CN103977913B - Flotation column and the method for floating of lean iron mine - Google Patents
Flotation column and the method for floating of lean iron mine Download PDFInfo
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- CN103977913B CN103977913B CN201410211777.2A CN201410211777A CN103977913B CN 103977913 B CN103977913 B CN 103977913B CN 201410211777 A CN201410211777 A CN 201410211777A CN 103977913 B CN103977913 B CN 103977913B
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Abstract
The present invention relates to chemical technology field, specifically disclose a kind of flotation column first, next discloses the method using the lean iron mine of above-mentioned column flotation, comprises the following steps：1) liquid medicine and compressed air are injected into flotation column by booster pump, the foaming agent that described liquid medicine includes the collecting agent of 0.8 1.2g/L, the inhibitor of 0.4 0.6g/L and concentration is 2.0 3.0g/L, the flow of described booster pump is 500 800L/h；2) when the liquid level in flotation column reaches at the mouth of pipe of overflow drainage conduit, open mine tailing discharge pipe and the valve in concentrate exit, power on by electromagnetic coil assembly, squeeze into ore pulp through ore pulp feed pipe into flotation column simultaneously, the material discharged from concentrate outlet afterwards is target product, in described ore pulp, the mass percent of lean iron mine is 20% 50%, makes the flotation rate of smart iron mine in lean iron mine high using method disclosed by the invention.
Description
Technical field
The present invention relates to chemical technology field, it is specifically related to a kind of flotation column and the method for floating of lean iron mine.
Background technology
Smart iron mine is one of product of separation operation in ore dressing, and it passes through, and flotation is rough to be can get, for Iron Ore Flotation
Flotation device have multiple, and flotation column is a kind of relatively conventional precipitation formula floatation equipment, and the flotation mode of flotation column is just divided into
Flotation and reverse flotation, so-called direct flotation namely floatingly selects target product concentrate, logical specifically in the middle part of the cylinder of flotation column
Cross increase pump and the liquid medicine in bubble generator and compressed air are squeezed in flotation column, then add from the top of cylinder thick
The ore pulp that iron mine and water mix carries out mix and blend, the concentrate ore particle in such ore pulp be selectively attached to bubble it
On, finally discharge floating to the outlet from cylinder top, and mine tailing (i.e. gangue mineral or impure mineral) is then retained in ore pulp
Finally discharge from the bottom of cylinder.Above-mentioned prior art has a drawback in that：With the fast development of steel industry, lean iron mine
The exploitation of resource are increasingly paid close attention to by people, but the flotation column of the flotation essence iron mine occurring on market in recent years is many
It is to adopt direct flotation, and direct flotation is only applicable to the high Ore of Ore iron-holder, for the relatively low lean iron mine of iron-holder and tail
For ore deposit, multiple flotation is not only needed using direct flotation, and the yield of concentrate is very low, flotation effect is poor.
Content of the invention
The primary and foremost purpose of the present invention is to provide a kind of floating of flotation rate of the smart iron mine effectively improving in lean iron mine and mine tailing
Select post.
For achieving the above object, the technical solution used in the present invention is：A kind of flotation column it is characterised in that：Including irony
Cylinder, the middle epimere of cylinder is disposed with the ore pulp feed pipe being communicated with barrel chamber, mine tailing discharge pipe from top to bottom, is connected gas
The medicament feed pipe of the outfan of bubble generator, the lower end of cylinder exports for concentrate, sheathed on the periphery wall of middle hypomere of cylinder
There is the electromagnetic coil assembly connecting power supply.
Using having the beneficial effects that technique scheme produces：When carrying out the flotation of lean iron mine, by above-mentioned flotation
Post can carry out the reverse flotation of lean iron mine, that is, the mine tailing of emersion is discharged from the middle epimere of cylinder, the smart iron mine finally retaining
Discharge from the lower end of cylinder, the present invention sheathed electromagnetic coil assembly, electromagnetic coil assembly on the periphery wall of the middle hypomere of cylinder
Stronger magnetic field intensity can be produced after energising, so can promote the smart iron mine in ore pulp under magneticaction to below cylinder
Mobile, finally depart from magnetic force and export discharge from concentrate under gravity.Present configuration is simple, in lean iron mine
The flotation rate of smart iron mine is high.
