Micronization Device With Opposing Supersonic Cyclones
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current micronization technologies, such as pin mills, tribomechanical activation, and jet milling, face limitations including high energy consumption, noise, overheating, and the need for pre-milling, which increase costs and reduce efficiency in processing larger particle sizes effectively.
Innovation Solution
A micronization device with a cylindrical grinding chamber lacking moving parts, utilizing supersonic carrier medium nozzles to create opposing cyclones for intense frontal collisions, allowing for the micronization of larger particles without overheating or significant noise, and featuring ejectors for accelerating material to supersonic speeds for efficient particle size reduction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If pin mill technology is used for micronization, then fine grinding performance is improved, but device heating and particle sticking to walls occur
Solution Approach 1:
The patent replaces the traditional mechanical pin mill grinding system with a jet mill system that uses compressed air jets to accelerate particles for collision-based size reduction. This substitution eliminates direct mechanical contact between grinding pins and material, thereby preventing device heating and particle sticking while achieving fine grinding through kinetic energy transfer and particle-particle collisions
2Manufacturing precision
If tribomechanical activation with high rotor speeds is used, then particle size reduction is improved, but energy consumption and noise levels increase significantly
Solution Approach 1:
The patent replaces high-speed rotating mechanical rotors with stationary jet nozzles that use compressed air to accelerate particles. This substitution eliminates the need for high-speed mechanical rotation, dramatically reducing energy consumption and noise levels while achieving effective particle size reduction through controlled particle collisions in the jet flow field
3Manufacturing precision
If conventional micronization methods are used, then particle size is reduced, but pre-milling is required which increases processing costs
Solution Approach 1:
The patent incorporates a pre-crushing chamber that performs initial size reduction on feed material before it enters the jet mill grinding chamber. This preliminary action breaks down large particles into smaller fragments that can be efficiently micronized in the subsequent jet mill stage, eliminating the need for separate pre-milling operations and reducing overall process complexity and cost
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 device efficiently micronizes particles up to 4 mm in a single cycle without temperature increase or significant noise, achieving particle sizes of 38.5 µm to 113.8 µm, suitable for various industrial applications, including pharmaceuticals and construction materials.
Implementation Method 1
the carrier medium supplied through said means produces at least two artificial cyclones in the grinding chamber, the cyclones rotating simultaneously, at supersonic speeds and in opposite directions
Implementation Method 2
supplying the carrier medium into the grinding chamber at a supersonic speed
Implementation Method 3
the ground material is supplied into the grinding chamber at a supersonic speed
Implementation Method 4
the ground material is micronized by multiple frontal collisions of the particles of the material in the flow of the at least two artificial cyclones
Data Source
Figure 1
Figure 2
Figure 3
AI summary
The present invention relates to a micronization device comprising a cylindrical grinding chamber (30) without moving parts, means (4, 6) for supplying the ground material into the grinding chamber (30) at a supersonic speed, and means (331, 332, 333, 341, 342, 343) for supplying the carrier medium into the grinding chamber (30) at a supersonic speed, wherein said means are arranged so that the carrier medium supplied through said means (331, 332, 333, 341, 342, 343) creates at least two artificial cyclones in the grinding chamber (30), the at least two artificial cyclones rotating at supersonic speeds and in opposite directions, with a common axis of rotation, the common axis of rotation being identical with the central axis of the grinding chamber (30). The present invention further relates to a micronization method using the micronization device described above.