... equipment in China. Our main products are vertical dryer,rotary drum dryer, briquetting machine, curhser, etc. All of them are ... and furnace.Countercurrent operation, high thermal efficiency, fast drying speed. Small exist concentration, just for 10g/m3.Rely on ... efficiencyLarge intensity of drying, little dustWorking principle of vertical coal dryerThe molded balls which contain much moisture are ...