1 前言杭钢自1958年建厂以来,经过四十多年的建设,特别是经过改革开放二十多年来的发展,在不少方面取得了长足进步。尤其是近三年在市场竞争日趋激烈的形势下,炼铁着重抓强化精料基础工作,提高烧结、球团、焦化生产及其管理水平。同时抓好技术改造、科技攻关,全力推动炼铁生产技术发展,取得了 1 Introduction Since its establishment in 1958, Hang Steel has made great strides in many aspects after more than 40 years of construction, especially after more than 20 years of reform and opening up. Especially in the past three years, with the increasingly fierce market competition, the Iron and Steel Company focused on grasping the basic work of concentrates and improving the production of sinter, pellets, coking and their management. At the same time do a good job of technological innovation, scientific and technological research, to promote the development of iron production technology, made