Device for recovering copper from vanadium titano-magnetite and selection and treatment method

Abstract

The invention discloses a device for recovering copper from vanadium titano-magnetite and a separation and treatment method, and relates to the technical field of mineral resource recovery, the device comprises a hydrocyclone, a concentrate discharge port is arranged in the middle of the bottom end of the hydrocyclone, a coarse material discharge pipe on the side of the bottom end of the hydrocyclone is connected with a tower mill, and a circulation assembly is connected between the tower mill and the hydrocyclone; comprising the following steps that firstly, crude copper slurry is conveyed into a cyclone from a slurry inlet pipe through an ore pulp pumping device, grading is conducted through the cyclone, the crude copper slurry overflows into a stirring barrel, settled sand automatically flows into a tower mill to be subjected to ore grinding, and ore is discharged through the tower mill and conveyed to the slurry inlet pipe through a pump body to be subjected to circulating grading; according to the method, all devices and processes run well, the copper grade can be improved to 13.59% or above from 0.3%, the grade of copper tailings is reduced to 0.04% or below, and the copper recovery rate reaches 92.86%; the sulfur grade can be improved from 4.36% to 49.35% or above, the sulfur tailing grade is reduced to 0.5% or below, the sulfur recovery rate reaches 86.63%, the effect is remarkable, and the product conversion rate of mineral resources is fully improved.

Description

Technical Field

[0001] The present invention relates to the technical field of mineral resource recovery, and particularly to a device and a beneficiation method for recovering copper from vanadium-titanium magnetite. Background Art

[0002] Vanadium-titanium magnetite is a composite ore rich in various metals such as iron, vanadium, and titanium. In addition to iron, vanadium, and titanium, such ores also contain valuable metals such as copper, cobalt, and nickel, and have high comprehensive utilization value. Chengde area is located in Hebei Province and has rich vanadium-titanium magnetite resources, among which associated copper ores are present. The copper minerals (such as chalcopyrite and bornite) in vanadium-titanium magnetite are finely disseminated and closely symbiotic with minerals such as magnetite and ilmenite. Traditional beneficiation methods are difficult to effectively separate them, resulting in low copper recovery rate. With the increasing global demand for copper resources, how to efficiently recover copper from vanadium-titanium magnetite has become the research focus. Therefore, a device and a beneficiation method for recovering copper from vanadium-titanium magnetite are provided herein. Summary of the Invention

[0003] Aiming at the deficiencies of the prior art, the present invention provides a pneumatic control valve for a dental machine system. All equipment and processes operate well, which can increase the copper grade from 0.3% to more than 13.59%, reduce the copper tailing grade to less than 0.04%, and the copper recovery rate reaches 92.86%; it can increase the sulfur grade from 4.36% to more than 49.35%, reduce the sulfur tailing grade to less than 0.5%, and the sulfur recovery rate reaches 86.63%. The effect is remarkable, which fully improves the product conversion rate of mineral resources and overcomes the deficiencies of the prior art.

[0004] In order to achieve the above object, the present invention adopts the following technical solutions:

[0005] A device for recovering copper from vanadium-titanium magnetite includes a hydrocyclone. A concentrate discharge port is provided in the middle of the bottom end of the hydrocyclone. A coarse material discharge pipe on the side of the bottom end of the hydrocyclone is connected to a tower mill. A circulation component is connected between the tower mill and the hydrocyclone. A stirring mechanism is provided below the concentrate discharge port. A discharge valve is installed on the stirring mechanism. The lower end of the discharge valve is connected to a first flotation unit, and the first flotation unit is connected to a second flotation unit.

[0006] As a further scheme of the present invention: An inlet slurry pipe is provided at the top of the hydrocyclone, and one end of the inlet slurry pipe is externally connected to a slurry pumping device.

[0007] As a further scheme of the present invention: The circulation component includes a discharge pipe connected to the discharge end of the tower mill. One end of the discharge pipe is connected to the suction end of a pump body. The discharge end of the pump body is connected to a return pipe, and one end of the return pipe is connected to the inlet slurry pipe.

[0008] As a further solution of the present invention: The stirring mechanism includes a stirring cylinder, a servo motor is installed on the outer wall of the bottom end of the stirring cylinder, the output end of the servo motor extends into the interior of the stirring cylinder and is provided with a rotating rod, and stirring blades are equidistantly arranged on the outer wall of the rotating rod.

