Production method of high-purity aluminum oxide and produced high-purity aluminum oxide

A high-purity alumina, production method technology, applied in alumina/hydroxide preparation, hydrogen production, chemical instruments and methods, etc., can solve the problems of high cost, serious equipment corrosion, difficult industrialization, etc.
CN111807397APending Publication Date: 2020-10-23吉林省氢汇新能源有限公司
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
吉林省氢汇新能源有限公司
Publication Date
2020-10-23

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Abstract

The invention discloses a production method of high-purity aluminum oxide. The production method comprises the following steps: a, weighing metal aluminum, subjecting the metal aluminum to smelting with a metal catalyst, and reacting obtained alloy aluminum with water to prepare hydrogen; b, separating slurry after the reaction of the aluminum with water, and drying the separated suspended slurryto obtain pseudo-boehmite; c, roasting the pseudo-boehmite powder to obtain aluminum oxide powder; d, distilling the aluminum oxide powder to remove included metal catalyst components so as to obtainhigh-purity alpha-aluminum oxide powder. The invention further discloses a prepared high-purity aluminum oxide product. The method is simple in process and short in flow, a hydrogen byproduct is obtained while high-purity aluminum oxide is prepared, and economic benefits are remarkable; the alloy used as the raw material is low in gallium and indium consumption, low in cost and easy to recycle; and the prepared high-purity aluminum oxide is low in impurity content, high in additional value, free of pollution and equipment corrosion in the preparation process and easy to apply and popularize.
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Description

Technical field

[0001] The present invention belongs to the technical field of alumina preparation. Specifically, the present invention relates to a method for preparing an aluminum hydrolysate by reacting high-purity metallic aluminum with pure water, and further processing to obtain high-purity alumina powder, and the obtained high-purity Alumina. Background technique

[0002] High purity alumina refers to Al 2 O 3 Alumina powder with a content of ≥99.99%, in addition to excellent characteristics such as high temperature resistance, chemical corrosion resistance, rapid cooling and heat resistance, and resistance to explosion, can also be widely used in LED artificial sapphire crystals, PDP phosphors, high-pressure sodium lamps, and luminescence. Materials, special ceramics, functional coatings, three primary colors, catalyst carriers, biological materials and other fields will be one of the high-end products with large output, high output value and wide range of applications in...

Claims

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