Method for adjusting the supply of a reaction gas to be fed...

Details Method for adjusting the supply of a reaction gas to be fed... Method for adjusting the supply of a reaction gas to be fed...

F - Mech Eng,Light,Heat,Weapons

27

D

F27D 3/16 (2006.01) F27D 99/00 (2010.01) F27B 3/20 (2006.01) F27D 23/00 (2006.01)

Patent

CA 2097003

The invention relates to a method and an apparatus for feeding a reaction gas, such as oxygen or oxygen-enriched air to a flash smelting furnace through a concentrate burner, so that the gas is fed around a pulverous material distribution channel located in the middle of the burner. Oxygen or oxygen-enriched air is fed into the reaction shaft through tubular channels in several separate gas jets, whereby the discharge velocity of the gas jets can be adjusted. The gas velocity is adjusted by an adjusting member which selectively covers a portion of the ends of the distribution tubes to restrict the total cross-sectional area of the gas flow.

La présente invention se rapporte à une méthode et à une installation servant à introduire un gaz de réaction tel de l'oxygène ou de l'air enrichi d'oxygène à l'intérieur d'un four de grillage éclair par l'intermédiaire d'un brûleur de concentré, de telle sorte que le gaz est introduit autour d'un conduit assurant la distribution des matières pulvérulentes situé au centre du brûleur. L'oxygène pur ou l'air enrichi d'oxygène est acheminé par une tubulure et injecté dans la zone de réaction sous forme de jets multiples dont la vélocité est réglable. La vélocité du gaz est réglée par un dispositif qui recouvre sélectivement une portion de l'extrémité des tubes pour en réduire la surface de section transversale et restreindre l'écoulement gazeux.

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