CN106362857A - Manual floatation technology for coal slime upgrading and desulfurizing - Google Patents
Manual floatation technology for coal slime upgrading and desulfurizing Download PDFInfo
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- CN106362857A CN106362857A CN201610717314.2A CN201610717314A CN106362857A CN 106362857 A CN106362857 A CN 106362857A CN 201610717314 A CN201610717314 A CN 201610717314A CN 106362857 A CN106362857 A CN 106362857A
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- 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
- B03B—SEPARATING SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS
- B03B7/00—Combinations of wet processes or apparatus with other processes or apparatus, e.g. for dressing ores or garbage
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- 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
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Abstract
The invention discloses a manual floatation technology for coal slime upgrading and desulfurizing. The manual floatation technology comprises the following steps that raw coal is washed by a coal washer, coal slime flows along a building with a slope into a first high frequency vibrating screen to be dehydrated, after screening, coal sand is conveyed into a manual floatation tank, minus sieve water enters a water reduction screen, blocked matter enters a minus sieve groove and flows into a second high frequency vibrating screen, the minus sieve water flows into a settling tank, and coal slime cakes are obtained through extrusion with a coal slime extruding system; and the coal sand in the manual floatation tank is upgraded and desulfurized, and is washed by a left-and-right-swinging hydraulic giant from top to bottom by means of the slope of the manual floatation tank, floating fine coal enters a groove below and is pumped to the second high frequency vibrating screen by a pump to be dehydrated, the dehydrated fine coal is conveyed to a fine coal bin, and dry coal powder is removed by a forklift. According to the manual floatation technology for coal slime upgrading and desulfurizing, upgrading, desulfurizing and emission reduction are conducted on tailings and the coal slime through manual floatation, the steps are easy to operate, no chemical agent is needed, environmental protection is achieved, and the cost is saved.
Description
Technical field
The present invention relates to coal slime technical field of desulfurization, the technique of more particularly, to a kind of artificial coal slurry flotation upgrading desulfurization.
Background technology
At present, the effective granule lower limit of most advanced abroad dense-medium separation with the U.S. as representative is 1-0.5mm, and China Beijing
China Tech skill tree has reached 0.125mm-0.100mm next to that floatation process.Process above reclaims the harmful substance after extracting desulfurization all
Enter mine tailing, according to the difference of coal, the mine tailing calorific value after flotation, about between 1200-3800 kilocalorie.Some enterprises
Sieve coal in entering into recovery with tailing dry row and all do not carry out desulfurization.But it is directly used in distribution coal, and coal slime power plant, brick field lamp fires
Material uses.Substantial amounts of sulfur dioxide can not produced in combustion, dote on and cause atmospheric pollution (haze) to give people class and cause pole
Big harm.Some areas coal resource enriches, and for raw coal mud because upgrading investment is big, production cost is high, is therefore taken as rubbish
Rubbish is processed, and causes the great wasting of resources, in Beijing-tianjin-hebei Region close to the coal-producing area, most of coal all enters to wash, coking.Its mine tailing root
According to the high low-sulfur of coal, not etc. mine tailing per ton (80mm-350mm) does not contain 30-150kg and contains flavous iron sulfide breeze heat height
(burning generation sulfur dioxide is exactly for he, is that existing equipment cannot extract).Power shovel desulphurization during combustion expense: enter 600,000 kilowatts of machines
Group: using the coal of sulfur content 1%, U.S. degree electricity desulfurization equipment operating cost 1.5-2 is divided；Using the coal of sulfur content 2%, often spend electric desulfurization
More than 2.5 points of cost.During sulfur content 1%, desulfurized effect such as reached for 95% 3.1 ten thousand tons of its removal sulfur dioxide year and often takes off 10,000 tons of dioxies
Change sulfur expense in hundred million yuan of 1-1.2；Look into the coal slime of baking bricks of more than 4-5 Handan " coal slime " receipts 2800 kilocalories in 2014 on the net,
Sulfur is high, and it doesn't matter, 10,000 tons of January；You understand that 10,000 tons of person can be containing pyrites stone powder more than 1 kiloton？Power plant sets
The import of standby major part.And brick field？This is as drying plant: improves heat, is readily transported, and cannot desulfurization.In recent years, country carried
High raw coal must enter the restriction washed it is stipulated that first desulfurization has solved power plant desulfurization hardly possible, the common difficult problem of desulphurization cost before burning.Also
Although there being our Fructus Jujubae ore deposit Aug. 1st water-coal-slurry combustion environmental-friendlies, the waste material after three upgradings appoints the iron sulfide breeze of the cleaned coal 10% containing 18% to use
Make brick field internal combustion, you can say his environmental protection！We live in a sky.But raw coal washing upgrading desulfurization, coal slime, mine tailing are continued
If afterflame burns to use fundamentally thoroughly does not solve coal slime, the upgrading desulphurization problem of mine tailing: atmospheric pollution used in burning
Appoint and cannot solve.The present invention is directed to deficiency, provides the upgrading desulfurization synergistic technique of a kind of artificial coal slurry flotation and mine tailing, can improve
Smart coal yield, reduces coal slime and mine tailing pollution on the environment containing combustion of sulfur.
