A purification process for separating and recovering quartz sand from zirconium-titanium tailings

Abstract

This invention discloses a purification process for separating and recovering quartz sand from zirconium-titanium tailings, relating to the comprehensive recovery of quartz and zirconium-titanium tailings. Specifically, it includes step three: primary quartz sand and acid medium are added to a tank, and a motor, in conjunction with a rotating rod and drive assembly, moves a prying assembly back and forth on a mounting assembly, scooping up the primary quartz sand from the tank onto a corrugated plate. During this back-and-forth movement, and with the help of through-holes on the corrugated plate, the primary quartz sand is repeatedly washed, and the acid medium thoroughly neutralizes and washes the ore. This purification process for separating and recovering quartz sand from zirconium-titanium tailings utilizes the design of the inclined corrugated plate, which scoops up the primary quartz sand during movement and washes it repeatedly. This design allows for batch neutralization and washing of the primary quartz sand in the tank, ensuring more thorough neutralization and guaranteeing the quality of the quartz sand.

Description

Technical Field

[0001] This invention relates to the field of comprehensive recovery of quartz and zirconium-titanium tailings, specifically a purification process for separating and recovering quartz sand from zirconium-titanium tailings. Background Technology

[0002] With the continuous mining of zirconium-titanium ore resources, the amount of zirconium-titanium tailings generated is increasing day by day. The generation and accumulation of zirconium-titanium tailings not only cause great harm to the ecological environment, but also cause the loss of other valuable resources. From the perspective of environmental governance and resource utilization, it is necessary to make resource utilization of zirconium-titanium tailings. Due to the different genesis of zirconium-titanium ore, some zirconium-titanium tailings contain quartz ore. Less attention is paid to the associated quartz, and most of it is treated as tailings. With the rapid expansion of the scale of the domestic glass industry, the value of quartz resources is becoming increasingly prominent, and it is necessary to make full use of this part of the resources.

[0003] However, in the existing quartz sand neutralization and acid washing process, because the quartz sand is piled up together and is in the form of fine particles, it is difficult to ensure that the quartz sand at the bottom is neutralized properly. It takes a long time to ensure that the neutralization is complete, as the alkali solution slowly penetrates to the bottom to neutralize the quartz sand. Therefore, the efficiency is relatively low. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides a purification process for separating and recovering quartz sand from zirconium-titanium tailings, thus solving the technical problems mentioned in the background section.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a purification process for separating and recovering quartz sand from zirconium-titanium tailings, specifically including the following steps:

[0006] Step 1: Screen the zirconium-titanium tailings to separate the target mineral, quartz sand, from the metallic minerals.

[0007] Step 2: After screening, the mineral sample is subjected to magnetic separation to separate weakly magnetic and strongly magnetic metallic minerals, thus obtaining primary quartz sand.

[0008] Step 3: Primary quartz sand and acid medium are added into the tank, and the motor is turned on to rotate the rod and drive assembly, which in turn moves the agitator on the mounting assembly back and forth. The primary quartz sand in the tank is scooped up onto the corrugated plate. During the back-and-forth movement of the corrugated plate, the primary quartz sand is repeatedly washed using the through holes on the corrugated plate. The acid medium, a mixture of oxalic acid and hydrofluoric acid, is used to fully neutralize and wash the ore. After acid washing, qualified quartz concentrate is obtained.

[0009] As a further preferred embodiment of this technical solution, the motor is fixedly installed at the bottom of the tank, the rotating rod is fixedly connected to the output end of the motor, and the rotating rod is rotatably installed inside the tank. The drive component is located at the top of the rotating rod, the mounting component is located at the top of the inner cavity of the tank, and the actuating component is installed on the mounting component and connected to the drive component.

[0010] As a further preferred embodiment of this technical solution, a stirring plate is fixedly connected to the bottom of the outer wall of the rotating rod. The stirring plate is tilted in the direction of motor rotation and is located on the inner end of the agitator assembly.

