CN102698880B - Foam controlling and removing method for floatation - Google Patents
Foam controlling and removing method for floatation Download PDFInfo
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- CN102698880B CN102698880B CN201210166282.3A CN201210166282A CN102698880B CN 102698880 B CN102698880 B CN 102698880B CN 201210166282 A CN201210166282 A CN 201210166282A CN 102698880 B CN102698880 B CN 102698880B
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Abstract
The invention relates to a foam controlling and removing method for floatation and belongs to the technical field of floatation for mineral processing. The method disclosed by the invention comprises the steps of: introducing the floatation foams into a foam collection top tank, flushing and sliding the foams from the sides of the foam collection top tank by uniformly distributed water nozzles to enable the foams to enter a centrifugal vortex barrel body; starting volute plates in the centrifugal vortex barrel body to rotate, throwing the fallen foams to the barrel wall, and crushing the foams under the action of the external force and upper rushing water, and enabling the crushed foams to converge along the barrel body to form ore slurry, and enabling the ore slurry to enter the ore-discharging bottom tank from a conical ore-discharging hole on the lower part of the barrel body; flushing by the water pipe on the front end of the ore-discharging bottom tank the foam ore slurry de-foamed by the centrifugal barrel body to rush to the next step from the ore-discharging hole locate on the rear end. The method disclosed by the invention can be used for carrying out efficient, continuous and pollution-free treatment on the foams difficultly to control in floatation, the difficult problems that collecting agents like amine produce much more viscous and low-fluidity foams that result in difficulty in controlling foams in the mineral floatation are solved, the floatation work is finished smoothly, the grading index is increased, thereby being beneficial to efficient processing and comprehensive utilization of such ore resources.
Description
Technical field
The present invention relates to a kind of method of control froth breaking of flotation froth, belong to mineral processing flotation technology field.
Background technology
Flotation is one of most popular method of mineral separation and enrichment, is specially adapted to sorting of particulate and superfine particle material.The foam producing in floatation process is the effective carrier of mineral enrichment, and scraping in time, circulate and controlling of flotation froth is the key of flotation.The flotation operation of most of mineral, the easy regulation and control of froth bed, floatation process easily completes, but in the flotation operation of some mineral, foam viscosity is large, and mobility is little, foam bed thickness, foam volume is extremely abundant, be difficult to froth breaking, be difficult to discharge from foam tank, cause the foam in flotation cell to be difficult to scrape in time simultaneously, the mineral that adhere to come off, and index declines.Foam difficulty disappears, and difficulty is controlled so that flotation operation cannot carry out.Well-known example is sulfuration-amine method flotation of zinc oxide ore.The flotation of sulfuration-amine method is to sort the most general method of zinc oxide ore, yet, amine is extremely responsive to sludge, no matter be laboratory small-scale test or commerical test, flotation froth amount is huge, poor fluidity, comprise roughly select, foam is all difficult to control in the selected and flow process of scanning, even more serious in commerical test, when throughput is large, cannot produce at all.During laboratory small-scale test, by artificial collection foam, after long-time froth breaking, can proceed test, can obtain more than 80% zinc recovery, once but the definite technical scheme of small-scale test is used industrial production, because foam is uncontrollable, even if the treating capacity of ore is little, rate of recovery index also can only remain on 50% left and right, this is mainly because flotation froth is processed not in time, and flotation froth can not effectively be discharged from foam tank, causes flotation froth to rest in flotation trough, the ore particle being attached on bubble comes off, and causes the rate of recovery to reduce.Therefore a large amount of zinc oxide ore resources can not get good utilization, and the wasting of resources is huge, and same situation also appears in the practice of amine collector collecting andalusite mine etc.
