Acid dissolution device for zirconium slag

Abstract

The acid dissolution device comprises an acid dissolution kettle and a kettle cover, a jacket type heating structure is arranged on the outer wall face of the acid dissolution kettle in a sleeved mode and used for heating materials in the acid dissolution kettle, a plurality of ultrasonic transducers are arranged on the outer wall face of the bottom of the acid dissolution kettle at intervals in the circumferential direction, and the ultrasonic transducers are used for heating the materials in the acid dissolution kettle. The kettle cover is detachably mounted at an opening in the top of the acid dissolving kettle, a bidirectional stirring mechanism extending into the acid dissolving kettle is arranged on the kettle cover, and the bidirectional stirring mechanism comprises an outer stirring rod and an inner stirring rod which can rotate in opposite directions at the same time. According to the technical scheme provided by the utility model, the decomposition rate of the zirconium slag is increased to more than 98%, the reaction time is shortened to 3.5 hours and the acid liquor is saved by 40% through the cooperation of reverse stirring and ultrasonic cavitation effect and the cooperation of partitioned gradient heating.

Description

Technical Field

[0001] This utility model belongs to the field of zirconium slag acid dissolution technology, specifically an acid dissolution device for zirconium slag. Background Technology

[0002] Zircon slag is a byproduct of zircon sand smelting and requires acid dissolution to extract valuable metals. Currently, acid dissolution of zircon slag mainly relies on reaction vessels.

[0003] Currently, stirring mechanisms are typically designed into reactors to mix materials and improve the acid dissolution quality of zirconium slag. However, current stirring mechanisms can usually only perform unidirectional stirring at the same time, resulting in poor mixing effect between zirconium slag and solution. Uneven solid-liquid contact affects the acid dissolution quality of zirconium slag and also leads to a large consumption of acid. Utility Model Content

[0004] The purpose of this invention is to provide an acid dissolution device for zirconium slag in order to solve the problems mentioned above.

[0005] The technical solution adopted by this utility model is as follows: an acid dissolution device for zirconium slag, including an acid dissolution kettle and a kettle cover. The outer wall of the acid dissolution kettle is fitted with a jacketed heating structure for heating the material inside the acid dissolution kettle. Multiple ultrasonic transducers are arranged circumferentially on the outer wall of the bottom of the acid dissolution kettle. The kettle cover is detachably installed at the top opening of the acid dissolution kettle. A bidirectional stirring mechanism extending into the acid dissolution kettle is provided on the kettle cover. The bidirectional stirring mechanism includes an outer stirring rod and an inner stirring rod that can rotate simultaneously in opposite directions.

[0006] In a preferred embodiment, the jacketed heating structure includes a spiral heating coil sleeved on the outer wall of the acid dissolving vessel, and the upper and lower ends of the spiral heating coil are respectively provided with a heating medium discharge inlet and a heating medium discharge outlet.

[0007] In a preferred embodiment, an electrical control box is provided on the outer wall of the acid dissolution vessel, and an ultrasonic generator that cooperates with the ultrasonic transducer is provided inside the electrical control box.

[0008] In a preferred embodiment, the outer stirring rod has a hollow cavity, the inner stirring rod passes through the hollow cavity and is coaxially arranged with the outer stirring rod, and a plurality of stirring blades are arranged on the outer wall surfaces of the inner and outer stirring rods.

[0009] In a preferred embodiment, the outer walls of the inner stirring rod and the outer stirring rod are respectively provided with a first gear and a second gear. The bidirectional stirring mechanism further includes a mounting bracket installed at the bottom of the vessel lid, the mounting bracket having a receiving cavity for accommodating the first gear and the second gear.

[0010] In a preferred embodiment, the mounting bracket is provided with a double gear and a third gear, the third gear meshing with the second gear and the lower gear of the double gear, and the first gear meshing with the upper gear of the double gear.

[0011] In a preferred embodiment, both the inner stirring rod and the outer stirring rod are mounted on the mounting frame, and a drive motor is provided on the top of the kettle lid. The output end of the drive motor extends into the acid dissolving kettle and is connected to the inner stirring rod.

[0012] In a preferred embodiment, the acid dissolving vessel is provided with multiple feeding ports, the bottom of the acid dissolving vessel is provided with an electric unloading valve, and the bottom of the acid dissolving vessel is provided with multiple support legs circumferentially.