[0009] As a further solution of the present invention: The first flotation unit includes a first guide pipe, one end of the first guide pipe is connected to the feed port of the first flotation column, a crude copper discharge pipe is arranged at the lower end of the first flotation column, and a valve is arranged on the crude copper discharge pipe.

[0010] As a further solution of the present invention: The second flotation unit includes a second flotation column, and one end of the crude copper discharge pipe is connected to the feed port of the second flotation column.

[0011] As a further solution of the present invention: A first microbubble generator is connected to the first flotation column, and a second microbubble generator is arranged on the second flotation column.

[0012] As a further solution of the present invention: A first spray pipe is arranged in the middle of the first flotation column, and a second spray pipe is arranged in the middle of the second flotation column.

[0013] As a further solution of the present invention: A copper concentrate diversion pipe is arranged at the top of the first flotation column, one end of the copper concentrate diversion pipe is connected to a filter press, a sulfur concentrate diversion pipe is arranged at the top of the second flotation column, and a tailings valve is arranged at the bottom end of the second flotation column.

[0014] A beneficiation method for recovering copper from vanadium-titanium magnetite includes the following steps:

[0015] Step 1: The crude copper slurry is conveyed from the feed pipe to the hydrocyclone through a pulp pumping device, classified by the hydrocyclone, the overflow enters the stirring cylinder, the sand settles and flows by gravity to the tower mill for grinding, the discharge of the tower mill is conveyed to the feed pipe through a pump body for circulating classification;

[0016] Step 2: The overflow of the hydrocyclone flows by gravity into the stirring cylinder, is mixed with the reagent and then enters the copper-sulfur separation process;

[0017] Step 3: Open the discharge valve, and the slurry enters the first flotation column for flotation. The copper concentrate floats and flows by gravity to the filtration workshop for filtration by a filter press to filter out the required copper concentrate solid.

[0018] Step 4: The flotation copper tailings enter the second flotation column from the crude copper discharge pipe, are mixed with the reagent and then undergo flotation. The sulfur concentrate floats and flows by gravity and is discharged from the sulfur concentrate diversion pipe, and the sulfur tailings are discharged from the tailings valve.

[0019] The beneficial effects of the present invention are:

[0020] All equipment and processes are operating well, which can increase the copper grade from 0.3% to over 13.59%, reduce the copper tailing grade to below 0.04%, and achieve a copper recovery rate of 92.86%; it can increase the sulfur grade from 4.36% to over 49.35%, reduce the sulfur tailing grade to below 0.5%, and achieve a sulfur recovery rate of 86.63%. The effect is remarkable, fully improving the product conversion rate of mineral resources. Description of the Drawings

[0021] Figure 1 It is a first - perspective three - dimensional structural schematic diagram of a device for recovering copper from vanadium - titanium magnetite proposed by the present invention.

[0022] Figure 2 It is a second - perspective three - dimensional structural schematic diagram of a device for recovering copper from vanadium - titanium magnetite proposed by the present invention.

[0023] Figure 3 It is a third structural schematic diagram of a device for recovering copper from vanadium - titanium magnetite proposed by the present invention.

[0024] Figure 4 It is a structural schematic diagram of the stirring mechanism of a device for recovering copper from vanadium - titanium magnetite proposed by the present invention.

[0025] Figure 5 It is a device for recovering copper from vanadium - titanium magnetite proposed by the present invention Figure 3 The enlarged structural schematic diagram at position A.

[0026] Figure 6 It is a partial structural schematic diagram of a device for recovering copper from vanadium - titanium magnetite proposed by the present invention.

[0027] In the figure: 1. Hydrocyclone; 2. Coarse material discharge pipe; 3. Return pipe; 4. Pump body; 5. Tower mill; 6. Second flotation column; 7. First flotation column; 8. Filter press; 9. Copper concentrate diversion pipe; 10. Stirring cylinder; 11. Feed pipe; 12. Discharge pipe; 13. Tailings valve; 14. Crude copper discharge pipe; 15. First guide pipe; 16. Sulfur concentrate diversion pipe; 17. Servo motor; 18. Fine material discharge port; 19. Rotating rod; 20. Stirring blade; 21. Discharge valve; 22. Second micro - bubble generator; 23. First micro - bubble generator; 24. Second spray pipe; 25. First spray pipe. Detailed Embodiments

[0028] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments.

