CN110961256A - Ore pulp fire fighting equipment - Google Patents
Ore pulp fire fighting equipment Download PDFInfo
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- CN110961256A CN110961256A CN201911173931.0A CN201911173931A CN110961256A CN 110961256 A CN110961256 A CN 110961256A CN 201911173931 A CN201911173931 A CN 201911173931A CN 110961256 A CN110961256 A CN 110961256A
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- defoaming
- central shaft
- spiral
- ore pulp
- foam
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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
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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
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Abstract
The invention discloses a method and a device for defoaming ore pulp. The invention is suitable for most defoaming technical fields of mining industry, chemical industry and the like, and is mainly used for defoaming and conveying ore pulp of mineralized foam products in a flotation process. Compared with the traditional defoaming device and the traditional defoaming method, the largest innovation point of the defoaming device is that the physical mode is utilized, the impact force defoaming of defoaming and gas-water mixture is carried out under the action of shearing through extrusion, the water consumption can be reduced, the use of chemical agents is avoided, the good environmental protection effect is achieved, the ore pulp is uniformly mixed, the ore pulp index is stable, the defoaming effect is good, the flow conductivity is good, and the workload of subsequent operation is reduced.
Description
Technical Field
The invention relates to most of defoaming technical fields in mining industry, chemical industry and the like, in particular to the technical field of defoaming of mineralized foam products of flotation pulp.
Background
Along with the increasing exhaustion of rich ore and mineral separation resources, refractory ores such as 'poor ore, fine ore, miscellaneous ore' and the like become main mineral resources, and flotation is one of the most widely applied sorting methods in the field of mineral separation. Mineral flotation needs to be completed at a solid-liquid-gas three-phase interface, and due to the addition of flotation reagents such as amine collectors and excessive foaming agents, hyperstable mineralized foams generated in the flotation process have the characteristics of high viscosity, poor fluidity, good stability and the like, so that the phenomena of difficult defoaming of foam products, groove turning, pipeline blockage and the like are caused, and the post-treatment process and flotation indexes of the flotation products are seriously influenced. During the pumping process of the flotation product, the foam can cause cavitation of the pump and influence the service life of the pump; in the dewatering process following flotation, froth reduces the efficiency of product dewatering. Therefore, the elimination of froth in the flotation process is very important to stabilize the flotation product index. The traditional defoaming method mainly adopts high-pressure washing water for spraying, namely, a high-pressure water gun or a water pipe is used for washing at the initial end of a foam tank. The traditional high-pressure water washing defoaming method has a certain effect on foam elimination, but has large water consumption, cannot effectively realize quick defoaming and stable ore pulp conveying of foam products, has serious groove leakage phenomenon of the foam products, has large product loss and unstable downstream ore pulp concentration, influences the stability of flotation indexes, increases the difficulty of subsequent dehydration operation, and needs to regulate and control the water quantity according to the foam state. The chemical agent defoaming method can increase the production cost, has the risk of environmental pollution, and can damage the subsequent flotation conditions and influence the subsequent flotation indexes.
At present, the research and development of mechanical defoaming devices are more. Common mechanical defoaming modes mainly include foam pump shearing defoaming, venturi principle jet defoaming, multi-section jet defoaming, high-pressure spray defoaming and the like. Utilize high-pressure atomizer to carry out the defoaming, can solve the big problem of traditional water consumption, but the impact force of high-pressure water smoke can not run through longer production line, need install a plurality of high-pressure nozzle, overhauls inconveniently, and high-pressure nozzle department water smoke area is little simultaneously, may cause the defoaming effect inhomogeneous. Therefore, water conservation and defoaming are still important problems to be solved in the flotation link.
