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The kraft process (also known as kraft pulping or sulfate process) is a process for conversion of wood into wood pulp, which consists of almost pure cellulose fibres, the main component of paper. The kraft process involves treatment of wood chips with a hot mixture of water, sodium hydroxide (NaOH), and sodium sulfide (Na 2 S), known as white ...
Canfor also owns a controlling share in Canfor Pulp Limited, which produces northern softwood kraft pulp and kraft paper in BC. [ 4 ] As of 2016, the company has an annual production capability of 5.9 billion board feet of lumber, 1.1 million tonnes of northern softwood market kraft pulp, approximately 220,000 tonnes of BCTMP and 140,000 tonnes ...
The mill has two kraft pulp lines and three paper machines. The mill produces 460,000 tonnes of kraft pulp and 565,000 tonnes of paper annually. The mill has 621 employees as of 2016. [1] Now owned by ND Paper LLC, a wholly owned subsidiary of Nine Dragons Paper Holdings Limited, the mill is now known as ND Paper–Rumford Mill.
This, along with the ability of the kraft process to accept a wider variety of types of wood and produce stronger fibers [4] made the kraft process the dominant pulping process starting in the 1940s. [3] Sulfite pulps now account for less than 10% of the total chemical pulp production [3] and the number of sulfite mills continues to decrease ...
A pulp mill in Rauma, Finland Woodchips for paper production. A pulp mill is a manufacturing facility that converts wood chips or other plant fiber sources into a thick fiber board which can be shipped to a paper mill for further processing. Pulp can be manufactured using mechanical, semi-chemical, or fully chemical methods (kraft and sulfite ...
Dissolving pulp is mainly produced chemically from pulpwood in a process that has a low yield (30 - 35% of the wood). This makes up of about 85 - 88% of the production. [2] Dissolving pulp is made from the sulfite process or the kraft process with an acid prehydrolysis step to remove hemicelluloses. For the highest quality, it should be derived ...
Mechanical pulping is the process in which wood is separated or defibrated mechanically into pulp for the paper industry.. The mechanical pulping processes use wood in the form of logs or chips that are mechanically processes, by grinding stones (from logs) or in refiners (from chips), to separate the fibers.
Domtar Corporation is a North American pulp and paper company that manufactures and markets wood fiber-based pulp and paper products. The company operates pulp mills and paper mills in Windsor, Quebec; Dryden, Ontario; Kamloops, British Columbia; Ashdown, Arkansas; Hawesville, Kentucky; Plymouth, North Carolina; Marlboro County, South Carolina; and Kingsport, Tennessee.