Cylinder ore washer for laterite-nickel ore

Abstract

The laterite-nickel ore cylindrical ore washer comprises a vertical frame, an inner cylinder, an outer cylinder, a driving part and a flushing part, the inner cylinder is rotationally connected with the vertical frame, and the inner cylinder comprises a first grating section, an ore washing cylinder section and a second grating section which are coaxially fixed in sequence in the material conveying direction; the outer cylinder is arranged on the peripheral surface of the first grating section and the peripheral surface of the second grating section in a sleeving manner, and a discharging area is formed between the outer cylinder and the first grating section as well as between the outer cylinder and the second grating section; the driving part is connected with the inner barrel and drives the inner barrel to rotate relative to the vertical frame, and the flushing part is arranged in the inner barrel in a penetrating mode and used for spraying water flow into the inner barrel so that mud ore can pass through the first grating section and the second grating section along with the water flow to reach the discharging area and be discharged; the mode that the grating sections are arranged at the two ends and the ore washing barrel section is arranged in the middle is adopted, ore materials are subjected to the three processes of primary screening, mixed ore washing and fine screening, and the ore washing effect can be effectively improved.

Description

Technical Field

[0001] The present application relates to the technical field of nickel ore washing, and in particular to a laterite nickel ore drum washing machine. Background Art

[0002] Laterite nickel ore is a loose, clay-like, multi-mineral aggregate formed by long-term geological processes such as weathering, leaching, dissemination, and alteration of nickel-bearing olivine bedrock in tropical or subtropical regions. It contains metal components such as nickel, cobalt, chromium, magnesium, and aluminum. Currently, the mainstream smelting process for laterite nickel ore is hydrometallurgical leaching with sulfuric acid under high-temperature and high-pressure conditions. Before acid leaching, the ore undergoes washing, gravity separation, ball milling, magnetic separation, and concentration to form a slurry for acid leaching. The washing process removes large gravels from the laterite nickel ore, while minerals containing metals such as nickel and cobalt are mixed with water to form a slurry. Currently, the equipment commonly used in this washing process is a drum washer.

[0003] Patent CN207577031U provides a drum ore washing machine, including a cylinder, wherein the left and right ends of the cylinder are respectively provided with supporting roller devices, the cylinder is arranged on the machine base through the supporting roller devices, the cylinder is also provided with a transmission device, the transmission device is connected to a driving device, the left side of the cylinder is connected to a feed port, the left side of the cylinder is a washing chamber, the right side of the cylinder is a screening chamber, and a stirring mechanism is also provided through the cylinder, the stirring mechanism includes a stirring shaft passing through the cylinder, the stirring shaft is parallel to the cylinder, the stirring shaft is arranged through brackets on the left and right sides of the cylinder, the left end of the stirring shaft is also connected to a power device arranged on the bracket, the left side of the stirring shaft located in the washing chamber is provided with a stirring bracket, and the right side of the stirring shaft located in the screening chamber is provided with a stirring plate.

[0004] However, the above-mentioned prior art has the following problems: the mud ore on the gravel is not completely cleaned by adopting the mode of the washing chamber plus the screening chamber, and mud ore still remains on the gravel after passing through the ore washer. Summary of the Invention

[0005] The purpose of this application is to overcome the above technical deficiencies and propose a laterite nickel ore drum washer to solve the technical problem that the mud ore on the gravel is not completely cleaned in the prior art.

[0006] In order to achieve the above technical objectives, this application adopts the following technical solutions: The present application provides a laterite nickel ore drum washing machine, comprising: Stand; The inner cylinder is rotatably connected to the vertical frame and includes a first ore washing cylinder section, a first grid section, a second ore washing cylinder section and a second grid section which are coaxially fixed in sequence along the material transport direction. An outer cylinder is sleeved on the outer circumference of the first grid segment and the second grid segment, and forms a discharge area between the outer cylinder and the first grid segment and the second grid segment; a driving member connected to the inner cylinder and driving the inner cylinder to rotate relative to the stand; and A flushing member is provided through the inner cylinder and is used for spraying water into the inner cylinder so that the mud ore passes through the first grid section and the second grid section along with the water flow to the discharge area and is discharged.