[0011] As a further preferred embodiment of this technical solution, the drive assembly includes a disc fixedly mounted on the top of the rotating rod. A first positioning shaft is fixedly connected to the outer wall of the disc at a position off-center. Four sets of linkage rods are rotatably connected to the outer wall of the first positioning shaft from bottom to top. The other end of the linkage rod is rotatably connected to a push block through a second positioning shaft. The other end of the push block is fixedly connected to a fixed frame, and the actuating assembly is mounted on the fixed frame.

[0012] As a further preferred embodiment of this technical solution, the installation assembly includes a positioning frame fixedly installed on the top of the inner cavity of the tank, with sliding rods fixedly connected to both sides of the bottom of the positioning frame, and racks fixedly connected to both sides of the positioning frame.

[0013] As a further preferred embodiment of this technical solution, the actuating component includes a fixed frame that is fixedly installed on the inner side of the fixed frame. A movable frame is slidably connected to the inner side of the fixed frame in the vertical direction. Multiple sets of fixed rods are fixedly connected at equal intervals on both sides of the bottom of the movable frame. A wave plate is fixedly connected to the bottom of adjacent fixed rods. The two ends of the wave plate are inclined at the fixed rods, and several through holes are opened on the surface of the wave plate.

[0014] As a further preferred embodiment of this technical solution, a sleeve is slidably connected to the outer wall of the slide rod, and connecting shafts are fixedly connected to both ends of the outer wall of the sleeve. The inner connecting shaft is fixedly connected to the fixed frame, and a winding drum and a gear are rotatably connected to the outer connecting shaft. A connecting cable is wound on the winding drum, and the other end of the connecting cable is connected to the top of the moving frame through an installation rod. The top of the gear is engaged with the rack.

[0015] Compared with existing technologies, it has the following advantages:

[0016] This invention provides a purification process for separating and recovering quartz sand from quartz-associated zirconium-titanium tailings. The quartz sand in the zirconium-titanium tailings can be separated and used as a raw material for float glass. This allows a large amount of mineral resources that cannot generate economic benefits to be processed and utilized. The equipment required for this process is mature, the process flow is relatively simple, and it can be applied to large-scale production.

[0017] The wave plate design, with its inclined setting, can scoop up the primary quartz sand during movement and repeatedly wash it. This design allows the primary quartz sand in the tank to be neutralized and washed in batches, ensuring more thorough neutralization, guaranteeing the quality of the quartz sand, and improving product purity.

[0018] The spacing between adjacent corrugated plates and the through holes on the surface of the corrugated plates serve to discharge the primary quartz sand, changing the position of the quartz sand in the tank and preventing the accumulation of quartz sand from affecting the pickling process.

[0019] The rotation of the winding drum drives the winding and unwinding of the connecting cable, thereby realizing the reciprocating lifting and lowering of the moving frame, fixed rod, and corrugated plate. This design enables the equipment to scoop up and wash the primary quartz sand in different areas of the tank, greatly improving the efficiency of the pickling equipment. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0021] Figure 2 This is a schematic diagram of the structure of the driving component, the toggle component, and the mounting component in this invention;

[0022] Figure 3 This is a schematic diagram of the driving component in this invention;

[0023] Figure 4 This is a schematic diagram of the structure of the toggle component and the mounting component in this invention;

[0024] Figure 5 This is a schematic diagram of the toggle assembly in this invention.