About foam control method, common method is with high pressure water flushing froth breaking foam, but when processing ore deposits such as amine method Flotation of Zinc Oxide, andalusite, high pressure water flushing also cannot be dealt with problems, can cause foam to depart from foam tank, floating everywhere in workshop, cannot produce, also can cause a large amount of consumption of water resource and cause pulp density to reduce affects subsequent handling.In addition, another kind of method is to use a large amount of defoamer froth breakings, but defoamer antifoaming speed is slow, be difficult to realize timely froth breaking and work continuously, not only can increase financial cost in addition, and affect flotation pulp character and flotation effect, reduce the rate of recovery, also can cause environmental pollution simultaneously.Application number is the beneficiation method that 200610010674.5 patent has proposed a kind of zinc oxide ore, mentions the first desliming amine method flotation of flotation again, has obtained good result, but the contained zinc oxide mineral of mud that remove are lost, and cause the wasting of resources.In floatation process, reduce mine-supplying quantity, reduce flotation pulp concentration, extend flotation time, can be so that froth bed become relatively controlled, but device processes amount is little, and flotation cost increases.Therefore, for this technical barrier of processing of difficulty control flotation froth, carry out the tackling key problem research of decades both at home and abroad, all do not obtained so far good progress.
Summary of the invention
A kind of method that the object of this invention is to provide efficient, continuous, free of contamination flotation froth foam control froth breaking, controlled and the flow process that realizes flotation froth is continuous, a difficult problem for large, the thickness of foam volume, the difficult control of the little foam causing of mobility in the time of can solving the collecting agent flotation mineral such as amine, improve sorting index, be conducive to highly-efficient processing and the comprehensive utilization of such mineral resources.
The present invention is achieved through the following technical solutions: first flotation froth is introduced to foam and collected inverted draw cut, collect inverted draw cut side enter centrifugal vortex cylindrical shell with the uniform sliding foam of sprinkler head punching from foam; Start scroll sheet in centrifugal vortex cylindrical shell and rotate, the foam being dropped in top under is lost and is thrown on barrel, make foam external force and above broken under the effect of water punching, along cylindrical shell, accumulate ore pulp and enter ore discharge kerve by the conical gape below cylindrical shell; By ore discharge kerve front end water pipe, the foam ore pulp after centrifugal cylindrical shell froth breaking is poured to next process from the gape of rear end, the controlled and flow process that realizes flotation froth is continuous.
It is that order is joined from top to bottom that described foam is collected inverted draw cut, centrifugal vortex cylindrical shell and ore discharge kerve; It is taper type wide at the top and narrow at the bottom that foam is collected inverted draw cut, or adopts upper and lower wide rectangular channel; The cylindrical shell of centrifugal vortex cylinder is conical or cylindrical, and the gape of cylindrical shell below is truncated cone.
Scroll sheet takes the mode being arranged symmetrically with to be fixed on a central shaft, and central shaft upper end is extended foam and collected inverted draw cut, and axle head is loaded on bearing, and central shaft and flotation device share same motor or configure separately motor, by belt, are connected.
The present invention has the following advantages and good effect:
The feature of the difficult controls such as 1,, thickness large for flotation froth amount, mobility be little and the realistic problem of existence, the invention provides a kind of foam, method and apparatus of the control froth breaking of the high-efficient simple of broken foam, last ore discharge more first collected, completing smoothly of the difficult whole flotation flowsheet of controlling of the foams such as sulfuration-amine method Flotation of Zinc Oxide ore deposit can be ensured, sorting index can be improved.
2, this new method is started with from foam tank, has adopted new-type multifunctional foam groove, has solved the drawback of traditional foam tank, does not change miscellaneous equipment, regime of agent and the floatation process of floatation process, is convenient to arrange and operation simple possible.
3, this method does not adopt defoamer, has avoided flotation pulp character to pollute and environmental pollution.This method has also solved the inefficiency problem of setting up the methods such as foam cell froth breaking such as strange land.
4, this method strong adaptability, is applicable to the flotation operation that foam volume is large and foam difficulty is controlled.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the present invention is further described.
Fig. 1 is that the new-type foam tank that adopts of the method is along the cutaway view of horizontal center.
Fig. 2 is the structural representation of the centrifugal vortex cylindrical shell that adopts of the method.
In Fig. 1,2: 1, foam is collected inverted draw cut, 2, centrifugal vortex cylindrical shell, 3, ore discharge kerve, 4, sprinkler head, 5, central shaft, 6, scroll sheet, 7, centrifugal vortex cylinder gape, 8, bearing, 9, water pipe, 10, gape.
