A device for preparing modified concentrated full-tailings mortar

Abstract

The invention provides a modified concentrated whole tailings mortar preparation device, which relates to the technical field of surface harmless storage of modified and solidified concentrated whole tailings mortar, and comprises a mixing barrel, a first mixing blade assembly, a blade assembly, a double-ring feeding and dosing assembly and a negative pressure feeding mechanism; the first mixing blade assembly and the blade assembly are both installed in the mixing barrel, and the first mixing blade assembly is located above the blade assembly; the double-ring feeding and dosing assembly and the negative pressure feeding mechanism are both installed in the mixing barrel, and are both located above the first mixing blade assembly, the double-ring feeding and dosing assembly has a slurry outlet and a liquid solidification material outlet, the negative pressure feeding mechanism has a powder solidification material outlet, and the directions of any two of the slurry outlet, the liquid solidification material outlet and the powder solidification material outlet have an angle, so that the materials sprayed out of each outlet are impacted and mixed and rolled upward by the rotating first mixing blade assembly, and the blade assembly further stirs the mixed materials to improve the uniformity of mixing the tailings slurry and the solidification material.

Description

Technical Field

[0001] The present invention relates to the technical field of harmless surface storage of modified and solidified thickened full tailings mortar, and in particular to a device for preparing modified thickened full tailings mortar. Background Art

[0002] Tailings sand is the waste solid left after ore mining and separation. The traditional treatment of tailings is to place it into the tailings pond by means of dry discharge or wet discharge. The tailings pond is an artificial high-potential hazard source with a relatively high safety risk. In order to ensure the safety of people's lives and property and prevent major accidents from occurring, the state encourages reducing and eliminating tailings, and at the same time adopting new technologies to reuse tailings.

[0003] Limited by the ore dressing technology, there is still a part of the ore grade in the tailings that cannot be separated. If the tailings are completely discarded, it will cause unnecessary waste. Therefore, some scholars propose that the tailings can be stored and the remaining minerals in the tailings can be further selected after the development of ore dressing technology to achieve the efficient utilization of resources. Thus, the concept of harmless surface treatment of tailings came into being.

[0004] Stacking is one of the ways of surface treatment of tailings. The selected tailings often exist in the form of tailings slurry. In order to achieve stacking, the tailings slurry needs to be solidified. The mixing uniformity of the tailings and the solidifying material directly affects the hydration effect of the solidifying material and the structural strength of the tailings solidified body, and determines whether the tailings stack can stably exist.

[0005] Traditional tailings consolidation methods, such as the consolidation of tailings underground filling, usually directly put the tailings slurry and the solidifying material into the mixing device for mixing and then inject it into the underground void. Due to the influence of the confining pressure in the underground void, the consolidated body for filling can often be compacted by external forces, and the underground void environment is rarely affected by the surface climate. Therefore, the occurrence conditions of the consolidated body for filling are relatively stable, and the requirements for the mixing effect are relatively low. For surface stacking, the tailings solidified body is basically not affected by other external forces except its own gravity, and the compaction degree is less than that of the consolidated body for filling. Moreover, the surface tailings solidified body is greatly affected by the environmental climate, which may lead to problems such as weathering and cracking. Therefore, the tailings stack has higher requirements for the strength of the consolidated body. In addition to developing a composite cementitious material with greater strength as the solidifying material, the mixing uniformity of the tailings slurry and the solidifying material also plays an important role in the strength of the consolidated body, and becomes one of the key factors for the success of surface stacking of tailings.

[0006] Therefore, how to provide a device for preparing modified thickened full tailings mortar that can effectively improve the mixing uniformity of the tailings slurry and the solidifying material is one of the technical problems that need to be solved by those skilled in the art. Summary of the Invention

[0007] The object of the present invention is to provide a modified concentrated full-tail mortar preparation device, which can effectively improve the mixing uniformity of the tail mortar and the solidifying material.

