CN106492999B - A kind of cancellation element of flotation froth - Google Patents
A kind of cancellation element of flotation froth Download PDFInfo
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- CN106492999B CN106492999B CN201611033943.XA CN201611033943A CN106492999B CN 106492999 B CN106492999 B CN 106492999B CN 201611033943 A CN201611033943 A CN 201611033943A CN 106492999 B CN106492999 B CN 106492999B
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- foam
- venturi tube
- groove body
- collecting tank
- flotation
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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
- B03D1/14—Flotation machines
- B03D1/1443—Feed or discharge mechanisms for flotation tanks
- B03D1/1462—Discharge mechanisms for the froth
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Abstract
The present invention relates to a kind of cancellation elements of flotation froth, belong to mineral processing flotation technology field.The cancellation element of the flotation froth, including superposed foam collecting tank and the Venturi tube for being connected to foam collecting tank, the groove body top surface of foam collecting tank is uniformly provided with sprinkler head spray orifice, groove body is made of the square groove on top and the cone tank of lower part, taper trench bottom is equipped with gape, Venturi tube includes that two equal straight pipes of both ends diameter, two contraction sections being connect respectively with straight pipe and the trunnion section for connecting two contraction sections, trunnion section are connected to by gape with groove body.The device can effectively be assembled foam, the stronger suction effect generated by the spray effect of foam tank upper end water and Venturi tube or similar device is vanished and is defoamed to it, after ore pulp after defoaming enters in pipe, next process is delivered to by aqueous medium, realizes the continuous, stable and efficient of production operation.
Description
Technical field
The present invention relates to a kind of cancellation elements of flotation froth, belong to mineral processing flotation technology field.
Background technology
Flotation is played as one of current main technique of preparing means in terms of processing particulate and fine grain teeth cloth ore
Highly important effect.The treatment process of zinc oxide ore includes mainly vulcanization-amine method, heating vulcanization-xanthate method, fat at present
Sour direct flotation method, flocculation-floatation etc..The floating joint of weight-, the floating joint of magnetic-also can be used for certain oxidase complex zinc ores
Etc. modes sorted.Wherein, vulcanization-amine method is heated due to being not necessarily to, and flotation effect is preferable, metal recovery rate height etc. and obtain
Most of zinc oxide select the application of factory, but the method is more sensitive to sludge and solubility salt, and not only reagent consumption amount is big, but also
The big viscosity of foam layer thickness of formation is big, and mobility is poor, it is difficult to eliminate so that cannot be effectively enriched with by floating mineral, very
To the phenomenon that there is overflow or " running slot ", recovery index in the industry is also tended to 50% or so.Main reason is that mistake
Thick froth bed prevents further enrichment and the floating of follow-up target minreal, and the particle partly to have floated due to not by
Discharge in time, is pulled from bubble and fallen off by ore pulp.The seriousness of this problem is not only to fail to provide limited zinc ore
Source is made full use of, and also causes no small economic loss to the production practices of enterprise.
It is conventional to be sprayed using with high-pressure washing water about the method for defoaming, i.e., in one end of foam tank with height
It presses hydraulic giant or is rinsed in a manner of water pipe, although the elimination to foam plays a role, water consumption is big, influences mine
Concentration is starched, subsequent dewatering operation is had some impact on, and it also requires constantly being regulated and controled to water according to foam state.
Another then defoamed by adding antifoaming agent, but the method not only increases production cost, pollutes the environment, new medicament
Addition flotation environment can also be impacted, or even destroy initial flotation conditions etc..
Application No. is 201510581438.8 patents to be improved to high-pressure atomization spray by the sprinkler head of conventional foam slot one end
Mouth, to form fan-shaped high-pressure water mist, though reducing water consumption and energy consumption to a certain extent, fan-shaped water mist is to long and narrow square
Shape foam tank area of effective coverage is small, and rinse capability is limited.
Application No. is a kind of centrifugation cartridge type flotation froth slots of 201220240162.9 Patent design, i.e., with centre axis
Dynamic scroll sheet high-speed rotation, foam to top falls and carries out centrifugal movement after rectangular channel, by top flushing water and centrifugal force
Effect make bubble burst, which is that cylindrical foam tank is difficult to effectively dock with the overflow section of flotation device,
It is difficult to effectively collect foam, and the connection of central shaft and motor is inconvenient.
