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WO/1995/027825A1 |
Disclosed is a preparation process of paper for increasing the contents of the inorganic fillers in the paper and enhancing Scott internal bond strength. Additional to a conventional preparation process of paper, as a cellulase type enzy...
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WO/1995/025199A1 |
An annular base (50) has radial breaker bars (38, 40) for transporting the high consistency stock from the flinger nut (24) section of the refiner (20) to the refining plates (28, 30). The radial breaker bars (38, 40) are curved so that ...
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WO/1995/024528A1 |
A disk (28) especially suitable for a papermaking wood chip and pulp refiner (20) has an array of refiner bars (50) which protrude outwardly from a base member (52). Grooves (56, 60) are formed between adjacent bars (50) which may change...
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WO/1995/022653A1 |
A refiner disc (28, 30) employing sharply tapered refiner bars (50, 62) wherein the upper portion (52, 64) of at least one side (58, 72) tapers inward at thirty to sixty degrees from the radial plane (34, 53). The tapered refiner bars te...
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WO/1995/021292A1 |
The present invention relates to a method of treating recycled fiber pulp by washing impurities like ash, ink and stickies therefrom. The method is characterized by the steps of spraying the recycled pulp onto a filter surface, removing ...
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WO/1995/021288A1 |
An apparatus for treating pulp with a treatment liquid, comprising a vessel (1) with a cylindrical wall (2), an internal straining member (3) for drawing off liquid from the pulp, together with a number of distribution pipes (5) on the o...
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WO/1995/020067A1 |
The invention relates to a diffuser (1), comprising a substantially cylindrical, vertical container (2), through which cellulose pulp is arranged to be transported, nozzle arms (6, 7) for delivering a fluid, such as washing liquid, to th...
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WO/1995/017243A1 |
A device for admixing a processing agent to a pulp suspension. The device comprises a cylindric lower portion (10) of a vessel with an agitator (11) fitted into the wall of said vessel portion, which agitator is intended to bring about a...
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WO/1995/017235A1 |
A process and apparatus for pumping a fluid mixture of a gas and a liquid and for separating said gas and liquid from each other, said apparatus having a fluid inlet (14) at one end (18) and at the opposite end (22) a pump housing (16) w...
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WO/1995/016819A1 |
A method is disclosed for the manufacture of screen cylinders, e.g. for removal of debris such as sand, rock, metal, resin etc. from a liquid suspension used in the pulp and paper industry. The screen is of the type having a plurality of...
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WO/1995/011337A1 |
The invention relates to a method and arrangement for removing gas from a fibre/liquid suspension in a fibre treatment line in a pulp mill, which line includes at least one stage in which the fibre/liquid suspension is treated and/or sto...
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WO/1995/011336A1 |
A rotary pulp screening device having a high efficiency. The screening device includes a rotor (30) having an upper paraboloidal segment (32) surrounded by a cylindrical baffle (42) to split the incoming flow of pulp stock in two unequal...
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WO/1995/009268A1 |
In a method for the conversion of a fibre suspension, and particularly for increasing the output of a dewatering apparatus especially for recycled fibre pulp, the reject from the dewatering apparatus is treated in a fractionator, where f...
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WO/1995/009270A1 |
A fractionator for fractioning a suspension in at least two fractions, including a drum (1) rotatable about a substantially horizontal axis and having axially spaced end walls (3, 4), a centrally arranged inlet (9) for suspension, a flow...
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WO/1995/006159A1 |
A method and a pressure screen for screening fibre suspension. In the method, fibre suspension is passed through two successive screening stages (A, B) provided in the same pressure screen so that accept from the first screening stage (A...
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WO/1995/006158A1 |
In an apparatus (10, 100, 300, 400) for refining a low consistency fibrous slurry, which includes a plurality of refining zones (38, 40; 188, 128; 324, 334; 411, 413) within a casing, the improvement comprises providing a unique discharg...
