Application of GGBS in China
and produced ideally with the state of the art equipment Vertical Roller Mill (VRM). Compared with GGBS produced by ball mills Figure 2 shows the number of slag grinding plants set up in China over the last decade. Between 1997 when the 1 st VRM GGBS plant was set up at Baosteel, Shanghai and the end of 2007, the number of operating slag grinding plants has increased from 1 to a