A kind of iron scale oxidation treatment equipment

Abstract

The invention discloses an iron scale oxidation treatment device. The iron scale oxidation treatment device comprises a circular oxidation kiln, a circular cooling kiln, an electric control cabinet, a feeding device, a heat exchanger and a bag type dust remover, wherein the cooling kiln is arranged under the oxidation kiln; iron scale powder is introduced into the oxidation kiln, heated and oxidized; then the iron scale powder flows into the cooling kiln. The iron scale oxidation treatment device is ingenious in skill, and is convenient and practical; the heat released by the iron scale oxidation reaction is fully used; the heating heat applied to the outside is reduced as far as possible; the iron scale is fully oxidized; products are high in quality; the overall iron scale oxidation treatment device is sealed; the internal part of the iron scale oxidation treatment device is insulated by high-temperature-resistant fiber modules; the energy is saved and the consumption is reduced; the iron scale powder discharged in the waste gas can be recycled and reused; the resources are saved; the production cost is reduced; the working efficiency is improved.

Description

technical field [0001] The invention belongs to the technical field of permanent magnet ferrite production equipment, and in particular relates to iron scale oxidation treatment equipment. Background technique [0002] Iron scale is the oxide scale that peels off the surface of the steel when the steel is hot-rolled in the rolling mill. Among them, the low-carbon steel scale is the main raw material of some permanent magnet ferrites. [0003] The main components of iron scale are: a large amount of Fe3O4 and a small amount of metallic iron, and Fe3O4 (ferrous iron) and metallic iron must be converted into Fe2O3 (ie trivalent iron) before they can be reacted with other main raw materials SrCO3 (or BaCo3) to form permanent Ferrite. [0004] The conventional method is: stir and mix the iron scale powder and SrCO3 (or BaCo3) powder to form small pellets and send them into the rotary kiln. 13m chain grate machine, the chain drives the grate plate (about 300 pieces) to rotate ci...

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Problems solved by technology

[0004] The conventional method is: stir and mix the iron scale powder and SrCO3 (or BaCo3) powder to form small pellets and send them into the rotary kiln. 13m chain grate machine, the chain drives the grate plate (about 300 pieces) to rotate circularly, the small pellets of iron scale are sent to the grate plate to pile up, and then move forward, and the hot exhaust gas of the rotary kiln is led out by the induced draft fan, and passes through the The grate plate oxidizes the iron scale in the ball, and then sends it to the rotary kiln for high-temperature sintering; the disadvantages of this method: 1. High energy consumption, the sintering heat in front of the rotary kiln must take into account the use of the rotary kiln grate, and the grate is not easy to seal , large air leakage and high heat loss; 2. The grate plate is a vulnerable part, which is repeatedly heated and cooled, and it will be damaged quickly and costly; The group is dense, and it is not easy for air to penetrate into the iron oxide scale, so the performance of the produced permanent magnet ferrite is unstable, the consistency is not good, and the product grade is not high

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