论文部分内容阅读
近些年随着全球经济持续低迷,钢铁需求疲弱,价格下跌,中国钢铁行业正经历着整体严重亏损的“寒冬”。中国钢铁业在今后很长一段时期里要面临经济减速、产能过剩、内需乏力、成本上涨、贸易壁垒日盛和市场竞争加剧的挑战。要迎接挑战抓住机遇,一个重要途径就是低成本、高效率洁净钢生产平台建设和高品质高端产品的开发与生产。洁净钢内容的的核心之一是钢中非金属夹杂物。钢中夹杂物分为内生夹杂物和外来夹杂物,其中内生夹杂物主要是脱氧产物及渣钢反应生成的夹杂物,主要形成于连铸前的炼钢和精炼工序;外来夹杂物则主要来源于连铸过程中钢液的二次氧化、炉渣下
In recent years, with the global economic downturn, sluggish steel demand and falling prices, the steel industry in China is experiencing a “cold winter” with a serious overall loss. China’s steel industry will face the challenges of economic slowdown, overcapacity, sluggish domestic demand, rising costs, rising trade barriers and intensified market competition in the long run. To meet the challenges and seize the opportunities, one important way is to develop low-cost, highly-efficient and clean steel production platforms and develop and produce high-quality and high-end products. One of the core of clean steel content is non-metallic inclusions in steel. The inclusions in steel are divided into endogenous inclusions and foreign inclusions, of which endogenous inclusions are mainly inclusions formed by reaction of deoxidation products and slag steel, mainly formed in the steel-making and refining processes before continuous casting; foreign inclusions Mainly from the secondary oxidation of molten steel in the continuous casting process, slag