A clamp-type iron removal device

Abstract

The present invention relates to the technical field of mineral processing equipment, and in particular to a clamp-type iron removal device. It comprises a crusher, a discharge box, an iron removal plate assembly and a discharge trough; the discharge box is fixedly connected to the bottom of the crusher discharge port, and the iron removal plate assembly is plugged into the discharge box; the iron removal plate assembly includes an iron removal plate, the inner core of the iron removal plate is an electromagnetic plate, and the iron removal plate assembly is located on both sides of the crusher discharge port in the width direction, mirror-symmetrical with the width center line of the discharge box as the symmetry center, and is arranged along the length direction of the discharge box; the discharge trough is fixedly connected to the bottom of the discharge box. The present invention does not require the independent installation of iron removal equipment, and can remove iron at the coarse crushing discharge location, reducing equipment costs and workshop investment.

Description

Technical Field

[0001] The present invention relates to the technical field of mineral processing equipment, in particular to a clamp-type iron removal device. Background Art

[0002] Currently, most non-magnetic ores have a relatively fine particle size distribution, ultimately requiring grinding and separation to produce high-quality concentrates. The maximum particle size of ore mined from a stope ranges from 600 to 1200 mm, while the feed size for grinding is less than 12 mm. Therefore, crushing is necessary before grinding.

[0003] Before entering the grinding mill, the mined ore undergoes three to four consecutive stages of crushing to achieve the required grinding particle size. The crusher used for coarse crushing has a large feeder discharge size and a spacious crushing chamber, which prevents any iron contaminants from entering the mining area from damaging the crusher. The cone crusher and high-pressure roller mill used for secondary and fine crushing have smaller crushing chambers. Contaminants can cause ore jamming, overloading the crusher, and damaging the crushing chamber. Therefore, the crusher used for secondary and fine crushing requires iron removal before the material enters the crusher.

[0004] At present, the iron removal operation generally involves hanging an independent disc iron remover or belt iron remover above the feed belt of the crusher after coarse crushing. 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] Furthermore, the primary coarse crushing equipment consists of jaw crushers, single-tooth roller crushers, and double-tooth roller crushers, all of which feature a vertical strip-type discharge with a discharge length of 1,000 to 2,500 mm and a discharge width of 300 to 500 mm. The magnetic field gradient of the iron removal equipment is large, with the magnetic field intensity decreasing by half at a distance of approximately 50 mm. This makes it difficult to remove iron from the coarse crushing discharge using magnetic force. Summary of the Invention

[0006] In order to overcome the shortcomings of the prior art, the present invention provides a clamp-type iron removal device, which does not require independent iron removal equipment and can remove iron at the coarse crushing discharge point, reducing equipment costs and workshop investment.

[0007] To achieve the above objectives, the present invention adopts the following technical solutions:

[0008] A clamp-type iron removal device includes a crusher, a discharge box, an iron removal plate assembly and a discharge trough; the discharge box is fixedly connected to the bottom of the crusher discharge port, and the iron removal plate assembly is inserted into the discharge box; the iron removal plate assembly includes an iron removal plate, the inner core of the iron removal plate is an electromagnetic plate, the iron removal plate assembly is located on both sides of the crusher discharge port in the width direction, is mirror-symmetrical with the width center line of the discharge box as the center of symmetry, and is arranged along the length direction of the discharge box; the discharge trough is fixedly connected to the bottom of the discharge box.

[0009] Furthermore, the crusher is a jaw crusher, a double-toothed roller crusher or a single-toothed roller crusher.

[0010] Furthermore, the discharge box is a rectangular box, and the front and rear side panels of the discharge box are provided with iron removal plate perforations, and the two iron removal plate perforations are symmetrically arranged on both sides of the crusher discharge port.

[0011] Furthermore, it also includes a pressure gauge, a support beam is provided below the perforation of the iron removal plate of the discharge box, the pressure gauge is fixedly connected to the support beam, and the iron removal plate assembly is fixedly connected to the pressure gauge.

[0012] Furthermore, the pressure gauge is interlocked with the electromagnetic plate for control. The pressure gauge is provided with an alarm value. When the pressure measured by the pressure gauge is higher than the alarm value, the electromagnetic plate is powered off to complete the iron removal. After 10 to 20 seconds, the electromagnetic plate is powered on to continue iron removal.

[0013] Furthermore, the iron removal plate assembly, the pressure gauge and the support beam are connected from top to bottom by bolt penetration without providing tightening screws.

