A dosing system for a flotation process

Abstract

This invention provides a reagent dosing system for flotation processes, belonging to the field of mineral processing technology. It includes a reagent preparation unit, a reagent storage unit, and an automatic dosing unit, which are connected sequentially via pipelines. The reagent preparation unit includes a stirring tank and a self-cleaning filter. The stirring tank is connected to the self-cleaning filter via a pipeline, and a return pipe is connected to the self-cleaning filter, with its other end located above the stirring tank. This invention avoids pipeline blockage and reduces raw material waste.

Description

Technical Field

[0001] This utility model belongs to the field of mineral processing technology, and in particular relates to a reagent dosing system for flotation processes. Background Technology

[0002] Flotation is a mineral processing method that utilizes the differences in the physicochemical properties of mineral surfaces to separate minerals through bubble adsorption. It is widely used in the separation of metallic ores (such as copper, lead, zinc, and gold), non-metallic ores (such as apatite and fluorite), and coal, and has significant advantages, especially in processing fine-grained disseminated ores.

[0003] In flotation processes, reagents are the key factors that determine the mineral separation effect. They achieve selective separation of target minerals by changing the physicochemical properties of the mineral surface and regulating the generation and stability of bubbles.

[0004] In the grinding and classification process of mineral processing, adding reagents according to the operating parameters in the flotation process is a crucial component in ensuring the yield and recovery rate of flotation concentrate. Controlling the automatic addition of reagents, ensuring precise and accurate dosage, and maintaining the rationality of process conditions and reagent addition, while avoiding reagent waste and increased production costs, are essential implementation measures.

[0005] Therefore, the mining industry widely uses automatic dosing machines for reagent addition. Automatic dosing machines can prepare and store reagents and automatically transport them to various dosing points in flotation. When preparing reagents, the dry reagent powder first needs to be prepared into a reagent solution of a certain concentration. During the dissolution process of the dry reagent powder, incompletely dissolved reagent particles often appear. These particles can easily cause pipe blockage. Currently, most automatic dosing machines avoid clogging the pipes by filtering the reagent particles. The filtered reagent particles are discarded as waste. However, the reagent particles still have recycling value. Existing automatic dosing machines do not have a device for recycling and reusing reagent particles, resulting in waste of raw materials. Utility Model Content

[0006] In view of the defects or deficiencies in the existing technology, this utility model provides a dosing system for flotation process, which avoids pipeline blockage and reduces the waste of raw materials.

[0007] To achieve the above objectives, the present invention adopts the following technical solution:

[0008] An embodiment of this utility model provides a dosing system for a flotation process, including a reagent preparation unit, a reagent storage unit, and an automatic dosing unit, wherein the reagent preparation unit, the reagent storage unit, and the automatic dosing unit are connected in sequence via pipelines;

[0009] The reagent preparation unit includes a mixing tank and a self-cleaning filter. The mixing tank is connected to the self-cleaning filter through a reagent delivery pipeline. The self-cleaning filter is also connected to a return pipeline, which is equipped with a return pump. The other end of the return pipeline is located above the mixing tank.

[0010] Furthermore, it also includes a controller, which is electrically connected to the control drug preparation unit, the drug storage unit, and the automatic drug dispensing unit, respectively.

[0011] Furthermore, a water supply pipe is provided above the mixing tank, and a flow meter and an electric switch valve are installed on the water supply pipe.

[0012] Furthermore, a first level gauge is installed inside the mixing tank, and the first level gauge, flow meter, and electric switching valve are all electrically connected to the controller.

[0013] Furthermore, the self-cleaning filter is provided with a self-cleaning filter outlet, which is connected to the drug storage unit through a drug storage pipe.

[0014] Furthermore, the drug storage unit includes a drug storage box, which has a drug storage box inlet and a drug storage box outlet.

[0015] Furthermore, the inlet of the medicine storage tank is connected to the outlet of the self-cleaning filter through a medicine storage pipe, and a medicine storage pump is installed on the medicine storage pipe, which is electrically connected to the controller.

[0016] Furthermore, the discharge port of the medicine storage tank is connected to the automatic dosing unit through a dosing pipe, and a valve is installed on the dosing pipe, which is electrically connected to the controller.

[0017] Furthermore, a second level gauge is installed inside the medicine storage tank, and the second level gauge is electrically connected to the controller.

[0018] Furthermore, the automatic dosing unit includes multiple metering pumps, all of which are connected to the discharge port of the storage tank via dosing pipes, and the discharge ports of the metering pumps are connected to each dosing point of the flotation process via pipes.