[0025] In the diagram: 1. Tank body; 2. Motor; 3. Rotating rod; 4. Drive assembly; 5. Actuating assembly; 6. Mounting assembly; 11. Inlet; 12. Outlet; 31. Stirring plate; 41. Disc; 42. First positioning shaft; 43. Connecting rod; 44. Second positioning shaft; 45. Push block; 46. Fixed frame; 51. Fixed bracket; 52. Moving frame; 53. Fixed rod; 54. Corrugated plate; 55. Sleeve; 56. Connecting shaft; 57. Rewind drum; 58. Connecting cable; 59. Mounting rod; 510. Gear; 61. Positioning frame; 62. Slide rod; 63. Rack. Detailed Implementation

[0026] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0027] Example 1: Combining Figure 1 - Figure 5 As shown, the present invention provides a technical solution: a purification process for separating and recovering quartz sand from zirconium-titanium tailings, specifically including the following steps:

[0028] Step 1: Screen the zircon-titanium tailings to separate the target mineral, quartz sand, from zircon, rutile, and iron-bearing minerals.

[0029] The screening equipment in step one is a linear vibrating dewatering screen, which mainly removes fine particles of +0.2mm.

[0030] Step 2: After screening, the mineral sample is subjected to magnetic separation to separate weakly magnetic and strongly magnetic metallic minerals, thus obtaining primary quartz sand.

[0031] In the magnetic separation process of zirconium-titanium tailings, step two is a crucial step. This step can be configured based on the actual magnetic mineral content in the zirconium-titanium tailings. This configuration mainly includes two parts: a medium magnetic section (n = 1-2) and a strong magnetic section (p = 2-4). The strong magnetic section is characterized by a magnetic field strength greater than 1.3T, which results in higher beneficiation efficiency.

[0032] First, let's understand the principle of the intermediate magnetic separation section (n=1-2). In this section, the magnetic field strength is moderate, effectively separating magnetic minerals from zirconium-titanium tailings. By rationally setting the parameters of the magnetic separation equipment based on the actual differences in the magnetic properties of the minerals, effective recovery of the target minerals can be achieved. Furthermore, the intermediate magnetic separation process is highly flexible and can be adjusted according to changes in the magnetic properties of the minerals to achieve the best beneficiation results.

[0033] Next, the strong magnetic field stage (p=2-4) plays a crucial role. In this stage, the magnetic field strength is significantly increased, exceeding 1.3T, enabling the strong magnetic field equipment to capture finer-grained magnetic minerals. Compared to the medium magnetic field stage, the strong magnetic field stage offers higher beneficiation accuracy, further reducing metal loss in tailings. Simultaneously, the strong magnetic field stage places lower requirements on ore crushing and grinding, which helps reduce production costs.

[0034] In practical applications, the magnetic separation process should be rationally configured based on the mineral composition and properties of zirconium-titanium tailings, combining the advantages of medium and strong magnetic separation sections. By optimizing parameters such as the type of magnetic separation equipment, magnetic field strength, and slurry concentration, efficient recovery of zirconium-titanium tailings can be achieved. Furthermore, close monitoring of changes in the magnetic separation process and timely adjustment of process parameters are necessary to ensure stable production results.

[0035] In summary, in the magnetic separation process for zirconium-titanium tailings, the medium and strong magnetic sections in step two are configured according to the actual mineral content, which can improve beneficiation efficiency and reduce production costs. To obtain the best beneficiation results, it is essential to fully understand the properties and magnetic differences of the minerals and rationally select and adjust the parameters of the magnetic separation equipment. By optimizing the magnetic separation process, it is hoped that the efficient utilization of zirconium-titanium tailings resources can be achieved, contributing to the development of mineral resources in my country.

[0036] Step 3: Primary quartz sand and acid medium are added into tank 1, and motor 2 is turned on to drive rotating rod 3 and drive component 4 to move actuating component 5 back and forth on mounting component 6. The primary quartz sand in tank 1 is scooped up onto corrugated plate 54. During the back and forth movement of corrugated plate 54, the primary quartz sand is repeatedly washed by the through holes on corrugated plate 54. The acid medium is a mixture of oxalic acid and hydrofluoric acid to fully neutralize and wash the ore. After acid washing, qualified quartz concentrate is obtained.

