青钢高炉提高喷煤量实践

Practice of Increasing Coal Injection Rate of Qingdao Steel's BF

通过改造原煤仓下煤管、提高磨辊压力,使制粉能力提高12～18t/h;通过控制煤粉粒度、水分、温度等,改善了煤粉性能;又通过提高氮气压力、提高喷吹罐压力、降低补气流量、广喷匀喷等技术手段,使各高炉喷煤量提高2t/h,达到了降低燃料成本的目的。

By transforming the below coal tube of raw coal bunker and enhancing the pinch of roller,the grinding capacity raised 12～18 t/h.The performance of coal powder was improved by controlling the granularity,water and temperature of the coal powder.And by enhancing the pressure of nitrogen and the pressure of spray pot,playing down flux of renew gas and wide and equal injection so on,the pulverized coal injection quantity of every BF raised 2 t/h,reducing the cost of fuel.