CN202724765U - Defoaming device for flotation concentrate froth from flotation column - Google Patents
Defoaming device for flotation concentrate froth from flotation column Download PDFInfo
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- CN202724765U CN202724765U CN 201220410582 CN201220410582U CN202724765U CN 202724765 U CN202724765 U CN 202724765U CN 201220410582 CN201220410582 CN 201220410582 CN 201220410582 U CN201220410582 U CN 201220410582U CN 202724765 U CN202724765 U CN 202724765U
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- flotation
- screen cloth
- stainless steel
- defoaming device
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Abstract
The utility model relates to a defoaming device for flotation concentrate froth from a flotation column, and belongs to the technical field of flotation. The device is especially suitable for flotation concentrate froth in coal slime flotation and fly ash flotation. The defoaming device provided by the invention for flotation concentrate froth from the flotation column is composed of a terminal screen group, a main screen group, a side screen group, a middle screen group and a spraying device. Each screen group is composed of 2-3 groups of stainless steel screens; and every two screens keep a distance of 4-6mm and have staggered screen cuts. The spraying device comprises an L-type stainless steel nozzle, a high pressure feeding pipe and an electric regulating valve. The invention has beneficial effects of high defoaming efficiency, thorough defoaming, simple structure, reduced investment and low operation cost; besides, the defoaming device completely solves troubles caused by bubbles in sequent processing and ensures normal operation of the system.
Description
Technical field
The utility model relates to a kind of defoaming device of flotation column flotation concentrate foam, is particularly useful for the defoaming device of flotation concentrate foam in coal slime flotation, the flyash flotation, belongs to the flotation technology field.
Background technology
Flotation column is widely used in coal slime flotation, flyash flotation, flotation pulp, air and medicament fully mix under the effect of microvesicle generators, after the mineralising, utilize the effect of bubble peace treaty agent to select concentrate, flotation concentrate carries a large amount of microvesicles and enters the concentrate feeder also from flowing in the concentrate collecting vessel; One of them changes when entering to wash the parameters such as raw ore amount, washing water consumption, the health water yield, the capital makes that the concentration of flotation pulp is instantaneous to change, when the about agent of flotation has little time to adjust, often can occur that flotation concentrate carries that a large amount of macrofoams enters the concentrate feeder and from flowing in the concentrate collecting vessel, these microvesicles and air pocket are difficult to broken voluntarily in the concentrate collecting vessel, part combines and becomes larger bubble, cause concentrate bucket bubble cumulative, even overflow, processing makes troubles to postorder: the pulp conveying pump easily produces cavitation, serious wear; The problems such as the filter press pan feeding time is long, and filter efficiency is low, and filter cake moisture is large.
Solution commonly used is at present: artificial froth breaking, mechanical agitation type froth breaking and defoamer froth breaking.
Artificial froth breaking: namely find that concentrate bucket foam is many even soon during overflow as the operation driver, above the concentrate bucket with a large amount of high pressure water washing foams.The deficiency that the method exists: 1) artificial froth breaking, labour intensity is large, and efficient is low; 2) reduced the concentration of flotation concentrate, the filter press pan feeding time is long, and efficient is low.
The mechanical agitation type froth breaking: namely increase motor, reductor, main shaft above the concentrate collecting vessel, it is sharp perpendicular to main shaft the horizontal froth breaking in several roads to be installed according to certain intervals below main shaft, by froth breaking bar High Rotation Speed and bubble hit, reaches the purpose of froth breaking.The deficiency that the method exists: 1) defoaming effectiveness is low, froth breaking is not thorough; 2) energy consumption and maintenance cost have been increased.
Defoamer froth breaking: the way froth breaking that namely in the concentrate collecting vessel, adds defoamer.The deficiency that the method exists: 1) the froth breaking expense is high; 2) defoamer itself is a kind of polluter, has increased the load of subsequent processing device.
Summary of the invention
The purpose of this utility model is to overcome the deficiencies in the prior art part, and a kind of defoaming device of flotation column flotation concentrate foam is provided.
The defoaming device of a kind of flotation column flotation concentrate foam described in the utility model, formed by terminal screen cloth group, main screen group, both sides screen cloth group, middle screen cloth group, spray equipment, it is characterized in that in conjunction with the existing design feature of flotation column concentrate feeder, each parts of defoaming device are fixed on the position of concentrate feeder medial surface, discharging opening top, reach the purpose of thorough froth breaking.
Described screen cloth group is to be assembled by 2～3 groups of stainless steel mesh, and the distance between the screen cloth is 4-6mm in twos, and the sieve of screen cloth seam is interlaced in twos; Described stainless steel mesh is by trapezoidal welding of stainless steel, bending, shaping, becomes the corrugated screen cloth, and its sieve seam width is 4mm～5mm; Trapezoidal (trapezoidal) top of described stainless steel width 1.6mm, following width is 2mm, highly is 3mm.
