A method and apparatus allow large volumes of gas (at least about 10% by volume) to be mixed into a cellulosic fiber suspension having a consistency of about 8-25%. The mixing of ozone containing gas into the suspension is particularly desirable. The suspension is passed into the inlet...http://www.google.com.au/patents/US5791778?utm_source=gb-gplus-sharePatent US5791778 - Method and apparatus for mixing gaseous chemical to fiber suspension
