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陕西省汉江钢铁厂喷煤工程带负荷试车于1997年6月6日一次成功,2号高炉(380m~3)和1号高炉(300m~3)相继顺利喷煤。截止7月10日,两座高炉平均喷煤量已达1000kg/h。喷煤系统设计的最大喷煤量为150kg/t铁,并且既可喷吹无烟煤,也可喷吹烟煤,采用了比较先进的安全措施。喷煤系统的工艺流程:原煤由火车拉进专用线,用汽车倒运到贮煤量为4000t的机械化煤库。原煤粉经圆盘给料机进入胶带运输机运至主煤仓。制粉系统:为了降低制粉工序能耗和保证系统内的低氧气氛,采用了热风炉烟道废气作为干燥剂。原煤粉均匀进入含高温烟气的球磨机制成细粉,并经一系列煤粉收集设备后,粒级合格的煤粉进入喷吹系统的煤粉
The Hanjiang Iron and Steel Plant of Shaanxi Province carried out a trial run with load on June 6, 1997, with the second blast furnace (380m ~ 3) and No. 1 blast furnace (300m ~ 3) smoothly succeeding in coal injection. As of July 10, the average blast volume of two blast furnaces reached 1,000kg / h. Coal injection system designed to inject a maximum amount of 150kg / t iron, and can both injection of anthracite, also bituminous coal, using more advanced safety measures. Coal injection system of the process: Raw coal pulled into the special line by train, with the car back to coal storage capacity of 4000t mechanized coal storage. The original coal powder through the disc feeder into the belt conveyor transported to the main bunker. Milling system: In order to reduce the energy consumption of the milling process and to ensure that the system of low oxygen atmosphere, the use of flue gas stove flue gas desiccant. Raw coal powder evenly into the ball mill containing high temperature flue gas made of fine powder, and after a series of pulverized coal collection equipment, the grade of qualified coal into the injection system pulverized coal