Waste hydrochloric acid dissolving device for recycling tailings and dissolving method thereof

Abstract

The invention relates to the technical field of tailing treatment, in particular to a waste hydrochloric acid dissolving device for tailing reutilization and a dissolving method.The waste hydrochloric acid dissolving device for tailing reutilization comprises a dissolving bottle installed on a bearing frame, and a stirring device capable of mixing and stirring substances added into the dissolving bottle is installed in the dissolving bottle; a dissolution acceleration mechanism is further arranged on the dissolution bottle and comprises a ventilation assembly and a switching assembly, the ventilation assembly comprises a ball valve arranged on the dissolution bottle, the ball valve communicates with the interior of the dissolution bottle through a first gas conveying pipe and a second gas conveying pipe, and a communicating piece is installed in the ball valve; one of the first gas conveying pipe and the second gas conveying pipe can be communicated with the dissolving bottle through the communicating piece; the switching assembly comprises a driving structure and a triggering structure, and in the rotating process of the stirring part, the driving structure can drive the triggering structure to drive the communicating part to rotate rapidly, so that the communicating state of the first gas conveying pipe and the second gas conveying pipe with the dissolving bottle is changed.

Description

Technical Field

[0001] The present invention relates to the technical field of tailings treatment, and specifically to a waste hydrochloric acid dissolving device for tailings reuse and its dissolving method. Background Art

[0003] In the context of the global shortage of mineral resources supply, there are business opportunities for secondary utilization in the residues and tailings remaining after the processing and utilization of mineral resources. China is a major mining country. Developing and utilizing the large amount of tailings accumulated over a long time can not only "turn waste into treasure" but also effectively alleviate the resource and environmental pressures.

[0004] Tailings are the "waste" discharged by mining enterprises under certain technical and economic conditions, but at the same time, they are potential secondary resources. When technical and economic conditions permit, they can be effectively developed again.

[0005] Taking pyrite as an example, it is a polysulfide mineral with the main component of FeS₂. It is a common metal mineral in nature and the most widely distributed sulfide in the earth's crust. Treating pyrite with hydrochloric acid can achieve the efficient recovery and harmless utilization of iron and sulfur resources. However, due to the compact structure of pyrite, hydrochloric acid is difficult to penetrate during the reaction with hydrochloric acid, which leads to a slow reaction rate, a long overall reaction time, and it is also difficult for the process of resource utilization. Summary of the Invention

[0006] The purpose of the present invention is to provide a waste hydrochloric acid dissolving device for tailings reuse and its dissolving method to solve the problems raised in the above background art.

[0007] To achieve the above purpose, the present invention provides the following technical solutions: A waste hydrochloric acid dissolving device for tailings reuse, comprising: a dissolving bottle installed on a support bracket, a top cover is provided on the dissolving bottle, and a stirring member is rotatably installed in the dissolving bottle in a sealed manner. The stirring member can mix and stir the substances added into the dissolving bottle; A dissolving acceleration mechanism is further provided on the dissolving bottle. The dissolving acceleration mechanism includes a ventilation component and a switching component. The ventilation component includes a ball valve provided on the dissolving bottle. The ball valve is communicated with the inside of the dissolving bottle through a first air pipe and a second air pipe, and a connecting member is rotatably installed in the ball valve in a sealed manner. The connecting member can connect one of the first air pipe and the second air pipe with the dissolving bottle; The switching component includes a driving structure and a triggering structure. The driving structure is connected to the stirring member. During the rotation of the stirring member, the driving structure can drive the triggering structure to act, thereby driving the connecting member to rotate quickly, so as to change the connection state between the first air pipe and the second air pipe and the dissolving bottle.

[0008] The waste hydrochloric acid dissolving device for tailings reuse as described above: The connecting member includes a valve core that is hermetically and rotatably installed in the ball valve. A connecting pipe and a rotating shaft are provided on the valve core. The connecting pipe and the rotating shaft are coaxial, and a through hole is further formed on the valve core, and the through hole communicates with the connecting pipe.

