kraft mill造句

• Improvements include a C $ 120 million power boiler and a C $ 25 kraft mill upgrade, the company said.
• It is said that the technology can be used to exploit small regions of hardwood resource that could not support a modern sized kraft mill.
• Even in the 21st century, some small kraft mills remained ( producing at most a few tons of pulp per day ) that discharged all black liquor.
• Some kraft mills, particularly in North America, still recovered under 98 % of the black liquor in 2007, which can cause some environmental contamination, even when biologically treated.
• In 2009 the newsprint portion of the Thunder Bay plant was idled indefinitely leaving only one line of the kraft mill operating and forcing the layoffs of several hundred employees.
• By 2000, the better kraft mills recovered 99.5 % or more of the black liquor, and purified the remainder in biological treatment plants, reducing the environmental effect of the waste waters below the level of scientific significance, except perhaps in very small streams.
• The competing chemical pulping process, the sulfate or kraft process was developed by Carl F . Dahl in 1879 and the first kraft mill started ( in Sweden ) in 1890 . allowed kraft mills to recycle almost all of their pulping chemicals.
• The competing chemical pulping process, the sulfate or kraft process was developed by Carl F . Dahl in 1879 and the first kraft mill started ( in Sweden ) in 1890 . allowed kraft mills to recycle almost all of their pulping chemicals.