If
gyratory vibrating screen is made from stainless steel, it could screening sugar material very well.
Compare the other vibrating model screen equipment, the gyratory vibrating screen main feature is that low frequency and large stroke on one almost horizontal plane, it could make sure that mesh aperture size is much more near to the size of sugar that you need, the screening precision will be much higher.
Then compare the linear vibration model screener, the gyratory model screen will be larger capacity than same mesh area linear vibrating screener.