Ferroalloy
Category
Ferrosilicon is an iron alloy composed of iron and silicon. It is produced by smelting iron and silicon ores—using coke, steel scrap, and quartz (or silica) as raw materials—in an electric arc furnace. Because silicon readily combines with oxygen to form silicon dioxide, ferrosilicon is commonly used as a deoxidizer in steelmaking; moreover, the substantial heat released during the formation of SiO₂ helps raise the temperature of the molten steel. In addition, ferrosilicon serves as an alloying element, widely employed in low‑alloy structural steels, spring steels, bearing steels, heat‑resistant steels, and electrical silicon steels. In both ferroalloy production and the chemical industry, ferrosilicon is frequently utilized as a reducing agent.
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Silicomanganese alloy is an alloy composed of manganese, silicon, iron, and small amounts of carbon and other elements. It is a widely used ferroalloy with substantial production volumes, serving as an indispensable composite deoxidizer and alloying agent in the steel industry. Manganese–silicon alloys containing less than 1.9% carbon also function as semi‑finished products in the production of medium- and low‑carbon ferromanganese and metallurgical manganese via the electric‑silicothermic process.
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Ferro-manganese is an iron alloy composed of manganese and iron. In steelmaking, it serves as a deoxidizer and alloying additive and is the most widely used ferroalloy. Ferro-manganese also finds extensive applications in the metallurgical industry, primarily for producing ferro‑manganese alloys, manganese‑copper alloys, and manganese sand for steelmaking. It is broadly classified into high‑carbon ferro‑manganese (with a carbon content of 7%), medium‑carbon ferro‑manganese (containing 1.0–1.5% carbon), and low‑carbon ferro‑manganese (with a carbon content of 0.5%).
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