• essay: "retention & drainage chemicals," m. hubbe

    Essay: "Retention & Drainage Chemicals," M. Hubbe

    The letters "R and D," when you hear them in a paper mill, may have little to do with the R&D department. Yes, even papermakers eventually benefit from research and development, but their immediate focus is more likely to be retention and drainage. These two words can speak volumes about how a paper machine is running and whether the operation

  • retention and drainage aids solenis

    Retention and Drainage Aids Solenis

    To efficiently produce a quality sheet of paper, a papermaker must precisely balance retention, drainage and formation. To help papermakers achieve and maintain this critical balance, Solenis provides one of the broadest offerings of retention aids and drainage aids in the industry, including proprietary microparticles, uniquely formulated polymers and advanced charge control agents.

  • retention, drainage & clarification technology

    RETENTION, DRAINAGE & CLARIFICATION TECHNOLOGY

    to your papermaking RETENTION, DRAINAGE & CLARIFICATION TECHNOLOGY Solenis is dedicated to helping pulp and paper mills operate more efficiently and profitably. We offer a state-of-the-art product portfolio that addresses nearly every aspect of papermaking. Our highly skilled team of field sales representatives, applications engineers,

  • retention, drainage and formation aids for paper

    Retention, Drainage And Formation Aids For Paper

    Aries offers a comprehensive line of retention, drainage and formation aids for paper making to help papermakers balance wet end performance. We help businesses keep costs under control, eliminates waste, improve the quality of the paper and reduce environmental impact.

  • retention and formation in papermaking sveacon

    Retention and Formation in Papermaking Sveacon

    RETENTION AND FORMATION IN PAPERMAKING logging barking sieving chipping cooking washing bleaching straining wet pressing drying calendering Dr Boris Zhmud, Sveacon Consulting Surface Chemistry General Chemistry Colloid&Surface Science Papermaking Technology Genealogical Tree of the Wet End Chemistry Hydrodynamics Mechanics sveacon.se Drainage is: The process of

  • us4798653a retention and drainage aid for papermaking

    US4798653A Retention and drainage aid for papermaking

    A papermaking stock comprising cellulose fibers in an aqueous medium at a concentration of preferably about 50% by weight of the total solids in the stock including a retention and dewatering aid comprising a two component combination of an anionic polyacrylamide and a cationic colloidal silicia sol. The stock exhibits enhanced resistance to shear forces during the papermaking process.

  • retention and drainage aid in papermaking balaji chem

    Retention and Drainage Aid in Papermaking Balaji Chem

    2019-08-28· Need for Retention and Drainage Agents in Paper making Process. In the filtration process during paper making, the paper machine wire cloth is used as a continuous filter that filters the solids from the ready pulp solution, but some fine particles drain out with the water and create so many troubles in the paper formation process.

  • microsol℠ advanced retention and drainage solutions

    MicroSol℠ Advanced Retention and Drainage Solutions

    2019-07-17· MicroSol℠ advanced retention and drainage solutions help producers of graphic and specialty papers optimize retention, drainage and formation —

  • retention aids nc state university

    Retention Aids Nc State University

    Function: To maintain adequate efficiency, drainage, and cleanliness of a paper machine; to achieve adequate Z-directional uniformity; to retain additives, including fillers. Strategies for Use: Retention aids can have a profound effect on the efficiency of the process and on the quality of the product. For instance, an overdose of retention

  • papermaking quadra chemicals

    Papermaking Quadra Chemicals

    With many sources of starches, Quadra offers solutions to improve strength, reduce linting and assist the retention and drainage program. Results are optimum brightness, superior strength, and enhanced paper machine performance.

  • us5098520a papermaking process with improved

    US5098520A Papermaking process with improved

    A papermaking process includes the steps of adding to the papermaking celllulosic slurry first a high molecular weight cationic polymer and then a medium weight anionic polymer. The cationic polymer is added after the addition of filler, but before at least one of the shear stages to which the slurry is subjected prior to sheet formation and drainage.

  • the retention and drainage behavior of cross-linked

    The retention and drainage behavior of cross-linked

    "The retention and drainage behavior of cross-linked gelatin with glutaraldehyde in a papermaking system," BioRes. 11(3), 6162-6173. Abstract A type of novel retention aid, cross-linked gelatin, was prepared using low-grade industrial gelatin as the raw material

  • retention aid pulp paper mill

    Retention Aid pulp paper mill

    2012-11-14· Function of retention aids The best retention of fine particles and colloids in the papermaking process normally occurs when the zeta potential is near to zero and retention aid doing that. The main functions of retention aid are following:-Accelerate drainage, hence increased machine speed; Improved retention of fines and fillers

