Deep-sea mining ore separation and sediment treatment system

Abstract

The invention discloses an ore separation and sediment treatment system for deep-sea mining. Belongs to the field of deep-sea mining and mainly comprises a sediment collecting and processing system, an ore screening system, a mine car carriage, a collecting head, a mine car track, a lifting hose, a draft tube connecting hard tube, a draft tube, a draft tube connecting hose and the like. According to the invention, through a set of sediment collection and treatment system, sediments discharged in all links of deep-sea mining are effectively collected, and a set of effective circulation system is formed; and meanwhile, the collected sediment-seawater mixture is matched with the filtering layer through the continuously contracted flow channel of the screw compressor, so that the concentration of sediment slurry is increased, the density of the sediment slurry is increased, the sediment slurry is quickly settled, and the problem that the sediment is diffused to form large plume flow to pollute the seabed environment is solved.

Description

Technical Field

[0001] The invention belongs to the field of deep sea mining and relates to a deep sea mining ore separation and sediment processing system. Background Art

[0002] The exploitation of deep-sea mineral resources can effectively solve the problem of resource scarcity on land and meet the needs of social and economic development. However, deep-sea mineral resources are widely distributed on the seabed. Rash commercial exploitation will inevitably have a huge impact on the marine ecological environment and even an irreversible destructive blow. The impact of deep-sea mining on the environment mainly includes noise, light and plumes in the mining process. Among them, the deep-sea mining plume includes the plume caused by the disturbance of seabed sediments by mining vehicles and the plume generated by the discharge of tailings from surface support ships. It will spread beyond the mining area and stretch for several kilometers to tens of kilometers or even farther. It is the most important pollution factor in the deep-sea mining process. Therefore, it is very important to inhibit the diffusion of deep-sea mining plumes. Therefore, the present invention proposes a deep-sea mining ore separation and sediment treatment system to separate ore and sediment, and effectively capture and treat the diffused sediment plume to solve the deep-sea mining plume pollution problem. Summary of the invention

[0003] In view of the above problems, the present invention aims to propose a deep-sea mining ore separation and sediment processing system.

[0004] The technical solution of the present invention is: a deep-sea mining ore separation and sediment processing system of the present invention comprises a mine car compartment, in which a sediment collection and processing system and an ore screening system are arranged;

[0005] A collection head is connected to one end of the mine car compartment through a conduit;

[0006] A mine car crawler is arranged at the bottom end of the mine car compartment, and a lifting hose is also arranged at the upper end of the mine car compartment.

[0007] Furthermore, the mine car carriage, the mining head and the mine car tracks are mechanically connected.

[0008] Furthermore, the ore screening system comprises a conveying grouser track, a conveying motor, a transmission wheel set and an ore storage cabin;

[0009] The transmission motor is placed on the transmission wheel set, and the transmission grouser track is coated on the outside of the transmission wheel set;

[0010] One end of the conveying grouser track is arranged below the interface between the collecting head and the ore car compartment, and the other end is arranged at the opening of the ore storage cabin;

[0011] The ore storage cabin is fixedly arranged in the carriage of the mine car, and the top of the ore storage cabin is connected with the lifting hose.

[0012] Furthermore, a tailwater pipe connecting hard pipe is installed on the mine car compartment, one end of the tailwater pipe connecting hard pipe is connected to the sediment collection and treatment system, and the other end is connected to the tailwater pipe through a tailwater pipe connecting hose;

[0013] The tailwater pipe connecting hard pipe, the tailwater pipe and the tailwater pipe connecting hose together constitute a mine tailwater recovery and treatment device.

[0014] Further, the sediment collection and treatment system includes a collection box, an electric pump, a first collection head, a second collection head and a screw compressor;

[0015] A first collection port with a trumpet-shaped opening is arranged at the front end of the collection box, and second collection ports with inverted eight-shaped openings are distributed around the collection box. The collection box, the first collection port and the second collection port are fixedly arranged in the mine car compartment, and the tail of the collection box is connected to an electric pump through a pipeline.

[0016] Furthermore, holes are opened at the bottom of the first collection port and the second collection port, and the first collection port and the second collection port are in an outwardly expanded opening shape.

[0017] Furthermore, the first and second collective capture heads are in an outwardly expanding opening shape and are connected to both ends through arranged pipes;

[0018] The first collection head is placed at the rear side of the collection head.

[0019] The second collecting heads are respectively arranged on the rear sides of the mine car crawler and the screw compressor;

[0020] The other end of the electric pump is connected to the screw compressor;

[0021] The tail of the screw compressor is arranged at the bottom of the mine car compartment and between the two mine car tracks.