Therefore, it is necessary to be directed to that flotation froth amount is big and foam difficult the problems such as disappearing proposes effective technical solution.
Invention content
The present invention be directed to zinc oxide ore and other mineral selections not during the foam difficulty that does not occur disappear problem and propose one
The cancellation element of kind of flotation froth, can effectively solve that amine collector occurs in floatation process because foam volume is big, viscosity is big,
The reasons such as poor fluidity and caused by the target minreal rate of recovery it is low the problems such as, to make full use of limited resources and increase the performance of enterprises
It is of great significance.The invention is realized by the following technical scheme.
A kind of cancellation element of flotation froth, including superposed foam collecting tank 2 and the text that is connected to foam collecting tank 2
3 top surface of groove body of venturi 5, foam collecting tank 2 is uniformly provided with sprinkler head spray orifice 1, and groove body 3 is by the square groove on top under
The cone tank in portion forms, and taper trench bottom is equipped with gape 4, and Venturi tube 5 includes two equal straight pipes of both ends diameter, divides
Two contraction sections not connect with straight pipe and the trunnion section for connecting two contraction sections, trunnion section pass through gape 4 and groove body 3
Connection.
Shrinkage ratio λ=d/D is 0.4~0.5 in the Venturi tube 5, and taper α is 1.6~2.0rad, and wherein D is venturi
Pipe straight pipe diameter, mm；D is trunnion section diameter, mm.
L1 in the Venturi tube 5:L2=2/6 ~ 4/6, wherein L1 are with first contraction section in aqueous medium flow direction
Length, L2 be with the length of second contraction section in aqueous medium flow direction.
The sprinkler head spray orifice（1）It is uniformly provided with 1 ~ 3 to be every square centimeter.
The operation principle of the cancellation element of the flotation froth is：
（1）Foam is scraped by scraping plate of flotation machine into foam collecting tank 2, and giant, foam will be inserted into sprinkler head spray orifice 1
In flushing water（Flushing water pressure is generally 0.4MPa）Effect is lower to enter groove body 3, due under width on the cone tank of 3 lower part of groove body
It is narrow so that foam is constantly assembled, collapsed；
（2）It is passed through the high speed water that water pump generates to 5 straight pipe of Venturi tube, according to Venturi effect（Venturi
effect）, restricted flow flow velocity when by the flow section of diminution increases, and low pressure is generated near fluid, to generate
Suction-operated, after the foam of whereabouts is aggregated, under the synergy that stronger suction power and sprinkler head spray, foam occurs broken
It goes out, the foam slurry of generation drains into next process by aqueous medium conveying.
To ensure Venturi tube to there is stronger suction to act at gape, through determination, larynx section shrinkage ratio λ and taper α are shadows
The biggest factor of minimum pressure in speaking pipe, and reduce taper or increase the shattered to pieces and discharge that shrinkage ratio is conducive to flotation froth.Really
Protecting inlet and outlet has larger pressure difference that can also enhance suction effect.When inlet and outlet pressure difference is 130kpa, managing interior minimum pressure can
Up to -400kpa or so.
The beneficial effects of the invention are as follows：
1, the flotation for the ore that and hardly possible big for zinc oxide ore and foam volume disappears, the device can carry out foam effectively poly-
Collection, the stronger suction effect generated by the spray effect of foam tank upper end water and Venturi tube or similar device break it
It goes out and defoams, after the ore pulp after defoaming enters in pipe, next process is delivered to by aqueous medium, realizes the company of production operation
It is continuous, stable and efficient.
2, this new method relies primarily on Venturi tube or the stronger suction effect of similar device generation is defoamed, and has
Have it is simple in structure, it is easy to operate, it is efficient, it is easy-maintaining the features such as.
3, foam tank used in the device is upper rectangle inferior pyramidal, i.e., construction wide at the top and narrow at the bottom, with cylindrical or other shapes
Foam tank compare, have and docked well with flotation device overflow section, the features such as effective area is big.
4, the device is not required to addition antifoaming agent or other new medicaments, is not required to that individual foam cell, energy conservation and environmental protection is arranged.
Description of the drawings
Fig. 1 is three dimensional structure diagram of the present invention；
Fig. 2 is schematic front view of the present invention.