Aiming at the characteristics of flotation foam products, the invention designs a spiral conveying ore pulp, spiral shearing foam and a hollow shaft air-water jet flow mixture into a whole by applying a shearing principle, a disturbing property and an extrusion mode, realizes the high-efficiency conveying of the ore pulp in a foam product groove and the quick breaking and elimination of foam, realizes the medicine-free defoaming of the foam products, effectively reduces the flushing water quantity of a flotation workshop, uniformly stirs the ore pulp and changes fluid from laminar flow to a turbulent flow mode, and simultaneously ensures that the concentration of downstream ore pulp is stable, thereby having great significance for improving the economic benefit of a concentrating mill and realizing energy conservation and emission reduction.
Disclosure of Invention
The invention aims to solve the technical problem of providing an ore pulp defoaming device, which not only maintains the main advantages of the traditional defoaming device, but also can overcome the defects of easy blockage, difficult defoaming, unstable product index, large water consumption and the like.
The invention is realized by the following steps: the ore pulp defoaming device comprises a foam groove device, a spiral device, a fixing device, a gas-water mixing device, a motor and a speed change mechanism;
the foam tank body device comprises a circular groove and two inclined baffles, wherein an 3/4 opening is reserved in the circular groove, and the included angle between the two inclined baffles is not more than 120 degrees;
the spiral device consists of a central shaft, spiral blades and defoaming brushes, wherein the central shaft is a hollow shaft, the spiral blades are arranged on the central shaft, and the defoaming brushes are arranged on the spiral blades; the central shaft is provided with holes communicated with the inner cavity, and the holes are positioned among the intervals of the helical blades;
the spiral device main body is positioned in the foam groove body device, a central shaft of the spiral device is connected with the foam groove body device through a fixing device, one end of the central shaft of the spiral device is positioned outside the foam groove body device, and the air-water mixing device is connected with the spiral device through a sealing bearing and is communicated with an inner cavity of the central shaft of the spiral device; the motor is connected with a central shaft outside the foam tank body device through a speed change mechanism.
The fixing device comprises a solid fixing plate and a T-shaped fixing plate which are respectively arranged at two ends of the circular groove, and two ends of a central shaft of the spiral device are respectively fixed through the solid fixing plate and the T-shaped fixing plate.
The pitch of the helical blade is 50-200 mm, and the inclination angle of the helical blade is not more than 30 degrees.
The gas-water mixing device is composed of an air pump, a water pump, a reservoir and a gas storage chamber, the air pump and the water pump are respectively connected with the gas storage chamber and the reservoir, the output ends of the air pump and the water pump are connected to a mixing pipeline, and the mixing pipeline is communicated with the central shaft.
Due to the adoption of the technical scheme, compared with the prior art, the foam tank body structure is improved and optimized, the spiral device is additionally arranged in the foam tank body, the jet flow generated by the gas-water mixture on the spiral device replaces the traditional water flow mode, and the flow rate and the gas-water mixing ratio can be changed by adjusting the valve. The device can be freely adjusted to match continuous defoaming of mineralized foams with different properties and realize continuous conveying of ore pulp, and has the advantages of convenience in adjustment, multiple purposes, simplicity in operation, wide adaptability and the like. The pulp defoaming device has the following properties:
(1) shearing and extruding the ore pulp in the rotating process of the spiral blade and the defoaming brush on the spiral blade; the water jet from the small hole on the central shaft produces impact effect on the slurry. The combination of multiple defoaming modes improves the defoaming effect.
(2) Through the water-gas mixing mode and can adjust the flow and the mixing proportion, the water consumption can be effectively reduced, the excessive dilution of ore pulp is avoided, and the subsequent operation amount is reduced.
(3) The pressure difference generated by the helical blades in the rotating process changes the pulp from laminar flow state to turbulent flow state, and the uniform mixing of the pulp and the stability of the pulp concentration can be realized.
(4) The spiral blade can effectively improve the sedimentation and blockage of ore pulp under the flow guiding effect generated in the rotating process.
