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这是美国一家公司发明并已获得专利。该设备的构成及性能如下:一座立式还原炉,底部有一炉膛,铁矿石、焦炭进料及供氧装置设
This is a US company invented and patented. The composition and performance of the equipment is as follows: a vertical reduction furnace, the bottom of a furnace, iron ore, coke feed and oxygen supply device