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WO/1995/006160A1 |
An apparatus for fractionating suspensions includes a tubular strainer (1) turnable about a horizontal axis, and spray means (5, 7) arranged to spray the suspension against the strainer. The strainer has at least two strainer sections (2...
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WO/1995/005248A1 |
A slotted cylindrical screen basket (10) for screening a slurry of papermaking stock is formed with axially extending slots (25) which are arranged so that terminal ends of slots or slot (25a, b, c) segments are not circumferentially ali...
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WO/1995/004189A1 |
The present invention relates to a method and an apparatus for treating of recycled fiber material or of the reject fraction discharged from the cleaner system of the short circulation of a paper machine for the recovery and return of th...
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WO/1995/003111A1 |
A sieve, in particular a sheet metal sieve for sorting suspensions of fibrous substances, has a plurality of hole-like sieving openings with an inflow and an outflow area. In the inflow area, the sieving openings are shaped as funnels th...
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WO/1995/000245A1 |
A refiner segment for disc refiners for desintegration of lignocellulose-containing material, where the refiner segment (1) is formed with a pattern of bars (2) and grooves (3), and where dams (4) are placed in the grooves. The dams (4) ...
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WO/1995/000702A1 |
Cellulosic pulps of selected fiber morphology are disclosed having a coarseness less than a threshold coarseness level. The threshold coarseness level is a function of average fiber length. The cellulosic pulps are especially useful for ...
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WO/1994/025183A1 |
Apparatus for screening a papermaking pulp or stock suspension through a stationary cylindrical screen (15) includes a rotating hydrofoil (35) which has a camber surface (56). The hydrofoil rotates with the camber surface in close proxim...
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WO/1994/023847A1 |
A screening means for a vessel for treating chips, having a screening body and a screw rotating therein. According to the invention the screening body has support rings (15) with radial recesses (16) to receive screening bars (8), the wi...
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WO/1994/023848A1 |
A hydrodynamic device for generating negative pressure excursions in a pulp slurry during fine screening, includes a plurality of half-foil members (123) disposed on a substantially cylindrical outer surface of a rotor (121). The rotor (...
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WO/1994/024365A1 |
The invention concerns an apparatus which is capable of performing a continuous, self-cleaning mode of operation for filtering and fractionation of suspensions containing fibres, fibre fragments, fines and other particles. For filtering ...
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WO/1994/019534A1 |
A system for dewatering/washing wood pulp and also for bleaching the same. Pulp from a digester is directed into a dewatering/washing apparatus (10) which comprises a high pressure vessel (12) in which there is a table assembly (24) havi...
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WO/1994/018387A1 |
A pressurized screen arrangement for screening lignocellulose-containing fiber material, comprising a screen housing (10) with a screen cage (11) and a rotor. Both ends of the screen cage (11) are arranged in first and, respectively, sec...
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WO/1994/017242A1 |
The separation of fibres from a fibre-containing water is performed by means of continuous flotation, in an apparatus (10) comprising a mantle (15) of circular cross section and means (12) for causing said fibre-containing water to rotat...
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WO/1994/016141A1 |
Arrangement in a pressure screen for separating impurities from a fibre suspension fed into the screen. The upper portion of the pressure screen comprises an upwardly tapering inlet chamber (6) into which the fibre suspension is fed thro...
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WO/1994/013880A1 |
An apparatus for filtering suspensions is provided with rotatable annular vertical discs (4) covered with filter material and partly submerged in the suspension to be filtered. Each disc is provided with a number of cells (22) for receiv...
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WO/1994/011109A1 |
An improved hydrocyclone and method of operating for centrifugal cleaning of pulp for papermaking wherein the hydrocyclone has a plurality of inserts (19a, 19b, 29a, 29b, 23a, 23b, 31a, 31b, 31c) each with openings of differents sizes fo...
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WO/1994/011080A1 |
A papermaking deaeration apparatus including a receiving chamber (14), and a plurality of cleaning and deaeration wings (16) extending therefrom. A baffle (40) is provided in the chamber of the receiver proximate the opening of each wing...
