A method and system for flotation of seabed in-situ gold ore

Abstract

The present invention provides a seabed in-situ gold flotation method and system, comprising: collecting the temperature, pressure and flow rate of seabed hydrothermal vents, and obtaining the corresponding plume by suction according to the plume direction of the seabed hydrothermal vents, and inputting the metal-rich hydrothermal plume into a flotation bucket; pre-constructing a multi-layer honeycomb gold-containing mineral adsorption material, placing the multi-layer honeycomb gold-containing mineral adsorption material in the flotation bucket, and controlling the turbulent velocity in the flotation bucket according to the collected temperature, pressure and flow rate; obtaining the thickness of the honeycomb gold-containing mineral adsorption material, detecting the thickness displacement of the gold-containing mineral adsorption material, pre-setting a thickness displacement threshold, and generating a flow rate control action and a recovery action according to the thickness displacement and the thickness displacement threshold; executing a separation operation of the gold-containing mineral adsorption material in the flotation bucket according to the recovery action, and uploading the recovery action to a ship control center.

Description

Technical Field

[0001] The present invention relates to the technical field of submarine robots, and in particular to a submarine in-situ gold ore flotation method and system. Background Art

[0002] Seafloor hydrothermal sulfides, a key deposit of deep-sea gold resources, face significant challenges in their mining. Seafloor hydrothermal fluids face extreme conditions of high temperature and pressure. Typically, temperatures at seafloor heat flow locations can reach as high as 300-400 degrees Celsius, and pressures can reach 30-40 MPa. Traditional gold mining technology, which relies on physical mineral crushing, is not adaptable to these extreme conditions. On the one hand, traditional physical mineral crushing mining technology consumes extremely high energy on the seafloor. On the other hand, traditional technical solutions can easily disturb seafloor hydrothermal sulfide deposits and cause chemical pollution on the seafloor, significantly impacting the marine ecosystem. Summary of the Invention

[0003] One of the inventive purposes of the present invention is to provide a method and system for in-situ flotation of seabed gold. The method and system utilize the natural power of seabed hydrothermal fluids and adopt a suction-type fluid circulation method to perform flotation adsorption of gold elements. Therefore, during the enrichment process of gold elements, the present invention does not require large-scale physical crushing equipment to perform high-energy crushing processing in extreme environments. It does not require a large amount of external energy supply, which is in line with the concept of green mining, effectively reduces the energy consumption cost of seabed gold mining, and also increases the working life of seabed robots.

[0004] Another object of the present invention is to provide a method and system for in-situ flotation of seabed gold ore. The method and system use gold-containing mineral adsorption materials to construct a honeycomb structure. The gold-containing mineral adsorption materials in the honeycomb structure are arranged in a flotation barrel, and a turbulence generator is used to generate turbulence in the flotation barrel to increase the contact rate between the seabed hydrothermal fluid and the gold-containing mineral adsorption materials. The temperature, pressure and flow rate in the flotation barrel are monitored in real time, and the porosity control of the chamber door and the flow rate in the flotation barrel are controlled according to the temperature, pressure and flow rate in the flotation barrel. This allows the gold element to be efficiently adsorbed and enriched without causing damage to the seabed ecological environment, and can effectively protect the performance and safety of the flotation device in the harsh environment of the seabed.

[0005] Another object of the present invention is to provide a method and system for flotation of in-situ gold ore on the seabed. The method and system only absorb and obtain gold elements in the seabed hydrothermal fluid through the gold-containing mineral adsorption material. During the adsorption process of the gold element, no chemicals are put into the flotation bucket, and no chemicals enter the seabed hydrothermal vents through the circulating fluid. The gold-containing mineral adsorption material is a reusable material. Therefore, the technical solution of the present invention has an environmentally friendly effect of no chemical pollution to the seabed environment, and the reused gold-containing mineral adsorption material also improves resource utilization.

[0006] Another object of the present invention is to provide a method and system for in-situ gold flotation on the seabed. The method and system construct an automated information transmission system for a seabed robot and a flotation control module. The seabed robot establishes a communication connection with a control ship located on the sea surface through a cable. The flotation control module sends the corresponding sensor data to the seabed robot, and the seabed robot sends the sensor data to the ship control center. Therefore, the control effect of the seabed flotation device can be effectively guaranteed through instant communication.

