A concentrator feeding device with energy dissipation, dilution, dispersion and degassing functions

Abstract

The present invention provides a concentrator feeding device with energy dissipation, dilution, dispersion and degassing functions, comprising a concentrator tank, a feed pipe, a central spindle of the concentrator and a drive motor for driving the central spindle to rotate, and is characterized in that it comprises a feeding mixing box, and the feeding mixing box is suspended below the central operating platform of the concentrator through hangers welded at equal angles on the outer side of its upper part; a rotating sleeve is also provided above the central operating platform of the concentrator, and a dilution system, an energy dissipation, degassing system and a dispersion system are provided in the feeding mixing box. The advantages of the present invention are that the ore is stably fed from the center of the concentrator and passes through the concentrator feeding device, which greatly improves the concentrating effect of the concentrator under the same conditions, and the structure is simple and reasonable.

Description

Technical Field

[0001] The invention belongs to the technical field of ore dressing plant control, and in particular relates to a concentrator feeding device with energy dissipation, dilution, dispersion and degassing functions. Background Art

[0002] In the dehydration operation of the ore dressing plant, the concentrator is the most commonly used dehydration equipment for middlings, concentrates and tailings in the ore dressing plant due to its large processing capacity, wide underflow concentration control range and low concentration cost.

[0003] At present, the feeding method of the concentrator is to feed the ore into the concentrator through a pipeline. The flow rate of the slurry in the pipeline is generally 2-3m / s. The kinetic energy of the slurry makes the slurry in the feeding well turbid, which seriously interferes with the sedimentation of solid particles, resulting in insufficient concentration of the concentrated bottom flow and turbid overflow water.

[0004] The feed slurry of the concentrator often contains a certain amount of air. If the air is not removed in time, it is easy to form a large number of bubbles in the concentrator, which will destroy the sedimentation of solid particles.

[0005] The feed concentration of the concentrator is often around 15%-30%, while the optimal concentration for particle concentration and sedimentation is generally around 10%. This requires us to develop a feed well that can dilute the feed concentration to the optimal concentration. Moreover, since the feed concentration of the concentrator varies greatly, the dilution water volume of the concentrator feed must be adjustable. Currently, most concentrator feed wells do not have this function.

[0006] In addition, some concentrators discharge the slurry directly from the bottom or edge of the feed shaft, which will cause the slurry flow in the center of the concentrator to be too large, easily causing material accumulation in the center of the concentrator, and eventually causing the concentrator feeding device to fail.

[0007] Therefore, it is necessary for us to develop a concentrator feed well that can dissipate energy, dilute, disperse and degas the concentrator feed. Summary of the invention

[0008] The purpose of the present invention is to develop a concentrator feeder device which can dissipate energy, dilute, disperse and degas the concentrator feeder.

[0009] The present invention discloses a concentrator feeding device with energy dissipation, dilution, dispersion and degassing functions, comprising a concentrator tank, a feed pipe, a central spindle of the concentrator and a drive motor for driving the central spindle to rotate, and is characterized in that it also comprises a feeding mixing box, wherein the feeding mixing box is suspended below the central operating platform of the concentrator through hangers welded at equal angles and uniformly distributed on the outer side of the upper part thereof; a rotating sleeve is also arranged above the central operating platform of the concentrator, and the rotating sleeve is suspended on the upper surface of the operating platform through a hanging plate, and a dilution system, an energy dissipation, degassing system and a dispersion system are arranged in the feeding mixing box;

[0010] The feed mixing box is concentrically arranged outside the central main shaft of the concentrator, and includes an upper cylindrical section composed of an upper cylindrical barrel body I and a lower inverted truncated cone barrel body I, a middle cylindrical section composed of an upper cylindrical barrel body II and a lower inverted truncated cone barrel body II connected to the lower inverted truncated cone barrel body I of the upper cylindrical section, and a lower truncated cone section.

[0011] The dilution system and energy dissipation and degassing system include a plurality of water inlets arranged at equal distances and at the same height along the circumference of the upper cylindrical body I, a water inlet regulating inner cylinder arranged in the upper cylindrical body I, and a deceleration grid arranged on the side wall of the upper cylindrical body II in the middle cylindrical section.

[0012] The water inlet regulating inner cylinder is connected to the rotating sleeve through two symmetrically arranged connecting rods. The water inlet regulating inner cylinder is provided with water holes of the same shape, size and number at the same height and distance as the water inlet on the upper cylindrical cylinder body I. The feed pipe is arranged at the lower part of the water inlet.

[0013] The dispersion system is composed of a lower conical section of a feeding mixing box and a scraper. The lower conical section is a hollow body with closed upper and lower surfaces, which is connected to the outer wall of the rotating sleeve of the center column through its inner ring disk, and the upper part of the lower conical section is inserted into the lower inverted conical cylinder body II of the middle cylindrical section, and the scraper is welded to the lower part of the lower inverted conical cylinder body II of the middle cylindrical section.

