Dry Deinking Processing Device Using Fine Particle Collision
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Solution Overview
Problem
Existing methods for recycling paper struggle to efficiently remove ink from the deep layers of paper sheets, requiring prolonged processing times and incomplete ink removal due to the limitations of blast materials not reaching ink in the sheet's thickness direction.
Innovation Solution
A processing device that supplies particles with adsorption or collision capabilities to remove coloring materials from fiber-containing materials during fibrillation, utilizing particles with Mohs' hardness between 2 and 5, which can adsorb or collide with ink to separate and remove it efficiently, and a particle removal system that separates fibers from particles, allowing for quick ink removal without immersing the paper in water.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If blast material is ejected to the recording layer of a used recording medium in sheet state, then the recording layer can be removed, but the blast material cannot reach ink present in the deep side in the thickness direction, resulting in insufficient ink removal
Solution Approach 1:
The invention changes the physical state parameter of the recording medium from sheet state to tub state, and changes the particle size parameter of the blast material to fine particles (1-100 micrometers). These parameter changes enable the blast material to penetrate deep into the ink layers, achieving complete ink removal without requiring prolonged processing time.
2Productivity
If blast material is ejected in sheet state, then processing can be performed, but it takes a long time to remove the ink completely
Solution Approach 1:
The invention transforms the recording medium into a tub state and uses fine blast material particles (1-100 micrometers), which dramatically increases the penetration depth and removal efficiency. This enables rapid and complete ink removal, simultaneously improving both productivity and manufacturing precision.
Solution Approach 2:
The invention segments the blast material into fine particles (1-100 micrometers), which can individually penetrate and attack ink particles deep within the recording medium. This segmentation increases the surface area and penetration capability of the blast material, enabling fast and complete ink removal.
3Manufacturing precision
If conventional blast material is used, then processing is simple, but the blast material cannot reach deep ink layers in the thickness direction
Solution Approach 1:
The invention changes the particle size parameter of the blast material to fine particles (1-100 micrometers) and transforms the recording medium into a tub state. These parameter changes enable deep penetration into ink layers without increasing device complexity, as the same ejection system can handle the fine particles.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enables rapid and effective deinking of paper, facilitating the recycling of paper without the need for water-based processes, resulting in a dry deinking technique that produces high-quality recycled sheets.
Implementation Method 1
the particles have a function of adsorbing the coloring materials contained in the fiber containing materials from the fibers
Implementation Method 2
the particles have a function of colliding with the coloring materials contained in the fiber containing materials to separate the coloring materials from the fibers
Data Source
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AI summary
A processing device has a fibrillation portion fibrillating fiber containing materials containing fibers in the air, a particle supply portion supplying particles having Mohs' hardness of 2 or more and 5 or less to the fiber containing materials during or after fibrillation for collision, and a particle removal portion removing the particles from the fiber containing materials to which the particles are supplied.