... metallurgy, chemical plant, cement plant for drying of limestone slag, coal powder, slag, clay stone. 1. The industry: Coal slime, coal ... clean coal, mixed clean coal etc.2. The construction industry: Blast furnace slag, clay, Peng Yun soil, lime stone, sand, quartz ... stone etc.3. Ore processing industry: Various metal concentrates, slag, tailings etc.4. Chemical industry: Non-drying heat sensitive ...