It is a ferroalloy composed of silicon, chromium, and iron. Also known as silicon-ferrochrome. It is mainly used as an electrosilicon thermal method for the production of medium, low and micro carbon ironMaster alloys。 It is used as a deoxidizer (instead of ferrosilicon) and chromium additive in steelmaking. Generally, it contains 30% Cr> and 35% > Si, and the balance is iron and a small amount of impurities. According to the classification of carbon content, such as carbon ≤ 0.06%, ≤ 0.10%, ≤ 1.0%, etc. 

Alloys of iron, chromium and silicon with a chromium content of not less than 30.0% and a silicon content of not less than 35.0%. There are two types of production processes: a one-step process (often referred to as the "slag process" or "ore process") and a two-step process (often referred to as the "slag-free process"). The raw materials used in one-step smelting are silica, chrome ore and coke. The raw materials used in the two-step smelting are:silica, carbon ferrochrome, steel scraps. Both smelting methods use coke as a reducing agent.

The source of silicon in alloys is mainly SiO in silica2The sources of chromium are chrome ore and carbon ferrochrome, respectively. All of them are smelted in a ferroalloy submerged arc furnace. It is mainly used in the production of medium and low-carbon ferrochrome, micro-carbon ferrochrome reducing agent and steelmakingMaster alloysDose. According to the silicon-chromium alloy containing Si, Cr, C, it can be divided into a variety of different grades of silicon-chromium alloy. The composition of the alloy system is as follows, and 50% of the Si> is composed of (Fe· Cr)Si240% of Si> composed of (Fe· Cr) Si2and (Fe· Cr)Si, containing 30% of Si> composed of (Fe· Cr)Si and (Fe· Cr) Si composition, Si < 19% (Fe· Cr)3C and (Fe· Cr)23C6Majority.

Because the phase composition of silicon-chromium alloy determines the effect of carbon reduction outside the furnace, the Si content in silicon-chromium alloy is generally controlled to be greater than 40% in industrial production. The C content of the silicon-chromium alloy produced by the furnace is generally 0.2-0.8%, which is difficult to use directly, and it must be treated by carbon reduction outside the furnace, and the C content of the alloy can be reduced to less than 0.02%, and different grades of silicon-chromium alloy can be refined according to user requirements. In addition, ferrosilicon is added to a liquid high-carbon ferrochrome to produce silicon-chromium alloys.