Ferro silicon is an alloy made up of a specific combination of silicon and iron, primarily used in steel and magnesium smelting.Ferro silicon is a metallic alloy consisting of silicon and iron, along with various other elements like Al, Mn, Cr, P, S, and C, in certain proportions. It exhibits a metallic color with no impurities.
Physical Properties:
▶Melting Point: Ferro silicon has different melting points, such as 1290°C to 1360°C for 72#-80# ferro silicon
▶Density: The density of ferro silicon varies based on its silicon content; for instance, 75# ferro silicon has a density of 4.75g/cm³.
Production Process: Ferro silicon is produced by heating raw materials like coke, steel, silica, or quartz to temperatures between 1500°C and 1800°C in an electric furnace. This process reduces silicon from silica-containing SiO2 and dissolves it in molten iron, commonly using metallurgical coke as a reducing agent and iron filings as a regulator.
Raw Materials and Power Consumption:
▶Silica: 1780kg-1850kg
▶Coke: 890-930kg
▶Iron Filings: 220-230kg
▶Electrode Paste: 45-55kg
▶Power Consumption: 8400-9000kWh per ton
| Grade | Si | Al | C | S | P |
| FeSi72 | 72%min | 2.0%max | 0.2%max | 0.02%max | 0.04%max |
| FeSi75 | 75%min | 2.0%max | 0.2%max | 0.02%max | 0.04%max |
| FeSi75 Low Al | 75%min | 1.0%max 0.5%max 0.1%max |
0.1%max | 0.02%max | 0.04%max |
Ferro Silicon Products: Ferro silicon is available in lumps and powders with various particle sizes and silicon contents, ranging from 0-1mm to 50-100mm. Customizations are also possible. Our direct shipment model as a ferro silicon alloy manufacturer offers cost advantages without intermediaries.
Ferro Silicon Market Demand:
▶Steel Industry: The steel industry requires approximately 3-5 kilograms of ferro silicon per ton of crude steel. While price fluctuations have limited impact, increasing global steel demand drives the need for ferro silicon products.
▶Magnesium Smelting: The smelting of metallic magnesium relies on ferro silicon, and its price directly affects production costs. With magnesium replacing aluminum in auto parts, demand is rising.
▶Global Exporter: China plays a significant role as an exporter of ferro silicon, supplying lumps and powder to various countries, including Japan, the United States, South Korea, India, and Southeast Asia.