[0029] Example 1, referring to Figures 1-6, A device for recovering copper from vanadium-titanium magnetite, comprising a hydrocyclone 1. A concentrate discharge port 18 is provided in the middle of the bottom end of the hydrocyclone 1. A coarse material discharge pipe 2 on the side of the bottom end of the hydrocyclone 1 is connected to a tower mill 5. A circulation component is connected between the tower mill 5 and the hydrocyclone 1. A stirring mechanism is provided below the concentrate discharge port 18. A discharge valve 21 is installed on the stirring mechanism. The lower end of the discharge valve 21 is connected to a first flotation unit, and the first flotation unit is connected to a second flotation unit.

[0030] A feed slurry pipe 11 is provided at the top of the hydrocyclone 1, and one end of the feed slurry pipe 11 is externally connected to a pulp pumping device.

[0031] The circulation component includes a discharge pipe 12 connected to the discharge end of the tower mill 5. One end of the discharge pipe 12 is connected to the suction end of a pump body 4. The discharge end of the pump body 4 is connected to a reflux pipe 3, and one end of the reflux pipe 3 is connected to the feed slurry pipe 11.

[0032] The stirring mechanism includes a stirring cylinder 10. A servo motor 17 is installed on the outer wall of the bottom end of the stirring cylinder 10. The output end of the servo motor 17 extends into the interior of the stirring cylinder 10 and is provided with a rotating rod 19. Stirring blades 20 are equidistantly arranged on the outer wall of the rotating rod 19. By driving the rotating rod 19 and the stirring blades 20 to rotate with the servo motor 17, the reagent and the pulp are fully mixed.

[0033] The first flotation unit includes a first guide pipe 15. One end of the first guide pipe 15 is connected to the feed inlet of a first flotation column 7. A coarse copper discharge pipe 14 is provided at the lower end of the first flotation column 7, and a valve is provided on the coarse copper discharge pipe 14. A first microbubble generator 23 is connected to the first flotation column 7, and a first spray pipe 25 is provided in the middle of the first flotation column 7.

[0034] The second flotation unit includes a second flotation column 6. One end of the coarse copper discharge pipe 14 is connected to the feed inlet of the second flotation column 6. A second microbubble generator 22 is provided on the second flotation column 6, and a second spray pipe 24 is provided in the middle of the second flotation column 6.

[0035] A copper concentrate guide pipe 9 is provided at the top end of the first flotation column 7. One end of the copper concentrate guide pipe 9 is connected to a filter press 8. A sulfur concentrate guide pipe 16 is provided at the top end of the second flotation column 6, and a tailing valve 13 is provided at the bottom end of the second flotation column 6.

[0036] A beneficiation and smelting method for recovering copper from vanadium-titanium magnetite includes the following steps:

[0037] Step 1: Feed the coarse copper slurry from the feed slurry pipe 11 into the hydrocyclone 1 through a pulp pumping device. Classify through the hydrocyclone 1. The overflow enters the stirring cylinder 10, and the sediment flows by gravity to the tower mill 5 for grinding. The discharge of the tower mill 5 is transported to the feed slurry pipe 11 through the pump body 4 for circulating classification;

[0038] Step 2: The overflow of the hydrocyclone 1 flows by gravity into the mixing tank 10, where it is mixed with reagents and then enters the copper-sulfur separation process;

[0039] Step 3: Open the discharge valve 21, and the slurry enters the first flotation column 7 for flotation. The copper concentrate floats upward and flows by gravity to the filtration workshop for pressure filtration by the filter press 8 to filter out the required solid copper concentrate.

[0040] Step 4: The flotation copper tailings enter the second flotation column 6 from the coarse copper discharge pipe 14, where they are mixed with reagents and then undergo flotation. The sulfur concentrate floats upward and is discharged from the sulfur concentrate diversion pipe 16, and the sulfur tailings are discharged from the tailings valve 13.

[0041] In the above Step 1, the tower mill 5 is used for ultrafine grinding to fully dissociate copper minerals from other minerals to achieve better separation effects. At the same time, the tower mill 5 adopts a vertical structure, and the energy consumption is reduced by using the gravity effect, with the energy consumption 30%-50% lower than that of traditional ball mills;

[0042] In the above Step 3, the copper concentrate flows by gravity to the filtration workshop for pressure filtration, saving the energy consumption of ore dressing. The filter cake after filtration by the filter press 8 has a low water content, enabling high-precision solid-liquid separation.

[0043] In the above Step 4, through re-flotation with the addition of reagents, sulfur minerals are separated out. Sulfur ore is an important industrial raw material and is widely used in fields such as chemical engineering and metallurgy. The re-selection of copper tailings realizes the concept of comprehensive utilization of resources.

