An integrated device for feeding and liner removal

Abstract

The present invention discloses an integrated device for feeding and liner removal, comprising an ore bin discharge chute and a liner removal mechanism, wherein the top of the ore bin discharge chute is connected to the discharge hopper of the ore bin, and the bottom is connected to the liner removal mechanism; the bottom of the ore bin discharge chute is an open structure. The liner removal mechanism comprises a vibration box, a liner removal rod, a vibration device and a discharge device, wherein the liner removal rod is located in the vibration box, the vibration device is located at the end of the vibration box, and the discharge device is located at the bottom of the vibration box. The present invention realizes the liner removal and crusher feeding under magnetic and vibration force fields, and completes two operations with one device, thereby eliminating the need to set up an additional independent iron removal device for liner removal. The structure is simple, the footprint is small, the number of equipment is small, and the investment in equipment and plant buildings is reduced.

Description

Technical Field

[0001] The invention belongs to the technical field of iron removal in ore dressing plants, and in particular relates to an integrated device for removing feed and liner. Background Art

[0002] Currently, most non-magnetic ores have a relatively fine particle size distribution and ultimately require grinding and separation to produce high-quality concentrates. However, the maximum particle size of ore mined from a stope is typically 600-1200mm, while the feed size for grinding is generally less than 12mm, necessitating a crushing process prior to grinding.

[0003] Most mined ores undergo three or four consecutive stages of crushing before entering the grinding mill to achieve the required particle size. Secondary, fine, and ultra-fine crushing, in addition to coarse crushing, are limited by the feed size, and the corresponding crushing chamber widths are also limited. This crushing chamber can easily become jammed by iron particles larger than the feed ore, causing damage to the crusher. Therefore, the feed material must be de-ironed before entering the secondary, fine, and ultra-fine crushing stages to protect the crusher; this necessitates de-ironing of the feed material in each subsequent crushing stage.

[0004] Existing ore processing plants typically have a feed bin before each crushing stage. Its inner wall is lined with wear-resistant liners, most of which are made of iron. However, due to the long-term impact and wear of the ore on the liner during use, the feed bin often suffers from broken liner fragments falling into the ore and being discharged along with the ore. These broken liner fragments are the main component of iron contamination, and if they enter the crusher, they can cause serious damage.

[0005] At present, the iron removal operation of non-magnetic ores is to hang an independent disc iron remover or belt iron remover above the feed belt of the crusher. This independent iron removal method requires large equipment specifications, occupies a lot of space, and requires high equipment purchase and plant investment. Summary of the Invention

[0006] The purpose of the present invention is to provide a suspended vibration ore bin liner removal device which can complete the removal of feed and liner with one device and does not require the installation of independent iron removal equipment, thereby reducing equipment and plant investment.

[0007] To achieve the above-mentioned purpose, the technical solution of the present application is: an integrated device for feeding and liner removal, including a ore bin discharge chute and a liner removal mechanism, the top of the ore bin discharge chute is connected to the discharge hopper of the ore bin, and the bottom is connected to the liner removal mechanism.

[0008] Furthermore, the bottom of the ore bin discharge chute is an open structure.

[0009] Furthermore, the liner removal mechanism includes a vibration box, a liner removal rod, a vibration device and a discharge device, the liner removal rod is located in the vibration box, the vibration device is located at the end of the vibration box, and the discharge device is located at the bottom of the vibration box.

[0010] Furthermore, an opening is provided on the top of the vibration box, and the bottom of the ore bin discharge chute extends into the vibration box through the opening, and the distance from the inner wall of the vibration box is 10-20 mm.

[0011] Furthermore, the vibration box is 1.5-2 meters long and is tilted at an angle of 5-10°; the left side of the bottom of the vibration box is a closed structure, and the right side is an open structure.

