Self-flowing transverse magnetic separation dry and wet dual-purpose permanent magnet machine

Abstract

The present application belongs to the field of permanent magnetic magnetic separation equipment, and particularly relates to a self-flow type transverse magnetic separation dry water dual-purpose permanent magnet machine, which comprises a guide plate unit connected with a rack, a belt drive unit is arranged obliquely, a feeding hopper is arranged above the higher side of a conveying belt, a magnetic ore receiving hopper is arranged below the end of the belt drive unit, a non-magnetic ore receiving hopper is arranged below the lower side of the conveying belt, guide scrapers are arranged above the conveying belt in parallel and at intervals, the guide scrapers are perpendicular to the long magnet gathering iron sheets, a plurality of dredging notches are arranged at intervals at the bottom edge of the guide scrapers, the number and distribution position of the dredging notches correspond to the long magnet gathering iron sheets, the present application can be used for wet type and dry type ore dressing and has strong environmental adaptability, through the side inclination of the conveying belt, the sorted ore falls through the strong magnetic field for multiple times, so that the magnetic ore is fully adsorbed, and the sorting effect is good. The present application is beneficial to saving process and equipment cost and improving production efficiency.

Description

Technical Field

[0001] This invention belongs to the field of permanent magnet magnetic separation equipment, specifically referring to a self-flowing transverse magnetic separator for both dry and water use. Background Technology

[0002] The basic structure of existing permanent magnet separators includes a conveyor belt unit, a magnet unit, a feed hopper, and receiving hoppers for both magnetic and non-magnetic ores. The ore to be separated falls from the outlet of the feed hopper onto the conveyor belt. The magnet unit uses magnetic force to attract the magnetic ore and feed it into the receiving hopper. Based on whether water is used for assistance, they are divided into dry magnetic separators and wet magnetic separators. (See wet magnetic separator...) Figure 4 The conveyor unit transports materials towards the higher end. Non-magnetic ores, washed by water and under gravity, roll towards the lower end in the opposite direction of the conveyor belt. Magnetic ores, attracted by the magnetic units, adhere to the conveyor belt and are transported to the higher end. Since there are no magnetic units below the highest conveyor belt, the magnetic ores fall directly from the highest point into the magnetic ore receiving hopper below. When water access is inconvenient, a dry magnetic separator is used (see...). Figure 5 In a dry magnetic separator, a magnetic unit is installed on the roller at the end of the conveyor system. Non-magnetic ores are thrown off and fall into the receiving hopper in front of the roller. Magnetic ores are attracted by magnetic force to the conveyor belt on the roller. After the conveyor belt leaves the magnetic unit's magnetic field, the magnetically separated ores fall into the receiving hopper under gravity, thus achieving ore separation. To increase the magnetic force of the magnetic unit, both dry and wet magnetic separators use a magnetic unit structure composed of multiple sets of parallel-arranged magnets and permanent magnets sandwiched between them. See [link to relevant documentation]. Figure 6 The magnetic field is strongest above and near the magnet sheet, and weakest or even zero in the center of two adjacent magnet sheets. The magnetic field of the entire magnetic unit is distributed in alternating strong and weak directions perpendicular to the direction of the conveyor belt. Whether it is a dry magnetic separator or a wet magnetic separator, the direction of the ore to be processed is parallel to the direction of the conveyor belt (or countercurrent or cocurrent). Magnetic ores in the weak magnetic field area cannot be adsorbed onto the conveyor belt, causing the magnetic ores to be sent into the non-magnetic ore receiving hopper along with the non-magnetic ores. In actual operation, in order to improve the separation effect, the separated non-magnetic ores need to be separated again, which increases the production cost and reduces the production efficiency. Summary of the Invention

[0003] The purpose of this invention is to provide a self-flowing transverse magnetic separator that is both dry and water-use, with a simple structure and good separation effect, so as to completely separate magnetic ore from non-magnetic ore in a single separation process.