[0008] To achieve the above object, the present invention provides the following technical solutions:

[0009] The present invention provides a modified concentrated full-tail mortar preparation device, including a stirring barrel, a first stirring blade assembly, a blade assembly, a double-ring feeding and dosing assembly, and a negative-pressure feeding mechanism;

[0010] Both the first stirring blade assembly and the blade assembly are installed in the stirring barrel to stir the materials. The first stirring blade assembly is located above the blade assembly, and the first stirring blade assembly is used to tumble and mix the materials upward.

[0011] Both the double-ring feeding and dosing assembly and the negative-pressure feeding mechanism are installed on the stirring barrel and are both located above the first stirring blade assembly. The double-ring feeding and dosing assembly has a slurry outlet and a liquid solidifying material outlet, and the negative-pressure feeding mechanism has a powder solidifying material outlet. There is an included angle between the orientations of any two of the slurry outlet, the liquid solidifying material outlet, and the powder solidifying material outlet, so that the materials ejected from each can impact and mix.

[0012] Further, the blade assembly includes at least one second stirring blade assembly and at least one third stirring blade assembly, and the second stirring blade assembly and the third stirring blade assembly are alternately distributed along the direction from the top to the bottom of the stirring barrel;

[0013] The second stirring blade assembly is used to tumble the mixed materials upward, and the third stirring blade assembly is used to tumble the mixed materials downward.

[0014] Further, the top end of the blade assembly is configured as the second stirring blade assembly, and the bottom end of the blade assembly is configured as the third stirring blade assembly.

[0015] Further, the double-ring feeding and dosing assembly includes a tail mortar conveying ring pipe and a liquid solidifying material conveying ring pipe located below the tail mortar conveying ring pipe. Both the tail mortar conveying ring pipe and the liquid solidifying material conveying ring pipe are connected to the inner wall of the stirring barrel and are both perpendicular to the axial direction of the stirring barrel. The tail mortar conveying ring pipe is provided with at least one slurry outlet, and the liquid solidifying material conveying ring pipe is provided with at least one liquid solidifying material outlet.

[0016] Further, both the tail mortar conveying ring pipe and the liquid solidifying material conveying ring pipe have an integral structure with the stirring barrel.

[0017] Furthermore, the negative pressure feeding mechanism includes a feeding component and a material pipe communicated with the feeding component;

[0018] The feeding component is installed outside the mixing barrel;

[0019] Both ends of the material pipe extend into the mixing barrel, and the end of the material pipe is the powder solidifying material outlet, and the powder solidifying material outlet is located above the slurry outlet and the liquid solidifying material outlet.

[0020] Furthermore, the slurry outlet, the liquid solidifying material outlet and the powder solidifying material outlet are all configured to be two;

[0021] Along the axial projection of the mixing barrel, the two slurry outlets, the two liquid solidifying material outlets and the two powder solidifying material outlets are evenly spaced around the axis of the mixing barrel.

[0022] Furthermore, the mixing barrel includes a barrel body, a driving component and a rotating shaft;

[0023] The rotating shaft extends into the barrel body and is rotatably connected with the barrel body, and the first stirring blade assembly and the blade assembly are both installed on the rotating shaft;

[0024] The driving component is installed outside the barrel body, and the driving component is rotationally connected with the rotating shaft to drive the rotating shaft to rotate relative to the barrel body.

[0025] Furthermore, there is a discharge pipe on the outer wall of the bottom of the barrel body, and a convex bottom cone structure protrudes from the bottom wall of the barrel body.

[0026] Furthermore, it further includes a first pump body, a second pump body and a control module;

[0027] Both the first pump body and the second pump body are connected to the double-ring feeding and dosing component. The first pump body is used to pump tailings slurry into the double-ring feeding and dosing component, and the second pump body is used to pump liquid solidifying material into the double-ring feeding and dosing component;

[0028] The control module is electrically connected to the first pump body, the second pump body, the negative pressure feeding mechanism, the driving component and the discharge pipe to control the working states of the first pump body, the second pump body, the negative pressure feeding mechanism, the driving component and the discharge pipe.

