CN108480057B - flotation pulp preprocessing device - Google Patents
flotation pulp preprocessing device Download PDFInfo
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- CN108480057B CN108480057B CN201810413618.9A CN201810413618A CN108480057B CN 108480057 B CN108480057 B CN 108480057B CN 201810413618 A CN201810413618 A CN 201810413618A CN 108480057 B CN108480057 B CN 108480057B
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- China
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- ore pulp
- barrel
- shaft sleeve
- stirring shaft
- stirring
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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
Abstract
The invention discloses a flotation pulp pretreatment device, which is characterized in that: the novel ore pulp mixing device comprises an ore pulp barrel with an ore pulp underflow port (12) arranged at the bottom, a mixing blade (8) and a mixing shaft sleeve (5) which are arranged in the ore pulp barrel in a coaxial mode with the ore pulp barrel from bottom to top, a mixing dosing pipe (9) which extends out of the ore pulp barrel and is used for adding medicaments into the mixing shaft sleeve is arranged on the mixing shaft sleeve (5), an ore pulp overflow groove (10) and an ore pulp discharge port (11) are arranged on the upper side of the ore pulp barrel, a ring pipe (2) with an ore pulp feeding port (1), an emulsifying dosing port (3) and a plurality of shunt pipes (4) is arranged around the outer wall of the ore pulp barrel, and nozzles connected with outlets of the shunt pipes (4) extend into the ore pulp barrel in a tangential direction respectively. The advantages are that: the consumption of the medicament is reduced, the adsorption effect of medicament molecules and mineral particles is improved, and inevitable ions in flotation are reduced; the equipment is small in size, simple in structure and convenient to maintain.
Description
Technical Field
The invention belongs to the technical field of mineral flotation mechanical equipment, and particularly relates to a flotation pulp pretreatment device.
Background
Flotation is one of the most main methods for mineral separation, and the pulp mixing process is a precondition for realizing high-efficiency flotation of minerals. In the traditional ore pulp preparation process, the ore pulp is mixed and stirred in a mixing barrel device to fully disperse mineral particles, so that the ore pulp is conveniently conveyed; realizing the dispersion of medicament molecules and the adsorption on the surface of mineral particles; adjusting the flotation concentration and the like. The collecting agent and the inhibitor can be adsorbed on the surface of the solid particles through different adsorption effects through the pulp conditioning effect, and the rest of the regulator and the foaming agent are fully mixed with the pulp liquid. However, most flotation agents are macromolecular organics and have poor solubility and dispersibility. In production practice, simple size mixing and stirring often cause that medicament molecules cannot be fully adsorbed on the surfaces of mineral particles, so that a large amount of medicament is wasted, inevitable ions are increased, the chemical of a flotation solution is deteriorated, and the flotation efficiency is reduced. Therefore, the quality of size mixing and dosing plays a crucial role in flotation separation, and the efficient ore pulp pretreatment device is one of the most effective means for improving the flotation separation effect and reducing the consumption of chemicals.
disclosure of Invention
The invention aims to provide an efficient flotation pulp pretreatment device based on the gradient enhanced adsorption action aiming at the defects of large consumption of flotation reagents, low flotation efficiency, complex separation process, higher cost, large environmental protection pressure and the like caused by insufficient size mixing and stirring in the prior art. The invention improves the adsorption effect of medicament molecules and mineral particles and improves the flotation efficiency by the cascade enhanced adsorption action of jet flow, low-speed mixing and W-shaped flow, and has small equipment volume, simple structure and convenient maintenance.
The purpose of the invention can be realized by the following technical scheme:
The flotation pulp pretreatment device comprises a pulp barrel, a stirring blade and a stirring shaft sleeve, wherein the bottom of the pulp barrel is provided with a pulp bottom flow port, the stirring blade and the stirring shaft sleeve are arranged in the pulp barrel from bottom to top in a mode of being coaxial with the pulp barrel, the stirring shaft sleeve is provided with a stirring chemical adding pipe which extends out of the pulp barrel and is used for adding a chemical into the stirring shaft sleeve, the lateral upper part of the pulp barrel is provided with a pulp overflow groove and a pulp discharge port, the outer wall of the pulp barrel is surrounded with an annular pipe with a pulp feeding port, an emulsifying chemical adding port and a plurality of shunt pipes, and nozzles connected with the outlets of the shunt pipes extend into the pulp barrel in a tangential direction respectively.
The stirring shaft sleeve is suspended below an upper cover body of the slurry barrel, and a plurality of circular through holes are uniformly distributed on the stirring shaft sleeve; the stirring blades are combined with a motor driving system arranged at the top of the slurry barrel through a stirring shaft which is arranged in the stirring shaft sleeve in a penetrating manner and vertically extends upwards, and the stirring blades are arranged below the stirring shaft sleeve in a suspension manner.
