Method for Synthesizing Silicon Nitride by Rotary Kiln Method

A silicon nitride and rotary kiln technology, applied in nitrogen compounds, chemical instruments and methods, inorganic chemistry, etc., can solve the problems of low production efficiency, achieve energy saving, uniform cloth distribution, and adjustable powder supply speed

Active Publication Date: 2020-07-03
宁夏时星科技有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The existing method is a batch production method, the production efficiency is low, and there is an urgent need for overall equipment and process improvement

Method used

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  • Method for Synthesizing Silicon Nitride by Rotary Kiln Method
  • Method for Synthesizing Silicon Nitride by Rotary Kiln Method

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Embodiment Construction

[0028] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with specific embodiments and with reference to the accompanying drawings. In the specification, the same or similar reference numerals designate the same or similar components. The following description of the embodiments of the present invention with reference to the accompanying drawings is intended to explain the general inventive concept of the present invention, but should not be construed as a limitation of the present invention.

[0029] Throughout this specification, reference to "one embodiment," "an embodiment," "an example," or "example" means that a particular feature, structure, or characteristic described in connection with the embodiment or example is included in the present invention. In at least one embodiment. Thus, appearances of the phrases "in one embodiment," "in an embodim...

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Abstract

The invention discloses a method for synthesizing silicon nitride by a rotary kiln process. The method comprises the steps: spraying siliceous powder from a solid powder charging opening in a rotary kiln main body; introducing nitrogen gas from a nitrogen gas inlet in the rotary kiln main body; and subjecting the nitrogen gas and the siliceous powder to a self-propagation reaction in the rotary kiln main body, thereby producing the silicon nitride. According to the method for synthesizing the silicon nitride by the rotary kiln process, disclosed by the invention, the mass continuous synthesisof the silicon nitride can be achieved.

Description

technical field [0001] The invention relates to the field of nitride synthesis, and further relates to a method for synthesizing silicon nitride by a rotary kiln method. Background technique [0002] Nitride, especially silicon nitride, is widely used in industry. For example, silicon nitride, which has many excellent properties, such as wear resistance, self-lubrication, high temperature and oxidation resistance, etc., can be used to prepare high temperature resistant parts, heat transfer parts, wear resistant materials and so on. [0003] Self-propagating technology is a way to synthesize materials by exothermic chemical reaction itself. Since the reaction can be continued through the exothermic chemical reaction itself, and the reaction can continue without an external heat source, it is favored by the industry. [0004] As a nitrogen compound synthesis reactor, the rotary kiln is under a slightly positive pressure state, the reactants are continuously charged into the f...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01B21/068
CPCC01B21/0682
Inventor 杜文贵秦军
Owner 宁夏时星科技有限公司
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