Utilization of Steel Slags in the Cement Industry

Abstract:

The production of steel slag, a byproduct of the steel refining keeps increasing rapidly and it reached 90.42 million tons in 2011 in China, but its comprehensive utilization ratio is only 22% and far less than the ratio of 65% in Europe. Main chemical compositions of steel slag are CaO, SiO2, Al2O3, FeO, Fe2O3, MgO, MnO, P2O5 and so on, C3S, C2S, C3MS2, RO phase are its common minerals. Due to its high reactivity and Ferro content, steel slag has high potential utilization as supplementary hydraulic cementitious materials or cement clinker meal in cement industry. A method of multiple phased sintering was presented, it can break through the bottlenecks for the steel slag using in the cement industry, e.g. volume stability and grindability ,the carbon emission of cement industry is slashed, it is an effective new approach to massively utilize steel slag in cement industry.

• Periodical: Key Engineering Materials (Volume 599)
• Pages: 98-102
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.599.98
• Online since: February 2014
• Authors: Jiang Feng Li, Xiu Cheng Luo, Meng Ke Sun, Wei Guo Shen*, Bing Cao, Xin Ling Li
• Keywords: Building Material, Cement Industry, Multiple Phased Sintering, Steel Slag

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