CN106984070A - A kind of flocculation stirring device dense for mine tailing - Google Patents

Abstract

The invention discloses a flocculation and stirring device for thick tailings, which comprises a housing part, a supporting part, a spiral stirring part, a fixing part and a driving part, the housing part includes a cylinder, and the cylinder has an inner accommodation space; The support part includes a ring sleeve and a support bracket; the spiral stirring part includes a spiral stirring mechanism and a turbine rotor coaxially arranged at one end of the spiral stirring mechanism. The end of the body close to the ground extends to the end of the cylinder away from the ground to form a helical stirring blade in a counterclockwise helical blade structure; the drive part includes a main shaft and a motor that drives the main shaft through a transmission. The invention enhances the interaction between the flocculant and the tailings pulp, improves the dispersion and mixing effect of the tailings pulp and the flocculant, and at the same time enhances the settling rate and thickening effect of the thickener, thereby improving the tailings treatment efficiency and improving the tailings density The overflow clarifies the water quality and reduces mine water pollution.

Description

A flocculation stirring device for tailings thickening

technical field

The invention relates to a low-speed mixing and stirring device, in particular to a flocculation and stirring device for dense tailings.

Background technique

With the continuous improvement of mineral processing technology, the amount of raw ore processing is also increasing year by year, so the amount of tailings discharged by the mineral processing plant is also increasing year by year. The low-concentration transportation of tailings not only consumes a lot of power energy, but also has less recyclable water. It seriously restricts the improvement of the economic benefits of the concentrator and pollutes the environment at the same time. As the research results of flocculation theory become more and more mature, flocculation technology has been used in the concentration and sedimentation process in the mineral processing process. It is of great significance to reduce water pollution and improve the economic benefits of the concentrator.

At present, the direct addition of flocculant and non-stirring mixing method adopted in the existing tailings thickening process has the disadvantages of poor dispersion effect of flocculant and poor tailings flocculation effect. However, the mixing method using strong mechanical stirring has the problem that the flocs are easily broken and the flocculation effect is poor. However, in production practice, in order to improve the thickening efficiency and effect, the thickener used in the tailings thickening process has higher requirements on the fluid movement characteristics of the slurry mixture injected into it. The flocculant for flocculation and settlement is fully dispersed and mixed. On the other hand, the fluid velocity of the mixed ore slurry should not be too high, otherwise it will cause damage to the relatively stable flocculation and settlement area inside the thickener and affect the effect of tailings flocculation and settlement.

Contents of the invention

In view of the defects that the flocculant and tailings slurry have poor mixing effect and the flocs are easy to break in the existing tailings flocculation and thickening process in the prior art, the purpose of the present invention is to provide a flocculation and stirring device for tailings thickening, The device enhances the cross interaction between tailings slurry and flocculant, and the radial and axial cross-mixing flow formed by spiral stirring and lifting enhances the mixing effect of tailings slurry and flocculant, and it operates at low speed The degree of breaking up the flocs is reduced, which is beneficial to the flocculation and settlement of the tailings slurry, thereby improving the thickening efficiency of the tailings.

In order to achieve the above object, technical scheme of the present invention:

A flocculation and stirring device for thick tailings, which includes a housing part with an internal accommodation space, a support part that supports the housing part so that the housing part is away from the ground and arranged at a certain inclination angle with the ground, and is placed in the The spiral stirring part in the housing part, the fixing part fixing the spiral stirring part in the housing part, and the driving part for stirring and driving the spiral stirring part are characterized in that:

The accommodating part at least includes a cylindrical body arranged at a certain inclination angle with the ground, wherein the cylindrical body has an internal accommodation space; A tailings slurry injection pipeline that communicates with each other for tailings slurry injection, and a flocculation slurry discharge pipeline that communicates with the internal accommodation space for discharge of flocculation slurry is formed at the lower end of the side wall of the cylinder at the end of the cylinder away from the ground, The flocculant slurry discharge pipe is formed with a flocculant addition pipe connected to it for flocculant addition;