(5) The processing capacity of the ore pulp defoaming device is changed by controlling the power of the rotating device, so that the defoaming device can adapt to defoaming operation with different processing capacities; the valve of the gas-water mixture is adjusted to change the mixing proportion and the flow rate of the jet water flow, so that foams with different properties can be matched.
(6) The invention adopts a physical defoaming mode, effectively avoids the use of a chemical defoaming agent (such as a polyether defoaming agent), and has good environmental protection effect.
(7) The invention has the advantages of easy operation, stable performance, good applicability, safety, reliability, economy, reasonableness and popularization value.
The invention is suitable for most defoaming technical fields of mining industry, chemical industry and the like, and is mainly used for defoaming and conveying ore pulp of mineralized foam products in a flotation process. Compared with the traditional defoaming device and the traditional defoaming method, the largest innovation point of the defoaming device is that the physical mode is utilized, the impact force defoaming of defoaming and gas-water mixture is carried out under the action of shearing through extrusion, the water consumption can be reduced, the use of chemical agents is avoided, the good environmental protection effect is achieved, the ore pulp is uniformly mixed, the ore pulp index is stable, the defoaming effect is good, the flow conductivity is good, and the workload of subsequent operation is reduced.
Drawings
FIG. 1 is a schematic top view of the structure of the present invention;
FIG. 2 is a front view of the present invention in a schematic configuration;
FIG. 3 is a schematic cross-sectional view of the present invention;
FIG. 4 is a schematic structural view of the fixing device of the present invention;
fig. 5 is a schematic diagram of the application of the present invention.
Detailed Description
The embodiment of the invention comprises the following steps: the ore pulp defoaming device comprises a foam tank device 1, a spiral device 2, a fixing device 3, a gas-water mixing device 4, a motor 5 and a speed change mechanism 7;
the foam tank body device 1 comprises a circular tank 1-1 and two inclined baffles 1-2, wherein an 3/4 opening is reserved in the circular tank 1-1, and the included angle between the two inclined baffles 1-2 is not more than 120 degrees;
the spiral device 2 consists of a central shaft 2-1 and spiral blades 2-2 grade defoaming brushes 2-3, wherein the central shaft 2-1 is a hollow shaft, the spiral blades 2-2 are arranged on the central shaft 2-1, and the defoaming brushes 2-3 are arranged on the spiral blades 2-2; a hole 2-4 communicated with the inner cavity is formed in the central shaft 2-1, and the hole 2-4 is positioned between the intervals of the helical blades 2-2;
the main body of the spiral device 2 is positioned in the foam groove body device 1, a central shaft 2-1 of the spiral device 2 is connected with the foam groove body device 1 through a fixing device 3, one end of the central shaft 2-1 of the spiral device 2 is positioned outside the foam groove body device 1, and the air-water mixing device 4 is connected with the spiral device 2 through a sealing bearing 6 and is communicated with an inner cavity of the central shaft 2-1 of the spiral device 2; the motor 5 is connected with a central shaft 2-1 outside the foam tank body device 1 through a speed change mechanism 7.
The fixing device 3 comprises a solid fixing plate 3-1 and a T-shaped fixing plate 3-2 which are respectively arranged at two ends of the circular groove 1-1, and two ends of a central shaft 2-1 of the spiral device 2 are respectively fixed through the solid fixing plate 3-1 and the T-shaped fixing plate 3-2.
The pitch of the helical blade 2-2 is 50-200 mm, and the inclination angle of the helical blade 2-2 is not more than 30 degrees.
The gas-water mixing device 4 consists of an air pump, a water pump, a reservoir and a gas storage chamber, the air pump and the water pump are respectively connected with the gas storage chamber and the reservoir, the output ends of the air pump and the water pump are connected to a mixing pipeline, and the mixing pipeline is communicated with the central shaft 2-1.
