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economic environmental granite system sand production line for sale in Antwerpen

Foundry processes: the recovery of green moulding sands. Jun 01, 2003· 1. Introduction. Cast iron foundries create a large quantity of wastes: one-quarter to one ton of solid waste per one ton of casting (), 30–60% of which is made up of core and moulding sands.The recovery and reuse of wastes is the alternative with the lowest impact and leads to a saving of raw materials and a reduction ...

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