Reagent adding flow rate control device for hydrometallurgy

Abstract

The utility model relates to the technical field of hydrometallurgy, in particular to a reagent adding flow rate control device for hydrometallurgy. The device comprises an adding device storage tank used for containing a smelting reagent, an oblique angle bottom plate obliquely arranged on the lower portion of the adding device storage tank, a bottom plate support located below the oblique angle bottom plate, a device upper cover located above the adding device storage tank and a discharging pipe communicated with the bottom of the adding device storage tank. The control ball valve is connected with the discharging pipe, the discharging hose is connected with the control ball valve, and the lowest position of the oblique angle bottom plate is adjacent to and flush with the lower edge of the discharging pipe. The device is convenient to operate, can effectively utilize a self-flowing technology and a flow velocity control valve, realizes reliable control on the adding rate and the adding amount of the reagent in the hydrometallurgy process, has wide popularization and application values in the field of hydrometallurgy, and can be used in related equipment with liquid reagent adding requirements in the hydrometallurgy process of noble metals.

Description

Technical Field

[0001] The utility model relates to the technical field of hydrometallurgy, in particular to a flow rate control device for adding hydrometallurgical reagents. Background Art

[0002] The statements in this section are merely intended to provide background information related to the technical solution of the present application to aid understanding, and they do not necessarily constitute prior art with respect to the technical solution of the present application.

[0003] During the hydrometallurgical process of precious metals, platinum group metals are typically separated and purified based on reaction kinetics. Methods such as oxidative distillation, liquid-liquid reduction, and chemical precipitation are often employed. These processes involve complex chemical environments and transform the stable forms of precious metals in the material to facilitate separation and purification. For example, when separating osmium and ruthenium, a strong oxidant is added to change the valence state of osmium and ruthenium, causing the corresponding tetroxide to volatilize. This process requires effective control of the rate of strong oxidant addition to prevent excessive initial reaction and violent boiling. During the rhodium refining process using a hydrochloric acid system, rhodium precipitation reagents are added. Adding these organic reagents too quickly can cause thermal failure, affecting precipitation efficiency, and thus the rate of reagent addition also requires control. Currently, the reagent storage tanks commonly used in chemical metallurgical units are closed high-level or low-level reagent tanks with fixed upper covers. The internal bottom plate is often horizontal and fixedly mounted on a platform. This is not flexible for adding small batches of reagents during the hydrometallurgical process, and reagents can accumulate at the bottom of the tank, making it difficult to clean. Utility Model Content

[0004] In order to solve the above technical problems, the present application provides a wet smelting reagent addition flow rate control device, which includes: an addition device storage tank for holding smelting reagents; an angled bottom plate obliquely arranged at the lower part of the addition device storage tank; wherein the angled bottom plate is an inclined surface at an angle to the horizontal direction, and the angled bottom plate divides the internal space of the addition device storage tank into two isolated spaces; a bottom plate support located below the angled bottom plate, the upper end of the bottom plate support is connected to the angled bottom plate, and the lower end is connected to the bottom wall of the addition device storage tank; a device cover located above the addition device storage tank; a discharge pipe connected to the bottom of the addition device storage tank; a control ball valve connected to the discharge pipe; a discharge hose connected to the control ball valve; wherein the lowest point of the angled bottom plate is adjacent to and flush with the lower edge of the discharge pipe.

[0005] In one embodiment, the angle between the angled bottom plate and the horizontal direction is between 10-20 degrees.

[0006] In one embodiment, the angle between the angled bottom plate and the horizontal direction is 15°.

[0007] In one embodiment, the discharge pipe and the control ball valve are connected via a flange.

[0008] In one embodiment, the control ball valve is a double-union ball valve.

[0009] In one embodiment, the nominal diameter of the control ball valve is 25 mm.

[0010] In one embodiment, the adding device storage tank, angled bottom plate, bottom plate support, and discharge pipe are all made of polyvinyl chloride and are made by hot-melt welding.

[0011] In one embodiment, the base plate support is arranged at a middle position below the angled base plate.

[0012] In one embodiment, a plurality of said base supports are provided.

[0013] The beneficial effects of the present application are as follows: a device for controlling the flow rate of adding reagents to a wet smelting process is provided, which is flexible and convenient to operate and does not accumulate reagents at the bottom of the storage tank. The device is easy to clean after use and does not affect the ratio of reagents added next time. The device is equipped with a control valve to effectively control the addition speed and amount, making it convenient for use in front of the reactor and suitable for flow rate control when liquid reagents need to be added during the wet smelting process. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The following further describes the embodiments of the present invention with reference to the accompanying drawings, wherein:

[0015] Figure 1 Schematic diagram of a hydrometallurgical system according to one embodiment.

