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EP2443281A1 - Deinking process - Google Patents

The present invention provides a process for deinking printed waste paper comprising the steps of: a) converting the printed waste paper to an aqueous pulp slurry in a pulper, where ink is detached from paper pulp; b) subjecting the pulp slurry to flotation in order to remove hydrophobic contaminants including ink from the pulp slurry, said flotation being carried out in the presence of a ...

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(PDF) Roles of surfactants in flotation deinking

PDF | The role of surfactants in flotation deinking process used in recycling paper mills is discussed. Flotation deinking process involves three sub processes which include the detachment of the ...

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Deinking and Paper Recycling - Los Angeles

In addition, HP has engaged in ongoing deinking collaborations with Abitibi Bowater Inc., NewPage Corporation, Stora Enso, and UPM. The objective of these collaborations is to generate fundamental insight into the role of ink, paper, and the deinking process and conduct mill scale trials versus lab tests using significant quantities of HP prints.

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Deinking Pulping Process – AP&P Machinery

AP&P Deinking process and equipment has evolved over the last 20 years through both production and experimental testing. Our design objectives have been to reduce energy consumption, screen out a variety of waste components and to minimize the need for harsh chemicals that effect the fiber structure and brightness level.

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Flotation - ANDRITZ

Efficient deinking requires balancing two important considerations: increasing brightness as much as possible while at the same time retaining as many fibers as possible. The ANDRITZ SelectaFlot achieves this balance. SelectaFlot deinking is the result of decades of operating experience and is based on sound technology.

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Deinking — EDT

EDT's patented enzymatic deinking application for recovered fibers focuses on much more than just dirt spec reductions. EDT customizes an enzyme blend for each mill based on the wastepaper furnish being used, the mill's deink plant equipment and configuration, the key operating conditions, and the desired goals from the treatment.

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Cadel Deinking – Cadel Deinking

The Deinking Process. CADEL DEINKING has developed a unique process that removes printed ink from plastics before obtaining a recycled material.. This gives the product a high added value, because printed ink spoils the recycled product both visually and in its mechanical properties.

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The Recycling Process | DPDA

Paper recycling is a large scale, multi-step process with the objective to recover the paper fibers, and often other paper components such as mineral fillers, and use them as a raw material to produce new paper. Depending on the types of paper sourced for recycling and the final application, each recycling system is optimized accordingly.

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Deinking - The Full Wiki

Deinking is the industrial process of removing printing ink from paperfibers of recycled paper to make deinked pulp. The key in the deinking process is the ability to detach ink from the fibers. This is achieved by a combination of mechanical action and chemical means.

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Roles of Surfactants in Flotation Deinking

Roles of Surfactants in Flotation Deinking Yulin Zhao, Yulin Deng, and J.Y. Zhu INTRODUCTION Flotation deinking is a common practice for removing ink from wastepaper, and it is becoming a key process in many recycling paper mills. Flotation deinking was successfully introduced to the paper recycling industry in the 1980s, and

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Deinking… What Does It Mean to the Environment?

deinking process and conduct mill scale trials versus lab tests using significant quantities of HP prints. According to Miller, "Western Michigan University, working under the direction of NewPage Corporation, has completed a successful pilot-scale trial. This trial confirmed .

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Deinking - Wikipedia

Deinking is the industrial process of removing printing ink from paperfibers of recycled paper to make deinked pulp.. The key in the deinking process is the ability to detach ink from the fibers. This is achieved by a combination of mechanical action and chemical means.

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Flotation Deinking of Copy Paper - NC State College of ...

Flotation Deinking of Copy Paper ... Understand the basic process of flotation deinking. Background: The deinking of wastepaper includes several operations. These include pulping, screening, centrifugal cleaning, washing, flotation, bleaching and kneading. The focus of this lab will be the flotation process. In the flotation process, air is ...

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The enzymatic deinking of waste papers by engineered ...

In the waste paper recycling process, the printed ink in the paper needs to be removed by a deinking process. Deinking is mainly comprised of two general procedures, including the release of ink particles from the fibre surface using chemical or enzymatic methods, and the removal of released ink from the pulp slurry by washing or flotation ...

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Investigation of Recycled Paper Deinking Mechanisms

INVESTIGATION OF RECYCLED PAPER DEINKING MECHANISMS Veronika Husovska, Ph.D. Western Michigan University, 2013 The use of water-based inks is on the rise.

