CN207013125U - A kind of improved shallow-tank separator - Google Patents
A kind of improved shallow-tank separator Download PDFInfo
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- CN207013125U CN207013125U CN201720247351.1U CN201720247351U CN207013125U CN 207013125 U CN207013125 U CN 207013125U CN 201720247351 U CN201720247351 U CN 201720247351U CN 207013125 U CN207013125 U CN 207013125U
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Abstract
The utility model provides a kind of improved shallow-tank separator, shallow-tank separator bottom and side set cloth flowing plate 1 with holes respectively, bottom corresponding to the cloth flowing plate perforate of bottom sets cloth stream funnel 2, internal suspension is fed in sorting groove body by the cloth flowing plate with holes of shallow slot bottom and side, the suspension that the shallow slot bottom of shallow-tank separator is fed forms upper up-flow, the effect of upper up-flow is to maintain effect suspension stabilization, uniformly, while plays the role of scattered pan feeding；The suspension fed from the shallow slot side of shallow-tank separator forms level stream, pass through the counterattack and limitation of level stream cloth hopper, level stream is set to uniformly enter in shallow slot, it is stable that the effect of level stream is to maintain shallow slot cell body top density of suspending liquid, the horizontal media stream from feeding end to exhaust end is formed simultaneously, starts shipment upper floating cleaned coal defeated effect.
Description
Technical field
The shallow-tank separator of a kind of block of raw coal is the utility model is related to, belongs to Concentrating Field.
Background technology
The general lower limit of separation of coal preparation plant's shallow-tank separator is 13mm, or even in some coal preparation plant's lowers limit of separation is 25mm.Thing
The ore particle that some granularities are big, density is small, the ore particle that one-size is small, density is big often be present in free settling delaminating process in material
With the phenomenon of identical sinking speed sedimentation, the heavy phenomenons such as this imagination is called.Density is different with granularity but is sunk with identical
The ore particle of reduction of speed degree be referred to as etc. heavy particle.Etc. in heavy particle, the ratio between the granularity of small density ore particle and granularity of big density ore particle, claim
For free settling equal settling factor, often with e0(＞ 1) is represented.
After wide grade material enters in heavy-media suspension, it is layered by density and hindered falling speed difference, bottom is
Pure weight product, upper strata are pure light products.Intermediate layer is intermixed layer, wherein there is low-density product, also there is high density production
Thing, this is wide grade mixed material under medium flow field effect, the knot that various particles are layered by the size of its hindered falling speed
Fruit, the weight particle of hybrid state is in intermixed layer in each small streak, because it has identical hindered falling speed, therefore claims it
For the heavy particle such as hindered falling.Their fineness ratio is referred to as hindered falling equal settling factor, with egRepresent.Hindered falling equal settling factor is always
Increase more than free settling equal settling factor, and with the increase of concentration by volume, reduce with the reduction of concentration by volume.
For the certain high density ore particle of density, granularity, hindered falling ratio is bigger, the granularity of its corresponding low-density ore particle
It is bigger.
When etc. heavy phenomenon occur after, the different ore particle of density is mixed in together in heavy-media suspension, can not realize and press
Density is layered.
Delaminating process of the material in shallow slot depends primarily on its density, but if the residence time is very in shallow slot for material
It is short, allow material to be fully layered without the time of abundance, then this partial material cannot be sorted effectively, final to influence
Overall separating effect.
In actual production, substantial amounts of raw coal ceaselessly enters shallow-tank separator, does hindered falling motion in media as well.It is transported
Dynamic state is not only influenceed by autologous density and Media density, is also influenceed by factors such as raw meal particle size size, dielectric viscosities.
The size of material hindered falling speed in media as well is raw meal particle size and material and the function of Media density difference, granularity
It is bigger, density contrast is bigger, the layered velocity of material is fast；Granularity is smaller, density contrast is smaller, and the layered velocity of material is slower.In reality
Often some fine fraction coal has little time layering just discharge in separator in the production process of border, reduces the efficiency of separation.
Utility model content
For the market environment that reply is severe, the economic benefit in colliery is improved, coal classification desliming screen, shallow-tank separator are entered
Row transformation, reduces shallow-tank separator material size lower limit, increases raw coal preparation proportion, improves seed coal yield.
