To address the industry challenges of continuously declining raw ore grades and the efficient recovery of mineral resources, and in line with the national green and low-carbon development strategy, SLon Magnetic Separator Co., Ltd. has successfully developed and rolled off the world’s first ultra-large SLon-6500 VPHGMS. This move further optimizes the enterprise’s portfolio of high-end large-scale separation equipment and strengthens its core technological competitiveness.

The equipment features a rotating ring diameter of 6,500 mm, a maximum processing capacity of 1,500 tons per hour, and a total machine weight of 800 tons, making it suitable for intensive production in ultra-large mines. Its background magnetic field ranges from 0 to 1.8 T, paired with an adjustable pulsation system. It accommodates feed particle sizes of -1.3 mm and feed concentrations of 5% to 40%, capable of meeting the demands of large-scale mineral purification operations.

The specific parameters are shown in the table below:

The complete machine adopts a modular magnetic yoke and split rotating ring structure, which greatly reduces the difficulties in transportation, installation and maintenance. It is equipped with intelligent systems including magnetic medium bolt looseness detection, automatic liquid level control, high-pressure flushing and automatic slag discharge to ensure long-term safe and stable operation. Relying on core technologies such as ultra-large split rotating rings, optimized magnetic circuits, efficient magnetic medium capture and high-sealing magnetic fields (see Figure 1 for core technologies), the equipment delivers significantly improved separation accuracy and recovery rate of weakly magnetic minerals. Its power consumption per ton of ore is as low as 0.19 kWh, presenting outstanding energy-saving advantages that help mines cut costs, boost efficiency and realize green production (see Figure 2 for the comparison of processing capacity and energy consumption of different equipment models).

Figure 1 Core Technology of SLon-6500

Figure 2 Comparison of Throughput and Energy Consumption of Different Equipment Models

At present, the world’s first ultra-large SLon-6500 high-gradient magnetic separator has been officially put into operation at the Yichun Tantalum-Niobium Mine (see Figure 3 for on-site application photos). It can provide an integrated separation solution featuring large processing capacity and low energy consumption for various types of mineral resources and industrial solid waste.

Applicable scenarios include the purification of various weakly magnetic metallic minerals such as hematite, limonite, siderite, ilmenite, chromite, manganese ore, wolframite, rare earths, tantalum and niobium. Meanwhile, it can separate and recover secondary solid waste resources including red mud, steelmaking slag, gas ash, fly ash and smelting slag, and is widely applicable to rare metal, ferrous metal and non-metallic mines as well as solid waste resource utilization projects.

Figure 3 The world’s first SLon-6500 applied in Yichun Tantalum-Niobium Mine