The specific embodiment
Referring to Fig. 1,2, in flotation agitator or flotation cell, add the medicaments such as amine collector, foaming agent, air flotation in flotation device, at flotation cell, produce a large amount of foams, according to foam volume, set the scraper velocity above flotation device, foam is scraped into foam tank of the present invention.This foam tank is divided into three parts from top to bottom, is respectively foam collection inverted draw cut 1, centrifugal vortex cylindrical shell 2 and the total height of 3, three parts of ore discharge kerve and the height of conventional rectangle cell body and is more or less the same.Foam is collected the even a plurality of sprinkler heads 4 of inverted draw cut 1 side arrangement, for rushing sliding foam, enters centrifugal vortex cylindrical shell 2, also plays the effect of broken foam simultaneously, and the water yield and hydraulic pressure size regulate according to foam quality.Centrifugal vortex cylindrical shell 2 centers are provided with vertical central shaft 5, on central shaft 5, arrange a plurality of scroll sheets 6, and be arranged symmetrically with, periphery is closed cylinder, cylindrical shell below is conical centrifugal vortex cylinder gape 7, central shaft 5 upper ends are bearing 8, connect motor drive central shaft 5 high speed rotating by belt.The rotation of central shaft 5 drives the rotation of scroll sheet 6, foam under scroll sheet 6 drops top is lost the barrel of throwing at centrifugal vortex cylindrical shell 2, foam external force and above broken under the effect of water punching, along cylindrical shell, accumulate ore pulp and enter ore discharge kerve 3 by the conical gape 7 below cylindrical shell, scroll sheet 6 and central shaft 5 high speed rotating, make foam attached to it produce centrifugal action, with larger external force, lose and throw at barrel, foam is broken in time, simultaneously, scroll sheet 6 can produce whirlwind effect, foam ore pulp after fragmentation is discharged to centrifugal cylindrical shell 2 in time, the centrifugal vortex cylinder of taper shape gape 7 by below is discharged.Ore discharge kerve 3 is ore discharge device, and front end arranges water pipe 9, and rear end is gape 10, and the foam ore pulp after centrifugal cylindrical shell 2 froth breakings is arranged in time into next process, completes working continuously of flotation froth collection, froth breaking and discharge.
Embodiment: zinc oxide ore sulfuration-amine method flotation foam control.
Not desliming of the zinc oxide ore ore pulp that is 20%～30% by mass percentage concentration is introduced in agitator, according to the definite regime of agent of small-scale test, adding vulcanized sodium sizes mixing, add again the medicaments such as 18 amine collecting agents and carry out the flotation of zinc oxide ore sulfuration-amine method, hydrophobic zinc oxide mineral are attached on bubble, froth bed large in mineral syrup liquid formation volume, poor fluidity swims, the foam that scraping plate of flotation machine is scraped froth bed in foam tank is fast collected in inverted draw cut, and the sliding flotation froth of a plurality of sprinkler head punchings that foam is collected inverted draw cut side arrangement enters centrifugal vortex cylindrical shell; Scroll sheet is high speed rotating under the drive of cylindrical shell central shaft, foam under being dropped in top is lost the barrel of throwing at centrifugal vortex cylindrical shell, foam external force and above broken under the effect of water punching, along cylindrical shell, accumulate ore pulp and enter ore discharge kerve by the conical gape of cylindrical shell below; By ore discharge kerve front end water pipe, the foam ore pulp after centrifugal cylindrical shell froth breaking is arranged in time into next process, the controlled and flow process that realizes flotation froth is continuous, completes smoothly flotation operation.Under the condition of the definite regime of agent of small-size laboratory, industrial production can obtain the good index of approximate small-scale test, raw ore zinc grade 4.0～9.5%, and zinc oxygenation efficiency more than 80%, obtains the zinc oxide concentrate of zinc grade 14%～22%, the rate of recovery 65%～85%.