[0009] The waste hydrochloric acid dissolving device for tailings reuse as described above: The ventilation assembly further includes a pump machine provided on the dissolving bottle. One end of the pump machine is connected with an air inlet pipe, and the other end is connected with an air outlet pipe. The air outlet pipe is hermetically and rotatably connected with the connecting pipe.

[0010] The waste hydrochloric acid dissolving device for tailings reuse as described above: The driving structure includes a reciprocating member and a driving member. The driving member includes a pulley rotatably installed on the dissolving bottle. There are two sets of pulleys, and the two sets of pulleys are connected by a belt drive. A protrusion is provided on the side of the belt away from the dissolving bottle.

[0011] The waste hydrochloric acid dissolving device for tailings reuse as described above: The reciprocating member includes a reciprocating plate slidably arranged on the dissolving bottle. A sliding groove is formed on the side of the reciprocating plate facing the dissolving bottle. The protrusion is slidably arranged in the sliding groove, and a triggering member is further provided on the reciprocating plate.

[0012] The waste hydrochloric acid dissolving device for tailings reuse as described above: The triggering member includes a moving plate fixedly connected to the reciprocating plate. A triggering plate is provided on the moving plate, and there are two sets of triggering plates symmetrically arranged along the length direction of the moving plate.

[0013] The waste hydrochloric acid dissolving device for tailings reuse as described above: The triggering structure includes an elastic moving member and a locking member. The elastic moving member includes a plugging cylinder slidably arranged on the dissolving bottle. A spring is slidably arranged in the plugging cylinder. One end of the spring abuts against the bottom of the plugging cylinder, and the other end abuts against a plugging rod slidably arranged in the plugging cylinder. A pulley is rotatably installed at the end of the plugging rod away from the spring. The pulley cooperates with the locking member, and a toothed plate is provided at the end of the plugging cylinder away from the pulley. The toothed plate cooperates with a gear coaxially arranged on the rotating shaft.

[0014] The waste hydrochloric acid dissolving device for tailings reuse as described above: The locking member includes a triggering block provided on the dissolving bottle. A first locking groove, a first inclined surface, a second inclined surface, and a second locking groove are provided on the triggering block.

[0015] The waste hydrochloric acid dissolving device for tailings reuse as described above: The stirring member includes a stirring shaft rotatably installed in the dissolving bottle. The stirring shaft is coaxially fixed with one group of the belt pulleys, and the stirring shaft is connected to a driving rod rotatably installed on the dissolving bottle through a linkage belt.

[0016] A method for dissolving waste hydrochloric acid of tailings reuse, using the waste hydrochloric acid dissolving device for tailings reuse as described above, includes the following steps: Step 1: In the initial state, the intake pipe of the pump is connected to the first air pipe. Through the feeding port on the upper cover, an appropriate amount of tailings and hydrochloric acid are added into the dissolving bottle. Step 2: Start the motor. Immediately, the stirring shaft and the pump enter the working state. The continuous rotation of the stirring shaft can accelerate the reaction between the tailings and hydrochloric acid. At the same time, the pump passes oxygen or air into the dissolving bottle through the first air pipe, thereby accelerating the reaction rate. Step 3: Meanwhile, the belt rotates continuously, which can drive the reciprocating plate and the moving plate to slide reciprocally. During the reciprocating sliding of the moving plate, the trigger plate, in cooperation with the locking member, can drive the trigger structure to act quickly, thereby forcing the connecting member to rotate a certain angle, so that the intake pipe is connected to the second air pipe and oxygen is passed into the dissolving bottle, so that the retention time of oxygen in the liquid becomes longer, thereby further accelerating the reaction rate in the dissolving bottle.