[0007] Another object of the present invention is to provide a method and system for in-situ flotation of seabed gold ore. The method and system use a nano-laser thickness sensor to irradiate the gold-containing mineral adsorption material at different time points to monitor the thickness of the gold-containing mineral adsorption material. The flotation control module and the seabed robot simultaneously set corresponding thickness thresholds. When the thickness of the gold-containing mineral adsorption material reaches the corresponding thickness, the flotation control module and the seabed robot respectively perform corresponding adsorption stopping and disassembly and recovery actions. Therefore, the present invention constructs an unmanned and automated recovery method for seabed gold element adsorption, and the split design of the recovery and collection mechanism can reduce the probability of damage caused by repeated lifting and lowering of the corresponding collection machine in extreme marine environments.

[0008] In order to achieve at least one of the above-mentioned objects, the present invention further provides a method for flotation of seabed in-situ gold ore, the method comprising:

[0009] The temperature, pressure and flow rate of the seafloor hydrothermal vents are collected, and the corresponding plume is obtained by suction according to the plume direction of the seafloor hydrothermal vents, and the plume is input into the flotation bucket;

[0010] Pre-constructing a multi-layer honeycomb gold-containing mineral adsorption material, placing the multi-layer honeycomb gold-containing mineral adsorption material in the flotation barrel, detecting the mineral adsorption thickness in the plume where the honeycomb gold-containing mineral adsorption material in different layers is located, and controlling the turbulent flow velocity in the flotation barrel according to the collected temperature, pressure, flow rate and mineral adsorption thickness;

[0011] Obtaining the thickness of the honeycomb-shaped gold-containing mineral adsorption material, detecting the thickness displacement of the gold-containing mineral adsorption material in real time, presetting a thickness displacement threshold, and generating a flow rate control action and a recovery action based on the thickness displacement and the thickness displacement threshold;

[0012] A separation operation of the gold-containing mineral adsorption material in the flotation bucket is performed according to the recovery action, and the recovery action is uploaded to a ship control center.

[0013] According to one of the preferred embodiments of the present invention, a nano-laser displacement sensor is used to irradiate the thickness displacement of the adsorption edge of the honeycomb-shaped gold-containing mineral adsorption material. When the switch of the fluid channel port of the flotation barrel is initially opened, the initial thickness displacement of the adsorption edge of the honeycomb-shaped gold-containing mineral adsorption material is defined as zero, and the thickness displacement of the adsorption edge is recorded in real time during the turbulent adsorption process of the adsorption edge; wherein when the thickness displacement is greater than a preset thickness displacement threshold, a turbulent action including stopping is generated in the corresponding honeycomb-shaped gold-containing mineral adsorption material layer; wherein the honeycomb-shaped gold-containing mineral adsorption material has different porosities between different layers, and under the same flow rate, the porosity becomes smaller as the axial flow velocity of the plume flow increases, so as to ensure sufficient contact and adsorption of metal elements by honeycomb-shaped gold-containing mineral adsorption materials in different layers.

[0014] According to another preferred embodiment of the present invention, the nano-laser displacement sensor is used to irradiate the thickness displacement of the adsorption edges of different layers of honeycomb-shaped gold-containing mineral adsorption materials, and the thickness displacement of the adsorption edges of different layers of honeycomb-shaped gold-containing mineral adsorption materials is monitored in real time. When the detection and calculation show that the thickness displacement of at least 80% of the adsorption edges of all different layers of honeycomb-shaped gold-containing mineral adsorption materials is greater than a preset thickness displacement threshold, an action including stopping the plume suction action and closing the flotation bucket fluid channel port is generated, and the different actions are sent to the underwater robot for activating the disassembly action.

[0015] According to another preferred embodiment of the present invention, the method includes: using a laser displacement detector to detect in real time the mineral adsorption thickness of the adsorption edge of the honeycomb gold-containing mineral adsorption material in the corresponding layer in the flotation barrel, and presetting a first mineral adsorption thickness threshold; simultaneously obtaining the mineral adsorption thickness change rate of the adsorption edges corresponding to different honeycomb gold-containing mineral adsorption materials at the current moment, and presetting a first mineral adsorption thickness change rate threshold; if the mineral adsorption thickness of the adsorption edge corresponding to the honeycomb gold-containing mineral adsorption material at the current moment is greater than the preset first mineral adsorption thickness threshold, and the feather flow mineral adsorption thickness change rate of the adsorption edge corresponding to the honeycomb gold-containing mineral adsorption material at the current moment is less than the preset first mineral adsorption thickness change rate threshold, then generating a turbulent action including stopping the adsorption material layer corresponding to the honeycomb gold-containing mineral adsorption material.

