One Of High Level Alloys Ferro Silicon Aluminum

Ferro silicon aluminum alloy has the significant advantages of high density (4.2~4.6g/cm3, about 1.6 times of Al density), low melting point (1060 °C) and good deoxidation effect, so it is mainly used as a deoxidizer for steelmaking and a reducing agent for magnesium smelting by thermal reduction. With the rapid development of the steel industry, the demand for ferrosilicon aluminum alloy is gradually increasing.

1.A method for preparing ferro silicon aluminum alloy by carbon thermal reduction of fly ash is carried out according to the following steps: fly ash, carbonaceous reducing agent and additives are respectively crushed and screened into fine powder; Fly ash fine powder, carbonaceous reducing agent fine powder and additive fine powder are mixed to make A mixed powder, and water pressure is added to make A pellets; Fly ash fine powder, carbonaceous reducing agent fine powder, additive fine powder and iron-containing substances are mixed to make B mixed powder, and water pressure is added to make B pellets; A pellets and B pellets are dried, mixed in proportion, and then carried out carbon thermal reduction reaction at a temperature of 1400~2200 °C for a time of 30~120min; After separating the slag, the alloy melt is cast. This method improves the recovery rate and economic added value of fly ash, 

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