[0037] In the metal processing industry, pickling is an important pretreatment step that effectively removes oxides and dirt from metal surfaces, preparing them for subsequent processing and coating. Among various pickling processes, the mixed acid of oxalic acid and hydrofluoric acid is particularly widely used. We will now describe the pickling process using this mixed acid in detail, including parameters such as dosage, time, temperature, and pH value.

[0038] First, let's look at the mixing ratio of oxalic acid and hydrofluoric acid used in the pickling process. The dosage of oxalic acid is 2-20 kg / t, and the dosage of hydrofluoric acid is 2-10 kg / t. This mixed acid is highly corrosive and can quickly remove oxides and dirt from metal surfaces. However, it is important to note that the mixing ratio of these two acids needs to be strictly controlled to ensure the pickling effect while avoiding over-corrosion and further corrosion of the metal by the hydrofluoric acid.

[0039] Next is the pickling time, which is generally 3-5 hours. This timeframe is sufficient for the mixed acid to fully exert its corrosive effect, removing oxides and dirt from the metal surface. However, excessively long pickling times may accelerate corrosion of the metal surface; therefore, it is necessary to reasonably control the pickling time in actual operation.

[0040] The pickling temperature is also an important parameter. In the pickling process described in this article, the pickling temperature is controlled at 65℃. This temperature ensures the activity of the mixed acid while preventing the re-generation of oxides on the metal surface due to excessively high temperatures. However, temperature control is not static and needs to be adjusted according to actual conditions to ensure optimal pickling results.

[0041] Finally, let's look at the pH value during the pickling process. In the pickling process described in this article, the pH value is controlled between 1 and 3. This pH range ensures the corrosive effect of the mixed acid without causing excessive corrosion to the metal. However, too low a pH value may corrode the metal; therefore, the pH value needs to be closely monitored and adjusted during actual operation.

[0042] In conclusion, the pickling process using a mixture of oxalic acid and hydrofluoric acid is of great significance in the metal processing industry. To achieve high-quality pickling results, it is necessary to strictly control parameters such as the dosage, time, temperature, and pH value of the mixed acid. Simultaneously, operators need to possess extensive experience and professional knowledge to ensure the safe and effective implementation of the pickling process. Through a reasonable pickling process, we can lay a solid foundation for subsequent processing and coating procedures on metal products, improving product quality and performance.

[0043] The main elemental results of the concentrate after acid washing of zirconium-titanium tailings are shown in Table 1.

[0044]

[0045] Example 2: Combination Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 As shown, based on Embodiment 1, the motor 2 is fixedly installed at the bottom of the tank 1. The top and bottom of the tank 1 are respectively equipped with an inlet 11 and an outlet 12, both of which are fitted with sealing valves. The inlet 11 facilitates the pouring of raw materials into the tank 1. The inlet 11 features a user-friendly design, making material pouring more convenient. Simultaneously, the inlet 11 is equipped with a sealing valve to effectively prevent material leakage during material entry and exit, ensuring the smooth progress of the pickling process. Furthermore, the bottom of the tank 1 is equipped with an outlet 12, whose main function is... The function is to smoothly discharge the quartz sand from the inside of the tank 1 after pickling. The design of the discharge port 12 also takes into account practicality and safety, ensuring the quality and output of the finished product. In addition, the discharge port 12 is also equipped with a sealing valve to ensure that the material will not leak accidentally during the discharge process, thereby reducing waste and improving production efficiency. The rotating rod 3 is fixedly connected to the output end of the motor 2, and the rotating rod 3 is rotatably installed inside the tank 1. The drive component 4 is set on the top of the rotating rod 3, the mounting component 6 is set on the top of the inner cavity of the tank 1, and the actuating component 5 is installed on the mounting component 6 and connected to the drive component 4.

