Apparatus for melting fine particles containing carbon and...

C - Chemistry – Metallurgy – 21 – C

Patent

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Details

C21C 5/48 (2006.01) C21B 5/00 (2006.01) C21C 5/34 (2006.01) C21C 5/46 (2006.01)

Patent

CA 2183784

An apparatus for and a method of melting fine particles containing carbon, capable of uniformly burning and melting the fine particles throughout the entire zone of the combustion flame. The apparatus includes a triple tube structure including an inner oxygen feeding section having an oxygen inlet tube provided with an oxygen feeding passage, a particle feeding section arranged surrounding the inner oxygen feeding section, comprising a particle inlet tube, a feeding tube and a feeding passage, and an outer oxygen feeding section arranged surrounding the particle feeding section, comprising an outer oxygen inlet tube, a feeding tube and a feeding passage. The front ends of the inner oxygen feeding tube, particle feeding tube and outer oxygen feeding tube constitute a nozzle which serves to inject the fine particles fed through the particle feeding tube together with air and/or oxygen flows respectively fed through the inner and outer oxygen feeding tubes to be burned and melted.

L'invention se rapporte à un appareil et à un procédé de fusion de fines particules contenant du carbone, cet appareil pouvant brûler et faire fondre uniformément les fines particules dans toute la zone de la flamme de combustion. L'appareil est constitué d'une structure à trois tubes comprenant une section interne d'amenée de l'oxygène comportant un tube d'admission pourvu d'un passage pour l'amenée de l'oxygène, une section d'amenée des particules entourant la section interne d'amenée de l'oxygène et comportant un tube d'admission des particules, un tube d'amenée et un passage d'amenée, et une section externe d'amenée de l'oxygène entourant la section d'amenée des particules et comportant un tube externe d'admission de l'oxygène, un tube d'amenée et un passage d'amenée. Les extrémités avant du tube interne d'amenée de l'oxygène, du tube d'amenée des particules et du tube externe d'amenée de l'oxygène constituent un ajutage qui sert à injecter les fines particules dans le tube d'amenée des particules, l'air et/ou l'oxygène amenés s'écoulant respectivement dans les tubes interne et externe d'amenée de l'oxygène où ces particules seront brûlées et fondues.

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