Environmental Solutions for Medium to Large Scale Sand and Gravel Dual Supply Operations

EPC Supply of Sand Production Using Environmentally Friendly Limestone Aggregate Limestone Production Line Project Overview This solution is an environmentally friendly limestone sand and aggregate co-production line with a capacity of 800–1,200 metric tons per hour. It employs a process consisting of primary crushing with a PCZ1820 heavy-duty hammer crusher, closed-circuit sand production with a ZSJ1218 twin-rotor sand-making and shaping machine, and fine grading using a multi-stage KZ vibrating screen. It produces four types of finished products: 1–3 mm and 1–2 mm aggregates, high-quality manufactured sand, and limestone powder, catering to medium- to large-scale green mines that supply both sand and aggregates. Key Challenges: Traditional sand-making lines fail to thoroughly separate fine sand from stone powder; the mixing of stone powder with manufactured sand results in excessive powder content in the sand, leading to high rejection rates at ready-mix concrete plants. There is o…

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