CN110975350B

CN110975350B - Tailing thickener and tailing treatment system

Info

Publication number: CN110975350B
Application number: CN201911175824.1A
Authority: CN
Inventors: 王旭东; 刘庆安; 赵远同; 章晓明; 段洪勤; 马常春
Original assignee: Sichuan Huidong Daliang Mining Co ltd
Current assignee: Sichuan Huidong Daliang Mining Co ltd
Priority date: 2019-11-26
Filing date: 2019-11-26
Publication date: 2021-08-20
Anticipated expiration: 2039-11-26
Also published as: CN110975350A

Abstract

The invention provides a tailing thickener, which comprises a pool body, a rotating shaft, a rake frame, a bridge frame, a speed reducer, a power device and a feeding pipe, wherein a feeding device is fixed below the bridge frame and comprises a mixing device and a distributing device, the mixing device is arranged outside the rotating shaft and coaxial with the rotating shaft, and stirring blades which are arranged on the rotating shaft and correspond to the mixing cylinder, the distributing device comprises a distributing cylinder which is rotatably connected with the mixing cylinder and fixed on the rotating shaft, a plurality of distributing cylinders which are horizontally arranged at the lower end of the mixing cylinder and communicated with the mixing cylinder are arranged below the distributing cylinder, annular racks are arranged on the inner wall of the pool body, feeding shafts coaxial with the distributing cylinders are arranged in the distributing cylinders, spiral feeding blades are arranged on the feeding shafts, distributing holes are formed in the bottoms of the distributing cylinders, and gears meshed with the racks are arranged at one ends, close to the inner wall of the pool body, of the feeding shafts. The invention can avoid the mixing caused by directly impacting the bottom of the tank body by the slurry after stirring, and simultaneously avoid the mixing caused by excessive slurry entering the mixing barrel in a short time.

Description

Tailing thickener and tailing treatment system

Technical Field

The application relates to the technical field of tailing treatment equipment, in particular to a tailing thickener and a tailing treatment system.

Background

The thickener is a solid-liquid separation device based on gravity settling effect, and is generally a cylindrical shallow groove with a conical bottom, which is built by taking concrete, wood or a metal welding plate as a structural material. The method can concentrate ore pulp with the solid weight of 10-20% into underflow ore pulp with the solid content of 45-55% through gravity settling, and the thickened underflow ore pulp is discharged from a underflow opening at the bottom of a thickener under the action of a rake which is installed in the thickener and runs at a slow speed (1/3-1/5 r/min). The conventional feeding device is a cylinder extending into the middle lower part of the thickener, and the ore pulp is radially fed into the cylinder and flows into a dense phase layer of the thickener disorderly and automatically. Although the feeding device has a simple structure, the mixing efficiency is low, and the feeding device cannot be suitable for a high-efficiency thickener accompanied with a flocculating agent adding process. In this regard, various feeding devices with novel structures and excellent performance have been developed, but the mixing and dispersing efficiency still has much room for improvement, and further research is needed.

The prior art generally adopts the tangential feed, utilize the whirl to make ground paste at the inside circumference evenly distributed of feed cylinder, however do not reduce the effort of ground paste effect in the thickener bottom, still give certain disturbance simultaneously in the feeding and make its and flocculating agent misce bene, be convenient for subside, nevertheless the effort of settling to the bottom in the season too big can lead to the thickener to run and mix the precipitation effect that influences the thickener, simultaneously because the speed of thick liquids feeding is not even, when the thick liquids is too much in the short time, also can appear running and mixing the phenomenon when having greater than the thickener settling velocity.

Disclosure of Invention

An object of the embodiment of this application is to provide a tailing thickener, can make the feeding even and reduce the impact force that thick liquids subside and produce.

The embodiment of the application provides a tailing thickener, which comprises a tank body, a rotating shaft, a rake rack, a bridge frame, a speed reducer, a power device and a feeding pipe, it is characterized in that a feeding device is fixed below the bridge frame, the feeding device comprises a mixing device and a distributing device, the mixing device is arranged outside the rotating shaft and is coaxial with the rotating shaft, and the stirring blades which are arranged on the rotating shaft and correspond to the mixing cylinder, the distributing device comprises a material distributing barrel which is rotationally connected with the mixing barrel and fixed on the rotating shaft, a plurality of distributing barrels which are horizontally arranged at the lower end of the mixing barrel and communicated with the mixing barrel are arranged below the material distributing barrel, an annular rack is arranged on the inner wall of the tank body, a feeding shaft coaxial with the distributing cylinder is arranged in the distributing cylinder, the feeding shaft is provided with spiral feeding blades, the bottom of the distributing cylinder is provided with a distributing hole, and one end of the feeding shaft, which is close to the inner wall of the tank body, extends out of the distributing cylinder and is provided with a gear meshed with the rack.

