Novel energy-saving and environment-friendly mineral processing technology

Abstract

The invention discloses a novel energy-saving and environment-friendly mineral processing technology, and belongs to the technical field of mineral processing. The process comprises the following steps: crushing to 1-3cm, and carrying out electric separation, pre-enrichment and waste throwing; rolling to be less than or equal to 5mm + jigging and re-enriching; over-grinding is avoided through a ball-milling and wet-type high-frequency vibration plane screen; a box-type linear suspension vibration machine and a 6S table concentrator are used as main gravity separation, and flotation is used as auxiliary combined separation. According to the method, two-stage pre-enrichment is realized, the grinding grade is improved, and waste rock / gangue resource utilization is realized; pollution is controlled from the source through agent-free reselection, the ball milling efficiency is greatly improved, the energy consumption is reduced, and the recovery rate is improved. The method solves the problems of high ore grinding energy consumption, heavy medicament pollution, low resource utilization rate, high tailing pressure and the like of a traditional process, has economic, social and ecological benefits, and is suitable for efficient and green ore dressing of colored and precious metal ores.

Description

Technical Field

[0001] This invention belongs to the field of mineral processing engineering technology, specifically relating to an energy-saving and environmentally friendly mineral processing technology for non-ferrous precious metal ores, which is particularly suitable for the efficient separation and resource utilization of low-grade and difficult-to-process ores. Background Technology

[0002] Existing beneficiation processes for non-ferrous and precious metal ores generally employ the traditional crushing-grinding-flotation process, which has the following common drawbacks: 1. The grinding fineness requirements are high, the amount of reagents used is large, the tailings mud and reagent pollution are prominent, the ecological damage is serious, and it is difficult to meet the new environmental protection regulations; 2. Without pre-enrichment at the crushing to stone stage, a large amount of waste rock enters subsequent processes, resulting in high energy and chemical consumption and serious resource waste; 3. The feed particle size of the ball mill is too large (6-30mm), which is much larger than the ideal particle size (about 0.5-5mm). It does not fully comply with the principle of "more crushing and less grinding, more screening and less grinding", resulting in low efficiency. 4. Spiral classifiers are prone to causing excessive grinding of qualified fine particles, resulting in energy waste and deterioration of separation indicators; 5. Flotation relies on chemical reagents, which is costly, poses significant environmental risks, results in low comprehensive utilization of tailings, and greatly increases the pressure on tailings dam construction and operation. Summary of the Invention

[0003] This invention aims to systematically solve the various problems mentioned above, and proposes a mineral processing technology that is energy-saving, consumption-reducing, and environmentally friendly throughout the entire process, which includes source pre-enrichment, precise classification, and the use of reagent-free gravity separation as the main method and flotation as a supplement.

[0004] To solve the above problems, the technical solution adopted by the present invention is as follows: A novel energy-saving and environmentally friendly mineral processing technology is characterized by the following steps: Step 1: Crushing and Electrostatic Separation Pre-enrichment The raw ore is crushed to a particle size of 1–3 cm and pre-enriched by an electrostatic separator to concentrate valuable minerals. Step 2: Roller shaping and jigging re-enrichment The pre-enriched concentrate is processed by a roller mill to a feed particle size of ≤5mm; then it is further enriched by a jig, increasing the grade by 1–3 times, and the heavy minerals are fed into the mill.

[0005] Step 3: Grinding and Precision Classification The ore discharged from the ball mill is fed into a wet high-frequency vibrating flat screen, where qualified fine particles are separated in time, and unqualified coarse particles are returned to the ball mill to prevent over-grinding.

[0006] Step 4: Combined separation with gravity separation as the primary method and flotation as a secondary method. The graded and qualified slurry is fed into a box-type linear suspension vibrating concentrator for primary selection. The middlings are then fed into a 6S shaking table for fine selection. Water is used as the medium in both the primary and fine selection processes. Planar shear force is used to separate light and heavy minerals to obtain high-grade mineral concentrate. For the section where fine-grained light minerals are lost, flotation equipment is used to recover them, and the final concentrate and tailings are obtained.

[0007] Furthermore, in step one, the waste rock that is pre-enriched by the electrostatic separation device and then discarded is used as building material; Furthermore, in step two, the gangue waste removed by jigging and re-enrichment is used as manufactured sand and gravel.