[0004] The technical solutions for achieving the above objectives include the following:

[0005] A self-flowing transverse magnetic separator for both dry and water applications includes a feed hopper mounted on a frame, a belt drive unit consisting of two rollers and a conveyor belt, and magnetic and non-magnetic ore receiving hoppers. The feed hopper is positioned above the belt drive unit, while the magnetic and non-magnetic ore receiving hoppers are positioned below it. A magnet unit is located below the conveyor belt, comprising multiple parallel elongated magnetic plates and permanent magnets sandwiched between them. The elongated magnetic plates are parallel to the conveying direction of the belt. During operation, the magnetic ore is attracted by the elongated magnetic plates and transported to the end of the belt drive unit. The separator also includes a guide plate unit connected to the frame. The rollers are positioned with one end higher than the other, causing the belt drive unit to be inclined. The feed hopper is positioned below the conveyor belt... Above the higher side of the belt, the magnetic ore receiving hopper is located below the end of the belt drive unit, and the non-magnetic ore receiving hopper is located below the lower side of the conveyor belt. The guide plate unit includes several guide scrapers, which are parallel to each other and spaced apart above the conveyor belt surface. The guide scrapers are perpendicular to the elongated magnetic sheet. The space between each pair of adjacent guide scrapers forms an inclined longitudinal channel. The bottom edge of the guide scraper is close to the surface of the conveyor belt. The bottom edge of the guide scraper is provided with multiple shunting notches at intervals. The number and distribution of the shunting notches correspond to the elongated magnetic sheet. The width of the shunting notches is adapted to the width of the magnetic ore adsorbed on the conveyor belt during operation, and the height of the shunting notches is not less than the thickness of the magnetic ore adsorbed on the conveyor belt.

[0006] Furthermore, the tilt angle of the belt drive unit is 10°-50°. When wet magnetic separation is used, this tilt angle can be set smaller; when dry magnetic separation is used, in order to improve the rolling effect, this tilt angle needs to be set larger.

[0007] Furthermore, the tilt angle of the belt drive unit is adjustable. The tilt angle can be flexibly adjusted on-site based on the ore rolling effect to achieve optimal ore rolling performance.

[0008] Furthermore, the guide plate unit also includes several deceleration baffles. These deceleration baffles connect two adjacent guide scrapers and are spaced apart within the longitudinal channel. The gap between the bottom edge of the deceleration baffle and the conveyor belt surface serves as the ore falling channel. The deceleration baffles reduce the thickness of the ore accumulation in the longitudinal channel, allowing the top of the ore to be sorted to be continuously flattened as it passes through the gap. This ensures sufficient contact between the ore and the conveyor belt, separating (adsorbing) the magnetic ore within it.

[0009] Furthermore, the deceleration baffle is inclined relative to the guide scraper, with the end of the deceleration baffle closer to the end of the belt drive unit being higher than the end farther from the end of the belt drive unit.

[0010] Furthermore, the gap between the bottom edge of the deceleration baffle and the surface of the transmission belt gradually decreases toward the lower side of the transmission belt.

[0011] Furthermore, the height of the gap between the bottom edge of the deceleration baffle and the surface of the transmission belt is adjustable to accommodate different ores.

[0012] Furthermore, the two sides of the guide gap are staggered in the direction of the conveyor belt's movement, with the lower side edge closer to the end of the belt drive unit. This staggered arrangement helps prevent non-magnetic ore accumulated on the upper end (higher side) of the magnetic ore from being scraped off and entering the next longitudinal channel along with the magnetic ore through the guide gap, thus further improving the purity of the magnetic ore.

[0013] Furthermore, the distance between the bottom edge of the guide scraper and the surface of the transmission belt is no more than 2mm.