[0014] Preferably, there are 30-40 water inlets, the upper edge of which is 30mm-50mm lower than the overflow water surface of the concentrator, the height of the water inlet is 100mm-200mm, and the width is 50-100mm.

[0015] Preferably, the diameter of the upper cylindrical body I is 1.2 times the diameter of the upper cylindrical body II, and the upper edge of the upper cylindrical body I is 200mm-300mm higher than the overflow water surface of the concentrator.

[0016] Preferably, one end of the feed pipe is connected to the feed pipe through a flange, and the other end is tangentially connected to the upper circular cylinder I of the upper cylindrical section.

[0017] Preferably, there are 2-4 deceleration grids, which are vertically welded at equal angles to the inner wall of the upper cylindrical body II of the middle cylindrical section.

[0018] Preferably, the upper surface diameter of the lower frustum section is 50%-60% of the outlet diameter of the middle cylindrical section, and the lower surface diameter is 120%-140% of the outlet diameter of the middle cylindrical section.

[0019] Preferably, the upper surface of the lower frustum section is 300-400 mm higher than the lower edge of the middle cylindrical section, and the lower surface is 100-400 mm lower than the lower edge of the middle cylindrical section.

[0020] Preferably, the scraper is composed of two groups of scrapers, and the two groups of scrapers are respectively parallel to the generatrix of the lower inverted truncated cone-shaped cylinder II of the middle cylindrical section and are 20-40 mm away from the generatrix.

[0021] The advantages of the present invention are:

[0022] (1) The water inlet of the concentrator feeding device of the present invention is located in the overflow clean water layer of the concentrator tank. The overflow clean water enters the feed mixing box through the evenly distributed water inlet, and then mixes with the high-concentration slurry fed through the feed pipe below it, thereby effectively reducing the concentration of the slurry fed into the feed mixing box, and optimizing the sedimentation and concentration effect from the source;

[0023] (2) The dilution system of the present invention can achieve the adjustment of any overlap between the water inlet of the water inlet regulating inner cylinder and the water inlet of the upper cylindrical cylinder I by manually pushing the scraper, thereby achieving the adjustment of the water inlet, thereby adapting to the change of the concentration of the feed slurry and diluting the concentration of the feed slurry to the optimal sedimentation concentration;

[0024] (3) The slurry of the energy dissipation and degassing system is fed into the upper part of the feed mixing box tangentially along the feed pipe, and then the slurry is spirally rotated and settled along the inner wall of the feed mixing box. This spiral motion increases the settling time of the slurry, thereby greatly extending the deceleration time of the slurry, thereby greatly reducing the kinetic energy of the slurry, optimizing the solid particle settling effect, and ensuring the concentration effect;

[0025] (4) The energy dissipation and degassing system intercepts the movement of the slurry through the deceleration grid in the feed mixing box, further reducing the speed of the slurry, reducing the kinetic energy of the slurry, further optimizing the solid particle sedimentation effect, and ensuring the concentration effect;

[0026] (5) The energy dissipation and degassing system forms a certain negative pressure at the center of the feed mixing box through the spiral motion of the slurry formed by tangential feeding, so that the air in the slurry escapes upward from the middle, thereby achieving the degassing of the feed slurry, avoiding the interference of air on the subsequent solid particle sedimentation, and optimizing the concentration effect;

[0027] (6) The dispersion system uses the guiding effect of the busbar of the lower section of the feed shaft on the material to change the movement of the material to a dispersion state along the busbar of the truncated cone toward the outer side of the circumference. This dispersed solid particle movement state allows the material to diffuse toward the periphery of the concentrator, effectively increasing the effective sedimentation area of ​​the concentrator and greatly optimizing the concentrator's concentrating effect. At the same time, it also prevents the concentrator from clogging due to the direct downward deposition of solid particles at the center of the concentrator. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a schematic diagram of the structure of the present invention.

[0029] Figure 2 It is a structural schematic diagram of another embodiment of the present invention.

[0030] Figure 3 Connection diagram for the water inlet adjustment inner cylinder. DETAILED DESCRIPTION

[0031] The specific implementation of the present invention is further described below in conjunction with the accompanying drawings.

