Cementitious activity of iron ore tailing and its utilization in cementitious materials, bricks and concrete

摘要

A large number of iron ore tailings produced by the iron ore beneficiation industry have become a major challenge for industry owners and local government dealing with waste due to their environmental pollution, health issues and land scarcity. The best way to solve the problems of iron ore tailings is to develop large-scale utilization technologies that can consume large amounts of this waste. This paper specifically points out three directions for the use of iron ore tailings in construction and building materials, namely production of cementitious materials, preparation of bricks as well as preparation of concrete. Current research status and progress on the cementitious activity of iron ore tailings and these three directions are reviewed, and the future scope of research in this area is suggested. It is believed that iron ore tailings are consumed in large quantities, which not only solves their disposal related difficulties but also saves natural materials for these construction and building materials. From the economic point of view, it also provides economic advantages by not only producing low-cost construction and building materials, but also reducing the disposal cost of iron ore tailings.(c)& nbsp;2021 Elsevier Ltd. All rights reserved.