The cross section of the annular pipe is of a square structure, and six shunt pipes are uniformly distributed around the annular pipe; the bottom of the slurry barrel is a 45-degree cone, the bottom of the slurry barrel is provided with an overhauling bottom flow control valve, and the barrel body is fixedly arranged on the rack through a connecting piece.
The tangential entering direction of the nozzle connected with the outlet of the flow dividing pipe is opposite to the rotating direction of the stirring blade, the high-speed jet flow generated by the nozzle generates negative pressure suction effect between the stirring blade and the sleeve, and the two flows form W-shaped flow in the opposite direction, so that the secondary mixing of the ore pulp is increased.
according to the invention, the feeding port and the annular pipe are horizontally fixed at a position 600mm below the slurry barrel of the pretreatment device, and the annular pipe is 50mm away from the barrel body, so that the nozzle of the flow dividing pipe can enter and exit the barrel body tangentially, and the overhauling and replacement can be realized.
The working principle and the beneficial effects of the invention are as follows:
The raw ore pulp enters the annular pipe through the ore pulp feeding port, the first type of flotation agents (such as regulators and collectors, or insoluble and difficultly-dispersed agents) also enter the annular pipe through the emulsifying and chemical adding port, and the first type of flotation agents and the ore pulp are primarily mixed in the annular pipe. The primarily mixed ore pulp enters an ore pulp barrel tangentially by high-speed jet flow from nozzles of 6 shunt tubes, in the process, the first class of medicaments are dispersed into an emulsified state, and medicament molecules are adsorbed on the surface of minerals under the action of high turbulence (the emulsification of insoluble medicaments is realized by the action of the high-speed jet flow of the medicaments and the ore pulp, and the insoluble medicaments are efficiently attached to the surface of mineral particles). Meanwhile, a second type of medicament (such as a foaming agent, an easily-soluble dispersing medicament and the like) is added into the stirring shaft sleeve through the stirring medicament adding pipe, the stirring shaft is driven by the motor driving system to realize the mixing and adsorption of the second type of medicament and the ore pulp at the rotating speed of 300r/min, the ore pulp is in a suspension state, and after full dissociation, the granularity and the concentration of the raw ore pulp meet the flotation requirements. The pretreated ore pulp flows out of the ore pulp discharge hole through the overflow groove. The ore pulp underflow opening is arranged at the bottom of the ore pulp barrel for discharging and stopping for overhaul.
In foretell high-efficient flotation pulp preprocessing device, the pulp that adsorbs after the high-speed efflux emulsification and particle surface passes through the stirring shaft sleeve, motor drive stirring vane realizes the suspension of pulp to form "W" type flow in the staving, the high-soluble second class medicament that disperses adds 75cm high departments in the stirring shaft sleeve through stirring dosing pipe, realizes the mixing, adsorbs and the suspension of second class medicament under the low turbulent action.
In conclusion, the invention has the advantages that: the consumption of the medicament is reduced, the adsorption effect of medicament molecules and mineral particles is improved, and inevitable ions in flotation are reduced; the equipment is small in size, simple in structure and convenient to maintain.
Drawings
Fig. 1 is a schematic view of the overall structure of the present invention.
Fig. 2 is a schematic cross-sectional view of fig. 1.
Fig. 3 is a schematic diagram of a shunt tube configuration.
Detailed Description
The invention will be further described with reference to the following examples (drawings):
As shown in fig. 1 and 2, the flotation pulp pretreatment device of the invention comprises a pulp barrel with a pulp underflow port 12 at the bottom, a stirring blade 8 and a stirring shaft sleeve 5 which are arranged in the pulp barrel from bottom to top in a coaxial manner with the pulp barrel, wherein a stirring chemical adding pipe 9 which extends out of the pulp barrel and is used for adding a chemical into the stirring shaft sleeve is arranged on the stirring shaft sleeve 5, the stirring shaft sleeve 5 is suspended below an upper cover body of the pulp barrel, and a plurality of circular through holes are uniformly distributed on the stirring shaft sleeve 5; the stirring blades 8 are combined with a motor driving system 6 arranged at the top of the slurry barrel through a stirring shaft 7 which is arranged in the stirring shaft sleeve 5 in a penetrating way and vertically extends upwards, and are arranged below the stirring shaft sleeve 5 in a suspension way; an ore pulp overflow groove 10 and an ore pulp discharge hole 11 are arranged at the side upper part of the ore pulp barrel, an annular pipe 2 with an ore pulp feed inlet 1, an emulsifying dosing port 3 and six flow dividing pipes 4 is arranged around the outer wall of the ore pulp barrel, and nozzles connected with outlets of the flow dividing pipes 4 respectively extend into the ore pulp barrel in a tangential direction; the cross section of the annular pipe 2 is of a square structure, and six shunt pipes 4 are uniformly distributed around the annular pipe 2; the bottom of the slurry barrel is a 45-degree cone, the bottom of the slurry barrel is provided with an overhauling bottom flow control valve, and the barrel body is fixedly arranged on the rack through a connecting piece.