  • correlating retention and drainage in papermaking

    CORRELATING RETENTION AND DRAINAGE IN PAPERMAKING

    CORRELATING RETENTION AND DRAINAGE IN PAPERMAKING WITH FLOCCULATION: EFFECT OF POLYELECTROLYTE BRANCHING E. Antunes, F. A. P. Garcia, P. Ferreira and M.G. Rasteiro* Research Centre for Chemical Processes Engineering and Forest Products, Chemical Engineering Department, Coimbra University, Pólo II, Pinhal de Marrocos, 3030-290 Coimbra, Portugal

  • the retention- and drainage-aid behavior of quaternary

    The retention- and drainage-aid behavior of quaternary

    2007-04-05· The retention-aid and drainage-aid performance depended strongly on the DS and molecular weight of quaternary chitosan: The great improvement of the retention-aid and drainage-aid was achieved as charged density of quaternary chitosan was high; The optimum retention dosage was decreased with the decreasing of the molecular weight of quaternary

  • how retention and drainage chemicals impact

    How Retention and Drainage Chemicals Impact

    Retention and drainage chemicals are used to optimize fiber retention and water drainage. Papermakers definitely conduct research for development. But, the letters are used to describe two other important terms called “Retention” and “Drainage”. These words describe a lot about the operation quality, performance, and profitability of running papermaking machines.

  • flocculation, retention and drainage in papermaking: a

    Flocculation, retention and drainage in papermaking: a

    2007-04-01· Ash retention is a reliable relative representation of minerals retention (CaCO3 in this case). The conditions of the experiments were such that the results of pulp flocculation measured by FBRM, drainage and retention for the BKP fibre suspensions could be compared. RESULTS AND DISCUSSION Evaluation of Fibre and Filler Flocculation

  • retention aid polymer interactions with cellulosic

    RETENTION AID POLYMER INTERACTIONS WITH CELLULOSIC

    “Retention aid interactions, 850-906. 850 RETENTION AID POLYMER INTERACTIONS WITH CELLULOSIC SURFACES AND SUSPENSIONS: A REVIEW Martin A. Hubbe,a* Hiroki Nanko, and Michelyn R. McNeal b Retention aids can be defined as very-high-mass, water-soluble polymers that are added to cellulosic fiber slurries before the formation of paper in order to improve the efficiency with

  • retention aid, flocculant, retention agent, flocculent

    retention aid, flocculant, retention agent, flocculent

    Retention Aid. OPL Floc Flocculant / Retention Aid. OPL Floc (Retention Aid) Product Overview. OPL Floc flocculants designed for papermaking, are formulated low molecular weight polymeric chemicals which increase retention and drainage on wire, improve over-all efficiency and reduce the solid load going into the effluent.

  • papermaking science and technology book series

    Papermaking Science and Technology Book Series

    TAPPI currently partners with the Forest Products Engineers based in Finland.As part of our partnership, we offer the Papermaking Science and Technology book series featuring 20 volumes that cover the entire paper manufacturing process from wood raw material to end product.

  • retention and drainage in the manufacture of paper

    Retention and drainage in the manufacture of paper

    2015-01-13· It is also observed that the use of the associative polymer as a retention and drainage aid has an impact on the performance of other additives in the papermaking system. Improved retention and/or drainage can have both a direct and indirect impact. A direct impact refers to the retention and drainage aid acting to retain the additive. An

  • papermaking quadra chemicals

    Papermaking Quadra Chemicals

    With many sources of starches, Quadra offers solutions to improve strength, reduce linting and assist the retention and drainage program. Results are optimum brightness, superior strength, and enhanced paper machine performance.

  • retention and drainage aids finor piplaj chemicals

    Retention and Drainage Aids Finor Piplaj Chemicals

    RETENTION AND DRAINAGE AIDS. We offer Retention and Drainage aids aimed at obtaining higher First Pass Retention (FPR) of fiber, First Pass Ash Retention (FPAR) levels and better water drainage while maintaining good machine run ability and lowering steam demand for drying.

  • retention aids / coagulants / fixing agents| paper

    Retention Aids / Coagulants / Fixing Agents| Paper

    Retention Aids. Retention aids improve drainage and increase retention of fine particles. They function as both productivity aids and product improvement since they increase speed and increase fines retention. They improve the clarity of the waste water and greatly reduce the negative environmental impact of water reuse. Retention Aids RD Series

  • the retention and drainage behavior of cross-linked

    The retention and drainage behavior of cross-linked

    "The retention and drainage behavior of cross-linked gelatin with glutaraldehyde in a papermaking system," BioRes. 11(3), 6162-6173. Abstract A type of novel retention aid, cross-linked gelatin, was prepared using low-grade industrial gelatin as the raw material

  • c3500 series papermaking retention and drainage aid

    C3500 series papermaking retention and drainage aid

    C3500 series papermaking retention and drainage aid Detailed Introduction C3500 series of papermaking auxiliary agent C3500 series polyacrylamide emulsion papermaking auxiliary agent is a new type of papermaking additives by Weihai Jinyu Environmental Protection Technology Co. Ltd. is the exclusive research and development production, the quality of the products reached the world

  • retention and drainage aid in papermaking : u

    Retention and Drainage Aid in Papermaking : u

    The u/chemsolutionsbalaji community on Reddit. Reddit gives you the best of the internet in one place.

