Ultrasonic-assisted oxidized ore surface agent stripping system

Abstract

The utility model discloses an ultrasonic-assisted oxidized ore surface agent stripping system which comprises a size mixing tank, an ultrasonic reaction tank and a high-speed stirring reaction tank which are respectively provided with a feed port I and a discharge port, a discharge port of the size mixing tank is connected with a feed port I of the ultrasonic reaction tank through a transmission pipe, and a discharge port of the ultrasonic reaction tank is connected with a feed port I of the high-speed stirring reaction tank through a transmission pipe. Through the auxiliary effect of ultrasonic waves, the agent stripping the surface of the zinc oxide concentrate is assisted, meanwhile, the interfacial tension and the membrane strength of the agent can be reduced, the agent can be stripped from the surface of the zinc oxide concentrate, and in the later high-speed stirring stage, agent convergence is reduced, and large liquid drops are formed; and the contact efficiency and stripping effect of the agent and the surface of the oxidized ore are improved, so that the stripping quality of the oxidized ore and the utilization rate of the agent are improved.

Description

Technical Field

[0001] This utility model relates to the field of mineral processing technology, specifically to a stripping system for oxide mineral surface agents based on ultrasonic assistance. Background Technology

[0002] In the process of mineral resource development, low-grade ores contain enormous economic value, but due to their high processing difficulty and low grade, they have never been effectively developed. In particular, after processing mixed concentrates using oxygen-sulfur separation processes, the surface of oxidized ores is often tightly coated with flotation reagents. This characteristic brings many challenges to the subsequent leaching process.

[0003] In the leaching process of zinc oxide concentrate slurry with direct mechanical stirring, the generation of viscous bubbles becomes an unavoidable problem due to the presence of flotation reagents on the oxide ore surface. These viscous bubbles not only reduce the utilization rate of the leaching tank and affect the leaching efficiency, but also bring additional difficulties to the subsequent treatment of the leachate.

[0004] More seriously, the total organic carbon (TOC) levels in the leachate often exceed the standard. Excessive TOC not only indicates the presence of excessive organic impurities in the leachate, but these impurities also undergo complex chemical reactions with zinc ions during electrolysis, resulting in a rough surface on the zinc sheets and affecting their quality. Furthermore, these organic impurities increase the difficulty of zinc sheet peeling, further reducing electrolysis efficiency.

[0005] Therefore, how to effectively solve the problem of flotation reagent coating on the surface of oxide ores, reduce the generation of viscous bubbles during the leaching process, and reduce the TOC content in the leachate has become an urgent technical challenge to be solved in the development of low-grade oxygen-sulfur mixed lead-zinc ore resources. Utility Model Content

[0006] This invention provides an ultrasonic-assisted stripping system for oxide mineral surface agents to solve the problems existing in the background art.

[0007] To solve the above-mentioned technical problems, the technical solution of this utility model is as follows:

[0008] An ultrasonic-assisted stripping system for oxide mineral surface agents includes a slurry preparation tank, an ultrasonic reaction tank, and a high-speed stirring reaction tank. Each of the slurry preparation tank, ultrasonic reaction tank, and high-speed stirring reaction tank has a feed inlet and a discharge outlet. The discharge outlet of the slurry preparation tank is connected to the feed inlet of the ultrasonic reaction tank through a transmission pipe, and the discharge outlet of the ultrasonic reaction tank is connected to the feed inlet of the high-speed stirring reaction tank through a transmission pipe.

[0009] Preferably, the system also includes a plate and frame filter press, which has an inlet II, a solid outlet, and a liquid outlet. The outlet of the high-speed stirring reaction tank is connected to the inlet II of the plate and frame filter press, and the liquid outlet is connected to the inlet I of the slurry mixing tank via a transmission pipe.

[0010] Preferably, the mixing tank is equipped with a stirrer I.

[0011] Preferably, a stirrer II is installed inside the ultrasonic reaction tank, and at least two ultrasonic devices are symmetrically arranged on the inner wall of the ultrasonic reaction tank.

[0012] Preferably, the high-speed stirring reaction tank is equipped with a stirrer III.

[0013] Preferably, control valves are provided at the discharge ports of the slurry mixing tank, the ultrasonic reaction tank, and the high-speed stirring reaction tank.

[0014] Preferably, the slurry concentration in the slurry mixing tank is around 30%.

[0015] Preferably, in the ultrasonic reaction tank, the ultrasonic power is between 1000-1200 W, the ultrasonic time is between 1-2 h, and the stirring speed is between 400 r / min and 600 r / min.