The utility model provides improved shallow-tank separator,
Shallow-tank separator bottom and side set cloth flowing plate 1 with holes, bottom corresponding to the cloth flowing plate perforate of bottom respectively
Cloth stream funnel 2 is set, internal suspension is fed in sorting groove body by the cloth flowing plate with holes of shallow slot bottom and side,
Suspension that the shallow slot bottom of shallow-tank separator is fed forms upper up-flow, and it is steady that the effect of upper up-flow is to maintain suspension
It is fixed, uniform, while play the role of scattered pan feeding；
The suspension fed from the shallow slot side of shallow-tank separator forms level stream, by the counterattack of level stream cloth hopper and
Limitation, makes level stream uniformly enter in shallow slot, and the effect of level stream is to maintain shallow slot cell body top density of suspending liquid stabilization, together
When form horizontal media stream from from feeding end to exhaust end, start shipment upper floating cleaned coal defeated effect.
Before raw coal enters shallow-tank separator, coal classification desliming screen is set, and coal classification desliming screen hole diameter of sieve (perforated) plate is
6mm, after entering to wash raw coal and being entered after graded desliming sieve classification desliming by feeding mouth in shallow slot, realize and divide in the presence of buoyancy
Layer, case of low density loads float over upper strata, and high density material sinks to shallow slot bottom, floats over the low-density thing on suspension top by level stream
Turn into head coal product from the discharge of discharge overfall 3, into qualified medium bucket.The high density thing at shallow slot bottom is sunk to by scraper plate 4 from cash
The discharge of stone discharge gate 5 turns into spoil product, completes assorting room.
The cloth flowing plate aperture of shallow slot bottom is 6mm.
Qualified medium bucket double-edged fine-toothed comb hole is 10mm.
Raw coal hour, selected amount was 700 tons.
The utility model compared with prior art, has the advantage that：
Dense-medium shallow-tank theoretical separation lower limit is breached, improves raw coal cleaning percent, adds clean coal yield, lifts coal preparation plant
Overall economic efficiency.
By the comparative analysis of indices before and after transformation, benefit that the raising of clean coal yield, caloric value is brought is much larger than
Be situated between consumption, the increased loss of medicine consumption.Therefore, this transformation has certain practical application.
Brief description of the drawings
Fig. 1 is shallow-tank separator top view；
Fig. 2 is shallow-tank separator front view.
In conjunction with drawings and examples, the utility model is described in further detail：
Including, 1 cloth flowing plate, 2 cloth stream funnels, 3 overfalls, 4 scraper plates, 5 spoil discharge gates.
Embodiment
The utility model provides improved shallow-tank separator, and shallow-tank separator bottom and side set cloth stream with holes respectively
Plate 1, bottom corresponding to the cloth flowing plate perforate of bottom set cloth stream funnel 2, the band that internal suspension passes through shallow slot bottom and side
The cloth flowing plate in hole is fed in sorting groove body,
Suspension that the shallow slot bottom of shallow-tank separator is fed forms upper up-flow, and it is steady that the effect of upper up-flow is to maintain suspension
It is fixed, uniform, while play the role of scattered pan feeding；
The suspension fed from the shallow slot side of shallow-tank separator forms level stream, by the counterattack of level stream cloth hopper and
Limitation, makes level stream uniformly enter in shallow slot, and the effect of level stream is to maintain shallow slot cell body top density of suspending liquid stabilization, together
When form horizontal media stream from from feeding end to exhaust end, start shipment upper floating cleaned coal defeated effect.
Before raw coal enters shallow-tank separator, coal classification desliming screen is set, and coal classification desliming screen hole diameter of sieve (perforated) plate is
6mm,
It is real in the presence of buoyancy after entering to wash raw coal and being entered after graded desliming sieve classification desliming by feeding mouth in shallow slot
Now it is layered, case of low density loads floats over upper strata, and high density material sinks to shallow slot bottom, floats over the low-density thing on suspension top by water
Advection turns into head coal product from the discharge of discharge overfall 3, into qualified medium bucket.The high density thing at shallow slot bottom is sunk to by scraper plate 4
Turn into spoil product from the discharge of spoil discharge gate 5, complete assorting room.
The cloth flowing plate aperture of shallow slot bottom is 6mm.
Qualified medium bucket double-edged fine-toothed comb hole is 10mm.
Raw coal hour, selected amount was 700 tons.
As shown in figure 1, suspension is fed in sorting groove body by shallow slot bottom and side Liang Ge positions in shallow-tank separator.