Claims (1)
1. a method for flotation control froth breaking, is characterized in that: first flotation froth is introduced to foam and collected inverted draw cut, collect inverted draw cut side enter centrifugal vortex cylindrical shell with the uniform sliding foam of sprinkler head punching from foam; The scroll sheet starting in centrifugal vortex cylindrical shell rotates, foam under being dropped in top is lost and is thrown on barrel, make foam external force and above broken under the effect of water punching, along cylindrical shell, accumulate ore pulp and enter ore discharge kerve by the conical gape below cylindrical shell, by ore discharge kerve front end water pipe, the foam ore pulp after centrifugal cylindrical shell froth breaking is poured to next process from the gape of rear end; It is that order is joined from top to bottom that wherein said foam is collected inverted draw cut, centrifugal vortex cylindrical shell and ore discharge kerve; It is taper type wide at the top and narrow at the bottom that foam is collected inverted draw cut, or adopts upper and lower wide rectangular channel; Described centrifugal vortex cylindrical shell is conical or cylindrical, the gape that center is provided with vertical central shaft and cylindrical shell below is truncated cone, described scroll sheet takes the mode being arranged symmetrically with to be fixed on described central shaft, described central shaft upper end is extended foam and is collected inverted draw cut, axle head is loaded on bearing, central shaft and flotation device share same motor or configure separately motor, by belt, are connected.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210166282.3A CN102698880B (en) | 2012-05-26 | 2012-05-26 | Foam controlling and removing method for floatation |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210166282.3A CN102698880B (en) | 2012-05-26 | 2012-05-26 | Foam controlling and removing method for floatation |
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| CN102698880A CN102698880A (en) | 2012-10-03 |
| CN102698880B true CN102698880B (en) | 2014-10-01 |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105327786A (en) * | 2015-09-24 | 2016-02-17 | 云南三明鑫疆磷业股份有限公司 | Method for removing foam generated in collophanite normal-temperature positive-floatation |
| CN111056681A (en) * | 2019-12-30 | 2020-04-24 | 宁夏磐泰能源科技有限公司 | Waste acid is fibre defoaming device for fan import |
| CN111570080B (en) * | 2020-07-02 | 2022-02-22 | 长沙有色冶金设计研究院有限公司 | Spodumene beneficiation process |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2251442Y (en) * | 1996-01-13 | 1997-04-09 | 潘和镛 | Microfroth flotation machine |
| CH694286A5 (en) * | 2003-10-29 | 2004-11-15 | Paul Gmeiner | Assembly to clean liquid of gas and water, e.g. electrical insulation oils and impregnation resins, has vessel where liquid stream(s) strike paddles on rotating vertical shaft with foam breaker propeller(s) |
| RU2275227C1 (en) * | 2004-11-09 | 2006-04-27 | Государственное образовательное учреждение высшего профессионального образования Санкт-Петербургский государственный горный институт им. Г.В. Плеханова (технический университет) | Centrifugal foam suppressor |
| CN201147723Y (en) * | 2007-12-27 | 2008-11-12 | 金川集团有限公司 | Micro-bubble jet flotation machine |
| CN201899905U (en) * | 2010-12-18 | 2011-07-20 | 广东生益科技股份有限公司 | Conical piston defoaming device |
| CN102179309A (en) * | 2010-12-27 | 2011-09-14 | 昆明理工大学 | Foam controlling and flotation method for zinc oxide ore |
| CN102389649A (en) * | 2011-10-18 | 2012-03-28 | 江苏浩特隆搅拌设备有限公司 | Spiral defoamer |
-
2012
- 2012-05-26 CN CN201210166282.3A patent/CN102698880B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2251442Y (en) * | 1996-01-13 | 1997-04-09 | 潘和镛 | Microfroth flotation machine |
| CH694286A5 (en) * | 2003-10-29 | 2004-11-15 | Paul Gmeiner | Assembly to clean liquid of gas and water, e.g. electrical insulation oils and impregnation resins, has vessel where liquid stream(s) strike paddles on rotating vertical shaft with foam breaker propeller(s) |
| RU2275227C1 (en) * | 2004-11-09 | 2006-04-27 | Государственное образовательное учреждение высшего профессионального образования Санкт-Петербургский государственный горный институт им. Г.В. Плеханова (технический университет) | Centrifugal foam suppressor |
| CN201147723Y (en) * | 2007-12-27 | 2008-11-12 | 金川集团有限公司 | Micro-bubble jet flotation machine |
| CN201899905U (en) * | 2010-12-18 | 2011-07-20 | 广东生益科技股份有限公司 | Conical piston defoaming device |
| CN102179309A (en) * | 2010-12-27 | 2011-09-14 | 昆明理工大学 | Foam controlling and flotation method for zinc oxide ore |
| CN102389649A (en) * | 2011-10-18 | 2012-03-28 | 江苏浩特隆搅拌设备有限公司 | Spiral defoamer |
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