Described terminal screen cloth group, assembled by 2 groups of stainless steel mesh, its Main Function: in the time of froth breaking, reduce the flowing velocity of concentrate liquid, and stockpile a part of concentrate liquid in the bottom, wherein remaining bubble rises gradually, and with the concentrate liquid that descends, shower water collision, bubble breaking further reaches the order 1 of froth breaking.
Described main screen group, assembled by 3 groups of stainless steel mesh, its Main Function: concentrate slurry accelerates through inclined-plane, concentrate feeder bottom to slide to the main screen group down, and with the screen cloth collision of main screen group, a part of bubble breaking also stitches by sieve with concentrate liquid and to flow to terminal screen cloth group; Part bubble is adsorbed on main screen group side, through washing and dilution along the dirty shower water of main screen group, because bubble surface film tension failure makes bubble breaking.
Described both sides screen cloth group is assembled its Main Function by 2 groups of stainless steel mesh: the bubble that residue is not broken rises to both sides screen cloth group gradually, through the injection dilution of top shower water, further froth breaking.
Screen cloth group in the middle of described, assembled by 2 groups of stainless steel mesh, its Main Function: when gas concentrate foam is more, a part can rise to screen cloth group top, both sides than macrofoam, the meeting that has is crossed on the main screen group along entering above the middle screen cloth group, the direct bubble crushing of vaporific shower water of the nozzle ejection in spray equipment flow to terminal screen cloth group more certainly after middle screen cloth group froth breaking filters.
Described spray equipment is comprised of L-type stainless steel nozzle, high pressure feeding pipe, electric control valve.Described L-type stainless steel nozzle, be characterized in having unique absurd fantastic eddy flow cavity configuration, its large and unobstructed runner can reduce or eliminate choking phenomenon, can produce the conical hollow spray shapes, jeting area circularizes, 51 °～140 ° of spray angles, 2-4mm is adopted in its specified spray orifice aperture, and setting height(from bottom) is apart from both sides screen cloth group top 500mm; Described high pressure feeding pipe one end is connected with nozzle, and the other end is connected with the system high pressure fresh water pipeline, and hydraulic pressure adopts 0.15～0.25MPa; Described electric control valve is installed on the high pressure feeding pipe and at spray nozzle front end, Main Function: regulate shower water flow and pressure according to the froth breaking situation, saving water resource can field control, also can access centralized-control.
The beneficial effects of the utility model are: defoaming effectiveness is high, froth breaking is thorough; Use simple in structure, reduced investment, operating cost is low; Thoroughly solved the bubble trouble that processing brings to postorder, the system of assurance works well.
Description of drawings
Fig. 1 is the utility model defoaming device installation site front view;
Fig. 2 is the utility model defoaming device installation site top view;
Fig. 3 is the utility model defoaming device installation site A-A cutaway view;
Fig. 4 is the utility model defoaming device front view;
Among the figure: the terminal screen cloth group of 1-, 2-main screen group, 3-both sides screen cloth group, screen cloth group in the middle of the 4-, 5-spray equipment.
Fig. 5 is the utility model defoaming device top view;
Fig. 6 is the utility model defoaming device B-B cutaway view;
Fig. 7 is the utility model defoaming device front view I place enlarged drawing.
The specific embodiment
As shown in the figure: concentrate slurry slides to main screen group (2) under inclined-plane, concentrate feeder bottom accelerates, screen cloth collision with main screen group (2), part bubble breaking also flow to terminal screen cloth group (1) with concentrate liquid by sieve seam: a part of bubble is adsorbed on main screen group (2) side, through washing and dilution along the dirty shower water of main screen group (2), because bubble surface film tension failure face makes bubble breaking; The bubble that residue is not broken rises to both sides screen cloth groups (3) gradually, through the injection dilution of top shower water, further froth breaking.When the concentrate foam is more, a part can rise to both sides screen cloth groups (3) top than macrofoam, it is upper along entering above the middle screen cloth group (4) that main screen group (2) is crossed in the meeting that has, the direct bubble crushing of vaporific shower water of the nozzle ejection in spray equipment (5), after middle screen cloth group (4) froth breaking filters, filter from flowing to terminal screen cloth group (1) froth breaking again, flow at last discharging opening and discharge.
What certain coal preparation plant floatation system Central Plains debubbling method adopted is mechanical defoaming, and defoaming effect is bad, energy consumption and maintenance cost are higher.Adopt now above-mentioned defoaming device, wherein L-type stainless steel nozzle employing interface size is 1/4 inch (internal thread), specified spray orifice aperture 2mm, and when adopting the water under high pressure feed pressure to be 0.15MPa, nozzle flow is 1.1 liter/mins of clocks.Prove that through actual motion defoaming effectiveness is high, froth breaking is thorough; Every flotation column is 396 liters of water requirements per hour, saving water resource.