Content of the invention
It is an object of the invention to provide a kind of technique of artificial coal slurry flotation upgrading desulfurization, asked with solving above-mentioned technology
Topic.
The present invention employs the following technical solutions for achieving the above object:
A kind of technique of artificial coal slurry flotation upgrading desulfurization, comprises the steps: 1), by raw coal through coal washing machine-wash, coal slirne with
The acclive building of tool flows into the first high frequency shale shaker dehydration, after screening, coal sand is sent to artificial floation tank, backwater enters
Enter diminishing sieve, the material of interception enters sieve lower groove, and flows into the second high frequency shale shaker, and backwater flows into sedimentation tank, using coal
Mud extrusion system, is squeezed into coal slime cake；
2), the coal sand in artificial floation tank is carried out upgrading desulfurization, using the gradient floating artificial floation tank, use hydraulic giant from bottom to top
Swing flushing, and the cleaned coal after emersion enters lower slots, delivers to the second high frequency shale shaker with pumping and is dehydrated, will be dehydrated
Cleaned coal afterwards is sent to cleaned coal storehouse, and coal dry powder forklift empties.
Preferably, described first high frequency shale shaker is 80 mesh, power 4.5-6kw；Described diminishing sieves as 400 mesh, and described
Two high frequency shale shakers are 400 mesh, power 15kw；Coal sand is put into different artificial floation tanks respectively by 80 mesh and 80-400 mesh,
Then pumped respectively to 80 mesh and 80-400 purpose second high frequency shale shaker, the quantity of wherein said second high frequency shale shaker with pump
For 10, every three of described artificial floation tank is one group, and based on the wherein the one the second ponds, scavenger is often little according to the percentage of coal content of raw material
When can float 10-16 ton upgrading cleaned coal.
Preferably, after flotation washer flotation, mine tailing enters 80 purpose the first diminishing sieves, the tail below 80 mesh with current to raw coal
The gradient by pipeline for the ore deposit, with flow direction 250-350 purpose the second diminishing sieve, mine tailings more than 80 mesh is with screen cloth slope current
To the groove of the second diminishing sieve lower section, the mine tailing in groove is added water, make mine tailing in tank flow into three groups the with current
One spiral chute is sorted, and every group of first spiral chute is provided with three mouths, will flow out not jljl in three group of first spiral chute
The mouth of matter carries out parallel connection respectively by pipeline, flows out cleaned coal, middle coal and coal dry powder respectively, cleaned coal flows into essence after making three mouth parallel connections
Coal pond, and pumped by pipeline using pump and sort again to the second spiral chute, middle coal flow in coal pond, deliver to first with pumping
The groove circulatory sorting of diminishing sieve lower section, coal dry powder flows into sedimentation tank, and sedimentation tank is two, closes wherein oneself full sedimentation tank,
Swung from bottom to top cleaning with hydraulic giant, cleaned coal, tailing water, with coal pond in current and gradient flow direction, are delivered to first with pumping and subtracted
Groove below water sieve is circulated sorting, and sedimentation tank coal dry powder forklift empties: the second spiral chute is two groups, ratio the
One spiral chute is high 2 meters, reserves three mouths simultaneously, and the mouth of different outflow materials is simultaneously in parallel, and cleaned coal flows to 80 purposes first
