Device for purifying supernate in zinc smelting

Abstract

The utility model discloses a purification device for supernate in zinc smelting, which comprises a purification tank, a blanking pipe is arranged on the purification tank, and the blanking pipe is connected with a mixing and stirring structure; wherein the mixing and stirring structure comprises a shell, a stirring device is arranged in the shell, and a liquid feeding hole and a solid feeding hole are formed in the top of the shell; the shell is connected with the discharging pipe through a liquid outlet pipe. According to the device, the mixing and stirring structure is additionally arranged in a traditional zinc powder adding mode in the purification operation process, so that a solution in the liquid supply pipeline and zinc powder on the belt weigher are fully mixed through the mixing and stirring structure and then overflow into the purification tank; therefore, the problems of solution quality fluctuation, high zinc powder unit consumption and the like caused by non-uniform mixing in a traditional zinc powder adding mode are solved, the production efficiency is improved, and the production cost is reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of zinc smelting reaction equipment, and in particular relates to a device for purifying supernatant in zinc smelting. Background Art

[0002] In the process of purifying the supernatant in the zinc smelting industry, the zinc powder replacement and impurity removal process is an important work link. In the zinc powder replacement process, the copper, cadmium, cobalt and other ions in the solution to be treated are precipitated on the surface of the zinc powder as the cathode, and zinc is used as the anode to form micro batteries such as Cu-Zn, Cd-Zn, and Co-Zn. Zinc is dissolved into the solution as the anode, and copper, cadmium, cobalt, etc. are replaced and precipitated as the cathode. Therefore, the mixing of zinc powder during the purification operation is the key to determining the unit consumption of zinc powder and the impurity removal effect.

[0003] At present, the traditional method of adding zinc powder during purification operation is as follows: Figure 1 , the solution to be treated is introduced into the purification tank 1-4 through the liquid inlet pipe 1-6, and the zinc powder is transported to the zinc powder adding barrel 1-2 by the crane. The zinc powder in the zinc powder adding barrel 1-2 is driven by the operation of the belt scale 1-1 and the action of gravity to be transmitted to the discharge port 1-5, and falls into the purification tank 1-4 with the purification tank stirring device 1-3 by gravity to mix and react with the solution to achieve the purpose of zinc powder replacement. There are many problems in the above adding method. For example, when zinc powder is added, first, when zinc powder is sprinkled from the upper part of the working tank into the solution, due to the action of the exhaust system of the working tank, some zinc powder with finer particle size will be sucked into the exhaust pipe, resulting in unnecessary waste of zinc powder and the accumulation of zinc powder in the pipeline has the risk of collapse and explosion. Second, after the addition of zinc powder, a large amount of deposition is not waited for complete reaction, and the solution to be treated has entered the next process, which leads to the inability to fully mix and replace the zinc powder, resulting in a large amount of zinc powder waste and affecting the solution impurity removal effect.

[0004] Therefore, how to provide a purification device that reduces the unit consumption of zinc powder and improves the quality of zinc liquid is a problem that needs to be solved urgently. Utility Model Content

[0005] In view of this, the purpose of the utility model is to provide a purification device for supernatant liquid in zinc smelting, by adding a mixing and stirring structure to the traditional zinc powder adding method in the purification process, so that the solution in the liquid supply pipeline and the zinc powder on the belt scale are first fully mixed by the mixing and stirring structure and then overflow into the purification tank, thereby avoiding the problems of solution quality fluctuation and high unit consumption of zinc powder caused by uneven mixing in the traditional zinc powder adding method, improving production efficiency and reducing production costs.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A purification device for supernatant in zinc smelting, comprising a purification tank, a feed pipe is provided on the purification tank, and the feed pipe is connected to a mixing and stirring structure;

[0008] The mixing and stirring structure comprises a shell, a stirring device is arranged inside the shell, and a liquid feed inlet and a solid feed inlet are arranged on the top of the shell;

[0009] The shell is connected with the feed pipe through a liquid outlet pipe.

