CN1052439A - Floatation of iron ore with acidic medium in fill-type static floatation column - Google Patents
Floatation of iron ore with acidic medium in fill-type static floatation column Download PDFInfo
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- CN1052439A CN1052439A CN 90109001 CN90109001A CN1052439A CN 1052439 A CN1052439 A CN 1052439A CN 90109001 CN90109001 CN 90109001 CN 90109001 A CN90109001 A CN 90109001A CN 1052439 A CN1052439 A CN 1052439A
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Abstract
A kind of floatation of iron ore with acidic medium in fill-type static floatation column.Its flotation column is by cylinder, filler, compressed air hose, mine-feeding equipment, froth pulp overflow launder, mine tailing awl, and adjuster and washing pipe are formed.Its filler system orifice plate ripple structured packing, perforated plate corrugated upper punch has some apertures.The flotation pulp of flotation column feed port changes its Acidity of Aikalinity with acid, and the pH value that makes flotation pulp is for acid.The iron ore that the present invention carries out under the solutions of weak acidity separates, and ore particle absorption deposition can not take place filling surface in the post, makes packed static flotation column normally running continuously for a long time.
Description
The invention belongs to and utilize floatation of iron ore with acidic medium in fill-type static floatation column.
Packed static flotation column claims Static Flotation Column again, is by David C doctor Yang of Michigan, United States polytechnical university development, and obtains United States Patent (USP) power, the patent No.: 4,592,834 on June 3rd, 1986.Packed static flotation column and agitation impeller flotator relatively, that flotation column has is simple in structure, movement-less part, energy-conservation, many advantages such as the operating maintenance expense is low and sorting index is good.But the bubble generator of conventional flotation column easily stops up, and the minute bubbles that produce from the pillar bottom can influence adhering to of bubble and ore particle along with rising in post has the big phenomenon of the change of annexing.The characteristics of packed static flotation column are to be full of the medium that is built up by corrugated plating in the post, bubble generator that need not be special.Axial filling medium provides the directly passage aisle of contact of ore particle-bubble, and ore pulp and bubble adverse current are moved, and have avoided the immixture in collecting district, make the froth bed balance.Simultaneously, because siphonic effect, filling medium makes foam layer height unrestricted.
First the successful application of YangShi packed static flotation column is the nonmagnetic taconite ore that sorts not desliming with one section static flotation, and sorting index is higher than eight sections common flotation indexs.If be used for coal separation, the efficient of packed static flotation column can reach the efficient that heavy-fluid is separated.For sorting copper mine stone and some non-metallic ores, one section packed static flotation column has obtained the rate of recovery more much higher than multistage common flotation.
But all true chamber unit of testing of above-mentioned all tests is tested, and does not carry out the long-time continuous running.
Carrying out small-sized long run test under several weak alkaline medium (PH8.5-8.6) different condition on the basis of single test, each test was turned round 48 hours to 168 hours continuously, find that running is after 2 days continuously, promptly in post, form the absorption of sludge and the deposition of ore particle on the filling surface, so that stop up, cause flotation effect sharply to worsen, lose the effect of sorting.Under various experimental conditions when this phenomenon appears at flotation pulp and is alkalescent.As: sort raw ore with stainless steel orifice plate ripple filler conventional dose; Phosphor bronze Lamb wave filler conventional dose sorts raw ore; Chemical pure medicament (enuatrol) Stainless Steel orifice plate ripple filler sorts raw ore; Stainless Steel orifice plate ripple filler conventional dose sorts strong magnetic concentrate etc.
The objective of the invention is: the sludge ore particle absorption deposition blockage problem in turning round continuously when selecting iron for solving packed static flotation column, we have taked following technological means.
Use for reference the interrelated data of Yang, shown in the structure (see figure 1) of the packed static flotation column that we develop, it is made up of cylinder (1), filler (2), compressed air hose (3), mine-feeding equipment (4), froth pulp overflow launder (5), mine tailing awl (6), adjuster (7) and washing pipe (8) etc.The filler (2) of packing in the cylinder (1), filler are to adopt orifice plate ripple structured packing (see figure 2), and every dish filler is to be built up by a lot of film perforation plate corrugated plates.The ripple of every film perforation plate corrugated plate is 30 °-45 with level approximately, and towards having several apertures, adjacent two arrangement should make its ripple vertical mutually.Upper and lower two dish fillers also are 90 ° of interconnected (see figure 3)s.Like this, the compressed air that charges into from the cylinder bottom can be separated into a lot of tiny bubbles, thereby has replaced the bubble generator of conventional flotation column.Simultaneously, form the circuitous narrow duct of many well-regulated bendings between the corrugated plate, the choosing branch space that provides flow of slurry to contact with the static convection current of bubble.Aperture on the corrugated plate has been facilitated the horizontal mixing of fluid, counterpressure.Because in Static Flotation Column, by ore pulp after the medicament effect and the tiny bubble that is broken into by structured packing be in passive flow in the very long duct of the formed complications of specific filler fully nearly convection current contact, make hydrophobicity ore particle and the sorting of hydrophily ore particle more perfect.And, along with the high increase of post, realize selected more repeatedly, thereby can be with the roughly selecting of conventional flotation, scan, selected operation is incorporated in the same equipment, once sort and can obtain final concentrate and tailings product.