[0008] Furthermore, in step four, the box-type linear suspension vibratory mineral separator uses a container as a carrier. A raw material barrel is installed on the top of the container, and a high-frequency vibrating host and a bed frame are suspended inside the container. The bed frame has multiple layers and is equipped with a corresponding number of trough-type bed plates according to the number of layers. The feed end of the trough-type bed plate is equipped with a feed equalizer connected to the raw material barrel, and the discharge end is equipped with a cutter for cutting and diverting the slurry. One end of the cutter is adapted to the discharge end of the trough-type bed plate to form a mineral concentrate discharge channel, and the other end of the feeder is adapted to the inclined plate installed on the bed frame to form a tailings discharge channel.

[0009] Furthermore, the trough-type bed plate has a box-trough structure, with its discharge end laid flat and its tail having a lower step guide plate, which is lower than and parallel to the surface of the discharge end.

[0010] Furthermore, the material cutter has a T-shaped flow cutter, which is composed of a top panel and a bottom rib perpendicular to the panel. One end of the panel overlaps the lower step flow guide plate of the trough bed plate and leaves a certain flow guide gap with it. The other end of the panel overlaps the material feeding inclined plate. The cutter also includes an angle iron beam and an adjusting screw. The angle iron beam is fixed on the bed frame, and the adjusting screw is used to adjust the height of the T-shaped cut-off plate. Its upper end is connected to the angle iron beam, and its lower end is fixed to the panel of the T-shaped cut-off plate.

[0011] Furthermore, the bed frame is suspended in an adjustable manner on the crossbeam at the top of the container by two sets of suspension components, one in front and one behind. The two sets of suspension components have the same structure, each including a lifting rod, a pulley, and a fixed angle iron. The upper end of the lifting rod is connected to the crossbeam, and the lower end is connected to the pulley installed on the fixed angle iron. The fixed angle iron is fixed to one side of the bed frame. The suspension method of the high-frequency vibration host is the same as that of the bed frame, including a fixed angle iron fixed to the outside of the high-frequency vibration host box, a pulley installed on the fixed angle iron, and a lifting rod with the upper end connected to the crossbeam and the lower end connected to the pulley.

[0012] Furthermore, the raw material barrel is connected to the feed equalizer via a feed branch pipe. The feed equalizer has a feed hole at the top to connect to the feed branch pipe and a discharge hole at the bottom for distributing material onto the surface of the trough-type bed board.

[0013] Furthermore, the high-frequency vibration host and the bed frame are connected by a connector suspended inside the container. The connector is equipped with pulleys, and the crossbeam at the top of the container is connected to the pulleys on the connector via a lifting cable.

[0014] Furthermore, a mineral concentrate feeding hopper with a material feeding slope of <15° is arranged below the bed surface of the trough-type bed plate. The upstream inlet of the mineral concentrate feeding hopper is located at the mineral concentrate feeding channel at the front end of the cutter, and the downstream outlet is connected to the mineral concentrate feeding pipe.

[0015] Furthermore, the container is also equipped with a tailings hopper inside, which is located on the discharge side of the bed frame where a material-carrying inclined plate is installed, and is used to connect with the tailings discharge channel. The installation angle of the inclined plate on the bed frame shall not be less than 15°.

[0016] This invention presents a novel energy-saving and environmentally friendly mineral processing technology. During the grinding process, a wet high-frequency vibrating plane screen replaces the spiral classifier, eliminating over-grinding, reducing grinding load and over-grinding, and improving ball mill efficiency and output. Two-stage enrichment is achieved during the crushing stage through electrostatic pre-enrichment and jigging re-enrichment, significantly improving the feed grade. The box-type linear suspension concentrator employs a multi-layer bed frame suspension structure, allowing for on-demand adjustment of the bed slope according to different ore types and particle sizes. The designed cutter structure enables adjustable height and gap for cutting and stratification, and changes the traditional planar segmented cutting to upper and lower layered cutting, significantly improving mineral processing output and efficiency. The overall recovery rate of the entire mineral processing process is 60%–95%, with power savings of ≥40-60%. It primarily uses reagent-free gravity separation, supplemented by flotation for fine particles, reducing the use of flotation reagents, controlling pollution at the source, and reducing reagent costs by 60-90%. Waste rock / gangue generated during the mineral processing process is recycled, improving resource utilization and reducing tailings discharge and treatment costs. Attached Figure Description

[0017] Figure 1 Example 1: A flow chart of a novel energy-saving and environmentally friendly mineral processing technology; Figure 2 : Front view of the box-type linear suspension vibrating mineral processing device in Example 1; Figure 3 : Figure 2 First angle side view; Figure 4 : Figure 2 The second-angle side view; Figure 5 : Figure 2 Top view. Detailed Implementation

[0018] The invention will now be described in detail with reference to the accompanying drawings.

