CN116517618A - Thickening and cementing device combined with sand bin and tailing filling system - Google Patents

Abstract

The invention relates to the technical field of tailing filling, in particular to a thickening and cementing device combined with a sand bin and a tailing filling system, which comprise a vertical sand bin body, a weighting piston and a stirrer; the weighting piston is arranged in the vertical sand bin body and can slide up and down along the inner wall of the vertical sand bin body, the stirrer is arranged at the lower end of the weighting piston, and the up-and-down motion of the weighting piston drives the stirrer to perform rotary motion; the upper end of the vertical sand bin body is provided with a feed inlet and an overflow port, the lower end of the vertical sand bin body is provided with a drain hole, and the bottom of the vertical sand bin body is provided with a paste outlet. Compared with the prior art, the thickening and cementing device and the tailing filling system combined with the sand bin are improved by utilizing the existing sand bin; on the other hand, the procedure of forming paste is reduced, and the cost is saved; the concentration of the tailings in the bin and the formation of paste are judged by controlling the water discharge.

Description

A thickening and cementing device combined with a sand bin and a tailings filling system

technical field

The invention relates to the technical field of tailings filling, in particular to a thickening and cementing device combined with a sand bin and a tailings filling system.

Background technique

The development of the mining industry will inevitably produce a large amount of tailings. my country is a country with a lot of people and little land. Extensive mining in the past has caused great damage to the environment, mainly in surface subsidence, tailings ponds and waste rock dumps occupy a huge area, and waste water is discharged without treatment, which seriously damages the ecological environment. . However, the amount of tailings produced every year is huge, and what can be used as resources is extremely limited. The real way to use a large amount of tailings is to fill goafs.

At present, the application of tailings filling technology has played an important role in the mine's environmental protection, safety, emission reduction and comprehensive utilization of resources. The vast majority of non-ferrous underground mines have adopted the filling mining method, and more and more black, nuclear, coal, and chemical mines have also begun to adopt filling mining technology.

Tailings filling is a filling process in which the tailings of the dressing plant are used as the filling aggregate and cement is used as the cementitious material. The specific process flow is: the low-concentration tailings mortar discharged from the dressing plant is pumped to the filling station, and the high-concentration tailings mortar is prepared by concentration and dehydration and stored in the storage facility of the filling station. The bulk cement is transported to the filling station and transported to the cement by high-pressure gas. Storage in the silo; when filling, the high-concentration tailing mortar and cement are transported to the mixing facility respectively, and the qualified filling slurry is prepared by stirring the average person, and then transported to the stope for filling.

The existing tailings thickener generally has two methods: vertical sand bin and deep cone thickener; the vertical sand bin has low filling capacity, requires multiple processes and takes a long time to dewater; the deep cone thickener is a non-standard equipment and cannot Ensuring the concentration of tailings has a direct impact on the formation of paste; these factors make the entire filling process complex and uncertain.

In view of this, the present invention is proposed.

Contents of the invention

The purpose of the present invention is to provide a thickening and cementing device combined with a sand bin and a tailings filling system to solve the problems mentioned in the above-mentioned background technology.

To achieve one of the above objects, the present invention provides the following technical solutions:

A thickening and cementing device combined with a sand bin, comprising a vertical sand bin body, a weighted piston, and an agitator; the weighted piston is arranged inside the vertical sand bin body, and along the vertical sand bin body The wall can slide up and down, the agitator is arranged at the lower end of the weighted piston, and the up and down movement of the weighted piston drives the agitator to rotate;

A feed inlet and an overflow port are provided at the upper end of the vertical sand bin body, drainage holes are arranged at the lower end of the vertical sand bin body, and a paste outlet is arranged at the bottom of the vertical sand bin body.

Preferably, a pulley is provided above the vertical sand bin body, the pulley includes a driving pulley and a driven pulley, the driving pulley is rotated by connecting a motor, and one end of a connecting rod is connected to the driven pulley, the The other end of the connecting rod is connected with the weighted piston.

Preferably, installable covers are provided on the feed inlet and the overflow outlet.

Preferably, it also includes a seamless steel pipe, the seamless steel pipe leads to the lower end of the vertical sand bin and is located below the agitator, and the drain hole is located on the seamless steel pipe.

Preferably, the seamless steel pipe is arranged in a ring shape at the bottom of the vertical sand bin body.

Preferably, a flow meter and a valve are arranged on the seamless steel pipe outside the vertical sand bin body.

Preferably, a pressure gauge is also provided on the outer wall of the vertical sand bin body.

