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8177071 |
Injector for flotation cell
An injector for a flotation cell, comprising a feed channel for feeding a fiber suspension flow to the flotation cell, a flow distribution element for distributing the fiber suspension flow fed to...
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8167133 |
Flotation cell
An injector of a flotation cell, the injector comprising a feed pipe for feeding a fiber suspension flow into the flotation cell, a mixing apparatus for mixing air into the fiber suspension flow...
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8157954 |
Method of recovering a base paper for gypsum board
There are provided a method of recovering a base paper for gypsum board for continuously and efficiently recovering a base paper for gypsum board from a waste material of gypsum board including a...
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8133351 |
Deinking a cellulosic substrate using magnesium hydroxide
A composition and method for deinking is disclosed. The composition and method contain an activated magnesium hydroxide or a magnesium hydroxide.
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8133350 |
Deinking a cellulosic substrate using magnesium silicate
A composition and method for deinking is disclosed. The composition and method contain an activated magnesium silicate or a magnesium silicate.
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8118171 |
Process and device for aerating suspensions
The disclosure relates to a process and device for aerating suspensions, particularly to flotate them, for example in deinking of pulp suspensions which includes a primary and secondary stage. In...
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8088254 |
Methods for producing recycled pulp, methods for modifying pulp fiber surfaces and dirts, as well as pulp processing equipments
Pulp processing equipment used to produce high-quality recycled pulp with little damage to fibers, high brightness and low residual ink by means of a force selectively acting on fiber surfaces...
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8052837 |
Deinking of waste paper
Waste paper is deinked by a composition which comprises a surfactant and a hydrophobic-based deinking component.
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8043473 |
Method of deinking recovered paper
The object of the present invention is to provide a process for producing deinked pulp from recovered paper containing stickies while preventing excessive reduction in the size of stickies,...
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7897010 |
Method for deinking pulp using premixed hydrophobically modified calcium carbonate particles
The present invention provides methods for deinking printed waste paper—particularly methods that use a deinking composition that includes a hydrophobically-modified inorganic particle (...
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7862685 |
Method for deinking pulp using premixed hydrophobically modified calcium carbonate particles
The present invention provides methods for deinking printed waste paper—particularly methods that use a deinking composition that includes a hydrophobically-modified inorganic particle (...
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7767057 |
Deinking blends for use in reduced alkali systems
The present invention relates to methods and compositions for deinking waste paper, optionally in non-alkaline or low-alkaline systems. Deinking compositions are provided that include a blend of an...
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7758719 |
Wet pulping system and method for producing cellulosic insulation with low ash content
Apparatus and method for recovering organic cellulosic fibers from landfill materials (such as post consumer, municipal and industrial waste materials). The apparatus and method selectively...
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7727355 |
Methods for producing recycled pulp and methods for modifying pulp fiber surfaces using liquid jet cavitation
The present invention aims to produce high-quality recycled pulp with little damage to fibers, high brightness and low residual ink by means of a force selectively acting on fiber surfaces during...
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7544271 |
Open flotation de-inking module for recycled paper
Disclosed is an open flotation de-inking module for recycled paper comprised of a flotation cell having an injector module and air control module used in conjunction to infuse micro air bubbles...
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7537674 |
Closed floatation de-inking module for recycled paper
Disclosed is a closed floatation conventional de-inking process adopted in the recycled paper processing plants, in which, ink separation and removal constitutes a major task. The specific concerns...
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7534322 |
Method of deinking recycled paper employing centrifigal cleaners
A method of deinking recycled cellulosic paper including the steps of developing a pulp containing paper fibers and bundles of paper fibers in a pulping liquid and an agglomerating agent,...
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7390378 |
Method of curling fiber and absorbent sheet containing same
A method of providing papermaking fibers with durable curl comprising: a) introducing papermaking fiber into a rotatable drum adapted for operation at elevated pressure; b) rotating the drum...
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7381305 |
Method and apparatus for monitoring liquid and solid contents in a froth
A method and apparatus are presented for determining the quantity of liquid and solid content in a removal stream of a froth created from a suspension that is generated during a froth flotation...
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7377993 |
Methods for reducing fluorescence in pulp and paper
Methods for reducing, and in some cases eliminating, fluorescence in pulp and paper, as well as the resulting articles, are provided. The methods destroy fluorescent activity of agents (e.g.,...
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7364642 |
Recycling of latex-containing broke
Methods for recycling latex-containing broke are generally provided. Specifically, mechanical treatment may be employed to rework latex-containing broke for reuse in various products without the...
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7318880 |
Method for defibring recycled fiber material in a drum pulper, and a drum pulper
The invention relates to a method for defibering recycled fiber material in a drum pulper provided with a substantially horizontal drum. Recycled fiber material and water are fed to the drum pulper...
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7306697 |
Used paper diaper processing method and used paper diaper processing device
The present invention provides a used paper diaper processing method comprising: a swell suppressing step for immersing a used paper diaper in a swell suppressant solution to suppress the swelling...
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7300539 |
Treatment of solid containing material derived from effluent
A method of treating solid containing material derived from effluent or sludge from a plant for deinking paper, the material containing calcium in the form of one or more insoluble calcium...
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7297224 |
Method of deinking waste paper using cellulase without lowering paper strength and method of evaluating the same
A deinking method using a cellulase which enables the load upon the environment to be reduced; and an evaluation method whereby a cellulase effective in deinking and the effective addition level of...
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7296682 |
Process for controlling operation of a flotation cell
A method for controlling operation of a flotation cell, where the liquid level and the foam level in the cell are measured and controlled. The method includes measuring at least one quality...
