Milling Bead With Modified Surface Structure For Mass Transfer
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Solution Overview
Problem
Existing mechanochemical processes in milling devices face challenges in achieving efficient mass transfer due to limitations in the design of milling media, such as beads, which hinder uniform mixing and particle interaction.
Innovation Solution
The development of beads with a modified spherical surface structure, featuring recesses and protrusions, enhances the surface area and contact points, leading to improved mass transfer and mixing efficiency within the milling device.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a smooth spherical bead is used, then the manufacturing is simple and the bead structure is straightforward, but the mass transfer efficiency and mixing uniformity are insufficient
Solution Approach 1:
The bead surface is segmented into multiple recesses and protrusions distributed across the spherical structure. These surface features divide the continuous surface into distinct functional zones that enhance local mixing and mass transfer interactions during milling operations.
Solution Approach 2:
The bead surface is modified with localized recesses and protrusions that create non-uniform surface properties. These local structural variations increase surface area and contact points specifically at the bead surface, enhancing mass transfer and mixing efficiency without requiring complex internal structures.
2Productivity
If the bead surface area is increased, then the mass transfer and contact frequency are improved, but the bead manufacturing complexity increases
Solution Approach 1:
The bead maintains its overall spherical shape while incorporating surface modifications. The recesses and protrusions are designed with curved transitions that preserve the spherical geometry, allowing standard spherical bead manufacturing processes to be used while achieving enhanced surface area for improved mass transfer.
3Power
If the bead surface structure is modified with recesses and protrusions, then the contact frequency and kinetic energy generation are enhanced, but the bead structural complexity increases
Solution Approach 1:
The bead surface incorporates asymmetric recesses and protrusions that break the perfect spherical symmetry. These asymmetric surface features create more varied contact points and interaction modes during bead-bead and bead-material collisions, thereby enhancing kinetic energy generation and mixing efficiency.
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
The modified surface structure of the beads increases kinetic energy generation and contact frequency, resulting in enhanced mass transfer, uniform mixing, and improved outcomes in mechanochemical processes such as co-crystallization, allotrope conversion, and particle size reduction.
Implementation Method 1
The modified surface structure of the beads increases kinetic energy generation and contact frequency, resulting in enhanced mass transfer
Implementation Method 2
leading to improved mass transfer and mixing efficiency within the milling device
Data Source
Figure 1~5
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AI summary
The invention relates to a bead (1) for use in a milling device (20), the bead (1) having a general shape of a sphere and comprising a modified spherical surface structure (10), furthermore the invention relates to method for co-crystallization, to the method for allotrope conversion and to the method for particle size reduction, wherein said methods use said bead (1).