High frequency shale shaker, middle coal repeats to sort below coal dry powder pipeline and the first spiral chute with coal pond in the pipeline flow-direction of slope
Coal dry powder placed in series, flowing to sedimentation tank, to carry out precipitation circulation point remote: cleaned coal after the first high frequency shale shaker with 80 mesh below
Backwater is common to enter the second diminishing sieve, enables the screen cloth 1-3 road of 250 1 350 mesh, carries out diminishing, by mine tailing and 250-350 mesh
Cleaned coal is intercepted, and the material of interception enters sieve lower groove, flows to the second high frequency shale shaker dehydration, deviates from 250 1 350 mesh coals
Sand, sends into husky for coal the artificial floation tanks that three is a group and carries out upgrading desulfurization with forklift, using the gradient of floation tank, from upper
Lower hydraulic giant swings flushing, and the cleaned coal after emersion enters lower slots, delivers to 250 1 350 purpose the 3rd high frequency with pumping
Vibrosieve, is dehydrated, and the cleaned coal after dehydration is sent to cleaned coal storehouse, and coal dry powder forklift empties.
The invention has the beneficial effects as follows: the present invention adopts the technique that artificial floating washing mine tailing, coal slime upgrading desulfurization reduce discharging, step
Simple to operation, it environmental protection, has saved cost without any chemical drugss.
Brief description
Fig. 1 is artificial floation tank structural representation in the present invention.
Specific embodiment
Below the embodiment it is clear that described is clearly and completely described to the technical scheme in the embodiment of the present invention
It is only a part of embodiment of the present invention, rather than whole embodiments.Based on the embodiment in the present invention, the common skill in this area
The every other embodiment that art personnel are obtained under the premise of not making creative work, broadly falls into the model of present invention protection
Enclose.
A kind of technique of artificial coal slurry flotation upgrading desulfurization, comprises the steps: 1), by raw coal through coal washing machine-wash, coal slime
Slurry flows into the first high frequency shale shaker dehydration with having acclive building, after screening, coal sand is sent to artificial floation tank, under sieve
Water enters diminishing sieve, and the material of interception enters sieve lower groove, and flows into the second high frequency shale shaker, and backwater flows into sedimentation tank, profit
Use coal slime extrusion system, be squeezed into coal slime cake；
2), the coal sand in artificial floation tank is carried out upgrading desulfurization, using the gradient floating artificial floation tank, use hydraulic giant from bottom to top
Swing flushing, and the cleaned coal after emersion enters lower slots, delivers to the second high frequency shale shaker with pumping and is dehydrated, will be dehydrated
Cleaned coal afterwards is sent to cleaned coal storehouse, and coal dry powder forklift empties.
Described first high frequency shale shaker is 80 mesh, power 4.5-6kw；Described diminishing sieves as 400 mesh, described second high frequency vibrating
Dynamic sieve is 400 mesh, power 15kw；Coal sand is put into different artificial floation tanks respectively by 80 mesh and 80-400 mesh, then uses pump
Pump respectively to 80 mesh and 80-400 purpose second high frequency shale shaker, the quantity of wherein said second high frequency shale shaker is 10,
Every three of described artificial floation tank is one group, and based on the wherein the one the second ponds, scavenger can float per hour according to the percentage of coal content of raw material
10-16 ton upgrading cleaned coal.
