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WO/2006/061464A1 |
A screen and a method for screening pulp. The screen (1) comprises a body (2), a screen cylinder (3) arranged inside the body for screening the pulp, and an accept chamber (13) and an accept aggregate (14) connected with it for removing ...
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WO/2006/054937A1 |
A system and a method for treating a fibrous suspension, which is cleaned in a screening room comprising a plurality of cleaning stages and with a last cleaning stage, in which the cleaning takes place at low fiber concentration, and whe...
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WO/2006/053944A1 |
The present invention relates to a degassing centrifugal apparatus (10), such as a degassing centrifugal pump (10) for use in a pulp- or papermaking process. The degassing centrifugal apparatus (10) according to the present invention com...
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WO/2006/045378A1 |
The invention relates to a method for supplying a fibrous suspension (S) to a headbox (1) of a paper or cardboard machine (2) or to a filter device. The fibrous suspension (S) can, for example, be formed by mixing a thick matter suspensi...
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WO/2006/043162A2 |
The invention relates to a crushing element for mills, mixtures and worms used, preferably, for grinding and treating paper pulp and plastic materials containing ceramic fillings and other fibrous materials such as raw lignite, beet chip...
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WO/2006/042906A1 |
The present invention relates to a method for improving the efficiency of gas removal wherein gas-enriched process liquid (2) is introduced tangentially into a vertical essentially cylindrical vessel (1) and thereafter removed at the bot...
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WO/2006/033605A1 |
Process and device to manufacture and dewater cellulose pulps in which defibered cellulose is screened to remove shives, fractionated in to at least three fractions (10, 3, 12), which fractions are treated each by itself and then are bro...
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WO/2006/032427A1 |
The invention relates to a method and to a device which is used to fraction aqueous paper fibre suspensions (S). Relatively large centrifugal forces are used, also in suspension components having essentially the same densities, in order ...
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WO/2006/008332A2 |
The present invention relates to a method of manufacturing a screen cylinder, and a screen cylinder that is particularly suitable for screening, filtering, fractionating, or sorting cellulose pulp suspensions of the pulp and paper making...
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WO/2006/000642A1 |
A pulp digester includes a vessel having an inlet, an outlet and a wall extending between the inlet and the outlet, the wall of the vessel having a curved interior surface. The digester includes a screen assembly positioned inside the ve...
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WO/2005/124020A1 |
The present invention provides, according to a first aspect a method for manufacturing paper or paperboard, wherein the a) the pulp is treated with CMC or a derivative thereof or an amphoteric CMC derivative, thereby forming a stock , b)...
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WO/2005/106110A1 |
A method of producing hardwood pulp is provided. This method comprises treating hardwood chips with one or more than one Family 11 xylanase enzyme in the absence of adding an oxidizing enzyme for about 5 minutes to about 120 minutes, to ...
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WO/2005/106114A1 |
Thermomechanical pulp is an important process for producing fibrous mass used in papermaking. A two-level control strategy that stabilizes and optimizes the refining process has been developed. The Stabilization layer consists of a multi...
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WO/2005/099554A2 |
A wireless dual zone pulp washer with rotating concentric filters for creating centrifugal force against feedstock in order to expel liquid contained in the feedstock before further processing of the stock. A secondary filter surrounds t...
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WO/2005/098127A1 |
The invention concerns a method and a device for the dilution of dewatered cellulose pulp that maintains a consistency of 20-30% of greater. By shredding of the pulp to a finely divided dry granulate, dilution to a homogeneous consistenc...
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WO/2005/088007A1 |
For monitoring and controlling a papermaking process, the amount and quality of gas present in the process is measured, and the process is controlled based on the information obtained. The content of one or more gases present in the proc...
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WO/2005/070550A1 |
A refining element intended for refiners of disc-type for working fibrous material, where the refining element (10) is provided with a pattern of bars (13, 14) and intermediate grooves, and the refining element (10) is divided into an in...
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WO/2005/061783A1 |
The method is used to grind a suspension of paper fibers (S). Said suspension is ground predominantly as a result of pressure forces between two grinding surfaces (1,2) which are located on grinding tools which are pressed against each o...
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WO/2005/061781A1 |
A device and a method for withdrawing cellulose pulp with a pulp concentration of 8-14 % from a cylindrical storage tower (101) with a plane bottom and with a diameter that exceeds 3 meters. A pipe (102) is arranged through the wall of t...
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WO/2005/058502A1 |
The invention relates to a disc mill having two substantially parallel grinding discs (2, 3) that are configured as annular discs having a center passage (4) and that have opposite working surfaces (9, 10). These working surfaces are spa...
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WO/2005/056914A2 |
The invention relates to a device (1) for treating a fibrous substance for producing paper that, in addition to fibers, contains at least water and filling material, in particular, a secondary filler material. The device comprises: a fir...
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WO/2005/054573A1 |
A screening apparatus for screening pulp suspensions comprises a housing (2), a screen basket (8) having a tubular mantle wall with screen apertures, the mantle wall dividing the interior of the housing into a central chamber (10) and an...
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WO/2005/054475A1 |
A novel endoglucanase derived from Staphylotrichum coccosporum; polynucleotide coding for the endoglucanase; and cellulase preparations containing the endoglucanase. The above endoglucanase or cellulase preparations are useful in a deter...
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WO/2005/046879A1 |
The present invention relates to a method of monitoring a liquid fluid mixture and a system carrying out the method. The invention also relates to the use of the system for monitoring liquid fluid mixtures. The method of monitoring a liq...
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WO/2005/045128A1 |
A screening apparatus for screening pulp suspensions comprises a screen basket (8), a rotor (26) for providing pressure and suction pulses in the suspension to be screened along the screen basket, and a dilution liquid header (28) for su...
