The wear of the working refractory lining of an oxygen converter is explained by a combination of thermal, chemical and mechanical factors. Aiming at reducing these natural mechanisms of wear, with the benefit of increasing the useful life of the converters, a maintenance and repair technique of refractory lining known as Slag Splashing is widely employed in steelmaking. This technique consists in the projection of slag towards the hot face of the converter via nitrogen blowing lance. In order to achieve an effective process, many variables must be controlled, including those related to slag physicochemical properties (basicity, viscosity and surface tension), operational aspects (lance height, nitrogen blow flow, static lance or in motion) and geometric aspects (number of lance holes, hole angle, dimensions of the converter).
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