Iron ore powder fine screening device

Abstract

The invention provides an iron ore powder fine screening device, and relates to the field of ore extraction. The iron ore powder fine screening device comprises a machine shell, a magnetism attaching cylinder is fixedly connected to the upper end of the machine shell, a rotary grinding motor is fixedly connected to an inner groove of the magnetism attaching cylinder, a blocking disc is fixedly connected to the output end of the rotary grinding motor, a permanent magnet ring is fixedly connected to the bottom end of the blocking disc, a magnetism attaching plate is fixedly connected to the peripheral surface of the permanent magnet ring, and a gap exists between the magnetism attaching plate and the magnetism attaching cylinder. A grinding mechanism is fixedly connected below the permanent magnet ring, and a bearing disc is fixedly connected to the bottom end of the magnetism attaching cylinder and is in contact connection with the grinding mechanism. According to the iron ore powder fine screening device, through the conduction characteristic of magnetism, the magnetism of the permanent magnet ring can be conducted to the surface of the magnetism attaching plate, the iron ore powder passes through the surface of the magnetism attaching plate, weak magnetism can be temporarily attached to the surface of the iron powder, the iron powder and impurities can be distinguished, and the effect of distinguishing the impurities and the iron powder in the iron ore powder is achieved; and the problem that many impurities in the iron ore powder cannot be distinguished is solved.

Description

technical field [0001] The invention relates to the field of ore mining, in particular to a fine screening device for iron ore powder. Background technique [0002] Iron ore powder is a mineral powder that is processed by iron ore through beneficiation, crushing, sorting, grinding, etc. The types of iron ore powder are mainly divided into magnetite powder; hematite powder; limonite powder; silicate powder of siderite iron; and iron sulfide. Iron ore powder is the main raw material for the steel industry. [0003] In recent years, my country's infrastructure projects are developing rapidly. In order to meet the engineering needs, my country needs to import a large amount of iron ore every year. However, the iron content of my country's local iron ore is less than 60%. Therefore, a device that can finely screen iron ore powder is urgently needed. Contents of the invention [0004] Aiming at the deficiencies of the prior art, the present invention provides a fine screening ...

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Problems solved by technology

[0004] Aiming at the deficiencies of the prior art, the present invention provides a fine screening device for iron ore powder, which solves the problems that there are too many impurities in the iron ore powder that cannot be identified, that screening iron powder requires a large amount of water flow, and that it is difficult to separate iron powder and impurities

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