[0029] The modified concentrated full-tailings slurry preparation device provided by the present invention can produce the following beneficial effects:

[0030] Compared with the prior art, in the modified concentrated whole tailings slurry preparation device provided by the present invention, there is an angle between the directions of any two of the slurry outlet, the liquid solidification material outlet and the powder solidification material outlet, so that the materials sprayed out from each other are offset and mixed, and each material falls on the first stirring blade assembly and is rolled upward and dispersed by the rotating first stirring blade assembly, forming an offset mixing and stirring zone above the first stirring blade assembly, and then the mixed materials are further stirred by the blade assembly, effectively improving the uniformity of mixing between the tailings slurry and the solidification material. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0032] Figure 1 A schematic structural diagram of a modified concentrated whole tailings slurry preparation device provided in an embodiment of the present invention;

[0033] Figure 2 A distribution diagram of the slurry outlet, the liquid solidification material outlet and the powder solidification material outlet along the axial projection of the mixing barrel provided in an embodiment of the present invention;

[0034] Figure 3 A distribution diagram of a slurry outlet, a liquid solidification material outlet, and a powder solidification material outlet along the radial projection of a mixing barrel provided in an embodiment of the present invention;

[0035] Figure 4 Schematic diagram of the coordinate system for calculating the slurry outlet deflection angle provided in an embodiment of the present invention.

[0036] Icons: 1-mixing barrel; 11-barrel body; 111-discharging pipe; 112-raised bottom cone structure; 12-rotating shaft; 13-motor; 14-convex belt; 2-first mixing blade assembly; 3-blade assembly; 31-second mixing blade assembly; 32-third mixing blade assembly; 4-double-ring feeding and dosing assembly; 41-tailing slurry conveying ring pipe; 411-slurry outlet; 42-liquid solidifying material conveying ring pipe; 421-liquid solidifying material outlet; 5-negative pressure feeding mechanism; 51-feeding assembly; 52-material pipe; 521-powder solidifying material outlet; 6-first pump body; 7-second pump body; 8-control module. DETAILED DESCRIPTION

[0037] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0038] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0039] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0040] The specific implementation of the present invention is described in detail below in conjunction with the accompanying drawings. It should be understood that the specific implementation described here is only used to illustrate and explain the present invention, and is not used to limit the present invention.

[0041] The embodiment of the first aspect of the present invention is to provide a modified concentrated whole tailings slurry preparation device, such as Figure 1 and Figure 2 As shown, it includes a mixing barrel 1, a first mixing blade assembly 2, a blade assembly 3, a double-ring feeding and dosing assembly 4 and a negative pressure feeding mechanism 5; the first mixing blade assembly 2 and the blade assembly 3 are both installed in the mixing barrel 1 to mix the materials, the first mixing blade assembly 2 is located above the blade assembly 3, and the first mixing blade assembly 2 is used to roll upward to mix the materials; the double-ring feeding and dosing assembly 4 and the negative pressure feeding mechanism 5 are both installed in the mixing barrel 1, and are both located above the first mixing blade assembly 2, the double-ring feeding and dosing assembly 4 has a slurry outlet 411 and a liquid solidifying material outlet 421, the negative pressure feeding mechanism 5 has a powder solidifying material outlet 521, and there is an angle between the directions of any two of the slurry outlet 411, the liquid solidifying material outlet 421 and the powder solidifying material outlet 521, so that the materials ejected from each are offset and mixed.

[0042] The materials in the stirring tank 1 may include the slurry discharged from the slurry outlet 411, the liquid curing material discharged from the liquid curing material outlet 421, and the powder curing material discharged from the powder curing material outlet 521. During operation, since there is an included angle between the orientations of any two of the slurry outlet 411, the powder curing material outlet 521, and the liquid curing material outlet 421, when the liquid curing material and the powder curing material are mixed, they generate a counterflush, and each material falls on the first stirring blade assembly 2 and is tumbled and dispersed upward by the rotating first stirring blade assembly 2. Therefore, a counterflush mixing and stirring area is formed above the first stirring blade assembly 2, and the blade assembly 3 stirs the mixed materials below the first stirring blade assembly 2.