[0012] Furthermore, the liner removal rods are set from the feeding end of the vibrating box to 0.5-1 meters away from the end of the box body. This section is the iron impurity adsorption area, and the tail end of the iron impurity adsorption area to the end of the box body is the iron unloading area; the gap between adjacent liner removal rods is 1.5-2 times the maximum ore particle size, and both ends of each liner removal rod are connected to the support beam inside the box body by bolts.

[0013] Furthermore, the liner removal rod is made of electromagnetic material and lined with 10-20 mm thick wear-resistant rubber. The magnetic field strength can be adjusted within a range of 5-20 mT, and the width of the liner removal rod is 50-100 mm.

[0014] Furthermore, the vibration device includes a vibration motor arranged outside the vibration box and suspension rods around it. The top of the suspension rod is rotatably connected to the suspension ring at the bottom of the ore bin, and the lower end of the suspension rod is rotatably connected to the circular ring on the upper edge of the vibration box body. A spring assembly is provided on the suspension rod; the vibration mode of the vibration motor is reciprocating motion from the feeding end to the discharging end of the vibration box body.

[0015] Furthermore, the discharge device includes an ore discharge hopper and an iron ore collecting trough; an ore discharge hopper is provided below the iron ore adsorption area within 0.3-0.5 meters from the tail end, and an iron ore collecting trough is provided below the iron unloading area.

[0016] As a further improvement, the vibration motor is a variable frequency motor, and the variable frequency motor and each lining stripping rod are connected to a control box.

[0017] By adopting the above technical solution, the present invention can achieve the following technical effects:

[0018] 1) In the integrated device for feeding and liner removal of the present invention, the non-magnetic ore to be crushed enters the ore bin discharge chute from the discharge hopper of the ore bin, is fed into the upper part of the liner removal rod from the feeding end of the vibrating box body, and then enters the iron impurity adsorption zone. In the iron impurity adsorption zone, the iron impurities are adsorbed by the magnetic force of the electromagnetic rod. Since the field strength of the electromagnetic rod is 5-20mT and the magnetic force is relatively small, the adsorbed liner is separated from the surface of the electromagnetic rod and is thrown forward under the vibration force provided by the vibrating box body. After each throw and fall, it is adsorbed by the subsequent rod. In this way, the incomplete liner performs a reciprocating motion of adsorption-ejection-adsorption between different rods from front to back until it finally leaves the adsorption zone and is discharged to the iron unloading zone and fed into the iron impurity collecting trough. The non-magnetic ore is discharged to the bottom of the vibrating box body through the gaps between the rods in turn. Under the action of the vibration force, it moves forward along the inclined bottom of the vibrating box body, and is finally discharged into the ore discharge hopper and fed into the subsequent crusher. This structure achieves both liner removal and crusher feeding under magnetic and vibratory forces, completing two operations with a single device. This eliminates the need for a separate, independent iron removal device for liner removal. The device boasts a simple structure, a compact footprint, and minimal equipment, reducing both equipment and plant investment. The device's adsorption zone occupies the majority of the vibrating housing's length, ensuring sufficient time and frequency for sufficient non-magnetic ore to fall through the bar gaps and into the ore hopper. Combined with a bar gap size of 1.5-2 times the maximum ore size, the device ensures that all ore passes through and is discharged into the ore hopper, minimizing ore loss.

[0019] 2) The electromagnetic bars of this invention attract the liner, and the vibration force, which is greater than the adsorption force, causes the attracted liner to move continuously from front to back until it is discharged into the iron hopper. This method completely removes iron from liners of different sizes, which helps protect subsequent crushing equipment.

[0020] 3) The electromagnetic rods of the present invention can adjust the field strength between 5 and 20 mT by controlling the current supplied, thereby controlling and adjusting the magnetic attraction of the damaged liner. The drive motor can also be frequency-controlled, thus controlling and adjusting the vibration intensity. Therefore, both the magnetic and vibration forces of the adsorption field can be adjusted, ensuring a suitable combined force field, achieving a good impurity removal effect, and preventing ore loss.

