What question did this study set out to answer?

The aim is to investigate methods for efficiently producing volcanic glass powder on a large scale.

February 22, 2026AIJ Journal of Technology and Design0 citationsOpen Access

A Study for Mass Production of Volcanic Glass Powder

TMTakuya MiyamuraEiken Chemical (Japan)ATAtsushi TOMOYOSEKyoto University KSKenichi SODEYAMA

Key Points

The aim is to investigate methods for efficiently producing volcanic glass powder on a large scale.
Expanded roller mill size from 15cm to 36cm
Conducted classification tests to determine optimal production rates
Performed lab tests to increase input efficiency to 200kg/h
Assessed product against JIS standards for quality compliance
Achieved a production rate of 12kg/h via cyclone classification
Identified 240kg/h as the optimal rate for effective production
Estimated potential to produce 0.4 million tons annually with 1-2 machines
Met surface area and activity index standards despite SiO2 and Los issues

Abstract

This study examines mass production of Volcanic Glass Powder (VGP). The roller mill’s table size expanded from 15cm to 36cm, falling short at 30kg/h despite a theoretical 44.5kg/h, needing optimization for efficiency. Classification tests found 240kg/h optimal, estimating 0.4 million tons annually with 1-2 machines. Lab tests increased input to 200kg/h, achieving 12kg/h via cyclone classification, indicating feasible production with smaller mills. JIS standards showed SiO2 and Los on ignition issues yet met surface area and activity index standards. This contributes to the establishment of efficient VGP production technology, highlighting potential for low-carbon society advancement.

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