Method for preparing micaceous iron oxide by molten salt growth method

A technology of mica iron oxide and molten salt method, which is applied in the direction of iron oxide, iron oxide/iron hydroxide, etc., which can solve the requirements of volatile, small particle size of mica iron oxide, high pressure vessel temperature resistance, pressure resistance and corrosion resistance Very strict and other issues, to achieve the effect of shortening the reaction time, lowering the synthesis temperature, and increasing the diffusion speed
CN101792186AInactive Publication Date: 2010-08-04FUJIAN KUNCAI MATERIAL TECH
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
FUJIAN KUNCAI MATERIAL TECH
Publication Date
2010-08-04
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention provides a method for preparing micaceous iron oxide, which has the advantages of controllable grain size and color change, high purity, complete and reliable production process, easy operation and high resource utilization rate, by a molten salt growth method. In the method, ammonium ferrous sulfate or ferrous sulfate or a mixture of ammonium ferrous sulfate and ferrous sulfate serving as an iron source and sulfates or chlorides or a mixture of sulfates and chlorides serving as a fluxing agent are mixed and melted to form the micaceous iron oxide, wherein the main component of the micaceous iron oxide is a-Fe2O3. The method has the advantages of low cost, easy operation, complete process, no toxicity, high chemical stability, high purity, high crystallinity, high heat resistance, easy realization of industrialization and the like.
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Description

technical field

[0001] The invention relates to a method for preparing mica iron oxide by using a molten salt method, which uses ammonium ferrous sulfate or ferrous sulfate or a mixture of the two as an iron source, sulfate or chloride as a molten salt flux, and belongs to inorganic powders The field of material preparation.

[0002] Background technique

[0003] The preparation methods of mica iron oxide mainly include natural mica iron oxide and artificial mica iron oxide. With the development and utilization of natural resources, high-grade natural mica iron oxide deposits are decreasing, and new composite materials have higher and higher quality requirements for mica iron oxide. Synthetic mica iron oxide has the advantages of controllable particle size and color, high chemical stability, high purity, good crystallization and high heat resistance. Synthetic mica iron oxide is gradually replacing natural mica iron oxide and is used in antirust paints, coatings, Pearlesc...

Claims

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