Abstract：Vanadium-titanium bearing slag is from vanadium-titanium magnetite after smelting in blast furnace. The sulfur content in slag is an important index to classify the product grade. The crucible was pretreated according to the industrial standard YB/T 4145-2006. (0.30±0.01) g of sample was transferred into a crucible containing 0.8 g of pure iron as the flux. Then 1.6 g of tungsten-tin flux was added. The analytical power was 1.95 kW. The determination method of sulfur in vanadium-titanium bearing slag by high frequency combustion infrared absorption was established. The optimum analytic conditions were as follows: the analytical power was 1.95 kW; 0.8 g of pure iron and 1.6 g of tungsten-tin were used as flux; the mass of sample was 0.30 g. The results of blank experiments showed that the standard deviation of blank was 0.000 5%. The limit of detection and limit of quantification was 0.001 5% and 0.005%, respectively. The content of sulfur in vanadium-titanium bearing slag samples was determined according to the experimental method. The found results were consistent with those obtained by gravimetric method in YB/T 505.8-2007. The relative standard deviations (RSD, n=8) were less than 3%.
张高庆, 王录锋. 高频燃烧红外吸收法测定钒钛高炉渣中硫[J]. 冶金分析, 2022, 42(4): 14-18.
ZHANG Gaoqing, WANG Lufeng. Determination of sulfur in vanadium-titanium bearing slag by high frequency combustion infrared absorption method. , 2022, 42(4): 14-18.
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