[0013] In summary, due to the adoption of the above technical solution, the beneficial effects of this utility model are:

[0014] 1. In this utility model, a bidirectional stirring mechanism is designed in the reaction vessel that can stir in different directions at the same time. During stirring, the two sets of stirring paddles rotate in opposite directions, which can form a mixed flow, thereby improving the mixing quality of the materials.

[0015] 2. In this invention, by combining reverse stirring with ultrasonic cavitation effect and zoned gradient heating, the diffusion boundary layer limitation is overcome, the decomposition rate of zirconium slag can be increased to over 98%, and the reaction time can be shortened to 3.5 hours. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of the entire utility model;

[0017] Figure 2 This is a cross-sectional plan view of the overall structure of this utility model;

[0018] Figure 3 This is a schematic diagram of the planar structure of the bidirectional stirring mechanism in this utility model;

[0019] Figure 4 This is a partial cross-sectional planar structural diagram of the bidirectional stirring mechanism in this utility model.

[0020] The markings in the diagram are: 1-Acid dissolving kettle, 2-Support leg, 3-Kettle cover, 4-Drive motor, 5-Feeding port, 6-Electrical control box, 7-Heating medium discharge port, 8-Bidirectional stirring mechanism, 81-Outer stirring rod, 82-Stirring paddle, 83-Inner stirring rod, 84-Mounting bracket, 85-First gear, 86-Second gear, 87-Double gear, 88-Third gear, 9-Spiral heating coil, 10-Heating medium discharge port, 11-Ultrasonic transducer, 12-Electric discharge valve. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this utility model and are not intended to limit this utility model.

[0022] Reference Figure 1-4 A zirconium slag acid dissolution device includes an acid dissolution vessel 1 and a vessel cover 3. The outer wall of the acid dissolution vessel 1 is fitted with a jacketed heating structure, which includes a spiral heating coil 9 fitted on the outer wall of the acid dissolution vessel 1. The upper and lower ends of the spiral heating coil 9 are respectively provided with a heating medium discharge inlet 7 and a heating medium discharge inlet 10. A temperature instrument (not shown in the figure) for monitoring temperature can be installed inside the acid dissolution vessel 1. The jacketed heating structure can introduce external heating medium, such as steam or hot water, through the heating medium discharge inlet 7. The external heating medium moves from top to bottom along the spiral heating coil 9, which can fully heat the material inside the acid dissolution vessel 1, thereby improving the acid dissolution effect of the material inside.

[0023] Furthermore, for heating the material inside the acid dissolving vessel 1, multiple ultrasonic transducers 11 are arranged circumferentially on the outer wall of the bottom of the acid dissolving vessel 1. An electrical control box 6 is arranged on the outer wall of the acid dissolving vessel 1. An ultrasonic generator that cooperates with the ultrasonic transducers 11 is arranged in the electrical control box 6. The ultrasonic waves generate alternating high and low pressures in the exposed liquid. During the low-pressure cycle, the ultrasonic waves generate vacuum bubbles in the liquid. During the high-pressure cycle, the vacuum bubbles rupture violently. The implosion of the cavitation bubbles causes strong hydrodynamic shear force. The shear force can make the reactants fully mixed and shorten the reaction time.

[0024] Furthermore, the lid 3 is detachably installed at the top opening of the acid dissolving vessel 1. The lid 3 is equipped with a bidirectional stirring mechanism 8 that extends into the interior of the acid dissolving vessel 1. The bidirectional stirring mechanism 8 includes an outer stirring rod 81 and an inner stirring rod 83 that can rotate simultaneously in opposite directions. The bidirectional stirring mechanism 8, which can stir in different directions simultaneously, is designed in the reactor. During stirring, the outer stirring rod 81 and the inner stirring rod 83 rotate in opposite directions, which can form a mixed flow, thereby improving the mixing quality of the materials. Through the counter-stirring combined with the ultrasonic cavitation effect and the zoned gradient heating, the diffusion boundary layer limitation is broken, and the zirconium slag decomposition rate can be increased to over 98%, and the reaction time can be shortened to 3.5 hours.

