Dry powder deironing method and device

Abstract

The invention discloses a method and a device for removing iron from dry powder, which is characterized in that: a plurality of permanent magnet rods are arranged in a pipe through which dry powder passes; two ends of each permanent magnet rod are connected with non-magnetic rods; the permanent magnet rods are sleeved with scraping plates; the side faces of the scraping plates are provided with rings; a side pipe wall corresponding to the rings is provided with sealing gaskets; a side pipe wall corresponding to the inner sides of the rings is provided with ferromagnetic substance collection openings; ferromagnetic substances in the dry powder passing through the permanent magnet rods arranged in the pipe are attracted onto the permanent magnet rods till the ferromagnetic substances attracted onto the permanent magnet rods accumulate to a certain amount, and the scraping plates are pushed to scrape the ferromagnetic substances on the permanent magnet rods to the non-magnetic rods; at the same time, as the nonmagnetic rods are nonmagnetic, the ferromagnetic substances fall onto the rings and the rings attach to the sealing gaskets to seal the inner cavities of the rings to prevent the dry powder from entering the inner cavities of the rings; the ferromagnetic substance collection openings open to discharge the ferromagnetic substances in the inner cavities of the rings; and thus, the removal of iron from dry powder is realized. Compared with the prior art, the method and device have the advantage of removing the iron from the dry powder effectively before the moisture absorption of the dry powder.

Description

Technical field: [0001] The invention relates to a method and device for removing iron. Background technique: [0002] The existing production of kaolin or stone powder raw materials is to grind the dry raw materials into powder through a grinding mechanism. The powdery granular raw materials have strong hygroscopicity. If these raw materials are sent to the dry powder iron removal device for iron removal, the powdery granular raw materials will easily absorb moisture during the transfer process. After entering the dry powder iron removal device, the powdery granular raw materials after moisture absorption It is easy to stick to the magnetic rod, which seriously affects the iron removal efficiency of the dry powder iron removal device. Invention content: [0003] The object of the present invention is to provide a dry powder iron removal method and device that can effectively remove iron in the dry powder before the dry powder absorbs moisture. [0004] The dry powder ir...

AI Technical Summary

Problems solved by technology

[0002] The existing production of kaolin or stone powder raw materials is to grind the dry raw materials into powder through a grinding mechanism. The powdery granular raw materials have strong hygroscopicity. If these raw materials are sent to the dry powder iron removal device for iron removal, the powdery granular raw materials will easily absorb moisture during the transfer process. After entering the dry powder iron removal device, the powdery granular raw materials after moisture absorption It is easy to stick to the magnetic rod, which seriously affects the iron removal efficiency of the dry powder iron removal device

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