2020-3-19 ensp 0183 ensp For this reason the sand used must be produced in a vertical shaft impact VSI crusher to meet the required standard Chung Kang had been operating two VSI crushers each with a power of 220kW These two machines produced 30 tonnes per hour of 0-5mm sand of a satisfactory quality but the cost per tonne was deemed unacceptable by the business...
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