摘要
为满足钢铁工业分析的需要,X射线分析技术取得了创新发展。钢铁冶炼过程不但要求全元素/氧化物的分析,还要求在不同阶段进行相分析。X射线荧光光谱法(XRF)已作为常规方法应用于钢铁工业中的化学分析,而X射线衍射(XRD)的应用则受到限制。通过与钢铁生产者进行紧密合作,将XRD完全与XRF相结合,为进行完全的过程控制和质量控制的相关实验室提供全面的分析能力,这种在科技上取得的突破性进展满足了行业需要。事实上,从铁矿石到烧结矿、炉渣、铸铁和各种合金,XRF-XRD综合系统能够提供完整的化学及相分析,以优化并提高高炉/炼钢炉生产过程的效率。该种方法也适合生产直接还原铁的厂商使用,可对混有金属铁的不同状态的氧化铁及其它混合物/相进行常规定量分析。波长色散X射线荧光(WDXRF)领域已经取得重大进展,钢铁工业能够完全自主地完成特定的分析任务。例如,分析炉渣、铸铁、铁合金以及电镀或电解后的镀层厚度,就只需利用低成本的WDXRF系统来解决。根据分析量以及不同元素的测定要求,设计了从低功耗到高功耗的一系列XRF系统来进行定量分析,所有的"已知"材料都可采用专用的校准程序进行分析。本文还将介绍各种不同的XRF和XRD方案,重点是其应用和分析方法;XRF和XRD二者作为钢铁工业中有价值的分析工具,本文将讨论其不同的应用实例。
Innovative developments have been made in the area of X-ray analysis of the benefit of iron and steel industry. Iron and steel making process requires not only total elemental/oxide analysis but also specific phase analysis at various stages. XRF is routinely used in iron and steel industry for chemical analysis while the application of XRD has been limited. Thanks to close collaboration with major iron and steel producer,this study has come up with a technological breakthrough to meet the industry requirements by integrating full X-ray diffraction inside an X-ray fluorescence spectrometer with a view to provide the most comprehensive analytical capability for a complete process and quality control laboratory. Indeed from iron ores through sinters to slags, cast iron and various alloys,the integrated XRFXRD system is capable of providing complete chemical and phase analysis for optimization and operational efficiency of a blast furnace/steel furnace based process, such approach is also ideally suitable for direct reduction of iron（DRI）based plants where various forms of iron oxides together with metallic iron and other compounds/phases can be routinely and quantitatively analyzed. There have been significant developments in the area of wavelength dispersive XRF（WDXRF）, which can help the iron and steel industry in addressing specific analytical tasks in a fully autonomous manner. For example,analysis of slages, cast iron, ferro-alloys and coating thickness after galvanic or electrolysis processes can be handled with cost effective WDXRF systems only. Depending on the throughput requirements and the detection of various elements, XRF systems sequenced from low power to high power have been designed for quantitative analysis. All the＂known＇materials are ana- lyzed by dedicated calibration programs while the＂unknown＂ or ＂non-routine＂ materials are treated by ＂standard-less＂XRF analysis programs. Various XRF and XRD solutions will be presented with emphasis on applications and analytical me
出处
《冶金分析》
CAS
CSCD
北大核心
2009年第12期1-6,共6页
Metallurgical Analysis
关键词
X射线荧光光谱法
X射线衍射
整合分析
烧结相
游离氧化钙
铸铁渣
X-ray fluorescence spectrometry
X-ray diffraction
integrated analysis
phases in sinters
free CaO
cast slages