[0016] According to another preferred embodiment of the present invention, the method includes: using a laser displacement detector to detect in real time the mineral adsorption thickness and mineral adsorption thickness change rate of the adsorption material layer plume of all honeycomb-shaped gold-containing mineral adsorption materials in the flotation bucket; wherein when the detection and calculation show that the mineral adsorption thickness of the plume in at least 80% of all different layers of honeycomb-shaped gold-containing mineral adsorption materials is greater than a preset first mineral adsorption thickness threshold and the mineral adsorption thickness change rate is less than the first mineral adsorption thickness change rate threshold, an action including stopping the plume suction and closing the flotation bucket fluid channel port is generated, and the different actions are sent to the underwater robot for activating the disassembly action.

[0017] According to another preferred embodiment of the present invention, the axial flow velocity of the plume of the adsorption material layer of each layer of the honeycomb-shaped gold-containing mineral adsorption material is detected in real time, and the porosity of the guide plate of the corresponding previous layer is automatically controlled to control the axial flow velocity of the plume, wherein the porosity of the guide plate is smaller according to the corresponding layer, as the axial flow velocity of the plume is higher, so that the plume fully contacts the honeycomb-shaped gold-containing mineral adsorption material; and the turbulence generator of the corresponding layer generates corresponding radial turbulence, so that the plume fully contacts the honeycomb-shaped gold-containing mineral adsorption material in different directions, so that the honeycomb-shaped gold-containing mineral adsorption material maintains balanced adsorption.

[0018] According to another preferred embodiment of the present invention, after obtaining the temperature and pressure of the submarine hydrothermal vent, when the temperature of the submarine hydrothermal vent is greater than 340°C or the pressure of the submarine hydrothermal vent is greater than 30 MPa, the axial flow velocity of the turbulent flow is controlled to be reduced to 0.6 m / s, and the valve of the flotation tank fluid channel is closed; when the temperature of the submarine hydrothermal vent is less than 340°C and the pressure of the submarine hydrothermal vent is less than 30 MPa, the axial flow velocity of the turbulent flow is controlled to be increased to 0.8 m / s.

[0019] According to another preferred embodiment of the present invention, when any one of the thickness displacement of the adsorption edge of the honeycomb gold-containing mineral adsorption material, the mineral adsorption thickness of the adsorption material layer plume of the honeycomb gold-containing mineral adsorption material, and the mineral adsorption thickness change rate meets the corresponding conditions, the corresponding underwater robot automatically generates a recovery action instruction and uploads the recovery action instruction to the ship control center. The underwater robot automatically disassembles the flotation bucket according to the recovery action instruction, and transports the disassembled flotation bucket to the ship control center via a cable. The ship control center separates the adsorption material layer of the honeycomb gold-containing mineral adsorption material in the corresponding flotation bucket from the flotation bucket.

[0020] In order to achieve at least one of the above-mentioned objects, the present invention further provides a seabed in-situ gold ore flotation system, which implements the above-mentioned seabed in-situ gold ore flotation method.

[0021] The present invention further provides a computer-readable storage medium storing a computer program, wherein the computer program is executed by a processor to implement the above-mentioned seabed in-situ gold flotation method. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 Shown is a schematic flow chart of a seabed in-situ gold flotation method according to the present invention. DETAILED DESCRIPTION

[0023] The following description is intended to disclose the present invention so that those skilled in the art can implement the present invention. The preferred embodiments described below are for illustrative purposes only, and those skilled in the art will readily appreciate other obvious variations. The basic principles of the present invention defined in the following description may be applied to other embodiments, variations, improvements, equivalents, and other technical solutions that do not depart from the spirit and scope of the present invention.

[0024] It is understandable that the term "one" should be understood as "at least one" or "one or more", that is, in one embodiment, the number of an element may be one, while in another embodiment, the number of the element may be multiple, and the term "one" should not be understood as a limitation on the quantity.

[0025] Please combine Figure 1 The present invention discloses a method and system for flotation of seabed in-situ gold ore, wherein the method mainly comprises:

[0026] S01. collecting the temperature, pressure, and flow rate of the seafloor hydrothermal vents, and obtaining the corresponding plume using a suction method according to the plume direction of the seafloor hydrothermal vents, and inputting the plume into a flotation bucket;

[0027] S02. Pre-constructing a multi-layer honeycomb gold-containing mineral adsorption material, placing the multi-layer honeycomb gold-containing mineral adsorption material in the flotation barrel, detecting the mineral adsorption thickness in the plume where the honeycomb gold-containing mineral adsorption material in different layers is located, and controlling the turbulent flow velocity in the flotation barrel according to the collected temperature, pressure, flow rate and mineral adsorption thickness;

[0028] S03, obtaining the thickness of the honeycomb-shaped gold-containing mineral adsorption material, detecting the thickness displacement of the gold-containing mineral adsorption material in real time, presetting a thickness displacement threshold, and generating a flow rate control action and a recovery action based on the thickness displacement and the thickness displacement threshold;

[0029] S04. Execute a separation operation of the gold-containing mineral adsorption material in the flotation bucket according to the recovery action, and upload the recovery action to a ship control center.

