Grades of Silicon Carbide

Prices (2006). Silicon carbide is priced from 1150 to 1700 US /tonne. 

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For applications that require a particularly high grade of silicon carbide, such as industrial ceramics, the refractory industry, and ceramic-bound abrasives, the granular product must be washed with alkali or acid to remove adhering traces of elemental silicon, metals, metal compounds, graphite, dust, and silica. 

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