In figure：1- sprinkler head spray orifices, 2- foam collecting tanks, 3- groove bodies, 4- gapes, 5- Venturi tubes.Wherein, D is text
Venturi straight pipe diameter（mm）, d is trunnion section diameter（mm）, α is taper（rad）, shrinkage ratio λ=d/D, L1 are with aqueous medium
The length of first contraction section in flow direction, L2 are with the length of second contraction section in aqueous medium flow direction.
Specific implementation mode
With reference to the accompanying drawings and detailed description, the invention will be further described.
Embodiment 1
As illustrated in fig. 1 and 2, the cancellation element of the flotation froth, including superposed foam collecting tank 2 be connected to foam
3 top surface of groove body of the Venturi tube 5 of collecting tank 2, foam collecting tank 2 is uniformly provided with sprinkler head spray orifice 1, and groove body 3 is by top
Square groove and lower part cone tank composition, taper trench bottom be equipped with gape 4, Venturi tube 5 include both ends diameter it is equal
Two straight pipes, two contraction sections being connect respectively with straight pipe and the trunnion section for connecting two contraction sections, trunnion section pass through
Gape 4 is connected to groove body 3.
Shrinkage ratio λ=d/D is 0.5 in the Venturi tube 5, and taper α is 2.0rad, wherein D=300mm, d=150mm；Text
L1 in venturi 5:L2=4/6, sprinkler head spray orifice（1）It is uniformly provided with 3 to be every square centimeter.
The zinc oxide ore for being 23%~33% by mass percentage concentration（The zinc oxide ore of the Yunnan 8.50wt% of grade containing zinc）
Agitator is introduced in the case of No severing mud to be stirred, and according to sulfidization-amine method and laboratory regime of agent, adds vulcanized sodium sulphur
Change, using lauryl amine or other amine medicaments as collecting agent.Since amine collector foams performance is good, so foaming agent can suitably add
Add or is not added with.It is agitated fully after, air flotation, formed thickness it is big, the froth bed that viscosity is big and mobility is poor.Flotation device is scraped
Plate scrapes foam to foam collecting tank 2, and foam glides aggregation under the flushing action of sprinkler head；Start water pump, according to venturi
Effect, when flow section of the high-velocity flow through diminution, generate larger suction effect, to which the foam near gape is in larger suction
It further glides and vanishes under row's power and flushing water synergy, the foam ore pulp of generation is delivered to next work by aqueous medium in pipe
Sequence, repetition is above-mentioned to scrape bubble operation, to realize the continuous of this process and stablize.For Yunnan grade containing zinc 8.50wt%'s
Zinc oxide ore, oxygenation efficiency 61.2%, floatation process carry out flotation using ammonium sulphide method, and it is good to sort process foam state, and obtains
Must contain zinc grade 40.46wt%, the rate of recovery 69.8% zinc concentrate.
Contrast test
If all materials, reagent and flow are constant, foam is directly eliminated into bubble by scraping plate of flotation machine using giant
Foam, the final zinc oxide ore for being directed to Yunnan grade containing zinc 8.50wt%, oxygenation efficiency 61.2%, floatation process use ammonium sulphide method
Flotation is carried out, sorts that process foam state is good, and obtains the zinc concentrate of grade containing zinc 35.30%, the rate of recovery 51.27%.
Embodiment 2
As illustrated in fig. 1 and 2, the cancellation element of the flotation froth, including superposed foam collecting tank 2 be connected to foam
3 top surface of groove body of the Venturi tube 5 of collecting tank 2, foam collecting tank 2 is uniformly provided with sprinkler head spray orifice 1, and groove body 3 is by top
Square groove and lower part cone tank composition, taper trench bottom be equipped with gape 4, Venturi tube 5 include both ends diameter it is equal
Two straight pipes, two contraction sections being connect respectively with straight pipe and the trunnion section for connecting two contraction sections, trunnion section pass through
Gape 4 is connected to groove body 3.
Shrinkage ratio λ=d/D is 0.4 in the Venturi tube 5, and taper α is 1.6rad, wherein D=300mm, d=120mm；Text
L1 in venturi 5:L2=2/6, sprinkler head spray orifice（1）It is uniformly provided with 1 for every square millimeter.
