The magnetic gravity separator MGS 2.0 a product of mutual work of Mining Institute KNC Ran and Rudgormash company, is rapidly conquering the enrichment equipment market. It seams that the first prototype was released just about a couple of years ago, however already more than 80 units of “Zelenova barrels” (another name for MGS 2.0) have been shipped from Rudgormash industrial site.
The first consumers who successfully introduced this innovative product into their mineral-processing production line were two large production divisions of Severstal PJSC: Karelsky Okatysh JSC and Olkon JSC (Olenegorsk GOK). The enterprises produce iron ore concentrate and develop iron ore deposits in the Republic of Karelia and in the Murmansk region, respectively. Through the modernization of their production lines and the introduction of magnetic-gravity separators into the processing chain, the concentration plants have significantly improved the quality of iron ore raw materials. The possibility of increasing the iron content in the concentrate up to 70% without the need for an additional enrichment procedure attracted the interest of other manufacturers of iron ore concentrate to this product.
The MGS 2.0 magnetic-gravity separator is a cylindrical-conical body of non-magnetic material, tapered to the bottom, into which pulp is fed from above, and supplied an upward flow of water from below. Strong magnetic mineral particles under the influence of a magnetic field are concentrated in the lower part of the cone and are discharged as magnetic concentrate. The waste rock and aggregates of strongly magnetic particles are removed through the drain. The separator is used to enrich finely ground highly magnetic ores with a grain size of up to 0.2 mm. Comparing MGS 2.0 with other magnetic separators such as drum PBMs, the following feature can be noted: on the latter, magnetic particles are tightly pressed to the surface of the drum and non-magnetic particles are trapped in them and therefore they are poorly released, which leads to a decrease in the quality of the magnetic concentrate. While in the magnetic-gravity separator the particles are located along the axis of the cylindrical body and do not cling to the walls, so "loose" non-magnetic particles are easily washed out of them by ascending swirling streams of added water.
The aforementioned MGS 2.0 magnetic gravity separators have a number of advantages compared to models from other manufacturers. The solenoidal coil creating a magnetic field consists of 5 sections, which allows you to conveniently replace any part of it in case of an unexpected failure. The outer row of the coil winding has a special protective coating. For the operator’s convenience, an automatic control system is implemented in the design of the separator, and an emergency concentrate discharge option is provided. The main part of the separator is located on a stable frame, which can be designed in sizes suitable for the customer.