Multi-section type rusting device for iron-containing minerals

Abstract

The utility model relates to the technical field of iron-containing mineral corrosion, in particular to a multi-section corrosion device for iron-containing minerals, which comprises a stirring tank, a second-section bubble corrosion pipe group, a third-section corrosion storage tank, a cyclone and a heavy-phase storage tank, a feeding header pipe is arranged at the upper part of the stirring tank; the second-section bubble corrosion pipe group comprises a plurality of bubble spiral pipes; a main body of the bubble spiral pipe is of a spiral pipe structure, and a spiral air pipe is arranged in the spiral pipe; a plurality of air outlets are formed in the side wall of the spiral air pipe, the top end of the spiral air pipe is closed, and the lower end of the spiral air pipe communicates with a positive-pressure air pipe; the stirring tank is communicated with the three-section corrosion storage tank through the bubble spiral pipe; and the three-section corrosion storage tank is provided with a discharge pipe, and the discharge pipe is communicated with a feed port of the cyclone. By adopting the titanium-rich material corrosion treatment device, the overall corrosion treatment time can be greatly shortened, the corrosion treatment efficiency is remarkably improved, the titanium-rich material pumping-back probability is reduced, the energy consumption is remarkably reduced, and the production efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of iron-containing mineral corrosion technology, specifically to a multi-stage corrosion device for iron-containing minerals. Background Technology

[0002] Synthetic rutile, also known as artificial rutile, is a titanium-rich raw material produced by chemically processing ilmenite to separate most of the iron components from it. It is identical to natural rutile in composition and structural properties. Currently, common industrial production technologies for synthetic rutile both domestically and internationally include acid leaching. The traditional acid leaching process generally includes: (1) crushing the mineral into particles of a certain size; (2) adding the mineral and acidic rust solution into a reaction tank for stirring; (3) introducing air / oxygen during stirring, so that the iron in the iron-bearing mineral is oxidized and corroded, and the resulting tiny iron oxide particles fall off the ore body into the rust solution; (4) separating the ore body from the iron oxide slurry. The corrosion treatment in the above-mentioned prior art has the following problems: (1) The limited contact area between air and minerals leads to low oxidation corrosion efficiency. It is necessary to repeatedly mix the heavy phase after swirl corrosion treatment, which results in high energy consumption and low efficiency; (2) Most of the mixing tanks are open. If high concentration of oxygen is introduced, some oxygen that has not fully participated in the reaction will be directly dispersed, increasing production costs. Utility Model Content

[0003] To address the above shortcomings, this utility model provides a multi-stage corrosion device for iron-containing minerals to solve the aforementioned technical problems.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] A multi-stage corrosion device for iron-bearing minerals includes a stirring tank, a two-stage bubble corrosion tube assembly, a three-stage corrosion storage tank, a hydrocyclone, and a heavy phase storage tank. A main feed pipe is located at the top of the stirring tank. The two-stage bubble corrosion tube assembly includes several bubble spiral tubes. Each bubble spiral tube has a spiral tube structure, with a spiral air pipe inside. Several air outlets are located on the sidewalls of the spiral air pipes, and the lower end of each spiral air pipe is connected to a positive pressure air pipe. The bubble spiral tubes connect the stirring tank and the three-stage corrosion storage tank. The three-stage corrosion storage tank has a discharge pipe connected to the feed inlet of the hydrocyclone. The lower end of the hydrocyclone's heavy phase discharge outlet is connected to the feed inlet of the heavy phase storage tank. Optionally, the two-stage bubble corrosion tube assembly further includes a support column, which is located between the stirring tank and the three-stage corrosion storage tank. The bubble spiral tubes are coiled and fixed on the support column. Optionally, the lower end of the bubble spiral tube is connected to the feed pipe of the storage tank.

[0006] Optionally, the lower end of the feed pipe of the storage tank extends to the bottom of the three-section rust storage tank.

[0007] Optionally, several of the discharge pipes are arranged in a ring around the lower part of the three sections of rust storage tank.

[0008] Optionally, a connecting air pipe is provided between the mixing tank and the three-section rust storage tank, and an air valve is provided on the connecting air pipe.

[0009] Optionally, the heavy phase storage tank is equipped with a reflux pipe; the upper end of the reflux pipe is connected to the feed main pipe.