[0016] Figure 2 A structural diagram of a flow rate control device for adding a hydrometallurgical reagent according to one embodiment.

[0017] The meanings of the reference numerals are as follows: 1-addition device storage tank; 2-angled bottom plate; 3-bottom plate support; 4-device upper cover; 5-discharge pipe; 6-control ball valve. DETAILED DESCRIPTION

[0018] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below through specific embodiments in conjunction with the accompanying drawings. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0019] Figure 1 This is a schematic diagram of a wet smelting system according to an embodiment, which includes a flow rate control device for rhodium precipitation reagents for precious metal materials and a reactor. The flow rate control device for rhodium precipitation reagents for precious metal materials is connected to the reactor and is used to add the reagents stored therein to the reactor at a suitable flow rate.

[0020] Figure 2 This is a structural diagram of a flow rate control device for adding a hydrometallurgical reagent according to one embodiment. The flow rate control device for adding a hydrometallurgical reagent may be a flow rate control device for adding a hydrometallurgical reagent for precious metals.

[0021] The wet smelting reagent addition flow rate control device includes: an addition device storage tank 1 for holding wet smelting reagents, an angled bottom plate 2 obliquely arranged at the lower part of the addition device storage tank 1, a bottom plate support 3 located below the angled bottom plate 2, a device upper cover 4 located above the addition device storage tank 1, a discharge pipe 5 connected to the bottom of the addition device storage tank 1, a control ball valve 6 connected to the discharge pipe 5, and a discharge hose connected to the control ball valve 6, wherein the lowest point of the angled bottom plate 2 is adjacent to and flush with the lower edge of the discharge pipe 5.

[0022] The angled bottom plate 2 at the lower part of the adding device storage tank 1 is an inclined surface at an angle to the horizontal direction. The angled bottom plate 2 divides the internal space of the adding device storage tank 1 into two isolated spaces. The lowest point of the angled bottom plate 2 is flush with the lower edge of the discharge pipe 5, which is convenient for emptying the reagent inside the adding device storage tank 1.

[0023] In one embodiment, the adding device storage tank 1, the angled bottom plate 2, the bottom plate support 3, and the discharge pipe 5 are all made of polyvinyl chloride, and the whole is made of PP plastic hot-melt welding.

[0024] In one embodiment, the discharge pipe 5 and the control ball valve 6 are connected by flanges and flexible joints.

[0025] In one embodiment, the device upper cover 4 above the adding device storage tank 1 is made separately and is detachable, which is used to ensure that the reagents will not be contaminated during the working process.

[0026] The upper end of the base support 3 is connected to the angled base 2, and the lower end is connected to the bottom wall of the device storage tank 1. The base support 3 can be located in the middle below the angled base 2 and connected to the bottom wall of the device storage tank 1 to prevent the angled base 2 from deforming or collapsing. The base support 3 can also be located at other locations below the angled base 2, and two or more base supports 3 can be provided as needed.

[0027] In one embodiment, the control ball valve 6 has a nominal diameter of 25 mm and can be a double-union ball valve made of polyvinyl chloride. The opening is adjusted to control the rate of reagent addition. A PVC union is installed at the rear end of the control ball valve 6 to connect to the discharge hose to control the overall flow of the reagents and ultimately introduce the reagents into the reactor.

[0028] In one embodiment, the angle between the angled bottom plate 2 and the horizontal direction is between 10-20°, for example, 15°.

[0029] During the specific implementation of the solution of the present invention, the device for controlling the flow rate of adding the reagents for the wet smelting process can be placed on a movable bracket or above the high platform of the reactor, and the discharge pipe 5, the control ball valve 6, the discharge hose, etc. can be connected in sequence, and the front end of the discharge hose can be passed into the reactor inlet or the reagent addition port. Before adding the liquid reagent, the reagents with the completed proportions can be evenly mixed and put into the storage tank 1 of the adding device, and the control ball valve 6 can be opened. The potential energy formed by the inclined surface of the angled bottom plate 2 of the storage tank can allow the reagents to flow by themselves. The low position of the angled bottom plate 2 of the device is flush with the lower edge of the liquid outlet, which can effectively ensure that the liquid reagent added each time can be added thoroughly by volume. At the same time, the control ball valve 6 can be used to ensure that the flow rate and the addition amount are controlled within the technical index range, ensuring that the reaction in the reactor is uniform and thorough, and the upper cover 4 of the device can ensure that the reagents in the process are not contaminated by impurities.

