CN106861940A - Multi-product water-only cyclone is selected in a kind of underflow again - Google Patents
Multi-product water-only cyclone is selected in a kind of underflow again Download PDFInfo
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- CN106861940A CN106861940A CN201710085724.4A CN201710085724A CN106861940A CN 106861940 A CN106861940 A CN 106861940A CN 201710085724 A CN201710085724 A CN 201710085724A CN 106861940 A CN106861940 A CN 106861940A
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- cyclone
- underflow
- coal
- select
- roughing
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
- B04C—APPARATUS USING FREE VORTEX FLOW, e.g. CYCLONES
- B04C5/00—Apparatus in which the axial direction of the vortex is reversed
- B04C5/24—Multiple arrangement thereof
- B04C5/26—Multiple arrangement thereof for series flow
Abstract
Multi-product water-only cyclone is selected again the invention discloses a kind of underflow, select including roughing cyclone and again cyclone, roughing cyclone underflow connects selects cyclone again, and middle coal and the product of spoil two are selected through selecting bath to act on again, and one-time feeding can simultaneously realize out cleaned coal, middle coal, three products of spoil；It is described to select cyclone central overflow outlet again and select underflow opening coaxial with roughing cyclone underflow opening again, and direction is downward.The achievable one-time feeding of the present invention goes out cleaned coal, middle coal, three products of spoil simultaneously, and can be by adjusting one section of cyclone separator overflow pipe insertion depth, cyclone central overflow pipe insertion depth is selected again and selecting the yield and ash content of bath each product of Flow-rate adjustment again.When roughing cyclone overflow is connected with classifying cyclone, one-time feeding goes out cleaned coal, middle coal, four kinds of products of spoil and particulate overflow simultaneously.
Description
Technical field
Multi-product water-only cyclone is selected again the present invention relates to a kind of underflow, belongs to cyclone sorting classifying technical field.
Background technology
With the development and the continuous improvement of mining mechanization degree of China coal industry, fine coal content in raw coal by
Step increases.For some it is extremely difficult select coking coal, coal preparation plant crushes bulk materials to improve organic efficiency, purposefully to increase coal
With the dissociation degree of spoil, also cause -2 mm grain size contents increase in coal separation.According to statistics, coarse slime accounts for the left side of feed coal about 20%
The right side, cleaned coal is contained in this part coal slime（Ash content 10%）60% or so, if not dealing carefully with coarse slime, coal preparation plant's economy certainly will be influenceed
Benefit, also results in the waste of resource.The separation of coarse slime equipment of industrial application mainly has fine coal properties matter cyclone, spiral shell at present
Several kind equipments such as rotation separator, hindered bed separator and hydrocyclone.Hydrocyclone is due to structure and technological process
Simply, a certain degree of attention has been obtained in terms of separation of coarse slime, by structure optimization and improvement, the more traditional water of separating effect
Medium cyclone increases.
To shorten technological process, many scholars have developed the water cyclone of multi-form.A. Mainza etc.
Have studied the sorting classifying performance of double overflow pipe three-product cyclone.Position leather is old to be separated to the compound coal slime swirler of double overflow pipe
Performance has carried out system research, and the classification and sorting effect of separating structure is better than first sorting being classified knot afterwards after as a result showing first to be classified
Structure.King enters to have reported a kind of new two sections of separation of coarse slime cyclones, and its feature is the tertiary industry that single device realizes coarse slime simultaneously
Product are sorted and fine grading.Cui Guangwen etc. has invented separation of coarse slime classifying integrated machine, by hydrocyclone overflow kinetic energy
It is classified using eddy flow dewatering screen.It is bright etc. to have developed a kind of direct-connected three-product cyclone of overflow, by one section of overflow
Connecting tube installs guide vane additional, greatly improves two sections of classification efficiencies of cyclone, but one section of cyclone underflow amount is larger, causes
A small amount of cleaned coal loss.