[0017] Compared with the prior art, the beneficial effects of the present invention are: By setting multiple groups of feeding ports and adopting the method of feeding in different areas, the reaction of reactants in the feeding ports can be avoided. By setting the ventilation assembly and continuously passing oxygen into the dissolving bottle, the bubbles formed by oxygen in the solution can disturb the solution and promote the diffusion of reactants. For pyrite particles with a relatively large density, passing oxygen can shorten the thickness of the mass transfer boundary layer and accelerate the dissolution rate of pyrite. At the same time, under the cooperation of the switching assembly, the valve core in the ball valve can rotate and switch, realizing the periodic switching of the connection state between the first air pipe and the second air pipe, so that oxygen flows into the dissolving bottle alternately in the tangential direction, forming a periodic eddy current, thereby increasing the contact area between oxygen, hydrochloric acid, and pyrite, improving the utilization rate of oxygen and the mixing uniformity, and enhancing the reaction rate of oxidation. And during the switching process of the oxygen flow direction, the eddy current opposite to the stirring direction of the stirring shaft can prolong the residence time of oxygen in the liquid, enabling it to fully participate in the oxidation reaction of pyrite and hydrochloric acid, reducing the loss of oxygen escape, and further improving the utilization rate of oxygen. At the same time, during the process of passing oxygen into the dissolving bottle, the stirring shaft can synchronously stir hydrochloric acid and pyrite, and further accelerate the reaction process of pyrite and hydrochloric acid through mechanical enhanced mass transfer, thereby shortening the reaction time. Description of the Drawings

[0018] Figure 1 It is a schematic structural diagram of a waste hydrochloric acid dissolving device for tailings reuse.

[0019] Figure 2 It is a schematic structural diagram of the bottom of the dissolving bottle in the waste hydrochloric acid dissolving device for tailings reuse.

[0020] Figure 3 It is a schematic structural diagram of the inside of the dissolving bottle in the waste hydrochloric acid dissolving device for tailings reuse.

[0021] Figure 4 It is a schematic structural diagram of the ventilation component in the waste hydrochloric acid dissolving device for tailings reuse.

[0022] Figure 5 It is a schematic structural diagram of the cooperation between the driving structure and the triggering structure in the waste hydrochloric acid dissolving device for tailings reuse.

[0023] Figure 6 It is a schematic structural diagram of the triggering structure in the waste hydrochloric acid dissolving device for tailings reuse.

[0024] Figure 7 It is a schematic structural diagram of the elastic moving part and the locking part in the waste hydrochloric acid dissolving device for tailings reuse.

[0025] Figure 8 It is a schematic structural diagram of the connection between the valve core and the ball valve in the waste hydrochloric acid dissolving device for tailings reuse.

[0026] Figure 9 It is a schematic structural diagram of the driving structure in the waste hydrochloric acid dissolving device for tailings reuse.

[0027] Figure 10 It is a schematic structural diagram of the driving part in the waste hydrochloric acid dissolving device for tailings reuse.

[0028] Figure 11 It is a schematic structural diagram of the triggering part in the waste hydrochloric acid dissolving device for tailings reuse.

[0029] In the figure: 1, supporting bracket; 2, dissolution bottle; 201, mounting plate; 202, clamping groove; 203, T-shaped groove; 3, upper cover; 301, feed inlet; 4, pump; 401, intake pipe; 402, outlet pipe; 5, ball valve; 501, first gas transmission pipe; 502, second gas transmission pipe; 6, valve core; 601, connecting pipe; 602, rotating shaft; 603, through hole; 7, belt; 701, protruding column; 8, reciprocating plate; 801, sliding groove; 802, clamping rod; 9, moving plate; 901, trigger plate; 10, stirring shaft; 11, toothed plate; 12, gear; 13, trigger block; 1301, first locking groove; 1302, second locking groove; 1303, first inclined surface; 1304, second inclined surface; 14, insertion cylinder; 1401, T-shaped block; 15, spring; 16, insertion rod; 17, pulley; 18, belt pulley; 19, driving rod. Detailed implementation manners

[0030] Various exemplary embodiments, features and aspects of the present application will be described in detail below with reference to the accompanying drawings. The same reference numerals in the drawings denote elements having the same or similar functions. Although various aspects of the embodiments are shown in the drawings, the drawings do not have to be drawn to scale unless otherwise specified.

[0031] The special term "exemplary" here means "serving as an example, embodiment or illustration". Any embodiment described as "exemplary" here does not have to be construed as superior to or better than other embodiments.

[0032] In addition, in order to better illustrate the present application, numerous specific details are given in the following detailed embodiments. Those skilled in the art should understand that the present application can be implemented without some specific details. In some instances, methods, means, and elements well known to those skilled in the art are not described in detail so as to highlight the gist of the present application.

