Secondary zinc oxide powder size mixing system

Abstract

The utility model relates to a secondary zinc oxide powder size mixing system, and belongs to the technical field of copper smelting. Comprising a storage bin, a belt weigher, a size mixing tank, a circulating tank and a reaction tank, a discharging pipe is arranged at the bottom of the storage bin, a belt weigher is arranged below the discharging pipe, a size mixing tank is arranged at the discharging end of the belt weigher, the size mixing tank is connected with a circulating tank through an overflow pipe, the circulating tank is connected with the reaction tank through a connecting pipe, the circulating tank is further connected with a circulating pump through a pipeline, and the circulating pump is connected with the connecting pipe through a pipeline. The secondary zinc oxide powder is firstly stored in the storage bin and then quantitatively put into the size mixing tank through the belt weigher to form the secondary zinc oxide solution, and then the secondary zinc oxide solution is guided into the reaction tank to react, so that dust pollution is effectively avoided, and meanwhile, the secondary zinc oxide powder is uniformly dispersed in liquid in a suspension form, so that the secondary zinc oxide powder is uniform in dispersion. The contact area with other reactants is increased and the contact is more uniform, so that the reaction is more sufficient and more uniform, and the reaction efficiency and the stability of the product quality are improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to copper smelting technical field especially, relates to a kind of secondary zinc oxide powder slurrying system. BACKGROUND

[0002] In the process of copper smelting flue dust treatment, solution purification process can be adjusted by adding secondary zinc oxide powder to the PH value of solution, secondary zinc oxide can react with acid, can the pH value of acidic solution is promoted to suitable range, is conducive to the precipitation separation of subsequent impurity ions, such as making iron, aluminum and other impurities in the form of hydroxide precipitate, to achieve the purpose of purifying solution.

[0003] Currently, solution purification in flue dust treatment adjusts PH value, and secondary zinc oxide powder is directly added to reaction tank through ton bag, and the adding mode can cause secondary zinc oxide powder to be not smooth or unstable in flow rate, so that the amount added to reaction tank is not uniform, and the consistency and stability of reaction are affected;If secondary zinc oxide powder in ton bag is not stored properly or placed for a long time, it can also cause caking phenomenon, and after being added to reaction tank, it is difficult to quickly disperse and dissolve, and the reaction rate and effect are affected;Moreover, in the process of ton bag unloading, secondary zinc oxide powder is easy to produce dust, which not only pollutes the working environment, but also harms the health of operators, and also causes waste of raw materials;Furthermore, the amount of secondary zinc oxide powder added to reaction tank from ton bag is difficult to accurately control, which is not conducive to accurate material balance control and process parameter optimization of reaction, and further affects the stability of product quality. CONTENT OF UTILITY MODEL

[0004] To solve or partially solve the problems in the related art, the utility model provides a kind of secondary zinc oxide powder slurrying system, to solve the technical problems that secondary zinc oxide powder is directly added to slurrying process and is difficult to quickly disperse and dissolve, and affects reaction rate and effect, and is easy to produce dust pollution.

[0005] The above-mentioned secondary zinc oxide powder slurrying system comprises a storage bin, a belt scale, a slurrying tank, a circulating tank and a reaction tank.

[0006] The bottom of the storage bin is provided with a discharge pipe, and the discharge pipe is provided with a belt scale below, the discharge end of the belt scale is provided with a slurrying tank, the top of the slurrying tank is connected with the top of the circulating tank through an overflow pipe, the top of the circulating tank is connected with the top of the reaction tank through a connecting pipe, the bottom of the circulating tank is connected with the inlet end of the circulating pump through a pipeline, the outlet end of the circulating pump is connected with the middle part of the connecting pipe through a pipeline, and the two ends of the connecting pipe are respectively provided with a first valve and a second valve.

[0007] In some schemes, a rapping device is arranged on the outer side of the storage bin.

[0008] In some schemes, a discharge valve is arranged on the discharge pipe.

[0009] In some schemes, the top of the storage bin is provided with a feeding port, and the feeding port is provided with a bag opening mechanism.

[0010] In some schemes, the top of the storage bin is provided with a dust collecting device, a dust collecting pipe of the dust collecting device is connected with the inner top of the storage bin, and an ash outlet of the dust collecting device is connected with the storage bin through a pipeline.

[0011] The technical scheme provided by the utility model can have the following beneficial effects:

[0012] The application can effectively avoid the generation of dust pollution by first storing the secondary zinc oxide powder in the storage bin, then quantitatively feeding the secondary zinc oxide powder into the mixing tank through the belt scale, forming a secondary zinc oxide solution, and then introducing the secondary zinc oxide solution into the reaction tank for reaction.