What bottom was fed is referred to as upper up-flow, is entered by cloth flowing plate with holes in groove, it is uniformly dispersed.The effect of upper up-flow is to maintain
Effect suspension stabilization, uniformly, while plays the role of scattered pan feeding.It is referred to as level stream from what side was fed.Pass through the counterattack of cloth hopper
And limitation, level stream overall with can be made, uniformly entered in sorting groove.It is liquid-tight that the effect of level stream is to maintain the suspension of cell body top
Degree is stable, while forms the horizontal media stream from feeding end to exhaust end, starts shipment upper floating cleaned coal defeated effect.
After entering to wash raw coal and being entered after graded desliming sieve classification desliming by feeding mouth in shallow slot, in the effect of controllable register
Under be totally immersed into suspension.Layering is realized in the presence of buoyancy, case of low density loads floats over upper strata, and high density material sinks to groove
Sub- bottom.Float over the low-density thing on suspension top turns into head coal product by level stream from the discharge of discharge overfall, sinks to bottom land
High density thing turn into spoil product by head chute discharge by scraper plate, completion assorting room.
In another embodiment, using two model BHS40100 it is rich after sieve raw coal is classified and taken off
Mud.Sieved after wherein winning and be used as classification close to three pieces of pan feeding side sieve plate, add water spray to be used as desliming on one piece of sieve plate of exit side.Adopt
Screening level segment sieve plate after winning is changed with 6mm sieve plates, the material size level of shallow slot is changed into 6-200mm.
In still another embodiment, desliming section water spray is transformed, water spray is prevented by sprinkling water groove gravity flow and under
Shower nozzle block the occurrence of and water spray is more uniformly effectively reduced the fine coal slurry amount into system.
In still another embodiment, strengthen heavy-media suspension quality and density domination, keep the stability of operation, connect
Continuous property.Keep closing Jie's bucket bucket position in normal level, it is impossible to too low, the too low stability for influenceing dense medium suspension liquid flowing, and density
It is not easy to keep stable；Shallow-tank separator upper up-flow, level stream are observed, reduces when upper up-flow is excessive causes magic flower and rises flow；
Shunt volume is adjusted, the coal slurry content in dense medium suspension liquid is maintained a reduced levels.
In still another embodiment, after the selected lower limit of shallow slot raw coal is adjusted to 6mm, in order to adapt to new technological requirement,
Other process points and production management have carried out appropriate adjustment：
(1) shallow slot bottom plate rising discharge orifice is changed to 6mm by 13mm；
(2) qualified medium bucket and dilute medium bucket double-edged fine-toothed comb hole are changed to 10mm by 20mm；
(3) raw coal hour selected amount is adjusted to 700 tons by 1300 tons；
(4) shallow slot underflow pipe is checked by January is once adjusted to weekly, reduces the possibility of shallow slot underflow blockage.
The analysis of experiments evaluation of separating effect after transformation
Shallow-tank separator pan feeding and product are sampled respectively before and after transformation, sieved, drift along, chemically examine ash content and hair
Heat etc. is tested, and show that product number quality table is as follows：
Product number quality table before table one is transformed
| Categories of coal | Yield (%) | Ash content (%) | Generate heat (kcal/kg) |
| Raw coal | 100 | 36.14 | 3665 |
| Bulk | 13.5 | 18.77 | 5317 |
| Mixed block | 16.1 | 19.96 | 5152 |
| Smalls | 50.8 | 32.12 | 4031 |
| Coal slime | 1.0 | 28.76 | 3315 |
| Spoil | 18.6 | 74.13 | 583 |
Product number quality table after table two (1) transformation
| Categories of coal | Yield (%) | Ash content (%) | Caloric value (kcal/kg) |
| Raw coal | 100 | 37.89 | 3643 |
| Big block cleaned coal (- 200mm) | 17.2 | 18.55 | 5321 |
| Small block cleaned coal (- 50mm) | 19.8 | 19.98 | 5121 |
| Smalls (- 13mm) | 41.9 | 31.89 | 4154 |
| Coal slime | 1.3 | 28.39 | 3278 |
| Spoil | 20.1 | 73.96 | 555 |
Product drifts along table after table two (2) transformation
By to table one, the data analysis of table two, coal preparation plant by shallow-tank separator, it is rich after sieve and transforms, drop
Low shallow-tank separator lower limit of separation, good effect is reached improving clean coal yield, caloric value etc..
Above-mentioned detailed description is illustrating for one of the utility model possible embodiments, and the embodiment is not
To limit the scope of the claims of the present utility model, all equivalence enforcements or change without departing from carried out by the utility model, all should include
In the range of technical solutions of the utility model.