[0033] Please refer to Figures 1 - 11 , in the embodiment of the present invention, a waste hydrochloric acid dissolution device for tailings recycling includes: A stirring member that can mix and stir the substances added into the dissolution bottle 2; a dissolution bottle 2 installed on the supporting bracket 1, with an upper cover 3 provided on the dissolution bottle 2, and a stirring member is rotatably installed in the dissolution bottle 2 in a sealed manner, and the stirring member can mix and stir the substances added into the dissolution bottle 2. Specifically, please refer to Figure 1 , Figure 2 , Figure 3, three groups of feed inlets 301 are provided on the upper cover 3. Different reaction substances can be added into the dissolution bottle 2 through different feed inlets 301. In the present invention, specifically tailings (pyrite) and hydrochloric acid are used. By adopting the method of feeding in different areas, it can be avoided that the reaction substances react in the feed inlet 301, so that various reactants can carry out chemical reactions only after entering the reaction bottle. After the pyrite and hydrochloric acid are added into the dissolution bottle 2, ferrous sulfide in the pyrite reacts with hydrochloric acid to generate ferrous chloride, hydrogen sulfide gas and sulfur elemental precipitate; The existing dissolution bottle 2 is only set as a single storage bottle. After the pyrite and hydrochloric acid enter the dissolution bottle 2, they are all in a static state for reaction. Since pyrite itself is insoluble in hydrochloric acid, the whole reaction time is long, and the efficiency of extracting sulfur elemental is extremely slow.

[0034] A dissolution acceleration mechanism is further provided on the dissolution bottle 2. The dissolution acceleration mechanism includes an air venting component and a switching component. The air venting component includes a ball valve 5 provided on the dissolution bottle 2. The ball valve 5 is internally and communicatively connected to the inside of the dissolution bottle 2 through a first air pipe 501 and a second air pipe 502, and a connecting member is hermetically and rotatably installed in the ball valve 5. The connecting member can connect one of the first air pipe 501 and the second air pipe 502 to the dissolution bottle 2; The connecting member includes a valve core 6 hermetically and rotatably installed in the ball valve 5. A connecting pipe 601 and a rotating shaft 602 are provided on the valve core 6. The connecting pipe 601 is coaxial with the rotating shaft 602, and a through hole 603 is further opened on the valve core 6. The through hole 603 is communicated with the connecting pipe 601; Specifically, a damping sleeve is provided between the valve core 6 and the ball valve 5. At the connecting line of the damping sleeve, the valve core 6 will not rotate relative to the ball valve 5 easily without being driven by an external force, so that the valve core 6 can always maintain the communication state with the first air pipe 501 or the second air pipe 502 without being driven by an external force, so that the pump 4 can continuously introduce oxygen in the oxygen storage tank into the dissolution bottle 2.

[0035] The air venting component further includes a pump 4 provided on the dissolution bottle 2. One end of the pump 4 is connected with an air inlet pipe 401, and the other end is connected with an air outlet pipe 402. The air outlet pipe 402 is hermetically and rotatably connected to the connecting pipe 601; Specifically, please refer to Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 、 Figure 8, the above intake pipe 401 is connected to an oxygen storage tank disposed beside the support bracket 1 (not shown in the figure). Both the first gas transmission pipe 501 and the second gas transmission pipe 502 are inserted into the dissolution flask 2 in a tangential direction. After the pump 4 enters the working state, the pump 4 can pump oxygen in the oxygen storage tank into the dissolution flask 2 through the first gas transmission pipe 501 or the second gas transmission pipe 502; Since both the first gas transmission pipe 501 and the second gas transmission pipe 502 are inserted into the dissolution flask 2 in a tangential direction, when the pump 4 is working, gas can enter the hydrochloric acid liquid along the tangential direction of the dissolution flask 2. Subsequently, a vortex is formed along the wall direction of the dissolution flask 2. During this process, oxygen can act as an oxidant and, under acidic conditions, oxidize ferrous ions to ferric ions, ultimately producing ferric chloride, thereby increasing the dissolution rate of pyrite in hydrochloric acid, shortening the reaction time, and facilitating the rapid production of sulfur; at the same time, the bubbles formed by oxygen in the solution can agitate the solution and promote the diffusion of reactants. For pyrite particles with a relatively large density, introducing oxygen can shorten the thickness of the mass transfer boundary layer and accelerate the dissolution rate of pyrite.