[0019] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0020] This invention incorporates a self-cleaning filter and a return pipe between the self-cleaning filter and the mixing tank. A return pump is installed on the return pipe. The self-cleaning filter can filter out undissolved solid particles of the medicine after stirring and return them to the mixing tank for redissolution via the return pipe. This avoids pipe blockage and reduces waste of raw materials. Attached Figure Description

[0021] Figure 1This is a schematic diagram of the drug delivery system in an embodiment of the present invention;

[0022] Figure 2 This is a schematic diagram of the pharmaceutical preparation unit structure in an embodiment of the present invention;

[0023] Figure 3 This is a schematic diagram of the drug storage unit structure in an embodiment of the present invention;

[0024] Figure 4 This is a schematic diagram of the automatic dosing unit structure in an embodiment of this utility model;

[0025] The components include: 1. Drug preparation unit; 101. Mixing tank; 102. Self-cleaning filter; 103. Water supply pipe; 104. First level gauge; 105. Flow meter; 106. Electric switch valve; 2. Drug storage unit; 201. Drug storage tank; 202. Drug storage pump; 203. Valve; 3. Automatic dosing unit; 301. Metering pump; 4. Controller. Detailed Implementation

[0026] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0027] A typical embodiment of this utility model is as follows: Figure 1 As shown, a dosing system for a flotation process includes a reagent preparation unit 1, a reagent storage unit 2, an automatic dosing unit 3, and a controller 4. The reagent preparation unit 1, reagent storage unit 2, and automatic dosing unit 3 are connected sequentially via pipelines. The controller 4 is electrically connected to control the operation of the reagent preparation unit 1, reagent storage unit 2, and automatic dosing unit 3, thereby realizing the automatic preparation, storage, and dosing of reagents. The use of the controller 4 to realize the automatic preparation, storage, and dosing of reagents is existing technology and will not be described in detail again.

[0028] like Figure 2 As shown, the reagent preparation unit 1 includes a mixing tank 101 and a self-cleaning filter 102. A stirring motor is installed at the top of the mixing tank 101, and a stirring shaft is installed at the output end of the stirring motor. The stirring shaft extends into the mixing tank 101, and stirring blades are installed at the end of the stirring shaft. A water supply pipe 103 is installed above the mixing tank 101, which can add water to the mixing tank 101 during the reagent preparation process. A mixing tank outlet is installed at the bottom of the mixing tank 101, and the mixing tank outlet is connected to the inlet of the self-cleaning filter 102 through a reagent delivery pipe. A drug delivery pump is installed on the drug delivery pipe, and the drug delivery pump is electrically connected to a controller 4 for delivering the prepared reagent from the mixing tank 101 into the self-cleaning filter 102.

[0029] A first level gauge 104 is installed inside the mixing tank 101, and a flow meter 105 and an electric switch valve 106 are installed on the water supply pipe 103. The first level gauge 104, the flow meter 105 and the electric switch valve 106 are all connected to the controller 4. According to the required concentration of the reagent preparation, as well as the detected amount of water to be added and the liquid level of the mixing tank 101, the controller can control the electric switch valve 106 to add water to the mixing tank 101, thereby achieving stable and precise control of the reagent preparation concentration.

[0030] The self-cleaning filter 102 is a common self-cleaning filter on the market. It can filter impurities in liquid and automatically discharge the filtered impurities. The self-cleaning filter 102 is also provided with a self-cleaning filter outlet and a return outlet. The filtered impurities are discharged from the return outlet. The self-cleaning filter outlet is connected to the drug storage unit 2 through a drug storage pipe. The return outlet is connected to a return pipe. The other end of the return pipe is located above the stirring tank 101. A return pump is provided on the return pipe. The self-cleaning filter 102 can filter the drug flowing out of the stirring tank 101. The filtered drug flows into the drug storage unit 2. Some undissolved drug particles can flow back to the stirring tank 101 through the return pipe for secondary use.

[0031] like Figure 3 As shown, the medicine storage unit 2 includes a medicine storage tank 201, which has a medicine storage tank 201 inlet and a medicine storage tank 201 outlet. The medicine storage tank 201 inlet is connected to the outlet of the self-cleaning filter 102 through a medicine storage pipe. A medicine storage pump 202 is installed on the medicine storage pipe and is connected to the controller 4 to transport the filtered medicine to the medicine storage tank 201. The medicine storage tank 201 outlet is connected to the automatic dosing unit 3 through a dosing pipe. A valve 203 is installed on the dosing pipe and is connected to the controller 4 to control the connection and disconnection between the medicine storage tank 201 and the automatic dosing unit 3.

[0032] A second level gauge is installed inside the medicine storage tank 201. The second level gauge is electrically connected to the controller 4 and is used to detect the liquid level in the medicine storage tank 201. The liquid level in the medicine storage tank 201 is interlocked with the liquid levels of the medicine storage pump 202 and the stirring tank 101. When the liquid level in the medicine storage tank 201 is low, the medicine pump is automatically turned on to replenish the medicine in the medicine storage tank 201. The replenishment stops after the set liquid level is reached.