[0043] The following is a specific description of the first stirring blade assembly 2:

[0044] The first stirring blade assembly 2 includes multiple blades evenly distributed around an axis, specifically, it can be two, three, four, etc. Each blade in the first stirring blade assembly 2 is inclined. Assuming that in a top view, the rotation direction of the first stirring blade assembly 2 is clockwise, then along the counterclockwise direction, each blade extends obliquely towards the top of the stirring tank 1, so that during the stirring process, when the first stirring blade assembly 2 is regarded as stationary, each material rotates counterclockwise relative to the blade. Since the height of the blade gradually increases along the counterclockwise direction, the blade gives each material a lifting force, driving each material to tumble upward.

[0045] Specifically, the first stirring blade assembly 2 can be a paddle blade.

[0046] The following is a specific description of the blade assembly 3:

[0047] The blade assembly 3 includes at least one second stirring blade assembly 31 and at least one third stirring blade assembly 32. The second stirring blade assembly 31 and the third stirring blade assembly 32 are alternately distributed along the direction from the top to the bottom of the stirring tank 1; the second stirring blade assembly 31 is used to tumble the mixed materials upward, and the third stirring blade assembly 32 is used to tumble the mixed materials downward.

[0048] The second stirring blade assembly 31 tumbles the mixed materials upward for mixing, and the third stirring blade assembly 32 tumbles the mixed materials downward for mixing. Since the second stirring blade assembly 31 and the third stirring blade assembly 32 are alternately distributed, the upward-tumbled mixed materials and the downward-tumbled mixed materials collide with each other in the stirring tank 1, forming a turbulent stirring area, enhancing the turbulence intensity of the flow field in the device, and effectively improving the mixing uniformity.

[0049] In at least one embodiment, the top end of the blade assembly 3 is configured as the second stirring blade assembly 31, and the bottom end of the blade assembly 3 is configured as the third stirring blade assembly 32, so as to fully make the various materials in the stirring barrel 1 collide with each other.

[0050] Take Figure 1 as an example for specific illustration. The blade assembly 3 includes a second stirring blade assembly 31 and a third stirring blade assembly 32. The second stirring blade assembly 31 is located above the third stirring blade assembly 32.

[0051] The structure of the second stirring blade assembly 31 is similar to that of the first stirring blade assembly 2. For the sake of saving space, it will not be elaborated in detail here. Similarly, the inclination directions of the blades in the third stirring blade assembly 32 are opposite to those of the blades in the second stirring blade assembly 31, that is, along the counterclockwise direction, each blade extends obliquely towards the bottom of the stirring barrel 1.

[0052] The following is a specific description of the double-ring feeding and dosing assembly 4:

[0053] As Figure 1 shown, the double-ring feeding and dosing assembly 4 includes a tail mortar conveying ring pipe 41 and a liquid curing material conveying ring pipe 42 located below the tail mortar conveying ring pipe 41. The tail mortar conveying ring pipe 41 and the liquid curing material conveying ring pipe 42 are both connected to the inner wall of the stirring barrel 1 and are both perpendicular to the axis of the stirring barrel 1. The tail mortar conveying ring pipe 41 is provided with at least one slurry outlet 411, and the liquid curing material conveying ring pipe 42 is provided with at least one liquid curing material outlet 421.

[0054] Since the tail mortar conveying ring pipe 41 for discharging slurry and the liquid curing material outlet 421 for discharging liquid curing material are arranged on two different ring pipes, it is more convenient for the operators to control the discharge flow rates of the slurry and the liquid curing material respectively.

[0055] Specifically, the tail mortar conveying ring pipe 41 and the liquid curing material conveying ring pipe 42 are arranged one above the other and are in close contact, and can be regarded as being on the same level.

[0056] In some embodiments, both the tail mortar conveying ring pipe 41 and the liquid curing material conveying ring pipe 42 have an integral structure with the stirring barrel 1, and the tail mortar conveying ring pipe 41 and the liquid curing material conveying ring pipe 42 can be directly formed on the stirring barrel 1.

