近年来，由于耐火材料质量的改善及炼铁炼钢工艺的提高，整个耐火材料消耗下降，然而美国耐火材料产量在近五年来却稳定增长。由于日本、韩国和东南亚国家及南美洲的巴西、阿根廷的经济问题，全球耐火材料市场仍旧是不稳定的。由于日本侵略性的经济政策，尽管其经济在衰退，但 In recent years, due to the improvement of the quality of refractories and the improvement of iron-smelting and steel-making processes, the consumption of the entire refractories has dropped. However, the output of refractories in the United States has steadily increased in the past five years. Due to the economic problems of Japan, South Korea and Southeast Asian countries and Brazil and Argentina in South America, the global refractory market is still unstable. Due to Japan’s aggressive economic policies, despite its economic downturn,