[0032] like Figure 1 , Figure 2 and Figure 3 As shown, a concentrator feeding device with energy dissipation, dilution, dispersion and degassing functions of the present invention comprises a concentrator tank 1, a feed pipe 11, a central spindle 4 of the concentrator and a drive motor 22 for driving the central spindle 4 to rotate, characterized in that it also comprises a feeding mixing box, the feeding mixing box is suspended below the central operating platform 3 of the concentrator through the hangers 2 welded at equal angles and uniformly distributed on the outer side of the upper part thereof; a rotating sleeve 15 is also provided above the central operating platform 3 of the concentrator, and the rotating sleeve 15 is suspended on the upper surface of the operating platform through a hanging plate 16, and a dilution system, an energy dissipation, degassing system and a dispersion system are provided in the feeding mixing box;

[0033] The feeding mixing box is concentrically arranged on the outside of the central main axis 4 of the concentrator, and includes an upper cylindrical section composed of an upper cylindrical barrel Ⅰ51 and a lower inverted truncated cone barrel Ⅰ52, a middle cylindrical section composed of an upper cylindrical barrel Ⅱ61 and a lower inverted truncated cone barrel Ⅱ62 connected to the lower inverted truncated cone barrel Ⅰ52 of the upper cylindrical section, and a lower truncated cone section 7; one end of the feeding pipe 11 is connected to the feeding pipe 13 through a flange 12, and the other end is tangentially connected to the upper cylindrical barrel Ⅰ of the upper cylindrical section.

[0034] The dilution system and energy dissipation degassing system include several water inlets 91 arranged at equal distances and heights along the circumference of the upper cylindrical body Ⅰ51, a water inlet adjustment inner cylinder 10 arranged in the upper cylindrical body Ⅰ51, and a deceleration grid 17 arranged on the side wall of the upper cylindrical body Ⅱ61 of the middle cylindrical section. The deceleration grid 17 is 2-4 in number and is vertically welded at equal angles on the inner wall of the upper cylindrical body Ⅱ61 of the middle cylindrical section. The spiral motion of the slurry formed by tangential feeding forms a certain negative pressure at the center of the feeding mixing box, so that the air in the feeding slurry escapes upward from the middle, achieving the degassing of the feeding slurry, avoiding the interference of air on the subsequent solid particle sedimentation, and optimizing the concentration effect.

[0035] The water inlet regulating inner cylinder 10 of the present invention is connected to the rotating sleeve 15 through two symmetrically arranged connecting rods 14. The water inlet regulating inner cylinder 10 is provided with water holes 92 of the same shape, size and number and at the same height as the water inlet 91 on the upper cylindrical barrel Ⅰ51. The feed pipe 11 is arranged at the lower part of the water inlet 9; the water inlet 91 is 30-40, and its upper edge is 30mm-50mm lower than the overflow water surface 8 of the concentrator. The height of the water inlet 91 is 100 mm-200mm and the width is 50-100mm; the diameter of the upper cylindrical barrel Ⅰ51 is 1.2 times the diameter of the upper cylindrical barrel Ⅱ61, and the upper edge of the upper cylindrical barrel Ⅰ51 is 200 mm-300mm higher than the overflow water surface of the concentrator; the overflow water surface of the concentrator in the figure is 8. By rotating the rotating sleeve 15, the water hole 92 on the water inlet regulating inner cylinder 10 and the water inlet 9 of the upper cylindrical cylinder Ⅰ51 can be adjusted to any overlapping degree, that is, they can be opened in an overlapping manner or arranged in a separated manner to achieve the adjustment of the dilution water inlet amount, thereby adapting to the change in the concentration of the feed slurry and diluting the concentration of the feed slurry to the optimal sedimentation concentration.

[0036] The dispersion system described in the present invention is composed of the lower truncated cone section 7 of the feed mixing box and the scraper 21. The lower truncated cone section 7 is a hollow body with an upper surface 19 and a lower surface 20 closed. It is connected to the outer wall of the rotating sleeve 15 of the center column through its inner ring disk 18, and the upper part of the lower truncated cone section 7 is inserted into the lower inverted truncated cone cylinder II of the middle cylindrical section. The scraper 21 described in the present invention is composed of two groups of scrapers, which are symmetrically welded to the lower part of the lower truncated cone section 7. The two groups of scrapers 21 are parallel to the generatrix of the lower inverted truncated cone cylinder II of the middle cylindrical section, and are 20-40mm away from the generatrix. The setting of the scraper group effectively scrapes out the materials accumulated on the lower truncated cone section 7, avoiding blockage and siltation on the diversion side.

[0037] The upper surface diameter of the lower frustum section 7 described in the present invention is 50%-60% of the outlet diameter of the middle cylindrical section, and the lower surface diameter is 120%-140% of the outlet diameter of the middle cylindrical section; the upper surface of the lower frustum section 7 is 300-400mm higher than the lower edge of the middle cylindrical section, and the lower surface is 100-400mm lower than the lower edge of the middle cylindrical section.