The support part at least includes a ring set outside the side wall of the cylinder and fixedly installed coaxially with the cylinder, and with the center line of the cylinder as the center of symmetry, starting from the ring respectively extending toward the ground to form support brackets symmetrically arranged on both sides of the cylinder;

The spiral stirring part at least includes a spiral stirring mechanism and a turbine rotor coaxially arranged at one end of the spiral stirring mechanism, wherein the spiral stirring mechanism has an One end is extended to form a helical mixing blade with a counterclockwise helical blade structure;

The fixing part at least includes a sealing end cover capable of sealing and fixing the main shaft on the cylinder;

The driving part at least includes a main shaft that passes through the inner accommodation space of the cylinder to fix the screw stirring mechanism and drive the screw stirring mechanism and the turbine rotor to rotate, and a motor that drives the main shaft to run through a transmission.

Further, the pitch of the helical stirring blade is constant and the helical radius gradually decreases from the end of the cylinder close to the ground to the end of the cylinder away from the ground.

Further, coaxial through holes through which the main shaft passes are respectively formed on the end surface of the cylinder body near the ground and on the end surface of the cylinder body away from the ground.

Further, the motor is a horizontal adjustable speed motor.

Further, the device adopts at least two pairs of the support brackets to support the accommodating part.

Compared with prior art, the beneficial effect of the present invention:

The invention solves the problems of poor mixing effect of flocculant and tailings slurry in the existing tailings flocculation dense process, and the flocs are easy to break. The ore slurry forms an axial and radial gradient cross-mixing flow, which enhances the interaction between the flocculant and the tailings slurry. While improving the dispersion and mixing effect of the tailings slurry and flocculant, the low-speed lifting of the material reduces the impact on the formed The secondary destruction of the flocs, the low flow rate overflow is conducive to the ore feeding environment of the tailings thickener, which can enhance the sedimentation rate and thickening effect of the thickener, thereby improving the tailings treatment efficiency and improving the quality of the clarified water of the tailings thick overflow , to reduce mine water pollution.

Description of drawings

Fig. 1 is a front view of a flocculation stirring device for tailings thickening according to the present invention;

Fig. 2 is a left view of a flocculation stirring device for tailings thickening according to the present invention;

Fig. 3 is a top view of a flocculation stirring device for thick tailings according to the present invention;

Fig. 4 is a front perspective view of a flocculation and stirring device for tailings thickening according to the present invention;

Fig. 5 is a coaxial assembly diagram of the spiral stirring mechanism and the turbine rotor of the present invention.

In the figure: 1. Cylinder body, 101, end face, 102, side wall, 2. Ring sleeve, 3. Flocculant adding pipeline, 4. Tailings slurry injection pipeline, 5. Lower sealing end cover, 6. Main shaft, 7. Transmission, 8, motor, 9, upper sealing end cover, 10, flocculation slurry discharge pipe, 11, support bracket, 12, lower bearing, 13, upper bearing, 14, turbine rotor, 15, spiral stirring mechanism.

detailed description

In order to make the purpose, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the implementation of the present invention. example, not all examples. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

Aiming at the important significance of tailings flocculation and agitation for its sedimentation and density, in order to solve the problems of poor mixing effect of flocculant and tailings pulp in the existing tailings thickening process, and the flocs are easy to break, the present invention designs a tailings Dense flocculation and stirring device, the device makes the flocculant and tailings slurry form an axial and radial gradient cross-mixing flow through the conical arrangement of spiral blades, which strengthens the flow of flocculant and tailings. The interaction of ore pulp, while improving the dispersion and mixing effect of tailings slurry and flocculant, at the same time, the low-speed lifting of materials reduces the secondary damage to the formed flocs, and the low flow rate overflow helps the tailings thickener to give Mine environment, can enhance the thickener sedimentation rate and thickening effect, thereby improving the efficiency of tailings treatment, improving the quality of clarified water from tailings thick overflow, and reducing mine water pollution.

