传统的湿喷补技术存在喷补层强度低、孔隙度高、与原有炉衬结合性能差以及抗侵蚀能力弱等缺点,造成喷补周期短、不定形耐火材料的吨钢单耗高,增加了钢的生产成本。为此,新日铁发展了一种新技术——丙烷氧焰喷补法,它不仅克服了上述缺点,而且在炉衬表面形成一个“陶瓷粘结型不定形耐火材料层”,其耐高温和抗侵蚀能力等性能甚至超过原有的砖衬,从而可大大地延长了转炉炉衬的寿命。此喷补装置能利用原有的湿喷补设备稍加改造换上合适的喷头就可使用。例如喷补RH 和 DH 的设备规格为:喷补能力220～250公斤/时,物料喷射速度约20米/秒,喷头移动速度7米/分,丙烷和氧气消耗量分别为35～40和175～200标米~3/时;喷补转炉炉衬时喷头能力需达400—500公斤/时。为了提高喷补效果,喷补料必须具有良好的输送性能,输送浓度以不超过30%不宜;采用高熔 The traditional wet-jetting technology has the disadvantages of low strength, high porosity, poor bonding with the original lining and weak resistance to erosion, resulting in short shot-fill cycles and high unit consumption per ton of refractory The steel production costs. To this end, Nippon Steel has developed a new technology - propane oxygen flame spray method, which not only overcome the above shortcomings, but also in the lining surface to form a “ceramic bonded amorphous refractory layer,” its high temperature and Corrosion resistance and other properties even beyond the original brick lining, which can greatly extend the life of the converter lining. This spray device can use the original wet spray equipment slightly modified to replace the appropriate nozzle can be used. For example, the equipment specifications of RH and DH are as follows: the spraying capacity is 220-250 kg / h, the material spraying speed is about 20 m / s, the moving speed of the spray head is 7 m / min, the propane and oxygen consumption are 35-40 and 175 ~ 200 standard meters ~ 3 / hour; spray gun lining when the nozzle capacity to be up to 400-500 kg / h. In order to improve the effect of gunning, gunning material must have good conveying performance, conveying concentration not more than 30% should not be used;