Sorted for overflow more than multi-product hydrocyclone or be classified and realized, underflow is selected again and is realized
The research that multi-product is discharged simultaneously is less.
The content of the invention
The present invention is intended to provide multi-product water-only cyclone is selected in a kind of underflow again, it is used to solve one section of roughing that two can only be selected
Individual product, and the direct-connected increase of underflow load, the problem of low-density coal losses brought of roughing cyclone overflow, are capable of achieving once
Feed goes out cleaned coal, middle coal, four products of spoil and particulate overflow simultaneously.
Multi-product water-only cyclone is selected again the invention provides a kind of underflow, including roughing cyclone and select cyclone again,
Roughing cyclone underflow connects selects cyclone again, then selects cyclone top to be provided with flushometer, and flushometer includes jet water spout, flow
Meter and control valve；It is described to select cyclone central overflow outlet again, select underflow opening and roughing cyclone underflow opening coaxial again,
And direction is downward.Through select again bath act on select middle coal and the product of spoil two, can one-time feeding simultaneously realize out cleaned coal, in
Coal, three products of spoil.
In such scheme, the central overflow pipe for selecting cyclone again is taper, and upper end is bigger than lower end external diameter, central overflow
The interior bone of pipe is circle.Downwards during regulation overflow pipe, underflow opening sectional area reduces therewith, by overflow pipe position and underflow
The yield and ash content of coal and spoil in two products are selected in the change regulation of mouth sectional area again.
In such scheme, cleaned coal, middle coal and cash are accordingly adjusted by the cyclone insertion depth that selects again of overflow pipe in adjustment
The yield and ash content of stone.Described to select cyclone again, the relative insertion depth of central overflow pipe is -10~60mm.
In such scheme, the size for selecting cyclone bath flow again by adjustment accordingly adjusts cleaned coal, middle coal and spoil
Yield and ash content.It is described to select cyclone to wash by water flow for 0~1.2m again3·h-1。
In such scheme, the jet water spout of the flushometer is arranged on the top for selecting cyclone again, and bath inlet size is
Cyclone wall is selected tangentially to feed again in 10mm*8mm, bath edge.
In such scheme, diameter 150mm combinations（It is not limited to a kind of diameter）Roughing cyclone separator diameter 150mm, overflow
Pipe diameter 45mm（Needed to be changed between 30-60mm according to product ash content）, underflow tap diameter 8mm（According to product ash content need
Can be changed between 6-20mm）；Cyclone diameter 50mm is selected again（According to the optional greater or lesser diameter of sorting material property）,
Central overflow bore 10mm（It is optional）, top external diameter 18mm（It is optional）, lower external diameter 14mm（It is optional）, underflow opening is shaped as annular,
Sectional area can be in 100-300mm2Change, bath import 10mm*8mm（It is optional）, wash by water and tangentially fed along wall.
Present invention also offers another preferred scheme, i.e., multi-product water-only cyclone is selected in described underflow again, including thick
Select cyclone, classifying cyclone and select cyclone again, the direct-connected classifying cyclone of overflow pipe above roughing cyclone is classified eddy flow
Cleaned coal is flowed out at device bottom, and classifying cyclone overflow obtains particulate overflow product；Roughing cyclone underflow connects selects cyclone again, through selecting again
Middle coal and the product of spoil two are selected in bath effect, and one-time feeding realizes out cleaned coal, middle coal, four products of spoil and particulate overflow simultaneously
Product.
In such scheme, the water of the flushometer can derive from the particulate overflow portion of classifying cyclone.Or, then select
Water in water-rinsing process comes from coal separation recirculated water.
In such scheme, classifying cyclone diameter is identical with roughing cyclone, classifying cyclone feeding mouth equivalent aera with
Roughing cyclone overflow pipe area is close, and classifying cyclone overflow pipe and underflow tap diameter need to select according to classification.