[0057] In some embodiments, as Figure 1As shown in the figure, the above-mentioned modified concentrated tailings mortar preparation device further includes a first pump body 6 and a second pump body 7. Both the first pump body 6 and the second pump body 7 are arranged outside the stirring barrel 1 and are connected to the double-ring feeding and dosing assembly 4 through pipelines passing through the stirring barrel 1. The first pump body 6 is connected to the tailings mortar conveying ring pipe 41 in the double-ring feeding and dosing assembly 4 for pumping tailings mortar into the double-ring feeding and dosing assembly 4. The second pump body 7 is connected to the liquid solidifying material conveying ring pipe 42 in the double-ring feeding and dosing assembly 4 for pumping liquid solidifying material into the double-ring feeding and dosing assembly 4. Operators can control the flow rates of the tailings mortar and the liquid solidifying material by controlling the working states of the first pump body 6 and the second pump body 7, and the control can be manual or electric control.

[0058] The following specifically describes the negative-pressure feeding mechanism 5:

[0059] As Figure 1 shown, the negative-pressure feeding mechanism 5 includes a feeding assembly 51 and a material pipe 52 communicated with the feeding assembly 51. The feeding assembly 51 is installed outside the stirring barrel 1. Both ends of the material pipe 52 extend into the stirring barrel 1, and the end of the material pipe 52 is a powder solidifying material outlet 521, and the powder solidifying material outlet 521 is located above the slurry outlet 411 and the liquid solidifying material outlet 421.

[0060] During use, the powder solidifying material enters the feeding assembly through negative pressure, and then the powder solidifying material falls into the material pipe 52 by its own weight. The spiral conveying structure in the material pipe 52 discharges the powder solidifying material from the powder solidifying material outlet 521 into the stirring barrel 1. Since the powder solidifying material outlet 521 is located above the slurry outlet 411 and the liquid solidifying material outlet 421, the powder solidifying material will produce a counterflush with the slurry and the liquid solidifying material during the falling process, so as to carry out preliminary mixing.

[0061] Among them, the feeding assembly 51 can adopt an existing negative-pressure feeder. To save space, its specific structure will not be described in detail.

[0062] In addition, the material pipe 52 includes a straight section and bent sections connected to both ends of the straight section. The straight section is located above the stirring barrel 1, and the bent sections extend into the stirring barrel 1 from the outside of the stirring barrel 1, and their ends form the powder solidifying material outlet 521. The end of the bent section extending into the stirring barrel 1 extends obliquely downward to produce a strong counterflush effect.

[0063] The following specifically describes the stirring barrel 1:

[0064] In some embodiments, as Figure 1As shown, the stirring barrel 1 includes a barrel body 11, a driving assembly, and a rotating shaft 12; the rotating shaft 12 extends into the barrel body 11 and is rotatably connected to the barrel body 11, and the first stirring blade assembly 2 and the blade assembly 3 are both installed on the rotating shaft 12; the driving assembly is installed outside the barrel body 11, and the driving assembly is rotationally connected to drive the rotating shaft 12 to rotate relative to the barrel body 11.

[0065] It should be noted that any structure capable of driving the rotating shaft 12 to rotate relative to the barrel body 11 can be the driving assembly mentioned in the above embodiments. For example: as Figure 1 shown, the driving assembly includes a motor 13 and a conveyor belt 14, the motor 13 and the rotating shaft 12 are both connected to the conveyor belt 14, and the conveyor belt 14 is used to transmit the power of the motor 13 to the rotating shaft 12; the driving assembly can also include a rotating motor and a gear transmission structure, the rotating motor and the rotating shaft 12 are both connected to the gear transmission structure, and the gear transmission structure transmits the power of the rotating motor to the rotating shaft 12; the driving assembly can also include a rotating motor directly connected to the rotating shaft 12, and so on.

[0066] In some embodiments, a discharge pipe 111 is provided on the outer wall of the bottom of the barrel body 11, and a convex bottom cone structure 112 protrudes inside the bottom wall of the barrel body 11.