Embodiment 3
As illustrated in fig. 1 and 2, the cancellation element of the flotation froth, including superposed foam collecting tank 2 be connected to foam
3 top surface of groove body of the Venturi tube 5 of collecting tank 2, foam collecting tank 2 is uniformly provided with sprinkler head spray orifice 1, and groove body 3 is by top
Square groove and lower part cone tank composition, taper trench bottom be equipped with gape 4, Venturi tube 5 include both ends diameter it is equal
Two straight pipes, two contraction sections being connect respectively with straight pipe and the trunnion section for connecting two contraction sections, trunnion section pass through
Gape 4 is connected to groove body 3.
Shrinkage ratio λ=d/D is 0.4 in the Venturi tube 5, and taper α is 1.8rad, wherein D=300mm, d=120mm；Text
L1 in venturi 5:L2=3/6, sprinkler head spray orifice（1）It is uniformly provided with 2 for every square millimeter.
The specific implementation mode of the present invention is explained in detail above in association with attached drawing, but the present invention is not limited to above-mentioned
Embodiment within the knowledge of a person skilled in the art can also be before not departing from present inventive concept
Put that various changes can be made.
Claims (4)
1. a kind of cancellation element of flotation froth, it is characterised in that：Including superposed foam collecting tank（2）Be connected to foam
Collecting tank（2）Venturi tube（5）, foam collecting tank（2）Groove body（3）Top surface is uniformly several to be equipped with sprinkler head spray orifice
（1）, groove body（3）It is made of the square groove on top and the cone tank of lower part, taper trench bottom is equipped with gape（4）, Venturi tube
（5）Connect including two equal straight pipes of both ends diameter, two contraction sections being connect respectively with straight pipe and by two contraction sections
The trunnion section connect, trunnion section pass through gape（4）With groove body（3）Connection.
2. the cancellation element of flotation froth according to claim 1, it is characterised in that：The Venturi tube（5）Middle contraction
It is 0.4~0.5 than λ=d/D, taper α is 1.6~2.0rad, and wherein D is Venturi tube straight pipe diameter, mm；D is trunnion Duan Zhi
Diameter, mm.
3. the cancellation element of flotation froth according to claim 1, it is characterised in that：The Venturi tube（5）Middle L1:L2
=2/6 ~ 4/6, wherein L1 are with the length of first contraction section in aqueous medium flow direction, and L2 is in aqueous medium flow direction
The length of second contraction section.
4. the cancellation element of flotation froth according to claim 1, it is characterised in that：The sprinkler head spray orifice（1）It is every
Square centimeter is uniformly provided with 1 ~ 3.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201611033943.XA CN106492999B (en) | 2016-11-23 | 2016-11-23 | A kind of cancellation element of flotation froth |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611033943.XA CN106492999B (en) | 2016-11-23 | 2016-11-23 | A kind of cancellation element of flotation froth |
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| CN106492999A CN106492999A (en) | 2017-03-15 |
| CN106492999B true CN106492999B (en) | 2018-08-14 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107253770A (en) * | 2017-08-22 | 2017-10-17 | 彭从文 | Self-defoaming type sewage aeration pond |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AT502186B1 (en) * | 2005-08-01 | 2007-02-15 | Andritz Ag Maschf | DEVICE AND METHOD FOR FLOTING A LIQUID |
| CN101439315B (en) * | 2008-12-17 | 2013-03-13 | 中国铝业股份有限公司 | Flotation cell without transmission |
| CN102698474B (en) * | 2012-05-26 | 2014-07-02 | 昆明理工大学 | Method for treating uncontrollable flotation froth |
| CN202606289U (en) * | 2012-05-26 | 2012-12-19 | 昆明理工大学 | Blast seal type flotation defoaming foam tank |
| CN204121813U (en) * | 2014-08-28 | 2015-01-28 | 彝良驰宏矿业有限公司 | A kind of flotation froth flusher |
| CN204352597U (en) * | 2014-11-20 | 2015-05-27 | 中国矿业大学 | A kind of flotation concentrate bucket froth breaker |
| CN204447418U (en) * | 2015-02-04 | 2015-07-08 | 中国矿业大学 | Flotation froth breaking agitator |
| CN206404915U (en) * | 2016-11-23 | 2017-08-15 | 昆明理工大学 | A kind of cancellation element of flotation froth |
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