Based on the above principles, as shown in Fig. 1-Fig. 5, a kind of flocculation stirring device for tailings dense according to the present invention, it comprises:

A housing part with an internal accommodation space, the housing part at least includes a cylindrical body 1 arranged at a certain inclination angle with the ground, wherein the cylindrical body is composed of two end faces 101 and side walls 102 and has an internal housing space inside; The upper end of the side wall 102 of the cylinder at one end of the cylinder close to the ground is formed with a tailings slurry injection pipeline 4 communicating with the internal accommodation space for the injection of tailings slurry, and on the side of the cylinder at the end of the cylinder away from the ground The lower end of the wall is formed with a flocculation pulp discharge pipe 10 communicating with the internal accommodation space for the discharge of the flocculation pulp, and a flocculant addition pipe 3 cross-connected with it for the addition of flocculant is formed on the flocculant pulp discharge pipe, so that the cylinder The tailings slurry injection pipeline 4 and the flocculant addition pipeline 3 arranged on the side wall of 1 can continuously feed, and the flocculation slurry discharge pipeline 10 can continuously discharge ore; more preferably, as shown in Figures 1-3, the cylinder 1 It is an inclined cylindrical cylinder, and the cylinder and the ground, that is, the horizontal plane, are at an upwardly inclined angle of 10°---25°; more preferably, as shown in Figure 1-Figure 4, at the end of the cylinder close to the ground The end face and the end face of the end of the cylinder away from the ground are respectively formed with coaxial through holes for the main shaft to pass through; after the main shaft 6 passes through the coaxial through holes, it passes through the lower bearing 12, the upper bearing 13, and the lower seal respectively. The end cover 5 and the upper sealing end cover 9 are installed on the cylinder body, wherein the main shaft 6, the lower bearing 12 and the upper bearing 13 are used to fix the screw stirring mechanism 15, and the lower sealing end cover 5 and the upper The sealing end caps 9 are used to seal the coaxial through holes at both ends of the cylinder body 1 .

The accommodating part is supported so that the accommodating part is away from the ground and arranged at a certain inclination angle with the ground, the supporting part at least includes a support part arranged outside the side wall of the cylinder and coaxial with the cylinder The ring sleeve 2 fixedly installed and the centerline of the cylinder body as the center of symmetry extend from the ring sleeve to the ground respectively to form support brackets 11 symmetrically arranged on both sides of the cylinder body; further, the The supporting part adopts at least two pairs of the supporting brackets to support the accommodating part, as shown in Fig. 1-Fig. The bottom of the cover 2 is provided with a four-corner bracket consisting of two pairs of the supporting brackets.

The spiral stirring part placed in the accommodation part, the spiral stirring part at least includes a spiral stirring mechanism and a turbine rotor coaxially arranged at one end of the spiral stirring mechanism, wherein the spiral stirring mechanism has an axial direction along the main shaft, a self- The end of the cylinder close to the ground extends to the end of the cylinder away from the ground to form a spiral stirring blade in a counterclockwise spiral structure; further, as shown in Figure 4-Figure 5, the pitch of the spiral stirring blade is constant and the spiral radius is free. The end of the cylinder close to the ground gradually decreases to the end of the cylinder away from the ground to form a conical spiral lifting stirring mechanism. The turbine rotor 14 is a lifting stirring impeller, that is, it has an obliquely upward turbine blade along the bottom of the cylinder, and its coaxial Installed at the lower end of the spiral stirring mechanism 15, the blades of the turbine rotor 14 can stir and lift the mixed material that slides along the lower wall of the cylinder 1 and falls into the cavity at the bottom of the cylinder when rotating. Further, as shown in Fig. 5, the angle of the taper formed by the spiral stirring blade is preferably 3°---10°, and the conical spiral lifting blade of the spiral stirring mechanism 15 has a certain The angle can make it have a spiral radius that gradually decreases along the upward direction of the cylinder, so that the mixed material forms a gradient radial flow, and then forms a high radial flow during rotation and goes down the inclined cylinder during the lifting process. The material falling off the wall can form an axial and radial cross-mixing flow to enhance the mixing effect, and the low-speed conical spiral lifting method reduces the flow rate of the flocculation slurry.

