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目前国内很多炼钢厂根据耐火材料资源条件及多快好省的方针,掌握了焦油白云石砖的制造技术,并逐步在碱性转炉上推广使用。但是煅烧白云石的煅烧设备要求较严,一般要求用机械化转窑或连续式鼓风竖窖,需用大量钢材、耐火砖及中压风机,投资高,速度慢,在中小型钢铁厂难以普遍采用。特别是要很快的满足碱性转炉所需的白云石炉衬,更为困难。北京市周口店灰石厂在支援钢铁“元帅”升帐热潮中创建成的“周口店”式的高温土窖,煅烧的白云石烧结良好。如中小型钢铁厂普遍自制焦油白云石砖时,
At present, many domestic steel mills have mastered the manufacturing technology of tar dolomite bricks according to the refractory material resource conditions and the principle of making them more efficient and economical, and have gradually promoted their use on alkaline converters. However, calcined dolomite calcination equipment more stringent requirements, generally require the use of mechanized rotary kiln or continuous blast kiln, the need to use a large number of steel, refractory bricks and medium pressure blower, high investment, slow, difficult to universal in small and medium-sized steel mills use. In particular, it is more difficult to quickly meet the dolomite lining required for a basic converter. Beijing Zhoukoudian Graystone plant was built into a “Zhoukoudian” high-temperature crypt in the steelmaking “marshal” escalation boom, and calcined dolomite sintered well. Such as small and medium-sized steel factory generally made of tar dolomite brick,