When the ore pulp defoaming device works, ore pulp foam is scraped into the foam tank device 1 from a flotation machine through a scraper, flows to the spiral device 2 along an inclined baffle 1-2 at the upper part of the foam tank device 1, an air pump and a water pump of the air-water mixing device 4 are utilized to obtain an air-water mixture from an air storage chamber and a water storage chamber, the flow and the mixing ratio of the air-water mixture are controlled through an adjusting valve, the spiral blade 2-2 is welded on a central shaft, a series of small holes 2-4 with inclination angles are formed in the central shaft 2-1, and the foam tank device 1 is connected with the central shaft 2-1 through a sealing bearing 6. The air-water mixture that lets in center pin 2-1 spouts from epaxial aperture 2-4, thereby produces the impact to the ore pulp foam and carries out the defoaming, and helical blade 2-2 is along with hollow shaft 2-1 when rotating, and the blade produces extrusion and shearing action to the ore pulp foam simultaneously, makes the ore pulp foam break, reaches the defoaming purpose. Defoaming brushes 2-3 are arranged on the helical blades 2-2, and generate extrusion and shearing actions on ore pulp foam in the rotating process, so that the ore pulp can be uniformly mixed while further defoaming. The spiral blade 2-2 generates pressure difference in the rotating process, so that foam rushes to the spiral device 2, and the ore pulp foam can be defoamed. The spiral blades 2-2 rotate and play a role in guiding flow, and the ore pulp foam can effectively solve the problem of ore pulp blockage and realize quick ore pulp conveying under the condition that the foam groove body device 1 with a certain inclination angle depends on self gravity and under the help of water flow. The invention has better defoaming effect, the obtained ore pulp product has stable concentration, the subsequent operation load is reduced, and the production efficiency is increased.
When the ore pulp defoaming device is used for defoaming, the processing capacity of the rotating speed changing device of the variable frequency motor can be adjusted, and the flow rate and the proportion of the gas-water mixture can be adjusted by adjusting the valve, so that the ore pulp defoaming device is suitable for flotation machines with different processing capacities and ore pulp foams with different properties. This ore pulp fire fighting equipment adopts air water mixture to strike the defoaming, and mechanical extrusion and shearing defoaming mode have reduced the water consumption of defoaming in-process, avoid ore pulp concentration excessive dilution simultaneously, reduce follow-up work load, improve production efficiency, solve the most problems such as ore pulp concentration index is not up to standard in traditional fire fighting equipment and the method effectively. The invention can effectively avoid the use of chemical defoaming agents, has feasible economic benefit, and is environment-friendly and energy-saving.
When the ore pulp defoaming device works, ore pulp is scraped into the foam groove by the scraper, an air-water mixture is ejected from holes 2-4 on the central shaft 2-1 to impact foam for defoaming, the rotating spiral blades 2-2 and the defoaming brushes 2-3 extrude and shear the foam to break the foam, the foam is further defoamed, the ore pulp is stirred, the ore pulp is uniformly mixed and uniform in concentration, the ore pulp defoaming device plays a role in guiding in the rotating process, the ore pulp transportation is accelerated, the problem of blockage is effectively solved, and the ore pulp flows to the next process from the tail end.
Claims (4)
1. An ore pulp defoaming device is characterized by comprising a foam tank body device (1), a spiral device (2), a fixing device (3), an air-water mixing device (4), a motor (5) and a speed change mechanism (7);
the foam tank body device (1) comprises a circular tank (1-1) and two inclined baffles (1-2), wherein an 3/4 opening is reserved at the top of the circular tank (1-1), the two inclined baffles (1-2) are arranged on two sides of the opening at the top of the circular tank (1-1), and an included angle between the two inclined baffles (1-2) is not more than 120 degrees;
the spiral device (2) consists of a central shaft (2-1), spiral blades (2-2) and defoaming brushes (2-3), wherein the central shaft (2-1) is a hollow shaft, the spiral blades (2-2) are arranged on the central shaft (2-1), and the defoaming brushes (2-3) are arranged on the spiral blades (2-2); holes (2-4) communicated with the inner cavity are formed in the central shaft (2-1), and the holes (2-4) are positioned among the intervals of the helical blades (2-2);
the main body of the spiral device (2) is positioned in the foam groove body device (1), a central shaft (2-1) of the spiral device (2) is connected with the foam groove body device (1) through a fixing device (3), one end of the central shaft (2-1) of the spiral device (2) is positioned outside the foam groove body device (1), and the air-water mixing device (4) is connected with the spiral device (2) through a sealing bearing (6) and is communicated with the inner cavity of the central shaft (2-1) of the spiral device (2); the motor (5) is connected with a central shaft (2-1) outside the foam tank body device (1) through a speed change mechanism (7).