[0014] Furthermore, the iron removal plate assembly includes an iron removal plate, an end sleeve and a base; the end sleeve is sleeved on both ends of the iron removal plate, and the base is fixed to the bottom of the end sleeve.

[0015] Furthermore, the iron removal plate is long and strip-shaped, and a rubber lining layer is provided on the outer edges of the four sides of the inner core of the iron removal plate, and the magnetic field strength is 100 to 200 mT.

[0016] Furthermore, circular through holes are provided on both sides of the iron removal plate.

[0017] Furthermore, a partition plate is provided on each inner side of the two iron removal plates in the discharge box, the ore discharge trough is fixedly connected to the bottom of the discharge box, and is located between the two partition plates; two iron impurity discharge troughs are fixedly connected to the bottom of the discharge box, and are located on both sides of the ore discharge trough.

[0018] Compared with the existing technology, the beneficial effects of the present invention are:

[0019] 1) The present invention uses a deironing plate to remove iron, and the deironing plate is built into the discharge box below the crusher, thereby integrating the deironing and crushing equipment into one device. Therefore, there is no need to set up a separate disc or belt type deironing device before entering the lower crushing stage. The long strip deironing plate is small in size, simple in structure, low in price, and takes up little space. In short, there is no need to set up a separate deironing equipment type, which can reduce equipment purchase costs and workshop investment.

[0020] 2) The present invention sets an iron removal plate on both sides of the coarse crusher discharge port in the width direction and along the length direction of the discharge port. This clamping method in the width direction first takes advantage of the small size of the material flow in the width direction, which greatly reduces the attenuation of the iron removal magnetic force in the material layer from the root, thereby optimizing the iron removal effect. More importantly, this clamping iron removal method is equivalent to each iron removal part being responsible for the iron removal of only half of the material flow width direction, which in turn reduces the material flow width by half, thereby greatly reducing the attenuation of the iron removal magnetic force, thereby ensuring the iron removal effect and effectively protecting the subsequent medium and fine crushing equipment.

[0021] 3) The iron removal plate of the present invention is installed by inserting the iron removal plate through the holes, and circular through holes are provided at both ends of the iron removal plate for threading ropes to insert and pull out the iron removal plate. This structure is simple and quick to install and maintain.

[0022] 4) The pressure gauge and the iron removal plate of the present invention are connected in a manner where the bolts are not tightened, thereby further ensuring the accuracy of the pressure gauge measurement.

[0023] 5) The iron removal plate of the present invention is arranged on one side of the material flow, and the inner core of the iron removal plate is an electromagnetic plate, and the outer edges of the four sides are provided with a rubber lining layer, and the magnetic field strength is 100-200mT.

[0024] This structure protects the iron removal plate from wear and tear caused by material flow impact, while the 100-200 mT field strength effectively ensures strong adsorption of iron impurities and thorough impurity removal. Furthermore, by covering the surface of the electromagnetic plate with a rubber layer, the service life of the iron removal plate is further extended.

[0025] 6) The present invention fully ensures the timely discharge of iron impurities by arranging a partition plate between the material flow and the two iron removal plates.

[0026] 7) The interlocking of the high-level alarm of the pressure gauge and the power-off signal of the electromagnetic plate of the present invention timely realizes the iron unloading of the iron removal plate, and the delayed automatic power-on mode solidifies the recovery of the iron removal function. The degree of automation is high, no manual operation is required, and the iron removal is thorough. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram of the structure of the present invention;

[0028] Figure 2 for Figure 1 A partial enlarged view of

[0029] Figure 3 for Figure 2 AA cross-sectional view.

[0030] In the figure: 1 - Crusher 11 - Discharge hopper 2 - Discharge box 21 - Iron removal plate perforation 22 - Support beam 23 - Partition plate 3 - Iron removal plate assembly 31 - Iron removal plate 311 - Circular through hole 32 - End sleeve 33 - Base 4 - Ore discharge trough 5 - Iron and iron discharge trough 6 - Pressure gauge DETAILED DESCRIPTION

[0031] The following embodiments of the present invention are described in further detail with reference to the accompanying drawings and examples. The following examples are used to illustrate the present invention but are not intended to limit the scope of the present invention.