Preferably, the weighted piston is connected to the agitator through a slider crank mechanism, and the slider crank mechanism converts the up and down reciprocating motion of the weighted piston into the rotational motion of the agitator.

Preferably, the length of the paste outlet is 3-4 times the diameter of the paste outlet.

In order to achieve the above-mentioned object two, the present invention provides the following technical solutions:

A tailings filling system includes a thickening and cementing device combined with a sand bin as described above.

Compared with the prior art, the invention provides a thickening and cementing device combined with a sand bin and a tailings filling system, which has the beneficial effects of:

1. In the thickening and cementing device combined with the sand bin and the tailings filling system provided by the present invention, a motor is arranged on the upper part of the vertical sand bin body, and the belt and the transmission rotor are connected with the weighted piston through the connecting rod. The upper part of the side is provided with a feed port and an overflow port; the weighted piston is connected with the linkage mechanism to drive the mixer below to stir the paste, the bottom of the sand bin is surrounded by seamless steel pipes, and the seamless steel pipes are provided with drainage holes. In this way, on the one hand, the existing sand bin is used for transformation; on the other hand, the process of paste formation is reduced and the cost is saved; the concentration of tailing sand in the bin and the formation of paste are judged by controlling the drainage.

2. In the thickening and cementing device combined with the sand bin and the tailings filling system provided by the present invention, the bin is pressurized by the up and down movement of the weighted piston, and the pore water in the sand body near the bottom of the tailing sand layer near the steel pipe and the There is a strong seepage effect between the solid particles, and a large force will be generated between the two. At the bottom, the solid particles are relatively dense, and the downward seepage velocity of water is greater than the sinking velocity of the particles. At the top, the particles are relatively sparse, and the self-weight The sedimentation speed under the action is fast, and the sinking speed of soil particles is greater than the downward seepage speed of water, so the tailings will be drained from the upper and lower surfaces.

3. In the thickening and cementing device combined with the sand bin and the tailings filling system provided by the present invention, a valve is set at the outlet of the drainage pipe to control the water volume, and the drainage flow is measured by a flow meter to calculate the current in the sand bin. There is tailings concentration.

4. In the thickening and cementing device combined with the sand bin and the tailings filling system provided by the present invention, the weighted piston is connected to the linkage mechanism and makes a circular motion around the fixed shaft to drive the agitator to rotate. The agitator is equipped with an impeller to make the cement and The tailings are fully mixed to form a paste. A paste outlet is provided at the bottom of the sand bin, and the length is about 3-4 times the diameter of the outlet to form an orifice outflow effect, and the paste flow out is smoother by using the pressurization and orifice outflow effect.

In order to make the above-mentioned objects, features and advantages of the present invention more comprehensible, preferred embodiments will be described in detail below together with the accompanying drawings.

Description of drawings

In order to illustrate the technical solutions of the embodiments of the present invention more clearly, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention, and thus It should be regarded as a limitation on the scope, and those skilled in the art can also obtain other related drawings based on these drawings without creative work.

Fig. 1 is a schematic structural diagram of a thickening and cementing device combined with a sand bin provided by an embodiment of the present invention.

Fig. 2 is a structural schematic diagram of a weighted piston and agitator provided by an embodiment of the present invention.

The figure shows as follows:

100, vertical sand bin body; 110, feed inlet; 120, overflow port; 130, paste outlet; 140, drainage hole; 200, weighted piston; 300, agitator; 400, linkage mechanism; 500, pulley; 510, driving wheel; 520, driven wheel; 600, connecting rod; 700, pressure gauge; 800, seamless steel pipe; 810, flow meter; 820, valve.

Detailed ways

The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. The components of the embodiments of the invention generally described and illustrated in the figures herein may be arranged and designed in a variety of different configurations. Accordingly, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without making creative efforts belong to the protection scope of the present invention.

As shown in Figure 1, the embodiment of the present invention provides a thickening and cementing device combined with a sand bin, including a vertical sand bin body 100, a weighted piston 200, and an agitator 300, and the weighted piston 200 is arranged on the vertical sand bin. The inside of the bin body 100 can slide up and down along the inner wall of the vertical sand bin body 100, the agitator 300 is arranged at the lower end of the weighted piston 200, and the up and down movement of the weighted piston 200 drives the agitator 300 to rotate sports. The upper end of the vertical sand bin body 100 is provided with a feed inlet 110 and an overflow port 120, and the lower end of the vertical sand bin body 100 is provided with a drainage hole 140. A paste outlet 130 is provided at the bottom.