[0019] Example 1 This embodiment relates to a novel energy-saving and environmentally friendly mineral processing technology for processing sulfide ore with an average grade of 0.3 g / t from a gold mine. The process includes the following steps: Step 1: Crushing and Electrostatic Separation Pre-enrichment The raw ore enters the jaw crusher through the raw ore feed hopper and vibrating feeder. After primary crushing by the jaw crusher, it enters the jaw crusher or cone crusher for secondary crushing, and then is sent to a multi-layer flat screen for screening. Mineral particles larger than 30mm are fed back into a jaw crusher or cone crusher for secondary crushing; mineral particles smaller than 1mm are directly fed into a flat vibrating screen. Ore particles with a diameter of 1-30mm are fed into X-ray electrostatic separation equipment for pre-enrichment by electrostatic separation to enrich valuable minerals; waste rock is removed by conveyor belt and can be sold as aggregate, with a waste removal rate of about 30-80%.

[0020] Step 2: Roller shaping and jigging re-enrichment After pre-enrichment, the middlings are crushed by a roller mill, and then fine ore with a particle size of ≤5mm is screened out by a high-frequency vibrating screen and sent to a jig for secondary enrichment, which increases the gold grade by 10 times. Coarse / fine gangue is removed and used as manufactured sand, while heavy minerals are sent to a ball mill.

[0021] Step 3: Grinding and Precision Classification After being ground again in a ball mill, the heavy minerals are fed into a wet high-frequency vibrating flat screen for classification. Unqualified coarse particles are returned to the ball mill; qualified fine particles (20-200 mesh) enter the desliming hopper, and the deslimed slurry enters the fine slurry tank. The slurry is then pumped to the mineral processing machine via a slurry pump.

[0022] Step 4: Combined separation with gravity separation as the primary method and flotation as a secondary method. The qualified slurry enters the box-type linear suspension concentrator for primary selection. The middlings are then fed into the 6S shaking table for fine selection to obtain high-grade mineral concentrate. The tailings generated by the 6S shaking table are returned to the box-type linear suspension concentrator for further selection, with a gold recovery rate of 88%. The fine particles lost are supplemented by flotation recovery, with a total recovery rate of 94%.

[0023] Compared with the original process, the mineral processing technology in this embodiment saves 55% of electricity, reduces reagent costs by 90%, reduces tailings by 70%, reduces the comprehensive production cost per ton of ore by 80%, and increases overall economic benefits by 160%.

[0024] Example 2 This embodiment relates to a novel energy-saving and environmentally friendly mineral processing technology for processing a copper sulfide ore with a grade of 0.5%. The process includes the following steps: Step 1: Crushing and Electrostatic Separation Pre-enrichment The raw ore enters the jaw crusher through the raw ore feed hopper and vibrating feeder. After primary crushing by the jaw crusher, it enters the jaw crusher or cone crusher for secondary crushing, and then is sent to a multi-layer flat screen for screening. Mineral particles larger than 30mm are fed back into a jaw crusher or cone crusher for secondary crushing; mineral particles smaller than 1mm are directly fed into a flat vibrating screen. Ore particles with a diameter of 1-30mm are fed into X-ray photoelectric separators for pre-enrichment by electrostatic separation to enrich valuable minerals; waste rock is removed by conveyor belt and can be sold as aggregate, with a waste removal rate of about 35-75%.

[0025] Step 2: Roller shaping and jigging re-enrichment After pre-enrichment, the middlings are crushed by a roller mill, and then fine ore with a particle size of ≤5mm is screened out by a high-frequency vibrating screen and sent to a jig for secondary enrichment, which increases the copper grade by 8 times. Coarse / fine gangue is removed and used as manufactured sand, while heavy minerals are sent to a ball mill.

[0026] Step 3: Grinding and Precision Classification After being ground again in a ball mill, the heavy minerals are fed into a wet high-frequency vibrating flat screen for classification. Unqualified coarse particles are returned to the ball mill; qualified fine particles enter the desliming hopper, and the deslimed fine mud slurry enters the fine mud water tank. The slurry is then pumped to the mineral processing machine by a slurry pump.

