Sulfuric acid leaching kettle

Abstract

The utility model discloses a sulfuric acid leaching kettle which comprises a barrel body, a flat cover is connected to the upper end of the barrel body, a stirring device is connected to the center of the flat cover, a stirring shaft of the stirring device is arranged at the center of the interior of the barrel body, and a bottom supporting seat is arranged at the bottom of the barrel body; a cleaning device is arranged below the bottom supporting base, and a discharging port is formed in the center of the bottom of the barrel. The utility model has the advantages that the cleaning device synchronously rotates along with the stirring shaft, so that sediments at the bottom of the kettle can be conveniently and timely cleaned; the spraying holes of the spraying ring spray corresponding media into the equipment so as to eliminate foam above the liquid level or absorb corresponding gas or impurities through spraying liquid, and meanwhile, cleaning media can be sprayed through the spraying holes so as to clean the tank wall and part of the stirring shaft in real time.

Description

Technical Field

[0001] The utility model relates to the field of chemical industry, in particular to a strong acid reaction kettle. Background Art

[0002] Sulfuric acid (H2SO4) is a strong acid that can completely ionize in aqueous solution to produce a large amount of hydrogen ions (H + ) and sulfate ions (SO4 2- ). These ions are highly chemically active and can react chemically with specific components in minerals or raw liquids. For example, for some metal ores, hydrogen ions can undergo a replacement reaction with metal ions, allowing the metal ions to enter the solution, thereby achieving the leaching of specific metal components. Taking the common zinc ore leaching as an example, sulfuric acid reacts with sphalerite (ZnS), and the chemical equation is: ZnS+H2SO4→ZnSO4+H2S↑. In this reaction, sulfuric acid acts as a leaching agent, leaching the zinc in the ore into the solution in the form of zinc sulfate (ZnSO4), while producing hydrogen sulfide (H2S) gas. Through this chemical reaction, the sulfuric acid leaching kettle can convert the target components in the mineral or raw liquid into soluble substances for subsequent separation and purification operations. However, for large-volume leaching kettles, uneven stirring may still occur at the edges and corners of the kettle body. Because they are farther from the mixing center, the mixing effect between the material and the sulfuric acid solution in these areas is relatively poor, which may lead to incomplete local reactions, affecting leaching efficiency and consistent product quality. The agitator's stirring range and intensity may not be able to adapt to the varying characteristics of all types of materials. For example, for materials with large density differences or containing viscous components, the existing stirring structure may not be able to achieve ideal stirring effect at the bottom of the leaching kettle, which may easily lead to material stratification or agglomeration, thus hindering the smooth progress of the chemical reaction. Therefore, to prevent clogging of the discharge port, regular cleaning is required near the discharge port. Utility Model Content

[0003] In order to solve the above problems, the utility model discloses a sulfuric acid leaching kettle.

[0004] The specific technical solutions are as follows:

[0005] A sulfuric acid leaching kettle comprises a cylinder, the upper end of which is connected to a flat cover, a stirring device is connected at the center of the flat cover, a stirring shaft of the stirring device is arranged at the center of the cylinder, and a bottom support seat is provided at the bottom of the cylinder; a cleaning device is provided below the bottom support seat, and a discharge port is provided at the center of the bottom of the cylinder; a hanging frame is provided below the flat cover, the hanging frame is connected to a spraying ring, and the end of the spraying ring passes through the flat cover and communicates with the outside.

[0006] The lower end of the stirring shaft is axially connected to the bottom support seat, and the bottom support seat includes a support leg. The lower end of the support leg abuts against the bottom of the cylinder, and the upper end is connected to the sleeve. A bearing is provided inside the sleeve. The stirring shaft passes through the bearing and is connected to the cleaning device.

[0007] The cleaning device is a trapezoidal structure surrounded by round steel, and the shape of the bottom of the cleaning device is arranged in accordance with the shape of the bottom of the cylinder.

[0008] The inner bottom of the spray ring is provided with a spray hole, and the diameter of the spray ring is larger than the diameter of the blade of the stirring shaft.