[0010] Optionally, the mixing tank is a closed mixing tank; a material valve is provided on the feed main pipe. Optionally, a discharge pipe is provided at the bottom of the heavy phase storage tank, and a valve is provided on the discharge pipe. Optionally, the spiral air pipe is spirally arranged synchronously with the bubble spiral tube; the spiral air pipe is fixed to the inner wall of the bubble spiral tube by several fixing rods.

[0011] Compared with the prior art, the beneficial effects of this utility model are:

[0012] The present invention can significantly improve the efficiency of rust treatment, reduce the probability of titanium-rich material backflow, greatly reduce production costs, and significantly improve production efficiency. The mixing tank of the present invention is a closed mixing tank. The gas after the reaction in the bubble spiral tube can be introduced into the mixing tank to continue the reaction and serve as a gas pressure source to realize the control of slurry flow rate. Attached Figure Description

[0013] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below.

[0014] Figure 1 This is a schematic diagram of the structure of the multi-segment corrosion system of this utility model;

[0015] Figure 2 This is a partial perspective view of the bubble spiral tube of this utility model. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0017] In the description of this utility model, it should be noted that the terms "inner", "front", "rear", "left", "right", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship that the utility model product is usually placed in during use. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0018] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set" and "connection" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0019] A multi-stage corrosion device for iron-bearing minerals, such as Figures 1-2 As shown, the device includes a main body 1, which, from top to bottom, comprises a mixing tank 1-1, a two-stage bubble corrosion tube assembly 1-2, a three-stage corrosion storage tank 1-3, a hydrocyclone 13, and a heavy phase storage tank 15. A feed main pipe 26 is provided at the upper part of the mixing tank 1-1, and a stirring device 5 is installed inside it, driven by a motor 2. The two-stage bubble corrosion tube assembly 1-2 includes several bubble spiral tubes 8. In this embodiment, to improve the stability of the bubble spiral tubes 8, the two-stage bubble corrosion tube assembly 1-2 also includes support columns 9, which are located between the mixing tank 1-1 and the three-stage corrosion storage tank 1-3. In this embodiment, several support columns 9 are provided, spaced in a circular pattern, forming several rings, evenly distributed on the bottom surface of the mixing tank 1-1. The presence of several bubble spiral tubes 8 improves processing efficiency.

[0020] The bubble spiral tube 8 is coiled and fixed on the support column 9. The main body of the bubble spiral tube 8 is a spiral tube structure, such as... Figure 2As shown, a spiral air tube 8-1 is provided inside the spiral tube, meaning that the spiral air tube 8-1 is spirally arranged synchronously with the bubble spiral tube 8. To improve the stability of the spiral air tube 8-1, in this embodiment, the spiral air tube 8-1 can be fixed to the inner wall of the bubble spiral tube 8 by several fixing rods 8-2; the side wall of the spiral air tube 8-1 is provided with several air outlet holes 8-1-1, and the top end of the spiral air tube 8-1 is closed to prevent liquid from entering the spiral air tube 8-1. The lower end is connected to a positive pressure air pipe 23, which is connected to a positive pressure air pump or an oxygen-containing compressed air tank. If the oxygen-containing compressed air tank is connected, a pressure stabilizing valve or a pressure regulating valve needs to be added. The bubble spiral tube 8 connects the stirring tank 1-1 and the three-section rust storage tank 1-3. In this embodiment, in order to facilitate the control of the air pressure of the three-section rust storage tank 1-3, the following scheme is preferred: the lower end of the bubble spiral tube 8 is connected to the storage tank inlet pipe 10, and the lower end of the storage tank inlet pipe 10 extends to the bottom of the three-section rust storage tank 1-3.

[0021] The structure of the bubble spiral tube 8 in this embodiment plays the following roles: 1. Several bubble spiral tubes 8 act as diversion tubes, improving reaction efficiency; 2. The spiral design increases the travel distance of the iron-containing mineral corrosion mixture; 3. Throughout the entire spiral flow, the spiral tube 8-1 can continuously blow out oxygen-containing gas, ensuring that the mineral particles in the fluid can fully contact oxygen and react, thereby improving processing efficiency; 4. By controlling the inlet and outlet air volume (bubble volume), the fluidity of the liquid can be increased, improving processing efficiency; 5. The liquid flows from top to bottom, while the gas (some bubbles) flows from bottom to top, giving all mineral particles in the fluid the "opportunity" to contact oxygen, reducing the phenomenon in traditional stirring schemes where some mineral particles cannot contact oxygen (i.e., a starvation reaction, resulting in incomplete reaction and low efficiency within a certain reaction time); 6. Some unreacted oxygen continues to flow into the stirring tank 1-1 and reacts through stirring.