In the implementation process, the slurry enters the mixing barrel through the feeding pipe, the flocculating agent enters the mixing pipe, the rotating shaft rotates to drive the stirring blade to rotate to stir the slurry and the flocculating agent in the mixing barrel to be fully mixed, the stirred and mixed slurry enters the distributing barrel through the distributing barrel, the distributing barrel and the distributing barrel are driven to rotate when the rotating shaft rotates, meanwhile, the gear on the feeding shaft is meshed with the rack on the inner wall of the tank body to drive the feeding shaft to rotate, so that the slurry in the distributing barrel is conveyed to be fully distributed on the distributing barrel and then slowly falls down through the distributing hole, the uniform mixing between the slurry and the flocculating agent is improved in a stirring and mixing mode to facilitate sedimentation, the effect of sedimentation and mineral separation is improved, the phenomenon that the slurry after being stirred in the past directly impacts the bottom of the tank body to cause mixing is changed, the slurry is statically settled in the distributing barrel, and the impact of the slurry on the bottom of the tank body is reduced, avoided the running to mix, when the thick liquids that get into in the compounding section of thick bamboo in the short time is too much simultaneously, thick liquids can not directly get into the cell body after mixing and subside yet, but because the rotational speed of pivot is invariable, consequently more the material that gets into the compounding section of thick bamboo can get into the transport of waiting for helical conveying blade in the distribution section of thick bamboo, consequently has left the time of revising for the staff, avoids mixing because the running that the too much feeding leads to improves the effect of subsiding of thickener.

Furthermore, an inverted funnel-shaped bulk material plate is arranged in the material distributing cylinder.

Further, be provided with the spoiler on the compounding section of thick bamboo inner wall, the spoiler sets up between two stirring vane, improves the complexity that liquid flows in the compounding section of thick bamboo to improve the effect of compounding.

Further, the included angle between the vertical ridge line of the stirring blade and the axis of the rotating shaft is 45 degrees.

Furthermore, the number of the distributing cylinders is 4-8.

Furthermore, stirring vane sets up on the axle sleeve, the axle sleeve passes through positioning bolt to be fixed in the pivot, fixes the axle sleeve that will have stirring vane to the pivot through positioning bolt after fixing the pivot earlier during the installation again, simple to operate.

Furthermore, the mixing cylinder is made of two mixing plates with semi-annular cross sections used in pairs, and the two mixing plates are fixed by fixing bolts.

The invention also discloses a tailing treatment system, which is characterized by comprising the tailing thickener.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are required to be used in the embodiments of the present application will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered as limiting the scope, and that those skilled in the art can also obtain other related drawings based on the drawings without inventive efforts.

FIG. 1 is a schematic structural diagram of a tailing thickener according to the present invention;

FIG. 2 is an enlarged view of a portion A of FIG. 1;

FIG. 3 is a schematic structural view of the shaft sleeve and the stirring blade;

FIG. 4 is a schematic view of the structure of the mixing barrel.

Icon: 1-pool body, 2-rake frame, 3-bridge frame, 4-rotating shaft, 5-feeding pipe, 6-speed reducer, 7-motor, 8-feeding device, 810-mixing device, 811-stirring blade, 812-mixing barrel, 812 a-mixing plate, 812 b-fixing bolt, 813-spoiler, 814-shaft sleeve, 815-positioning bolt, 820-distributing device, 821-distributing barrel, 822 a-distributing hole, 823-distributing plate, 824-feeding shaft, 825-spiral feeding blade, 826-gear and 827-rack.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.

A tailing thickener comprises a pool body 1, a rotating shaft 4, a rake frame 2, a bridge frame 3, a speed reducer 6, a power device and a feeding pipe 5, and is characterized in that a feeding device 8 is fixed below the bridge frame 3, the feeding device 8 comprises a mixing device 810 and a distributing device 820, the mixing device 810 is arranged outside the rotating shaft 4 and coaxial with the rotating shaft 4, and stirring blades 811 are arranged on the rotating shaft 4 and corresponding to the mixing cylinder 812, the distributing device 820 comprises a distributing cylinder 821 which is rotatably connected with the mixing cylinder 812 and fixed on the rotating shaft 4, a plurality of distributing cylinders 822 horizontally arranged at the lower ends of the mixing cylinders 812 and communicated with the mixing cylinders 812 are arranged below the distributing cylinder 821, an annular rack 827 is arranged on the inner wall of the pool body 1, feeding shafts 824 coaxial with the distributing cylinder 822 are arranged in the distributing cylinder 822, spiral feeding blades 825 are arranged on the feeding shafts 824, the bottom of the material distributing cylinder 822 is provided with a material distributing hole 822a, one end of the feeding shaft 824, which is close to the inner wall of the tank body 1, extends out of the material distributing cylinder 822 and is provided with a gear 826 meshed with a rack 827, an inverted funnel-shaped material distributing plate 823 is arranged in the material distributing cylinder 821, a spoiler 813 is arranged on the inner wall of the material mixing cylinder 812, the spoiler 813 is arranged between two stirring blades 811, an included angle between a vertical ridge line of the stirring blades 811 and the axis of the rotating shaft 4 is 45 degrees, the number of the material distributing cylinders 822 is 4, the stirring blades 811 are arranged on a shaft sleeve 814, the shaft sleeve 814 is fixed on the rotating shaft 4 through a positioning bolt 815, the material mixing cylinder 812 is made of two material mixing plates 812a which are used in pairs and have semi-annular cross sections, and the two material mixing plates 812a are fixed by a fixing bolts 812 b.

