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New technology using iron oxide red produced from steel plant pickling solution to prepare high-performance iron oxide for soft magnetic materials

A technology of iron oxide red and soft magnetic materials, applied in the direction of iron oxide/iron hydroxide, iron oxide, magnetic materials, etc., can solve the problem of inability to use high-performance iron oxide, etc., and achieve the effect of high product purity and performance

Inactive Publication Date: 2019-11-19
李柏丛
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Problems solved by technology

[0006] The invention provides a new process for preparing high-performance iron oxide for soft magnetic materials from iron oxide red produced by pickling liquid in steel mills, that is, a high-performance iron oxide preparation process to solve the problem that the existing technology cannot use iron oxide red to produce The High Performance Iron Oxide Problem

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  • New technology using iron oxide red produced from steel plant pickling solution to prepare high-performance iron oxide for soft magnetic materials

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Embodiment Construction

[0017] In order to have a clearer understanding of the technical features, purposes and effects of the present invention, the present invention will now be described with reference to the accompanying drawings.

[0018] like figure 1 As shown, the implementation case of the present invention proposes a new process for preparing high-performance iron oxide for soft magnetic materials from the iron oxide red produced by the pickling solution of the steel factory. New processes for using iron in soft magnetic materials include:

[0019] Step A: Prepare the red iron oxide powder produced by the steel mill pickling solution as a raw material;

[0020] Step B: first add hydrochloric acid into the reaction kettle, then add iron oxide red powder into the reaction kettle, then pressurize the reaction kettle to 1MPa, heat to 90°C, and react for 150 minutes to generate a solution containing ferric chloride;

[0021] Step C: Add hydrochloric acid to the ferric chloride solution to form ...

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Abstract

The invention provides a new technology using iron oxide red produced from a steel plant pickling solution to prepare high-performance iron oxide for soft magnetic materials. The technology includes the following steps: adding hydrochloric acid into a reaction kettle, adding iron oxide red powder produced from the steel plant pickling solution into the reaction kettle, heating and pressurizing thereaction kettle to produce an iron chloride solution, performing extraction and purification to prepare a high-purity iron chloride solution, and carrying out a Ruthner spray roasting process on thehigh-purity iron chloride solution to produce the high-performance iron oxide with a purity of 99.9%. The technology has the advantages of low leaching pressure, recycling of 99.9% of hydrochloric acid, targeted purification, recycling of the extractant, and high performances of the product.

Description

technical field [0001] The invention relates to the field of powder functional materials, in particular to a new process for preparing high-performance iron oxide from iron oxide red produced by pickling liquid in steel mills for use in soft magnetic materials. Background technique [0002] High-performance iron oxide refers to ferric oxide with a purity of more than 99.6%. At present, it is mainly used as a raw material for the production of soft magnetic materials. It can be widely used in fields such as acoustic electricity, microwave, storage, communication, and military industry, and has broad application prospects. . [0003] Among the raw materials used in soft ferrite, iron oxide red is the most used, which accounts for 70% of the total raw materials. The quality of iron oxide red has a great influence on the performance of ferrite produced. [0004] At present, the pickling solution spray roasting process adopted in steel mills: mainly uses the pickling waste liqui...

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Application Information

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IPC IPC(8): C01G49/06H01F1/34
CPCC01G49/06C01P2006/42C01P2006/80H01F1/344
Inventor 吴卓李柏丛刘春东
Owner 李柏丛
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