In addition, a belt pulley 500 is provided above the vertical sand bin body 100, the belt pulley 500 includes a driving pulley 510 and a driven pulley 520, the driving pulley 510 is rotated by connecting a motor, and a continuous One end of the rod 600 and the other end of the connecting rod 600 are connected to the weighted piston 200 .

In the present invention, the sand bin is modified based on the sand bin, and the vertical sand bin is closed. The motor, the belt and the transmission rotor are connected to the weighted piston 200 through the connecting rod 600 on the upper part of the sand bin. The port 110 is connected to the overflow port 120; the weighted piston 200 is connected to the linkage mechanism 400 to drive the mixer below to stir the paste. There is a strong seepage effect between the pore water and the solid particles in the tailings near the vent pipe, and there is a relatively large relative velocity between the solid and liquid phases. According to the two-phase fluid theory, there will be a relatively large flow between the two phases Great force. The initial state of the tailings is uniform. At the beginning, the water in the sand bin penetrates downward at the same speed. As time goes by, the density of the tailings at the bottom of the sand bin is gradually greater than that of the upper layer. The drainage rate remains unchanged, the denser the material, the smaller the cross-sectional area of the water, and the greater the seepage velocity, so the water seepage velocity is larger at the bottom and smaller at the top. The tailings particles at the bottom are denser, and the downward seepage velocity of water is greater than the sinking velocity of tailings; at the top, the tailings are relatively sparse, and the sedimentation velocity under the action of self-weight is faster, and the sinking velocity of tailings particles is greater than the downward seepage velocity of water. Therefore, the water seepage velocity is lower than the upper and smaller, and the sinking velocity of the tailings particles is lower than the lower and larger. Through the pressure of the device, the water in the tailings is layered, and the water in the lower part seeps quickly, and quickly flows out through the water pipes in the sand field. The water seeping out of the surface can be mixed with the cement at the feed port 110, and mixed with the tailings to form a paste. The body flows out of the sand chamber by utilizing the pressure inside the sand chamber and the orifice outflow effect.

In a preferred embodiment provided by the embodiment of the present invention, it also includes a seamless steel pipe 800, the seamless steel pipe 800 leads to the lower end of the vertical sand bin body 100, and is located below the agitator 300, so The drainage hole 140 is located on the seamless steel pipe 800 . The seamless steel pipe 800 is arranged in a ring shape at the bottom of the vertical sand bin body 100 . A flow meter 810 and a valve 820 are arranged on the seamless steel pipe 800 outside the vertical sand bin body 100 . A pressure gauge 700 is also provided on the outer wall of the vertical sand bin body 100 . Installable caps are provided on the feed port 110 and the overflow port 120 .

In addition, as shown in FIG. 2 , in a preferred embodiment provided by the embodiment of the present invention, the weighted piston 200 is connected to the agitator 300 through a slider-crank mechanism, and the slider-crank mechanism connects the weighted The up and down reciprocating motion of the piston 200 is converted into the rotary motion of the agitator 300 . In the present invention, in addition to pressurizing the chamber through up and down reciprocating motion, the weighted piston 200 further drives the agitator 300 to rotate through up and down reciprocating motion, specifically the linkage mechanism 400 that converts up and down reciprocating motion into rotary motion, such The linkage mechanism 400 can be a cam mechanism or a crank-slider mechanism. In addition, existing patent documents also provide a large number of ways of converting reciprocating motion into rotary motion mechanisms, such as Chinese patent CN206338379U. Therefore, the reciprocating movement of the weighted piston 200 up and down drives the agitator 300 to perform a rotational movement, which belongs to the common knowledge and conventional means of those skilled in the art.

Another embodiment of the present invention also provides a tailings filling system, including a thickening and cementing device combined with a sand bin. The thickening and cementing device combined with a sand bin includes a vertical sand bin body 100, a weighted piston 200, Agitator 300, the weighted piston 200 is arranged inside the vertical sand bin 100, and can slide up and down along the inner wall of the vertical sand bin 100, the agitator 300 is arranged at the lower end of the weighted piston 200 , the weighted piston 200 moves up and down to drive the agitator 300 to rotate. The upper end of the vertical sand bin body 100 is provided with a feed inlet 110 and an overflow port 120, and the lower end of the vertical sand bin body 100 is provided with a drainage hole 140. A paste outlet 130 is provided at the bottom.

In addition, a belt pulley 500 is provided above the vertical sand bin body 100, the belt pulley 500 includes a driving pulley 510 and a driven pulley 520, the driving pulley 510 is rotated by connecting a motor, and a continuous One end of the rod 600 and the other end of the connecting rod 600 are connected to the weighted piston 200 .

