A deep cone thickener capable of emergency treatment of rare earth ore mother liquor

Abstract

This utility model discloses a deep cone thickener for emergency treatment of rare earth ore mother liquor, comprising a thickener and a flocculant mixing tank. The thickener is equipped with a mother liquor inlet pipe, a supernatant outlet pipe, a delivery pipe, and a lead pipe. The lead pipe is equipped with a water valve, and its upper end is connected to the supernatant outlet pipe, while its lower end is connected to the flocculant mixing tank. The flocculant mixing tank is connected to the mother liquor inlet pipe via the delivery pipe. The upper end of the lead pipe is positioned above the lower end of the flocculant mixing tank. This utility model has advantages such as convenient layout, cost-effectiveness, and the ability to provide emergency flocculant preparation during water outages. Furthermore, by connecting the flocculant to the mother liquor pipe and allowing it to enter the deep cone thickener along with the mother liquor, the mother liquor and flocculant are thoroughly mixed.

Description

Technical Field

[0001] This utility model relates to the field of rare earth ore processing equipment technology, and in particular to a deep cone thickener capable of emergency processing of rare earth ore mother liquor. Background Technology

[0002] Currently, most hydrometallurgical workshops in ion-adsorption rare earth mines employ an intermittent reaction clarification process. The process flow involves sequentially performing impurity removal / precipitation reactions on the mother liquor—static clarification—supernatant discharge (through a hanging pipe)—slurry discharge—aging and concentration. The process is relatively simple. However, due to the process requirements of the static clarification, slurry discharge, and aging steps, the product cycle is relatively long, thus limiting the processing capacity of this method.

[0003] With the extensive research and promotion of mining mechanization and automation technologies, deep cone thickeners, with their high efficiency, have begun to enter the field of vision of ion-adsorption rare earth mining enterprises.

[0004] For example, patent document CN118817992A discloses a method for determining the grade of rare earth concentrate by thickening machine pressure. By judging the relationship between the operating pressure of the thickener and the grade of the concentrate, the rare earth concentrate is stably output in the filtration system, and the final product grade is stable at over 58%.

[0005] Patent document CN207980515U discloses a thickener with automatic concentration adjustment and easy cleaning. It improves the way the slurry enters the thickener, improves the shape of the overflow plate, and adds an automatic lifting and alarm device for the thickener, thereby providing a thickener with automatic concentration adjustment and easy cleaning.

[0006] The above background information is provided only to aid in understanding the concept and technical solution of this utility model. It does not necessarily belong to the prior art of this patent application. In the absence of clear evidence that the above information was disclosed on the filing date of this patent application, the above background information should not be used to evaluate the novelty and inventiveness of this application. Utility Model Content

[0007] The main purpose of this utility model is to propose a deep cone thickener that is easy to arrange, cost-effective, and can be used for emergency flocculant preparation in the event of water outages to treat rare earth ore mother liquor.

[0008] Therefore, this utility model proposes a deep cone thickener capable of emergency treatment of rare earth ore mother liquor.

[0009] Preferably, the present invention may also have the following technical features:

[0010] A deep cone thickener capable of emergency treatment of rare earth ore mother liquor includes a thickener and a flocculant mixing tank. The thickener is equipped with a mother liquor inlet pipe and a supernatant outlet pipe, and also includes a delivery pipe and a liquid inlet pipe. The liquid inlet pipe is equipped with a water valve, and its upper end is connected to the supernatant outlet pipe, while its lower end is connected to the flocculant mixing tank. The flocculant mixing tank is connected to the mother liquor inlet pipe through the delivery pipe. The upper end of the liquid inlet pipe is located above its lower end.

[0011] Furthermore, the flocculant mixing tank is equipped with a water pump, and one end of the delivery pipe is connected to the outlet of the water pump, while the other end of the delivery pipe is connected to the mother liquor inlet pipe.

[0012] Furthermore, the ratio of the mother liquor flow rate in the mother liquor inlet pipe to the flocculant flow rate in the delivery pipe is 1000:0.5~1.5.

[0013] Furthermore, a control valve is provided at one end of the delivery pipe near the mother liquor inlet pipe.

[0014] Furthermore, the junction of the delivery pipe and the mother liquor inlet pipe leads to at least 1 to 2 bends from the outlet of the mother liquor inlet pipe.