Beneficial effects of the present invention：
The achievable one-time feeding of the present invention goes out cleaned coal, middle coal, four products of spoil and particulate overflow simultaneously, and can be by regulation
One section of cyclone separator overflow pipe insertion depth, cyclone central overflow pipe insertion depth is selected again and selects bath Flow-rate adjustment each again
The yield and ash content of product.When roughing cyclone overflow is not connected with classifying cyclone, one-time feeding go out simultaneously cleaned coal, in
Coal, three products of spoil.
Brief description of the drawings
Fig. 1 is roughing cyclone and selects hydrocyclone structure figure again.
Fig. 2 is the top view of Fig. 1.
Fig. 3 is three-product cyclone commercial Application flow chart.
Fig. 4 is roughing cyclone, selects cyclone and classifying cyclone connection figure again.
Fig. 5 is the top view of Fig. 4.
Fig. 6 is four product cyclone commercial Application flow charts.
Fig. 7 is to select cyclone sectional view again.
Overflow pipe relative position schematic diagram centered on Fig. 8.
1 is one section of feeding mouth in figure, and 2 is one section of overflow pipe, and 3 is one section of underflow opening, and 4 is jet water spout, and 5 is to select overflow again
Outlet, 6 is underflow discharge gate, and 7 is connecting tube, and 8 is two sections of feeding mouths, and 9 is two sections of overflow pipes, and 10 is two sections of underflow openings, and 11 are
Roughing cyclone, 12 to select cyclone again, and 13 is classifying cyclone, and 14 to choose heart overflow pipe import again, and 15 is to select underflow again
Mouthful.
Specific embodiment
The present invention is further illustrated below by embodiment and accompanying drawing, but is not limited to following examples.
As shown in Fig. 1 ~ 3, multi-product water-only cyclone is selected in a kind of underflow again, including roughing cyclone 11 and selects cyclone again
12, the underflow of roughing cyclone 11 connects and select again cyclone 12, then selects the top of cyclone 12 to be provided with flushometer, and flushometer includes punching
Water pipe, flowmeter and control valve；It is described to select cyclone central overflow outlet again and select underflow opening and roughing cyclone bottom again
Head piece is coaxial, and direction is downward.Middle coal and the product of spoil two are selected through selecting bath to act on again, can one-time feeding realization simultaneously
Go out cleaned coal, middle coal, three products of spoil.As shown in figure 1, one section of discharge cleaned coal of overflow pipe 2, then select overflow to export coal in 5 discharges,
Underflow discharge gate 6 discharges spoil.
In such scheme, the central overflow pipe for selecting cyclone again is taper, and upper end is bigger than lower end external diameter, central overflow
The interior bone of pipe is circle.As shown in Figure 7.Downwards during regulation overflow pipe, underflow opening sectional area reduces therewith, by overflow pipe
Select the yield and ash content of coal and spoil in two products again with the change regulation of underflow opening sectional area in position.The underflow of cyclone is selected again
Cone angle can change between 70 ° -120 ° as needed, and also can be using multiple cone.
In such scheme, by adjust central overflow pipe select again cyclone insertion depth accordingly adjust cleaned coal, middle coal and
The yield and ash content of spoil.Described to select cyclone again, the relative insertion depth of central overflow pipe is -10~60mm.
In such scheme, the size for selecting cyclone bath flow again by adjustment accordingly adjusts cleaned coal, middle coal and spoil
Yield and ash content.It is described to select cyclone to wash by water flow for 0~1.2m again3·h-1。
In such scheme, the jet water spout 4 of the flushometer is arranged on the top for selecting cyclone 12 again, inlet size of washing by water
It is 10mm*8mm, bath edge selects cyclone wall tangentially to feed again.