[0067] The setting of the convex bottom cone structure 112 can cause the mixture at the bottom of the barrel body 11 to gather towards the edge of the bottom of the barrel body 11, which is beneficial to the discharge of the mixture from the discharge pipe 111.

[0068] The following specifically describes the number and positional relationship of the slurry outlet 411, the liquid curing material outlet 421, and the powder curing material outlet 521:

[0069] In some embodiments, the slurry outlet 411, the liquid curing material outlet 421, and the powder curing material outlet 521 are all configured to be two; along the axial projection of the stirring barrel 1, the two slurry outlets 411, the two liquid curing material outlets 421, and the two powder curing material outlets 521 are evenly spaced around the axis of the stirring barrel 1.

[0070] The above distribution method can enable each material to be more fully counter-flushed and mixed, achieving a better mixing effect.

[0071] Taking Figure 2 and Figure 3 as examples for specific description, the two slurry outlets 411 are spaced 180°, the two liquid curing material outlets 421 are spaced 180°, the two powder curing material outlets 521 are on the same horizontal plane and spaced 180°, and along the axial projection of the stirring barrel 1, the adjacent two outlets are spaced 60°. The impact area of the circulating flow in the counter-flushing mixing area deviates from the axis, forming an eccentric counter-flushing dosing method.

[0072] Combined with the diameter of the barrel body 11, the vertical distance between the first stirring blade assembly 2 and each outlet and the ejection direction of the slurry are determined by theoretical calculation when the slurry is added at a certain ejection speed, so as to form a counter-flushing feeding method for the tail mortar and the solidifying material, which is conducive to the dispersion and uniform mixing of the materials.

[0073] As Figure 4 shown, a three-dimensional coordinate system x-axis, y-axis and z-axis are established with a certain slurry outlet 411 as the origin. The inner diameter 2R of the barrel body 11 is 2000 mm, the diameter of the rotating shaft 12 is 100 mm, the length r of the first stirring blade assembly 2 is 700 mm, the height of the counter-flushing mixing and stirring area (the distance from the axis of the first stirring blade assembly 2 to the top of the barrel body 11) is 600 mm, the height of the turbulent mixing and stirring area (the distance from the axis of the first stirring blade assembly 2 to the vertex of the convex bottom cone structure 112) is 1200 mm, the height h of the plane where the slurry outlet 411 is located from the plane of the axis of the first stirring blade assembly 2 is about 400 mm, the distance between the second stirring blade assembly 31 and the third stirring blade assembly 32 is 600 mm, and the distance from the third stirring blade assembly 32 to the vertex of the convex bottom cone structure 112 is about 300 mm; the rotation speed of the rotating shaft 12 is 150 r / min. In the top view, the rotating shaft 12 rotates clockwise.

[0074] Set the position where the slurry falls on the first stirring blade assembly 2 to be about 2 / 3 of the total length of the first stirring blade assembly 2 from the axis of the first stirring blade assembly 2, and set it at 500 mm, that is, m = 500 mm;

[0075] Set the horizontal ejection speed ν0 of the slurry to be 3 m / s. According to the formula for the vertical displacement of free fall:

[0076] S = (gt 2 ) / 2

[0077] The time t for the slurry to be ejected and fall to the plane where the first stirring blade assembly 2 is located can be calculated as t = 0.286 s;

[0078] Then the horizontal distance l of the slurry ejection is l = ν0t = 857 mm. Therefore, the angle θ is calculated as:

[0079] sinθ = m / l

[0080] Substituting the data, we can get θ = 35.7°.

[0081] At this ejection speed and deflection angle, the slurry falling on the first stirring blade assembly 2 is dispersed by the rotating first stirring blade assembly 2. When the powder solidifying material and the liquid solidifying material are mixed with it at similar ejection speeds and deflection angles at different positions, the uniformity of the slurry mixing can be further improved and the time for the slurry to be uniformly mixed can be shortened.