[0016] Preferably, in the high-speed stirring reaction tank, the high-speed stirring speed is between 1200 r / min and 1400 r / min, and the stirring time is between 0.5 h and 1 h.

[0017] This utility model has the following beneficial effects:

[0018] (1) With the assistance of ultrasound, the cavitation and thermal effects caused by ultrasound can help the agent to peel off the surface of zinc oxide concentrate. At the same time, it can reduce the interfacial tension and film strength of the agent, so that it can be peeled off from the surface of zinc oxide concentrate. The subsequent high-speed stirring stage reduces the aggregation of the agent into larger droplets, which prevents it from re-attaching to the surface of zinc oxide concentrate. This improves the contact efficiency and peeling effect between the agent and the surface of the oxide ore, thereby improving the peeling quality of the oxide ore and the utilization rate of the agent. Each reaction tank is equipped with a stirrer to ensure uniform mixing and reaction of the slurry and improve the processing efficiency of the system.

[0019] (2) By setting up a plate and frame filter press and its liquid outlet, the recycling of reagents is realized, production costs are reduced, and environmental pollution is reduced.

[0020] (3) The setting of control valves makes the operation of the system more flexible and controllable, and makes it easier to adjust and optimize according to actual needs. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the system structure of this utility model.

[0022] In the figure, 1-slurry preparation tank, 2-ultrasonic reaction tank, 3-high-speed stirring reaction tank, 4-feed inlet I, 5-discharge outlet, 6-plate and frame filter press, 7-feed inlet II, 8-solid outlet, 9-liquid outlet, 10-stirring I, 11-stirring II, 12-ultrasonic equipment, 13-stirring III, 14-control valve. Detailed Implementation

[0023] The specific embodiments of this utility model will be further described below with reference to the accompanying drawings. It should be noted that these descriptions are for the purpose of aiding understanding of this utility model, but do not constitute a limitation thereof. Furthermore, the technical features involved in the various embodiments of this utility model described below can be combined with each other as long as they do not conflict with each other.

[0024] An ultrasonic-assisted stripping system for oxide mineral surfaces, as shown in the attached figure. Figure 1 As shown, it includes a slurry preparation tank 1, an ultrasonic reaction tank 2, and a high-speed stirring reaction tank 3. Each of the slurry preparation tank 1, the ultrasonic reaction tank 2, and the high-speed stirring reaction tank is provided with a feed inlet 14 and a discharge outlet 5. The discharge outlet 5 of the slurry preparation tank 1 is connected to the feed inlet of the ultrasonic reaction tank 2 through a transmission pipe, and the discharge outlet 5 of the ultrasonic reaction tank 2 is connected to the feed inlet of the high-speed stirring reaction tank 3 through a transmission pipe.

[0025] It also includes a plate and frame filter press 6, which has a feed inlet II 7, a solid outlet 8 and a liquid outlet 9. The discharge port 5 of the high-speed stirring reaction tank 3 is connected to the feed inlet II 7 of the plate and frame filter press 6, and the liquid outlet 9 is connected to the feed inlet I 4 of the slurry tank 1 through a transmission pipe.

[0026] Slurry mixing tank 1: used for preliminary mixing of oxide ore and reagents to form slurry; the slurry mixing tank 1 is equipped with a stirrer I10 to ensure uniform mixing of oxide ore and reagents; the slurry mixing tank 1 has a feed inlet I4 for adding oxide ore and reagents; it also has a discharge outlet 5 for outputting the uniformly mixed slurry to the ultrasonic reaction tank 2.

[0027] Ultrasonic reaction tank 2: used to promote the stripping reaction between the reagent and the surface of the oxide ore under the action of ultrasound; the ultrasonic reaction tank 2 is equipped with a stirrer II 11 for further stirring the slurry to ensure that the ultrasound can act evenly on the entire slurry system; two ultrasonic devices 12 are symmetrically arranged on the inner wall of the ultrasonic reaction tank 2. Of course, the number can be appropriately increased according to the actual production situation to generate ultrasound; the ultrasonic reaction tank 2 has a feed inlet I 4, which is connected to the discharge outlet 5 of the slurry tank 1 through a transmission pipe; it also has a discharge outlet 5 for outputting the stripped slurry to the high-speed stirring reaction tank 3.

[0028] High-speed stirring reaction tank 3: used to stir the stripped slurry at high speed to further promote the separation of the reagent from the surface of the oxidized ore; the high-speed stirring reaction tank 3 is equipped with a stirrer Ⅲ13 to provide power for high-speed stirring; the high-speed stirring reaction tank 3 has a feed inlet Ⅰ4, which is connected to the discharge outlet 5 of the ultrasonic reaction tank 2 through a transmission pipe; it also has a discharge outlet 5, which is used to output the treated slurry to the plate and frame filter press 6.