[0014] In the self-flowing transverse magnetic separator for both dry and water use, the ore to be separated falls from the feed hopper to the higher side of the conveyor belt. The ore falls into multiple longitudinal channels separated by guide scrapers and rolls along the longitudinal channels to the lower side of the conveyor belt. During the rolling process, the ore passes through alternating strong and weak magnetic fields multiple times. Magnetic ore is attracted to the conveyor belt by the strong magnetic field and is carried by the conveyor belt to the end of the belt drive unit. The guide scraper has a guide gap at the bottom edge to maintain a channel for the conveying of magnetic ore. Non-magnetic ore, under the action of gravity and without the attraction of the conveyor belt, rolls to the lower side of the conveyor belt under the constraint of the guide scraper, thus achieving ore separation. The deceleration baffle reduces the thickness of the ore accumulation in the longitudinal channels, so that the top of the ore is continuously flattened, thereby achieving full contact between the ore and the conveyor belt and separating the magnetic ore.

[0015] The self-flowing transverse magnetic separator of this invention can be used for both dry and wet separation, and has strong environmental adaptability. By tilting the conveyor belt, the direction of the ore to be separated is perpendicular to the magnetic sheet. During the rolling, the ore is passed through the strong magnetic field multiple times, thereby achieving full adsorption of the magnetic ore. This ensures that the magnetic ore can be completely separated from the non-magnetic ore in one separation, resulting in good separation effect, saving process and equipment costs, and improving production efficiency.

[0016] It should be noted that the bottom edge of the guide scraper described in this case is close to the surface of the transmission belt. This means that the bottom edge of the guide scraper must not damage the surface of the transmission belt during operation, while also being close enough to ensure that the guide scraper achieves a blocking effect on non-magnetic ores. Those skilled in the art can obtain a reasonable distance through limited experiments, based on the type of ore and the actual performance of the machine, guided by the instructions in this case. Furthermore, the following techniques are commonly used by those skilled in the art: setting corresponding electric drive mechanisms or cylinder drive mechanisms on the frame to drive relevant components to achieve adjustable tilt angle of the belt drive unit and adjustable height of the gap between the bottom edge of the deceleration baffle and the transmission belt surface, as described in this case. These will not be elaborated upon here. Attached Figure Description

[0017] Figure 1 A schematic diagram of the structure of a self-flowing transverse magnetic separator for both dry and water use, as shown in the embodiment;

[0018] Figure 2 Another structural schematic diagram of the self-flowing transverse magnetic separator dry and water dual-purpose permanent magnet generator as an example;

[0019] Figure 3 This is a schematic diagram showing the positional relationship between the guide plate unit and the magnet unit in an embodiment.

[0020] Figure 4 This is a schematic diagram of the structure of a wet magnetic separator in the prior art;

[0021] Figure 5 This is a schematic diagram of the structure of a dry magnetic separator in the prior art;

[0022] Figure 6 This is a schematic diagram of the magnetic field strength distribution of a magnet unit.

[0023] In the diagram, the black arrows indicate the conveyor belt conveying direction. 1. Magnetic ore receiving hopper; 2. Non-magnetic ore receiving hopper; 3. Roller; 4. Conveyor belt; 5. Feed hopper; 6. Magnet unit; 6-1. Magnet sheet; 7. Guide plate unit; 7-1. Guide scraper; 7-1-1. Clearing notch; 7-2. Deceleration baffle. Detailed Implementation

[0024] The present invention will be described in detail below with reference to the embodiments.