In conjunction with Fig. 1, in figure: 1, put at raw material, 2, at hydraulic giant opening, 3, flashboard, 4, discharge water place, 5, forklift pass by one's way plate, 6,
Groove, 7, pond, 8, pump.After flotation washer flotation, mine tailing enters 80 purpose the first diminishing sieves with current to raw coal, below 80 mesh
The gradient by pipeline for the mine tailing, with flow direction 250-350 purpose the second diminishing sieve, mine tailings more than 80 mesh is with the screen cloth gradient
Flow to the groove of the second diminishing sieve lower section, the mine tailing in groove is added water, make the mine tailing in tank flow into three groups with current
First spiral chute is sorted, and every group of first spiral chute is provided with three mouths, different by flowing out in three group of first spiral chute
The mouth of material carries out parallel connection respectively by pipeline, flows out cleaned coal, middle coal and coal dry powder respectively, cleaned coal flows into after making three mouth parallel connections
Cleaned coal pond, and pumped by pipeline using pump and sort again to the second spiral chute, middle coal flow in coal pond, deliver to the with pumping
The groove circulatory sorting of one diminishing sieve lower section, coal dry powder flows into sedimentation tank, and sedimentation tank is two, closes wherein oneself full precipitation
Pond, is swung cleaning from bottom to top with hydraulic giant, and cleaned coal, tailing water with coal pond in current and gradient flow direction, deliver to the with pumping
The groove of one diminishing sieve lower section is circulated sorting, and sedimentation tank coal dry powder forklift empties: the second spiral chute is two groups,
Higher than the first spiral chute 2 meters, reserve three mouths, the mouth of different outflow materials is simultaneously in parallel, and cleaned coal flows to 80 purposes simultaneously
First high frequency shale shaker, middle coal repeats to sort below coal dry powder pipeline and the first spiral chute with coal pond in the pipeline flow-direction of slope
Coal dry powder placed in series, flowing to sedimentation tank, to carry out precipitation circulation point remote: cleaned coal after the first high frequency shale shaker with 80 mesh with
Lower backwater is common to enter the second diminishing sieve, enables the screen cloth 1-3 road of 250 1 350 mesh, carries out diminishing, by mine tailing and 250-350
Mesh cleaned coal is intercepted, and the material of interception enters sieve lower groove, flows to the second high frequency shale shaker dehydration, deviates from 250 1 350 mesh coals
Sand, sends into husky for coal the artificial floation tanks that three is a group and carries out upgrading desulfurization with forklift, using the gradient of floation tank, from upper
Lower hydraulic giant swings flushing, and the cleaned coal after emersion enters lower slots, delivers to 250 1 350 purpose the 3rd high frequency with pumping
Vibrosieve, is dehydrated, and the cleaned coal after dehydration is sent to cleaned coal storehouse, and coal dry powder forklift empties.
Although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, permissible
Understand and can carry out multiple changes, modification, replacement to these embodiments without departing from the principles and spirit of the present invention
And modification, the scope of the present invention be defined by the appended.
Claims (3)
1. a kind of technique of artificial coal slurry flotation upgrading desulfurization is it is characterised in that comprise the steps: 1), by raw coal through coal washing
Machine washing, coal slirne flows into the first high frequency shale shaker dehydration with having acclive building, is sent to coal sand and manually floats after screening
Scavenger, backwater enters diminishing sieve, and the material of interception enters sieve lower groove, and flows into the second high frequency shale shaker, and backwater flows into
Sedimentation tank, using coal slime extrusion system, is squeezed into coal slime cake；
2), the coal sand in artificial floation tank is carried out upgrading desulfurization, using the gradient floating artificial floation tank, use hydraulic giant from bottom to top
Swing flushing, and the cleaned coal after emersion enters lower slots, delivers to the second high frequency shale shaker with pumping and is dehydrated, will be dehydrated
Cleaned coal afterwards is sent to cleaned coal storehouse, and coal dry powder forklift empties.
2. artificial coal slurry flotation upgrading sulfur removal technology according to claim 1 is it is characterised in that described first dither
Sieve as 80 mesh, power 4.5-6kw；Described diminishing sieves as 400 mesh, and described second high frequency shale shaker is 400 mesh, power 15kw；Will
Coal sand puts into different artificial floation tanks respectively by 80 mesh and 80-400 mesh, is then pumped respectively to 80 mesh and 80-400 mesh with pump
The second high frequency shale shaker, the quantity of wherein said second high frequency shale shaker is 10, and every three of described artificial floation tank is one
Group, scavenger can float 10-16 ton upgrading cleaned coal per hour according to the percentage of coal content of raw material based on the wherein the one the second ponds.
