Screening and impurity removing device for tungsten-tin ore dressing

Abstract

The utility model relates to a screening and impurity removing device for tungsten-tin ore dressing in the technical field of ore dressing equipment, which comprises a crushing box, a discharging pipe of the crushing box is connected with a magnetic separation assembly, the magnetic separation assembly comprises a horizontal magnetic separation cylinder, a feeding screw rod is arranged in the magnetic separation cylinder in a matched mode, and an electromagnet is arranged on the feeding screw rod. One end of the feeding screw penetrates through the magnetic separation cylinder and then is connected with a positive and negative rotation motor, a conductive slip ring is arranged on the magnetic separation cylinder corresponding to the other end of the feeding screw, the electromagnet is connected with an external power source through the conductive slip ring, a switch is arranged on a path of the electromagnet and the external power source, and the electromagnet is controlled to be powered on and powered off through the switch. And after power failure, the electromagnet loses magnetism, and the adsorbed magnetic impurities fall into the magnetic separation cylinder and are discharged. Magnetic impurities can be removed after ore is crushed, the impurity removal effect is good, efficiency is high, and ore separation operation is facilitated.

Description

Technical Field

[0001] This utility model belongs to the field of mineral processing equipment technology, specifically relating to a screening and impurity removal device for tungsten-tin ore beneficiation. Background Technology

[0002] The mined tungsten-tin ore first undergoes preliminary crushing. Because the crushed ore contains iron impurities such as drill bits, preliminary impurity removal is necessary to prevent these impurities from damaging the machinery. Patent document CN204892123 U discloses an automatic screening and impurity removal device specifically for tungsten-tin ore beneficiation. It includes a crusher, discharge pipe, discharge port, vibrating screen, collection box, impurity removal channel, air nozzle, high-pressure air pump, magnetic detector, DC power supply, sliding rheostat, electromagnet, and control system. The crusher is connected to the discharge pipe, and the impurity removal channel has a square cross-section and is installed below the discharge pipe. A discharge port is located at the upper right end of the impurity removal channel. While this patent solves the problem of high labor intensity in existing manual impurity removal methods for tungsten-tin ore, the electromagnet is installed on the inner wall of the impurity removal channel. As the ore passes through the channel, magnetic impurities located in the center of the channel are not easily attracted by the electromagnet, and the electromagnet's operating time is relatively short, resulting in poor magnetic impurity removal efficiency. Therefore, a screening and impurity removal device for tungsten-tin ore beneficiation is needed to solve the above-mentioned technical problems. Utility Model Content

[0003] To address the aforementioned deficiencies in existing technologies, this utility model provides a screening and impurity removal device for tungsten-tin ore beneficiation, comprising a crushing box with a feed inlet at the top and a discharge pipe with a switch valve at the bottom. The discharge pipe is connected to a magnetic separation assembly, which includes a horizontal magnetic separator drum. A feeding screw is fitted inside the magnetic separator drum, and an electromagnet is mounted on the feeding screw. One end of the feeding screw passes through the magnetic separator drum and is connected to a forward and reverse motor. A conductive slip ring is mounted on the magnetic separator drum at the other end of the feeding screw. The electromagnet is connected to an electric wire, which is connected to an external power source through the conductive slip ring. A switch is provided in the path between the electromagnet and the external power source. The magnetic separator drum has a discharge pipe and a slag discharge pipe, both equipped with switch valves. The discharge pipe and slag discharge pipe are respectively located at both ends of the magnetic separator drum. The electromagnet is powered on and off by a switch. When powered on, the electromagnet generates magnetism, which can attract magnetic impurities in the passing material. When the power is turned off, the electromagnet loses its magnetism, and the attracted magnetic impurities fall into the magnetic separator under the action of gravity and are transported to the slag discharge pipe for discharge.

[0004] Preferably, the crushing box is equipped with a crushing assembly, which includes a vertical rotating shaft and crushing blades. Multiple crushing blades are fixed on the vertical rotating shaft, and a stepper motor is connected to the upper end of the shaft, passing through the crusher. This effectively crushes the ore.

[0005] Preferably, the bottom of the magnetic separator is covered with filter holes, a first collection box is located below the filter holes, a second collection box is connected to the discharge pipe, and a slag collection box is connected to the slag discharge pipe. The filter holes can filter the material and further improve the screening effect.

[0006] Preferably, the feeding screw includes a rotating rod and feeding blades fixed on the rotating rod, and an electromagnet is fixed to the outside of both the rotating rod and the feeding blades. This arrangement can increase the magnetic separation area and further enhance the adsorption of magnetic impurities.