[0027] Step 4: Combined separation with gravity separation as the primary method and flotation as a secondary method. The graded slurry enters the box-type linear suspension concentrator for primary selection. The middlings then enter the 6S shaking table for fine selection to obtain high-grade mineral concentrate. The tailings generated by the 6S shaking table are returned to the box-type linear suspension concentrator for further selection. Fine particles are supplemented by flotation, resulting in a copper recovery rate of 92%, minimal reagent pollution, and a 110% increase in tailings resource utilization rate. The box-type linear suspension vibratory mineral processing machine used in the above embodiments includes a container 1 as a carrier, a raw material barrel 15 disposed on the top of the container 1, and a high-frequency vibration host 5 and a bed frame 7 installed inside the container 1 in an adjustable suspension manner; the high-frequency vibration host 5 and the bed frame 7 are connected by a connector 6 that is also suspended inside the container 1.

[0028] The bed frame 7 is a multi-layer bed frame. In this embodiment, the bed frame 7 is configured with 4 layers, and each layer of the bed frame is configured with a grooved bed board 8. The end of the grooved bed board 8 near the connector 6 and the raw material barrel 15 is configured as the feeding end, and a feeder 17 for communicating with the raw material barrel 15 is configured at the feeding end. The feeder 7 has a feeding hole at the top and is connected to the raw material barrel 15 on the top of the container 1 through the feeding hole and the feeding branch pipe 16. The feeder 7 has a discharge hole at the bottom for distributing material onto the bed surface of the grooved bed board 8. The trough-type bed plate 8 has a discharge end and a cutter 9 is configured at the discharge end. One end of the cutter 9 is adapted to the discharge end of the trough-type bed plate 8 to form a mineral concentrate discharge channel, and the other end of the cutter 9 is adapted to the inclined plate 13 installed on the bed frame 7 to form a tailings discharge channel. A mineral concentrate hopper 11 connected to the mineral concentrate discharge channel is configured below the bed surface of the trough-type bed plate 8. The discharge end of each layer of mineral concentrate hopper 11 is connected to the mineral concentrate discharge pipe 12 to facilitate the collection and discharge of heavy minerals. A tailings hopper 14 connected to the tailings discharge channel is provided inside the container 1 to facilitate the discharge of light minerals.

[0029] The container 1 is a 20-foot ultra-high standard shipping container; the high-frequency vibration host 5 is a multi-layer mineral processing shaking table head (equipped with a frequency converter) produced by Jiangxi Tongyuan Mineral Processing Equipment Manufacturing Co., Ltd., with a stroke of 10-35mm, a stroke rate of 240-360 times / minute, and a motor power of 2.2-3.5kw.

[0030] The high-frequency vibration host 5, bed frame 7, and connecting frame 6 are all suspended from the top of container 1. Multiple crossbeams 2 are installed on the top of the container 1. The high-frequency vibration host 5 is suspended below one of the crossbeams 2 at one end of container 1 via a lifting rod 3 and pulleys 4. A hook screw is vertically fixed to the lower end of the crossbeam 2. The lifting rod 3 is looped at both ends and clamped with cable clamps; its upper end hangs vertically on the hook screw, and its lower end is fitted onto the pulley 4. The pulley 4 is fixed to the outside of the high-frequency vibration host 5's casing. The suspension structure of the bed frame 7 includes the lifting rod 3, pulleys 4, and fixed angle iron 10. The fixed angle iron 10 is fixed to the side of the bed frame 7, and the pulley 4 is fixed to the side of the fixed angle iron 10. The upper end of the lifting rod 3 is connected to the crossbeam 2 via the hook screw, and its lower end is fitted onto the pulley 4. The suspension structure of the connector 6 is the same as that of the bed frame 7, including a lifting rod 3, a pulley 4 and a fixed angle iron 10. There is a pulley 4 on each side of the middle part of the connector 6. The lifting rod 3 is sleeved on the pulley 4 and hangs vertically upward on the hook screw. The upper end of the hook screw is vertically fixed to the lower end of the crossbeam 2.

[0031] The raw material barrel 15 is provided with 4 discharge ports to connect to the feed branch pipe 16. The upper end of the feed branch pipe 16 is connected to the discharge port of the raw material barrel 15, and the lower end is connected to the feed equalizer 17 at the feed end of the trough bed plate 8.

[0032] In this embodiment, the number of grooved bed boards 8 is 4 layers, which matches the number of layers of the bed frame 7. They are laid horizontally on the bed frame 7. The three sides of the grooved bed board 8 are folded up to form a deep groove, leaving one short side to be laid flat as the discharge end. A flat iron is welded parallel to the bottom surface of the discharge end side and the end edge, which is one bed board thickness lower than the bed surface. The flat iron serves as the lower step guide plate 81 to be adapted to the material cutter 9.