[0022] The three-section rust storage tank 1-3 is equipped with a discharge pipe 12, which is connected to the inlet of the hydrocyclone 13; the lower end of the hydrocyclone 13, the heavy phase discharge port 14, is connected to the inlet of the heavy phase storage tank; and the light phase outlet 11 is connected to the iron oxide slurry collection pipe; in this embodiment, in order to improve the processing efficiency, a plurality of discharge pipes 12 are provided, and the plurality of discharge pipes 12 are arranged alternately in a circle along the lower part of the three-section rust storage tank 1-3; then the hydrocyclone 13 is also arranged in a corresponding circle.

[0023] Optionally, a connecting air pipe 7 is provided between the stirring tank 1-1 and the three-section rust storage tank 1-3. An air valve 6 is installed on the connecting air pipe 7, and the top of the connecting air pipe 7 is positioned above the highest liquid level 4 of the stirring tank 1-1. This arrangement serves to adjust the air pressure ratio between the stirring tank 1-1 and the three-section rust storage tank 1-3. By adjusting this air pressure ratio, the processing rate of the material in the two-section bubble rust tube assembly 1-2 can be adjusted. For example, during use, as gas continuously enters the stirring tank 1-1 from the two-section bubble rust tube assembly 1-2, the air pressure in the stirring tank 1-1 increases, which helps to improve the gas saturation in the liquid. Simultaneously, the increased air pressure in the stirring tank 1-1 can increase the flow velocity of the slurry within the bubble spiral tube 8. If environmental factors such as temperature affect the reaction efficiency, the air pressure in the three-section rust storage tank 1-3 can be increased, thereby reducing the flow velocity of the slurry within the bubble spiral tube 8, increasing the travel time of this section, and ensuring the reaction effect. Simultaneously, the efficiency of the hydrocyclone 13 can be adjusted by regulating the air pressure within the three-section corrosion storage tank 1-3. In this embodiment, pressure gauges 3 and 22 are respectively installed in the stirring tank 1-1 and the three-section corrosion storage tank 1-3, and pressure relief valves and safety valves (not shown) are also respectively installed. To facilitate control of the liquid level, connecting pipes 25 and 21 are respectively installed in the stirring tank 1-1 and the three-section corrosion storage tank 1-3 in this embodiment. In this embodiment, the heavy phase storage tank 15 can be selected to be an open configuration similar to the atmosphere. To improve the stability of the hydrocyclone 13, a reinforcing column 17 is provided between the three-section corrosion storage tank 1-3 and the heavy phase storage tank 15 in this embodiment, and the hydrocyclone 13 is fixed on the reinforcing column 17.

[0024] Optionally, the heavy phase storage tank 15 is equipped with a return pipe 18; the return pipe 18 is connected to a pressure pump 19 and communicates with the feed main pipe 26 through a connecting pipe 20. A material valve (not shown) is provided on the connecting pipe 20. To ensure the tightness of the mixing tank 1-1, a material valve 27 is provided on the feed main pipe 26 in this embodiment, and the material valve 27 is located between the mixing tank 1-1 and the connecting pipe 20. A discharge pipe 16 is provided at the lower part of the heavy phase storage tank 15, and a valve is provided on the discharge pipe 16.

[0025] The operating method of this utility model is as follows:

[0026] S1: Iron-containing minerals and acidic rust solution are added to the mixing tank and stirred to form an iron-containing mineral rust mixture. During the stirring process, oxygen-containing gas is introduced into the spiral gas pipe, and the gas pressure in the mixing tank is controlled to be lower than the gas pressure in the positive pressure gas pipe. The air bubbles entering the mixing tank from the bubble spiral pipe undergo a rust treatment with the iron-containing mineral rust mixture.