[0021] 4) The surface of the electromagnetic rod of the present invention is lined with rubber with a thickness of 10-20 mm, which effectively avoids direct wear of the electromagnetic material by the ore and prolongs the service life of the electromagnetic rod.

[0022] 5) The current intensity of the variable frequency motor and the electromagnetic rods of the present invention are all adjusted through the control box, and the degree of automation is high. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a schematic diagram of the structure of an integrated device for feeding and liner removal;

[0024] Explanation of the serial numbers in the figure: 1. Ore bin discharge chute; 2. Ore bin; 3. Discharge hopper; 4. Vibrating box; 5. Liner removal rod; 6. Closed structure; 7. Open structure; 8. Bolts; 9. Box body; 10. Electromagnetic material; 11. Wear-resistant rubber; 12. Vibrating motor; 13. Hanging rod; 14. Lifting ring; 15. Spring assembly; 16. Ore discharge hopper; 17. Iron and steel collecting trough. DETAILED DESCRIPTION

[0025] The embodiments of the present invention are implemented on the premise of the technical solution of the present invention, and detailed implementation methods and specific operation processes are given, but the protection scope of the present invention is not limited to the following embodiments.

[0026] Example 1

[0027] like Figure 1 As shown, this embodiment provides an integrated device for feeding and liner removal, including a ore bin discharge chute 1 and a liner removal mechanism; the ore bin discharge chute is connected to the discharge hopper 3 of the ore bin 2 through a flange, and the lower part of the ore bin discharge chute is open and closed on all sides.

[0028] The liner removal mechanism includes a vibrating box 4, a liner removal rod 5, a vibrating device and a discharge device; the top plate of the vibrating box 4 is provided with an opening, the left side of the bottom plate is a closed structure 6, the right side is an open structure 7, and the front and rear ends are closed. The lower mouth of the ore bin discharge chute is deep into the vibrating box, and the distance from the inner wall of the vibrating box is 10-20mm; the length of the vibrating box body is 1.5-2 meters, and it is tilted with an inclination angle of 5-10°. The liner removal rods are set from the feeding end of the vibrating box to 0.5-1 meters from the end of the box body. This section is the iron impurity adsorption area, and the tail end of the iron impurity adsorption area to the end of the box body is the iron unloading area; the gap between adjacent liner removal rods is 1.5-2 times the maximum ore particle size, and each liner removal rod is connected to the support beam inside the box body 9 at both ends by bolts 8. The rods are made of electromagnetic material 10 and lined with 10-20mm thick wear-resistant rubber 11. Their magnetic field strength is adjustable within a range of 5-20mT. The rods are 50-100mm wide. The vibration device comprises a vibration motor 12 mounted outside the vibration box and surrounding booms 13. The top of the booms is rotatably connected to a ring 14 at the bottom of the ore bin, and the bottom of the booms is rotatably connected to a ring on the upper edge of the vibration box. A spring assembly 15 is mounted on the booms. The vibration motor vibrates in a reciprocating motion from the feed end to the discharge end of the vibration box. The discharge device includes an ore hopper 16 and an iron ore collection trough 17. The ore hopper is located within 0.3-0.5 meters from the tail end of the iron ore adsorption zone, and the iron ore collection trough is located below the iron ore unloading zone. The vibration motor is a variable frequency motor, and the current intensity of all the rods is adjustable. The vibration motor's start / stop and frequency conversion signals, as well as the current intensity signals of all the rods, are controlled by a control box.

[0029] The foregoing descriptions of specific exemplary embodiments of the present invention are for purposes of illustration and description. These descriptions are not intended to limit the invention to the precise forms disclosed, and it is apparent that many variations and modifications are possible in light of the foregoing teachings. The exemplary embodiments have been selected and described for the purpose of explaining the specific principles of the invention and their practical application, thereby enabling those skilled in the art to realize and utilize a variety of exemplary embodiments of the invention and various options and modifications. The scope of the invention is intended to be defined by the claims and their equivalents.