[0022] Furthermore, the screw compressor includes a drainage outer wall, a sediment filter membrane layer, a primary filter inner wall, a screw compression blade, a rotating motor, a cleaning flushing head, a flocculant nozzle, a water suction pump, a flocculant silo and a mixture feed silo;

[0023] The drainage outer wall, sediment filter membrane layer and primary filter inner wall together constitute the filter layer of the screw compressor;

[0024] The spiral compression blade is arranged at the center of the spiral compressor and is nested inside the inner wall of the primary filter. A rotating motor is arranged at one end of the spiral compression blade.

[0025] A water suction pump, a flocculant silo and a mixture feed silo are arranged below the rotating motor and in the space above the drainage outer wall, the sediment filter membrane layer and the primary filter inner wall;

[0026] Wherein, the water suction pump is connected to a cleaning flushing head, and the cleaning flushing head is fixedly arranged on the top of the sediment filter membrane layer and the inner wall of the primary filter;

[0027] The flocculant silo is connected to the flocculant nozzle, and the flocculant nozzle is fixedly arranged on the top plate of the inner space of the primary filter inner wall.

[0028] One end of the mixture feed port is connected to the working space of the spiral compression blades inside the spiral compressor, and the other end is connected to the pipeline of the electric pump.

[0029] Furthermore, the drainage outer wall is composed of a funnel-shaped outer lining group with fine holes arranged on a high-strength anti-corrosion surface, which is the outer support skeleton of the screw compressor;

[0030] The sediment filter membrane layer is composed of a permeable membrane with a pore size less than 1 micron;

[0031] The inner wall of the primary filter is composed of a funnel-shaped lining layer with fine holes arranged on the high-strength anti-corrosion surface, and gradually shrinks in a funnel shape.

[0032] Furthermore, the surface of the conveying grouser track has a hollow structure, and the track has a hook structure.

[0033] The principle of the present invention is:

[0034] 1. Based on the principle that the greater the concentration of sediment turbid liquid, the greater the density, the faster the sedimentation, the present invention collects and dehydrates the sediment-seawater mixture to obtain a sediment slurry with a low moisture content and high concentration, so as to quickly settle and avoid spreading into a plume flow to pollute the seabed environment;

[0035] 2. The present invention is based on the negative pressure principle. Negative pressure is generated by an electric pump, and a collector with an external expansion port is used to capture the sediments disturbed and floated during deep-sea mining through negative pressure.

[0036] The beneficial effects of the present invention are as follows: 1. The present invention effectively collects and captures sediments discharged from various links of deep-sea mining through a sediment collection and treatment system, and forms an effective circulation system, thereby avoiding the problem of large-scale escape of sediments after being disturbed to form large plumes and pollute the seabed environment; 2. The present invention increases the concentration of the sediment slurry by passing the collected sediment-seawater mixture through the continuously shrinking flow channel of the screw compressor in conjunction with the filter layer, thereby increasing its density and causing it to settle quickly, thereby avoiding the problem of sediment diffusion to form large plumes and pollute the seabed environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Figure 1 It is a schematic diagram of the overall composition of the system of the present invention;

[0038] Figure 2It is a schematic diagram of the structure of the sediment collection and treatment system of the present invention;

[0039] Figure 3 It is a schematic diagram of the structure of the spiral compressor of the present invention;

[0040] In the figure: 1 is a sediment collection and treatment system, 10 is a collection box, 11 is a first collection port, 12 is a second collection port, 13 is a tailwater pipe connector, 14 is an electric pump, 15 is a first collection head, 16 is a second collection head, 17 is a screw compressor, 170 is a drainage outer wall, 171 is a sediment filter membrane layer, 172 is a primary filter inner wall, 173 is a spiral compression blade, 174 is a rotating motor, 175 is a cleaning flushing head, 176 is a flocculant nozzle, 177 is a water suction pump, 178 is a flocculant silo, and 179 is a mixture feed silo;

[0041] 2 is an ore screening system, 21 is a conveying grouser track, 22 is a conveying motor, 23 is a transmission wheel set, and 24 is an ore storage cabin;

[0042] 3 is the mine car carriage, 4 is the collection head, 5 is the mine car track, 6 is the lifting hose, 7 is the tailwater pipe connecting hard pipe, 8 is the tailwater pipe, and 9 is the tailwater pipe connecting hose. DETAILED DESCRIPTION

[0043] The specific technical scheme of the present invention is further described in detail below with reference to specific examples.

