Abstract: Now a days there is an acute problem of shortage of natural raw materials for the production of building materials, due to rapidly evolving tempo of construction. In this regard, the urgent task of building industry is refocusing companies on consumption of anthropogenic materials. The most large-capacity raw material is byproducts of mining and in particular waste of Wet Magnetic Separation (WMS/MMC), formed by the ore benefication. On the territory of the Russian Federation Kovdorskoye deposit is one of the largest of this type and it is located on the Kola Peninsula. Study of the composition and properties of the WMS waste, as well as a comparative analysis with other sands of anthropogenic origin which are currently used in the manufacturing of building materials, showed the possibility of application of this raw material as a component of the composite binder which would reduce the amount of binder as the most expensive and energy-intensive material without reducing the strength of the final product.