Corrosion mechanism of carbon brick in the blast furnace hearth by potassium Ke-xin Jiao, Jian-liang Zhang, Zheng-jian Liu, Zhuang-zhuang Liu, Yong Deng and Xiaoyue Fan Metall. Res. Technol., 115 1 (2018) 109 Published online: 22 November 2017 DOI: 10.1051/metal/2017060