What is BCTMP pulp used for?
Bleached Chemical Thermo-Mechanical Pulp (BCTMP) Softwood BCTMP is used for manufacturing products such as coated board grades, printing and writing paper and paper towel/napkin grades.
Who owns Meadow Lake Mechanical pulp?
Paper Excellence Canada
Meadow Lake Mechanical Pulp Inc. (MLMP) is one of ten pulp mills owned by Paper Excellence Canada (PEC).
Who owns the Prince Albert pulp mill?
(right) is one of eight Canadian pulp mills owned by Paper Excellence.
What is Bctmp mill?
Bleached Chemi-ThermoMechanical Pulp (BCTMP) is a pulp product used by the paper industry as a less-expensive alternative for Northern Bleached Softwood Kraft (NBSK).
Which hardwood fibers is easiest to bleach?
Hard Wood (Beech) Sulfite Pulp This hardwood has a very low lignin content and together with the aggressive nature of the pulping process, pulps of this type are easy to bleach and can produce a high brightness (>93% ISO) and cleanliness.
Is Prince Albert pulp mill opening?
“This fibre is critical to the restart of the Prince Albert pulp mill which is currently planned for the fall of 2023.” According to the company, it has been granted a softwood fibre allocation of just over one million cubic metres per year by the province.
What is TMP paper?
Thermo-mechanical pulping, or TMP, is a high-yield, energy- and resource-efficient technology for splitting larger wood chips into individual papermaking fibres.
What is the difference between chemical and mechanical pulping?
Mechanical pulping uses mostly mechanical energy to separate fibers and develop pulp properties. Chemical pulping uses mostly chemical energy, (from chemical reactions), to separate the fibers and to develop basic pulp properties.
Where is woodpulp made?
Wood pulp comes from hardwood and softwood trees. Hardwood trees, or “leaf trees” such as maple, elm, birch, etc., provide short and dense fibers that add strength to the paper. Softwood trees, or “needle trees” such as pine, spruce, cedar, etc., provide long and fluffy fibers that add bulk to the paper.
Is sodium chloride used to bleach wood pulp?
Bleaching of wood pulp is the chemical processing of wood pulp to lighten its color and whiten the pulp….Bleaching chemical pulps.
| Chemical or process used | Letter designation |
|---|---|
| Chlorine | C |
| Sodium hypochlorite | H |
| Chlorine dioxide | D |
| Extraction with sodium hydroxide | E |
Where is the largest paper mill in the world?
1. International Paper Company. International Paper Company is the world’s largest paper manufacturing company based in Memphis, Tennessee in the United States of America. The company is 123 years old as it was founded in 1898.
How many paper mills are in Ontario?
Pulp, paper and paperboard mills – 3221
| Province/territory | Employers | Non-employers / Indeterminate |
|---|---|---|
| Ontario | 28 | 17 |
| British Columbia | 21 | 6 |
| New Brunswick | 8 | 1 |
| Alberta | 7 | 1 |
What is a TMP mill?
How is groundwood pulp made?
Stone groundwood pulp (SGW) is produced by pressing the wood onto a rotating grinding stone. The grinding grits in the surface will penetrate into the surface of the wood and separate the fibers by a combination of compression, heating and shear.
Which pulping have higher yield?
mechanical pulping
The advantage of mechanical pulping is that it produces much higher yields than chemical pulping (90–95% of the wood ends up as usable pulp).
What are the two types of pulping?
The various mechanical pulping methods, such as groundwood (GW) and refiner mechanical pulping (RMP), physically tear the cellulose fibres one from another.
What country produces the most pulp and paper?
USA
Based on a comparison of 72 countries in 2020, USA ranked the highest in production of pulp for paper with 49,903,029 kt followed by Brazil and China. On the other end of the scale was Cuba with 100 kt, Myanmar with 1,000 kt and Algeria with 2,000 kt.
Where is most paper made?
The world’s three largest paper producing countries are China, the United States, and Japan. These three countries account for half of the world’s total paper production, which is over 400 million tons a year, while the leading paper importing and exporting countries are Germany and the United States.
What are the two most common bleaching agents?
The most common bleaching agents generally fall into two categories: chlorine and its related compounds (such as sodium hypochlorite) and the peroxygen bleaching agents, such as hydrogen peroxide and sodium perborate. Reducing bleaches represent another category.
When did Millar Western start using BCTMP?
When Millar Western opened its first BCTMP mill in Whitecourt, AB (Pulp & Paper Canada, October 1988), followed in 1992 with its mill in Meadow Lake, SK (Pulp & Paper Canada, October 1992), perceptions were changing. BCTMP was starting to be used in printing and writing grades as a substitute for more expensive kraft pulp.
What is BCTMP pulp?
Bleached Chemical Thermo-Mechanical Pulp (BCTMP) West Fraser has two BCTMP pulp mills with a total production capacity of 650,000 Metric Tonnes per year. The mechanical process applies heat, chemicals and a refining process to make BCTMP in a non-chlorine environment.
Why choose West Fraser BCTMP?
West Fraser has two BCTMP pulp mills with a total production capacity of 650,000 Metric Tonnes per year. The mechanical process applies heat, chemicals and a refining process to make BCTMP in a non-chlorine environment.
How has BCTMP evolved over time?
BCTMP has evolved into prime quality pulp that is used in myriad products. “In 1988 we never thought we would be in the grades of paper we are in now, from printing and writing grades to board,” commented Bob Leslie, Whitecourt’s mill manager. “As we can make better, more consistent pulps, papermakers can use them more readily.