pump, gas distribution tube wall are additionally provided with the inside of the chats drainage conduit of chats case, selected post close to bottom position
Offer aperture.
Further, the diameter ratio of the roughing post and selected post is 1:1.2~1:2.
According to the method for separating of above-mentioned multi-product flotation column, comprise the following steps：
A, ore pulp are settled downwards by feeding pipe into roughing post, and pipe is extracted out from circulation ore pulp in the presence of circulation ore slurry pump
Extract out and pressurize, flow through pressure gauge and bubble generator, feeding pipe by the circulation ore pulp arranged in roughing column wall tangent line beats
Enter roughing post to circulate to form the eddy flow field of force, can float mineral grain and bubble adhere to be formed mineral laden bubble to eddy flow central motion and on
It is floating, carry out repeating sorting by floating on the inside of conically shaped and floating up to roughing post top by stabilier, suppressed by stabilier
The violent swirling motion of bottom ore pulp, the liter floating ring border of relative quiescent is created for the mineral laden bubble of floating, weighs product along roughing post
The downward eddy flow of inwall, finally turns into product from failing from tailing tank discharge；
The mineral laden bubble produced in b, roughing post along cylinder continue float, in floating-upward process along with bubble merger and
Vanish, constantly carry out sedimentation sorting and post sorting, remove the grey thin mud of height of a part of entraining air bubbles, complete to mineralising gas
The first time of bubble is selected；The mineral laden bubble for completing primary cleaning continues to float up to roughing column top and accumulates to form concentrate froth bed,
Now the preferable cleaned coal particle of floatability carries out selected with foam overflow to selected post；
C, the froth bed of the mineralising produced by roughing post fall into selected column bottom in the case of deadweight, and now, air is by filling
Air pump feeds gas distribution pipe, on gas distribution tube wall in the presence of aperture, uniformly feeds in ore pulp, the best ore deposit of floatability
Composition granule finally adheres to bubble to be formed mineral laden bubble and moves and float upwards, realizes selected, to ultimately form concentrate foam
Layer overflows from selected post, is collected by froth concentrate collecting tank, and chats turns into chats product from the discharge of chats case.
As a result of above technical scheme, have the following advantages that：
1st, using the combination of a variety of sorting modes, efficiently solve flotation it is big to high concentration, high grey thin mud content and
During the slime separation of poor selectivity the problem of cleaned coal entrainment, tail coal band coal.Mineral laden bubble through adverse current collision mineralising formation rises floating
To roughing post, pulp density reduction and density variation increase, the grey thin mud of height of mechanical entrapment is due to Action of Gravity Field terminal velocity
Come off from bubble greatly, reduce the pollution to concentrate product, complete primary cleaning.At the top of into cylinder after the froth bed of accumulation,
The bottom of selected post is dropped into by deadweight, is completed selected；
2nd, by the way of selected, the continuous circulation that not only efficiently avoid the grey thin mud of height that traditional single-column body is present is made
All it is difficult to satisfactory to both parties phenomenon into concentrate and tailings, and increases the treating capacity of flotation column, while also increasing chats product, increases
Add product structure, reduce capital expenditure；
3rd, essence, mine tailing quality can be ensured simultaneously.The equipment can by adjust tailing tank height ensure mine tailing quality and
The quality of selected pan feeding, in refining process, can ensure that final concentrate quality by adjusting the height of chats case and obtain
Chats.Chats product can consider whether individually processing or incorporation essence, product from failing according to its quality, therefore finally can obtain three
Product or two products, product structure can be adjusted flexibly；
4th, simple in construction, simple operation, additionaling power and reagent consumption are not required to, preferably solve the efficiency of separation and energy
Contradiction between consumption, medicine consumption.Select the efficiency of separation high again rough concentrate, it is ensured that final concentrate quality.
Brief description of the drawings
Fig. 1 is the multi-product flotation column structural representation of the present invention；
In figure：1- froth concentrate collecting tanks；The selected posts of 2-；3- chats casees；4- circulation ore pulps extract pipe out；5 circulation ore slurry pumps；
6- bubble generators；7- pressure gauges；8- circulation ore pulps feed pipe；9- roughing posts；10- feeding pipes；11- gas distribution pipes；12- is inflated
Pump；13- stabiliers；14- conically shapeds；15- tailing tanks.
Embodiment：
The present invention is done below in conjunction with the accompanying drawings and further explained.