[0013] It should be understood that the foregoing general description and the following detailed description are only exemplary and explanatory, and cannot limit the utility model. BRIEF DESCRIPTION OF DRAWINGS

[0014] The above and other objects, features and advantages of the utility model will become more apparent from the following detailed description of exemplary embodiments of the utility model, taken in conjunction with the accompanying drawings, in which like reference characters refer to like parts throughout the several views. In the utility model exemplary embodiments, the same reference numerals are generally used to refer to same parts throughout.

[0015] Figure 1 is a schematic diagram of pipe connection of the secondary zinc oxide powder mixing system shown in the utility model embodiment;

[0016] Reference signs:

[0017] 1, storage bin; 2, belt scale; 3, mixing tank; 4, circulating tank; 5, reaction tank; 6, overflow pipe; 7, connecting pipe; 8, circulating pump; 9, first valve; 10, second valve; 11, rapping device; 12, unloading valve; 13, feeding port; 14, bag opening mechanism; 15, dust collecting device. DETAILED DESCRIPTION

[0018] The utility model will be described in further detail below in conjunction with the drawings and specific embodiments, but the protection scope of the utility model is not limited to the content.

[0019] Please refer to Figure 1The application provides a secondary zinc oxide powder slurry mixing system, which comprises a storage bin 1, a belt scale 2, a slurry mixing tank 3, a circulating tank 4 and a reaction tank 5. The slurry mixing tank 3, the circulating tank 4 and the reaction tank 5 have the same structure and each comprises a tank body and a stirring mechanism. The stirring mechanism comprises stirring blades rotatably installed in the tank body and a driving motor installed at the top of the tank body. The driving motor is connected with the stirring blades through a stirring shaft. During operation, water or liquid slurry is injected into the slurry mixing tank 3 through a pipeline, and the driving motor drives the stirring blades to rotate through the stirring shaft, so as to mix the slurry and the secondary zinc oxide powder in the tank body.

[0020] The bottom of the storage bin 1 is provided with a discharge pipe. In some specific embodiments, the bottom of the storage bin 1 is conical, which is beneficial to the discharge of the materials in the bin. The bottom of the discharge pipe is provided with the belt scale 2. The lower end of the discharge pipe has a certain gap with the belt scale 2. Generally, the secondary zinc oxide powder discharged from the discharge pipe is accumulated on the belt scale 2 to the discharge port, so as to form a material seal. The discharge end of the belt scale 2 is provided with the slurry mixing tank 3. The top of the slurry mixing tank 3 is connected with the top of the circulating tank 4 through an overflow pipe 6. The top of the circulating tank 4 is connected with the top of the reaction tank 5 through a connecting pipe 7. The bottom of the circulating tank 4 is connected with the inlet end of a circulating pump 8 through a pipeline. The outlet end of the circulating pump 8 is connected with the middle part of the connecting pipe 7 through a pipeline. The two ends of the connecting pipe 7 are respectively provided with a first valve 9 and a second valve 10.

[0021] During operation, the secondary zinc oxide powder in the storage bin 1 is introduced into the belt scale 2 through the discharge pipe, weighed by the belt scale 2 and then poured into the slurry mixing tank 3. In the slurry mixing tank 3, the slurry mixing is carried out according to a certain liquid-solid ratio. The slurry mixing secondary zinc oxide solution is introduced into the circulating tank 4 through the overflow pipe 6. When the reaction tank 5 needs to introduce the secondary zinc oxide solution, the first valve 9 is opened and the second valve 10 is closed. The secondary zinc oxide solution in the circulating tank 4 is uniformly transported to the reaction tank 5 through the circulating pump 8. When the reaction tank 5 does not need to introduce the secondary zinc oxide solution, the first valve 9 is closed and the second valve 10 is opened. The secondary zinc oxide solution in the circulating tank 4 is introduced into the circulating tank 4 again through the circulating pump 8, so that the secondary zinc oxide solution in the circulating tank 4 is circulated.

