Patent ID: 8919670
Filing Date: 2014-12-30
Classification: C21B,C21C

Abstract:
1. A swirl portion of a fuel injection lance for an ore-smelting furnace, the swirl portion comprising: a cylindrical body portion, a top surface, a bottom surface, an outer surface, and a hollow interior cylinder extending through the body portion along a center axis; and a plurality of vertical channels and a plurality of helical channels formed within the body portion; each of the vertical channels entering the body portion at the top surface at a radial distance intermediate the interior cylinder and the outer surface, and traversing the body portion vertically to the outer surface adjacent the bottom surface; each of the helical channels traversing the outer surface between the top surface and the bottom surface in a helical pattern, each of the vertical channels intersecting with a corresponding one of the helical channels adjacent the bottom surface at a predetermined angle selected to provide a desired particle distribution of a fuel injected into the furnace.