[0007] In some embodiments, a rotating bearing is provided between the stand and the inner tube, and the rotating bearing has a first part and a second part that can rotate relative to each other, the first part is fixed to the stand, and the second part is fixed to the inner tube.

[0008] In some embodiments, the inner cylinder is tilted, the first grid section is higher than the second grid section, the open end of the first ore washing cylinder section is a feed port, and the open end of the second grid section is a gravel discharge port.

[0009] In some embodiments, the inner diameters of the first ore washing barrel section and the second ore washing barrel section are larger than the inner diameters of the first grid section and the second grid section.

[0010] In some embodiments, the first ore washing barrel section and the second ore washing barrel section are cylindrical, and several disturbance bars are axially arranged on the inner walls of the first ore washing barrel section and the second ore washing barrel section, and the disturbance bars protrude relative to the inner walls of the first ore washing barrel section and the second ore washing barrel section.

[0011] In some embodiments, one end of the disturbance bar close to the gravel discharge outlet is inclined toward the rotation direction of the first ore washing barrel section and the second ore washing barrel section, forming an angle with the busbar of the first ore washing barrel section and the second ore washing barrel section, and the angle is smaller than the inclination angle of the first ore washing barrel section and the second ore washing barrel section relative to the horizontal plane.

[0012] In some embodiments, two outer cylinders are included, which are respectively sleeved on the first grid segment and the second grid segment, and a mud discharge outlet is opened at the bottom of the outer cylinder.

[0013] In some embodiments, the driving member includes a driver and a driving wheel. The output end of the driver is coaxially fixed with the driving wheel, and the driving wheel abuts against the inner cylinder.

[0014] In some embodiments, the flushing component includes a water supply pump and a water supply pipe, and the water supply pipe is sequentially arranged through the first ore washing barrel section, the first grid section, the first ore washing barrel section, the second ore washing barrel section and the second grid section. The water supply pipe is provided with a plurality of water spray holes for spraying water into the first ore washing barrel section, the first grid section, the ore washing barrel section and the second grid section, and the water supply pump is connected to the water supply pipe.

[0015] In some embodiments, the first grating section includes a plurality of first grating plates and a first fixing ring, the first grating plates are arranged at intervals around the material transport direction, and the first fixing ring is fixed to the first grating plates so that all the first grating plates are arranged to form a cylindrical shape; the second grating section includes a plurality of second grating plates and a second fixing ring, the second grating plates are arranged at intervals around the material transport direction, and the second fixing ring is fixed to the second grating plates so that all the second grating plates are arranged to form a cylindrical shape.

[0016] Compared with the prior art, the laterite nickel ore drum washing machine provided by the present application includes a stand, an inner drum, an outer drum, a driving member and a flushing member. The inner drum is rotatably connected to the stand, and includes a first washing drum section, a first grid section, a second washing drum section and a second grid section that are coaxially fixed in sequence along the material transport direction. The outer drum is sleeved on the outer circumference of the first grid section and the second grid section, and a discharge area is formed between the outer drum and the first grid section and the second grid section; the driving member is connected to the inner drum to drive the inner drum to rotate relative to the stand, and the flushing member is passed through the inner drum and is used to spray water into the inner drum so that the mud ore flows with the water. The nickel ore passes through the first grid section and the second grid section to the discharge area and is discharged; the nickel ore first passes through the first ore washing tube section, and the flushing part sprays water to clean the mud ore coated on the gravel, and is discharged from the first grid section to the outer tube, and most of the mud ore leaks into the outer tube with the water through the grid of the first grid section; the gravel with residual mud ore enters the second ore washing tube section for washing, and the flushing part sprays water to clean the mud ore coated on the gravel, and is discharged from the second grid section to the outer tube. The present application adopts the method of grid sections at both ends and ore washing tube section in the middle, so that the ore material undergoes the process of primary screening and fine screening, which can effectively improve the ore washing effect.