[0022] The present application weighs the amount of secondary zinc oxide powder put in through the belt scale 2, which is beneficial to more accurately control the addition amount of secondary zinc oxide powder, and further beneficial to accurately control the reaction process; there is no high drop of secondary zinc oxide powder in the whole process, thereby effectively reducing the generation of dust and reducing dust pollution, at the same time, after the secondary zinc oxide powder is slurried, the dust problem can be effectively avoided and the harm to the health of personnel is reduced when the secondary zinc oxide powder is added into the reaction tank; the slurry makes the secondary zinc oxide powder slowly release and react in the liquid phase, which avoids the local reaction caused by the direct addition of a large amount of dry powder, is beneficial to the control of reaction temperature and speed, and makes the reaction process more stable and safe; the secondary zinc oxide powder is uniformly dispersed in the liquid in the form of a suspension, the contact area with other reactants is increased and the contact is more uniform, which can make the reaction more sufficient and uniform, improve the reaction efficiency and the stability of product quality; the secondary zinc oxide powder after slurry has good fluidity, which is convenient for conveying to the reaction tank 5 through pipes, pumps and other equipment; when the secondary zinc oxide solution is not put into the reaction tank 5, the secondary zinc oxide solution in the circulating tank 4 is made to flow by the circulating pump 8, which effectively avoids the precipitation of the secondary zinc oxide solution.

[0023] In the embodiment, a vibrator 11 is arranged on the outer side of the storage bin 1. The vibrator 11 drives the side wall of the storage bin 1 to vibrate, so as to ensure smooth discharging of the storage bin 1 and improve the discharging speed.

[0024] In the embodiment, a discharging valve 12 is arranged on the discharging pipe, which is used to control the opening and closing of the discharging pipe.

[0025] In some specific embodiments, the top of the storage bin 1 is provided with a feeding port 13, and an opening bag mechanism 14 is arranged in the feeding port 13. The opening bag mechanism is conical and is composed of two, three or four opening bag knives. When the secondary zinc oxide powder is put into the smoke storage bin 1, the bag of secondary zinc oxide powder is directly placed in the feeding port 13, and the bag of secondary zinc oxide powder can be opened under the action of the opening bag mechanism, which is more convenient to use.

[0026] In the embodiment, a dust collecting device 15 is arranged on the top of the storage bin 1. A dust collecting pipe of the dust collecting device 15 is connected with the inner top of the storage bin 1, and an ash discharge port of the dust collecting device 15 is connected with the storage bin 1 through a pipeline. The dust collecting device 15 can be a bag dust collector or an electric dust collector. When the secondary zinc oxide powder is put into the smoke storage bin 1, the dust collecting device 15 collects the scattered secondary zinc oxide powder, and then the secondary zinc oxide powder is put into the smoke storage bin 1 again, which effectively avoids the technical problems of smoke pollution and waste of smoke.

[0027] The above has described various embodiments of the present application, the above description is exemplary, not exhaustive, and is not limited to the disclosed embodiments. Many modifications and changes are obvious to those skilled in the art without departing from the scope and spirit of the described embodiments. The selection of terms used herein is intended to best explain the principles, practical application, or improvement of technology in the market of the embodiments, or to enable other ordinary skilled in the art to understand the embodiments disclosed herein.

Claims

1. A secondary zinc oxide slurry system characterized by: It comprises a storage bin (1), a belt scale (2), a mixing tank (3), a circulating tank (4) and a reaction tank (5). The bottom of the storage bin (1) is provided with a discharge pipe, the lower part of the discharge pipe is provided with a belt scale (2), the discharge end of the belt scale (2) is provided with a mixing tank (3), the top of the mixing tank (3) is connected with the top of the circulating tank (4) through an overflow pipe (6), the top of the circulating tank (4) is connected with the top of the reaction tank (5) through a connecting pipe (7), the bottom of the circulating tank (4) is connected with the inlet end of a circulating pump (8) through a pipeline, the outlet end of the circulating pump (8) is connected with the middle part of the connecting pipe (7) through a pipeline, and the two ends of the connecting pipe (7) are respectively provided with a first valve (9) and a second valve (10).

2. The secondary zinc oxide powder mixing system according to claim 1, characterized in that: The outer side of the storage bin (1) is provided with a vibrator (11).

3. The secondary zinc oxide powder mixing system according to claim 1, characterized in that: The discharge pipe is provided with a discharge valve (12).

4. The secondary zinc oxide powder mixing system according to claim 1, characterized in that: The top of the storage bin (1) is provided with a feeding port (13), and the feeding port (13) is provided with a bag opening mechanism (14).

5. The secondary zinc oxide powder mixing system according to claim 1, characterized in that: The top of the storage bin (1) is provided with a dust collecting device (15), the dust collecting pipe of the dust collecting device (15) is connected with the inner top of the storage bin (1), and the ash discharge port of the dust collecting device (15) is connected with the storage bin (1) through a pipeline.

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