A multi-plate iron remover

Abstract

A multi-slat iron remover belongs to the technical field of iron removal in mineral processing plants. Technical solution: It includes a vibration unit for feeding and an iron removal unit for removing iron; Vibration unit: Two eccentric excitation blocks are arranged on the rotating shaft at the top of the vibration box in a mirror-symmetrical manner, and the vibration box is arranged tilted from the feeding end to the discharging end, and the feeding end is higher than the discharging end; The transmission motor is arranged on the outside of the vibration box and connected to the rotating shaft through a coupling; Iron removal unit: A number of strips with electromagnetic adsorption function are arranged at intervals along the long side of the vibration box, and the strips are located in the iron adsorption area close to the feeding end, and the iron unloading area is close to the discharging end; An ore discharge hopper is provided below the iron adsorption area, and an iron collecting trough is provided below the iron unloading area; The base platform of the vibration unit is connected to the vibration box through a spring device. Beneficial effect: The present invention completes feeding and iron removal with one device, and there is no need to set up independent iron removal equipment, thereby reducing equipment and plant investment.

Description

Technical Field

[0001] The invention belongs to the technical field of iron removal in a mineral processing plant, and in particular relates to a multi-strip plate iron remover. Background Art

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

[0003] Typically, mined ore undergoes three or four consecutive stages of crushing before entering the grinding mill to achieve the desired grinding particle size. Secondary, fine, and ultra-fine crushing, in addition to coarse crushing, are limited by their relatively small feed sizes and narrow crushing chamber widths. This makes the crushing chamber susceptible to being jammed by iron particles larger than the feed ore, potentially damaging the crusher. Therefore, the feed to each of these stages must undergo iron removal to protect the crusher. This necessitates iron removal for each subsequent stage of crushing.

[0004] The current iron removal operation for non-magnetic ores generally involves hanging an independent disc remover or belt remover above the crusher's feed belt. This method of using independent iron removal equipment has large equipment specifications, occupies a large space, and requires high equipment purchase and workshop investment.

[0005] Therefore, there is an urgent need for a device that can directly complete the iron removal operation on the crushing feeding device, so that feeding and iron removal can be completed at the same time. This does not require the installation of independent iron removal equipment, thereby reducing equipment and plant investment. Summary of the Invention

[0006] In order to solve the above problems in the prior art and meet the needs of the prior art, the present invention completes feeding and iron removal with one device, eliminating the need for independent iron removal equipment, thereby reducing equipment and plant investment.

[0007] The technical solution is as follows:

[0008] A multi-strip plate iron remover, comprising:

[0009] a vibration unit for feeding and an iron removal unit for removing iron;

[0010] The vibration unit includes:

[0011] A vibration box, with two eccentric excitation blocks mirror-symmetrically arranged on the top rotating shaft, the vibration box is tilted from the feeding end to the discharging end, with the feeding end being higher than the discharging end;

[0012] a transmission motor, which is arranged outside the vibration box and connected to the rotating shaft through a coupling;

[0013] The iron removal unit comprises:

[0014] Several strips with electromagnetic adsorption function are arranged at intervals along the long side of the vibration box. The strips are located in the iron adsorption area near the feeding end and the iron unloading area near the discharge end;

[0015] An ore discharge hopper is provided below the iron impurity adsorption area, and an iron impurity receiving trough is provided below the iron unloading area;

[0016] Also includes:

[0017] A vibration unit base platform connected to the vibration box via a spring device;

[0018] Furthermore, the spring device includes:

[0019] The spring is connected to the vibration unit base platform through a lower base.

[0020] Furthermore, two support beams are welded symmetrically to the inner sides of the two side panels in the longitudinal direction of the vibration box at the same inclination angle as the box, and both ends of each strip are connected to the support beams.

[0021] Furthermore, the ore discharge hopper and the iron and debris collecting trough are both connected to the vibration unit base platform through their respective base plates.

[0022] Furthermore, the inclination angle from the feeding end to the discharging end of the vibration box is 5-10 degrees.

[0023] Furthermore, the lower base is connected to the vibration unit base platform via bolts.

[0024] Furthermore, the upper surface of the strip is made of electromagnetic material, and the surface of the strip is lined with 10-20 mm wear-resistant rubber.

[0025] Furthermore, the width of the strips is 100-300 mm, and the gap between the strips is 1.1-1.2 times the maximum ore particle size.

[0026] Furthermore, the transmission motor is a variable frequency motor.

[0027] Furthermore, a control box is connected to the strip board.

