How aluminum is extracted from bauxite by hall and serpek method
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Serpek's method is used for the purification of bauxite if it contains excess amount of silica (SiO2).
DETAILS OF THE PROCESS: The powdered bauxite is mixed with carbon and heated up to 1800oC and a current of nitrogen is passed, aluminum nitride is obtained. Silica is converted in to silicon (Si).
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