[0038] The dispersion system of the present invention changes the movement mode of the material to a dispersion state along the truncated cone generatrix toward the outer side of the circumference through the guiding effect of the generatrix of the lower section of the feed shaft on the material. This dispersed solid particle movement state allows the material to diffuse toward the periphery of the concentrator, effectively increasing the effective settling area of ​​the concentrator and greatly optimizing the concentrating effect of the concentrator. At the same time, it also prevents the concentrator from being blocked by siltation caused by the direct downward deposition of solid particles at the center of the concentrator.

[0039] The ore material of the present invention is stably fed from the center of the concentrator and passes through the concentrator feeding device, which greatly improves the concentrating effect of the concentrator under the same conditions and has a simple and reasonable structure.

Claims

1. A concentrator feeding device with energy dissipation, dilution, dispersion and degassing functions, comprising a concentrator tank, a feed pipe, a central spindle of the concentrator and a driving motor for driving the central spindle to rotate, characterized in that: It also includes a feed mixing box, which is suspended below the central operating platform of the concentrator through hangers welded on the outer side of its upper part and evenly distributed at equal angles; a rotating sleeve is also provided above the central operating platform of the concentrator, and the rotating sleeve is suspended on the upper surface of the operating platform through a hanging plate, and a dilution system, an energy dissipation and degassing system and a dispersion system are provided in the feed mixing box; The feed mixing box is concentrically arranged outside the central main shaft of the concentrator, and includes an upper cylindrical section composed of an upper cylindrical barrel body I and a lower inverted truncated cone barrel body I, a middle cylindrical section composed of an upper cylindrical barrel body II and a lower inverted truncated cone barrel body II connected to the lower inverted truncated cone barrel body I of the upper cylindrical section, and a lower truncated cone section. The dilution system and energy dissipation and degassing system include a plurality of water inlets arranged at equal distances and at the same height along the circumference of the upper cylindrical body I, a water inlet regulating inner cylinder arranged in the upper cylindrical body I, and a deceleration grid arranged on the side wall of the upper cylindrical body II in the middle cylindrical section. The water inlet regulating inner cylinder is connected to the rotating sleeve through two symmetrically arranged connecting rods. The water inlet regulating inner cylinder is provided with water holes of the same shape, size and number at the same height and distance as the water inlet on the upper cylindrical cylinder body I. The feed pipe is arranged at the lower part of the water inlet. The dispersion system is composed of a lower conical section of a feeding mixing box and a scraper. The lower conical section is a hollow body with closed upper and lower surfaces, which is connected to the outer wall of the rotating sleeve of the center column through its inner ring disk, and the upper part of the lower conical section is inserted into the lower inverted conical cylinder body II of the middle cylindrical section, and the scraper is welded to the lower part of the lower inverted conical cylinder body II of the middle cylindrical section.

2. The concentrator feeding device with energy dissipation, dilution, dispersion and degassing function according to claim 1 is characterized in that: There are 30-40 water inlets, the upper edge of which is 30mm-50mm lower than the overflow water surface of the concentrator, the height of the water inlet is 100mm-200mm, and the width is 50-100mm.

3. The concentrator feeding device with energy dissipation, dilution, dispersion and degassing function according to claim 1 is characterized in that: The diameter of the upper cylindrical barrel body I is 1.2 times the diameter of the upper cylindrical barrel body II, and the upper edge of the upper cylindrical barrel body I is 200mm-300mm higher than the overflow water surface of the concentrator.

4. The concentrator feeding device with energy dissipation, dilution, dispersion and degassing function according to claim 1 is characterized in that: One end of the feed pipe is connected to the feed pipe through a flange, and the other end is tangentially connected to the upper circular cylinder I of the upper cylindrical section.

5. The concentrator feeding device with energy dissipation, dilution, dispersion and degassing function according to claim 1 is characterized in that: There are 2 to 4 deceleration grids, which are vertically welded at equal angles on the inner wall of the upper cylindrical body II of the middle cylindrical section.

6. The concentrator feeding device with energy dissipation, dilution, dispersion and degassing function according to claim 1, characterized in that: The upper surface diameter of the lower frustum section is 50%-60% of the outlet diameter of the middle cylindrical section, and the lower surface diameter is 120%-140% of the outlet diameter of the middle cylindrical section.

7. The concentrator feeding device with energy dissipation, dilution, dispersion and degassing function according to claim 6, characterized in that: The upper surface of the lower frustum section is 300-400 mm higher than the lower edge of the middle cylindrical section, and the lower surface is 100-400 mm lower than the lower edge of the middle cylindrical section.

8. The concentrator feeding device with energy dissipation, dilution, dispersion and degassing function according to claim 6, characterized in that: The scraper is composed of two groups of scrapers, and the two groups of scrapers are respectively parallel to the generatrix of the lower inverted truncated cone-shaped cylinder II of the middle cylindrical section and are 20-40 mm away from the generatrix.

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