Instrument Analysis of Steel, Slag and Raw Materials Jan25

Instrument Analysis of Steel, Slag and Raw Materials...

Instrument Analysis of Steel, Slag and Raw Materials Instrument analysis is widely used for the qualitative and quantitative elemental analysis of raw materials, iron (hot metal), steel, slag, refractories, and sludges samples. Compared to the wet analysis, the advantage of instrument analysis is that it is cost effective and multi elemental besides being very fast. The worries caused by interfering elements in the wet chemical analysis are eliminated. Instrument analysis avoids the need of waiting several hours for certain elements, which is a necessity when the wet chemical methods are employed. Furthermore, instrument analysis provides a fairly uniform detection limit across a large list of elements or compounds and is applicable to a wide range of concentrations, ranging from 100 % to few parts per million (ppm). The instrumental methods are reproducible with lesser scope of human error because of lesser human intervention. They are rugged, reliable and accurate with the accuracy depends upon the calibration and the standards used for the calibration. The analysis of steel, slag and raw materials is important and essential not only during steel making process for the purpose of control but also for the large number of samples needed to be analyzed for various other purposes. The information from an analysis is useful for various purposes, such as the inspection of raw materials, intermediate product and end product, environmental assessment, process control, failure analysis, quality control of the products and for the purpose of research and development. History While the spectrograph had been used for quite some time in other fields, the first instrument to be used successfully for ferrous melting control was installed in a foundry in 1935. A Baird Spectrograph was installed in the Timken laboratory in 1943 for the analysis of tests from the melt...