The invention provides a thickening and cementing device combined with a sand bin and a tailings filling system. Its working principle is: low-concentration tailings enter the sand bin through the feed port 110, and the motor on the sand bin starts to drive the driving wheel. 510, the driving wheel 510 and the driven wheel 520 are linked through a belt, so that the driven wheel 520 rotates. The driven wheel 520 is fixed to the connecting rod 600, and drives the connecting rod 600 to reciprocate. When the chamber is pressurized, there is a strong seepage effect between the pore water in the sand body near the steel pipe at the bottom of the tailings layer and the solid particles, and a large force will be generated between the two. At the bottom, the solid particles are more Dense, the downward seepage velocity of water is greater than the sinking velocity of particles. At the top, the particles are relatively sparse, and the settling velocity under the action of self-weight is faster. The sinking velocity of soil particles is greater than the downward seepage velocity of water, so the tailings will flow from the upper and lower surfaces drain. A valve 820 is set at the outlet of the drainage pipe to control the water volume, and the drainage flow is measured by the flow meter 810 to calculate the existing tailings concentration in the sand bin; Complete the thickening process of tailings. After the tailing sand concentration in the sand bin reaches the requirement, cement is added through the feed port 110 to mix with the tailing sand and the upper effluent. The weighted piston 200 is connected with the linkage mechanism 400, and makes a circular motion around the fixed shaft to drive the agitator 300 to rotate. The agitator 300 is equipped with an impeller, so that the cement and the tailings are fully mixed to form a paste. A paste outlet 130 is provided at the bottom of the sand bin, the length of which is 3-4 times the diameter of the outlet to form an orifice outflow effect, and the paste is made to flow out more smoothly by using the pressurization and orifice outflow effect.

In the description of the present invention, it should also be noted that, unless otherwise clearly specified and limited, the terms "installation", "installation", "connection" and "connection" should be understood in a broad sense, for example, it may be a fixed connection, It can also be a detachable connection or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediary, and it can be the internal communication of two components. Those of ordinary skill in the art can understand the specific meanings of the above terms in the present invention in specific situations.

The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and changes. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the protection scope of the present invention. It should be noted that like numerals and letters denote similar items in the following figures, therefore, once an item is defined in one figure, it does not require further definition and explanation in subsequent figures.

Claims (10)

1. The thickening and cementing device combined with the sand bin is characterized by comprising a vertical sand bin body, a weighting piston and a stirrer; the weighting piston is arranged in the vertical sand bin body and can slide up and down along the inner wall of the vertical sand bin body, the stirrer is arranged at the lower end of the weighting piston, and the up-and-down motion of the weighting piston drives the stirrer to perform rotary motion;

the upper end of the vertical sand bin body is provided with a feed inlet and an overflow port, the lower end of the vertical sand bin body is provided with a drain hole, and the bottom of the vertical sand bin body is provided with a paste outlet.

2. The device for thickening and cementing a sand silo according to claim 1, wherein a belt pulley is arranged above the vertical sand silo body, the belt pulley comprises a driving wheel and a driven wheel, the driving wheel rotates through a connecting motor, the driven wheel is connected with one end of a connecting rod, and the other end of the connecting rod is connected with the weighting piston.

3. A thickening and cementing apparatus in combination with a sand silo according to claim 2 wherein mountable covers are provided over the feed inlet and the overflow outlet.

4. A sand silo combined thickening and cementing device according to claim 3, further comprising a seamless steel pipe which is led to the lower end of the vertical sand silo body and is positioned below the stirrer, and the drain hole is positioned on the seamless steel pipe.

5. The sand silo-combined thickening and cementing device of claim 4, wherein the seamless steel pipes are annularly arranged at the bottom of the vertical sand silo body.

6. The device of claim 5, wherein a flowmeter and a valve are provided on the seamless steel pipe outside the vertical sand silo.

7. The device of claim 6, wherein a pressure gauge is further provided on the outer wall of the vertical sand silo.

8. The device of claim 7, wherein the weighted piston is connected to the agitator by a slider-crank mechanism, and the slider-crank mechanism converts the up-and-down reciprocating motion of the weighted piston into the rotational motion of the agitator.

9. The apparatus of claim 8 wherein the paste outlet has a length of 3 to 4 times the diameter of the paste outlet.

10. A tailings pond filling system comprising a thickening and cementing apparatus incorporating a sand silo according to any one of claims 1 to 8.