[0030] In one embodiment, the wet smelting reagent adding flow rate control device of the present invention can be installed in front of the rhodium precipitation pre-liquid kettle at the rhodium refining station.

[0031] The utility model is easy to move and simple to operate. During the reagent addition process, there is no need for manual operation at the reactor port for a long time. After adjusting the reagent flow rate and volume, the reaction in the reactor is uniform and the precipitation effect can be effectively achieved. After use, the device storage tank 1 and other accessories can be cleaned to create conditions for the next reagent preparation. The polyvinyl chloride material used in the device is lightweight, waterproof and moisture-proof, has flame retardant and heat-insulating effects, and has excellent corrosion resistance at room temperature. It has been used continuously for half a year without damage.

[0032] The present invention can also be used in other embodiments where liquid reagents need to be added during the wet smelting process, and can be used in related fields in full combination with the requirements of each embodiment without violating the design concept of the present invention.

[0033] References herein to "various embodiments," "some embodiments," "one embodiment," or "an embodiment," etc., mean that a particular feature, structure, or property described in connection with the embodiment is included in at least one embodiment. Thus, the appearances of the phrases "in various embodiments," "in some embodiments," "in one embodiment," or "in an embodiment," etc., in various places throughout this document do not necessarily refer to the same embodiment. Furthermore, particular features, structures, or properties may be combined in any suitable manner in one or more embodiments. Thus, particular features, structures, or properties shown or described in connection with one embodiment may be combined, in whole or in part, with features, structures, or properties of one or more other embodiments without restriction, as long as the combination is not illogical or inoperable.

[0034] Some exemplary embodiments of the present invention are described above. It will be understood that the above embodiments are only used to explain the present invention and do not constitute a limitation on the scope of protection of the present invention. The features in these embodiments can be recombined in an appropriate manner, and the solutions obtained thereby are still within the scope of protection claimed by the present invention. Based on the above embodiments, all other embodiments obtained by those skilled in the art without making any creative work, that is, all modifications, equivalent substitutions and improvements made within the spirit and principles of this application, fall within the scope of protection claimed by the present invention.

Claims

1. A device for controlling the flow rate of adding reagents to a wet smelting process, characterized in that: include: A feeding device storage tank (1) for holding hydrometallurgical reagents; an angled bottom plate (2) tiltedly arranged at the lower part of the feeding device storage tank (1), wherein the angled bottom plate (2) is an inclined surface at an angle to the horizontal direction, and the angled bottom plate (2) divides the internal space of the feeding device storage tank (1) into two mutually isolated spaces; a bottom plate support (3) located below the angled bottom plate (2), the upper end of the bottom plate support (3) being connected to the angled bottom plate (2) and the lower end being connected to the bottom wall of the feeding device storage tank (1); a device upper cover (4) located above the feeding device storage tank (1); a discharge pipe (5) connected to the bottom of the feeding device storage tank (1); a control ball valve (6) connected to the discharge pipe (5); and a discharge hose connected to the control ball valve (6); wherein the lowest point of the angled bottom plate (2) is adjacent to and flush with the lower edge of the discharge pipe (5).

2. The device for controlling the flow rate of adding a hydrometallurgical reagent according to claim 1, wherein: The angle between the angled bottom plate (2) and the horizontal direction is between 10 and 20 degrees.

3. The device for controlling the flow rate of adding a hydrometallurgical reagent according to claim 2, wherein: The angle between the angled bottom plate (2) and the horizontal direction is 15°.

4. The device for controlling the flow rate of adding a hydrometallurgical reagent according to claim 1, wherein: The discharge pipe (5) and the control ball valve (6) are connected via a flange.

5. The device for controlling the flow rate of adding a hydrometallurgical reagent according to claim 1, wherein: The control ball valve (6) is a double union ball valve.

6. The device for controlling the flow rate of adding a hydrometallurgical reagent according to claim 1, wherein: The nominal diameter of the control ball valve (6) is 25 mm.

7. The device for controlling the flow rate of adding a hydrometallurgical reagent according to claim 1, wherein: The adding device storage tank (1), the angled bottom plate (2), the bottom plate support (3), and the discharge pipe (5) are all made of polyvinyl chloride and are manufactured by hot-melt welding.

8. The device for controlling the flow rate of adding a hydrometallurgical reagent according to claim 1, wherein: The bottom plate support (3) is arranged at a middle position below the angled bottom plate (2).

9. The device for controlling the flow rate of adding a hydrometallurgical reagent according to claim 1, wherein: A plurality of base plate supports (3) are provided.

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