Electromagnetic slurry magnetic separator

The GTDZ series electromagnetic slurry separator is a new type of electromagnetic slurry iron removal equipment designed and manufactured by Weifang Guote Mining Equipment Co., Ltd. It features high background magnetic field intensity, large magnetic field gradient, high iron removal efficiency, low clogging, reliable operation, easy operation and maintenance, and a high degree of automation.

This equipment is widely used for iron removal and purification of non-metallic minerals such as quartz, feldspar, kaolin, nepheline, fluorite, and talc with a mesh size of 40-400. It is particularly effective for purifying fine-grained non-metallic ores. A variety of custom magnetic stainless steel media options are available to meet the beneficiation requirements of different regions and mineral types.

Its main components include: steel frame, upper magnetic yoke, magnetic concentrator, lower magnetic yoke, separator outer cylinder, excitation coil mechanism, external iron yoke assembly, upper and lower piping systems, high-pressure water flushing device, oil-water composite cooling system, pneumatic device, and electrical control cabinet.

Advantages of this equipment: The GTDZ electromagnetic slurry magnetic separator’s excitation coil is made of high-quality conductive material and features a multi-layer winding structure, resulting in short excitation time and a large coil heat exchange area. Its fully sealed design allows the excitation coil to be completely immersed in cooling oil, cooled by the forced flow of cooling oil. The heated cooling oil is pumped by an oil pump to an external high-efficiency heat exchanger, where it is forced to exchange heat with water. This oil-water combined cooling system delivers rapid cooling, low coil temperature rise, and a stable magnetic field, allowing operation in warmer climates. The special stainless steel magnetic media generates an extremely high magnetic field of up to 1.6 Tesla, strongly adsorbing low-content, micronized, weakly magnetic impurities. It can remove iron from a variety of non-metallic minerals with particle sizes ranging from 40 to 400 mesh. High-pressure water, combined with pulsed high-pressure air, cleans the magnetic media in both forward and reverse directions, ensuring clean, residue-free removal and long-term clogging resistance. The control system of the GTDZ electromagnetic slurry separator utilizes internationally renowned electrical components, ensuring safety, reliability, easy maintenance, and stable performance. Operating parameters and process cycles can be pre-configured based on actual conditions, enabling unmanned, fully automated operation, reducing operating and maintenance costs. The system is also equipped with fault alarms for overcurrent and overheating, providing automatic shutdown protection in emergency situations.

Operating Process: At the start of the beneficiation process, a direct current is applied to the excitation coil, generating an induction magnetic field of up to 1.6T on the surface of the magnetic medium in the separation zone. Slurry containing magnetic impurities is fed into the lower magnetic yoke via a slurry pump equipped with a variable frequency motor. After being evenly dispersed, the slurry enters the magnetic medium separation zone through the pores of the lower yoke. Magnetic impurity particles in the slurry are firmly adsorbed on the surface of the magnetic medium, while non-magnetic concentrate particles pass through the medium and are discharged through the pores of the upper yoke from the concentrate outlet. After a period of operation, the magnetic medium has absorbed a large amount of magnetic impurities, at which point the control system automatically enters the recirculation process. With the excitation coil continuously energized, the feed valve is first closed, followed by the return valve. The slurry remaining in the chamber then flows back into the raw ore pool. Once the slurry in the chamber is completely discharged, the return valve is closed, and the control system automatically initiates the flushing process. First, the excitation coil is de-energized, depriving the magnetic field of the magnetic concentrator, which loses its attraction to magnetic impurity particles. The tailings valve and flushing valve are then opened, sequentially. High-pressure flushing water and pulsed high-pressure air are then used to repeatedly flush the magnetic concentrator, completely flushing any magnetic impurities adsorbed on the concentrator and discharging them through the tailings valve. Once the concentrator is completely flushed, the flushing and tailings valves are closed, completing the flushing process. The control system automatically initiates the impurity removal process, and the equipment begins a new process cycle.