A REVIEW ON THE APPLICATION OF CARBONATIONTECHNOLOGY FOR STEEL SLAG

摘要

Steel slag is a solid waste discharged from the iron and steel met allurgical industry. A large amount of the accumulation occupies land, leading to the en- vironmental pollution. Besides, the heavy metal ele- ments in steel slag infiltrate into soil to pollute groundwater, which also brings potential threat to people's lives. Meanwhile, with human industrial and agricultural activities, the emission of carbon di- oxide, a main source of greenhouse effect is increas- ing ceaselessly, which can cause health and environ- mental problems. At present, scholars at home and abroad have carried out research on the comprehen- sive utilization of carbon dioxide and steel slag. Car- bonized steel slag is beneficial to the stability and the activity of steel slag, which is also an available wayto the application for beneficial in the use of carbon dioxide. In this paper, the effects on the mechanical properties, including water content, hydration time, admixture, temperature, carbonization time, carbon dioxide concentration, forming pressure and mineral composition, as well as the and carbon sequestration effect of carbonized steel slag are analyzed. Further- more, in view of the present situation and existing problems, this paper also introduces the research suggestion for further development and popularizing of the application of carbonized steel slag.