Patent ID: 7776133
Filing Date: 2010-08-17
Classification: C22B

Abstract:
1. A method for operating a non-ferrous metal smelting plant, wherein a flux mainly composed of silica ore and a non-ferrous metal-ore raw-material are charged into a smelting furnace via a conveying system, characterized in that said flux is conveyed and treated through a first system, in which the flux is crushed in a ball mill and dried in the ball mill while hot air is blown into the ball mill, and the crushed and dried flux is conveyed directly before the smelting furnace, while the non-ferrous metal-ore raw-material is treated and conveyed via a second system, in which the non-ferrous metal-ore raw material is dried with a drier and then conveyed directly before the smelting furnace, and subsequently the dried flux and the non-ferrous metal-ore raw-material are charged into the smelting furnace, thereby increasing the crushing amount of flux in the first system by means of hot air drying, and limiting the drying in the second system only to the non-ferrous metal ore raw material, and hence increasing the treating amount in the smelting furnace.