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WO/1994/010373A1 |
The pulp to be washed is fed between the rotating drum (1) and the pressing roll (2) inside it, so that pulp passes along a spiral-formed track around the pressing roll (2), being thereby pressed several times. Washing liquid (7) is fed ...
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WO/1994/009909A1 |
In a hydrocyclone plant for treating fibre suspensions comprising a multiplicity of hydrocyclone bodies (1) each hydrocyclone body is mounted in a hole in a wall (5) and is sealed to the wall with the aid of a sealing ring (18). Accordin...
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WO/1994/008088A1 |
Liquor removal from particulate solids such as wet wood pulp is achieved by applying a pneumatic or vapour pressure force through a pad of the wood pulp to compress the solids and to expel liquor from the solids. If air is used as a disp...
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WO/1994/005852A1 |
The present invention relates to a method and apparatus for treating pulp of cellulose and paper industry. The method and apparatus in accordance with the present invention are especially applicable for treating fiber suspension to be fe...
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WO/1994/001618A1 |
A hydrodynamic device for generating negative pressure excursions in a pulp slurry during fine screening, includes at least one half-foil member (123) disposed on a substantially cylindrical outer surface of a rotor (121). The rotor (121...
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WO/1994/000242A1 |
The present invention relates to a cyclone separator for separating substances from a fibre-liquid-suspension, particularly a paper clip suspension. The separator includes a main part (3) which has an inner, conical chamber (4) which is ...
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WO/1994/000634A1 |
A pressure sorter for the preparation of fibre suspensions obtained from waste paper, with a filter (38) surrounding a rotor (36), a feed chamber (54) between the rotor periphery and the filter and an accepts chamber (58) outside the fil...
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WO/1993/025752A1 |
A method of controlling the screening process at the screening of cellulose-containing pulp suspensions in a screening device (1) where ingoing pulp suspension (2) is divided by means of a screening member into an accept fraction (3) and...
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WO/1993/023135A1 |
The invention relates to a gas separation pump and to a process for separating gas from a liquid when pumping the same. The pump (10) has a hollow shell, forming a separation part (26) with a large separation surface and a smoothly conne...
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WO/1993/023609A1 |
The invention relates to a pressurized screen for the screening of fibre suspensions, having a screen plate cylinder (16) surrounded by a housing (12) and containing a rotor (14). In said rotor there are dilution water pipes (22) directl...
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WO/1993/023610A1 |
The invention relates to a centrifugal separator and a process for sorting a fibre suspension. Said centrifugal separator (10) comprises a rotor (24) coaxially inside a housing (12). The mantle of said rotor (24) has slots (26, 30) throu...
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WO/1993/023166A1 |
A disk refiner for refining fiber material. The refiner comprises two opposed refining disks (3, 4), at least one of which is rotary and supported on a rotary shaft (5). The shaft (5) is mounted in a stand (1) via a bearing housing (6) w...
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WO/1993/022028A1 |
A wire-type pulp washing machine includes an endless moving foraminous wire (12) which extends about a breast roll (14) defining an on-running end and a couch roll (15) defining an off-running end with a generally horizontal upper run of...
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WO/1993/022494A1 |
The present invention relates to an apparatus for treating fiber suspension. The apparatus in accordance with the present invention is especially suitable for screening pulps and also for thickening. More accurately, the apparatus relate...
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WO/1993/020941A1 |
A refining element for a disk refiner, which element is provided on its front side with working members (2) and is formed with through holes (4) for its attachment on a holder in the refiner. The refining element (1) further is provided ...
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WO/1993/019846A1 |
A device for indicating the refining gap (13) independently of wear, in a disk refiner (1) comprising a first and a second opposed refining disk (11, 12), which are rotary relative to each other, of which the first refining disk (11) is ...
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WO/1993/014860A1 |
The present invention relates to a process and a device for the separation and purification of gas from a fibre suspension, especially residual gas after ozone delignification or pulp suspension, wherein the suspension together with the ...
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