This paper has introduced the abilities that the 30t VOD/VHD vacuum refining furnace had achieved for decarburizing and keeping chromium ,deoxidizing and degassing and purifying molten steel in vacuum, and analysed objectively technique level achieved of this vacuum metallurgical equipment , combining practice with the specialized theory.

Simultaneous determination of chromium(Ⅵ) and manganese(Ⅶ) in steel by differential reaction rate kinetic spectrophotometry;

Catalytic spectrophotometric determination of trace chromium(Ⅵ) based on the oxidation of hydrogen peroxide on ethyl violet;

Determination of Trace Chromium(Ⅵ) in High Purity Samarium Oxide by Extraction Spectrophotometry;

Study on the Treatment of Wastewater Containing Cr(Ⅵ) with the Reductive Heavy Metal chelating Agent WY5;

DETERMINATION OF TRACE AMOUTS OF Cr(Ⅵ) BY ANTI CATALYTIC SPECTROPHOTOMETRY;

STUDIES OF MICROBIAL TREATMENT PROCESS FOR WASTEWATER WITH HIGH CONCENTRATION OF Cr(Ⅵ);