高炉砌筑中,砖缝的宽度要求控制在0.5毫米以下,质量要求很严格。因此,必须将耐火砖的六个面仔细加工磨平。过去加工耐火砖都用手摇磨砖机,这在加工质量和成本等方面都受到一定的限制。从1953年起,石钢修理厂采用了龙门式磨砖机,到目前已有 In blast furnace masonry, the width of brick seams is required to be controlled below 0.5 mm, and the quality requirements are very strict. Therefore, the six faces of the firebrick must be carefully machined and polished. In the past, hand-operated bricks were used to process refractory bricks, which was subject to certain restrictions in terms of processing quality and cost. Since 1953, gantry mills have been used at the Shigang repair facility.