[0030] Specifically, the method for collecting plumes described in the present invention includes using a remotely operated vehicle (ROV) to transport a flotation device to a height of 2-3 meters above a submarine hydrothermal vent. The flotation device comprises a flotation bucket, a negative pressure suction device, and a flow rate control device. Multiple layers of honeycomb-shaped gold-bearing mineral adsorbent material are disposed within the flotation bucket. A connecting pipe to the flotation bucket serves as a fluid channel, the opening of which is located in the direction of the plume. The corresponding plume is adsorbed into the flotation bucket using negative pressure. The flotation bucket has a bidirectional opening, allowing partial circulation of the plume within and outside the flotation bucket. It should be noted that the structure and connection method of the flotation bucket and the related connecting device can be any feasible method, and the present invention does not make any improvements to the flotation bucket structure. Because the present invention utilizes negative pressure suction and the honeycomb-shaped gold-bearing mineral adsorbent for plume adsorption, no chemicals are used as adsorbents during the adsorption process. Therefore, the present invention does not cause any physical or chemical damage to the submarine hydrothermal vent environment, demonstrating excellent environmental protection.

[0031] In one of the preferred embodiments of the present invention, the honeycomb-shaped gold-containing mineral adsorption material is filled with high-temperature-resistant, high-pressure-resistant, and corrosion-resistant adsorption particles to form a multi-layer honeycomb network structure. The specific surface area of ​​the high-temperature-resistant, high-pressure-resistant, and corrosion-resistant adsorption particles after filling is greater than 800m² / g, and the magnetization intensity is greater than or equal to 45emu / g. A turbulence device can be configured in each layer of the honeycomb-shaped gold-containing mineral adsorption material, and a flow meter can be configured in the fluid channel to generate turbulence and measure plume flow rate, respectively. It should be noted that the above-mentioned thiol-functionalized Nanoparticles are only a preferred embodiment; other materials with gold adsorption capabilities, such as graphene, may be used in other preferred embodiments of the present invention. To reduce damage to the underwater robot, flotation tank, and associated electronic equipment from the high-temperature, high-pressure plume of the seabed, the surfaces of the underwater robot, flotation tank, and associated electronic equipment are coated with a ceramic insulation layer and a silicon carbide wear-resistant layer.

[0032] The flotation bucket described in the present invention is a detachable structure, and the recovery of the honeycomb-shaped gold-bearing mineral adsorbent material is accomplished through the coordinated action of an underwater robot (ROV). It should be noted that since the various disassembly structures can all be split, the present invention does not impose any specific limitations on this. Therefore, the use of a split, detachable structure to recover the corresponding adsorbent material in the present invention can reduce damage to the entire adsorption device caused by repeated ascent and descent pressure fluctuations in the deep sea. In one preferred embodiment of the present invention, the guide plate configured within the flotation bucket can be a titanium foam guide filter plate. When the flotation bucket is disassembled by the underwater robot and transferred to a ship control center at sea level, the corresponding honeycomb-shaped gold-bearing mineral adsorbent material can be obtained by disassembling the titanium foam guide filter plate within the flotation bucket. The gold element minerals adsorbed on the surface of the honeycomb-shaped gold-bearing mineral adsorbent material are then removed using specialized equipment and refined to obtain the corresponding elemental gold. The honeycomb-shaped gold-containing mineral adsorption material is reusable and can be installed in the flotation barrel again to perform the plume adsorption operation again after removing the gold element minerals adsorbed on the surface. Compared with the traditional technical solution using chemical flotation, it has better environmental protection and energy saving effects.