[0032] In the description of the present invention, unless otherwise specified, "a plurality of" means two or more; the term

[0033] Directions or positional relationships indicated by terms such as "upper," "lower," "left," "right," "inner," "outer," "front end," "rear end," "head," and "tail" are based on the directions or positional relationships shown in the accompanying drawings and are intended solely to facilitate and simplify the description of the present invention. They do not indicate or imply that the devices or components referred to must have, be constructed, or operate in a specific orientation, and therefore should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0034] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "connected" and "connection" should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integral connection; mechanical connection, electrical connection; direct connection, or indirect connection through an intermediary. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0035] Example:

[0036] like Figure 1-3 As shown, a clamp-type iron removal device includes a crusher 1, a discharge box 2, an iron removal plate assembly 3, an ore discharge chute 4, an iron impurity discharge chute 5, and a pressure gauge 6.

[0037] Crusher 1 is an existing product, a coarse crusher, which can be a jaw crusher, a double-toothed roller crusher, or a single-toothed roller crusher. This embodiment uses a double-toothed roller crusher. A discharge hopper 11 is provided at the bottom of the double-toothed roller crusher, just below the center of the two toothed rollers.

[0038] The discharge box 2 is a rectangular box. Two iron removal plate perforations 21 are located on each of the front and rear side panels of the box. These two perforations 21 are mirror-symmetrically positioned on either side of the discharge hopper 11, 200 to 300 mm apart. The top edge of the perforations 21 is 300 to 500 mm lower than the bottom edge of the crusher's discharge hopper 11. The height of these perforations is 1.2 to 1.3 times the height of the iron removal plates 31, and their width is 1.1 to 1.2 times the width of the plates. A support beam 22 is located below these perforations.

[0039] The iron removal plate assembly 3 includes an iron removal plate 31, an end sleeve 32 and a base 33. The two end sleeves 32 are sleeved on both ends of the iron removal plate 31, and the base 33 is fixed to the bottom of the end sleeve 32.

[0040] The iron removal plate 31 is a long rectangular plate, 300-500mm longer than the front and rear side plates of the discharge box 2, 300-500mm tall, and 80-100mm thick. The inner core of the iron removal plate 31 is an electromagnetic plate, with four outer edges lined with 20-30mm thick rubber, and a magnetic field strength of 100-200mT.

[0041] Circular through holes 311 with a diameter of 10 to 20 mm are provided at both ends of the iron removal plate 31. The circular through holes 311 are used for inserting and pulling the iron removal plate 31 through a rope. This structure is simple and quick to install and maintain.

[0042] The pressure gauge 6 is placed on the support beam 22, the iron removal plate 31 passes through the iron removal plate perforation 21, and the base 33 is placed on the pressure gauge. The base 33, the pressure gauge 6 and the support beam 22 are connected by bolt perforations without tightening screws.

[0043] The upper edge of the pressure gauge 6 is 5 to 10 mm higher than the lower edge of the iron removal plate through-hole 21, and the bolt holes on the pressure gauge 6 are symmetrically arranged about the longitudinal centerline of the iron removal plate through-hole 21. This structural approach ensures smooth insertion and removal of the iron removal plate 31 while also ensuring that the iron removal plate 31 and the iron removal plate through-hole 21 do not contact each other, thereby ensuring the measurement accuracy of the pressure gauge 6.

[0044] A partition plate 23 is provided inside each of the two iron removal plates 31 in the discharge box 2, and the ore discharge chute 4 is fixed to the bottom of the discharge box 2, located between the two partition plates 23. Two iron impurity discharge chutes 5 are fixed to the bottom of the discharge box, located on both sides of the ore discharge chute 4.

[0045] The pressure gauge 6 is interlocked with the electromagnetic plate of the iron removal plate 31. The pressure gauge 6 is provided with an alarm value. When the pressure measured by the pressure gauge 6 is higher than the alarm value, the electromagnetic plate of the iron removal plate 31 is powered off, and the iron impurities are unloaded. After 10 to 20 seconds, the electromagnetic plate of the iron removal plate 31 is powered on to continue iron removal.

[0046] The present invention uses a deironing plate 31 to remove iron, and the deironing plate 31 is built into the discharge box 2 below the crusher 1, thereby integrating the deironing and crushing equipment into one device. Therefore, there is no need to set up a separate disc or belt type deironing device before entering the lower crushing stage. In addition, the long strip deironing plate is small in size, simple in structure, low in price, and takes up little space. In short, there is no need to set up a separate deironing device, which can reduce equipment purchase costs and workshop investment.

