high efficiency gyratory screen machine for quartz
Industrial sand is defined as naturally occurring unconsolidated or poorly consolidated rock particles that pass through a 4.8 mm (4 mesh) sieve and are retained on a 74 pm (200 mesh) sieve.76 Industrial sands are often called silica sands and are composed primarily of quartz (Si02).77 The quartz content is typically greater 3-58
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