[0025] Furthermore, the acid dissolving vessel 1 is equipped with multiple feeding ports 5, an electric unloading valve 12 is installed at the bottom of the acid dissolving vessel 1, and multiple support legs 2 are arranged circumferentially at the bottom of the acid dissolving vessel 1. A

[0026] Furthermore, the outer stirring rod 81 has a hollow cavity, and the inner stirring rod 83 passes through the hollow cavity and is coaxially arranged with the outer stirring rod 81. Several sets of stirring paddles 82 are arranged on the outer walls of the inner stirring rod 83 and the outer stirring rod 81. A first gear 85 and a second gear 86 are respectively arranged on the outer walls of the inner stirring rod 83 and the outer stirring rod 81. The bidirectional stirring mechanism 8 also includes a mounting bracket 84 installed at the bottom of the vessel cover 3. The mounting bracket 84 has a receiving cavity for accommodating the first gear 85 and the second gear 86. A double gear 87 and a third gear 88 are rotated inside the mounting bracket 84. The third gear 88 meshes with the second gear 86 and the lower gear of the double gear 87. The upper gear of the first gear 85 meshes with the upper gear of the double gear 87. The inner stirring rod 83 and the outer stirring rod 81 are both mounted on the mounting frame 84. The top of the kettle cover 3 is equipped with a drive motor 4. The output end of the drive motor 4 extends into the acid dissolution kettle 1 and is connected to the inner stirring rod 83. The drive motor 4 drives the inner stirring rod 83 to rotate. During the rotation of the inner stirring rod 83, the first gear 85 is driven to rotate. At the same time as the first gear 85 rotates, the double gear 87, the third gear 88 and the second gear 86 rotate synchronously, so that the inner stirring rod 83 and the outer stirring rod 81 can rotate synchronously in opposite directions to improve the mixing effect of the material.

[0027] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An acid leaching device for zirconium slag, characterized in that, The device includes an acid dissolving vessel and a vessel lid. The outer wall of the acid dissolving vessel is fitted with a jacketed heating structure for heating the material inside the vessel. Multiple ultrasonic transducers are spaced circumferentially on the bottom outer wall of the acid dissolving vessel. The vessel lid is detachably installed at the top opening of the acid dissolving vessel. A bidirectional stirring mechanism extending into the interior of the acid dissolving vessel is provided on the vessel lid. The bidirectional stirring mechanism includes an outer stirring rod and an inner stirring rod that can rotate simultaneously in opposite directions.

2. The acid leaching device for zirconium slag as described in claim 1, characterized in that: The jacketed heating structure includes a spiral heating coil sleeved on the outer wall of the acid dissolving vessel, with a heating medium discharge inlet and a heating medium discharge outlet respectively provided at the upper and lower ends of the spiral heating coil.

3. The acid leaching device for zirconium slag as described in claim 1, characterized in that: An electrical control box is installed on the outer wall of the acid dissolution vessel, and an ultrasonic generator that works in conjunction with the ultrasonic transducer is installed inside the electrical control box.

4. The acid leaching device for zirconium slag as described in claim 1, characterized in that: The outer stirring rod has a hollow cavity, the inner stirring rod passes through the hollow cavity and is coaxially arranged with the outer stirring rod, and several sets of stirring blades are arranged on the outer wall surfaces of the inner and outer stirring rods.

5. The acid leaching device for zirconium slag as described in claim 1, characterized in that: The inner stirring rod and the outer stirring rod are respectively provided with a first gear and a second gear on their outer wall surfaces. The bidirectional stirring mechanism also includes a mounting bracket installed at the bottom of the kettle lid, and the mounting bracket has a receiving cavity for accommodating the first gear and the second gear.

6. The acid leaching device for zirconium slag as described in claim 5, characterized in that: The mounting bracket is equipped with a double gear and a third gear. The third gear meshes with the second gear and the lower gear of the double gear, and the first gear meshes with the upper gear of the double gear.

7. The acid leaching device for zirconium slag as described in claim 6, characterized in that: Both the inner and outer stirring rods are mounted on the mounting frame. A drive motor is provided on the top of the kettle lid. The output end of the drive motor extends into the acid dissolution kettle and is connected to the inner stirring rod.

8. The acid leaching device for zirconium slag as described in claim 1, characterized in that: The acid dissolving kettle is equipped with multiple feeding ports, an electric unloading valve at the bottom, and multiple support legs circumferentially arranged at the bottom.

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