[0047] The present invention provides an iron removal plate 31 on both sides of the coarse crusher discharge port in the width direction and along the length direction of the discharge port. This clamping method in the width direction first utilizes the characteristic of the small size of the material flow in the width direction, which greatly reduces the attenuation of the iron removal magnetic force in the material layer from the root, thereby optimizing the iron removal effect. More importantly, this clamping iron removal method is equivalent to each iron removal unit being responsible for iron removal in the width direction of only half of the material flow, which in turn reduces the material flow width by half, thereby greatly reducing the attenuation of the iron removal magnetic force, thereby ensuring the iron removal effect and effectively protecting the subsequent medium and fine crushing equipment.

[0048] The iron removal plate 31 of the present invention is installed by inserting into the iron removal plate through hole 21, and circular through holes 311 are provided at both ends of the iron removal plate 31 for threading ropes to insert and pull out the iron removal plate 31. This structure is simple and quick to install and maintain.

[0049] The pressure gauge 6 and the iron removal plate 31 of the present invention are connected in a manner where the bolts are not tightened, thereby further ensuring the measurement accuracy of the pressure gauge 6 .

[0050] The iron removal plate 31 of the present invention is positioned on one side of the material flow. Its core is an electromagnetic plate, and its four outer edges are lined with a rubber layer. The magnetic field strength is 100 to 200 mT. This structure protects the iron removal plate 31 from wear and tear from the material flow. The 100 to 200 mT field strength effectively ensures strong adsorption of iron impurities, ensuring thorough impurity removal. Furthermore, the rubber layer covering the electromagnetic plate further extends the service life of the iron removal plate 31.

[0051] The present invention fully ensures the timely discharge of iron impurities by arranging the partition plate 23 between the material flow and the two iron removal plates 31.

[0052] The interlocking of the high-level alarm of the pressure gauge 6 and the power-off signal of the electromagnetic plate of the iron removal plate 31 of the present invention timely realizes the iron unloading of the iron removal plate 31, and the delayed automatic power-on mode solidifies the recovery of the iron removal function. The degree of automation is high, no manual operation is required, and the iron removal is thorough.

[0053] 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 clamp-type iron removal device, characterized in that: The system comprises a crusher, a discharge box, an iron removal plate assembly, an ore discharge chute and an iron and iron debris discharge chute; the discharge box is fixedly connected to the bottom of the crusher discharge port, and the iron removal plate assembly is inserted into the discharge box; the iron removal plate assembly comprises an iron removal plate, the inner core of which is an electromagnetic plate. The iron removal plate assembly is located on both sides of the crusher discharge port in the width direction, is mirror-symmetrical with the width center line of the discharge box as the center of symmetry, and is arranged along the length direction of the discharge box; The discharge box is a rectangular box, and the front and rear side panels of the discharge box are provided with iron removal plate perforations, and the two iron removal plate perforations are symmetrically arranged on both sides of the crusher discharge port; It also includes a pressure gauge, a support beam is provided below the iron removal plate perforation, the pressure gauge is fixedly connected to the support beam, and the iron removal plate assembly is fixedly connected to the pressure gauge; The pressure gauge is interlocked with the electromagnetic plate, and the pressure gauge is provided with an alarm value. When the pressure value measured by the pressure gauge is higher than the alarm value, the electromagnetic plate is powered off and the iron impurities are unloaded. After 10 to 20 seconds, the electromagnetic plate is powered on to continue iron removal. The iron removal plate assembly also includes an end sleeve and a base; the end sleeve is sleeved on both ends of the iron removal plate, and the base is fixed to the bottom of the end sleeve; The iron removal plate is a long rectangular plate, and the outer edges of the four sides of the inner core of the iron removal plate are provided with a rubber lining layer, and the magnetic field strength is 100~200mT; Circular through holes are provided on both sides of the iron removal plate; A partition plate is provided on each inner side of the two iron removal plates in the discharge box. The ore discharge trough is fixedly connected to the bottom of the discharge box and is located between the two partition plates. Two iron impurity discharge troughs are fixedly connected to the bottom of the discharge box and are located on both sides of the ore discharge trough.

2. The clamp-type iron removal device according to claim 1, characterized in that: The crusher is a jaw crusher, a double-toothed roller crusher or a single-toothed roller crusher.

3. The clamp-type iron removal device according to claim 1, characterized in that: The iron removal plate assembly, the pressure gauge and the support beam are connected from top to bottom by bolt penetration, without any tightening screws.

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