Currently, iron ore resources are embedded with fine particle size, and generally need to go through two-stage grinding, and a few three-stage grinding and sorting. Therefore, except for some coarse-grained tailings thrown out by pre-selection, most of the tailings discharged and stored in beneficiation have a particle size. It is relatively fine. Generally, the tailings particle size is less than 0.074mm, accounting for 50% to 70%. Only the tailings in the middle and lower reaches of the Yangtze River have coarser tailings. At the same time, the main mineral composition of iron tailings is similar to that of natural sand, and it is widely used in iron tailings concrete, iron tailings bricks, iron tailings thermal insulation wall materials, and iron tailings to prepare glass-ceramics and other building materials. It can not only reduce the accumulation of iron tailings caused by environmental pollution and land waste, but also replace some raw materials and save production costs.

Among them, the use of iron tailings to prepare glass-ceramics can develop high-performance, low-cost high-grade building decoration or industrial damage-resistant and corrosion-resistant materials, and improve the technical content and added value of tailings products. Therefore, scholars at home and abroad have carried out a series of researches on this issue in recent years. For example, Beijing University of Science and Technology used Damiao iron tailings and waste rock as the main raw materials to make tailings glass-ceramic granite; Shenyang Institute of Architecture and Engineering and Northeastern University jointly developed and utilized Weitoushan iron tailings and Xincheng gold mine tailings to add adjustment Oxides and appropriate crystal nucleating agents are used to form glass-ceramics for construction with diopside as the main crystal phase, and the amount of tailings can reach more than 65%.