[0046] A stirring plate 31 is fixedly connected to the bottom of the outer wall of the rotating rod 3. The stirring plate 31 is tilted in the direction of rotation of the motor 2 and is located on the inner side of the agitator 5. This facilitates the movement of the primary quartz sand on the inner side towards the agitator 5 on the outer side. The tilted design allows the stirring plate to generate strong centrifugal force during the stirring process, thus achieving a uniform mixing effect in a short time. Furthermore, the location of the stirring plate 31 on the inner side of the agitator 5 greatly improves the practicality of the mixing equipment. The agitator 5 moves the primary quartz sand on the inner side towards the agitator 5 on the outer side, ensuring that the quartz sand fully covers every corner during the stirring process, improving the overall mixing performance.

[0047] The drive assembly 4 includes a disc 41 fixedly installed on the top of the rotating rod 3. A first positioning shaft 42 is fixedly connected to the outer wall of the disc 41 at a position off-center. Four sets of connecting rods 43 are rotatably connected to the outer wall of the first positioning shaft 42 from bottom to top. The other end of the connecting rod 43 is rotatably connected to a push block 45 through a second positioning shaft 44. The other end of the push block 45 is fixedly connected to a fixed frame 46, and the actuating assembly 5 is installed on the fixed frame 46.

[0048] The mounting assembly 6 includes a positioning frame 61 fixedly installed on the top of the inner cavity of the tank body 1, with slide rods 62 fixedly connected to both sides of the bottom of the positioning frame 61, and racks 63 fixedly connected to both sides of the positioning frame 61.

[0049] The actuating component 5 includes a fixed frame 51 fixedly installed on the inner end of the fixed frame 46. A movable frame 52 is slidably connected to the inner end of the fixed frame 51 in the vertical direction. Multiple sets of fixed rods 53 are fixedly connected at equal intervals on both sides of the bottom of the movable frame 52. A wave plate 54 is fixedly connected to the bottom of adjacent fixed rods 53. The two ends of the wave plate 54 are inclined at the fixed rods 53, and several through holes are opened on the surface of the wave plate 54.

[0050] A sleeve 55 is slidably connected to the outer wall of the slide rod 62. A connecting shaft 56 is fixedly connected to both ends of the outer wall of the sleeve 55. The inner connecting shaft 56 is fixedly connected to the fixed frame 46. A take-up drum 57 and a gear 510 are rotatably connected to the outer connecting shaft 56. A connecting cable 58 is wound on the take-up drum 57. The other end of the connecting cable 58 is connected to the top of the movable frame 52 through the mounting rod 59. The top of the gear 510 is meshed with the rack 63.

[0051] In an embodiment of the invention, by turning on the motor 2, the rotating rod 3 and the disc 41 rotate synchronously, initiating the entire cleaning process. The coordinated operation of the rotating rod 3 and the disc 41 creates a highly efficient transmission system consisting of the connecting rod 43, the second positioning shaft 44, the pushing block 45, and the fixed frame 46. This system drives the fixed frame 51 in the actuating assembly 5 to move back and forth. The movement of the fixed frame 51 drives the movement of the moving frame 52, the fixed rod 53, and the wave plate 54. Particularly noteworthy is the design of the wave plate 54. Its inclined arrangement allows it to scoop up the primary quartz sand during movement, enabling repeated washing. This design allows the primary quartz sand in the tank 1 to be neutralized and cleaned in batches, ensuring more thorough neutralization and maintaining the quality of the quartz sand. The spacing between adjacent corrugated plates 54 and the through holes on the surface of corrugated plates 54 serve to discharge primary quartz sand, changing the position of quartz sand in the tank 1 and preventing quartz sand accumulation from affecting the pickling process. On the other hand, during the back-and-forth movement of the fixed frame 46, it works with the connecting shaft 56 to drive the sleeve 55 to slide back and forth on the slide rod 62. This design allows the sleeve 55 to work with the gear 510 and rack 63 to drive the winding drum 57 to rotate reciprocally. The rotation of the winding drum 57 drives the winding and unwinding of the connecting cable 58, thereby realizing the reciprocating lifting and lowering of the moving frame 52, the fixed rod 53, and the corrugated plates 54. This design enables the equipment to scoop up and wash the primary quartz sand in different areas of the tank 1, greatly improving the efficiency of the pickling equipment.

