回转炉是一种煅烧、焙烧或干燥粒状及粉状物料的热工设备。 回转炉作为一种常规窑型已存在了上百年，但都为大型或超大型，主要应用于粉料或矿物材料的初级粗加工，例如在水泥熟料的烧成、煅烧；高岭土制备钛白粉，稀土行业的加工等。虽然产量很大，但均存在温差较大，温度控制精度低，无法密封和实现精确的气氛控制等缺点。
中国石油锦州石化公司煅烧装置回转炉下料管，在运转过程中水套与内管连接处发生了开裂和烧损。
The rotary hearth calciner in calcinations device of Jinzhou Petrochemical Incorporation was cracked and burnt out at the joint be - tween water jacket and inner tube during its operation.
回转炉内的物料温度控制难度很大，从而导致产品质量的严重不均匀，这会造成氧化镁产品的反应活性下降、最终用户的生产成本升高。
It has a single "hard burned" and refractory grade MgO. Material temperature is difficult to control resulting in inconsistencies that reduce reactivity, costing the end user more.
结合生产实践，对本钢回转窑生产供转炉炼钢用高质量石灰进行研究。
Combined production practices, research is done on the high-quality lime which produced through rotary kiln for converter steel making at Bengang.
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