From the FASC website....it may be new to the website also???
Glass
Though already recycled in large quantities, the value of recycled glass is generally low and the costs of transportation can make recycling uneconomical.
Glass fragments introduced to the KDS system in pieces 2” in diameter, or less, are ground at the rate of 1 - 1.5 tons per hour into a fine powder. The powder is smooth and fine to the touch, without sharp edges. The maximum particle size is about 150 microns and about half of the powder is below 45 microns.
Even finer particle sizes have been achieved with the KDS system at lower feed rates. In one such test, 18 % of the glass powder, i.e., 200 lb/hr of output had a particle size of less than 1 micron. The grinding energy required was only 200 kW hr/ton. No other grinder can produce sub-micron glass powder in such large quantities while consuming so little energy. Such fine glass powder can command high prices as an industrial feedstock.
Darwin