[0033] like Figure 4 As shown, the automatic dosing unit 3 includes multiple metering pumps 301. All metering pumps 301 are connected to the discharge port of the storage tank 201 through dosing pipes. The discharge port of the metering pump 301 is connected to each dosing point of the flotation through pipes. The metering pump 301 is connected to the controller 4. After the reagent in the storage tank 201 is accurately metered by the controller 4, it is pumped to each dosing point of the flotation by the metering pump 301.

[0034] The controller 4 is equipped with a touch screen, which allows for on-site operations such as parameter setting. It also supports Ethernet communication protocol, enabling the dosing system to interface with the plant control room, and reserves the software and hardware interfaces required for communication with the workshop-level DCS system.

[0035] During use, the solid powder of the reagent is added by vibration and weighing and enters the mixing tank 101. The system can control the electric switch valve 106 to accurately add water to the mixing tank 101 according to the reagent preparation requirements, the detected amount of water to be added, and the liquid level in the mixing tank 101, thereby achieving stable and accurate control of the reagent preparation concentration.

[0036] The prepared reagent is transported to the self-cleaning filter 102 for filtration through the reagent delivery pipeline. The return pipeline of the self-cleaning filter 102 returns some of the undissolved granular reagent solids to the reagent mixing tank 101 through the return pump, which can be stirred and recycled again, thereby avoiding pipeline blockage and reducing the waste of raw materials.

[0037] The qualified drug solution, after being filtered by the self-cleaning filter 102, is pumped to the storage tank 201 by the drug delivery pump. Combined with the second level gauge on the storage tank 201 and the pre-positioned valve 203, the liquid level in the storage tank 201 is maintained within a reasonable range, thus achieving the function of automatic drug replenishment.

[0038] The reagent solution is stored in the reagent tank 201, providing the reagents required by the automatic dosing system. The automatic dosing system includes metering pumps 301 with various ranges. By setting the metering pumps 301, appropriate dosages of reagents are delivered to the dosing points in the flotation process, ensuring the accuracy of dosing.

[0039] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A dosing system for a flotation process, characterized in that It includes a drug preparation unit, a drug storage unit, and an automatic drug dosing unit, wherein the drug preparation unit, the drug storage unit, and the automatic drug dosing unit are connected in sequence through pipelines; The reagent preparation unit includes a mixing tank and a self-cleaning filter. The mixing tank is connected to the self-cleaning filter through a reagent delivery pipeline. The self-cleaning filter is also connected to a return pipeline, which is equipped with a return pump. The other end of the return pipeline is located above the mixing tank.

2. A dosing system for a flotation process as claimed in claim 1, characterized in that, It also includes a controller, which is electrically connected to the drug preparation unit, the drug storage unit and the automatic drug dispensing unit.

3. A dosing system for a flotation process as claimed in claim 2, characterized in that, A water supply pipe is installed above the mixing tank, and a flow meter and an electric switch valve are installed on the water supply pipe.

4. A dosing system for a flotation process as claimed in claim 3, characterized in that, The mixing tank is equipped with a first level gauge, and the first level gauge, flow meter and electric switch valve are all electrically connected to the controller.

5. A dosing system for a flotation process as claimed in claim 1, characterized in that, The self-cleaning filter is provided with a self-cleaning filter outlet, which is connected to the drug storage unit through a drug storage pipe.

6. A reagent addition system for a flotation process as claimed in claim 2, characterised in that, The drug storage unit includes a drug storage box, which has a drug storage box inlet and a drug storage box outlet.

7. A reagent addition system for a flotation process as claimed in claim 6, characterised in that, The inlet of the medicine storage tank is connected to the outlet of the self-cleaning filter through a medicine storage pipe. A medicine storage pump is installed on the medicine storage pipe, and the medicine storage pump is electrically connected to the controller.

8. A dosing system for a flotation process as described in claim 7, characterized in that, The discharge port of the medicine storage tank is connected to the automatic dosing unit through a dosing pipe. A valve is installed on the dosing pipe, and the valve is electrically connected to the controller.

9. A reagent addition system for a flotation process as claimed in claim 6, characterised in that, The medicine storage tank is equipped with a second liquid level gauge, which is electrically connected to the controller.

10. A reagent addition system for a flotation process as claimed in claim 1, characterized in that, The automatic dosing unit includes multiple metering pumps, all of which are connected to the discharge port of the storage tank via dosing pipelines. The discharge ports of the metering pumps are connected to each dosing point of the flotation process via pipelines.

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