[0027] S2: The iron-containing mineral corrosion mixture enters the bubble spiral tube and flows downward spirally. The oxygen-containing gas flows upward spirally from the lower end of the spiral tube and enters the bubble spiral tube from its outlet. It mixes with the downward flowing iron-containing mineral corrosion mixture to carry out a two-stage corrosion treatment. The resulting bubbles flow upward into the stirring tank.

[0028] S3: The iron-containing mineral corrosion mixture after the second-stage corrosion treatment, along with some air bubbles, enters the third-stage corrosion storage tank for third-stage corrosion treatment;

[0029] S4: The iron-containing mineral corrosion mixture after three-stage corrosion treatment enters the hydrocyclone for separation, and after separation, titanium-rich material and iron oxide slurry are obtained; the titanium-rich material enters the heavy phase storage tank.

[0030] S5: Take samples of the titanium-rich material in the heavy phase storage tank for inspection. Based on the inspection results, the titanium-rich material in the heavy phase storage tank can be pumped back into the stirring tank. In this embodiment, if the slurry concentration reaches 8-13% and the iron content of the ore body is greater than 10%, the titanium-rich material in the heavy phase storage tank is pumped back into the stirring tank; and the above steps are repeated.

[0031] S6: Collect and process the iron oxide slurry and titanium-rich material separately.

[0032] This solution enables adjustable and controllable slurry flow rate. Furthermore, by employing a multi-stage corrosion treatment, when oxygen-containing gas is introduced, it can achieve the same or more complete reaction effect with a relatively lower oxygen concentration compared to traditional methods. This reduces the cost of oxygen raw materials, improves corrosion treatment efficiency, and offers better controllability.

Claims

1. A multi-stage rusting apparatus for iron-containing minerals, characterized by: The utility model provides a kind of two-stage bubble rusting pipe group, including stirring pool, three-stage rusting storage pool, cyclone and heavy phase storage pool;The upper portion of the stirring pool is provided with feed main pipe;The two-stage bubble rusting pipe group includes several bubble spiral pipes;The main body of the bubble spiral pipe is spiral pipe structure, and spiral pipe inside is provided with spiral air pipe;The lateral wall of the spiral air pipe is provided with several air outlet holes, and the lower end of the spiral air pipe is communicated with positive pressure air pipe;The bubble spiral pipe is communicated with the stirring pool and the three-stage rusting storage pool;The three-stage rusting storage pool is provided with discharge pipe, and the discharge pipe is communicated with the feed inlet of the cyclone;The lower end of the cyclone is communicated with the feed inlet of the heavy phase storage pool.

2. A multi-stage rusting apparatus for iron-containing minerals according to claim 1, characterized in that: The two-stage bubble rusting pipe group further includes support column, and the support column is arranged between the stirring pool and the three-stage rusting storage pool;The bubble spiral pipe is spirally fixed on the support column.

3. A multi-stage rusting apparatus for iron-containing minerals according to claim 1, characterized in that: The lower end of the bubble spiral pipe is communicated with storage pool feed pipe.

4. A multi-stage rusting apparatus for iron-containing minerals according to claim 3, characterized in that: The lower end of the storage pool feed pipe extends to the bottom of the three-stage rusting storage pool.

5. A multi-stage rusting apparatus for iron-containing minerals according to claim 1, characterized in that: Several discharge pipes are arranged in a circle along the lower portion of the three-stage rusting storage pool.

6. A multi-stage rusting apparatus for iron-containing minerals according to claim 1, characterized in that: The stirring pool and the three-stage rusting storage pool are provided with communication air pipe, and the communication air pipe is provided with air valve.

7. A multi-stage rusting apparatus for iron-containing minerals according to claim 1, characterized in that: The heavy phase storage pool is provided with reflux pipe, and the upper end of the reflux pipe is communicated with the feed main pipe.

8. A multi-stage rusting apparatus for iron-containing minerals according to claim 1, characterized in that: The stirring pool is airtight stirring pool, and the feed main pipe is provided with material valve.

9. A multi-stage rusting apparatus for iron-containing minerals according to claim 1, characterized in that: The lower portion of the heavy phase storage pool is provided with discharge pipe, and the discharge pipe is provided with valve.

10. A multi-stage rusting apparatus for iron-containing minerals according to claim 1, characterized in that: The spiral air pipe is spirally arranged synchronously with the bubble spiral pipe, and the spiral air pipe is fixed on the inner wall of the bubble spiral pipe by several fixing rods.

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