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7291247 |
Absorbent sheet made with papermaking fibers with durable curl
A process for bleaching high bulk cellulosic fiber and producing a durable elevated curl index includes: (a) concurrently bleaching, heat treating and convolving cellulosic fiber pulp at elevated...
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7282114 |
Method for processing pulp
The object of the invention is a method and a device for dispersing pulp, especially pulp containing waste paper, in which method ground pulp mass is fed between the blade surfaces (4) of a...
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7281631 |
Process for de-inking paper pulp and flotation cell used for this process
The cell includes an enclosure having, at the top, a main inlet for the pulp to be de-inked and, at the bottom, a main outlet for the de-inked pulp. The pulp from the top to the bottom, passes...
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7279073 |
Apparatus for liquid-based fiber separation
An apparatus for treating fibrous material is disclosed. The apparatus may include a fiber separator, a de-liquefier, a dry-to-wet blender and a flash dryer. The fiber separator may be a...
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7267231 |
Process and device for aerating suspensions
A process for aerating suspensions, particularly to flotate them, for example in deinking of pulp suspensions, with one or more stages and/or cells. Each stage/cell has its own separate liquid...
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7169257 |
Method of deinking waste paper using a reduced alkali system
The present invention relates to methods and compositions for deinking waste paper, optionally in non-alkaline or low-alkaline systems. Deinking compositions are provided that include a blend of an...
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7169263 |
Coarse dirt collector for removing coarse material from a pulper and corresponding method
The invention relates to a coarse dirt collector (7) for removing coarse material from a pulper (1). The coarse dirt collector (7) comprises a support arm (8) with a collecting basket (9). The...
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7163604 |
Production of fiber suspension from waste paper
A fiber suspension is produced from waste paper by first filling a pulper with a batch of the waste paper. The pulper is operated to partly defibrate the batch of waste paper substantially without...
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7138263 |
Endoglucanase enzyme NCE5 and cellulase preparations containing the same
There is provided an endoglucanase enzyme, which is useful for reducing fuzz of regenerated cellulose-containing fabrics, improving the touch and appearance, color clarification, localized...
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7074299 |
Process for using a phloroglucinol color delta to control blending, deinking and bleaching of groundwood-containing secondary pulp
A method of processing papermaking fiber includes characterizing the initial color of the pulp and the color of the pulp after treatment with a phloroglucinol stain. The color response of the pulp...
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7063770 |
Method of removing high density stickies from secondary papermaking fibers
A hybrid method for processing papermaking fibers to remove high density stickies typically includes utilizing a multistage array of forward cleaners coupled with a flotation cell which increases...
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6920983 |
Device for separating solids from liquids by means of flotation
The invention relates to a device for separating solids from liquids by means of flotation, particularly for separating impurities and ink particles from fibre suspensions, with several injectors...
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6911118 |
Pulper for producing paper pulp from waste paper
A pulper for producing paper pulp from waste paper containing undesired scrap particles includes a container (1) forming a chamber (4) defined by a bottom wall (5) and a cylindrical circumferential...
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6899790 |
Method of providing papermaking fibers with durable curl
A process for producing high bulk cellulosic fiber exhibiting a durable elevated curl index includes: (a) concurrently heat treating and convolving cellulosic fiber pulp at elevated temperature and...
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6881297 |
Process for aerating dispersions
A device and process for aerating dispersions, particularly for flotation of pulp suspensions, in a de-inking process where the pulp suspension containing dirt particles is sprayed into a tank...
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6841390 |
Method for sensing stickies
A real-time system and method for measuring stickies by separating high molecular weight non-fibrous species from low molecular weight non-fibrous species and sensing the concentration of the high...
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6830615 |
High surface area incineration product
The present invention relates to a high surface area product and its production from solid-containing material, such as waste effluent from a paper-treating plant. The high surface area product...
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6784146 |
Deinking method and composition for wastepaper
The present invention is a deinking method and composition that uses at least 50% by weight based on the total weight of surfactants of non-ionic, C16 to C25 aliphatic, monohydric alcohol...
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RE38317 |
Method and apparatus for treating filler-containing material, such as recycled fibers
Recycled fiber pulp from a vortex cleaning plant (e.g. connected to the short circulation of a paper machine) effects the recovery and return of fillers in the recycled fiber pulp discharged from...
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6605184 |
Method and apparatus for treatment of fiber suspension containing minerals, such as coated broke, in paper production
A method and apparatus treat fiber based material so as to reduce the loss of mineral fractions in the treatment of broke in paper production. Broke is a reusable raw material from a paper machine...
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6589389 |
Test method for determining bleed-throughs in old corrugated container fiber pulp
A test method for analyzing an OCC fiber pulp, to quantify the content therein of contaminants creating bleed-throughs in a paper product formed from the pulp. A sample of the pulp is formed into a...
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6585854 |
Device for aerating dispersions
A device and process for aerating dispersions, particularly for flotation of pulp suspensions, in a de-inking process where the pulp suspension containing dirt particles is sprayed into a tank...
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6548558 |
Contaminant dispersants useful in recycling of treated containers
Methods for controlling wax and other contaminants by improving the dispersion of these materials through the addition of contaminant dispersants to the process of recycling paper and paperboard...
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6517680 |
Method in connection with the production of paper or cardboard
Method for manufacturing paper or cardboard in one or more plies in order to achieve a paper or cardboard product with an even quality. The method comprises determining a fiber composition of a...
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