Effect of slag on high carbon chromium iron washing iron smelting
High carbon ferrochrome manufacturers in the smelting of high carbon ferrochrome water iron process, will use the slag, the following Shanghai high carbon ferrochrome suppliers to explain the role of slag in detail.
In electric furnace smelting (electric arc furnace, mineral thermal furnace, electroslag remelting furnace, etc.) slag plays the role of resistance heating element. Slag plays a decisive role in ensuring the quality of smelting products, metal recovery rate, smooth smelting operation and various technical and economic indicators.
Enrichment of useful metal oxides.
Remove harmful impurities such as sulfur, phosphorus and oxygen in molten steel, absorb non-metallic inclusions in molten steel, and protect molten steel from directly absorbing hydrogen, nitrogen and oxygen.
Forming molten slag makes gangue components or impurity oxidation products and molten metal or matte smooth separation.
In addition, it should be noted that the slag to complete the metallurgical effect is good or bad, mainly determined by the melting point of molten slag, viscosity, boundary (surface) surface tension, specific gravity, electrical conductivity, enthalpy, thermal conductivity and some components of the activity (A). These physical and chemical properties are determined by the composition of the slag. The composition of slag is adjusted by adding an appropriate amount of flux, the more important flux is limestone and quartz stone. Fluorite (CaF2) is also an important flux in steel-making slag and synthetic slag in electric furnace.
