The Production Process of Ferrosilicon
The production of ferrosilicon is a multi - step and energy - intensive process that requires careful control of various parameters. The raw materials mainly include silica (usually in the form of quartz or sand), coke as a reducing agent, and a source of iron, such as scrap iron or millscale.
The initial step involves charging these raw materials into a furnace. For ferrosilicon with lower silicon content (up to around 15%), a blast furnace lined with acid fire bricks is employed. In this furnace, the high - temperature environment, typically around 1500 - 1800 degrees Celsius, initiates the chemical reactions. Coke reacts with the oxygen in silica, reducing it to silicon. The iron source then combines with the newly formed silicon to create ferrosilicon. When it comes to producing ferrosilicon with higher silicon content, an electric arc furnace is used. The intense heat generated by the electric arcs provides the energy necessary for the reduction reactions. During the production process, it is crucial to control the ratio of raw materials accurately. An overabundance of silica is maintained to avoid the formation of silicon carbide, which can affect the quality of the final product. Additionally, the process also yields microsilica as a valuable by - product, which has applications in areas like the construction industry for improving the strength and durability of concrete.
ferrosilicon Description
|
Product |
Ferrosilicon |
|
Material |
Si C S P Al |
|
Color |
Silver grey |
|
Shape |
Lump |
|
Package |
1Metric Ton/Big Bag or As Customer's Requirement |
|
MOQ |
Negotiable |
|
HS Code |
720221 |

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