[0044] The above is only the preferred specific implementation mode of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and inventive concept of the present invention, making equivalent substitutions or changes should be covered within the protection scope of the present invention.

Claims

1. An apparatus for recovering copper from vanadium-titanium magnetite, comprising a hydrocyclone (1), characterized in that, The middle of the bottom end of the cyclone (1) is provided with a concentrate discharge port (18). A coarse material discharge pipe (2) on the side of the bottom end of the cyclone (1) is connected to a tower mill (5). A circulation component is connected between the tower mill (5) and the cyclone (1). A stirring mechanism is arranged below the concentrate discharge port (18). A discharge valve (21) is installed on the stirring mechanism. The lower end of the discharge valve (21) is connected to a first flotation unit, and the first flotation unit is connected to a second flotation unit.

2. The device for recovering copper from vanadium-titanium magnetite according to claim 1, wherein The top of the cyclone (1) is provided with a pulp inlet pipe (11), and one end of the pulp inlet pipe (11) is externally connected to a pulp pumping device.

3. The device for recovering copper from vanadium-titanium magnetite according to claim 2, wherein, The circulation component includes a discharge pipe (12) connected to the discharge end of the tower mill (5). One end of the discharge pipe (12) is connected to the suction end of a pump body (4). The discharge end of the pump body (4) is connected to a reflux pipe (3), and one end of the reflux pipe (3) is connected to the pulp inlet pipe (11).

4. The device for recovering copper from vanadium-titanium magnetite according to claim 1, wherein The stirring mechanism includes a stirring cylinder (10). A servo motor (17) is installed on the outer wall of the bottom end of the stirring cylinder (10). The output end of the servo motor (17) extends into the interior of the stirring cylinder (10) and is provided with a rotating rod (19). Stirring blades (20) are equidistantly arranged on the outer wall of the rotating rod (19).

5. The device for recovering copper from vanadium-titanium magnetite according to claim 1, characterized in that, The first flotation unit includes a first guide pipe (15). One end of the first guide pipe (15) is connected to the feed inlet of a first flotation column (7). A crude copper discharge pipe (14) is arranged at the lower end of the first flotation column (7), and a valve is arranged on the crude copper discharge pipe (14).

6. The device for recovering copper from vanadium-titanium magnetite according to claim 5, characterized in that, The second flotation unit includes a second flotation column (6). One end of the crude copper discharge pipe (14) is connected to the feed inlet of the second flotation column (6).

7. The device for recovering copper from vanadium-titanium magnetite according to claim 6, characterized in that, A first microbubble generator (23) is connected to the first flotation column (7), and a second microbubble generator (22) is arranged on the second flotation column (6).

8. The device for recovering copper from vanadium-titanium magnetite according to claim 6, wherein, A first spray pipe (25) is arranged in the middle of the first flotation column (7), and a second spray pipe (24) is arranged in the middle of the second flotation column (6).

9. The device for recovering copper from vanadium-titanium magnetite according to claim 6, characterized in that, A copper concentrate diversion pipe (9) is arranged at the top end of the first flotation column (7). One end of the copper concentrate diversion pipe (9) is connected to a filter press (8). A sulfur concentrate diversion pipe (16) is arranged at the top end of the second flotation column (6), and a tailings valve (13) is arranged at the bottom end of the second flotation column (6).

10. A beneficiation and smelting method for recovering copper from vanadium-titanium magnetite using the device according to any one of claims 1-9, characterized in that, Including the following steps: Step 1: The crude copper slurry is conveyed from the pulp inlet pipe (11) to the cyclone (1) through a pulp pumping device, and is classified by the cyclone (1). The overflow enters the stirring cylinder (10), and the sand settles and flows by gravity to the tower mill (5) for grinding. The tower mill (5) discharges ore and is conveyed to the pulp inlet pipe (11) through the pump body (4) for circulating classification. Step 2: The overflow of the cyclone (1) flows by gravity into the stirring cylinder (10), is mixed with the reagent and then enters the copper-sulfur separation process. Step 3: The discharge valve (21) is opened, and the slurry enters the first flotation column (7) for flotation. The copper concentrate floats and flows by gravity to the filtration workshop for pressure filtration by the filter press (8) to filter out the required copper concentrate solid. Step 4: The flotation copper tailings enter the second flotation column (6) from the coarse copper discharge pipe (14), are mixed with the reagent and then subjected to flotation. The sulfur concentrate is discharged through the sulfur concentrate diversion pipe (16) by floating and flowing by itself, and the sulfur tailings are discharged from the tailings valve (13).

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