[0036] In addition, by prolonging the retention time of oxygen in hydrochloric acid, the dissolution rate of pyrite can be further increased, thereby shortening the reaction time.

[0037] Further, please refer to Figure 2 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 9 , Figure 10 , Figure 11 , the switching assembly includes a driving structure and a triggering structure. The driving structure is connected to the stirring member. During the rotation of the stirring member, the driving structure can drive the triggering structure to act, thereby driving the connecting member to rotate rapidly, thus changing the connection state between the first gas transmission pipe 501 and the second gas transmission pipe 502 and the dissolution flask 2; The driving structure includes a reciprocating member and a driving member. The driving member includes a pulley 18 rotatably mounted on the dissolution flask 2. There are two sets of pulleys 18, and the two sets of pulleys 18 are connected by a belt 7. A protrusion 701 is provided on the side of the belt 7 away from the dissolution flask 2; The reciprocating member includes a reciprocating plate 8 slidably disposed on the dissolution flask 2. A chute 801 is formed on the side of the reciprocating plate 8 facing the dissolution flask 2. The protrusion 701 is slidably disposed in the chute 801, and a triggering member is further provided on the reciprocating plate 8; Specifically, please refer to Figure 6 , Figure 11, on one side of the reciprocating plate 8 facing the dissolution bottle 2, there are clamping rods 802. Two groups of the clamping rods 802 are symmetrically arranged along the length direction of the reciprocating plate 8. The two groups of the clamping rods 802 are slidably arranged in the clamping grooves 202 opened at the bottom of the dissolution bottle 2. With the cooperation of the clamping grooves 202 and the clamping rods 802, the reciprocating plate 8 can only slide along the length direction of the clamping grooves 202, so as to trigger the triggering structure. When the triggering structure is triggered, the triggering structure can change the connection state of the valve core 6 with the first air delivery pipe 501 and the second air delivery pipe 502, and then change the flow direction of oxygen in the dissolution bottle 2 to increase the contact area between oxygen and the reactants, thereby further improving the reaction efficiency.

[0038] The triggering member includes a moving plate 9 fixedly connected to the reciprocating plate 8. A triggering plate 901 is arranged on the moving plate 9. Two groups of the triggering plates 901 are symmetrically arranged along the length direction of the moving plate 9; The triggering structure includes an elastic moving member and a locking member. The elastic moving member includes a plugging cylinder 14 slidably arranged on the dissolution bottle 2. A spring 15 is slidably arranged in the plugging cylinder 14. One end of the spring 15 abuts against the bottom of the plugging cylinder 14, and the other end abuts against a plugging rod 16 slidably arranged in the plugging cylinder 14. A pulley 17 is rotatably installed at the end of the plugging rod 16 away from the spring 15. The pulley 17 cooperates with the locking member, and a toothed plate 11 is arranged at the end of the plugging cylinder 14 away from the pulley 17. The toothed plate 11 cooperates with a gear 12 coaxially arranged on the rotating shaft 602; Particularly, please refer to Figure 7 , a T-shaped block 1401 is arranged on the above-mentioned plugging cylinder 14. The T-shaped block 1401 is slidably arranged in a T-shaped groove 203 opened at the bottom of the dissolution bottle 2. With the cooperation of the T-shaped groove 203 and the T-shaped block 1401, the plugging cylinder 14 can only slide along the length direction of the T-shaped groove 203; And the above-mentioned spring 15 is always in a compressed state. The compressed spring 15 can force the plugging rod 16 to have a tendency to move towards the locking member and make the pulley 17 contact the locking member. With the cooperation between the locking member and the spring 15, the position of the plugging cylinder 14 can be locked or switched. And during the process of the position switching of the plugging cylinder 14, the toothed plate 11 arranged on the plugging cylinder 14 can enter into a meshing transmission state with the gear 12, so as to drive the gear 12 and the valve core 6 to rotate, thereby changing the connection state of the pump 4 with the first air delivery pipe 501 and the second air delivery pipe 502.