2. The pulp defoaming apparatus of claim 1, characterized in that: the fixing device (3) comprises a solid fixing plate (3-1) and a T-shaped fixing plate (3-2) which are respectively arranged at two ends of the circular groove (1-1), and two ends of a central shaft (2-1) of the spiral device (2) are respectively fixed through the solid fixing plate (3-1) and the T-shaped fixing plate (3-2).
3. The pulp defoaming apparatus of claim 1, characterized in that: the pitch of the helical blade (2-2) is 50-200 mm, and the inclination angle of the helical blade (2-2) is not more than 30 degrees.
4. The pulp defoaming apparatus of claim 1, characterized in that: the gas-water mixing device (4) consists of an air pump, a water pump, a reservoir and a gas storage chamber, the air pump and the water pump are respectively connected with the gas storage chamber and the reservoir, the output ends of the air pump and the water pump are connected to a mixing pipeline, and the mixing pipeline is communicated with the central shaft (2-1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911173931.0A CN110961256A (en) | 2019-11-26 | 2019-11-26 | Ore pulp fire fighting equipment |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911173931.0A CN110961256A (en) | 2019-11-26 | 2019-11-26 | Ore pulp fire fighting equipment |
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| CN110961256A true CN110961256A (en) | 2020-04-07 |
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| CN201911173931.0A Pending CN110961256A (en) | 2019-11-26 | 2019-11-26 | Ore pulp fire fighting equipment |
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| CN (1) | CN110961256A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111570080A (en) * | 2020-07-02 | 2020-08-25 | 长沙有色冶金设计研究院有限公司 | Spodumene beneficiation process |
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| JP4530574B2 (en) * | 2001-03-28 | 2010-08-25 | 株式会社Ｉｈｉ機械システム | Floss processing equipment |
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| CN205550587U (en) * | 2016-02-03 | 2016-09-07 | 长沙有色冶金设计研究院有限公司 | Mining fire fighting equipment of flotation |
| CN107557268A (en) * | 2017-09-06 | 2018-01-09 | 苏州富园生物科技有限公司 | A kind of defoaming device |
| CN208933068U (en) * | 2018-09-11 | 2019-06-04 | 嘉兴市天伦纳米染整有限公司 | A kind of high-efficiency sewage processing aeration tank |
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2019
- 2019-11-26 CN CN201911173931.0A patent/CN110961256A/en active Pending
Patent Citations (7)
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| JP4530574B2 (en) * | 2001-03-28 | 2010-08-25 | 株式会社Ｉｈｉ機械システム | Floss processing equipment |
| CN204448296U (en) * | 2014-12-12 | 2015-07-08 | 平顶山华兴浮选工程技术服务有限公司 | A kind of ore pulp defoaming device for floatation ore dressing |
| CN104874207A (en) * | 2015-06-02 | 2015-09-02 | 中冶南方工程技术有限公司 | Jet-stream defoaming device |
| CN205550587U (en) * | 2016-02-03 | 2016-09-07 | 长沙有色冶金设计研究院有限公司 | Mining fire fighting equipment of flotation |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111570080A (en) * | 2020-07-02 | 2020-08-25 | 长沙有色冶金设计研究院有限公司 | Spodumene beneficiation process |
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