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介绍了国内外转底炉直接还原工艺发展现状,提出含碳球团造块技术、转底炉装料机设计、转底炉出料机设计、转底炉炉温、炉压及炉内气氛的控制以及金属化球团防氧化技术等是保障转底炉连续稳定顺行的关键技术。合理的水分、压力及粘结剂种类可以获得较好的压球效果;振动给料机和装有硬质耐磨合金的螺旋出料机是目前转底炉装、出料机的主流;根据原料的不同,各厂家已摸索出适宜的炉温、炉压等工艺参数,并对金属化球团采取冷却或隔绝空气的保护措施。
The status quo of the direct reduction process of rotary hearth furnace at home and abroad is introduced. The technology of carbon - containing pellet block making, rotary loader design, rotary discharger design, rotary furnace temperature, furnace pressure and furnace atmosphere Control and metalized pellet oxidation technology is to ensure that the rotary hearth furnace continuous and stable key technology. Reasonable moisture, pressure and binder types can get better pressure ball effect; Vibrating feeder and hard alloy wear spiral feeder is the current rotary furnace loading, the discharge of the mainstream; according to the raw materials Different manufacturers have worked out the appropriate furnace temperature, furnace pressure and other process parameters, and the metal pellets to take cooling or isolated from the air protection measures.