[0082] In some embodiments, to facilitate the operator's control of the flow rates of the slurry, liquid solidifying material, and powder solidifying material, and also to facilitate the operator's control of the working state of the mixing barrel 1, the above-mentioned modified concentrated full-tail mortar preparation device further includes a control module 8; the control module 8 is electrically connected to the first pump body 6, the second pump body 7, the negative-pressure feeding mechanism 5, the driving assembly, and the discharge pipe 111 to control the working states of the first pump body 6, the second pump body 7, the negative-pressure feeding mechanism 5, the driving assembly, and the discharge pipe 111.

[0083] Specifically, the control module 8 can control the flow rate of the slurry in the tail mortar conveying loop pipe 41 pumped into the barrel 11 by the first pump body 6, the control module 8 can control the flow rate of the liquid solidifying material in the liquid solidifying material conveying loop pipe 42 pumped into the barrel 11 by the second pump body 7, the control module 8 can control the flow rate of the powder solidifying material pumped into the barrel 11 by the negative-pressure feeding mechanism 5, the control module 8 can control the rotational speed output by the driving assembly, and the control module 8 can control the opening and closing of the valve on the discharge pipe 111.

[0084] The control module 8 realizes the quantitative addition of the slurry and the solidifying material and the one-key start and stop of the device, which is more convenient for the operator to operate.

[0085] Among them, the control module 8 can be a computer terminal or a control box and other structures.

[0086] In summary, the modified concentrated full-tail mortar preparation device provided by the above embodiments has the following advantages:

[0087] 1. There is an included angle between the orientations of any two of the slurry outlet 411, the liquid solidifying material outlet 421, and the powder solidifying material outlet 521, so that the ejected materials of each can be counter-jet mixed. Each material falls on the first stirring blade assembly 2 and is tumbled and dispersed upward by the rotating first stirring blade assembly 2, forming a counter-jet mixing and stirring area above the first stirring blade assembly 2. Subsequently, the mixed material is further stirred by the blade assembly 3, effectively improving the mixing uniformity of the tail mortar and the solidifying material;

[0088] 2. The second stirring blade assembly 31 makes the mixed material tumble upward for mixing, and the third stirring blade assembly 32 makes the mixed material tumble downward for mixing. Since the second stirring blade assembly 31 and the third stirring blade assembly 32 are alternately distributed, the upward-tumbled mixed material and the downward-tumbled mixed material collide with each other in the mixing barrel 1, forming a turbulent stirring area, enhancing the turbulence intensity of the internal flow field of the device, and effectively improving the mixing uniformity;

[0089] 3. The bottom wall of the barrel 11 is convex with a raised bottom cone structure 112, which makes the mixed material at the bottom of the barrel 11 gather towards the bottom edge of the barrel 11, thus facilitating the discharge of the mixed material from the discharge pipe 111;

[0090] 4. The control module 8 realizes the quantitative addition of slurry and solidifying materials and the one-key start and stop of the device, which is more convenient for the operators to operate.

[0091] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A modified concentrated full-tailings mortar preparation device, characterized in that, It includes a stirring barrel (1), a first stirring blade assembly (2), a blade assembly (3), a double-ring feeding and dosing assembly (4) and a negative-pressure feeding mechanism (5); The first stirring blade assembly (2) and the blade assembly (3) are both installed inside the stirring barrel (1) to stir the materials. The first stirring blade assembly (2) is located above the blade assembly (3), and the first stirring blade assembly (2) is used to tumble and mix the materials upward; The double-ring feeding and dosing assembly (4) and the negative-pressure feeding mechanism (5) are both installed on the stirring barrel (1) and are both located above the first stirring blade assembly (2). The double-ring feeding and dosing assembly (4) has a slurry outlet (411) and a liquid curing material outlet (421), and the negative-pressure feeding mechanism (5) has a powder curing material outlet (521). An included angle exists between the orientations of any two of the slurry outlet (411), the liquid curing material outlet (421) and the powder curing material outlet (521) so that the materials ejected from each can impact and mix; The double-ring feeding and dosing assembly (4) includes a tail mortar conveying ring pipe (41) and a liquid curing material conveying ring pipe (42) located below the tail mortar conveying ring pipe (41). The tail mortar conveying ring pipe (41) and the liquid curing material conveying ring pipe (42) are both connected to the inner wall of the stirring barrel (1) and are both perpendicular to the axial direction of the stirring barrel (1). The tail mortar conveying ring pipe (41) is provided with at least one slurry outlet (411), and the liquid curing material conveying ring pipe (42) is provided with at least one liquid curing material outlet (421); The tail mortar conveying ring pipe (41) and the liquid curing material conveying ring pipe (42) are arranged vertically one above the other and are in close contact.