Claims (1)
1. a kind of improved shallow-tank separator, it is characterised in that shallow-tank separator bottom and side set cloth stream with holes respectively
Plate（1）, the cloth flowing plate of bottom（1）Bottom corresponding to upper position of opening sets cloth stream funnel（2）, at the charging aperture of shallow-tank separator
Coal classification desliming screen is set, and coal classification desliming screen hole diameter of sieve (perforated) plate is 6mm；
Overfall is provided with the top of shallow slot（3）, overfall（3）It is circumscribed with qualified medium bucket；
Shallow slot bottom is provided with scraper plate（4）With spoil discharge gate（5）, scraper plate（4）For by the high density thing for sinking to shallow slot bottom scrape to
Spoil discharge gate（5）Discharge turns into spoil product；
The cloth flowing plate aperture of shallow slot bottom is 6mm；
Qualified medium bucket double-edged fine-toothed comb hole is 10mm.
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| CN201720247351.1U CN207013125U (en) | 2017-03-14 | 2017-03-14 | A kind of improved shallow-tank separator |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108435406A (en) * | 2018-04-04 | 2018-08-24 | 中国矿业大学 | A kind of separation of coarse slime device with stabilization fluid environment |
| CN108906309A (en) * | 2018-09-04 | 2018-11-30 | 天津美腾科技有限公司 | Dense-medium shallow-tank separation system |
| CN109499740A (en) * | 2018-12-24 | 2019-03-22 | 无锡市张泾压力容器制造有限公司 | Low abrasion lump ore gravity separation sorting machine |
| CN109692756A (en) * | 2019-01-25 | 2019-04-30 | 华北科技学院 | A kind of energy-efficient shallow slot screening installation |
| CN109731670A (en) * | 2019-03-15 | 2019-05-10 | 中国矿业大学 | A kind of jerk type dense-medium shallow-tank sorting unit and method |
| CN112676028A (en) * | 2020-11-12 | 2021-04-20 | 中冶长天国际工程有限责任公司 | Mineral separation process for separating manganese ore lump ore by using dense medium shallow grooves |
| CN112774851A (en) * | 2020-12-23 | 2021-05-11 | 中煤科工集团唐山研究院有限公司 | Shallow slot separator experiment table and experiment method |
| CN112844797A (en) * | 2021-02-18 | 2021-05-28 | 中国矿业大学(北京) | Dense medium separator and separation system |
| WO2022188177A1 (en) * | 2021-03-12 | 2022-09-15 | 方甡 | Sorting apparatus and combustion furnace provided with same |
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2017
- 2017-03-14 CN CN201720247351.1U patent/CN207013125U/en active Active
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108435406A (en) * | 2018-04-04 | 2018-08-24 | 中国矿业大学 | A kind of separation of coarse slime device with stabilization fluid environment |
| CN108435406B (en) * | 2018-04-04 | 2024-03-15 | 中国矿业大学 | Coarse slime sorting unit with stable fluidization environment |
| CN108906309A (en) * | 2018-09-04 | 2018-11-30 | 天津美腾科技有限公司 | Dense-medium shallow-tank separation system |
| CN109499740A (en) * | 2018-12-24 | 2019-03-22 | 无锡市张泾压力容器制造有限公司 | Low abrasion lump ore gravity separation sorting machine |
| CN109692756A (en) * | 2019-01-25 | 2019-04-30 | 华北科技学院 | A kind of energy-efficient shallow slot screening installation |
| CN109731670A (en) * | 2019-03-15 | 2019-05-10 | 中国矿业大学 | A kind of jerk type dense-medium shallow-tank sorting unit and method |
| WO2020186591A1 (en) * | 2019-03-15 | 2020-09-24 | 中国矿业大学 | Pulsating-type heavy medium shallow slot separating device and method |
| CN112676028A (en) * | 2020-11-12 | 2021-04-20 | 中冶长天国际工程有限责任公司 | Mineral separation process for separating manganese ore lump ore by using dense medium shallow grooves |
| CN112676028B (en) * | 2020-11-12 | 2022-12-02 | 中冶长天国际工程有限责任公司 | Mineral separation process for separating manganese ore lump ore by using dense medium shallow grooves |
| CN112774851A (en) * | 2020-12-23 | 2021-05-11 | 中煤科工集团唐山研究院有限公司 | Shallow slot separator experiment table and experiment method |
| CN112844797A (en) * | 2021-02-18 | 2021-05-28 | 中国矿业大学(北京) | Dense medium separator and separation system |
| WO2022188177A1 (en) * | 2021-03-12 | 2022-09-15 | 方甡 | Sorting apparatus and combustion furnace provided with same |
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