The first industrial pulp bleaching line including an ozone stage started 19 years ago. Today there are 22 mills worldwide using what is commonly named light-ECF bleaching. Among those 22 mills, 16 produce solely hardwood pulps, four produce both softwood and hardwood pulps while SCA in Ostrand (Sweden) and Rosenthal in Blankenstein (Germany) produce exclusively softwood pulp1. Thirteen mills started ozone bleaching in the early years of the 21 st century and three mills equipped two of their bleaching lines with ozone: Oji Paper in Tomioka (Japan), Fibria in Jacarei (Brazil) and ITC in Bhadrachalam (India). Fibria selected ozone bleaching in 2002 for Jacarei's new 2,500-tonne/day line C after having operated ozone bleaching as from 1995 on its 900-tonne/day line B. This decision clearly shows that ozone bleaching has met all requirements and expectations on line B for seven years.
展开▼
