Abstract:The working principle, technological process and main characteristics of pneumatic conveying technology are reviewed. The optimal application schemes for the pneumatic conveying of different bulk materials are put forward according to the particularity and complexity of bulk materials in the field of copper flash smelting. The optimal schemes can be used to reconstruct the bulk material conveying system of existing copper smelter, or used to design the pneumatic conveying system of bulk materials for the new copper smelting project.