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Published Time:

2020-07-21

Ferrosilicon, a ferroalloy composed of iron and silicon, is the main product of ferrosilicon manufacturers. It can be used as a deoxidizer, alloying agent, and modifier in steelmaking. In order to allow more people to have a more comprehensive understanding of ferrosilicon, our company would like to share some basic information about ferrosilicon with everyone. During the slow cooling process of liquid ferrosilicon, the silicon-rich part with low density floats up, and the iron silicide with high density sinks, causing segregation of the ferrosilicon components. To reduce the segregation of ferrosilicon ingots, it is necessary to lower the casting temperature of ferrosilicon, control the ingot thickness, or use layered casting and accelerate the cooling rate of the ingots. Most of the impurities in ferrosilicon are in the form of phosphides and arsenides, and they accumulate at the grain boundaries. When water in the air

Ferroalloys composed of iron and silicon are the main products of ferrosilicon manufacturers. They can be used as deoxidizers, alloying agents, and modifiers in steelmaking. To allow more people to have a more comprehensive understanding of ferrosilicon, our company would like to share some basic information about ferrosilicon with everyone. During the slow cooling process of liquid ferrosilicon, the silicon-rich part with lower density floats to the top, while the iron silicide with higher density sinks, causing segregation of the ferrosilicon components. To reduce segregation in ferrosilicon ingots, it is necessary to lower the casting temperature of ferrosilicon, control the ingot thickness, or use layered casting and accelerate the cooling rate of the ingots. Impurities in ferrosilicon mostly exist in the form of phosphides and arsenides, accumulating at the grain boundaries. When moisture in the air penetrates the cracks in the iron ingots and reacts with the phosphides and arsenides accumulated at the grain boundaries, toxic PH3 and AsH3 gases are generated, causing the grain boundaries to be completely destroyed, which is another factor contributing to the pulverization of ferrosilicon.

Keywords:

Oxygen absorber,Alloying agent,Modifying agent

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Contact Information

Company Name: Ningxia Qiyan New Materials Co., Ltd
Address: Room C7, 14th Floor, Section B, Yinchuan International Trade Center, Xingqing District, Yinchuan City, Ningxia, China
Tel:0086-013909510736