[0033] The inclined plate 13 is welded to the side of the bed frame 7 near the discharge end of the trough bed plate 8 and the installation angle shall not be less than 15°. One end is used to match the cutter 9 to form a tailings discharge channel, and the other end is placed inside the tailings hopper 14.

[0034] In this embodiment, the feed cutter 9 is configured at the discharge end of the trough bed plate 8 and parallel to its bed surface. Its structure includes a T-shaped flow cutter 91, an adjusting screw 92, and an angle iron beam 93. One end of the top panel of the T-shaped flow cutter 91 overlaps the lower step guide plate 81 of the trough bed plate 8, leaving a certain guiding gap, while the other end overlaps the inclined material feeding plate 13. Its bottom ribs guide and obstruct the flow of mineral concentrate entering the mineral concentrate discharge channel, facilitating better entry of the mineral concentrate into the lower mineral concentrate discharge hopper 11. The lower end of the adjusting screw 92 is vertically welded to the panel of the T-shaped flow cutter 91, and the upper end is connected to the angle iron beam 93. The angle iron beam 93 has 5-10 φ8-16mm connecting holes on its plane for installing the adjusting screw 92. Both ends of its side are fixed with screws to the C-shaped steel at the discharge end of the bed frame 7, and are parallel to the bed surface.

[0035] The feeder 17 is horizontally installed above the bed surface of the trough bed board 8 and has a predetermined gap with the bed surface. The top of the feeder 17 has a feed hole to connect to the feed branch pipe 16, and the bottom of the feeder 17 has an average of 8-12 discharge holes to distribute the material onto the bed surface of the trough bed board 8.

[0036] In this embodiment, the slope of the feed hopper 11 shall not be less than 15°, and the downstream outlet is connected to the feed pipe 12. The feed pipe 12 is made of PE plastic pipe or iron pipe.

[0037] In this embodiment, the tailings hopper 14 is fixed at the center of the other end of the container 1, and surrounds the bed frame 7 and the material feeding ramp 13 in the air.

[0038] Compared with traditional mineral processing techniques, the advantages of this invention are as follows: 1. High-efficiency utilization of resources: Two-stage pre-enrichment by electrostatic separation and jigging significantly improves the grade of the feed material, realizes gangue resource utilization, and maximizes the comprehensive utilization rate; 2. Significantly improved energy efficiency: With feed size ≤5mm and optimized grading, the ball mill's efficiency is improved, over-grinding is eliminated, and electricity is saved by ≥50%; 3. Green and environmentally friendly: Based on chemical-free gravity separation, the amount of chemicals used is greatly reduced, eliminating pollution at the source; 4. Stable and excellent performance indicators: grinding is sufficient until monomers are dissociated, with a recovery rate of 60%–95%, simple operation, and minimal human interference; 5. Win-win for both economy and ecology: Increased revenue from the sale of waste rock / gangue, reduced tailings volume, and significantly lower costs for tailings ponds and environmental remediation.

[0039] This invention is not limited to the embodiments discussed above. The above description of specific embodiments is intended to describe and illustrate the technical solutions involved in this invention. Obvious modifications, substitutions, or combinations based on the teachings of this invention should also be considered to fall within the protection scope of this invention. The above specific embodiments are used to disclose the best implementation methods of this invention, so that those skilled in the art can apply various embodiments and alternatives of this invention to achieve the objectives of this invention.

Claims

1. A novel energy-saving and environmentally friendly mineral processing technology, characterized in that, Includes the following steps: Step 1: Crushing and Electrostatic Separation Pre-enrichment The raw ore is crushed to a particle size of 1–3 cm and pre-enriched by an electrostatic separator to concentrate valuable minerals. Step 2: Roller shaping and jigging re-enrichment The pre-enriched concentrate is processed by a roller mill to a feed particle size of ≤5mm; then it is further enriched by a jig, increasing the grade by 1–3 times, and the heavy minerals are fed into the mill. Step 3: Grinding and Precision Classification The ore discharged from the ball mill is fed into a wet high-frequency vibrating flat screen, where qualified fine particles are separated in time, and unqualified coarse particles are returned to the ball mill to prevent over-grinding. Step 4: Combined separation with gravity separation as the primary method and flotation as a secondary method. The graded and qualified slurry is fed into a box-type linear suspension vibrating concentrator for primary selection. The middlings are then fed into a 6S shaking table for fine selection. Both the primary and fine selection processes use water as a medium and utilize planar shear force to separate light and heavy minerals, resulting in high-grade mineral concentrate. For the section where fine-grained light minerals are lost, flotation equipment is used to recover them, and the final concentrate and tailings are obtained.