[0017] The above description is only an overview of the technical solution of this application. In order to enable a clearer understanding of the technical means of this application and to implement it according to the contents of the description, the preferred embodiments of this application are described in detail below with reference to the accompanying drawings. The specific implementation methods of this application are detailed in the following embodiments and their accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1This is a schematic diagram of the structure of the laterite nickel ore drum washing machine provided by this application; Figure 2 yes Figure 1 Schematic cross-section of the inner and outer cylinders; Figure 3 yes Figure 1 Schematic diagram of the structure of the middle inner cylinder.

[0019] Description of reference numerals: 1-stand, 2-inner cylinder, 21-first ore washing cylinder section, 22-first grid section, 221-first grid plate, 222-first fixing ring, 23-second ore washing cylinder section, 24-second grid section, 241-second grid plate, 242-second fixing ring, 25-disturbance bar, 3-outer cylinder, 31-mud discharge outlet, 4-driving element, 41-driver, 42-driving wheel, 5-flushing element, 51-water supply pipe. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical solutions and advantages of this application more clearly understood, the present application is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this application and are not intended to limit this application.

[0021] See also Figure 1 、 Figure 2 、 Figure 3 , Figure 1 This is a structural diagram of a laterite nickel ore drum washing machine in one embodiment of the present application; Figure 2 for Figure 1 Schematic cross-section of the inner and outer cylinders; Figure 3 yes Figure 1 Schematic diagram of the structure of the middle inner cylinder.

[0022] The present application provides a laterite nickel ore drum washer, comprising: a stand 1, an inner drum 2, an outer drum 3, a driving member 4 and a flushing member 5. The inner drum 2 is rotatably connected to the stand 1, and comprises a first washing drum section 21, a first grid section 22, a second washing drum section 23 and a second grid section 24 coaxially fixed in sequence along the material transport direction. The outer drum 3 is sleeved on the outer circumferential surface of the first grid section 22 and the second grid section 24, and a discharge area is formed between the outer drum 3 and the first grid section 22 and the second grid section 24; the driving member 4 is connected to the inner drum 2, driving the inner drum 2 to rotate relative to the stand 1; the flushing member 5 is penetrated by the inner drum 2, and is used to spray water into the inner drum 2, so that the mud ore passes through the first grid section 22 and the second grid section 24 with the water flow and falls into the discharge area and is discharged.

[0023] In the present application, nickel ore is passed into the inner cylinder 2, first passing through the first ore washing cylinder section 21, and the flushing part 5 sprays water to clean the mud ore coated on the gravel, and is discharged from the first grid section 22 to the outer cylinder. Most of the mud ore passes through the grid of the first grid section 22 with the water and leaks into the outer cylinder 3; the gravel with residual mud ore attached enters the second ore washing cylinder section 23 for ore washing, and the flushing part 5 sprays water to clean the mud ore coated on the gravel, and is discharged from the second grid section 24 to the outer cylinder. The present application adopts the method of connecting two groups of ore washing cylinder sections with the middle grid section, so that the ore material undergoes the process of primary screening and fine screening, which can effectively improve the ore washing effect.

[0024] In this embodiment, the stand 1 is fixed on a reliable surface, and a rotation bearing is provided between the stand 1 and the inner tube 2. The rotation bearing comprises a first portion and a second portion that are capable of relative rotation. The first portion is fixed to the stand 1, and the second portion is fixed to the inner tube 2. The rotation bearing enables the inner tube 2 to be rotatably connected to the stand 1.

[0025] In order to prevent the rotary bearing from affecting the slurry discharge effect of the first grid segment 22 and the second grid segment 24 , the second portion of the rotary bearing is fixed to the second ore washing barrel segment 23 .

