Method and apparatus for the production of spherical particles of ammonium nitrate (to) with a narrow particle size distribution

摘要

A method for the production of spherical particles of an oxidizer for driving - and / or explosive substances such as ammonium nitrate (to) or ammonium dinitramide (adn), wherein the oxidizer is first melted in a melting vessel and then is atomized by means of a spraying device, is characterized in that the melt during the sputtering operation by a regulated pressure under substantially constant pressure is kept. A for carrying out the method according to the present invention, suitable device with a melting vessel to the melting of the oxidizer and for receiving the melt, of a spray device for atomizing the melt is distinguished by controllable pressurizing accordingly, by means of which the melt during the sputtering operation under a substantially constant pressure can be held. In this way, without an expensive and time-consuming reworking of the final product a uniform, narrow size distribution of the oxidizer - particles.