Reverse-flow type mineral-water separation device

Abstract

The invention provides a reverse-flow type mineral-water separation device which comprises an inner pipe and an outer pipe nested on the inner and outer sides, wherein the inner pipe is connected with the outer pipe through a supporting structure; the inner pipe is a lifting channel; a cavity between the inner pipe and the outer pipe is a reverse-flow channel; a separation device area is formed in the upper part of the outer pipe; the diameter of the outer pipe positioned in the separation device area is gradually increased from bottom to top; a reverse-flow hood which is low in middle and arched to the periphery in an arc shape covers the top of the outer pipe; an outer turnup is arranged on the top of the inner pipe positioned in the separation device area; the net flow area between the edge of the inner pipe and the reverse-flow hood is larger than or equal to the cross-sectional area of the inner pipe; a spiral sieve plate which is spiral downwards and provided with a drain hole is arranged in the reverse-flow channel of the separation device area; the spiral sieve plate is greater than or equal to 360 degrees. A conveying tank which is tangential to the inner pipe and extends to the outer part of the outer pipe is connected to the tail end of the spiral sieve plate. According to the device disclosed by the invention, mineral and seawater can be rapidly separated, and the mining efficiency is greatly improved. Moreover, the seawater is directly returned back to the seabed, and pollution to superjacent waters is avoided.

Description

technical field [0001] The invention relates to the field of marine mining risers, in particular to a backflow type mineral water separation device. Background technique [0002] The ocean is rich in mineral resources. With the depletion of land mineral resources, deep sea mining has become a hot spot for future development. Ocean mining uses the principle of liquid jets to lift ore through risers that are lowered from mining vessels to the sea floor. The water in which the ore is lifted contains not only the ore, but also mud, sand and impurities sucked up from the seabed. If it is directly discharged to the sea surface, it will cause serious pollution to the upper waters of the ocean; high. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a backflow type mineral water separation device, which can improve the mining efficiency, and will not pollute the upper waters when sending seawater back to the seabed, so a...

AI Technical Summary

Problems solved by technology

The water in which the ore is lifted contains not only the ore, but also mud, sand and impurities sucked up from the seabed. If it is directly discharged to the sea surface, it will cause serious pollution to the upper waters of the ocean; high

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