In such scheme, the roughing cyclone diameter 150mm, overfall tube diameter 45mm, underflow tap diameter 8mm；Select again
Cyclone diameter 50mm, central overflow bore 10mm, top external diameter 18mm, lower external diameter 14mm, underflow opening is shaped as annular, section
Product is 100-300mm2。
As shown in Fig. 4 ~ 6, present invention also offers another design, i.e., Jie's rotation of multi-product water is selected in described underflow again
Stream device, including roughing cyclone 11, classifying cyclone 13 and cyclone 12 is selected again, the overflow pipe of the top of roughing cyclone 11 is direct-connected
Classifying cyclone 13, the bottom of classifying cyclone 13 outflow cleaned coal, the underflow of roughing cyclone 11 connects and select again cyclone 12, through selecting bath again
Middle coal and the product of spoil two are selected in effect, and one-time feeding realizes out cleaned coal, middle coal, four products of spoil and fine grading overflow simultaneously
Product.As shown in figure 4, the upper end of roughing cyclone 11 be one section of overflow pipe 2, lower end be one section of underflow opening 3, the roughing overfall with
Classifying cyclone feeding mouth 8 is connected by connecting tube 7, the roughing cyclone underflow opening directly with select feeding mouth on cyclone again
Connection, Grading Overflow part is drawn and select again bath, then selects bath tangentially to be fed along wall.As shown in figure 4, two sections of rows of underflow opening 10
Spermiation coal, two sections of discharge classification particulate overflows of overflow pipe 9, then select overflow to export coal in 5 discharges, the discharge spoil of underflow discharge gate 6.
In such scheme, the water of the flushometer can derive from the particulate overflow portion of classifying cyclone.Or, then select
Water in water-rinsing process comes from coal separation recirculated water.
In such scheme, classifying cyclone diameter is identical with roughing cyclone, classifying cyclone feeding mouth equivalent aera with
Roughing cyclone overflow pipe area is close, and classifying cyclone overflow pipe and underflow tap diameter need to select according to classification.
Embodiment 1：
- 2mm grade coal samples are crushed to as research object with Tun Lan coal preparation plants feed coal, coal sample property is shown in Table 1.
The coal sample size of table 1 is constituted
As it can be seen from table 1 2-1mm grades inventory is relatively many and ash content is higher, the 30.42% of bulk sample is accounted for, ash content is
52.25%, remaining grade ash content difference is little and about 30%, coal sample weighted average ash content 38.61%.- 0.125mm materials
Content is less, accounts for the 18.56% of bulk sample.
Concentration (100gL in agitator-1) uniform ore pulp selects cyclone to becoming owner of through feed pump with pressure 0.1Mpa, pass through
Sorting is as the underflow based on the overflow comprising the coarse-fine coal of low-density and fine coal slurry and higher density coarse grain；It is main to select cyclone overflow
Classifying cyclone is directly entered by itself kinetic energy, overflow is turned into through classification（Fine coal slurry）With underflow（Coarse-fine coal）Product；Main choosing
Cyclone underflow is being washed by water from selecting cyclone center feed pipe to feed again（The overflow of portion hierarchy cyclone is pressurizeed through jet water pump）Shape
Into centrifugal force field in realize sorting, the middle coal of higher density discharged by central overflow pipe, and high density spoil is by tangential underflow pipe
Discharge.Each product is collected by Material collecting box for harvesting and returns to agitator formation circulation.It is main to select cyclone feed pressure and flow by frequency converter
Adjustment feed revolution speed realizes that pressure, flow value are by electromagnetic flowmeter, pressure gauge Real time displaying；Select again cyclone amount of flush water by
Control valve is adjusted, and amount of flush water is by suspended body flowmeter Real time displaying.
After after system stabilization, with underflow and overflow that voluminous product swirler is accessed in the time period, respectively with 1,0.5,0.25,
The standard screen of 0.125mm carries out wet sieving, and ash content is weighed and chemically examined after the drying of each grade material dewatering.
The relative position of central overflow pipe in reference picture 8, regulation chooses heart overflow pipe position can adjust and selects two products again again
The yield and ash content of middle coal and spoil, result of the test are shown in Table 2.