Another object of the present invention is a kind of method using the lean iron mine of above-mentioned column flotation,
It comprises the following steps：
S1) liquid medicine and compressed air are injected into flotation column by booster pump, described medicament is molten
Liquid includes the collecting agent of 0.8-1.2g/L, the inhibitor of 0.4-0.6g/L and concentration
The foaming agent of 2.0-3.0g/L, the flow of described booster pump is 500-800L/h；
S2) when the liquid level in flotation column reaches at the mouth of pipe of overflow drainage conduit, mine tailing discharge pipe and essence are opened
The valve in ore deposit exit, the power on of electromagnetic coil assembly squeezes into ore pulp through ore pulp feed pipe into flotation column simultaneously, it
The material discharged from concentrate outlet afterwards is target product, and in described ore pulp, the mass percent of lean iron mine is 20%-50%, when
So, the mine tailing containing a small amount of iron compound can also be included in described ore pulp, so can improve the response rate of smart iron mine.
Specifically scheme is：Collecting agent in described step S1 is one or more of lauryl amine, ether amines and fatty amine,
Inhibitor is starch and/or carboxymethyl cellulose, and foaming agent is terpenic oil and/or glycol polypropylene, during actual flotation, is first
Lean iron mine is crushed, squeezes into again after being then sufficiently mixed with water in flotation column it is preferred that the particle diameter of described lean iron mine is less than 200 μ
M, the smart iron mine in so lean iron mine is fully reclaimed, and collection rate is high, additionally, it is preferred that the electrical current of electromagnetic coil assembly is
0.2-0.7A, the number of turns that this amperage requirement directly passes through to adjust electromagnetic coil assembly can achieve.
Brief description
Fig. 1 is the schematic perspective view of the present invention；
Fig. 2 is the structural representation of the present invention；
Fig. 3 is the A-A of Fig. 1 to sectional view.
Specific embodiment
A kind of flotation column, as Figure 1-3, it includes the cylinder 10 of irony, and the middle epimere of described cylinder 10 is from top to bottom
Be disposed with the ore pulp feed pipe 11 communicating with barrel chamber, mine tailing discharge pipe 13, be connected bubble generator outfan medicament
Feed pipe 14, the lower end of cylinder exports 15 for concentrate, and the periphery wall of middle hypomere of cylinder 10 is arranged with the electromagnetism connecting power supply
Coil block 20.The reverse flotation of lean iron mine when carrying out the flotation of lean iron mine, can be carried out by flotation column disclosed by the invention,
That is making floating object by floating agent is mine tailing, and the mine tailing so floatingly selecting simultaneously is arranged from the middle epimere of cylinder 10
Go out, from concentrate outlet 15 discharge of cylinder 10 lower end, compared with prior art, the present invention is in cylinder for the smart iron mine finally retaining
The sheathed electromagnetic coil assembly 20 connecting power supply on 10 periphery wall of middle hypomere, energy after described electromagnetic coil assembly 20 energising
The stronger magnetic field intensity of enough generations, so can promote the smart iron mine in ore pulp to move to below cylinder 10 under magneticaction,
Finally smart iron mine departs from magnetic force and under gravity from concentrate outlet 15 discharge, using Flotation of Lean Iron Ore of the present invention
The response rate high, be effectively increased the supply to steel industry for the smart iron mine.
As further preferred version：As shown in Figure 1-2, described cylinder 10 includes direct tube section 16 and the cone of same core arrangement
Cylinder section 17, the heavy caliber end of conical cylinder section 17 is coincide with the lower end of direct tube section 16 and is connected, and the small-caliber end of conical cylinder section 17 is located at cylinder
10 lower end, described electromagnetic coil assembly 20 coincide and is set on the outer peripheral face of conical cylinder section 17.The present invention is by under in cylinder 10
Section is arranged to cone cylinder shape, and so smart iron mine can be collided with the inwall of conical cylinder section 17 under magneticaction and move gradually downward
Move until from concentrate outlet 15 discharge, effectively improving the purity of smart floatation of iron ore.
Further, described medicament feed pipe 14 is located at the direct tube section 16 of cylinder 10 and the side wall of the junction of conical cylinder section 17
On, and medicament feed pipe 14 along cylinder 10 side wall tangential direction arrangement, in conjunction with shown in Fig. 1 and 3, tangentially to cylinder 10
Inside inject medicament and compressed air, such medicament mixed liquor can form scattered bubble in cylinder 10 inward eddy, greatly carries
The flotation effect of high lean iron mine.