[0007] Preferably, the feeding screw is equipped with a vibrator. This device allows the feeding screw to vibrate after a power outage, shaking off the adsorbed magnetic impurities into the magnetic separator, where they are then conveyed by the feeding screw to the slag discharge port for discharge.

[0008] This invention also includes other components that enable the screening and impurity removal device for tungsten-tin ore beneficiation to function properly, such as control components for stepper motors, control components for switching valves, control components for forward and reverse motors, and control components for vibrators, all of which are conventional technologies in the field. Furthermore, devices or components not limited in this invention, such as vibrators, conductive slip rings, and wires, all employ conventional technologies and equipment in the field.

[0009] Working principle: The ore enters the crushing box through the feed inlet and is crushed before entering the magnetic separator. At this time, the slag discharge pipe is closed, the feed pipe is open, and the electromagnet is energized. The feeding screw transports the material while simultaneously adhering magnetic impurities to the electromagnet. The material after impurity removal is discharged through the feed pipe. After the material is discharged, the feed pipe is closed, the slag discharge pipe is opened, the electromagnet is de-energized and loses its magnetic attraction, and the magnetic impurities fall into the magnetic separator. The reversible motor rotates in the opposite direction, discharging the magnetic impurities from the slag discharge port. To ensure the impurity removal effect, the material discharged from the feed pipe can be put back into the crushing box, and the above operation can be repeated multiple times until the magnetic impurities are effectively removed.

[0010] The beneficial effects of this utility model are: it can remove magnetic impurities from ore after crushing, with good impurity removal effect and high efficiency, which is beneficial to mineral beneficiation operations. Attached Figure Description

[0011] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0012] Figure 1 This is a schematic diagram of the structure of a screening and impurity removal device for tungsten-tin ore beneficiation in Embodiment 1 of this utility model;

[0013] Figure 2 This is a schematic diagram of a screening and impurity removal device for tungsten-tin ore beneficiation in Embodiment 2 of this utility model.

[0014] In the diagram: 1. Crushing box; 2. Feed inlet; 3. Stepper motor; 4. Vertical rotating shaft; 5. Crushing blade; 6. Discharge pipe; 7. Magnetic separator; 8. Feeding screw; 9. Forward and reverse motor; 10. Slag discharge pipe; 11. Slag collection box; 12. Conductive slip ring; 13. Discharge pipe; 14. Collection box two; 15. Filter hole; 16. Collection box one. Detailed Implementation

[0015] The present invention will now be clearly described with reference to the accompanying drawings and specific embodiments. This description is merely for explaining the present invention and is not intended to limit it. Any modifications, equivalent substitutions, improvements, etc., made by those skilled in the art based on the embodiments of the present invention without inventive effort to obtain all other embodiments should be included within the protection scope of the present invention.

[0016] Example 1

[0017] like Figure 1 As shown, this utility model provides a screening and impurity removal device for tungsten-tin ore beneficiation, including a crushing box 1, a feed inlet 2 at the top of the crushing box 1, and a discharge pipe 6 with a switch valve at the bottom of the crushing box 1. The discharge pipe 6 is connected to a magnetic separation assembly, which includes a horizontal magnetic separation cylinder 7. A feeding screw 8 is fitted inside the magnetic separation cylinder 7. An electromagnet is installed on the feeding screw 8. One end of the feeding screw 8 passes through the magnetic separation cylinder 7 and is connected to a forward and reverse motor 9. A conductive slip ring 12 is installed on the magnetic separation cylinder 7 corresponding to the other end of the feeding screw 8. The electromagnet is connected to an electric wire, which is connected to an external power source through the conductive slip ring 12. A switch is installed in the path between the electromagnet and the external power source. The magnetic separation cylinder 7 is equipped with a discharge pipe 13 and a slag discharge pipe 10, both of which are equipped with switch valves. The discharge pipe 13 and the slag discharge pipe 10 are respectively located at both ends of the magnetic separation cylinder 7. The electromagnet is powered on and off by a switch. When powered on, the electromagnet generates magnetism, which can attract magnetic impurities in the passing material. When powered off, the electromagnet loses its magnetism, and the attracted magnetic impurities fall into the magnetic separator 7 under the action of gravity and are transported to the slag discharge pipe 10 for discharge.

[0018] Preferably, the crushing box 1 is equipped with a crushing assembly, which includes a vertical rotating shaft 4 and crushing blades 5. Multiple crushing blades 5 are fixed on the vertical rotating shaft 4, and a stepper motor 3 is connected to the upper end of the vertical rotating shaft 4, passing through the crusher. This effectively crushes the ore.

[0019] Preferably, the feeding screw 8 includes a rotating rod and feeding blades fixed on the rotating rod, and an electromagnet is fixed to the outside of both the rotating rod and the feeding blades. This arrangement can increase the magnetic separation area and further enhance the adsorption of magnetic impurities.

