Explanation

The process of removing some harmful impurity elements (such as sulfur, phosphorus, etc.) or extracting some useless components (such as vanadium, niobium, titanium, chromium, etc.) before molten iron is loaded into the steelmaking furnace. The purpose of desilication, desulfurization and dephosphorization of hot metal pretreatment is to reduce the smelting burden of converter, improve steelmaking productivity, and smelting low sulfur and low phosphorus steel and even ultra pure steel. The useful metal elements contained in molten iron can be oxidized and enriched in slag according to the principle of preferential oxidation, and then further refined into metals

Classification