[0009] The advantages of the utility model are that the cleaning device rotates synchronously with the stirring shaft, which is convenient for timely removal of sediments on the bottom of the kettle, and the spray holes of the spray ring spray the corresponding medium into the interior of the equipment to eliminate foam above the liquid surface or absorb the corresponding gas or impurities with the spray liquid. At the same time, the cleaning medium can also be sprayed through this opening to clean the tank wall and part of the stirring shaft in real time. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 This is a schematic diagram of the structure of the utility model;

[0011] Figure 2 A schematic diagram of the nozzle structure in direction A. DETAILED DESCRIPTION

[0012] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described 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 making creative efforts are within the scope of protection of the present invention.

[0013] A sulfuric acid leaching kettle comprises a cylinder 1, a flat cover 2 being connected to the upper end of the cylinder 1, a stirring device 3 being connected at the center of the flat cover 2, a stirring shaft 4 of the stirring device 3 being arranged at the center of the cylinder, and a bottom support seat 5 being provided at the bottom of the cylinder; a cleaning device 6 being provided below the bottom support seat 5, and a discharge port 7 being provided at the center of the bottom of the cylinder 1; a hanging frame 8 being provided below the flat cover 2, the hanging frame 8 being connected to a spraying ring 9, and the end of the spraying ring 9 passing through the flat cover and communicating with the outside.

[0014] The lower end of the stirring shaft 4 is axially connected to the bottom support seat 5. The bottom support seat 5 includes a support leg 51. The lower end of the support leg 51 abuts against the bottom of the cylinder, and the upper end is connected to the sleeve 52. A bearing 53 is provided inside the sleeve. The stirring shaft 4 passes through the bearing 53 and is connected to the cleaning device 6.

[0015] The cleaning device 6 is a trapezoidal structure surrounded by round steel, and the shape of the bottom of the cleaning device 6 is arranged to follow the shape of the bottom of the cylinder.

[0016] In order to prevent the liquid medium from being directly sprayed onto the stirring blades to reduce the corrosion of the stirring blades, a spray hole 91 is provided at the bottom of the spray ring 9, and the diameter of the spray ring is larger than the diameter of the blades of the stirring shaft.

[0017] The beneficial effects of the utility model are:

[0018] A cleaning device is added to the bottom of the equipment: it rotates synchronously with the agitator shaft, facilitating the timely removal of sediment from the bottom of the kettle. The cleaning device is made of round steel and shaped to the required shape. Firstly, it serves a cleaning function, and secondly, the round steel has a smaller cross-section than the plate. The rotating surface of the round steel has little effect on the flow direction and flow rate of the fluid, and the fluid is basically unaffected when it flows out of the discharge port.

[0019] A spray ring is installed on the top of the equipment: nozzles spray the corresponding medium into the equipment to eliminate foam above the liquid surface or absorb relevant gases or impurities with the spray liquid. Cleaning medium can also be sprayed through this opening to clean the tank wall and part of the agitator shaft in real time. The spray ring is used to clean the tank wall during shutdown. The cleaning medium flows evenly from the top to the bottom along the tank wall, eliminating manual cleaning and reducing pollution and harm to the human body. The size, direction, number, and arrangement of the openings on the spray ring can be adjusted according to factors such as equipment size, medium concentration and characteristics, and process requirements.

Claims

1. A sulfuric acid leaching kettle, comprising a cylinder, a flat cover connected to the upper end of the cylinder, and a stirring device connected to the center of the flat cover, characterized in that: The stirring shaft of the stirring device is arranged at the center of the cylinder, and a bottom support seat is provided at the bottom of the cylinder; a cleaning device is provided below the bottom support seat, and a discharge port is provided at the bottom center of the cylinder; a hanging frame is provided below the flat cover, and the hanging frame is connected to the spraying ring, and the end of the spraying ring passes through the flat cover and is connected to the outside.

2. The sulfuric acid leaching kettle according to claim 1, characterized in that: The lower end of the stirring shaft is axially connected to the bottom support seat, and the bottom support seat includes a support leg. The lower end of the support leg abuts against the bottom of the cylinder, and the upper end is connected to the sleeve. A bearing is provided inside the sleeve. The stirring shaft passes through the bearing and is connected to the cleaning device.

3. The sulfuric acid leaching kettle according to claim 1, wherein: The cleaning device is a trapezoidal structure surrounded by round steel, and the shape of the bottom of the cleaning device is arranged in accordance with the shape of the bottom of the cylinder.

4. The sulfuric acid leaching kettle according to claim 1, wherein: The inner bottom of the spray ring is provided with a spray hole, and the diameter of the spray ring is larger than the diameter of the blade of the stirring shaft.

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