Fly Ash Particle Size Analysis with Drying and Uniform Dispersion
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Solution Overview
Problem
Existing methods for analyzing fly ash particle size distribution and specific surface area are inaccurate and inefficient due to issues with sample dispersion and agglomeration, requiring high-cost equipment and sensitive environmental conditions.
Innovation Solution
A method and system that includes full drying and dispersion of fly ash samples using ultrasonic or airflow dispersers, combined with laser and image analysis, and data processing through cumulative distribution curves to enhance accuracy and automation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If laser particle size analysis method is used, then measurement accuracy is improved, but device cost increases and sample pretreatment complexity increases
Solution Approach 1:
The patent applies preliminary action by implementing comprehensive sample pretreatment including drying at 105-110°C for 1-2 hours and dispersion treatment using ultrasonic or airflow dispersers before measurement. This preliminary preparation ensures particles are properly separated and dried, which is critical for accurate laser particle size analysis while reducing measurement errors
Solution Approach 2:
The patent uses dispersing media (water or alcohol) as intermediaries to facilitate particle separation and suspension. The dispersers create a medium that allows particles to be uniformly distributed during measurement, improving accuracy while enabling the use of standardized laser analysis equipment
2Ease of operation
If screening method is used for particle size analysis, then operation simplicity is improved, but measurement accuracy deteriorates for fine-grained materials
Solution Approach 1:
The patent replaces the mechanical screening system with a laser-based optical measurement system. Instead of using physical sieves and manual screening operations, the system uses laser scattering principles to non-contactively measure particle sizes, maintaining operational simplicity while dramatically improving measurement accuracy for fine-grained fly ash materials
3Adaptability or versatility
If sedimentation method is used, then applicability to fine particles is improved, but result stability and reproducibility deteriorate
Solution Approach 1:
The patent replaces the sedimentation method's gravity-based mechanical separation with a laser scattering-based optical measurement system. This substitution eliminates the sensitivity to environmental conditions and liquid medium requirements that plague sedimentation methods, providing stable and reproducible results while maintaining the ability to analyze fine particles
Solution Approach 2:
The patent changes the measurement parameter from settling velocity (sedimentation method) to laser scattering intensity distribution. This parameter change fundamentally improves reliability by using an optical property that is insensitive to environmental variations, while still capturing the particle size information needed for fine-grained materials
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
Improves measurement accuracy and efficiency by ensuring uniform dispersion, reducing errors, and providing reliable data for industrial applications.
Implementation Method 1
Laser particle size analysis method measures particle size distribution of particles by laser scattering principle
Implementation Method 2
performing dispersion treatment on a dried fly ash sample by using an ultrasonic disperser or an airflow disperser
Implementation Method 3
performing dispersion treatment on a dried fly ash sample by using an ultrasonic disperser or an airflow disperser
Data Source
AI summary
A method and a system for analyzing the particle size of fly ash are provided. The method includes performing drying treatment on the sample to ensure that the water content is lower than 0.5%; uniformly dispersing the particles by using ultrasonic wave or airflow dispersion technology; measuring the particle size by laser particle size analyzer to generate cumulative distribution curve; calculating the median particle size and specific surface area by cumulative distribution curve. The system of the disclosure has an automatic operation function, and may automatically complete sample treatment, particle size measurement, data analysis and result output. This method improves the accuracy of measurement and data processing, and is suitable for efficient analysis of a large number of samples, which has a wide industrial application prospect.