2. The modified concentrated full-tailings mortar preparation device according to claim 1, characterized in that, The blade assembly (3) includes at least one second stirring blade assembly (31) and at least one third stirring blade assembly (32). The second stirring blade assembly (31) and the third stirring blade assembly (32) are alternately distributed along the direction from the top to the bottom of the stirring barrel (1); The second stirring blade assembly (31) is used to tumble the mixed materials upward, and the third stirring blade assembly (32) is used to tumble the mixed materials downward.

3. The modified concentrated full-tailings mortar preparation device according to claim 2, characterized in that, The top end of the blade assembly (3) is configured as the second stirring blade assembly (31), and the bottom end of the blade assembly (3) is configured as the third stirring blade assembly (32).

4. The modified concentrated full-tailings mortar preparation device according to claim 1, characterized in that, Both the tail mortar conveying ring pipe (41) and the liquid curing material conveying ring pipe (42) have an integral structure with the stirring barrel (1).

5. The modified concentrated full-tailings mortar preparation device according to claim 1, characterized in that, The negative-pressure feeding mechanism (5) includes a feeding component (51) and a material pipe (52) communicated with the feeding component (51); The feeding component (51) is installed outside the stirring barrel (1); Both ends of the material pipe (52) extend into the stirring barrel (1). The end of the material pipe (52) is the powder curing material outlet (521), and the powder curing material outlet (521) is located above the slurry outlet (411) and the liquid curing material outlet (421).

6. The modified concentrated full-tailings mortar preparation device according to claim 1, characterized in that, The slurry outlet (411), the liquid curing material outlet (421), and the powder curing material outlet (521) are all configured to be two; In the axial projection along the stirring barrel (1), the two slurry outlets (411), the two liquid curing material outlets (421), and the two powder curing material outlets (521) are evenly spaced around the axis of the stirring barrel (1).

7. The modified concentrated full-tailings mortar preparation device according to any one of claims 1-6, characterized in that, The stirring barrel (1) includes a barrel body (11), a driving assembly, and a rotating shaft (12); The rotating shaft (12) extends into the barrel body (11) and is rotatably connected to the barrel body (11). The first stirring blade assembly (2) and the blade assembly (3) are both installed on the rotating shaft (12); The driving assembly is installed outside the barrel body (11), and the driving assembly is rotationally connected to drive the rotating shaft (12) to rotate relative to the barrel body (11).

8. The modified concentrated full-tailings mortar preparation device according to claim 7, characterized in that, The outer wall of the bottom of the barrel body (11) has a discharge pipe (111), and a convex bottom cone structure (112) protrudes from the bottom wall of the barrel body (11).

9. The modified concentrated full-tailings mortar preparation device according to claim 8, characterized in that, It further includes a first pump body (6), a second pump body (7), and a control module (8); Both the first pump body (6) and the second pump body (7) are connected to the double-ring feeding and dosing assembly (4). The first pump body (6) is used to pump tail mortar into the double-ring feeding and dosing assembly (4), and the second pump body (7) is used to pump liquid curing material into the double-ring feeding and dosing assembly (4); The control module (8) is electrically connected to the first pump body (6), the second pump body (7), the negative pressure feeding mechanism (5), the driving assembly, and the discharge pipe (111) to control the working states of the first pump body (6), the second pump body (7), the negative pressure feeding mechanism (5), the driving assembly, and the discharge pipe (111).

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