kraft pulp variety

  • Pulp | Market | Ecolab

    A Eucalyptus market pulp producer had seen a steadily increasing alkali charge requirement to produce pulp at target kappa levels due to the variety of species that were being utilized in the. Read more

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  • PROJECT TITLE: Fundamental Investigations of ClO2 ...

    Despite these significant advances in pulping technology, very little is known about how changes in the kraft pulping process can influence residual lignin structure. To address this issue, several researchers have begun to characterize the nature of residual lignin in kraft pulps.19,20,21,22,23,24

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  • EnduraFiber™ Market Pulp - Bright and clean pulp fiber

    Making it easy is a part of this pulp's fiber. Produced predominantly from loblolly pine, EnduraFiber™ Market Pulp provides an outstanding level of brightness and cleanliness while also offering high tear and breaking length capabilities.

  • NBSK | West Fraser

    Northern Bleached Softwood Kraft (NBSK) West Fraser produces Northern Bleached Softwood Kraft pulp. Chemical pulp combines woodchips and chemicals into what is called a digester. The chemical process in the digester breaks down the lignin in .

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  • Dryden Mill | Domtar

    Located in Northwestern Ontario, Canada, Domtar's Dryden Mill produces Northern Bleached Softwood Kraft pulp suitable for a variety of uses. The Google Map is not avaible for the moment. Contacts. Dryden Mill PO Box 3001,1 Duke St. Dryden, ON P8N 2Z7 CANADA. 807-223-2323 ...

  • Unbleached Softwood Pulp | Canfor

    Unbleached Kraft (UBK) pulp especially designed for use in application requiring high tensile unbleached fibre and fibre cement products. The Prince George Mill produces UBE / UBK pulp from a mixture of softwood species (white spruce and lodgepole pine) indigenous .

  • Understanding the Chemical Recovery Processes in Pulp ...

    Other reasons for the dominance of the kraft process include its ability to handle a wide variety of wood species and the superior strength of its pulp. The production of kraft and soda paper products from wood can be divided into three process areas: Pulping of wood chips; Chemical recovery; Product forming (includes bleaching)

  • Products & Applications | West Fraser

    Northern Bleached Softwood Kraft (NBSK) is produced at the Hinton Pulp and Cariboo Pulp & Paper mills. NBSK is used by paper manufacturers to produce a variety of paper products, including printing and writing papers and tissues. Cariboo Pulp & Paper is a .

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  • NBSK | West Fraser

    Northern Bleached Softwood Kraft (NBSK) West Fraser produces Northern Bleached Softwood Kraft pulp. Chemical pulp combines woodchips and chemicals into what is called a digester. The chemical process in the digester breaks down the lignin in .

  • PROCESS OPTIMIZATION IN KRAFT PULPING, .

    PROCESS OPTIMIZATION IN KRAFT PULPING, BLEACHING, AND BEATING OF Leucaena diversifolia Manuel Javier Feria,a,* Juan Carlos García,a Antonio Pérez,a José Lívio Gomide,b Jorge Luiz Colodette,b and Francisco López a A variety of the Leucaena genus, Leucaena diversifolia, was used for pulp and paper making by kraft and refining processes and a ...

  • Lecture 2 Pulping And Bleaching - NPTEL

    LECTURE 2 PULPING AND BLEACHING Paper industry uses wide variety raw materials employing different type of pulping and bleaching processes depending on the type of raw materials and requirement of pulp furnish for final paper making. Both unbleached and bleached pulp is produced to meet the requirement of paper.

  • Kraft Process - an overview | ScienceDirect Topics

    Kraft pulping is an alkaline process wherein lignin is removed by the action of sodium hydroxide and sodium sulfide. The pulping digester operates at about 175 °C for 2–5 h. Kraft pulping has replaced the older soda process, in which sodium hydroxide was the primary pulping chemical.

  • Kraft and Modified Kraft Pulping of Bamboo (Phyllostachys ...

    Kraft and modified kraft pulping of bamboo (Phyllostachys bambusoides) 81 chips were screened [SCAN-CM 40:94], air-dried, and stored at a dry solids content of 92%.

  • Paper Manufacturing: Kraft (Sulfate) Pulping | In-Line ...

    The two main types of chemical pulping are the more common sulfate pulping (most commonly known as Kraft pulping) and sulfite pulping. Kraft pulping accommodates a variety of tree species, recovers and reuses all pulping chemicals, and creates a paper with a higher sheet strength.

  • Pulping Courses

    At a kraft pulp mill, evaporators are used to remove water from the used pulping chemical solution in order to concentrate it. This is the first step in the process that is used to recover the chemicals so that they can be reused in the pulping process.