  • handbook of pulping and papermaking sciencedirect

    Handbook of Pulping and Papermaking ScienceDirect

    Knowledge of wet end chemistry helps predict retention of additives, drainage during papermaking, and the level of sizing of the final paper. Stock is the mixture of pulp, fillers, other papermaking materials, and water. The combination of all of the materials used to make paper is called furnish. Broke consists of paper trimmings and waste, paper not up to specification, and other paper that

  • the retention- and drainage-aid behavior of quaternary

    The retention- and drainage-aid behavior of quaternary

    2007-04-05· The retention-aid and drainage-aid performance depended strongly on the DS and molecular weight of quaternary chitosan: The great improvement of the retention-aid and drainage-aid was achieved as charged density of quaternary chitosan was high; The optimum retention dosage was decreased with the decreasing of the molecular weight of quaternary

  • papermaking process, history, & facts britannica

    papermaking Process, History, & Facts Britannica

    Papermaking, formation of a matted or felted sheet, usually of cellulose fibers, from water suspension on a wire screen. Paper is the basic material used for written communication and the dissemination of information. In addition, paper and paperboard provide materials for hundreds of

  • retention aids / coagulants / fixing agents| paper

    Retention Aids / Coagulants / Fixing Agents| Paper

    Retention Aids. Retention aids improve drainage and increase retention of fine particles. They function as both productivity aids and product improvement since they increase speed and increase fines retention. They improve the clarity of the waste water and greatly reduce the negative environmental impact of water reuse. Retention Aids RD Series

  • the retention- and drainage-aid behavior of quaternary

    The retention- and drainage-aid behavior of quaternary

    The retention- and drainage-aid behavior of quaternary chitosan in papermaking system. Author links open overlay panel Huang Chi a Houbin Li b

  • flocculation, retention and drainage in papermaking: a

    Flocculation, Retention and Drainage in Papermaking: A

    Fibre and filler flocculation, filler retention and drainage, induced by several polymeric retention aids, were compared in laboratory experiments on mixtures of kraft fibres and two calcium carbonat...

  • papermaking process with improved drainage

    Papermaking process with improved drainage

    1993-11-30· The invention provides a method for improving the retention of mineral fillers and cellulose fibers on a cellulosic fiber sheet. The method comprising the steps of preparing a cellulose pulp slurry; adding before a shearing step an effective amount of a copolymer flocculant to the cellulose pulp slurry, the copolymer flocculant is a high molecular weight cationic copolymer of acrylamide and

  • the retention- and drainage-aid behavior of deepdyve

    The retention- and drainage-aid behavior of DeepDyve

    2007-04-05· Read "The retention- and drainage-aid behavior of quaternary chitosan in papermaking system, Colloids and Surfaces A: Physicochemical and Engineering Aspects" on DeepDyve, the largest online rental service for scholarly research with thousands of academic publications available at

  • managing retention, drainage and formation. free

    Managing retention, drainage and formation. Free

    2004-06-01· Retention, drainage, and formation are almost always critical to good papermaking, but usually are opposed to each other in their control. How do papermakers and technical engineers control retention, drainage, and formation to optimize all three without harming any one of the three?

  • preparation and performance of cationic spherical

    Preparation and Performance of Cationic Spherical

    A link to the use of this system as a model for retention and drainage aid in the papermaking process was described. Dynamic drainage experiment indicated that the shortest drainage time was 23.2s when the percentage of the aid was 0.04%(wt). The retention effect of the aid was tested that the highest of the first-pass retention was 70.89% when

  • factors influencing the drainage and drying of pulp

    Factors Influencing the Drainage and Drying of Pulp

    Water Retention Value, 2000). Developing an understanding of the factors that affect pulp drainage at laboratory scale could prove useful in understanding and improving drainage on a commercial paper machine. This literature review will discuss drying in the paper-making process and the need for improved drainage to save energy. The fibre and

  • fundamental strategy for control of retention and drainage

    FUNDAMENTAL STRATEGY FOR CONTROL OF RETENTION AND DRAINAGE

    high molecular weight retention aid addition rate is adjusted if a change in retention is necessary to achieve a targeted uniform retention level. A retention value that correlates with first-pass retention can be derived with the M/K and Chemtronics retention meters. 138 / TAPPI Proceedings. The adjustment of drainage rates and couch

  • retention and drainage aid in papermaking : u

    Retention and Drainage Aid in Papermaking : u

    The u/chemsolutionsbalaji community on Reddit. Reddit gives you the best of the internet in one place.

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