Description

atomized ferrosilicon Factory

ferro silicon fesi

Ferrosilicon is produced by reducing silica or sand with coke in the presence of iron. Typical sources of iron are scrap iron or scale. ferrosilicon lump, which contains up to about 15% silicon, is produced in blast furnaces lined with acid refractory bricks.

Ferrosilicon, which has a higher silicon content, is produced in electric arc furnaces. Common formulas on the market are ferrosilicon with silicon content of 15%, 45%, 75% and 90%. The remainder is iron, and about 2% is made up of other elements such as aluminum and calcium. Use excess silica to prevent silicon carbide formation. Microsilica is a useful by-product.

Pearlite is similar to ferrosilicon and its composition is Fe5Si2. Ferrosilicon may slowly produce hydrogen gas when in contact with water. This reaction is accelerated in the presence of a base and is used to produce hydrogen gas. The melting point and density of ferrosilicon depend on its silicon content, with two near-eutectic regions, one close to Fe2Si and a second spanning the FeSi2-FeSi3 composition range.

Physical properties of ferro silicon metal

Si mass fraction (%)	0	20	35	50	60	80	100
Solidus point (°C)	1538	1200	1203	1212	1207	1207	1414
Liquidus point (°C)	1538	1212	1410	1220	1230	1360	1414
Density (g/cm³)	7.87	6.76	5.65	5.1	4.27	3.44	2.33

Raw materials for the production of atomized ferrosilicon

The raw materials used to produce ferrosilicon granule are usually iron ore, coke and silica. Iron ore is the main source of iron and is usually mined from open pit or underground mines. The iron ore is then processed to remove impurities and crushed into small pieces. Coke extracted from coal is used as a carbon source in ferrosilicon production. Silica, usually in the form of quartz or quartzite, provides the necessary silicon content.

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milled ferrosilicon production process

The ferrosilicon alloys production process starts with the preparation of raw materials. Carefully measure the iron ore, coke and silica and mix in the desired proportions. The mixture is then heated in a furnace to 1,200 to 1,500 degrees Celsius. The high temperatures cause the coke to react with oxygen in the iron ore to form carbon monoxide and carbon dioxide. This exothermic reaction provides the heat required for the reduction of iron and silicon.

FeSi 65