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Deinking and Recycling Technologies

Process of deinking • Sorting. A waste paper may be comprised of different paper types made of different paper fibres. Sorting helps in maintaining the pulp quality processed pulp can be of the same or lower quality than it was original. • Debaling. The bales are opened objects which are sorted out on the conveyor belt of the pulper.

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Recycle and deinking of waste paper - FOREST PRODUCTS ...

Progress 10/01/08 to 09/30/09 Outputs OUTPUTS: The major effort in recycle and deinking continues to be support for the US Postal Service. The current focus of the project is on accelerated aging tests for forever stamps, and the behavior of critical components of …

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Deinking | OLEON

The optimal choice of deinking chemicals always results from a compromise between the dictates of process conditions, the available processing equipment and the final properties of the deinked pulp. The choice of collectors depends to a large extent on operational temperature, on the pH of the pulp and on the water hardness. Foam Regulation

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Chemical Pulping - pulpandpaper-technology.com

Process of deinking • Sorting. A waste paper may be comprised of different paper types made of different paper fibres. Sorting helps in maintaining the pulp quality processed pulp can be of the same or lower quality than it was original. • Debaling. The bales are opened objects which are sorted out on the conveyor belt of the pulper.

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Froth flotation - Wikipedia

The process proved successful at their Central Block plant, Broken Hill that year. Significant in their "agitation froth flotation" process was the use of less than 1% oil and an agitation step that created small bubbles, which provided more surface to capture the metal and float into to a froth at the surface.

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Deinking systems - ANDRITZ GROUP

ANDRITZ deinking systems ... to storage, including sludge and reject treatment. Extensive system know-how, long experience in building all types of deinking plants, and a broad range of equipment are the basis for our leading position. ... The entire process chain is designed to improve pulp and paper quality – enhancing your margins and ...

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Startup presents patented plastic deinking technology ...

Both the deinking solution and the rinse water are reused in the system. Then, the plastics are dried, melted, extruded and pelletized. The deinking process allows reclaimers to use one degassing step, instead of two, Pineda said. One degassing step is still required because of residual humidity that remains on the washed fluff.

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Deinking - an overview | ScienceDirect Topics

Pratima Bajpai, in Pulp and Paper Industry, 2016. 9.3 Supply of Waste Heat from Other Process Areas to Deinking Plant. Deinking requires heat to increase process efficiency like the chemical pulping and papermaking processes. This starts with the repulping process, where the paper is defibered and ink is removed from the fiber surface.

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Google Patents - patents.google.com

[0051] The deinking process of the present invention includes first the step of converting the printed waste paper to an aqueous pulp slurry in a vessel that is commonly known in the art as a "pulper". Pulping is normally conducted under a specific set of conditions including …

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Paper Deinking Research Papers - Academia.edu

The deinking process includes a number of processes in succession dipending on the particle size of the ink particles liberated from the newsprint. Experimental studies have been conducted to evaluate different operating conditions, including temperature of liquid phase, concentration of solid in flotation, etc. The efficiency of the process is ...

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Pulp & Paper - Products - PT Lautan Luas Tbk.

Deinking is the industrial process of removing printing ink from paperfibers of recycled paper feed stock to make deinked pulp. Processes. The key in the deinking process is the ability to detach ink from the fibers. This is achieved by a combination of mechanical action and chemical means. The most common process is froth flotation deinking.

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Deinking: Wikis - The Full Wiki

Deinking is the industrial process of removing printing ink from paperfibers of recycled paper to make deinked pulp. The key in the deinking process is the ability to detach ink from the fibers. This is achieved by a combination of mechanical action and chemical means.

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Deinking - Kadant Inc.

MAK-C Deinking. Based on more than three decades of innovation and expertise in advanced flotation technology, the new Kadant MAK-C compact flotation cell offers maximum yield and efficiency.

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What Is Deinking? (with pictures)

Aug 18, 2019· Deinking is an industrial process that removes ink and adhesive material from recycled paper. A pulp washing process removes small particles of ink by rinsing with a mixture of water and dispersants, which are used to break down oils.

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Flotation Deinking Paper Recycling De-Inking Waste Paper

The pulping consisted of disintegration of the wastepaper structure and dispersion of the fibers. The disintegration was accomplished by conditioning 250 grams of wastepaper, under moderate agitation, with hot steam (84 to 90 °C), de-ionized water and reagent as desired. After disintegration the pulp was further dispersed in a high speed blender.

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