  • GRADES (TYPES) OF PULP - Paperonweb

    Aspen kraft pulp can be used in a variety of printing grades and is specifically useful where a higher brightness is required. Its high smoothness characteristics are particularly suited for coated papers to be gravure printed. Typical properties of Aspen hardwood kraft pulp fiber. Fiber Length: 1.0-1.3 mm

  • Products - Dissolving Pulp - Specialty Cellulose in Bahia ...

    In Bahia, Bracell produces special soluble cellulose from wood with high alpha rates and a purity of more than 98.5%. The company manufactures two basic types of special cellulose: dissolving pulp (rayon-grades) and special specialty cellulose (specialty-grades).

  • Sulfite process - Wikipedia

    A special grade of bleached sulfite pulp is known as dissolving pulp which is the raw material for a wide variety of cellulose derivatives, for example rayon, cellophane, cellulose acetate and methylcellulose.. Rayon is a reconstituted cellulose fiber used to make many fabrics.. Cellophane is a clear reconstituted cellulose film used in wrapping and windows in envelopes.

  • Howe Sound Pulp and Paper produces five distinctive kraft pulp varieties. Each variety has been carefully formulated to match papermakers' needs for strength, cleanliness, and brightness. Howe Sound's cedar kraft pulp blends are the preferred product of manufacturers looking for a light, fine, soft and smooth tissue fibre with excellent wet ...

  • Overview of Wood Pulp - Numera Analytics

    Kraft pulping was developed only a few years after, but would only became popular in the 1940s when the recovery boiler was developed, allowing kraft pulp mills to recycle nearly all their pulping chemicals. Sulphite market pulp still remains today, but is only a fraction of the size of the kraft pulp market.

  • Paper Products Glossary

    The term "kraft" is commonly used interchangeable with "sulfate" and is derived from a German word which means "strong." Market pulp: Wood, cotton, or other pulp produced for, and sold on, the open market, as opposed to that which is produced for internal .

  • CHAPTER II Pulp, Paper, and Fiber Products

    Pulp, Paper, and Fiber Products Summary and Conclusions ... of wood, for the kraft chemical pulping proc-ess, to about 1.05 tons for thermomechanical pulping. With this reduction, it is estimated ... Wood pulp is converted into a variety of pa-per products (table23). The major uses of pa-

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  • Kraft Pulping of Industrial Wood Waste

    The kraft pulping process can better handle the wide variety of species and provide a pulp of satisfactory properties. The main objective of this study was to verify the suitability of industrial wood waste for kraft pulping and to establish the response of the kraft pulp to conventional elemental chlorine-free bleaching chemicals. The mechanical

  • Hardwood pulps | UPM Pulp

    Our bleached hardwood kraft pulp (BHKP) range offers the best of the north and the south. Nordic birch and eucalyptus from Uruguay provide you with a variety of fibre characteristics. Take advantage of our experience in using hardwood pulp ourselves.

  • Kraft Pulp Mill Compliance Assessment Guide (CAA, CWA ...

    Kraft Pulp Mills:! Particulate Matter! Ozone (Emissions of VOC and NO x)! SO 2 Overview Kraft pulp mills are subject to a variety of different requirements under the Clean Air Act (CAA), and state and local laws. These requirements are designed to limit emissions of several different air pollutants. Most of those requirements will apply

  • Dryden Mill | Domtar

    Located in Northwestern Ontario, Canada, Domtar's Dryden Mill produces Northern Bleached Softwood Kraft pulp suitable for a variety of uses. The Google Map is not avaible for the moment. Contacts. Dryden Mill PO Box 3001,1 Duke St. Dryden, ON P8N 2Z7 CANADA. 807-223-2323 ...

    [PDF]
  • Hardwood pulps | UPM Pulp

    Our bleached hardwood kraft pulp (BHKP) range offers the best of the north and the south. Nordic birch and eucalyptus from Uruguay provide you with a variety of fibre characteristics. Take advantage of our experience in using hardwood pulp ourselves.

    [PDF]
  • Unbleached Softwood Pulp | Canfor

    Unbleached Kraft (UBK) pulp especially designed for use in application requiring high tensile unbleached fibre and fibre cement products. The Prince George Mill produces UBE / UBK pulp from a mixture of softwood species (white spruce and lodgepole pine) indigenous .

    [PDF]
  • Kraft Process - an overview | ScienceDirect Topics

    Kraft Pulping. Globally, kraft process is the dominant technology of paper and pulp industry. Approximately 130 million t of kraft pulp is generated annually. In kraft process, the wood chips are pretreated at 170°C for about 2 h in an aqueous solution of sodium hydroxide and sodium sulfide.

  • Kraft Paper Industry - Investment Project Opportunity for ...

    Kraft paper or Kraft is paper produced from chemical pulp produced in the kraft process. Kraft paper is ideal for a variety of packaging uses. The market is well established in North America and western countries, and it is expected to grow linearly over the forecast period. Growing economies such as .

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