[0025] See Figures 1 to 3 and Figure 6A self-flowing transverse magnetic separator for both dry and water use, comprising a feed hopper 5 mounted on a frame, a belt drive unit consisting of two rollers 3 and a conveyor belt 4, a magnetic ore receiving hopper 1, and a non-magnetic ore receiving hopper 2. A magnet unit 6 is located below the conveyor belt 4, comprising multiple parallel elongated magnetic sheets 6-1 and permanent magnets sandwiched between them. The elongated magnetic sheets 6-1 are parallel to the conveying direction of the conveyor belt 4. During operation, the magnetic ore is attracted to the conveyor belt 4 by the elongated magnetic sheets 6-1 and transported to the end of the belt drive unit. The separator also includes a guide plate unit 7 connected to the frame. The rollers 3 are positioned such that one end is higher than the other, causing the belt drive unit to be inclined. In this embodiment, based on the inventor's research on a certain location... Based on the sorting experiments of iron ore powder in the field, when wet magnetic separation is used, the inclination angle of the belt drive unit is about 15°, which can ensure that the ore rolling speed matches the sorting magnetic ore speed. When dry magnetic separation is used, the inclination angle of the belt drive unit is about 40°, which can also ensure that the ore rolling speed matches the sorting magnetic ore speed. The feed hopper 5 is located above the higher side of the conveyor belt 4, the magnetic ore receiving hopper 1 is located below the end of the belt drive unit, and the non-magnetic ore receiving hopper 2 is located below the lower side of the conveyor belt 4. The guide plate unit 7 includes several guide plate scrapers 7-1 and several deceleration baffles 7-2. The guide plate scrapers 7-1 are parallel to each other and spaced apart above the surface of the conveyor belt 4. The guide plate scrapers 7-1 are vertical. The space between each pair of adjacent guide scrapers 7-1 forms an inclined longitudinal channel on the elongated magnet sheet 6-1. The bottom edge of the guide scraper 7-1 is close to the surface of the conveyor belt 4. In this embodiment, the distance between the bottom edge of the guide scraper 7-1 and the surface of the conveyor belt 4 is 2mm to ensure that non-magnetic ore is prevented from being carried by the conveyor belt into the next longitudinal channel from below the bottom edge, while also avoiding the bottom edge of the guide scraper 7-1 rubbing against the conveyor belt and causing belt damage. The bottom edge of the guide scraper 7-1 is provided with multiple guide notches 7-1-1 at intervals. The number and distribution of the guide notches 7-1-1 correspond to the elongated magnet sheet 6-1. The width of the guide notches 7-1-1 is the same as the distance between the guide scraper 7-1 and the conveyor belt 4 during operation. The width of the magnetic ore is adapted to the magnetic ore, and the height of the guide gap 7-1-1 is not less than the thickness of the magnetic ore adsorbed on the conveyor belt 4. The size of the guide gap 7-1-1 is designed to allow the magnetic ore adsorbed on the belt to pass smoothly, and it cannot be too wide, otherwise non-magnetic ore will enter the next longitudinal channel from the gap. The two side edges of the guide gap 7-1-1 are staggered in the direction of movement of the conveyor belt 4, with the lower side edge being closer to the end of the belt drive unit. This staggered configuration helps to prevent the non-magnetic ore accumulated on the upper end (higher side) of the magnetic ore from being scraped off and entering the next longitudinal channel with the magnetic ore through the guide gap 7-1-1, which helps to further improve the purity of the magnetic ore.The deceleration baffles 7-2 are arranged parallel and spaced apart, and connect all the guide plates and scrapers 7-1. The end of the deceleration baffle 7-2 closest to the end of the belt drive unit is higher than the end furthest from the belt drive unit, and is inclined relative to the guide plates and scrapers 7-1. This inclined arrangement helps to ensure that the accumulated ore does not pile up too high in the longitudinal channel. In this embodiment, the angle between the deceleration baffle 7-2 and the guide plates and scrapers 7-1 is 30°. A gap is left between the bottom edge of the deceleration baffle 7-2 and the four sides of the conveyor belt as a channel for ore to fall. The function of the deceleration baffle 7-2 is to reduce the thickness of the ore to be sorted in the longitudinal channel, so that the top of the ore to be sorted is continuously flattened when passing through the gap, thereby achieving full contact between the ore to be sorted and the conveyor belt, and separating (adsorbing) the magnetic ore. The height of the gap between the bottom edge of the deceleration baffle 7-2 and the four sides of the conveyor belt is adjustable to adjust the rolling speed of the ore in the longitudinal channel.