[0033] It is worth mentioning that the core technical solution of the present invention is how to automatically complete the adsorption of gold minerals under the high temperature and high pressure environment of the seabed, and how to accurately determine whether the adsorption amount of gold minerals has reached saturation. The present invention provides two specific embodiments to solve the above technical problems:

[0034] The specific technical solution of the first preferred embodiment provided by the present invention includes: a nano-laser displacement sensor is configured in the flotation barrel to detect the thickness change of the adsorption edge of the honeycomb-shaped gold-containing mineral adsorption material, wherein the nano-laser displacement sensor emits a laser signal to the adsorption edge of the honeycomb-shaped gold-containing mineral adsorption material, and part of the laser will be reflected by the adsorption edge of the honeycomb-shaped gold-containing mineral adsorption material. The nano-laser displacement sensor can calculate the reception time of the reflected light, which is used to calculate the distance between the nano-laser displacement sensor and the adsorption edge of the honeycomb-shaped gold-containing mineral adsorption material. Since the surface of the adsorption edge of the honeycomb-shaped gold-containing mineral adsorption material will become thicker after it adsorbs the relevant gold-containing minerals in the plume, the thickness displacement will change, so that the time difference of the reflected light received by the nano-laser displacement sensor after irradiating the adsorption edge again will become smaller. For example, the time difference from emitting light to receiving reflected light by the nano-laser displacement sensor in the initial state before flotation is defined as , at this time, the thickness displacement is defined as 0. After the flotation is completed, the time difference from the emission of light to the reception of reflected light by the nano-laser displacement sensor is , the thickness displacement of the adsorption edge of the honeycomb gold-containing mineral adsorption material , where c represents the speed of light in water, which can be assumed to be the speed of light in a vacuum. When the surface of the honeycomb-shaped gold-containing mineral adsorbent material is enriched to a certain degree, the corresponding surface is covered and no longer in direct contact with new gold minerals. The corresponding bonds no longer produce an adsorption effect with the gold minerals, resulting in no more efficient gold mineral adsorption. At this point, a recovery instruction for the honeycomb-shaped gold-containing mineral adsorbent material can be generated. This recovery instruction can be generated synchronously by an underwater robot or the flotation control module itself, which then uploads the recovery instruction to the ship control center at the surface.

[0035] Since different honeycomb gold-containing mineral adsorption materials have different adsorption capacities, that is, the thickness of the enrichment on the adsorption edge of the honeycomb gold-containing mineral adsorption material is different, the present invention determines the thickness displacement threshold according to the empirical value of the enrichment thickness of different honeycomb gold-containing mineral adsorption materials. , wherein the empirical value needs to be obtained by adapting to the high temperature and high pressure environment of the seabed hydrothermal vent. For example, the empirical value of the enrichment thickness of the honeycomb gold-bearing mineral adsorption material under the experimental conditions of 320°C and 30MPa (megapascals) can be set in the laboratory. In other preferred embodiments of the present invention, different empirical values ​​can be set according to the seabed heat flow conditions. The present invention can add the nano-laser displacement sensor to the adsorption material layer of the honeycomb gold-bearing mineral adsorption material in the multi-layer position to detect the thickness displacement d of each layer of adsorption edge. When the thickness displacement d of the adsorption edge of the corresponding layer ≥ the thickness displacement threshold , then an instruction including stopping the turbulent action is generated in the corresponding layer. At this time, the nano-laser displacement sensor can effectively identify the enrichment of the gold element minerals in the current layer, and then automatically generate the turbulent flow velocity action of the gold-containing mineral adsorption material in the corresponding layer, thereby ensuring that the surfaces of the gold-containing mineral adsorption materials in different layers have a relatively balanced adsorption of gold element minerals, thereby improving the adsorption effect of the gold-containing mineral adsorption material. Furthermore, in the above-mentioned first preferred embodiment, since the adsorption effect of the gold-containing mineral adsorption materials in different layers is not so balanced, that is, the thickness displacement d of the adsorption edge of the corresponding layer cannot be guaranteed to reach the thickness displacement threshold. In order to avoid the influence of inefficient adsorption on the recovery of gold minerals, and considering the reasons for the overall error, the present invention performs the following processing based on the first preferred embodiment:

[0036] The nano-laser displacement sensor is used to illuminate the thickness displacement of the adsorption edges of different layers of honeycomb-shaped gold-bearing mineral adsorption material and monitor the thickness displacement of the adsorption edges of the different layers in real time. When the thickness displacement of at least 80% of all layers of the honeycomb-shaped gold-bearing mineral adsorption material is greater than a preset thickness displacement threshold, an action is generated, including stopping the plume suction and closing the flotation bucket fluid channel port. These actions are then transmitted to the underwater robot to activate the removal and recovery actions. This process takes into account the impact of thickness errors, reducing the impact of local inefficient adsorption on the overall recovery efficiency of the honeycomb-shaped gold-bearing mineral adsorption material.