[0039] The locking member includes a trigger block 13 provided on the dissolution bottle 2. A first locking groove 1301, a first inclined surface 1303, a second inclined surface 1304, and a second locking groove 1302 are provided on the trigger block 13. In particular, please refer to Figure 7 , the first locking groove 1301, the first inclined surface 1303, the second inclined surface 1304, and the second locking groove 1302 are symmetrically arranged; The stirring member includes a stirring shaft 10 rotatably installed in the dissolution bottle 2. The stirring shaft 10 is coaxially fixed with one set of the belt pulleys 18, and the stirring shaft 10 is connected to a driving rod 19 rotatably installed on the dissolution bottle 2 through a linkage belt; Specifically, please refer to Figure 2 , Figure 5 , a mounting plate 201 is provided at the bottom of the above-mentioned dissolution bottle 2. A motor is fixedly installed on the mounting plate 201. The output shaft of the motor is coaxially fixed with the driving rod 19. After the motor enters the working state, it can drive the pump 4 to enter the working state synchronously; Combined with the above, in the initial state, the through hole 603 of the valve core 6 communicates with the first air delivery pipe 501. After hydrochloric acid and pyrite are added into the dissolution bottle 2, the motor is started. Immediately afterwards, the output shaft of the motor drives the driving rod 19 to rotate continuously. Subsequently, under the connection of the linkage belt, the stirring shaft 10 can stir the hydrochloric acid and pyrite, thereby accelerating the dissolution rate of pyrite; At the same time, the pump 4 can deliver oxygen into the dissolution bottle 2 through the first air delivery pipe 501. At this time, the oxygen entering the dissolution bottle 2 forms a vortex in the dissolution bottle 2 that is in the same direction as the stirring shaft 10. Under the action of oxygen, the reaction between pyrite and hydrochloric acid can be further accelerated; In addition, when the driving rod 19 rotates, the belt 7 rotates continuously in the same direction. During this process, the protruding column 701 cooperates with the sliding groove 801 to drive the reciprocating plate 8 to move towards the right (refer to Figure 2 for description). During this process, the trigger plate 901 on the left side of the moving plate 9 gradually approaches the insertion cylinder 14. Until the trigger plate 901 contacts the insertion cylinder 14, the moving plate 9 can drive the insertion cylinder 14 to move towards the right. During this process, combined with Figure 2 , Figure 7The description is that the pulley 17 is first separated from the second locking groove 1302, and then slides along the second inclined surface 1304. During this process, the second inclined surface 1304 squeezes the pulley 17, which can force the plug-in rod 16 to retract toward the inside of the plug-in cylinder 14 and further compress the spring 15 until the movable plate 9 drives the plug-in cylinder 14 to cross the symmetry center of the second inclined surface 1304 and the first inclined surface 1303 and contacts the first inclined surface 1303. The spring 15 releases its elastic potential energy, which can force the plug-in cylinder 14 to quickly drive the pulley 17 to slide along the first inclined surface 1303 until the pulley 17 is combined with the first locking groove 1301. During this process, the tooth plate 11 and the gear 12 enter a meshing transmission state, forcing the valve core 6 to rotate a certain angle, resulting in the through hole 6 03 Connect the second air pipe 502 to the pump 4, and then the pump 4 delivers oxygen to the dissolving bottle 2 through the second air pipe 502. At this time, the vortex formed by the oxygen is opposite to the rotation direction of the stirring shaft 10, which can prolong the retention time of oxygen in the hydrochloric acid and fully play the role of an oxidant. In the subsequent process of the moving plate 9 following the reciprocating plate 8 to perform a reverse action, the reciprocating plate 8 can drive the trigger plate 901 on the right side of the moving plate 9 to drive the plug-in cylinder 14 to move toward the left side, until the pulley 17 separates from the first inclined surface 1303 and contacts the second inclined surface 1304, the spring 15 releases the elastic potential energy to drive the pulley 17 to quickly return to the state of being combined with the second locking groove 1302. At this time, the through hole 603 connects the first air pipe 501 to the pump 4; By changing the ventilation direction, the utilization rate of oxygen and the mixing uniformity can be improved, the reaction time can be shortened, and the precipitation of sulfur can be accelerated.

