无焦炭冶金——熔融还原技术的发展

METALLURGY WITHOUT COKE—DEVELOPMENT OF SMELTING REDUCTION TECHNOLOGY

本文概述“无焦炭冶金”——“熔融还原技术”的定义、意义、理论基础、方法和分类、技术关键、能耗、生产率、技术经济指标,历史发展过程、国际动态和我国的研究开发现状。对二次燃烧率、传热和热效率、炉衬寿命、防止再氧化、竖炉预还原、流态化预还原、气体的除尘改质回收利用、预还原与终还原的合理配合等技术关键作了简要说明。

This paper summarises the definition, history, theoritical base, sort of production methods, key problems, domestic and international status, technical and economical indeces of the metallurgical process without coke梑ath reduction technology. Some key points such as secondary combustion, heat transfer and effectiveness, lining life, reoxydation prevention, pre-reduction by shaft furnace or fluidization, dedusting-reform-recovery of gas, rational coordination of final reduction with pre-reductin are briefed.