[0044] As shown in the figure, a deep-sea mining ore separation and sediment treatment system according to the present invention is mainly composed of a sediment collection and treatment system 1, an ore screening system 2, a mine car compartment 3, a collection head 4, a mine car track 5, a lifting hose 6, a tailwater pipe connecting hard pipe 7, a tailwater pipe 8 and a tailwater pipe connecting hose 9;

[0045] The sediment collection and treatment system 1 is mainly used to absorb sediment plumes generated in various stages of deep-sea mining, and further compress and treat them before discharging them, so as to avoid long-distance diffusion of low-concentration plumes and environmental pollution.

[0046] The ore screening system 2 is mainly composed of a conveying grouser track 21, a conveying motor 22, and a transmission wheel set 23. The conveying grouser track 21 has a hollow structure on the surface and a hook structure on the track. On the one hand, the hollow structure is convenient for drying fine-grained sediments during the transportation of ore and mixture, and on the other hand, the hook on the track is convenient for ore transportation and prevents slipping.

[0047] The transmission motor 22 is installed on the transmission wheel group 23, and the transmission wheel group 23 is covered with the transmission grouser track 21, so that the transmission motor 22 drives the transmission wheel group 23, and further drives the transmission grouser track 21 to move, so as to transport the ore; one end of the transmission grouser track 21 is located below the interface between the collection head 4 and the mine car compartment 3 to receive the falling ore-sediment-seawater mixture, and the other end is located at the opening of the ore storage cabin 24; the ore storage cabin 24 is fixedly installed in the mine car compartment 3, and the upper part thereof is connected with the lifting hose 6 to transport the preliminarily separated ore;

[0048] The mining car carriage 3, the collection head 4 and the mining car crawler 5 are mechanically connected and respectively undertake the tasks of loading, collecting and walking during the deep-sea mining process to ensure the orderly progress of the deep-sea mining activities;

[0049] The lifting hose 6 is used to connect the ore storage compartment 24 and the relay station of the mining system to transport ore.

[0050] The tailwater pipe connecting hard pipe 7, tailwater pipe 8 and tailwater pipe connecting hose 9 together constitute a mine tail water recovery and treatment device, wherein the tailwater pipe connecting hard pipe 7 is connected to the sediment collection and treatment system 1, and the tailwater pipe connecting hose 9 is used to connect the tailwater pipe 8 and the tailwater pipe connecting hard pipe 7, connecting the tailwater discharge tailwater pipe 8 with the sediment collection and treatment system 1 of the mine car, avoiding extensive discharge of tail water and reducing environmental pollution.

[0051] The sediment collection and treatment system 1 mainly includes a collection box 10, a first collection port 11, a second collection port 12, a tailwater pipe connector 13, an electric pump 14, a first collection head 15, a second collection head 16 and a screw compressor 17, etc.;

[0052] The collection box 10, the first collection port 11, the second collection port 12, and the electric pump 14 are fixedly installed in the mining vehicle;

[0053] A first collection port 11 with a trumpet-shaped opening is installed at the front end of the collection box 10, and second collection ports 12 with inverted eight-shaped openings are installed around the body. The first collection port 11 and the second collection port 12 have openings at the bottom, and the outward expansion opening shape of the first collection port 11 and the second collection port 12 makes the absorption efficiency of the sediment-water mixture separated in the mine car higher;

[0054] The tail of the collection box 10 is connected to the electric pump 14 through a pipeline. When the electric pump 14 works, negative pressure is generated inside the collection box 10, and the sediment-water mixture separated from the mine car is absorbed through the first collection port 11 and the second collection port 12.

[0055] The first collecting head 15 and the second collecting head 16 absorb the sediment caused by the disturbance of the collecting head 4 and the mine car crawler 5 and part of the sediment plume that escapes when the screw compressor 17 discharges the treated sediment;

[0056] The first collection head 15 and the second collection head 16 have an outward-expanding opening shape and are connected to the collection box 10 through a pipeline. The outward-expanding opening shape is used to improve the efficiency and range of collection. The first collection head 15 is installed on the rear side of the collection head 4 to absorb the sediment plume caused by the disturbance of the collection head 4. The second collection head 16 is installed on the rear side of the mine car track 5 and the screw compressor 17 respectively to absorb part of the sediment plume that escapes when the mine car track 5 and the screw compressor 17 discharge the treated sediment; the other end of the electric pump 14 is connected to the screw compressor 17 to pump the sediment-water mixture collected by the collection box 10 to the screw compressor 17 for further treatment and discharge; the tail of the screw compressor 17 is arranged between the bottom of the mine car carriage 3 and the two mine car tracks 5 to suppress the diffusion of the sediment plume through the shielding structure formed by the mine car carriage 3 and the two mine car tracks 5.