[0029] Plate and frame filter press 6: Used for solid-liquid separation of the treated slurry to obtain stripped oxide ore and liquid containing reagents; Plate and frame filter press 6 has a feed inlet II 7, a solid outlet 8 and a liquid outlet 9; Solid outlet 8 is used to discharge the stripped oxide ore; Liquid outlet 9 transports the liquid containing reagents to the feed inlet I 4 of the slurry mixing tank 1 through a transmission pipe to realize the recycling of reagents.

[0030] Control valve 14: To ensure stable operation and flexible control of the system, control valve 14 is installed at the discharge port 5 of the slurry tank 1, ultrasonic reaction tank 2, and high-speed stirring reaction tank 3 to control the output flow rate and timing of the slurry.

[0031] Work process

[0032] As attached Figure 1 As shown, zinc oxide concentrate is first transported to slurry preparation tank 1 for slurry preparation, with a slurry concentration of about 30%. After slurry preparation, control valve 14 is opened to transport the slurry to ultrasonic reaction tank 2. The ultrasonic power is between 1000-1200 W, the ultrasonic time is between 1-2 h, and the stirring speed is between 400 r / min and 600 r / min. After the reaction, control valve 14 is opened to pump the slurry to high-speed stirring reaction tank 3. The high-speed stirring speed is between 1200 r / min and 1400 r / min, and the stirring time is between 0.5 h and 1 h. After the reaction, the slurry is transported to a plate and frame filter press for solid-liquid separation. Zinc oxide concentrate is leached after exiting from solid outlet 8, and the liquid is returned to slurry preparation tank 1 through liquid outlet 9 for slurry preparation.

Claims

1. A stripping system for oxide mineral surfaces based on ultrasound-assisted methods, characterized in that, The system includes a slurry preparation tank (1), an ultrasonic reaction tank (2), and a high-speed stirring reaction tank (3). Each of the slurry preparation tank (1), the ultrasonic reaction tank (2), and the high-speed stirring reaction tank (3) is provided with a feed inlet I (4) and a discharge outlet (5). The discharge outlet (5) of the slurry preparation tank (1) is connected to the feed inlet I (4) of the ultrasonic reaction tank (2) through a transmission pipe. The discharge outlet (5) of the ultrasonic reaction tank (2) is connected to the feed inlet I (4) of the high-speed stirring reaction tank (3) through a transmission pipe.

2. The ultrasonic-assisted stripping system for oxide mineral surfaces according to claim 1, characterized in that, It also includes a plate and frame filter press (6), which has a feed inlet II (7), a solid outlet (8) and a liquid outlet (9). The outlet (5) of the high-speed stirring reaction tank (3) is connected to the feed inlet II (7) of the plate and frame filter press (6), and the liquid outlet (9) is connected to the feed inlet I (4) of the slurry tank (1) through a transmission pipe.

3. The ultrasonic-assisted stripping system for oxide mineral surfaces according to claim 1, characterized in that, The mixing tank (1) is equipped with a stirrer I (10).

4. The ultrasonic-assisted stripping system for oxide mineral surfaces according to claim 2, characterized in that, The ultrasonic reaction tank (2) is equipped with a stirrer II (11), and at least two ultrasonic devices (12) are symmetrically arranged on the inner wall of the ultrasonic reaction tank (2).

5. The ultrasonic-assisted stripping system for oxide mineral surfaces according to claim 1, characterized in that, The high-speed stirring reaction tank (3) is equipped with a stirrer Ⅲ (13).

6. The ultrasonic-assisted stripping system for oxide mineral surfaces according to claim 1, characterized in that, Control valves (14) are provided at the discharge ports (5) of the slurry tank (1), ultrasonic reaction tank (2), and high-speed stirring reaction tank (3).

7. The ultrasonic-assisted stripping system for oxide mineral surfaces according to claim 1, characterized in that, In the slurry preparation tank (1), the slurry concentration is about 30%.

8. The ultrasonic-assisted stripping system for oxide mineral surfaces according to claim 1, characterized in that, In the ultrasonic reaction tank (2), the ultrasonic power is between 1000-1200 W, the ultrasonic time is between 1-2 h, and the stirring speed is between 400 r / min and 600 r / min.

9. The ultrasonic-assisted stripping system for oxide mineral surfaces according to claim 1, characterized in that, In the high-speed stirring reaction tank (3), the high-speed stirring speed is between 1200 r / min and 1400 r / min, and the stirring time is between 0.5 h and 1 h.

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