Hydrojet type submarine polymetallic nodule collection device and method

Abstract

The invention discloses a hydraulic jet type seabed polymetallic nodule collecting device which comprises a collecting unit and an ore transferring and storing device which are installed at the two ends of the upper portion of seabed driving equipment, and the collecting unit can rotate on the seabed driving equipment and can work in cooperation with the ore transferring and storing device. The invention also discloses a collecting method using the device. Two hydraulic circuits are constructed to create an upward flow field environment for the polymetallic nodule ore by utilizing a seabed saturated water-rich environment through ingenious structural design, the polymetallic nodule ore is collected into the stock bin in a continuous hydraulic lifting mode, and the collecting device has small disturbance to the seabed environment and high collecting efficiency on the polymetallic nodule ore. The flow field is a circulating loop so that water is used up and the environmental friendlinessof the whole device is fully reflected under the condition of ensuring high efficiency and reliability of the whole device.

Description

technical field [0001] The invention relates to a seabed mining technology, in particular to a hydraulic jet type seabed polymetallic nodule collection device and method. Background technique [0002] The deep seabed is rich in solid ore resources such as polymetallic nodules, polymetallic sulfides, and cobalt crusts. These resources are an important material basis for future human development, and the development of deep-sea resources is an inevitable choice in the future. [0003] The occurrence environment of polymetallic nodules is extremely special: first, nodule ores occur on the seabed thousands of meters deep, and the pressure of the ocean environment is extremely high, and all modules must adapt to this extreme pressure environment; second, nodule ores occur in Some are half-buried, some are fully buried, and some are fully exposed in seawater on the surface or subsurface of the thin soft sediments, and the particle sizes vary. At present, the deep-sea polymetallic...

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Problems solved by technology

[0010] The above two patents still use a single mechanical device "mining wheel" in the collection of seabed polymetallic nodules. The mechanical parts of the single mechanical collection device will be stuck by large-diameter ores, and any parts of the mechanical collection will be damaged. In the extreme deep environment of the seabed, it cannot be repaired in time, resulting in disadvantages such as reduced mining efficiency

In addition, in the polymetallic nodules, the "mining wheel" is used to excavate the seabed soil layer connected with the metal nodules to the transmission track and then wash to remove impurities; on the one hand, this collection method greatly disturbs the seabed soil layer and is extremely poor in environmental friendliness ; On the other hand, the collection method leads to huge energy consumption and low collection efficiency

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