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WO/2005/042832A1 |
A method and an apparatus for estimating an optimal dosage of bleaching agent to be used in a process for producing pulp of a required brightness value involve a set of wood chip properties characterizing the wood chips as estimated by a...
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WO/2005/028745A1 |
A thickener for concentration of a fibre pulp suspension, comprises a rotatable screen member (4) having screen passages dimensioned for separating the fibre suspension into a first fraction that passes through the screen member and subs...
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WO/2005/021865A1 |
The present invention relates to a method and apparatus for feeding chemical into a liquid flow. The method and apparatus according to the invention are especially suitable for applications where very small volumes of chemical must be fe...
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WO/2005/019528A1 |
The invention relates to a method for refining paper or cellulose fibres in an aqueous suspension. According to the invention, a refining region is formed between the inner wall of a rotating refining drum, e.g. a refining cylinder (1), ...
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WO/2005/019529A1 |
A method for manufacturing a screen cylinder and a screen cylinder with screen wires (2) in the axial direction of the screen cylinder (1) set at predefined intervals into a cylindrical screen surface and fastened to support rods (3), an...
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WO2005002817B1 |
The invention relates to a method for producing a fibrous material used in the manufacture of moulded parts, according to which a binding agent is added to the fibrous material, which is then compressed to form a moulded part with the ad...
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WO/2005/017253A1 |
A method and a device for separating material flows from aqueous suspensions containing pulp fibers or other fine particles formed in the paper or pulp manufacturing process, in which the aqueous suspension is led into a separation tank ...
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WO/2005/010274A1 |
A sclereid concentrator is an apparatus designed to concentrate sclereids found in pulp. The sclereid concentrator is based around a mini-hydrocyclone (1). When a slush pulp sample is passed through the mini-hydrocyclone, practically all...
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WO/2005/005716A1 |
The present invention relates to a method and arrangement for treating pulp. The method and arrangement according to the invention are suitable for use in production of chemical pulp in situations, where gas must be separated from the pu...
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WO/2005/003450A1 |
A fiber/biodegradable resin composite material having high rigidity and high strength can be produced by dispersing a fiber component in a resin component finely and uniformly by a general-purpose kneading means without pretreatment of t...
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WO/2004/110628A1 |
A refining surface for a refiner intended for defibrating lignocellulose-containing material, the refiner comprising at least two refining surfaces (1, 2) arranged coaxially relative to each other, at least one of which rotates around a ...
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WO/2004/111331A2 |
An improvement to a mechanical refining system relates to an apparatus including three or more actuators (100) coupled to a stator (42) of the refining system, and a controller for independently operating the actuators. An improved metho...
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WO/2004/109276A1 |
A method and system for determining trace oversize contaminant particles in a paper-making pulp employs a screen assembly having a screen housing with a screen mounted therein, and ports for introduction of aqueous pulp and rinsing and f...
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WO/2004/109010A1 |
The invention relates to a method for the manufacture of a multilayer paper or board web containing recycled fiber. The method comprises forming the multilayer web of at least two layers having stock compositions different from each othe...
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WO/2004/106632A1 |
A refiner steam separation system according to the present invention includes a blowline for transporting a mixture of fiber material from a refiner to an inlet of a steam separator. Waste steam is discharged from the separator through a...
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WO/2004/103567A1 |
Refining element intended for refiners of disc-type for working fibrous material, where the refining element (10) is formed with a pattern of bars (11) with upper surfaces (13) and side surfaces (14) and intermediate grooves (12). A plur...
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WO/2004/101889A2 |
Methods for reducing energy required for a pulp refining processes by treating a mechanical pulp with a hemicellulase composition are presented. The enzymatic treatment can be carried out at a temperature of from about 10 degree C to abo...
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WO/2004/097106A1 |
The content of ray cells in cellulose pulp causes problems and therefore these ray cells should be removed from the cellulose pulp to improve the pulp quality. The present invention makes this possible and comprises a method wherein at f...
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WO/2004/097107A1 |
The invention relates to an arrangement for gas removal including a vertical cylindrical vessel (1) having an outlet (8) and a tangentially arranged inlet (6). The inlet includes means which bring an incoming fluid (4) into a jet which i...
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WO/2004/085070A1 |
A sensor device for measuring distance between a stator and a rotor in a machine is of the magnetic type and is intended to be mounted in the stator in order to interact with an opposing surface on the rotor. A sensor body (10) can be mo...
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WO/2004/078355A1 |
A refiner plate (10) for wood chips and pulp fiber having bars (12) defining grooves (14) and partial dams (16) in the grooves. Each bar comprises a set of overlapping bar elements defining an end face that acts as a partial dam of pulp ...
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WO/2004/078314A1 |
DNT washer belt comprising a length of fabric and at least one edge guide (8), the edge guide and the fabric (16) being joined together whereby the edge guide extends into the longitudinal direction of said fabric and forms a protruding ...
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WO/2004/076739A1 |
A method for controlling a process to produce refiner pulp, where the method is controlled with a multivariable control algorithm, where at same time two or more of the following quantities are used as control variables; a) mass flow of ...
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WO/2004/076740A2 |
Paper pulp is added to a stain solution. The stain solution and pulp fibers are mixed to form a slurry. Samples are removed from the slurry and are admixed with dilution water and a bleach. Then, the fibers are moved into a flow cell (20...
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WO/2004/072365A1 |
The invention relates to an apparatus in the treatment of the stock passed to a headbox of a paper machine or equivalent, in which the apparatus includes at least two stock chests (10a1, 10a2). The stock (M1) from a first stock chest (10...
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