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ENGINEERS INDIA RESEARCH INSTITUTE
4/54, Roop Nagar, Delhi-110007 (India)
Phone: 9289151047, 9811437895, 9811151047
E-mail:
[email protected]
Website: www.eiriindia.org
SILICON FROM RICE HUSK
(PRODUCTION RATE – 30 TPD)
[EIRI/EDPR/4686] J.C.: 2903XL
Silicon is a metalloid, with the properties of both metals and non-metals. Its
greatest quality is probably its ability to conduct electricity, especially at high
temperatures.
Silicon is a chemical element. It is a hard, brittle crystalline solid with a blue-grey
metallic luster, and is a tetravalent metalloid and semiconductor.
It is relatively unreactive. Its oxides form a family of anions known as silicates. Its
melting and boiling points of 1414 °C and 3265 °C, respectively.
Silicon is the eighth most common element in the universe by mass, but very
rarely occurs as the pure element in the Earth's crust.
It is widely distributed in space in cosmic dusts, planetoids, and planets as
various forms of silicon dioxide (silica) or silicates.
Most silicon is used commercially without being separated, often with very little
processing of the natural minerals.