The present invention when actually used, due to medicament mixed liquor produce eddy flow in cylinder 10 so that mine tailing float
During gradually draw close at the shaft core of cylinder 10, mine tailing is discharged for convenience, as shown in Fig. 2 described mine tailing discharge pipe 13
It is the bend pipe being made up of the vertical tube positioned at bottom and this two parts of superposed transverse tube, vertical tube and cylinder 10 are arranged with core and perpendicular
The mouth of pipe of pipe downwards, so can ensure that the mine tailing at cylinder 10 shaft core is able to discharge in active set.
Further, described cylinder 10 is provided with the overflow drainage conduit 12 communicating with barrel chamber, overflow drainage conduit 12 and ore deposit
The slurry contour and positioned opposite upper end side-walls in cylinder 10 of feed pipe 11, by the arrangement of overflow drainage conduit 12, such cylinder
The material that bubble in 10 floats when excessive can be discharged through overflow drainage conduit 12, and the material floating when bubble is excessive was mainly
The ore pulp of amount, medicament and a small amount of mine tailing do not discharged from mine tailing discharge pipe 13 are it is preferred that described overflow drainage conduit 12 is passed through even
Adapter is connected with ore pulp feed pipe 11, and connecting tube is provided with check valve, and the unlatching conducting direction of described check valve is certainly to overflow
Stream drainage conduit 12 points to the direction of ore pulp feed pipe 11, is made from overflow drainage conduit 12 row by the arrangement of connecting tube and check valve
The material going out is reclaimed flotation again, thus improving the response rate of smart iron mine.
With regard to the method for the above-mentioned lean iron mine of column flotation, illustrated using 2 embodiments below：
Embodiment 1：
1) the lean iron mine that iron oxide content is 9.8% is crushed to particle diameter and is 200 μm, then add water and be mixed to get ore pulp,
In ore pulp, the mass percent of lean iron mine is 30%；
2) liquid medicine and compressed air are injected into flotation column by booster pump, described liquid medicine includes 1.0g/L
Lauryl amine, the starch of 0.5g/L and concentration be the terpenic oil of 2.5g/L, the flow of described booster pump is 600L/h；
3) whne in flotation column liquid level reach overflow drainage conduit 12 the mouth of pipe at when, open mine tailing discharge pipe 13 and
Valve at concentrate outlet 15, the power on of the electromagnetic coil assembly 20 for 0.5A for the electrical current feeds through ore pulp simultaneously
Ore pulp squeezed into into flotation column by pipe 11, collects the smart iron mine from concentrate outlet 15 discharge, analyzes after testing, the yield of smart iron mine reaches
55%, compared with the method for floating conventional with prior art, improve 10% using the flotation yield that this embodiment makes smart iron mine.
Embodiment 2：
1) the lean iron mine that iron oxide content is 9.8% is crushed to particle diameter and is 150 μm, then add water and be mixed to get ore pulp,
In ore pulp, the mass percent of lean iron mine is 40%；
2) liquid medicine and compressed air are injected into flotation column by booster pump, described liquid medicine includes 1.2g/L
Ether amines, the starch of 0.5g/L and concentration be the glycol polypropylene of 2.5g/L, the flow of described booster pump is 800L/h；
3) whne in flotation column liquid level reach overflow drainage conduit 12 the mouth of pipe at when, open mine tailing discharge pipe 13 and
Valve at concentrate outlet 15, the power on of the electromagnetic coil assembly 20 for 0.7A for the electrical current feeds through ore pulp simultaneously
Ore pulp squeezed into into flotation column by pipe 11, collects the smart iron mine from concentrate outlet 15 discharge, analyzes after testing, the yield of smart iron mine reaches
60%, compared with the method for floating conventional with prior art, improve 15% using the flotation yield that this embodiment makes smart iron mine.
Claims (8)
1. a kind of flotation column it is characterised in that：Cylinder (10) including irony, the middle epimere of described cylinder (10) from top to bottom according to
Secondary be provided with the ore pulp feed pipe (11) communicating with barrel chamber, mine tailing discharge pipe (13), be connected bubble generator outfan medicine
Agent feed pipe (14), the lower end of cylinder exports (15) for concentrate, and the periphery wall of middle hypomere of cylinder (10) is arranged with connection electricity
The electromagnetic coil assembly (20) in source；Described mine tailing discharge pipe (13) be by the vertical tube positioned at bottom and superposed transverse tube this
The bend pipe that two parts are constituted, vertical tube and cylinder (10) arrange with core and the mouth of pipe of vertical tube is downward.
