rice destoner mainly used to separate the heavy impurities such as stone, mud etc from rice, wheat, and other grains. It can remove alongside stones from unprocessed grain or rice. It is especially suitable for removing alongside stones from white rice. Equipped with dual vibrating motors, it features high productivity, stable operation and performance, low noise etc.
MG-Si was alloyed with iron and solidified under different cooling rates in order to grow pure Si dendrites from the alloy. The Si dendrites were then separated using a gravity-based method. The separation method relies on the significantly different densities of Si and FeSi2, and it uses a heavy liquid with specific gravity between the two phases to float the light Si particles to the surface of the liquid, while the heavy iron silicide sinks.
The effects of the particle size and cooling rate on the yield and separation efficiency of the Si phase were investigated by quantifying the fraction of Si in the sinks and floats. The results demonstrate that the crushing size of the particles prior to separation should be approximately the same as the width of the dendrites in order to maximize the separation efficiency while simultaneously lowering the grinding cost.
A hand-or pedal-operated blower may be used with a cleaning capacity of 250 kg/hour. Alternatively, an engine-powered fan is used and can simultaneously perform both operations: grading and cleaning. The latter such as paddy cleaner is expensive but has the advantages of being faster and requiring less labour (particularly women's labour).