The specific working principle is as follows: the slurry enters a mixing cylinder 812 through a feeding pipe 5, the flocculating agent enters a mixing pipe, a rotating shaft 4 rotates to-be-determined stirring blades 811 to stir the slurry and the flocculating agent in the mixing cylinder 812 to be fully mixed, the stirred and mixed slurry enters a distributing cylinder 822 through a distributing cylinder 821, the rotating shaft 4 drives the distributing cylinder 821 and a distributing cylinder 822 to rotate when rotating, meanwhile, a gear 826 on a feeding shaft 824 is meshed with a rack 827 on the inner wall of a tank body 1 to drive the feeding shaft 824 to rotate, so that the slurry in the distributing cylinder 822 is transmitted and distributed to the distributing cylinder 822 and slowly falls through a distributing hole 822a, the uniform mixing between the slurry and the flocculating agent is improved in a stirring and mixing mode, the effect of sedimentation and mineral separation is improved, the phenomenon that the slurry after being stirred in the past directly impacts the bottom of the tank body 1 to cause mixing is changed, and the slurry is statically settled in the distributing cylinder 822, reduced the impact of thick liquids to cell body 1 bottom, avoided running to mix, simultaneously when getting into the thick liquids of compounding section of thick bamboo 812 too much in the short time, thick liquids can not directly get into in the cell body 1 after mixing and subside yet, but because the rotational speed of pivot 4 is invariable, consequently, the material that gets into compounding section of thick bamboo 812 more can get into the transport of waiting for helical conveying blade in distributing cylinder 822, consequently, the time of revising has been left for the staff, avoid because the too much running that leads to of feeding mixes, improve the settlement effect of thickener.

The above description is only for the specific embodiments of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present application, and shall be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

1. A tailing thickener comprises a tank body, a rotating shaft, a rake frame, a bridge frame, a speed reducer, a power device and a feeding pipe and is characterized in that a feeding device is fixed below the bridge frame and comprises a mixing device and a distributing device, the mixing device comprises a mixing barrel which is arranged outside the rotating shaft and coaxial with the rotating shaft and stirring blades which are arranged on the rotating shaft and correspond to the mixing barrel, the distributing device comprises a distributing barrel which is rotatably connected with the mixing barrel and fixed on the rotating shaft, an inverted funnel-shaped bulk material plate is arranged in the distributing barrel, a plurality of distributing barrels which are horizontally arranged at the lower end of the mixing barrel and communicated with the mixing barrel are arranged below the distributing barrel, an annular rack is arranged on the inner wall of the tank body, a feeding shaft which is coaxial with the distributing barrel is arranged in the distributing barrel, spiral feeding blades are arranged on the feeding shaft, and distributing holes are arranged at the bottom of the distributing barrel, one end of the feeding shaft, which is close to the inner wall of the tank body, extends out of the distributing barrel and is provided with a gear meshed with the rack.

2. The tailings thickener of claim 1, wherein a spoiler is arranged on the inner wall of the mixing barrel, and the spoiler is arranged between the two stirring blades.

3. The tailings thickener of claim 1, wherein the vertical ridge of the stirring blade forms an angle of 45 ° with the axis of the rotating shaft.

4. The tailings thickener of claim 1, wherein the number of the distribution cylinders is 4 to 8.

5. The tailings thickener of claim 1, wherein the stirring blade is disposed on a shaft sleeve, and the shaft sleeve is fixed on the rotating shaft by a positioning bolt.

6. The tailings thickener of claim 1, wherein the mixing barrel is made of two mixing plates with semi-annular cross sections, and the two mixing plates are fixed by fixing bolts.

7. A tailings treatment system comprising a tailings thickener according to any of claims 1 to 6.