Keep bath uninterrupted 0.8m3·h-1, central overflow pipe gradually downward during, i.e., with respect to insertion depth
（Interface is bored with cylinder）It is gradually reduced, the sectional area of underflow opening is gradually reduced, counts each product of+0.125mm grades, the product of cleaned coal
Rate increases with ash content, and yield and the ash content of middle coal increase, and the yield of spoil reduces, ash content increase.Prove that regulation center is overflow
The relative position of flow tube, can adjust the yield and ash content for selecting coal and spoil in two products again.Also there is similar tune to cleans ash
Whole effect, small with respect to insertion depth, cleans ash is slightly higher.
The result of the test of table 2
。
Embodiment 2：
Such as process of the test and coal sample in embodiment 1.
Jet water pump and flush valve are selected by regulation again, observation bath flow meter reading, result of the test is shown in Table 3.Keep again
Phase selection is 10mm to insertion depth, wash by water for 0 when, then select the cyclone there is no sorting, only discharge a kind of product, all think
It is middle coal（Or spoil）.Gradually increase with bath flow, then select integral-rotation enhancing in cyclone, that is, sorting power gradually strengthens,
Statistics each product of+0.125mm grades, then select in two products that ash content difference gradually increases between coal and spoil, sort more thorough；Select again
Underflow spoil yield and ash content all increase, then select coal yield and ash content in central overflow all to reduce.Prove that regulation selects bath to flow again
Amount size, can adjust and select sorting power size and concentration in cyclone again, and then adjust the yield and ash content for selecting two products again.Punching
Water also has certain corrective action to cleans ash, and amount of flush water increase, cleans ash increases.
The result of the test of table 3
。
Embodiment 3
Such as three-product cyclone structure, Fig. 3 three-product cyclone commercial Application flows in Fig. 1.Coal slime backwater is introduced into tertiary industry
Product swirler is sorted, then selects cyclone underflow for spoil product, and last spoil is turned into after being dehydrated with high-frequency screen, and backwater is through tail
After the concentration of coal thickener, liquid portion can send into floatation system；Cyclone central overflow is selected again for middle product of coal, with coal in end
Turn into coal in end, backwater feeding floatation system after centrifuge dewatering；Roughing overflow is pumped up into hydrocyclone, hydraulic cyclone
Device underflow turns into final head coal product by cleaned coal centrifuge after dehydration, hydrocyclone overflow is sorted into floatation system.
Embodiment 4
Such as four product hydrocyclone structures, four product cyclone commercial Application flow in Fig. 6 in Fig. 4.Coal slime backwater is introduced into four
Product cyclone group is sorted, then selects cyclone underflow for spoil product, and last spoil, backwater are turned into after being dehydrated with high-frequency screen
After being concentrated through tail coal thickener, liquid portion can send into floatation system；Cyclone central overflow is selected again for middle product of coal, with end
Turn into coal in end after middle coal centrifuge dewatering, backwater feeding floatation system needs to can also pass through tail coal thickener according to ash content；
Classifying cyclone underflow turns into final head coal product, classifying cyclone overflow by cleaned coal centrifuge after dehydration（Can part conduct
Bath is selected again）Floatation system sorting can be directly entered.
Claims (9)
1. multi-product water-only cyclone is selected in a kind of underflow again, it is characterised in that：Select including roughing cyclone and again cyclone, roughing
Cyclone underflow connects and selects cyclone again, then selects cyclone top to be provided with flushometer, flushometer include jet water spout, flowmeter and
Control valve；It is described to select cyclone central overflow outlet again, select underflow opening and roughing cyclone underflow opening coaxial again, and side
To downward.
2. multi-product water-only cyclone is selected in underflow according to claim 1 again, it is characterised in that：It is described to select cyclone again
Central overflow pipe is taper, and upper end is bigger than the external diameter of lower end, and the interior bone of central overflow pipe is circle.
3. multi-product water-only cyclone is selected in underflow according to claim 1 again, it is characterised in that：It is described to select cyclone again
In, the relative insertion depth of central overflow pipe is -10~60mm.