[0020] Preferably, the feeding screw 8 is equipped with a vibrator. This device allows the feeding screw 8 to vibrate after a power outage, shaking off the adsorbed magnetic impurities into the magnetic separator 7, which are then discharged by the feeding screw 8 to the slag discharge port.

[0021] During operation, the ore enters the crushing chamber through the feed inlet and is crushed before entering the magnetic separator. At this time, the slag discharge pipe is closed, the feed pipe is open, and the electromagnet is energized. The feeding screw, while transporting the material, also attracts magnetic impurities onto the electromagnet, extending the removal time and distance, thus improving the removal efficiency. The removed material is discharged through the feed pipe. After the material is discharged, the feed pipe is closed, the slag discharge pipe is opened, the electromagnet is de-energized and loses its magnetic attraction, and the magnetic impurities fall into the magnetic separator. The reversible motor rotates in the opposite direction, discharging the magnetic impurities from the slag discharge port. To ensure the removal effect, the material discharged from the feed pipe can be fed back into the crushing chamber, and the above operation can be repeated multiple times until the magnetic impurities are effectively removed.

[0022] Example 2

[0023] like Figure 2 As shown, the difference between this embodiment and Embodiment 1 is that the bottom of the magnetic separator 7 is covered with filter holes 15, a first collection box 16 is provided below the filter holes 15, the discharge pipe 13 is connected to a second collection box 14, and the slag discharge pipe 10 is connected to a slag collection box 11. The filter holes 15 can filter the material and further improve the screening effect.

[0024] During operation, the ore enters the crushing chamber through the feed inlet and is crushed before entering the magnetic separator. At this time, the slag discharge pipe is closed, the feed pipe is open, and the electromagnet is energized. The feeding screw, while transporting the material, attracts magnetic impurities to the electromagnet. Smaller ore particles are discharged through the filter holes into collection box one, while larger particles, after impurity removal, enter collection box two through the feed pipe. After the material is discharged, the feed pipe is closed, cleaning the material in collection box one. The slag discharge pipe is then opened, the electromagnet is de-energized, and the magnetic impurities fall into the magnetic separator. The reversible motor rotates in the opposite direction, discharging the magnetic impurities from the slag discharge port and the filter holes. To ensure effective impurity removal, the ore in collection boxes one and two can be re-entered into the crushing chamber, and the above operation can be repeated multiple times until the magnetic impurities are effectively removed.

[0025] The stepper motor, switching valve, switch, conductive slip ring, electromagnet, etc. in the above embodiments are all existing technologies. This application does not make any improvements to them, but only utilizes their existing functions. For their specific structure and principle, please refer to the product manual or existing technical data, which are all existing technologies.

[0026] The embodiments of this utility model have been described above. These descriptions are exemplary and not exhaustive, nor are they limited to the disclosed embodiments. Many modifications and variations will be apparent to those skilled in the art without departing from the scope and spirit of the described embodiments. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A screening and impurity removal device for tungsten-tin ore beneficiation, comprising a crushing box, a feed inlet at the top of the crushing box, and a discharge pipe with a switch valve at the bottom of the crushing box, characterized in that: The discharge pipe is connected to a magnetic separation assembly, which includes a horizontal magnetic separator drum. A feeding screw is fitted inside the magnetic separator drum, and an electromagnet is installed on the feeding screw. One end of the feeding screw passes through the magnetic separator drum and is connected to a forward and reverse motor. A conductive slip ring is installed on the magnetic separator drum corresponding to the other end of the feeding screw. An electric wire is connected to the electromagnet, and the electric wire is connected to an external power source through the conductive slip ring. A switch is installed in the path between the electromagnet and the external power source. The magnetic separator drum is equipped with a discharge pipe and a slag discharge pipe, and both the discharge pipe and the slag discharge pipe are equipped with switch valves. The discharge pipe and the slag discharge pipe are respectively located at both ends of the magnetic separator drum.

2. The screening and impurity removal device for tungsten-tin ore beneficiation according to claim 1, characterized in that: The crushing box is equipped with a crushing assembly, which includes a vertical rotating shaft and crushing blades. Multiple crushing blades are fixed on the vertical rotating shaft, and a stepper motor is connected to the upper end of the vertical rotating shaft through the crusher and to the rear.

3. A screening and impurity removal device for tungsten-tin ore beneficiation according to claim 1, characterized in that: The bottom of the magnetic separator is covered with filter holes, and a first collection box is provided below the filter holes. The discharge pipe is connected to a second collection box, and the slag discharge pipe is connected to a slag collection box.

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