As shown in figure 1, a kind of multi-product flotation column equipment of the present invention, including flotation column, the flotation column includes
Roughing post 9 and the selected post 2 for being set in the outside of roughing post 9.The diameter ratio of wherein roughing post 9 and selected post 2 can be according to mineral
Floatability is adjusted, and diameter ratio is 1:1.2~1:2.
The top of roughing post 9 is provided through the feeding pipe 10 of selected post 2, and the bottom of roughing post 9 is provided with what is connected with tailing tank 15
Mine tailing drainage conduit, the bottom of roughing post 9 is from top to bottom sequentially provided with circulation ore pulp extraction pipe 4 and circulation ore pulp feeds pipe 8, wherein institute
State circulation ore pulp feed pipe 8 along the inwall tangential direction of roughing post 9 arrange, circulation ore pulp extract out pipe 4 and circulation ore pulp feed pipe 8 it
Between connected by circulating ore slurry pump 5, pressure gauge 7 with bubble generator 6, stabilier 13 and taper are additionally provided with inside roughing post 9
Cylinder 14, stabilier 13, which is located at, circulates the top of ore pulp extraction pipe 4, and conically shaped 14 is located at circulation ore pulp extraction pipe 4 and circulation ore pulp and given
Enter between pipe 8.
The selected top of post 2 is provided with froth concentrate collecting tank 1, and the selected bottom of post 2 is communicated with the chats discharge of chats case 3
Pipe, the selected inner side of post 2 is additionally provided with the gas distribution pipe 11 of connection inflator pump 12 close to bottom position, and the tube wall of gas distribution pipe 11 offers small
Hole.
According to the method for separating of above-mentioned multi-product flotation column, comprise the following steps：
A, ore pulp enter the sedimentation downwards of roughing post 9 by feeding pipe 10, are taken out in the presence of circulation ore slurry pump 5 from circulation ore pulp
Outlet pipe 4 is extracted out and pressurizeed, and flows through pressure gauge 7 and bubble generator 6, passes through the circulation ore pulp arranged in the inwall tangent line of roughing post 9
Feed pipe 8 and squeeze into the circulation of roughing post 9 and form the eddy flow field of force, mineral grain and bubble can be floated and adhere to form mineral laden bubble into eddy flow
The heart is moved and floated, and being floated by the inner side of conically shaped 14 and floating up to the top of roughing post 9 by stabilier 13 carries out repeating sorting,
Ore pulp violent swirling motion in bottom is suppressed by stabilier 13, the liter floating ring of relative quiescent is created for the mineral laden bubble of floating
Border, weight product finally turns into product from failing along the downward eddy flow of the inwall of roughing post 9 from the discharge of tailing tank 15；
The mineral laden bubble produced in b, roughing post 9 continues to float along cylinder, along with the merger of bubble in floating-upward process
And vanish, sedimentation sorting and post sorting are constantly carried out, the grey thin mud of height of a part of entraining air bubbles is removed, completes to mineralising
The first time of bubble is selected；The mineral laden bubble of completion primary cleaning continues to float up to accumulation at the top of roughing post 9 and forms concentrate foam
Layer, now the preferable cleaned coal particle of floatability carries out selected with foam overflow to selected post 2；
C, the froth bed of the mineralising produced by roughing post fall into selected column bottom in the case of deadweight, and now, air is by filling
Air pump 12 feeds gas distribution pipe 11, on the tube wall of gas distribution pipe 11 in the presence of aperture, uniformly feeds in ore pulp, floatability is most
Good mineral grain finally adheres to bubble to be formed mineral laden bubble and moves and float upwards, realizes selected, to ultimately form essence
Ore deposit froth bed overflows from selected post 2, is collected by froth concentrate collecting tank 1, and chats turns into Mineral from the discharge of chats case 3
Product.
Described above is only the preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, under the premise without departing from the principles of the invention, some improvements and modifications can also be made, these improvements and modifications also should
It is considered as protection scope of the present invention.