4. multi-product water-only cyclone is selected in underflow according to claim 1 again, it is characterised in that：It is described to select cyclone to rush again
Water-carrying capacity is 0~1.2m3·h-1。
5. multi-product water-only cyclone is selected in underflow according to claim 4 again, it is characterised in that：The flushometer is rushed
Water pipe is arranged on the top for selecting cyclone again, and bath inlet size is 10mm*8mm, and bath tangentially feeds along wall.
6. multi-product water-only cyclone is selected in underflow according to claim 1 again, it is characterised in that：The roughing cyclone is straight
Footpath 150mm, overfall tube diameter 45mm, underflow tap diameter 8mm；Cyclone diameter 50mm, central overflow bore 10mm are selected again, on
External diameter 18mm, lower external diameter 14mm, underflow opening is shaped as annular, and sectional area is 100-300mm2。
7. multi-product water-only cyclone is selected in the underflow according to any one of claim 1 ~ 6 again, it is characterised in that：Also include dividing
Level cyclone；The direct-connected classifying cyclone of overflow pipe above roughing cyclone, classifying cyclone bottom outflow cleaned coal, roughing cyclone
Underflow connects selects cyclone again, and middle coal and the product of spoil two are selected through selecting bath to act on again.
8. multi-product water-only cyclone is selected in underflow according to claim 7 again, it is characterised in that：The water of the flushometer
From the particulate overflow portion of classifying cyclone, or from coal separation recirculated water.
9. multi-product water-only cyclone is selected in underflow according to claim 7 again, it is characterised in that：Classifying cyclone diameter with
Roughing cyclone is identical, and classifying cyclone feeding mouth equivalent aera is identical with roughing cyclone overflow pipe area, classifying cyclone
Overflow pipe and underflow tap diameter need to select according to classification.
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108993763A (en) * | 2018-08-14 | 2018-12-14 | 中国恩菲工程技术有限公司 | Classifying cyclone, slime separation device, separation system and method for separating |
| 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 |
| CN110328062A (en) * | 2019-07-12 | 2019-10-15 | 东北大学 | A kind of rapidly and efficiently hydrocyclone |
| CN111375483A (en) * | 2020-03-19 | 2020-07-07 | 中国矿业大学 | Separation system and separation process for coal slime recovery |
| CN111420798A (en) * | 2020-04-10 | 2020-07-17 | 山东博选矿物资源技术开发有限公司 | System and process for recycling overflow clean coal slime of graded cyclone group |
| CN113083491A (en) * | 2021-03-30 | 2021-07-09 | 中国矿业大学 | Underground coal super-gravity field sorting system and sorting process |
| CN115889005A (en) * | 2023-03-09 | 2023-04-04 | 天津美腾科技股份有限公司 | Non-pressure three-product heavy medium cyclone and regulation and control method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108993763A (en) * | 2018-08-14 | 2018-12-14 | 中国恩菲工程技术有限公司 | Classifying cyclone, slime separation device, separation system and method for separating |
| CN108993763B (en) * | 2018-08-14 | 2024-03-19 | 中国恩菲工程技术有限公司 | Classifying cyclone, slime separation device, separation system and separation 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 |
| CN110328062A (en) * | 2019-07-12 | 2019-10-15 | 东北大学 | A kind of rapidly and efficiently hydrocyclone |
| CN111375483A (en) * | 2020-03-19 | 2020-07-07 | 中国矿业大学 | Separation system and separation process for coal slime recovery |
| CN111420798A (en) * | 2020-04-10 | 2020-07-17 | 山东博选矿物资源技术开发有限公司 | System and process for recycling overflow clean coal slime of graded cyclone group |
| CN113083491A (en) * | 2021-03-30 | 2021-07-09 | 中国矿业大学 | Underground coal super-gravity field sorting system and sorting process |
| CN115889005A (en) * | 2023-03-09 | 2023-04-04 | 天津美腾科技股份有限公司 | Non-pressure three-product heavy medium cyclone and regulation and control method thereof |
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