[0040] A method for dissolving waste materials with hydrochloric acid for recycling tailings, using the above-mentioned device for dissolving waste materials with hydrochloric acid for recycling tailings, comprises the following steps: Step 1: In the initial state, the air inlet pipe 401 of the pump 4 is connected to the first air delivery pipe 501, and an appropriate amount of tailings and hydrochloric acid are added into the dissolving bottle 2 through the feed port 301 on the upper cover 3; Step 2: Start the motor, and then the stirring shaft 10 and the pump 4 enter the working state. The continuous rotation of the stirring shaft 10 can accelerate the reaction between the tailings and the hydrochloric acid. At the same time, the pump 4 introduces oxygen or air into the dissolving bottle 2 through the first air pipe 501, thereby accelerating the reaction speed; Step three: At the same time, the belt 7 continues to rotate, which can drive the reciprocating plate 8 and the movable plate 9 to slide back and forth. During the reciprocating sliding of the movable plate 9, the trigger plate 901, with the cooperation of the locking member, can drive the trigger structure to move quickly, thereby forcing the connecting member to rotate a certain angle, so that the air inlet pipe 401 is connected with the second air supply pipe 502, and oxygen is introduced into the dissolving bottle 2, so that the retention time of oxygen in the liquid is prolonged, thereby further accelerating the reaction speed in the dissolving bottle 2.

[0041] For those skilled in the art, it is obvious that the present invention is not limited to the details of the above-described exemplary embodiments, and the present invention can be implemented in other specific forms without departing from the spirit or basic characteristics of the present invention. Therefore, in any aspect, the embodiments should be regarded as exemplary and non-limiting. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be embraced within the present invention. Any reference signs in the claims should not be construed as limiting the claims involved.

[0042] In addition, it should be understood that although this specification is described according to embodiments, not every embodiment only contains an independent technical solution. This narrative way of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A waste hydrochloric acid dissolving device for tailings reuse, characterized in that, include: A dissolving bottle (2) mounted on a support frame (1), the dissolving bottle (2) being provided with an upper cover (3), and a stirring member being rotatably mounted in the dissolving bottle (2), the stirring member being capable of mixing and stirring substances added to the dissolving bottle (2); A dissolving bottle (2) mounted on a support frame (1), the dissolving bottle (2) being provided with an upper cover (3), and a stirring member being rotatably mounted in the dissolving bottle (2), the stirring member being capable of mixing and stirring substances added to the dissolving bottle (2); The dissolution bottle (2) is also provided with a dissolution acceleration mechanism, the dissolution acceleration mechanism comprising a ventilation component and a switching component, the ventilation component comprising a ball valve (5) provided on the dissolution bottle (2), the ball valve (5) being connected to the inside of the dissolution bottle (2) via a first gas pipe (501) and a second gas pipe (502), and a connecting piece being sealingly rotatably mounted inside the ball valve (5), the connecting piece being able to connect one of the first gas pipe (501) and the second gas pipe (502) with the dissolution bottle (2); The switching assembly comprises a driving structure and a triggering structure, wherein the driving structure is connected to the stirring member. During the rotation of the stirring member, the driving structure can drive the triggering structure to drive the connecting member to rotate rapidly, thereby changing the connection state between the first gas supply pipe (501) and the second gas supply pipe (502) and the dissolving bottle (2).

2. The waste hydrochloric acid dissolving device for tailings reuse according to claim 1, wherein, The connecting member comprises a valve core (6) which is sealingly and rotatably mounted in the ball valve (5); a connecting pipe (601) and a rotating shaft (602) are provided on the valve core (6); the connecting pipe (601) and the rotating shaft (602) are coaxial; a through hole (603) is also provided on the valve core (6); the through hole (603) is in communication with the connecting pipe (601).

3. The waste hydrochloric acid dissolving device for tailings reuse according to claim 2, characterized in that, The ventilation assembly further comprises a pump (4) arranged on the dissolving bottle (2); one end of the pump (4) is connected to an air inlet pipe (401), and the other end is connected to an air outlet pipe (402); the air outlet pipe (402) is sealingly and rotatably connected to the connecting pipe (601).