[0026] In this embodiment, in order to allow the ore to move in the inner tube 2, the inner tube 2 is tilted, the first grid section 22 is slightly higher than the second grid section 24, the open end of the first ore washing tube section 21 is the feed port, and the open end of the second grid section 24 is the gravel discharge port, that is, the end of the first ore washing tube section 21 away from the first grid section 22 is the feed port, and the end of the second grid section 24 away from the second ore washing tube section 23 is the gravel discharge port.

[0027] In this embodiment, the first grid section 22 includes a plurality of first grid plates 211 and a first fixing ring 212. The first grid plates 211 are spaced apart in the material transport direction, and the first fixing ring 212 is fixed to the first grid plates 211 so that all the first grid plates 211 are arranged to form a cylindrical shape. The mud and ore fall into the outer cylinder 3 through the gaps between the first grid plates 211.

[0028] In this embodiment, the inner diameter of the first ore-washing barrel section 21 is larger than the inner diameter of the first grid section 22. This allows the second ore-washing barrel section 21 to accommodate gravel with mud ore attached and cleaning water, so as to clean the gravel with mud ore attached. In the specific configuration, both ends of the first ore-washing barrel section 21 extend radially inward to form a water retaining ring, and the inner diameter of the first grid section 22 is set to be the same as the inner diameter of the water retaining ring. It is worth noting that by providing water retaining rings at both ends of the first ore-washing barrel section 21, a certain height of cleaning water can be stored in the first ore-washing barrel section 21. When the first ore-washing barrel section 21 rotates, the cleaning water and the mud ore are fully mixed to form a slurry, which can also fully clean the gravel in the mud ore.

[0029] Similarly, in this embodiment, the inner diameter of the second ore-washing barrel section 23 is larger than the inner diameters of the first grid section 22 and the second grid section 24. This allows the second ore-washing barrel section 23 to accommodate gravel with mud attached and wash water, thereby cleaning the mud-attached gravel. It will be readily understood that the structure of the second ore-washing barrel section 23 can be substantially the same as that of the first ore-washing barrel section 21.

[0030] In this embodiment, the first ore-washing barrel section 21 and the second ore-washing barrel section 23 are cylindrical, and a plurality of disturbance bars 25 are provided on the inner wall of the second ore-washing barrel section 23 substantially along the axial direction. The disturbance bars 25 protrude relative to the inner walls of the first ore-washing barrel section 21 and the second ore-washing barrel section 23. When gravel with mud adhering to it passes through the first ore-washing barrel section 21 and the second ore-washing barrel section 23, it can be driven by the disturbance bars 25 to rotate with the second ore-washing barrel section 23 to a certain height and then fall back, promoting a greater impact between the gravel and the water flow, thereby separating the mud coated on the gravel from the gravel.

[0031] In this embodiment, the ends of the disturbance bars 25 near the gravel discharge outlet are inclined toward the rotational directions of the first and second ore-washing tube sections 21, 23, respectively, forming angles with the generatrixes of the first and second ore-washing tube sections 21, 23, respectively. These angles are smaller than the angles of inclination of the first and second ore-washing tube sections 21, 23 relative to the horizontal plane. This allows gravel with mud to remain in the first and second ore-washing tube sections 21, 23 for a longer period of time, thereby effectively flushing the gravel, reducing water waste, and improving ore washing efficiency.

[0032] It should be noted that, when it is necessary to speed up the discharge speed of the first ore washing drum section 21 and the second ore washing drum section 23 , the rotation direction of the first ore washing drum section 21 and the second ore washing drum section 23 may be changed.

[0033] In this embodiment, the second grid section 24 includes a plurality of second grid plates 241 and a second fixing ring 242. The second grid plates 241 are spaced apart in the material transport direction. The second fixing ring 242 is fixed to the second grid plates 241 so that all the second grid plates 241 are arranged to form a cylindrical shape. The mud and ore fall into the outer cylinder 3 through the gaps between the second grid plates 241.

