高炉开炉进程的好坏,对高炉的寿命及以后技术经济指标影响很大。我公司几年来,对300m~3高炉大、中修后的开炉进行了一些新的探索,除采用全焦、热装、边送风边装料的开炉方法外,对开炉点火方法作了较大的改进,取得了较好的效果,摸索出了一些经验。本文仅就此作一介绍。一、铁口难开是全焦热装开炉面临的新课题全焦热装开炉具有开炉进程短、成本低、又便于操作等优点,因此近年来已被广泛采用,而在炉缸部位填充木柴的方法已不多见。但由于仍然沿用传统的从风口带点火的方式,产生了铁口难开的新问题。例如2号高炉1979年8月6日中修开炉,11点15分送风点火,出第一炉铁烧铁口时间8小时30分,消耗氧气40瓶,在铁口用炸药放炮12炮,连 BF blast furnace process is good or bad, the life of the blast furnace and the subsequent technical and economic indicators of great influence. In recent years, our company made some new explorations on large and medium open blast furnaces of 300m ~ 3 blast furnaces. In addition to the open furnace method of charging with full coke, hot charge and side blowing, Made a greater improvement, achieved good results, worked out some experience. This article only made an introduction. First, the taphole is difficult to break all-in-one hot new problems facing the furnace Full-fledged hot-open furnace with open furnace short process, low cost, ease of operation and other advantages, it has been widely used in recent years, and in the hearth There are few ways to fill firewood. However, due to the traditional way of igniting from the tuyere, the new problem of hard-to-open steel mouth has been created. For example, No. 2 blast furnace in August 6, 1979 repair open stove, 11:15 blast ignition, out of the first iron stove iron mouth time 8 hours and 30 minutes, consume 40 bottles of oxygen in the iron mouth with explosives fired 12 guns ,even