2. The novel energy-saving and environmentally friendly mineral processing technology as described in claim 1, characterized in that, In step one, the waste rock that is pre-enriched by the electrostatic separation device and then discarded is used as building material. In step two, the gangue waste removed by jigging and re-enrichment is used as manufactured sand and gravel.

3. The novel energy-saving and environmentally friendly mineral processing technology as described in claim 1, characterized in that, In step four, the box-type linear suspension vibratory mineral processing machine uses a container as a carrier, including a raw material barrel mounted on the top of the container and a high-frequency vibrating host and a bed frame suspended and interconnected inside the container. The bed frame has multiple layers and is equipped with a corresponding number of trough-type bed plates according to the number of layers. The feed end of the trough-type bed plate is equipped with a feed equalizer connected to the raw material barrel, and the discharge end is equipped with a cutter for cutting and diverting the slurry. One end of the cutter is adapted to the discharge end of the trough-type bed plate to form a mineral concentrate discharge channel, and the other end of the feeder is adapted to the inclined plate installed on the bed frame to form a tailings discharge channel.

4. The novel energy-saving and environmentally friendly mineral processing technology as described in claim 3, characterized in that, The trough-type bed board has a box-trough structure, with its discharge end laid flat and its tail end having a lower step guide plate. The lower step guide plate is lower than the surface of the discharge end and parallel to it.

5. The novel energy-saving and environmentally friendly mineral processing technology as described in claim 3, characterized in that, The material cutter has a T-shaped flow cutter, which is composed of a top panel and a bottom rib perpendicular to the panel. One end of the panel overlaps the lower step flow guide plate of the trough bed plate and leaves a certain flow guide gap with it. The other end of the panel overlaps the material feeding inclined plate. The cutter also includes an angle iron beam and an adjusting screw. The angle iron beam is fixed on the bed frame, and the adjusting screw is used to adjust the height of the T-shaped cut-off plate. Its upper end is connected to the angle iron beam, and its lower end is fixed to the panel of the T-shaped cut-off plate.

6. The novel energy-saving and environmentally friendly mineral processing technology as described in claim 3, characterized in that, The bed frame is suspended in an adjustable manner from the crossbeam on the top of the container by two sets of suspension components, one in front and one behind. The two sets of suspension components have the same structure, each including a lifting rod, a pulley, and a fixed angle iron. The upper end of the lifting rod is connected to the crossbeam, and the lower end is connected to the pulley installed on the fixed angle iron. The fixed angle iron is fixed to one side of the bed frame. The suspension method of the high-frequency vibration host is the same as that of the bed frame, including a fixed angle iron fixed to the outside of the high-frequency vibration host housing, a pulley installed on the fixed angle iron, and a lifting rod with the upper end connected to the crossbeam and the lower end connected to the pulley.

7. The novel energy-saving and environmentally friendly mineral processing technology as described in claim 3, characterized in that, The raw material barrel is connected to the feed equalizer via a feed branch pipe. The feed equalizer has a feed hole at the top to connect to the feed branch pipe and a discharge hole at the bottom for distributing material onto the surface of the trough-type bed board.

8. The novel energy-saving and environmentally friendly mineral processing technology as described in claim 3, characterized in that, The high-frequency vibration host and the bed frame are connected by a connector suspended inside the container. The connector is equipped with pulleys, and the crossbeam at the top of the container is connected to the pulleys on the connector via a lifting cable.

9. A novel energy-saving and environmentally friendly mineral processing technology as described in claim 3, characterized in that, The trough-type bed plate is equipped with a mineral concentrate feeding hopper with a material feeding slope of <15° below the bed surface. The upstream inlet of the mineral concentrate feeding hopper is located at the mineral concentrate feeding channel at the front end of the cutter, and the downstream outlet is connected to the mineral concentrate feeding pipe.

10. A novel energy-saving and environmentally friendly mineral processing technology as described in claim 3, characterized in that, The container is also equipped with a tailings hopper on the inside. The tailings hopper is located on the discharge side of the bed frame where a material-carrying inclined plate is installed, and is connected to the tailings discharge channel. The installation angle of the inclined plate on the bed frame shall not be less than 15°.

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