[0010] Preferably, the liquid outlet pipe includes a guide pipe and an outlet pipe, the guide pipe is vertically arranged in the shell and located at the upper part of the shell, the bottom of the guide pipe is at a certain height from the bottom of the shell and the blades of the stirring device, and the upper part of the guide pipe is connected to the discharge pipe through the outlet pipe.

[0011] Preferably, the guide pipe, the outlet pipe and the feed pipe are welded or connected by flange bolts.

[0012] Preferably, the volume of the housing is 0.7-1m 3 .

[0013] Preferably, the rotation speed of the stirring device is 30-50 r / min, the blade angle of the stirring device is greater than 20°, and the stirring device is arranged at the bottom of the shell.

[0014] Preferably, the stirring device is electrically connected to the motor.

[0015] Preferably, the flow rate of the mixing structure is 100m 3 / h.

[0016] Preferably, the solution and zinc powder stay in the mixing and stirring structure for 35-45 seconds.

[0017] Preferably, a purification tank stirring device is provided in the purification tank.

[0018] Preferably, the liquid feed port is connected to a liquid feed pipe, and the solid feed port is arranged at the bottom of the belt scale.

[0019] Preferably, the diameter of the liquid inlet pipe is not greater than DN100.

[0020] Compared with the prior art, the utility model has the following beneficial effects:

[0021] The utility model adds a mixing and stirring structure to the traditional zinc powder adding method in the purification operation process, so that the solution in the liquid supply pipeline and the zinc powder on the belt scale are fully mixed by the mixing and stirring structure before overflowing into the purification tank, thereby avoiding the problems of solution quality fluctuation and high zinc powder unit consumption caused by uneven mixing in the traditional zinc powder adding method, thereby improving production efficiency and reducing production costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings in the following description are only embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0023] Figure 1 It is a front view of a purification device for supernatant in zinc smelting in the conventional technology;

[0024] Among them, a belt scale 1-1, a zinc powder adding bucket 1-2, a purification tank stirring device 1-3, a purification tank 1-4, a feed port 1-5, and a liquid inlet pipe 1-6;

[0025] Figure 2 This is a three-dimensional diagram of a device for purifying supernatant in zinc smelting according to the utility model;

[0026] Figure 3 It is a partial enlarged view of the mixing and stirring structure of a supernatant purification device in zinc smelting according to the utility model;

[0027] Figure 4 It is a cross-sectional view of a mixing and stirring structure of a supernatant purification device in zinc smelting according to the utility model;

[0028] Among them, there are a liquid inlet pipeline 1, a purification tank stirring device 2, a zinc powder adding barrel 3, a belt scale 4, a feed pipe 5, a purification tank 6, a mixing and stirring structure 7, a stirring device 8, a guide pipe 10, an outlet pipe 11, and a shell 13. DETAILED DESCRIPTION

[0029] The technical solutions in the embodiments of the present invention are described clearly and completely below. Obviously, the described embodiments are only a part of the embodiments of the present invention, not all of them. 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.

[0030] Example 1

[0031] like Figure 2-4 Provided is a purification device for supernatant in zinc smelting, comprising a purification tank 6, a feed pipe 5 is provided on the purification tank 6, and the feed pipe 5 is connected to a mixing and stirring structure 7;

[0032] Wherein, a purification tank stirring device 2 is provided in the purification tank 6 and is electrically connected to the motor;

[0033] The mixing and stirring structure 7 comprises a shell 13, a stirring device 8 is arranged in the shell 13, the stirring device 8 is electrically connected to the motor, and a liquid feed port and a solid feed port are arranged at the top of the shell 13;

[0034] The shell is connected to the feed pipe 5 through a liquid outlet pipe, and the liquid outlet pipe includes a guide pipe 10 and an outlet pipe 11. The guide pipe 10 is vertically arranged in the shell 13 and located at the upper part of the shell 13, and has a certain height from the bottom of the shell 13 and the blades of the stirring device 8. The upper part of the guide pipe 10 is connected to the feed pipe 5 through the outlet pipe 11. The guide pipe 10, the outlet pipe 11 and the feed pipe 5 are welded or connected by flange bolts. Before overflowing, the zinc powder mixed solution will be mixed again when passing through the guide pipe 10, the outlet pipe 11 and the feed pipe 5;