For packed static flotation column can be applied in the continuity production practices of Iron Ore Flotation stone, and satisfy following condition: Packed Flotation Columns adopts the Lamb wave structured packing; The Iron Ore Flotation thing comprises magnetic iron ore, martite, bloodstone, limonite; Use the floatation of iron mineral conventional dose.Invent a kind of process conditions, make its Packed Flotation Columns through the long-time continuous running, filling surface does not have the absorption deposition of ore particle.
Iron ore flotation principle process (see figure 4) after levigate raw ore ore pulp fully acts on floating agent in tank diameter, feeds in the packed static flotation column with the feed port of speed through the cylinder middle part of control.The floatability ore particle rises to the top attached to duct, bubble upper edge and is discharged by the froth pulp overflow launder, becomes the concentrate product; Non-floatability ore particle drops to the mine tailing mouth with flow of slurry and discharges the formation mine tailing along the duct.
The ore pulp of packed static flotation column middle part feed port is to use acid to change the Acidity of Aikalinity of its flotation pulp, makes the pH value of flotation pulp be acidity, i.e. PH=3-6.5.Carry out flotation under acid condition, flotation column top spray water adds after regulating pH value with acid again, also can use general industrial water.
Advantage of the present invention:
The packed static flotation column internal flow, the iron ore flotation that carries out under the weak acidic medium condition separates, and the absorption deposition of ore particle can not take place in filling surface in the post, makes the normally running continuously for a long time of filling flotation column, does not stop up.
Description of drawings:
Fig. 1 is a packed static flotation column
Wherein: (1) expression cylinder
(2) expression filler
(3) expression compressed air hose
(4) expression mine-feeding equipment
(5) expression froth pulp overflow launder
(6) expression mine tailing awl
(7) expression adjuster
(8) expression washing pipe
Fig. 2 is the structured packing of orifice plate ripple
Fig. 3 is the interconnected figure of upper and lower two dish fillers
Fig. 4 is the iron ore flotation principle flow chart
Embodiment 1:
Certain density ore pulp after raw ore is levigate after the adding collecting agent is sized mixing in tank diameter, enters in another tank diameter, adds acid and sizes mixing, and (also can add acid earlier), sour consumption is the PH=5.5-6.0 that makes ore pulp, feeds then to carry out sorting in the Static Flotation Column.The shower water at cylinder top will have special water box that water is acidified to PH=5.5-6, and then feeds in the flotation column.
Embodiment 2
Sort neat dashan concentrator flotation section and give the ore deposit, the neat dashan concentrator ore dressing of Anshan iron and steel plant principle process is stage grinding-gravity treatment-weak magnetic-strong magnetic-flotation flowsheet.Wherein flotation section is for handling (low intensity magnetic separation-smart tail+low intensity magnetic separation=smart tail+middle magnetic machine concentrate+strong magnetic machine concentrate) product mix, and this product mix enters after concentrating one slightly, the flotation device flotation of three essences.
The raw ore of static flotation long run test is given the ore deposit for the flotation section of producing existing factory, and grade is 31-32%Fe.The medicament that uses is given the ore deposit as petroleum sodium sulfonate+tall oil 6.33Kg/t, and wherein tall oil accounts for 3-5%, and sulfuric acid 0.8Kg/t gives the ore deposit, and flotation pulp PH is 5.8-6.5.Through 49 hours continuous running, the filling surface of flotation column did not have sludge absorption deposition.
Embodiment 3:
Sort the strong magnetic concentrate of man of department battalion's pilot plant.
Battalion of man of department iron ore dressing principle process is ore grinding-weak magnetic-strong magnetic-flotation combined flow process, and the flotation section is for regrinding-desliming-thick three essences.
Static flotation long run test be strong magnetic concentrate in the above-mentioned flow process to the ore deposit, grade is 40%Fe.Flow process is ore grinding-static flotation.
The medicament kind consumption is: sulfuric acid 1.5Kg/t gives the ore deposit, and petroleum sodium sulfonate 4.8Kg/t gives the ore deposit.30 ℃ of flotation pulp concentration 20%, temperature, PH6.