[0057] The screw compressor 17 is mainly composed of a drainage outer wall 170, a sediment filter membrane layer 171, a primary filter inner wall 172, a screw compression blade 173, a rotating motor 174, a cleaning flushing head 175, a flocculant nozzle 176, a water suction pump 177, a flocculant silo 178, and a mixture feed silo 179;

[0058] The drainage outer wall 170, the sediment filter membrane layer 171, and the primary filter inner wall 172 together constitute the filter layer of the screw compressor 17;

[0059] The primary filter inner wall 172 is composed of a funnel-shaped inner lining layer with fine holes arranged on a high-strength anti-corrosion surface. On the one hand, it provides a compression chamber for the spiral compression blades 173, and on the other hand, it preliminarily separates sediment and seawater through the surface holes;

[0060] The sediment filter layer 171 is composed of a permeable membrane with a pore size of less than 1 micron, and is used to filter water and sediment, so that the sediment cannot be discharged from the outer wall of the screw compressor 17, while the seawater can be discharged through the sediment filter layer 171;

[0061] The drainage outer wall 170 is composed of a funnel-shaped outer lining layer with fine holes arranged on a high-strength anti-corrosion surface, which is the outer support frame of the screw compressor 17 and is convenient for the discharge of the separated seawater filtrate. The bottoms of the drainage outer wall 170 and the sediment filter membrane layer 171 are open to facilitate the discharge of the seawater filtrate, and the bottoms of the sediment filter membrane layer 171 and the primary filter inner wall 172 are sealed to prevent the sediment from escaping.

[0062] The spiral compression blade 173 is located at the center of the spiral compressor 17 and is nested inside the primary filter inner wall 172. The primary filter inner wall 172 is funnel-shaped and gradually shrinks. The spiral compression blade 173 is also funnel-shaped and the spiral blade pitch is gradually reduced. Driven by the rotating motor 174, the flow channel of the sediment-seawater mixture is gradually contracted to squeeze the sediment-seawater mixture, discharge the seawater filtrate, and finally discharge the high-concentration sediment to make it settle quickly to avoid diffusion, which is called plume to pollute the seabed environment;

[0063] A water suction pump 177, a flocculant silo 178, and a mixture feed silo 179 are arranged below the rotating motor 174 and above the drainage outer wall 170, the sediment filter membrane layer 171, and the primary filter inner wall 172. The water suction pump 177 is connected to a cleaning flushing head 175, which is fixedly installed on the top of the sediment filter membrane layer 171 and the primary filter inner wall 172. Seawater is pumped by the water suction pump 177, and a jet is ejected by the cleaning flushing head 175 to clean the screw compressor 17 when the sediment filter membrane layer 171 and the primary filter inner wall 172 are blocked.

[0064] The flocculant silo 178 is connected to the flocculant nozzle 176, and the flocculant nozzle 176 is fixedly installed on the top plate of the internal space of the primary filter inner wall 172. The flocculant silo 178 stores environmentally friendly biological flocculants, and the flocculant is sprayed into the working space of the spiral compression blades 173 inside the spiral compressor 17 through the flocculant nozzle 176, so that the sediment can be flocculated quickly, which is convenient for the compression and dehydration of the sediment-seawater mixture; one end of the mixture feed port 179 is connected to the working space of the spiral compression blades 173 inside the spiral compressor 17, and the other end is connected to the pipeline connected to the electric pump 14, so that the sediment-seawater mixture collected by the collection box 10 can be smoothly transported to the inside of the spiral compressor 17 for compression and dehydration.

Claims

1. A deep sea mining ore separation and sediment processing system, characterized in that: It comprises a mine car compartment (3), in which a sediment collection and processing system (1) and an ore screening system (2) are arranged; A collection head (4) is connected to one end of the mine car compartment (3) via a conduit; A mine car crawler (5) is arranged at the bottom end of the mine car compartment (3), and a lifting hose (6) is also arranged at the upper end of the mine car compartment (3).

2. A deep sea mining ore separation and sediment processing system according to claim 1, characterized in that: The mine car carriage (3), the collection head (4) and the mine car crawler (5) are mechanically connected.

