cases
Located in Chile, this project covers the concentrate dewatering and tailings iron recovery systems of a 480 t/d copper-iron processing plant. The client procured the main crushing, grinding and flotation equipment locally, while Xinhai Mining supplied the thickening, filtration and magnetic separation equipment and provided the construction drawing design and on-site installation guidance for the dewatering and magnetic separation circuits.
Construction Drawing Design and Equipment Interface: Xinhai completed the construction drawing design for the concentrate dewatering workshop, tailings iron recovery section, tailings dewatering section, concentrate thickener and tailings thickener, covering water supply and drainage, electrical power, civil works and general layout. The design was based on the flowsheet and test parameters confirmed with the client, so that the Xinhai-supplied dewatering and magnetic separation systems interfaced precisely with the client's self-purchased crushing, grinding and flotation equipment.
Copper Concentrate Dewatering: Flotation concentrate is pumped to the concentrate thickener for pre-thickening and then to a filter press for final dewatering, discharging the copper concentrate as a handleable solid product for storage and transport.
Iron Recovery from Flotation Tailings: Flotation tailings are pumped to the magnetic separation system, where two stages of magnetic separation followed by one concentrating stage recover the iron minerals and discharge the final magnetic tailings, thereby recovering iron resources contained in the flotation tailings.
Iron Concentrate Dewatering: The magnetic concentrate is dewatered by a disc filter to produce the final iron concentrate product.
Tailings Dewatering and Water Recycling: Magnetic tailings are pumped to the tailings thickener and then to a filter press for final dewatering, allowing dry discharge of the plant tailings. Together with the concentrate dewatering system, the circuit enables water recycling throughout the dewatering process.
Xinhai completed the construction drawing design within two months, from 18 March to 12 May 2021, and delivered the electronic drawings to the client on 27 May 2021, with printed drawings shipped together with the equipment. The thickening, filtration and magnetic separation equipment was supplied and installed on site under Xinhai's installation guidance, and the plant was put into operation by the end of 2024. The 480 t/d design capacity and the corresponding 158,400 t/a annual throughput are design values; no quantitative operating data is included in this case.
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