The spiral stirring part is fixed to the fixing part in the accommodating part, and the fixing part at least includes a sealing end cover capable of sealing and fixing the main shaft on the cylinder body, which includes an upper sealing end cover 9 and a lower sealing end cover. Cover 5.

and a driving part for agitating and driving the helical agitating part, the driving part at least includes a drive part passing through the inner accommodation space of the cylinder to fix the helical agitating mechanism and drive the helical agitating mechanism and the turbine rotor to rotate The main shaft 6 and the motor that drives the main shaft to run through the transmission 7 . Further, the motor is a horizontal adjustable speed motor. Further, as shown in Figures 1 to 4, the main shaft 6 is also inclined, and the horizontal main shaft of the motor is running. The transmission is decelerated and driven to run the inclined main shaft 6, and the main shaft 6 drives the spiral stirring mechanism 15 and the turbine rotor 14. The flocculant and tailings pulp are stirred and mixed, and the motor 8 speed can be controlled and adjusted according to the flocculation effect and the processing amount of the pulp. Further, the transmission is a variable speed connection system with an obliquely arranged main shaft and a horizontal shaft of the motor, and the speed change and steering are performed internally through gear meshing.

The above is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto, any person familiar with the technical field within the technical scope disclosed in the present invention, according to the technical solution of the present invention Any equivalent replacement or change of the inventive concepts thereof shall fall within the protection scope of the present invention.

Claims (5)

1. A flocculation and stirring device for dense tailings, which includes a housing part with an internal accommodation space, a supporting part that supports the housing part so that the housing part leaves the ground and is arranged at a certain inclination angle with the ground, and is The spiral stirring part placed in the containing part, the fixing part fixing the spiral stirring part in the containing part, and the driving part for stirring and driving the spiral stirring part are characterized in that: The accommodating portion at least includes a cylinder arranged at a certain inclination angle to the ground, wherein the cylinder has an internal accommodation space; The tailings slurry injection pipeline is communicated with the internal accommodation space for the injection of tailings slurry, and the flocculation slurry communicated with the internal accommodation space is formed at the lower end of the side wall of the cylinder at the end of the cylinder away from the ground for the discharge of the flocculation slurry A discharge pipe, the flocculant slurry discharge pipe is formed with a flocculant addition pipe communicating with it for the addition of flocculant; The support part at least includes a ring set outside the side wall of the cylinder and fixedly installed coaxially with the cylinder, and with the center line of the cylinder as the center of symmetry, starting from the ring respectively extending toward the ground to form support brackets symmetrically arranged on both sides of the cylinder; The spiral stirring part at least includes a spiral stirring mechanism and a turbine rotor coaxially arranged at one end of the spiral stirring mechanism, wherein the spiral stirring mechanism has an One end is extended to form a helical mixing blade with a counterclockwise helical blade structure; The fixing part at least includes a sealing end cover capable of sealing and fixing the main shaft on the cylinder; The driving part at least includes a main shaft that passes through the inner accommodation space of the cylinder to fix the screw stirring mechanism and drive the screw stirring mechanism and the turbine rotor to rotate, and a motor that drives the main shaft to run through a transmission. 2. The flocculation stirring device according to claim 1, characterized in that: The pitch of the helical stirring blade is constant and the helical radius gradually decreases from the end of the cylinder close to the ground to the end of the cylinder away from the ground. 3. The flocculation stirring device according to claim 1, characterized in that: Concentric through holes for the main shaft to pass through are respectively formed on the end surface of the cylinder body near the ground and on the end surface of the cylinder body away from the ground. 4. The flocculation stirring device according to claim 1, characterized in that: The motor is a horizontal adjustable speed motor. 5. The flocculation stirring device according to claim 1, characterized in that: The device uses at least two pairs of the supporting brackets to support the accommodating part.