The structure of the shunt 4 is shown in fig. 3.
The tangential entering direction of the nozzle connected with the outlet of the shunt pipe 4 is opposite to the rotating direction of the stirring blade 8, the stirring blade 8 and the sleeve 5 generate negative pressure suction effect by high-speed jet flow generated by the nozzle, and the two flows form W-shaped flow in the opposite direction, so that the secondary mixing of ore pulp is increased.
According to the invention, the feeding port 1 and the annular pipe 2 are horizontally fixed at a position 600mm below the slurry barrel of the pretreatment device, and the annular pipe is 50mm away from the barrel body, so that a nozzle of the flow dividing pipe can enter and exit the barrel body tangentially, and the overhauling and replacement can be realized.
The motor driving system 6 drives the stirring shaft 7 to realize the mixed adsorption of the second medicament and the ore pulp at the rotating speed of 300r/min, and the ore pulp is in a suspension state. The feeding port 1 is connected with a material conveying pipeline through a nominal diameter DN80 flange, and the side length of the cross section of the annular pipe is a square of 80 mm. The nominal diameter DN25 of the shunt tube is 15mm, the inner diameter of the nozzle opening is 15mm, and the nozzles of the shunt tube 4 respectively extend into the slurry barrel by 20mm in a tangential direction.
The reference diameter of the cylinder body of the ore pulp pretreatment device is 1000mm, the height of the cylinder body is 1280mm, a stirring shaft sleeve 5 with the diameter of 450mm is fixed in the ore pulp barrel through a cantilever, 100mm circular holes are uniformly distributed on the sleeve, the hole opening rate is 38%, and a stirring chemical feeding pipe 9 with the length of 700mm and the diameter of 25mm is fixed along the sleeve.
The invention adopts a 3kw motor to drive a stirring shaft 7 with the length of 1000mm to drive a three-blade impeller to rotate at the rotating speed of 300r/min through the speed reduction of a belt pulley. The rotation speed enables the second type of medicament to be easily dispersed, and the subsequent acting medicament and the ore pulp realize low-speed mixed adsorption.
in the invention, the jet flow generated by the nozzle of the shunt pipe 4, the stirring shaft sleeve 5, the stirring shaft 7 and the low-speed stirring system generated by the stirring blades 8 form secondary mixing action of W-shaped flow, and respectively form step enhanced adsorption action on medicaments with difficult to easy solubility and in sequence from front to back.
The invention is mainly characterized in that:
(1) The insoluble and indissoluble medicament which is mixed preliminarily and the ore pulp are emulsified through high-speed jet flow, so that high-efficiency adsorption is realized.
(2) The soluble and dispersible medicament realizes low-turbulence mixed adsorption, and realizes ore pulp suspension through bottom W-shaped flow.
(3) The reagents with different adsorption difficulty degrees realize high-efficiency flotation pulp pretreatment in a step strengthening mode.
Claims (2)
1. A flotation pulp preprocessing device which characterized in that: the device comprises an ore pulp barrel, a stirring blade (8) and a stirring shaft sleeve (5), wherein the bottom of the ore pulp barrel is provided with an ore pulp bottom flow port (12), the stirring blade (8) and the stirring shaft sleeve (5) are arranged in the ore pulp barrel from bottom to top in a mode of being coaxial with the ore pulp barrel, a stirring chemical adding pipe (9) which extends out of the ore pulp barrel and is used for adding a chemical into the stirring shaft sleeve is arranged on the stirring shaft sleeve (5), an ore pulp overflow groove (10) and an ore pulp discharge port (11) are arranged at the lateral upper part of the ore pulp barrel, an annular pipe (2) with an ore pulp feeding port (1), an emulsifying chemical adding port (3) and a plurality of shunt pipes (4) is arranged around the outer wall of the ore pulp barrel, and nozzles connected with; the stirring shaft sleeve (5) is suspended below the upper cover body of the slurry barrel, and a plurality of circular through holes are uniformly distributed on the stirring shaft sleeve (5); the stirring blades (8) are combined with a motor driving system (6) arranged at the top of the slurry barrel through a stirring shaft (7) which is arranged in the stirring shaft sleeve (5) in a penetrating way and vertically extends upwards, and are arranged below the stirring shaft sleeve (5) in a suspension way; the cross section of the annular pipe (2) is of a square structure, and six shunt pipes (4) are uniformly distributed around the annular pipe (2); the tangential entering direction of the nozzle connected with the outlet of the shunt pipe (4) is opposite to the rotating direction of the stirring blade (8), and the high-speed jet flow generated by the nozzle, the stirring blade and the fluid generated by the sleeve under the negative pressure suction effect jointly form W-shaped flow in the opposite direction, so that the secondary mixing of the ore pulp is increased.