[0035] Shell 13 volume capacity V = 0.7-1.0m 3 , stirring speed 30-50r / min, the flow rate of the liquid inlet pipe entering the mixing and stirring structure 7 is about 100m per hour 3 / h, the designed residence time of the solution and zinc powder is between 35-45s. If the volume of the mixing and stirring structure 7 is too large, the residence time of the zinc powder and the solution will be too long, resulting in a chemical reaction between the zinc powder and the solution after mixing before entering the purification tank 6, resulting in an increase in the unit consumption of zinc powder. If the volume is too small, the zinc powder and the solution will not be completely mixed before entering the purification tank 6, resulting in an insufficient zinc powder deposition reaction.

[0036] The blade angle of the stirring device 8 is greater than 20°, which can cause the solution to tumble;

[0037] The diameter of the liquid inlet pipe 1 is not greater than DN100, and the liquid inlet flow rate is about 100m 3 / h;

[0038] The liquid feed port is connected to the liquid feed pipe 1, and the solid feed port is arranged at the bottom of the belt scale 4, and the belt scale 4 is connected to the zinc powder adding bucket 3;

[0039] The working principle of the device of the utility model is: the solution in the liquid supply pipeline 1 and the zinc powder on the belt scale 4 are first fully mixed by the mixing and stirring structure 7, and then overflow into the purification tank 6 with the purification tank stirring device 2 to mix and react with the solution to achieve the purpose of zinc powder replacement. The device can steadily improve the quality of the solution, reduce the unit consumption of zinc powder by 25kg / t, and increase the first-time qualified rate of the solution by 5%. It avoids the problems of solution quality fluctuation and high unit consumption of zinc powder caused by uneven mixing in the traditional zinc powder adding method, thereby improving production efficiency and reducing production costs.

[0040] The various embodiments are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to in detail.

[0041] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A device for purifying supernatant in zinc smelting, characterized in that: It comprises a purification tank, on which a feed pipe is provided, and the feed pipe is connected to a mixing and stirring structure; The mixing and stirring structure comprises a shell, a stirring device is arranged inside the shell, and a liquid feed inlet and a solid feed inlet are arranged on the top of the shell; The shell is connected with the feed pipe through a liquid outlet pipe.

2. The device for purifying supernatant in zinc smelting according to claim 1, characterized in that: The liquid outlet pipe includes a guide pipe and an outlet pipe. The guide pipe is arranged in the shell and located at the upper part of the shell. The upper part of the guide pipe is connected with the feed pipe through the outlet pipe.

3. The device for purifying supernatant in zinc smelting according to claim 2, characterized in that: The flow guide pipe, the outlet pipe and the feed pipe are welded or connected by flange bolts.

4. The device for purifying supernatant in zinc smelting according to claim 2, characterized in that: The residence time of the supernatant and the zinc powder in the mixing and stirring structure is 35-45 seconds.

5. The device for purifying supernatant in zinc smelting according to claim 1, characterized in that: The blade angle of the stirring device is greater than 20 degrees and is arranged at the bottom of the shell.

6. The device for purifying supernatant in zinc smelting according to claim 1, characterized in that: The stirring device is electrically connected to the motor.

7. The device for purifying supernatant in zinc smelting according to claim 1, characterized in that: The volume of the shell is 0.7-1m 3 .

8. The device for purifying supernatant in zinc smelting according to claim 1, characterized in that: A purification tank stirring device is arranged in the purification tank.

9. The device for purifying supernatant in zinc smelting according to claim 1, characterized in that: The liquid feed port is connected to a liquid feed pipeline, and the solid feed port is arranged at the bottom of the belt scale.

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