Claims

1. An integrated device for feeding and liner removal, characterized in that: It includes an ore bin discharge chute and a liner removal mechanism. The top of the ore bin discharge chute is connected to the discharge hopper of the ore bin, and the bottom is connected to the liner removal mechanism. The liner removal mechanism includes a vibration box, a liner removal rod, a vibration device and a discharge device, wherein the liner removal rod is located in the vibration box, the vibration device is located at the end of the vibration box, and the discharge device is located at the bottom of the vibration box; The liner removal rods are set from the feeding end of the vibrating box to 0.5-1 meters from the end of the vibrating box. This section is the iron impurity adsorption area. The tail end of the iron impurity adsorption area to the end of the box is the iron unloading area. The gap between adjacent liner removal rods is 1.5-2 times the maximum ore particle size. The two ends of each liner removal rod are connected to the support beam inside the vibrating box by bolts. The liner removal rod is made of electromagnetic material and lined with 10-20mm wear-resistant rubber. The magnetic field strength can be adjusted within the range of 5-20mT. The width of the liner removal rod is 50-100mm. The non-magnetic ore to be crushed enters the ore bin discharge chute from the discharge hopper of the ore bin, is fed into the liner from the feeding end of the vibrating box to remove the upper part of the rod, and then enters the iron impurity adsorption area. In the iron impurity adsorption area, the iron impurities are adsorbed by the magnetic force of the electromagnetic rods; the adsorbed liner is separated from the surface of the electromagnetic rod under the action of the vibration force provided by the vibrating box to realize forward throwing movement, and is adsorbed by the subsequent rods after each throwing and falling. In this way, the incomplete liner performs a reciprocating motion of adsorption-throwing-adsorption between different rods from back to front until it finally breaks away from the adsorption area and is discharged to the iron unloading area and fed into the iron impurity collecting trough; the non-magnetic ore is discharged to the bottom of the vibrating box through the gaps between the rods in turn, and moves forward along the inclined bottom of the vibrating box under the action of the vibration force, and is finally discharged into the ore discharge hopper and fed into the subsequent crusher.

2. The integrated device for feeding and liner removal according to claim 1, characterized in that: The bottom of the ore bin discharge chute is an open structure.

3. The integrated device for feeding and removing liner according to claim 1, characterized in that: The top of the vibration box is provided with an opening, and the bottom of the ore bin discharge chute extends into the vibration box through the opening, and the distance from the inner wall of the vibration box is 10-20 mm.

4. The integrated device for feeding and removing liner according to claim 2 or 3, characterized in that: The vibration box is 1.5-2 meters long and is tilted at an angle of 5-10 degrees. The left side of the bottom of the vibration box is a closed structure, and the right side is an open structure.

5. The integrated device for feeding and removing liner according to claim 1, characterized in that: The vibration device includes a vibration motor arranged outside the vibration box and suspension rods around it. The top of the suspension rod is rotatably connected to the suspension ring at the bottom of the ore bin, and the lower end of the suspension rod is rotatably connected to the circular ring on the upper edge of the vibration box. A spring assembly is provided on the suspension rod. The vibration mode of the vibration motor is reciprocating motion from the feeding end to the discharging end of the vibration box.

6. The integrated device for feeding and liner removal according to claim 1, characterized in that: The discharging device includes an ore discharging hopper and an iron and debris collecting trough; an ore discharging hopper is provided below the iron and debris adsorption area within a range of 0.3-0.5 meters from the tail end, and an iron and debris collecting trough is provided below the iron unloading area.

7. The integrated device for feeding and removing liner according to claim 5, characterized in that: The vibration motor is a variable frequency motor, and the variable frequency motor and each lining plate removing rod are all connected to the control box.

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