Certain flyash integrated treatment company adopts the charcoal in the XZWXJ30 flotation column flotation flyash, for guaranteeing that flotation tailing (low-carbon (LC) flyash loss on ignition≤5%) reaches the standard of first level flour coal ash, in the flotation raw ore, add more foaming agent and collecting agent, per hour the about 100m of flotation concentrate slurry
3, but the flotation concentrate foam is more and bubble ratio is harder, difficult broken bubble.Successively with artificial froth breaking, mechanical defoaming, effect is all bad.
Adopt now above-mentioned defoaming device, wherein the sieve of Stainless Steel screen cloth seam is 5mm, distance between the Stainless Steel screen cloth is 6mm in twos, L-type stainless steel nozzle employing interface size is 1/4 inch (internal thread) in addition, specified spray orifice aperture 2.4mm, when adopting the water under high pressure feed pressure to be 0.20MPa, nozzle flow is 1.9 liter/mins of clocks.Prove through actual motion, through the about 50m of concentrate slurry of each defoaming device
3/ h, and the about 342L/h of shower water, saving water resource, and defoaming effect is good.
Claims (7)
1. the defoaming device of a flotation column flotation concentrate foam is characterized in that: be comprised of terminal screen cloth group, main screen group, both sides screen cloth group, middle screen cloth group, spray equipment, each parts is fixed on the position of concentrate feeder medial surface, discharging opening top.
2. the defoaming device of a kind of flotation column flotation concentrate foam according to claim 1, it is characterized in that: described screen cloth group is to be assembled by 2～3 groups of stainless steel mesh, and the distance between the screen cloth is 4-6mm in twos, the sieve of screen cloth seam is interlaced in twos.
3. the defoaming device of a kind of flotation column flotation concentrate foam according to claim 1, it is characterized in that: described terminal screen cloth group is assembled by 2 groups of stainless steel mesh.
4. the defoaming device of a kind of flotation column flotation concentrate foam according to claim 1, it is characterized in that: described main screen group is assembled by 3 groups of stainless steel mesh.
5. the defoaming device of a kind of flotation column flotation concentrate foam according to claim 1, it is characterized in that: described both sides screen cloth group is assembled by 2 groups of stainless steel mesh.
6. the defoaming device of a kind of flotation column flotation concentrate foam according to claim 1 is characterized in that: screen cloth group in the middle of described is assembled by 2 groups of stainless steel mesh.
7. the defoaming device of a kind of flotation column flotation concentrate foam according to claim 1, it is characterized in that: described spray equipment is comprised of L-type stainless steel nozzle, high pressure feeding pipe, electric control valve; Described L-type stainless steel nozzle setting height(from bottom) is apart from both sides screen cloth group top 500mm; Described high pressure feeding pipe one end is connected with nozzle, and the other end is connected with the system high pressure fresh water pipeline, and hydraulic pressure adopts 0.15～0.25MPa; Described electric control valve is installed on the high pressure feeding pipe and at spray nozzle front end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220410582 CN202724765U (en) | 2012-08-11 | 2012-08-11 | Defoaming device for flotation concentrate froth from flotation column |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220410582 CN202724765U (en) | 2012-08-11 | 2012-08-11 | Defoaming device for flotation concentrate froth from flotation column |
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| Publication Number | Publication Date |
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| CN202724765U true CN202724765U (en) | 2013-02-13 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 201220410582 Expired - Fee Related CN202724765U (en) | 2012-08-11 | 2012-08-11 | Defoaming device for flotation concentrate froth from flotation column |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102814060A (en) * | 2012-08-11 | 2012-12-12 | 山东莱芜煤矿机械有限公司 | Defoaming device for flotation concentrate froth from flotation column |
| CN105080729A (en) * | 2015-09-14 | 2015-11-25 | 中南大学 | Method for saving washing water of flotation machine foam tank and device for implementing method |
| CN108815887A (en) * | 2018-04-23 | 2018-11-16 | 北京矿冶科技集团有限公司 | A kind of floatation equipment defoaming device |
-
2012
- 2012-08-11 CN CN 201220410582 patent/CN202724765U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102814060A (en) * | 2012-08-11 | 2012-12-12 | 山东莱芜煤矿机械有限公司 | Defoaming device for flotation concentrate froth from flotation column |
| CN105080729A (en) * | 2015-09-14 | 2015-11-25 | 中南大学 | Method for saving washing water of flotation machine foam tank and device for implementing method |
| CN108815887A (en) * | 2018-04-23 | 2018-11-16 | 北京矿冶科技集团有限公司 | A kind of floatation equipment defoaming device |
| CN108815887B (en) * | 2018-04-23 | 2021-07-13 | 北京矿冶科技集团有限公司 | Defoaming device for flotation equipment |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130213 Termination date: 20150811 |
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| EXPY | Termination of patent right or utility model |