Downstream collecting type magnetic medium, magnetic medium stack, intermittent magnetic separation equipment, vertical ring high gradient magnetic separator and magnetic beneficiation method

Abstract

The invention discloses a downstream collecting type magnetic medium. The magnetic medium is sequentially provided with a non-magnetic-conductive portion and a magnetic conductive portion in the flowdirection of slurry; and the non-magnetic-conductive portion and the magnetic conductive portion are fixedly connected with each other. The invention further provides a magnetic medium stack comprising magnetic media, and the magnetic media are arranged in parallel at intervals. The invention further provides intermittent magnetic separation equipment comprising the magnetic medium stack, a magnetic beneficiation method of the intermittent magnetic separation equipment, a vertical ring high gradient magnetic separator and a magnetic beneficiation method of the vertical ring high gradient magnetic separator correspondingly. The magnetic medium is sequentially provided with the non-magnetic-conductive portion and the magnetic conductive portion in the flow direction of slurry, thus, accumulation of magnetic particles on the upstream portion of the magnetic medium is eliminated, most or all of the magnetic particles are accumulated on the downstream portion of the magnetic medium, and direct impact of ore current to a magnetic mineral accumulation zone is reduced, so that mechanical inclusions are reduced or eliminated, the recovery rate of fine-grained weakly magnetic minerals is increased, and the grade of recovered minerals is improved.

Description

technical field

[0001] The invention belongs to the field of mineral separation equipment, and in particular relates to a magnetic medium, a magnetic medium stack, a magnetic separator and a magnetic separation method. Background technique

[0002] Weak magnetic mineral resources mainly include hematite, limonite, siderite, ilmenite, wolframite, manganese ore and tantalum-niobium rare earth ore. These weakly magnetic mineral raw materials have played an important role in my country's economic development. High-gradient magnetic separation is a common method for processing weak magnetic minerals. However, due to the mechanical inclusion of gangue minerals in the separation process, it is difficult to obtain qualified weak magnetic mineral concentrate products in a single high-gradient magnetic separation operation. High-gradient magnetic separation is used for roughing, and the obtained rough concentrate is then flotation-selected to obtain the final concentrate product. The...

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