4. A waste hydrochloric acid dissolution device for tailings reuse according to claim 2, characterized in that, The driving structure comprises a reciprocating member and a driving member, wherein the driving member comprises a pulley (18) rotatably mounted on the dissolution bottle (2), wherein two groups of pulleys (18) are provided, and the two groups of pulleys (18) are connected by a belt (7) for transmission, and a protruding column (701) is provided on a side of the belt (7) away from the dissolution bottle (2).

5. The waste hydrochloric acid dissolving device for tailings reuse according to claim 4, characterized in that, The reciprocating member comprises a reciprocating plate (8) slidably arranged on the dissolving bottle (2), a sliding groove (801) is provided on a side of the reciprocating plate (8) facing the dissolving bottle (2), the protruding column (701) is slidably arranged in the sliding groove (801), and a trigger member is also arranged on the reciprocating plate (8).

6. A waste hydrochloric acid dissolving device for tailings reuse according to claim 5, characterized in that, The trigger member comprises a moving plate (9) fixedly connected to the reciprocating plate (8), a trigger plate (901) being arranged on the moving plate (9), and two groups of the trigger plates (901) being symmetrically arranged along the length direction of the moving plate (9).

7. A waste hydrochloric acid dissolving device for tailings reuse according to claim 4, characterized in that, The trigger structure includes an elastic moving member and a locking member. The elastic moving member includes a plugging cylinder (14) slidably arranged on the dissolution bottle (2). A spring (15) is slidably arranged in the plugging cylinder (14). One end of the spring (15) abuts against the bottom of the plugging cylinder (14), and the other end abuts against a plugging rod (16) slidably arranged in the plugging cylinder (14). A pulley (17) is rotatably installed at one end of the plugging rod (16) away from the spring (15). The pulley (17) cooperates with the locking member, and a toothed plate (11) is arranged at one end of the plugging cylinder (14) away from the pulley (17). The toothed plate (11) cooperates with a gear (12) coaxially arranged on the rotating shaft (602).

8. A waste hydrochloric acid dissolution device for tailings reuse according to claim 7, characterized in that, The locking member includes a trigger block (13) arranged on the dissolution bottle (2). The trigger block (13) is provided with a first locking groove (1301), a first inclined surface (1303), a second inclined surface (1304) and a second locking groove (1302).

9. The waste hydrochloric acid dissolving device for tailings reuse according to claim 4, characterized in that, The stirring member includes a stirring shaft (10) rotatably installed in the dissolution bottle (2). The stirring shaft (10) is coaxially fixed with one group of the belt pulleys (18), and the stirring shaft (10) is connected to a driving rod (19) rotatably installed on the dissolution bottle (2) through a linkage belt.

10. A method for hydrochloric acid dissolution of waste materials for tailings reuse, using the waste material hydrochloric acid dissolution device for tailings reuse described in claim 1 above, characterized in that, It includes the following steps: Step 1: In the initial state, the intake pipe (401) of the pump (4) is communicated with the first gas transmission pipe (501). Through the feed inlet (301) of the upper cover (3), an appropriate amount of tailings and hydrochloric acid are added into the dissolution bottle (2). Step 2: Start the motor. Immediately, the stirring shaft (10) and the pump (4) enter the working state. The continuous rotation of the stirring shaft (10) can accelerate the reaction between the tailings and hydrochloric acid. At the same time, the pump (4) passes oxygen or air into the dissolution bottle (2) through the first gas transmission pipe (501), so as to accelerate the reaction speed. Step 3: At the same time, the belt (7) rotates continuously, which can drive the reciprocating plate (8) and the moving plate (9) to slide reciprocally. During the process of the moving plate (9) sliding reciprocally, the trigger plate (901) can drive the trigger structure to act quickly under the cooperation of the locking member, so as to force the connecting member to rotate a certain angle, so that the intake pipe (401) is communicated with the second gas transmission pipe (502), and oxygen is passed into the dissolution bottle (2), so that the retention time of oxygen in the liquid becomes longer, thereby further accelerating the reaction speed in the dissolution bottle (2).

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