Abstract
Rice husk generated during rice cultivation is generally used as an alternative source for fuel. Rice husk provides a vital natural source for silica. It mostly constitutes SiO2 as the major product along with oxides such as Al2O3, Fe2O3, CaO, MgO etc. As the major constituent, the predominance of silica primarily depends on the types of soil on which the grain is generated. The availability of various mineral and metal oxides in the soil sources are responsible for constituting the rice husk. In the present study an attempt has been made to collect rice husk released from the rice grain cultivated in different types of soil. The study includes the analysis and comparison of various physical composition and mineralogical texture changes for different rice husk samples generated from various soils. Also trial has been made to optimize and identify a particular type of rice husk that can be utilized adequately for the generation of metallurgical grade silica.
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