[0015] Furthermore, the elbow is a 90° elbow.

[0016] Furthermore, the thickener has a vertically arranged central cylinder in the middle, and several inclined tubes are arranged around the central cylinder to form an inclined tube area. The inclined tube area separates the interior of the thickener into a supernatant area and a settling area, wherein the area above the inclined tubes is the supernatant area and the area below the inclined tubes is the settling area.

[0017] Furthermore, the distance from the lower end of the central cylinder to the lower end of the inclined tube is 1.5 to 2.5 times the height of the inclined tube region.

[0018] The advantages of this invention compared to existing technologies include: the liquid inlet of the liquid inlet pipe is located at a high position, allowing the supernatant to be drawn into the flocculant mixing tank for flocculant preparation via the height difference. The prepared flocculant is then pumped into the mother liquor inlet pipe through a delivery pipe. Utilizing the height difference to introduce the supernatant into the flocculant mixing tank reduces the length of the liquid inlet pipe and the investment in pumping equipment; it also reduces the need for a backup water tank, saving construction costs. Attached Figure Description

[0019] Figure 1 This is a cross-sectional structural diagram of the present invention.

[0020] Figure 2 This is a schematic diagram of the installation of the flocculant mixing tank of this utility model.

[0021] Figure 3 This is a schematic diagram of the mother liquor inlet pipe arrangement of this utility model. Detailed Implementation

[0022] The present invention will now be described in further detail with reference to specific embodiments and the accompanying drawings. It should be emphasized that the following description is merely exemplary and is not intended to limit the scope and application of the present invention.

[0023] Non-limiting and non-exclusive embodiments will be described with reference to the following figures, wherein the same reference numerals denote the same parts unless otherwise specifically stated.

[0024] like Figures 1-2 The deep cone thickener shown is capable of emergency treatment of rare earth ore mother liquor. It includes a thickener 1, a flocculant mixing tank 7, a delivery pipe 9, and a liquid inlet pipe 8. The thickener 1 is equipped with a mother liquor inlet pipe 5 and a supernatant outlet pipe 3. The upper end of the liquid inlet pipe 8 is connected to the supernatant outlet pipe 3, and the lower end is connected to the flocculant mixing tank 7. The supernatant outlet pipe 3 is used to transfer the supernatant from the upper part of the thickener 1, which is then led to the flocculant mixing tank 7 through the liquid inlet pipe 8. This allows the supernatant to be used in place of tap water to prepare flocculants during water outages in the production area, ensuring uninterrupted production. Simultaneously, to prevent the supernatant from flowing into the flocculant mixing tank 7 during normal operation, a water valve 81 is installed on the liquid inlet pipe 8. The flow rate of the supernatant through the liquid inlet pipe 8 is adjusted by opening or closing the water valve 81.

[0025] The inlet 82 of the liquid inlet pipe 8 is located at a high position, and the supernatant is led to the flocculant mixing tank 7 to prepare the flocculant through the height difference. Then, the prepared flocculant is pumped into the mother liquor inlet pipe 5 through the delivery pipe 9. That is, a water pump 72 is provided in the flocculant mixing tank 7, and one end of the delivery pipe 9 is connected to the outlet of the water pump 72, and the other end of the delivery pipe 9 is connected to the mother liquor inlet pipe 5. Specifically, the ratio of the mother liquor flow rate of the mother liquor inlet pipe 5 to the flocculant flow rate of the delivery pipe 9 is 1000:0.5~1.5. Preferably, a control valve 91 is provided at the end of the delivery pipe 9 near the mother liquor inlet pipe 5 to prevent the mother liquor in the mother liquor inlet pipe 5 from flowing back into the delivery pipe 9. The control valve 91 is a one-way valve.

