explain serpecks method
Answers
Explanation:
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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Answer:
Baeyer's process: This method is mainly applied when ferric oxide is present as chief impurity. Serpeck's process: This process is used when silica is present in considerable amount of bauxide ore. ... We cannot compare these two processes as they are used for two different impurities.
This flow sheet is for Serpeck's process. This is process is used for the bauxite ore which contain silica impurity. The powdered bauxite ore is mixed with coke and heated at high temperature in the presence of nitrogen gas. Aluminium nitride ,carbon monoxide and water are formed.
The bauxite is purified by the Bayer Process. First the ore is mixed with a hot concentrated solution of sodium hydroxide. The NaOH will dissolve the oxides of aluminum and silicon but not other impurities such as iron oxides, which remains insoluble. The insoluble materials are removed by filtration.
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