[0037] Furthermore, the present invention also provides a second preferred embodiment to address the automatic decision-making issue of recovering the honeycomb gold-bearing mineral adsorption material. Specifically, the embodiment includes the following steps: using a laser displacement detector to detect in real time the mineral adsorption thickness of the adsorption material layer corresponding to the honeycomb gold-bearing mineral adsorption material within the flotation tank, and presetting a first mineral adsorption thickness threshold; simultaneously detecting the mineral adsorption thickness change rate of the adsorption material layers corresponding to different honeycomb gold-bearing mineral adsorption materials at the current moment, and presetting a first mineral adsorption thickness change rate threshold; if the mineral adsorption thickness of the adsorption material layer corresponding to the honeycomb gold-bearing mineral adsorption material at the current moment is greater than the pre-set first mineral adsorption thickness threshold, and the mineral adsorption thickness change rate of the adsorption material layer corresponding to the honeycomb gold-bearing mineral adsorption material at the current moment is less than the pre-set first mineral adsorption thickness change rate threshold, then generating turbulence in the adsorption material layer corresponding to the honeycomb gold-bearing mineral adsorption material, including stopping turbulence. In this second preferred embodiment of the present invention, the mineral adsorption thickness and change detection results in the plume can be used to determine whether the current layer has been "sufficiently enriched and adsorbed" with gold-bearing minerals. When the thickness is greater than a certain threshold and as the turbulent flow proceeds, the rate of change of the mineral adsorption thickness is very small, it can be considered that the adsorption edge of the adsorption material layer of the current honeycomb-shaped gold-containing mineral adsorption material is covered with the corresponding gold-containing minerals, and at this time, no new effective gold-containing minerals are adsorbed to the adsorption edge.

[0038] To reduce the impact of local errors on the recovery efficiency of the adsorption material layer of the honeycomb-shaped gold-bearing mineral adsorption material, the present invention further incorporates the following configuration: a laser displacement detector is used to detect in real time the mineral adsorption thickness and mineral adsorption thickness change rate of the adsorption material layer plumes of the multiple layers of honeycomb-shaped gold-bearing mineral adsorption material within the flotation tank. When the detection and calculation show that the mineral adsorption thickness of the plumes in at least 80% of all different layers of the honeycomb-shaped gold-bearing mineral adsorption material exceeds a preset first mineral adsorption thickness threshold and the mineral adsorption thickness change rate is less than the first mineral adsorption thickness change rate threshold, an action is generated, including stopping the plume intake and closing the flotation tank fluid channel port. These actions are then transmitted to the underwater robot for activation of the removal action. This embodiment also prevents the impact of local errors in the mineral adsorption thickness and mineral adsorption thickness change rate within all layers on overall recovery efficiency.

[0039] In one of the preferred embodiments of the present invention, in order to protect the safety of the flotation bucket, the present invention further provides the following processing logic: after obtaining the temperature and pressure of the seabed hydrothermal vent, when the temperature of the seabed hydrothermal vent is greater than 340°C or the pressure of the seabed hydrothermal vent is greater than 30 MPa, the axial flow velocity of the turbulent flow is controlled to be reduced to 0.6 m / s, and the valve of the fluid channel port of the flotation bucket is closed; when the temperature of the seabed hydrothermal vent is less than 340°C and the pressure of the seabed hydrothermal vent is less than 30 MPa, the axial flow velocity of the turbulent flow is controlled to be increased to 0.8 m / s.

[0040] In the embodiments disclosed in the present invention, the processes described above with reference to the flowchart can be implemented as a computer software program. The embodiments disclosed in the present invention include a computer program product, which includes a computer program carried on a computer-readable medium, and the computer program contains program code for executing the method shown in the flowchart. In such an embodiment, the computer program can be downloaded and installed from a network through a communication part, and / or installed from a removable medium. When the computer program is executed by a central processing unit (CPU), the above functions are not limited to those in the method of the present application. It should be noted that the computer-readable medium mentioned above in the present application can be a computer-readable signal medium or a computer-readable storage medium or any combination of the above. The computer-readable storage medium can be, for example, but not limited to, an electrical, magnetic, optical, electromagnetic, infrared, or semiconductor system, device or device, or any combination of the above. More specific examples of computer-readable storage media may include, but are not limited to, an electrical connection having one or more wire segments, a portable computer disk, a hard disk, random access memory (RAM), read-only memory (ROM), erasable programmable read-only memory (EPROM or flash memory), optical fiber, a portable compact disk read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination thereof. In this application, a computer-readable storage medium may be any tangible medium that contains or stores a program that can be used by or in conjunction with an instruction execution system, apparatus, or device. In this application, a computer-readable signal medium may include a data signal propagated in baseband or as part of a carrier wave, which carries computer-readable program code. Such a propagated data signal may take a variety of forms, including, but not limited to, an electromagnetic signal, an optical signal, or any suitable combination thereof. A computer-readable signal medium may also be any computer-readable medium other than a computer-readable storage medium that can transmit, propagate, or transfer a program for use by or in conjunction with an instruction execution system, apparatus, or device. Program code embodied on a computer-readable medium may be transmitted using any appropriate medium, including but not limited to wireless, electrical wire, optical fiber cable, RF, etc., or any suitable combination thereof.