[0026] Combination Figure 3To improve the thorough mixing of flocculant and mother liquor, the junction of the delivery pipe 9 and the mother liquor inlet pipe 5 undergoes at least 1-2 changes in mother liquor flow direction before reaching the outlet of the mother liquor inlet pipe 5. These changes enhance the interaction and fusion of the mother liquor and flocculant, ensuring thorough mixing as they flow from the outlet of the mother liquor inlet pipe 5 into the central cylinder 6 of the thickener 1. For example, in this embodiment, the mother liquor inlet pipe 5 has a horizontally positioned first horizontal pipe 51 before extending below the thickener 1. As the mother liquor inlet pipe 5 extends below the thickener 1, it connects to a vertical pipe 52 via a 90° bend to the top of the thickener 1; then, another 90° bend connects to a horizontally positioned second horizontal pipe 53 to the central cylinder 6 of the thickener 1. Thus, by connecting the delivery pipe 9 to the aforementioned first horizontal pipe 51, the flocculant and mother liquor mixture enters the thickener 1 after two 90° changes in direction. In some implementations, multiple thickeners 1 can be arranged to operate simultaneously, thereby improving work efficiency.

[0027] The thickener 1 has a vertically arranged central cylinder 6 in its middle. Several inclined tubes 2 are arranged around the central cylinder 6, forming an inclined tube area. This inclined tube area divides the interior of the thickener 1 into a supernatant area and a settling area. The area above the inclined tubes 2 is the supernatant area, and the area below the inclined tubes 2 is the settling area. Preferably, the distance from the lower end of the central cylinder 6 to the lower end of the inclined tube 2 is 1.5 to 2.5 times the height of the inclined tube area, preferably 2 times.

[0028] Those skilled in the art will recognize that numerous variations are possible with respect to the above description, and the embodiments and figures are merely for describing one or more specific implementations.

[0029] Although exemplary embodiments of the present invention have been described and illustrated, those skilled in the art will understand that various changes and substitutions can be made thereto without departing from the spirit of the present invention. Furthermore, many modifications can be made to adapt specific situations to the doctrine of the present invention without departing from the central concept of the present invention described herein. Therefore, the present invention is not limited to the specific embodiments disclosed herein, but may include all embodiments and equivalents that fall within the scope of the present invention.

Claims

1. A deep cone thickener for emergency treatment of rare earth ore mother liquor, comprising a thickener and a flocculant mixing tank, wherein the thickener is equipped with a mother liquor inlet pipe and a supernatant outlet pipe, characterized in that: It also includes a delivery pipe and a liquid inlet pipe. The liquid inlet pipe is equipped with a water valve, and its upper end is connected to the supernatant discharge pipe, and its lower end is connected to the flocculant mixing tank. The flocculant mixing tank is connected to the mother liquor inlet pipe through the delivery pipe. The upper end of the liquid inlet pipe is located above its lower end.

2. The deep cone thickener capable of emergency treatment of rare earth ore mother liquor as described in claim 1, characterized in that: The flocculant mixing tank is equipped with a water pump, and one end of the delivery pipe is connected to the outlet of the water pump, while the other end of the delivery pipe is connected to the mother liquor inlet pipe.

3. The deep cone thickener capable of emergency treatment of rare earth ore mother liquor as described in claim 1, characterized in that: The ratio of the mother liquor flow rate in the mother liquor inlet pipe to the flocculant flow rate in the delivery pipe is 1000:0.5~1.

5.

4. The deep cone thickener for emergency treatment of rare earth ore mother liquor as described in claim 1, characterized in that: A control valve is installed at one end of the delivery pipe near the mother liquor inlet pipe.

5. The deep cone thickener capable of emergency treatment of rare earth ore mother liquor as described in claim 1, characterized in that: The junction of the delivery pipe and the mother liquor inlet pipe leads to at least 1 to 2 bends from the outlet of the mother liquor inlet pipe.

6. The deep cone thickener for emergency treatment of rare earth ore mother liquor as described in claim 5, characterized in that: The elbow is a 90° elbow.

7. The deep cone thickener capable of emergency treatment of rare earth ore mother liquor as described in claim 1, characterized in that: The thickener has a vertically arranged central cylinder in the middle, and several inclined tubes are arranged around the central cylinder to form an inclined tube area. The inclined tube area separates the interior of the thickener into a supernatant area and a settling area. The area above the inclined tubes is the supernatant area, and the area below the inclined tubes is the settling area.

8. The deep cone thickener for emergency treatment of rare earth ore mother liquor as described in claim 7, characterized in that: The distance from the lower end of the central cylinder to the lower end of the inclined tube is 1.5 to 2.5 times the height of the inclined tube area.

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