The specific difference between 75 ferrosilicon and 72 ferrosilicon

Ferrosilicon is an essential metallurgical product for steelmaking and casting. The main models are divided into 75# and 72#.

75 ferrosilicon is often called 75A type ferrosilicon;

72 ferrosilicon is often called 75C type ferrosilicon.

Generally speaking, 75# and 72# ferrosilicon are only ferrosilicon with silicon content of 75% and 72%. 75 ferrosilicon means that the silicon content is 74-80%, which is the so-called hard 75, and 72 ferrosilicon means that the silicon content is 72-80%, which is soft 75.

1. Ferrosilicon is an indispensable deoxidizer in the steelmaking industry.

2. Used as an inoculant and nodulizer in the cast iron industry. 75 ferrosilicon is an important inoculant (helping graphite precipitation) and nodulizer in the production of ductile iron. As a reducing agent in the production of ferroalloys, silicon has a high chemical affinity with oxygen, and the carbon content of high-silicon ferrosilicon is very low. Therefore, high-silicon ferrosilicon (or silicon alloy) is a commonly used reducing agent in the production of low-carbon ferroalloys in the ferroalloy industry.

3. The main application of 75 ferrosilicon 1. Deoxidizer and alloying agent in steelmaking industry. Since silicon and oxygen are easily combined into silicon dioxide, at the same time, due to the large amount of heat generated during the formation of silicon dioxide, ferrosilicon can be It is used as a deoxidizer for steelmaking, and generates a lot of heat during deoxidation, increasing the temperature of molten steel and reducing energy consumption.