[0041] The flow charts and block diagrams in the accompanying drawings illustrate the possible implementation architecture, functions and operations of the system, method and computer program product according to various embodiments of the present invention. In this regard, each box in the flow chart or block diagram can represent a module, program segment, or a part of code, and the module, program segment, or a part of code contains one or more executable instructions for realizing the specified logical function. It should also be noted that in some alternative implementations, the functions marked in the box can also occur in a different order than that marked in the accompanying drawings. For example, two boxes represented in succession can actually be executed substantially in parallel, and they can sometimes be executed in the opposite order, depending on the functions involved. It should also be noted that each box in the block diagram and / or flow chart, and the combination of the boxes in the block diagram and / or flow chart, can be implemented with a dedicated hardware-based system that performs the specified function or operation, or can be implemented with a combination of dedicated hardware and computer instructions.

[0042] Those skilled in the art should understand that the embodiments of the present invention described above and shown in the accompanying drawings are only examples and do not limit the present invention. The objectives of the present invention have been fully and effectively achieved. The functional and structural principles of the present invention have been demonstrated and explained in the embodiments. Without departing from the principles, the implementation methods of the present invention may be subject to any deformation or modification.

Claims

1. A method for flotation of seabed in-situ gold ore, characterized in that: The method comprises: The temperature, pressure and flow rate of the seafloor hydrothermal vents are collected, and the corresponding plume is obtained by suction according to the plume direction of the seafloor hydrothermal vents, and the plume is input into the flotation bucket; Pre-constructing a multi-layer honeycomb gold-containing mineral adsorption material, placing the multi-layer honeycomb gold-containing mineral adsorption material in the flotation barrel, and controlling the turbulent velocity in the flotation barrel according to the collected temperature, pressure, and flow rate; Obtaining the thickness of the honeycomb-shaped gold-containing mineral adsorption material, detecting the thickness displacement of the gold-containing mineral adsorption material in real time, presetting a thickness displacement threshold, and generating a flow rate control action and a recovery action based on the thickness displacement and the thickness displacement threshold; A separation operation of the gold-containing mineral adsorption material in the flotation bucket is performed according to the recovery action, and the recovery action is uploaded to a ship control center.

2. The seabed in-situ gold flotation method according to claim 1, characterized in that: A nano-laser displacement sensor is used to illuminate the thickness displacement of the adsorption edge of the honeycomb-shaped gold-containing mineral adsorption material. When the switch of the fluid channel port of the flotation barrel is initially opened, the initial thickness displacement of the adsorption edge of the honeycomb-shaped gold-containing mineral adsorption material is defined as zero, and the thickness displacement of the adsorption edge is recorded in real time during the turbulent adsorption process of the adsorption edge. When the thickness displacement is greater than a preset thickness displacement threshold, a turbulent action including stopping is generated in the corresponding honeycomb-shaped gold-containing mineral adsorption material layer. The honeycomb-shaped gold-containing mineral adsorption material has different porosities between different layers, and the porosity decreases as the axial flow velocity of the plume increases, so that different layers of honeycomb-shaped gold-containing mineral adsorption materials can fully contact and adsorb the gold-containing mineral.

3. The seabed in-situ gold flotation method according to claim 2, characterized in that: The nano-laser displacement sensor is used to illuminate the thickness displacement of the adsorption edges of different layers of honeycomb gold-containing mineral adsorption materials, and the thickness displacement of the adsorption edges of different layers of honeycomb gold-containing mineral adsorption materials is monitored in real time. When the detection and calculation show that the thickness displacement of at least 80% of the adsorption edges of all different layers of honeycomb gold-containing mineral adsorption materials is greater than a preset thickness displacement threshold, an action including stopping the plume suction and closing the flotation bucket fluid channel port is generated, and the different actions are sent to the underwater robot for activating the disassembly action.