Claims (3)
1. a kind of multi-product flotation column equipment, including flotation column, it is characterised in that：The flotation column includes roughing post (9)
With the selected post (2) being set on the outside of roughing post (9), roughing post (9) top is provided through the feeding pipe (10) of selected post (2),
Roughing post (9) bottom is provided with the mine tailing drainage conduit connected with tailing tank (15), and roughing post (9) bottom is from top to bottom sequentially provided with and followed
Ring ore pulp extracts pipe (4) out and circulation ore pulp feeds pipe (8), and the circulation ore pulp feeds pipe (8) along roughing post (9) inwall tangent line side
To arrangement, circulation ore pulp extract pipe (4) out and circulate ore pulp feed between pipe (8) by circulate ore slurry pump (5), pressure gauge (7) and
Bubble generator (6) is connected, and is additionally provided with stabilier (13) and conically shaped (14) inside roughing post (9), stabilier (13) is located at
Circulate above ore pulp extraction pipe (4), conically shaped (14) is fed positioned at circulation ore pulp extraction pipe (4) and circulation ore pulp between pipe (8),
Froth concentrate collecting tank (1) is provided with the top of selected post (2), selected post (2) bottom is communicated with the chats discharge of chats case (3)
The gas distribution pipe (11) of connection inflator pump (12) is additionally provided with the inside of pipe, selected post (2) close to bottom position, gas distribution pipe (11) tube wall is opened
Provided with aperture.
2. a kind of multi-product flotation column equipment according to claim 1, it is characterised in that：The roughing post (9) and
The diameter ratio of selected post (2) is 1:1.2~1:2.
3. the method for separating of multi-product flotation column according to claim 1, it is characterised in that comprise the following steps：
A, ore pulp enter roughing post (9) by feeding pipe (10) and settled downwards, from circulation ore pulp in the presence of circulation ore slurry pump (5)
Extract pipe (4) out to extract out and pressurize, flow through pressure gauge (7) and bubble generator (6), by being arranged in roughing post (9) inwall tangent line
Circulation ore pulp feed pipe (8) and squeeze into roughing post (9) circulation and form the eddy flow field of force, mineral grain and bubble can be floated and adhere to form ore deposit
Bubble is to eddy flow central motion and floats for change, by being floated on the inside of conically shaped (14) and floating up to roughing post by stabilier (13)
(9) top carries out repeating sorting, suppresses the violent swirling motion of bottom ore pulp by stabilier (13), for the mineral laden bubble of floating
The liter floating ring border of relative quiescent is created, weight product finally turns into along the downward eddy flow of roughing post (9) inwall from tailing tank (15) discharge
Product from failing；
The mineral laden bubble produced in b, roughing post (9) continues to float along cylinder, in floating-upward process along with bubble merger and
Vanish, constantly carry out sedimentation sorting and post sorting, remove the grey thin mud of height of a part of entraining air bubbles, complete to mineralising gas
The first time of bubble is selected；Mineral laden bubble selected for the first time is completed to continue to float up to the accumulation formation of roughing post (9) top for the first time
Selected concentrate froth bed, now the preferable cleaned coal particle of floatability is selected for the second time to selected post (2) progress with foam overflow；
C, the froth bed of the mineralising produced by roughing post fall into selected column bottom in the case of deadweight, and now, air is by inflator pump
(12) gas distribution pipe (11) is fed, on gas distribution pipe (11) tube wall in the presence of aperture, is uniformly fed in ore pulp, floatability
Best mineral grain finally adheres to bubble to be formed mineral laden bubble and moves and float upwards, realize second it is selected, finally
The second selected concentrate froth bed formed overflows from selected post (2), is collected by froth concentrate collecting tank (1), and chats from
Chats case (3) discharge turns into chats product.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610218814.1A CN105689155B (en) | 2016-04-08 | 2016-04-08 | Multi-product flotation column separation equipment and method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610218814.1A CN105689155B (en) | 2016-04-08 | 2016-04-08 | Multi-product flotation column separation equipment and method |
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| CN105689155A CN105689155A (en) | 2016-06-22 |
| CN105689155B true CN105689155B (en) | 2017-10-24 |
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| CN201610218814.1A Expired - Fee Related CN105689155B (en) | 2016-04-08 | 2016-04-08 | Multi-product flotation column separation equipment and method |
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| CN106840740A (en) * | 2017-03-24 | 2017-06-13 | 中国矿业大学 | Sample synchronous acquisition device and method in a kind of laboratory flotation column |
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| CN112973973B (en) * | 2021-03-18 | 2022-06-14 | 华能煤炭技术研究有限公司 | Centrifugal flotation machine and centrifugal flotation method |
| CN113499861B (en) * | 2021-05-24 | 2023-01-24 | 中南大学 | Coarse particle flotation equipment and method with turbulent flow and steady flow being fluidized cooperatively |
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| CN105689155A (en) | 2016-06-22 |
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