3. A deep sea mining ore separation and sediment processing system according to claim 1, characterized in that: The ore screening system (2) comprises a transmission grouser track (21), a transmission motor (22), a transmission wheel set (23) and an ore storage cabin (24); The transmission motor (22) is placed on a transmission wheel set (23), and a transmission grouser track (21) is coated on the outside of the transmission wheel set (23); One end of the conveying grouser track (21) is arranged below the interface between the collection head (4) and the mining car compartment (3), and the other end is arranged at the opening of the ore storage cabin (24); The ore storage cabin (24) is fixedly arranged in the ore car compartment (3), and the top of the ore storage cabin is connected to the lifting hose (6).

4. A deep sea mining ore separation and sediment processing system according to claim 2, characterized in that: A tailwater pipe connecting hard pipe (7) is also installed on the mine car compartment (3); one end of the tailwater pipe connecting hard pipe (7) is connected to the sediment collection and treatment system (1), and the other end is connected to the tailwater pipe (8) via a tailwater pipe connecting hose (9); The tailwater pipe connecting hard pipe (7), the tailwater pipe (8) and the tailwater pipe connecting hose (9) together form a mine tailwater recovery and treatment device.

5. A deep sea mining ore separation and sediment processing system according to claim 4, characterized in that: The sediment collection and treatment system (1) comprises a collection box (10), an electric pump (14), a first collection head (15), a second collection head (16) and a screw compressor (17); A first collection port (11) with a trumpet-shaped opening is arranged at the front end of the collection box (10), and second collection ports (12) with inverted eight-shaped openings are arranged distributed around the collection box (10). The collection box (10), the first collection port (11) and the second collection port (12) are fixedly arranged in the mine car compartment (3), and the rear end of the collection box (10) is connected to an electric pump (14) through a pipeline.

6. A deep sea mining ore separation and sediment processing system according to claim 5, characterized in that: Holes are opened at the bottom of the first collection port (11) and the second collection port (12), and the first collection port (11) and the second collection port (12) are in an outwardly expanding opening shape.

7. A deep sea mining ore separation and sediment processing system according to claim 5, characterized in that: The first collecting head (15) and the second collecting head (16) are in an outwardly expanding opening shape and are connected to both ends of (10) through arranged pipes; The first collecting head (15) is arranged at the rear side of the collecting head (4). The second collecting head (16) is respectively arranged on the rear side of the mine car crawler (5) and the screw compressor (17); The other end of the electric pump (14) is connected to a screw compressor (17); The tail of the screw compressor (17) is arranged at the bottom of the mine car compartment (3) and between the two mine car tracks (5).

8. A deep sea mining ore separation and sediment processing system according to claim 5, characterized in that: The screw compressor (17) comprises a drainage outer wall (170), a sediment filter membrane layer (171), a primary filter inner wall (172), a screw compression blade (173), a rotating motor (174), a cleaning flushing head (175), a flocculant nozzle (176), a water suction pump (177), a flocculant silo (178) and a mixture feed silo (179); The drainage outer wall (170), the sediment filter membrane layer (171) and the primary filter inner wall (172) together constitute a filter layer of the screw compressor (17); The spiral compression blade (173) is arranged at the center of the spiral compressor (17) and is nested inside the inner wall (172) of the primary filter. A rotating motor (174) is arranged at one end of the spiral compression blade (173). A water suction pump (177), a flocculant silo (178) and a mixture feed silo (179) are arranged below the rotating motor (174) and in the space above the drainage outer wall (170), the sediment filter membrane layer (171) and the primary filter inner wall (172); The water suction pump (177) is connected to a cleaning water flushing head (175), and the cleaning water flushing head (175) is fixedly arranged on the top of the sediment filter membrane layer (171) and the primary filter inner wall (172); The flocculant silo (178) is connected to the flocculant nozzle (176), and the flocculant nozzle (176) is fixedly mounted on the top plate of the inner space of the primary filter inner wall (172). One end of the mixture feed port (179) is connected to the working space of the spiral compression blade (173) inside the spiral compressor (17), and the other end is connected to the pipeline of the electric pump (14).

9. A deep sea mining ore separation and sediment processing system according to claim 8, characterized in that: The drainage outer wall (170) is composed of a funnel-shaped outer lining layer with fine holes arranged on a high-strength anti-corrosion surface, and serves as an outer support frame of the screw compressor (17); The sediment filter membrane layer (171) is composed of a permeable membrane with a pore size less than 1 micron; The primary filter inner wall (172) is composed of a funnel-shaped inner lining layer with fine holes arranged on a high-strength anti-corrosion surface, and gradually shrinks in a funnel shape.

10. A deep sea mining ore separation and sediment processing system according to claim 2, characterized in that: The surface of the transmission grouser track (21) has a hollow structure, and the track has a hook structure.

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