[0028] The beneficial effects of the present invention are:

[0029] The multi-strip plate iron remover of the present invention has the following advantages:

[0030] 1) In the multi-slat iron remover of the present invention, the non-magnetic ore to be crushed is fed into the upper part of the slats from the feeding end of the box and then enters the iron impurity adsorption zone. In the iron impurity adsorption section, the iron impurities are adsorbed by the magnetic force of the electromagnetic slats. Since the field strength of the electromagnetic slats is 5-20mT and the magnetic force is relatively small, the adsorbed iron impurities are separated from the magnetic slats and thrown forward under the action of the vibration force provided by the vibrating box. After each throwing and falling, they are adsorbed by the subsequent slats again, thus achieving the reciprocating motion of adsorption-ejection-adsorption between different slats from front to back, until they finally break away from the adsorption zone and are discharged to the iron unloading zone and fed into the iron impurity collecting trough. The non-magnetic ore is then discharged into the ore discharge chute through the gaps between the slats in turn and fed into the crusher below. The above structure realizes the removal of iron impurities and the feeding of the crusher under the magnetic and vibration force fields, and completes two operations with one device. There is no need to set up independent iron removal equipment, thereby reducing equipment and plant investment.

[0031] 2) The adsorption zone of the device of the present invention occupies the vast majority of the length of the vibrating box. The long adsorption zone ensures that a sufficient amount of non-magnetic minerals can be discharged from the gaps between the strips into the ore chute over a certain period of time. Combined with the gaps between the strips being 1.1-1.2 times the maximum ore size, the ore can pass through completely, thereby ensuring that all the ore is discharged into the ore discharge chute, thus avoiding ore loss.

[0032] 3) The electromagnetic strips of the device of this invention adsorb iron debris. The vibration force, which is greater than the adsorption force, causes the adsorbed iron debris to continuously move from front to back until it is discharged into the iron debris discharge chute. This method achieves thorough iron removal of iron debris of varying sizes, effectively protecting subsequent crushing equipment.

[0033] 4) The electromagnetic strips 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 iron impurities. The drive motor of the vibration unit can be frequency-controlled to control and adjust the vibration intensity. This allows for the regulation and control of both the magnetic and vibration forces of the adsorption field, ensuring the acquisition of a suitable combined force field, guaranteeing effective impurity removal, and avoiding ore loss.

[0034] 5) The electromagnetic surface of the strip 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 strip.

[0035] 6) The transmission motor of the vibration unit of the device of the present invention is a variable frequency motor, and the current intensity of the electromagnetic strips is connected to the control box, so the degree of automation is high. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the present invention will be described in detail below with reference to the accompanying drawings and detailed embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be derived from these drawings without inventive effort. Among them:

[0037] Figure 1 This is a schematic structural diagram of the multi-plate iron remover of the present invention;

[0038] Figure 2 for Figure 1 AA cross-sectional view;

[0039] Figure 3 for Figure 2 A partial enlarged view of the middle circle A;

[0040] Reference numerals in the figure: 1-vibration box, 2-eccentric excitation block, 3-transmission motor, 4-spring, 5-lower base, 6-vibration unit base platform, 7-support beam, 8-slat, 9-ore discharge hopper, 10-iron and debris collecting trough, 11-base plate. DETAILED DESCRIPTION

[0041] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention will be 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 the present invention and are not intended to limit the present invention.

[0042] The following is combined with Figure 1-3 A multi-slat iron remover is further described.

[0043] The multi-strip iron remover of the present invention is realized by the following technical solutions:

[0044] A multi-slat iron remover includes a vibration unit and an iron removal unit.

[0045] The vibration unit consists of a vibration box 1, two eccentric excitation blocks 2 mirror-symmetrically arranged on the rotating shaft at the top of the vibration box 1, and an external transmission motor 3 connected to the outer side of the vibration box 1 and the rotating shaft by a coupling.

[0046] The vibrating unit's feeding vibration box 1 is tilted from the feeding end to the discharge end, with an inclination angle of 5-10 degrees. Two springs 4 are installed on the outer sides of the two side panels along the length of the vibration box 1. The lower base 5 of the spring 4 is bolted to the vibration unit's base platform 6. Two support beams 7 are welded to the inner sides of the two side panels along the length of the feeding box, symmetrically at the box's inclination angle.

[0047] The iron removal unit is composed of strips 8 arranged at intervals along the length direction of the vibration box 1 , and both ends of each strip 8 are bolted to the support beams 7 on both sides of the vibration box 1 .

[0048] The strips 8 extend from the feed end of the vibrating box 1 to a point 0.5-1 meter from the end of the box. This section is the iron impurity absorption zone. The area outside the iron impurity absorption zone to the end of the box is the iron unloading zone. Below the iron impurity absorption zone is an ore discharge hopper 9, and below the iron unloading zone is an iron impurity collection trough 10. Both the ore discharge hopper 9 and the iron impurity collection trough 10 are bolted to the vibration unit base platform 6 via their base plates 11.