[0034] In this embodiment, two outer cylinders 3 are included, which are respectively mounted on the first grid segment 22 and the second grid segment 24. A mud discharge outlet 31 is opened at the bottom of the outer cylinder 3, and the mud falling into the outer cylinder 3 is discharged through the mud discharge outlet 31.

[0035] In this embodiment, the driving member 4 includes a driver 41 and a driving wheel 42. The output end of the driver 41 is coaxially fixed with the driving wheel 42, and the driving wheel 42 abuts against the inner tube 2. The output end of the driver 41 rotates, driving the inner tube 2 to rotate via the driving wheel 42.

[0036] It should be noted that the driver 41 has various implementations. In this embodiment, the driver 41 includes a motor, a coupling, and a reducer. The motor, the coupling, and the reducer are connected in sequence to form a rotation output.

[0037] In this embodiment, the flushing component 5 includes a water supply pump (not shown) and a water supply pipe 51. The water supply pipe 51 is sequentially arranged through the first ore washing barrel section 21, the first grid section 22, the second ore washing barrel section 23 and the second grid section 24. The water supply pipe 51 is provided with a plurality of water spray holes for spraying water into the first ore washing barrel section 21, the first grid section 22, the second ore washing barrel section 23 and the second grid section 24. The water supply pump is connected to the water supply pipe 51.

[0038] In order to better understand the present application, the technical solution of the present application is described in detail below with reference to the accompanying drawings: The ore material enters the first ore washing tube section 21 from the feed port, and the water supply pipe 51 sprays water into the first ore washing tube section 21. The disturbance bar 25 drives the remaining gravel and the mud ore adhering to the surface of the gravel to rotate to a high place with the first ore washing tube section 21, and then falls down, forming an impact with the water flow and the inner wall of the first ore washing tube section 21, so that most of the mud ore adhering to the surface of the gravel falls off, and the mud ore falls into the outer tube 3 through the gap on the first grid section 22 with the water flow and is discharged; the remaining gravel and the mud ore adhering to the surface of the gravel move to The second ore washing barrel section 23 and the disturbance bar 25 drive the remaining gravel and the mud ore adhering to the surface of the gravel to rotate to a high place along with the second ore washing barrel section 23, and then fall down, forming an impact with the water flow and the inner wall of the second ore washing barrel section 23, so that the mud ore adhering to the surface of the gravel falls off and moves to the second grid section 24. The washed mud ore falls into the outer barrel 3 through the gap on the second grid section 24 with the water flow and is discharged, and the gravel is discharged through the gravel discharge port of the second grid section 24, thereby completing the ore washing process of the laterite nickel ore.

[0039] Beneficial effects of the present application: The laterite nickel ore drum washing machine provided by the present application includes a stand, an inner drum, an outer drum, a driving member and a flushing member. The inner drum is rotatably connected to the stand, and includes a first washing drum section, a first grid section, a second washing drum section and a second grid section coaxially fixed in sequence along the material transportation direction. The outer drum is sleeved on the outer circumference of the first grid section and the second grid section, and a discharge area is formed between the outer drum and the first grid section and the second grid section; the driving member is connected to the inner drum to drive the inner drum to rotate relative to the stand, and the flushing member is penetrated by the inner drum and is used to spray water into the inner drum so that the mud ore flows with the water. The nickel ore passes through the first grid section and the second grid section to the discharge area and is discharged; the nickel ore first passes through the first ore washing tube section, and the flushing part sprays water to clean the mud ore coated on the gravel, and is discharged from the first grid section to the outer tube, and most of the mud ore leaks into the outer tube with the water through the grid of the first grid section; the gravel with residual mud ore enters the second ore washing tube section for washing, and the flushing part sprays water to clean the mud ore coated on the gravel, and is discharged from the second grid section to the outer tube. The present application adopts the method of grid sections at both ends and ore washing tube section in the middle, so that the ore material undergoes the process of primary screening and fine screening, which can effectively improve the ore washing effect.