2. The flotation pulp pretreatment device according to claim 1, characterized in that: the bottom of the slurry barrel is a 45-degree cone, the bottom of the slurry barrel is provided with an overhauling bottom flow control valve, and the barrel body is fixedly arranged on the rack through a connecting piece.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810413618.9A CN108480057B (en) | 2018-05-03 | 2018-05-03 | flotation pulp preprocessing device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810413618.9A CN108480057B (en) | 2018-05-03 | 2018-05-03 | flotation pulp preprocessing device |
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| Publication Number | Publication Date |
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| CN108480057A CN108480057A (en) | 2018-09-04 |
| CN108480057B true CN108480057B (en) | 2019-12-13 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201810413618.9A Active CN108480057B (en) | 2018-05-03 | 2018-05-03 | flotation pulp preprocessing device |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112934482B (en) * | 2021-03-16 | 2022-12-23 | 中国恩菲工程技术有限公司 | Flotation method and flotation device |
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|---|---|---|---|---|
| US5431286A (en) * | 1994-01-06 | 1995-07-11 | Inco Limited | Recirculating column flotation apparatus |
| CN1324270A (en) * | 1998-11-04 | 2001-11-28 | 通用信号公司 | Mixing system for separation of materials by flotation |
| CN201244464Y (en) * | 2008-07-22 | 2009-05-27 | 江西稀有稀土金属钨业集团有限公司 | Agitated tank |
| CN102458626A (en) * | 2009-04-29 | 2012-05-16 | Amt国际有限公司 | Vapor distributor for gas-liquid contacting columns |
| CN202823235U (en) * | 2012-09-28 | 2013-03-27 | 宋成文 | Slurry negative-pressure sorting homogenizer |
| JP2015066503A (en) * | 2013-09-30 | 2015-04-13 | 大日本印刷株式会社 | Agitating device and agitating method |
| CN204320459U (en) * | 2014-12-09 | 2015-05-13 | 中国矿业大学 | A kind of ore pulp pretreatment system of intensified Daqu medicament dispersion |
| CN105363380A (en) * | 2015-10-27 | 2016-03-02 | 中国矿业大学 | Device and method for pretreating external circulation type pulp based on jet flow mixing |
| CN205164634U (en) * | 2015-11-26 | 2016-04-20 | 深圳市瑞成世代实业有限公司 | Accurate slurrying device of coal |
| CN107020041A (en) * | 2016-01-29 | 2017-08-08 | 上海戴沃机械科技有限公司 | A kind of new mine product stirs barrel |
-
2018
- 2018-05-03 CN CN201810413618.9A patent/CN108480057B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5431286A (en) * | 1994-01-06 | 1995-07-11 | Inco Limited | Recirculating column flotation apparatus |
| CN1324270A (en) * | 1998-11-04 | 2001-11-28 | 通用信号公司 | Mixing system for separation of materials by flotation |
| CN201244464Y (en) * | 2008-07-22 | 2009-05-27 | 江西稀有稀土金属钨业集团有限公司 | Agitated tank |
| CN102458626A (en) * | 2009-04-29 | 2012-05-16 | Amt国际有限公司 | Vapor distributor for gas-liquid contacting columns |
| CN202823235U (en) * | 2012-09-28 | 2013-03-27 | 宋成文 | Slurry negative-pressure sorting homogenizer |
| JP2015066503A (en) * | 2013-09-30 | 2015-04-13 | 大日本印刷株式会社 | Agitating device and agitating method |
| CN204320459U (en) * | 2014-12-09 | 2015-05-13 | 中国矿业大学 | A kind of ore pulp pretreatment system of intensified Daqu medicament dispersion |
| CN105363380A (en) * | 2015-10-27 | 2016-03-02 | 中国矿业大学 | Device and method for pretreating external circulation type pulp based on jet flow mixing |
| CN205164634U (en) * | 2015-11-26 | 2016-04-20 | 深圳市瑞成世代实业有限公司 | Accurate slurrying device of coal |
| CN107020041A (en) * | 2016-01-29 | 2017-08-08 | 上海戴沃机械科技有限公司 | A kind of new mine product stirs barrel |
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