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Furnace slag is usually too high in FeO. In order to provide desulfurization and alloy predictability the FeO in the slag must be reduced to levels of 5-10%, or less than 5% for automotive exposed grades. Metallurgical treatment products are designed to lower the FeO in the ladle slag, in order to control the properties of the steel being made.
Harsco's ladle refining products are engineered for clean steelmaking practices in high productivity steel shops. These custom-designed additives quickly generate a fluid ladle slag to improve shop productivity and final product quality. The generation of a liquid ladle slag with high CaO and low FeO contents increases the absorption capacity of both oxide inclusions and sulfur. This is necessary to achieve the steel product specifications required for today’s applications.
At Harsco, we configure the exact characteristics of the product to suit the needs of individual customers. Using a mass balance analysis, we analyse a slag sample to determine the furnace chemistry. We compare this with the desired endpoint slag chemistry and typical carryover slag amounts, to create a custom metallurgical treatment product for each steel grade family. Contact us today to see how our products benefit your steel shop.
Custom-designed, lime-based Desulfurizers for efficient steel refining in the ladle are engineered to provide cost effective desulfurization during and after furnace tapping.
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Our aluminum and silicon-based Ladle Slag Conditioners/Deoxidizers are designed to quickly assimilate into the entire ladle slag volume, facilitating a complete reaction with the carryover furnace slag and effectively reducing the FeO and MnO contents of the slag in the ladle. Call us 330-372-1781
Our calcium aluminates are a cost effective approach to fluorspar-free ladle slag fluxing. As many aluminum killed steel shops are restricted in the use of fluorspar, calcium aluminate consumption has increased as a means of fluidizing CaO in a quick and effective manner. Call us 330-372-1781
We deliver effective ladle metallurgy treatment through our line of calcium aluminate, calcium silicate and calcium fluoride-based Synthetic Slag products. Each are chemically engineered to rapidly form a highly basic and fluid slag that will absorb impurities