美国 Midrex直接还原公司和日本神户制钢联合开发出直接还原铁的快速冶炼工艺 ,它是把精铁矿和废钢铁炼制成高金属含量的直接还原铁。该方法的成本低、速度快 ,环保性好 ,是 2 1世纪的炼铁新方法。其具体工艺是 :首先在旋转炉膛式竖炉中将炉料熔炼成 10 0 0℃的半成品直接还原 Midrex Direct Reduction Corp. of the United States and Japan’s Kobe Steel jointly developed a rapid smelting process for DRI that converts refined iron ore and scrap steel to DRI with high metal content. The method of low cost, fast, environmentally friendly, is a new method of ironmaking in the 21st century. The specific process is: first in a rotary hearth furnace will be charged into the furnace 10O 0 ° C semi-finished direct reduction