2. flotation column according to claim 1 it is characterised in that：Described cylinder (10) includes the direct tube section of same core arrangement
(16) and conical cylinder section (17), the heavy caliber end of conical cylinder section (17) is coincide with the lower end of direct tube section (16) and is connected, conical cylinder section (17)
Small-caliber end is located at the lower end of cylinder (10), and described electromagnetic coil assembly (20) is coincide and is set in the outer peripheral face of conical cylinder section (17)
On.
3. flotation column according to claim 2 it is characterised in that：Be provided with described cylinder (10) communicate with barrel chamber overflow
Stream drainage conduit (12), overflow drainage conduit (12) and the contour and positioned opposite upper end side wall in cylinder (10) of ore pulp feed pipe (11)
Place.
4. flotation column according to claim 3 it is characterised in that：Described overflow drainage conduit (12) passes through connecting tube and ore pulp
Feed pipe (11) is connected, and connecting tube is provided with check valve, the unlatching conducting direction of described check valve is from overflow drainage conduit
(12) point to the direction of ore pulp feed pipe (11).
5. the method for floating of the lean iron mine of column flotation as described in a kind of any one as claim 1-4, it comprises the following steps：
S1) liquid medicine and compressed air are injected into flotation column by booster pump, described liquid medicine includes 0.8-1.2g/
The collecting agent of L, the inhibitor of 0.4-0.6g/L and concentration are the foaming agent of 2.0-3.0g/L, and the flow of described booster pump is
500-800L/h；
S2) whne in flotation column liquid level reach overflow drainage conduit (12) the mouth of pipe at when, open mine tailing discharge pipe (13) with
And concentrate exports the valve at (15) place, by the power on of electromagnetic coil assembly (20), simultaneously through ore pulp feed pipe (11) to floating
Select and in post, squeeze into ore pulp, the material discharged from concentrate outlet (15) afterwards is target product, the matter of lean iron mine in described ore pulp
Amount percentage ratio is 20%-50%.
6. according to claim 5 lean iron mine method for floating it is characterised in that：Described step S1) in collecting agent be ten
One or more of diamidogen, ether amines and fatty amine, inhibitor is starch and/or carboxymethyl cellulose, and foaming agent is terpenic oil
And/or glycol polypropylene.
7. according to claim 5 lean iron mine method for floating it is characterised in that：In described ore pulp, the particle diameter of lean iron mine is less than
200μm.
8. according to claim 5 lean iron mine method for floating it is characterised in that：The energising of described electromagnetic coil assembly (20)
Electric current is 0.2-0.7A.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410211777.2A CN103977913B (en) | 2014-05-19 | 2014-05-19 | Flotation column and the method for floating of lean iron mine |
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| CN201410211777.2A CN103977913B (en) | 2014-05-19 | 2014-05-19 | Flotation column and the method for floating of lean iron mine |
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| CN103977913A CN103977913A (en) | 2014-08-13 |
| CN103977913B true CN103977913B (en) | 2017-03-08 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104815753B (en) * | 2015-04-30 | 2017-02-22 | 中国地质科学院矿产综合利用研究所 | Floating agglomeration electromagnetic fine selection equipment |
| CN108499721A (en) * | 2017-02-28 | 2018-09-07 | 中国矿业大学(北京) | A kind of classification-eddy flow-microbubble floatation column and technique for iron ore reverse flotation |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US5182014A (en) * | 1990-05-30 | 1993-01-26 | Goodman Laurence R | Method and apparatus for increasing flotation cell recovery and grade of complex copper-containing ores |
| CN100429001C (en) * | 2006-11-25 | 2008-10-29 | 中国矿业大学 | Column type short flow reverse floatation process and apparatus for hematite |
| CN202638582U (en) * | 2012-03-07 | 2013-01-02 | 昆明理工大学 | Magnetic flotation column |
| CN103056037A (en) * | 2013-01-04 | 2013-04-24 | 任逸 | Special microbubble flotation cell for reverse flotation of oxidized ores |
| CN103056028B (en) * | 2013-01-23 | 2015-06-24 | 沈阳华大科技有限公司 | Magnetic ore separation equipment and method |
| CN203862407U (en) * | 2014-05-19 | 2014-10-08 | 合肥学院 | Flotation column |
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