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宣钢10号高炉2008年3月投产,高炉有效容积为2500m3,喷煤系统采用了ZGM133G中速辊式磨煤机,大布袋一次收粉、三罐交叉并联倒罐喷吹、罐中央氮气流化板和罐底氮气流化装置等设备和工艺技术,设计制粉能力74～78t/h。在试生产过程中,存在着由于设计和设备存在的缺陷等原因,设备故障率高,生产不稳定;通过对原煤配比比例、制粉各工艺参数的及时、有效的调整,原煤输送、中速磨磨机本体、制粉、喷吹等设备一系列改造后,使喷煤量有了很大的提高,截止2008年6月,10号高炉中速磨台时产量均达到了45t/h以上,故障发生率明显降低、提高了高炉喷吹煤粉量,提高喷煤比节焦降耗,确保了高炉顺行,达到了预期的效果。
Xuan Steel No. 10 blast furnace put into operation in March 2008, blast furnace effective volume of 2500m3, coal injection system uses ZGM133G medium speed roller mill, a bag of powder, three cans of cross-parallel inverted cans spray, canister central nitrogen flow Plate and tank bottom nitrogen fluidization equipment and technology, design milling capacity of 74 ~ 78t / h. In the trial production process, due to defects in design and equipment and other reasons, equipment failure rate is high, the production is unstable; through the proportion of raw coal, milling process parameters of the timely and effective adjustment of raw coal transportation, medium Speed grinding mill body, milling, blowing and other equipment after a series of transformation, so that the amount of coal injection has been greatly improved, as of June 2008, No. 10 BF blast mill output reached 45t / h Above, the failure rate was significantly reduced, increased the amount of pulverized coal injection blast furnace, coal-fired to improve fuel economy than the coke, to ensure the smooth blast furnace to achieve the desired results.