After 5 days continuous running, the flotation column filling surface does not have the absorption deposition of sludge.Three days the average index in back is: head grade 40.7%, concentrate grade 62.24%, tailings grade 17.0%, operation recovery 80.11%.
Embodiment 4:
Sort battalion of man of department iron ore tcrude ore
The flow process of static flotation long run test is: an ore grinding-desliming-static flotation.Ore grinding of raw ore to-250 orders account for 84-85%, and levigate product is deviate from-10 microns thin mud through desliming, adds sulfuric acid then, and petroleum sodium sulfonate (adding behind the sulfuric acid) feeds flotation under the weak acidic medium condition in the filling flotation column, ore pulp PH5～6 then.
Through 5 days continuous running, the filling surface of flotation column did not have the absorption deposition of sludge.
Sorting index is: head grade 27.50%, concentrate grade 60.71%.
Tailings grade 8.70%, the quiet floating rate of recovery 80.52%.
Claims (6)
1, a kind of packed static flotation column, it has cylinder, filler, compressed air hose, mine-feeding equipment, froth pulp overflow launder, mine tailing awl, adjuster and washing pipe, the filler of packing in the cylinder, filler are to adopt the structured packing of orifice plate ripple, and every dish filler is to be built up by a lot of film perforation plate corrugated plates, the ripple of every film perforation plate corrugated plate and level are 30-45 ° of angle, and it is characterized in that has several apertures perforated plate corrugated upper punch.
2, the iron ore flotation principle process is after levigate raw ore ore pulp fully acts on floating agent in tank diameter, the feed port of speed through the cylinder middle part with control feeds in the packed static flotation column, the floatability ore particle rises to the top attached to duct, bubble upper edge and is discharged by the froth pulp overflow launder, become the concentrate product, non-floatability ore particle drops to the mine tailing mouth with flow of slurry and discharges the formation mine tailing along the duct, the ore pulp that it is characterized in that packed static flotation column middle part feed port is to use acid to change the Acidity of Aikalinity of its flotation pulp, the pH value that makes flotation pulp is for acid, be PH=3-6.5, under acid condition, carry out flotation, flotation column top spray water is regulated pH value with acid and is added also available general industrial water again.
3, the flotation pulp of packed static flotation column as claimed in claim 2 is characterized in that the best PH=5.5-6 of flotation pulp, and the shower water at cylinder top will have special water box that water is acidified to PH=5.5-6, and then feeds in the flotation column.
4, the flotation pulp of packed static flotation column as claimed in claim 2 is characterized in that the flotation section is to ore deposit, the PH=5.8-6.5 of its flotation pulp.
5, the flotation pulp of packed static flotation column as claimed in claim 2 is characterized in that strong magnetic concentrate is to ore deposit, the PH=6 of its flotation pulp.
6, the flotation pulp of packed static flotation column as claimed in claim 2 is characterized in that tcrude ore gives the ore deposit, the PH=5-6 of its flotation pulp.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 90109001 CN1052439A (en) | 1990-11-06 | 1990-11-06 | Floatation of iron ore with acidic medium in fill-type static floatation column |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 90109001 CN1052439A (en) | 1990-11-06 | 1990-11-06 | Floatation of iron ore with acidic medium in fill-type static floatation column |
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| CN1052439A true CN1052439A (en) | 1991-06-26 |
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| CN 90109001 Pending CN1052439A (en) | 1990-11-06 | 1990-11-06 | Floatation of iron ore with acidic medium in fill-type static floatation column |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN101850307A (en) * | 2010-06-13 | 2010-10-06 | 中国铝业股份有限公司 | Rotation-free step flotation method |
| CN1765520B (en) * | 2005-09-22 | 2011-05-18 | 毕舒 | Method for extracting Fe from ion ore tailings |
| CN101357353B (en) * | 2008-09-02 | 2012-06-13 | 汪德进 | Internal circulation type foam flotation tower |
| CN101642732B (en) * | 2009-08-06 | 2012-10-10 | 北京矿冶研究总院 | Mineral flotation column |
-
1990
- 1990-11-06 CN CN 90109001 patent/CN1052439A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1765520B (en) * | 2005-09-22 | 2011-05-18 | 毕舒 | Method for extracting Fe from ion ore tailings |
| 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 |
| CN101357353B (en) * | 2008-09-02 | 2012-06-13 | 汪德进 | Internal circulation type foam flotation tower |
| CN101642732B (en) * | 2009-08-06 | 2012-10-10 | 北京矿冶研究总院 | Mineral flotation column |
| CN101850307A (en) * | 2010-06-13 | 2010-10-06 | 中国铝业股份有限公司 | Rotation-free step flotation method |
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