[0040] The specific implementation methods of the present application described above do not limit the scope of protection of the present application. Any other corresponding changes and modifications made based on the technical concept of the present application should be included in the scope of protection of the claims of the present application.

Claims

1. A laterite nickel ore drum washing machine, characterized in that: It includes: Stand; The inner cylinder is rotatably connected to the vertical frame and includes a first ore-washing cylinder section, a first grid section, a second ore-washing cylinder section, and a second grid section coaxially fixed in sequence along the material transport direction; An outer cylinder is sleeved on the outer circumference of the first grid segment and the second grid segment, and forms a discharge area between the outer cylinder and the first grid segment and the second grid segment; a driving member connected to the inner cylinder and driving the inner cylinder to rotate relative to the stand; as well as A flushing member is provided through the inner cylinder and is used for spraying water into the inner cylinder so that the mud ore passes through the first grid section and the second grid section along with the water flow to the discharge area and is discharged.

2. The laterite nickel ore drum washing machine according to claim 1, characterized in that: A rotary bearing is provided between the stand and the inner tube. The rotary bearing comprises a first part and a second part which can rotate relative to each other. The first part is fixed to the stand, and the second part is fixed to the inner tube.

3. The laterite nickel ore drum washing machine according to claim 1, characterized in that: The inner cylinder is tilted, the first grid section is higher than the second grid section, the open end of the first ore washing cylinder section is a feed port, and the open end of the second grid section is a gravel discharge port.

4. The laterite nickel ore drum washing machine according to claim 1, characterized in that: The inner diameters of the first ore-washing barrel section and the second ore-washing barrel section are larger than the inner diameters of the first grid section and the second grid section.

5. The laterite nickel ore drum washing machine according to claim 3, characterized in that: The first ore washing barrel section and the second ore washing barrel section are cylindrical, and several disturbance bars are axially arranged on the inner walls of the first ore washing barrel section and the second ore washing barrel section, and the disturbance bars protrude relative to the inner walls of the ore washing barrel section.

6. The laterite nickel ore drum washing machine according to claim 5, characterized in that: One end of the disturbance bar close to the gravel discharge outlet is inclined toward the rotation direction of the first ore washing barrel section and the second ore washing barrel section, and forms an angle with the busbar of the first ore washing barrel section and the second ore washing barrel section, and the angle is smaller than the inclination angle of the first ore washing barrel section and the second ore washing barrel section relative to the horizontal plane.

7. The laterite nickel ore drum washing machine according to claim 1, characterized in that: It comprises two outer cylinders which are respectively sleeved on the first grid section and the second grid section, and a mud discharge port is provided at the bottom of the outer cylinder.

8. The laterite nickel ore drum washing machine according to claim 1, characterized in that: The driving member includes a driver and a driving wheel. The output end of the driver is coaxially fixed with the driving wheel, and the driving wheel abuts against the inner cylinder.

9. The laterite nickel ore drum washing machine according to claim 1, characterized in that: The flushing component includes a water supply pump and a water supply pipe. The water supply pipe is sequentially arranged through the first ore washing barrel section, the first grid section, the ore washing barrel section and the second grid section. The water supply pipe is provided with a plurality of water spray holes for spraying water into the first ore washing barrel section, the first grid section, the first ore washing barrel section, the second ore washing barrel section and the second grid section. The water supply pump is connected to the water supply pipe.

10. The laterite nickel ore drum washing machine according to claim 1, characterized in that: The first grid section includes a plurality of first grid plates and a first fixed ring. The first grid plates are arranged at intervals around the material transportation direction, and the first fixed ring is fixed to the first grid plates so that all the first grid plates are arranged to form a cylindrical shape; the second grid section includes a plurality of second grid plates and a second fixed ring. The second grid plates are arranged at intervals around the material transportation direction, and the second fixed ring is fixed to the second grid plates so that all the second grid plates are arranged to form a cylindrical shape.

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