In the year of according to the characteristics of emissions in different production processes to promote the integrated ultra-low emission management and achieved good results; Zhongzhou Aluminum has carried ultra-low soot emission reformation to 4 kilns (for processed materials) to tackle the issue of flue gas with high soot concentration generation during the production of refined alumina, in which reformation of 3 kilns has been completed; Chalco Mining has built a denitration system in the calcination zone to realize ultra-low NOX emission.