砖产量减少、不定形耐火材料增加是最近 30年来日本耐火材料工业发展的一大趋势。自从 1970年以来 ,日本耐火材料总产量大幅度下降 ,1970年产量为 371万ｔ,而 1999年产量仅为 12 7万ｔ,总产量降低约 6 6 %。日本的钢铁工业要消耗耐火材料总量的 70 % ,吨钢耐火材料消耗从 1970 The decrease in brick production and the increase in monolithic refractories are a major trend in the development of the Japanese refractories industry in the past 30 years. Since 1970, the total production of refractories in Japan has dropped significantly. In 1970, the output was 3.71 million tons. In 1999, the output was only 127,000 tons, and the total output decreased by about 66%. The Japanese steel industry consumes 70% of the total amount of refractory material, and the consumption of refractory material per ton of steel is from 1970.