3. artificial coal slurry flotation upgrading sulfur removal technology according to claim 1 and 2 is it is characterised in that raw coal is through flotation washer
After flotation, mine tailing enters 80 purpose the first diminishing sieves with current, and the gradient by pipeline for the mine tailing below 80 mesh, with flow direction
250-350 purpose second diminishing sieves, and mine tailings more than 80 mesh flows to the groove of the second diminishing sieve lower section with the screen cloth gradient, to ditch
Mine tailing in groove is added water, and makes the mine tailing in tank flow into three group of first spiral chute with current and is sorted, every group first
Spiral chute is provided with three mouths, and the mouth flowing out different material in three group of first spiral chute is carried out parallel connection respectively by pipeline,
Flow out cleaned coal, middle coal and coal dry powder respectively after making the parallel connection of three mouths, cleaned coal flows into cleaned coal pond, and using pump by pipeline pump to
Second spiral chute sorts again, coal pond in middle coal inflow, delivers to the groove circulatory sorting of the first diminishing sieve lower section, coal with pumping
Dry powder flows into sedimentation tank, and sedimentation tank is two, closes wherein oneself full sedimentation tank, is swung from bottom to top cleaning with hydraulic giant,
Cleaned coal, tailing water, with coal pond in current and gradient flow direction, are circulated sorting with the groove that pumping delivers to the first diminishing sieve lower section,
Sedimentation tank coal dry powder forklift empties: the second spiral chute is two groups, higher than the first spiral chute 2 meters, reserves three simultaneously
Individual mouth, the mouth of different outflow materials is simultaneously in parallel, and cleaned coal flows to 80 purpose the first high frequency shale shakers, and middle coal is with slope pipeline
In flow direction, coal pond repeats to sort the coal dry powder placed in series below coal dry powder pipeline and the first spiral chute, flows to sedimentation tank and enters
Row precipitation circulation point is remote: cleaned coal following backwater with 80 mesh after the first high frequency shale shaker is common to enter the second diminishing sieve, opens
With the screen cloth 1-3 road of 250 1 350 mesh, carry out diminishing, mine tailing and 250-350 mesh cleaned coal are intercepted, the material of interception enters
Sieve lower groove, flows to the second high frequency shale shaker dehydration, and abjection 250 1 350 mesh coal is husky, coal sand forklift is sent into three and is one group
Artificial floation tank carry out upgrading desulfurization, using the gradient of floation tank, swung flushing with hydraulic giant from top to bottom, after emersion
Cleaned coal enter lower slots, deliver to 250 1 350 purpose the 3rd high frequency shale shaker with pumping, be dehydrated, and will dehydration after
Cleaned coal is sent to cleaned coal storehouse, and coal dry powder forklift empties.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610717314.2A CN106362857B (en) | 2016-08-27 | 2016-08-27 | A kind of technique of artificial coal slurry flotation upgrading desulfurization |
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| CN201610717314.2A CN106362857B (en) | 2016-08-27 | 2016-08-27 | A kind of technique of artificial coal slurry flotation upgrading desulfurization |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108554615A (en) * | 2018-03-02 | 2018-09-21 | 广西上林县日升机械制造有限公司 | Chute in automatic |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| DE3620805A1 (en) * | 1986-06-20 | 1987-12-23 | Gesteins & Tiefbau Gmbh | The retreat working of development roads |
| CN2503990Y (en) * | 2001-10-15 | 2002-08-07 | 河南神火煤电股份有限公司 | Coal cleaning and impurity removing system |
| CN1225418C (en) * | 2002-11-13 | 2005-11-02 | 新汶矿业集团有限责任公司华丰煤矿 | Method and apparatus for reclaiming washed coal from slime water in coal washery |
| CN1817472A (en) * | 2006-03-28 | 2006-08-16 | 永城煤电(集团)有限责任公司 | Coal-washing process for realizing total washing, mixed washing and classifying washing |
| CN101518754A (en) * | 2008-06-06 | 2009-09-02 | 倪志群 | Method for washing and screening anthracitic coals |
| CN101564704A (en) * | 2009-05-31 | 2009-10-28 | 张延杰 | Device and method for washing tailings by water |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108554615A (en) * | 2018-03-02 | 2018-09-21 | 广西上林县日升机械制造有限公司 | Chute in automatic |
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