[0052] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A purification process for separating and recovering quartz sand from zirconium-titanium tailings, characterized in that: Specifically, the following steps are included: Step 1: Screen the zirconium-titanium tailings to separate the target mineral, quartz sand, from the metallic minerals. Step 2: After screening, the mineral sample is subjected to magnetic separation to separate weakly magnetic and strongly magnetic metallic minerals, thus obtaining primary quartz sand. Step 3: Primary quartz sand and acid medium are put into tank (1), and motor (2) is turned on. In conjunction with rotating rod (3) and drive assembly (4), the agitator (5) moves back and forth on the mounting assembly (6) to scoop up the primary quartz sand in tank (1) onto the corrugated plate (54). During the back and forth movement of the corrugated plate (54), the primary quartz sand is repeatedly washed with the through holes on the corrugated plate (54). The acid medium is a mixture of oxalic acid and hydrofluoric acid. After acid washing, qualified quartz concentrate is obtained. The motor (2) is fixedly installed at the bottom of the tank (1), the rotating rod (3) is fixedly connected to the output end of the motor (2), and the rotating rod (3) is rotatably installed inside the tank (1). The drive assembly (4) is set on the top of the rotating rod (3), the mounting assembly (6) is set on the top of the inner cavity of the tank (1), and the actuating assembly (5) is installed on the mounting assembly (6) and connected to the drive assembly (4). The drive assembly (4) includes a disc (41) fixedly mounted on the top of the rotating rod (3). A first positioning shaft (42) is fixedly connected to the outer wall of the disc (41) at a position off-center. Four sets of connecting rods (43) are rotatably connected to the outer wall of the first positioning shaft (42) from bottom to top. The other end of the connecting rod (43) is rotatably connected to a push block (45) through a second positioning shaft (44). The other end of the push block (45) is fixedly connected to a fixed frame (46), and the actuating assembly (5) is mounted on the fixed frame (46). The mounting assembly (6) includes a positioning frame (61) fixedly installed on the top of the inner cavity of the tank (1), with slide rods (62) fixedly connected to both sides of the bottom of the positioning frame (61), and racks (63) fixedly connected to both sides of the positioning frame (61). The actuating component (5) includes a fixed frame (51) fixedly installed on the inner end of the fixed frame (46). A movable frame (52) is slidably connected to the inner end of the fixed frame (51) in the vertical direction. Multiple sets of fixed rods (53) are fixedly connected at equal intervals on both sides of the bottom of the movable frame (52). A wave plate (54) is fixedly connected to the bottom of the adjacent fixed rods (53). The two ends of the wave plate (54) are located at the fixed rods (53) and are inclined. Several through holes are opened on the surface of the wave plate (54). A sleeve (55) is slidably connected to the outer wall of the slide rod (62). A connecting shaft (56) is fixedly connected to both ends of the outer wall of the sleeve (55). The inner connecting shaft (56) is fixedly connected to the fixed frame (46). A take-up drum (57) and a gear (510) are rotatably connected to the outer connecting shaft (56). A connecting cable (58) is wound on the take-up drum (57). The other end of the connecting cable (58) is connected to the top of the moving frame (52) through the mounting rod (59). The top of the gear (510) is meshed with the rack (63).

2. The purification process for separating and recovering quartz sand from zirconium-titanium tailings according to claim 1, characterized in that: A stirring plate (31) is fixedly connected to the bottom of the outer wall of the rotating rod (3). The stirring plate (31) is tilted in the direction of rotation of the motor (2) and is located on the inner end of the actuation assembly (5).

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