4. The seabed in-situ gold flotation method according to claim 1 or 3, characterized in that: The method includes: using a laser displacement detector to detect and obtain in real time the mineral adsorption thickness of the adsorption edge of the honeycomb-shaped gold-containing mineral adsorption material in the corresponding layer in the flotation bucket, and presetting a first mineral adsorption thickness threshold; simultaneously obtaining the mineral adsorption thickness change rate of the adsorption edges corresponding to different honeycomb-shaped gold-containing mineral adsorption materials at the current moment, and presetting the first mineral adsorption thickness change rate threshold; if the mineral adsorption thickness of the adsorption edge corresponding to the honeycomb-shaped gold-containing mineral adsorption material at the current moment is greater than the preset first mineral adsorption thickness threshold, and the plume flow mineral adsorption thickness change rate of the adsorption edge corresponding to the honeycomb-shaped gold-containing mineral adsorption material at the current moment is less than the preset first mineral adsorption thickness change rate threshold, then generating a turbulent action including stopping the turbulent flow in the adsorption material layer corresponding to the honeycomb-shaped gold-containing mineral adsorption material.

5. The method for flotation of seabed in-situ gold ore according to claim 4, characterized in that: The method includes: using a laser displacement detector to detect in real time the mineral adsorption thickness and mineral adsorption thickness change rate of the adsorption material layer plume of all honeycomb-shaped gold-containing mineral adsorption materials in the flotation bucket; when the detection and calculation show that the mineral adsorption thickness of the plume in at least 80% of all different layers of honeycomb-shaped gold-containing mineral adsorption materials is greater than a preset first mineral adsorption thickness threshold and the mineral adsorption thickness change rate is less than the first mineral adsorption thickness change rate threshold, generating an action including stopping the plume suction and closing the flotation bucket fluid channel port, and sending the different actions to the underwater robot for activating the disassembly action.

6. The method for flotation of seabed in-situ gold ore according to claim 1, characterized in that: The axial flow velocity of the plume of the adsorption material layer of each layer of the honeycomb-shaped gold-containing mineral adsorption material is detected in real time, and the porosity of the guide plate of the corresponding previous layer is automatically controlled under the corresponding flow rate to control the axial flow velocity of the plume, wherein the porosity of the guide plate is smaller according to the corresponding layer, as the axial flow velocity of the plume is higher, so that the plume fully contacts the honeycomb-shaped gold-containing mineral adsorption material; and turbulence including corresponding radial direction is generated by the turbulence generator of the corresponding layer, so that the plume fully contacts the honeycomb-shaped gold-containing mineral adsorption material in different directions, so that the honeycomb-shaped gold-containing mineral adsorption material maintains balanced adsorption.

7. The method for flotation of seabed in-situ gold ore according to claim 1, characterized in that: After obtaining the temperature and pressure of the submarine hydrothermal vent, when the temperature of the submarine hydrothermal vent is greater than 340°C or the pressure of the submarine hydrothermal vent is greater than 30 MPa, the axial flow velocity of the turbulent flow is controlled to be reduced to 0.6 m / s, and the valve of the fluid channel opening of the flotation tank is closed. When the temperature of the submarine hydrothermal vent is less than 340°C and the pressure of the submarine hydrothermal vent is less than 30 MPa, the axial flow velocity of the turbulent flow is controlled to be increased to 0.8 m / s.

8. The method for flotation of seabed in-situ gold ore according to claim 5, characterized in that: When any one of the thickness displacement of the adsorption edge of the honeycomb gold-containing mineral adsorption material, the mineral adsorption thickness of the adsorption material layer plume of the honeycomb gold-containing mineral adsorption material, and the mineral adsorption thickness change rate meets the corresponding conditions, the corresponding underwater robot automatically generates a recovery action instruction and uploads the recovery action instruction to the ship control center. The underwater robot automatically disassembles the flotation bucket according to the recovery action instruction, and transports the disassembled flotation bucket to the ship control center via a cable. The ship control center separates the adsorption material layer of the honeycomb gold-containing mineral adsorption material in the corresponding flotation bucket from the flotation bucket.

9. A seabed in-situ gold flotation system, characterized in that: The system implements the seabed in-situ gold flotation method according to any one of claims 1 to 8.

10. A computer-readable storage medium, characterized in that The computer-readable storage medium stores a computer program, and the computer program is executed by a processor to implement the seabed in-situ gold flotation method according to any one of claims 1 to 8.

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