[0026] The self-flowing transverse magnetic separator, a dual-purpose dry and water permanent magnet machine of this embodiment, can adapt to both water-rich and waterless mining environments for sorting. It has strong adaptability and adopts an inclined belt conveyor unit. The ore to be sorted passes through the magnetic field of alternating strong and weak magnetic fields multiple times, ensuring that the magnetic plates 6-1 of the magnet unit 6 adsorb the magnetic ore multiple times. This achieves complete adsorption of the magnetic ore on the conveyor belt (near the strong magnetic field). The magnetic ore passes through the guide gap 7-1-1 and finally falls into the magnetic ore receiving hopper 1 at the end of the belt conveyor unit. Non-magnetic ore rolls down in the longitudinal channel and finally falls into the non-magnetic ore receiving hopper 2 below the lower side of the conveyor belt, thus realizing the sorting function.

Claims

1. A self-flowing transverse magnetic separator for both dry and water use, comprising a feed hopper mounted on a frame, a belt drive unit consisting of two rollers and a conveyor belt, and magnetic ore receiving hoppers and non-magnetic ore receiving hoppers. The feed hopper is positioned above the belt drive unit, while the magnetic ore receiving hoppers and non-magnetic ore receiving hoppers are both positioned below the belt drive unit. A magnet unit is located below the conveyor belt, comprising multiple parallel elongated magnetic sheets and permanent magnets sandwiched between the elongated magnetic sheets. The elongated magnetic sheets are parallel to the conveying direction of the conveyor belt. During operation, the magnetic ore is attracted by the elongated magnetic sheets and transported to the end of the belt drive unit. The feature is that... It also includes a guide plate unit connected to the frame. The roller is higher at one end and lower at the other, so that the belt drive unit is set at an angle. The feed hopper is set above the higher side of the conveyor belt. The magnetic ore receiving hopper is set below the end of the belt drive unit. The non-magnetic ore receiving hopper is set below the lower side of the conveyor belt. The guide plate unit includes several guide scrapers. The guide scrapers are parallel to each other and spaced apart above the surface of the conveyor belt. The guide scrapers are perpendicular to the elongated magnetic sheet. The space between each pair of adjacent guide scrapers forms an inclined longitudinal channel. The bottom edge of the guide scraper is close to the surface of the conveyor belt. The bottom edge of the guide scraper is provided with multiple shunting notches at intervals. The number and distribution position of the shunting notches correspond to the elongated magnetic sheet. The width of the shunting notches is adapted to the width of the magnetic ore adsorbed on the conveyor belt during operation. The height of the shunting notches is not less than the thickness of the magnetic ore adsorbed on the conveyor belt.

2. The self-flowing transverse magnetic separator for both dry and water use as described in claim 1, characterized in that, The tilt angle of the belt drive unit is 10°-50°.

3. The self-flowing transverse magnetic separator for both dry and water use according to claim 2, characterized in that, The tilt angle of the belt drive unit is adjustable.

4. The self-flowing transverse magnetic separator for both dry and water use according to claim 1, characterized in that, The guide plate unit also includes several deceleration baffles. The deceleration baffles are connected to two adjacent guide scrapers and are spaced apart in the longitudinal channel. The gap between the bottom edge of the deceleration baffle and the surface of the conveyor belt is the ore falling channel.

5. The self-flowing transverse magnetic separator for both dry and water use according to claim 4, characterized in that, The deceleration baffle is inclined relative to the guide scraper, with the end of the deceleration baffle closer to the end of the belt drive unit being higher than the end farther from the end of the belt drive unit.

6. The self-flowing transverse magnetic separator for both dry and water use according to claim 4, characterized in that, The gap between the bottom edge of the deceleration baffle and the surface of the transmission belt gradually decreases towards the lower side of the transmission belt.

7. The self-flowing transverse magnetic separator for both dry and water use according to claim 4, characterized in that, The height of the gap between the bottom edge of the deceleration baffle and the surface of the transmission belt is adjustable.

8. The self-flowing transverse magnetic separator for both dry and water use according to claim 1, characterized in that, The two sides of the guide gap are staggered in the direction of movement of the transmission belt, with the lower side being closer to the end of the belt drive unit.

9. The self-flowing transverse magnetic separator for both dry and water use according to claim 1, characterized in that, The distance between the bottom edge of the guide scraper and the surface of the transmission belt is no more than 2mm.

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