It is known from the principle that the pump–vessel combined ore lifting method has high head, large ores lifting capacity, and long-term working reliability. When applied to the deep-sea rigid pipe mining system, the main pump and power equipment installed on the mining ship is more convenient to operate and maintain. According to Bernoulli’s equation and two phases of hydrodynamics theory, the ore lifting equipment parameters have been calculated and analyzed. It is known that the pump head H of 1000m sea mining system is 124172m and that of 5000m sea mining system is 652760m. It is known that the pump–vessel combined lifting method is feasible in both theory and practice, therefore it is an ideal ore lifting method for a deep-sea rigid pipe mining system.

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