[0049] The adsorption zone accounts for the vast majority of the length of the vibration box 1. The adsorption zone is relatively long, thereby ensuring the time and number of times for sufficient non-magnetic minerals to be unloaded from the gaps between the strips to the ore chute. Combined with the gaps between the strips being 1.1-1.2 times the maximum ore size, it is ensured that all the ore passes through, thereby ensuring that all the ore is unloaded into the ore discharge chute, avoiding ore loss.

[0050] The upper surface of the strips 8 is made of electromagnetic material and lined with 10-20mm wear-resistant rubber. The magnetic field strength is adjustable within the range of 5-20mT. The width of the strips 8 is 100-300mm, and the gap between the strips 8 is 1.1-1.2 times the maximum ore particle size.

[0051] The vibration unit's transmission motor 3 is a variable-frequency motor, and the current intensity of all slats 8 is adjustable. The start / stop and frequency conversion signals of the transmission motor 3, as well as the current intensity signals of all slats 8, are connected to a control box. By controlling the current supplied to the electromagnetic slats, the field strength can be adjusted between 5 and 20 mT, thereby controlling and adjusting the magnetic attraction of iron debris. The vibration unit's transmission motor can also be frequency-controlled, enabling control and adjustment of the vibration intensity. This allows for the regulation and control of both the magnetic force and the vibration force of the attraction field.

[0052] The non-magnetic ore to be crushed is fed from the feed end of the vibrating box 1 onto the upper portion of the strips 8 and then into the iron impurity adsorption zone. In the iron impurity adsorption section, the iron impurities are adsorbed by the magnetic force of the electromagnetic strips 8. Because the field strength of the electromagnetic strips 8 is 5-20 mT and the magnetic force is relatively weak, the adsorbed iron impurities are ejected from the magnetic strips 8 by the vibration force provided by the vibrating box 1. Each time they are ejected and dropped, they are adsorbed by the subsequent strips 8. This creates a reciprocating motion of adsorption-ejection-adsorption between the different strips 8 from front to back, until they finally leave the adsorption zone and are discharged into the iron unloading zone and fed into the iron impurity collection trough 10. The non-magnetic ore is then discharged through the gaps between the strips 8 into the ore discharge hopper 9 and fed into the crusher below.

[0053] The electromagnetic strips 8 adsorb the iron, and the vibration force greater than the adsorption force causes the adsorbed iron to move continuously from front to back until it is discharged into the iron discharge chute 10. This method achieves complete iron removal of iron of different sizes, which is beneficial to protect the subsequent crushing equipment.

[0054] The above description is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with the technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solution and inventive concept of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. A multi-strip plate iron remover, characterized in that: include: a vibration unit for feeding and an iron removal unit for removing iron; The vibration unit comprises: A vibration box (1) has two eccentric excitation blocks (2) arranged in mirror symmetry on its top rotation axis, and the vibration box (1) is arranged obliquely from the feeding end to the discharging end, with the feeding end being higher than the discharging end; A transmission motor (3), which is arranged outside the vibration box (1) and connected to the rotating shaft through a coupling; The iron removal unit comprises: A plurality of strips (8) with electromagnetic adsorption function are arranged at intervals along the long side of the vibration box (1), wherein the strips (8) are located in the iron impurity adsorption area close to the feeding end and the iron unloading area close to the discharging end; An ore discharge hopper (9) is provided below the iron impurity adsorption area, and an iron impurity receiving trough (10) is provided below the iron unloading area; Also includes: A vibration unit base platform (6) connected to the vibration box (1) via a spring device; The spring device comprises: A spring (4) connected to the vibration unit base platform (6) via a lower base (5); Two support beams (7) are welded symmetrically to the inner sides of the two side plates in the longitudinal direction of the vibration box (1) at an inclination angle with the box, and both ends of each strip plate (8) are connected to the support beam (7); The ore discharge hopper (9) and the iron and impurity collecting trough (10) are both connected to the vibration unit base platform (6) via respective base plates (11).

2. The multi-strip plate iron remover according to claim 1, characterized in that: The inclination angle from the feeding end to the discharging end of the vibration box (1) is 5-10 degrees.

3. The multi-strip plate iron remover according to claim 1, characterized in that: The lower base (5) is connected to the vibration unit base platform (6) via bolts.

4. The multi-strip iron remover according to claim 1, characterized in that: The upper surface of the strip (8) is made of electromagnetic material, and the surface of the strip (8) is lined with 10-20 mm wear-resistant rubber.

5. The multi-strip plate iron remover according to claim 4, characterized in that: The width of the strips (8) is 100-300 mm, and the gap between the strips (8) is 1.1-1.2 times the maximum ore particle size.

6. The multi-strip plate iron remover according to claim 1, characterized in that: The transmission motor (3) is a variable frequency motor.

7. The multi-strip iron remover according to claim 1, characterized in that: It also includes a control box connected to the strip board (8).

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