Cradle to Gate
Identity ID
a59b9ddd-d258-4b13-a9d0-3c86e544bc35
Materials
Associated ID
d97687f0-b208-4437-9f5f-2e77d95371bf
Included activities starts
Included activities ends
Description
This process refers to the production activity of producing 1 kg of rare-earth magnesium ferrosilicon alloy by the medium frequency furnace process. Rare-earth magnesium ferrosilicon alloy is mainly used as a nodulizer in the production of nodular cast iron. The dataset includes raw and auxiliary materials such as ferrosilicon, magnesium ingot, rare earth, and scrap steel, and energy inputs such as electricity; the outputs include the product nodulizer, the wastes dust-collection ash and smelting slag (which can be recovered and comprehensively utilized), as well as emissions to the atmosphere and water bodies. The data inventory is formed by merging data from multiple sources, and the data representativeness is optimized using industry standards such as the 3140 Ferroalloy Industry Coefficient Handbook.
Activity Description
This activity uses an intermediate frequency furnace to produce rare earth magnesium ferrosilicon alloys. The main raw and auxiliary materials for production include: magnesium ingots, rare earth alloys, ferrosilicon, scrap steel, etc. The raw materials are added to the medium frequency induction furnace according to a certain ratio for melting. After the raw materials are melted in the furnace, they enter the mold of the molding casting machine and are cooled to obtain the finished spheroidizing agent, which is then packaged and sold.
Process Description
Rare earth magnesium ferro-silicon alloy is a metallurgical material smelted with ferrosilicon as the base and added with magnesium and rare earth elements. It is a gray-black solid and is mainly used as a nodularizing agent in the production of ductile iron. It can make graphite distribute in a spherical shape and improve the strength of cast iron. It also has deoxidation and desulfurization functions.
Time period
2021
2026
Geography
China
Macroeconomic value
Business-as-Usual
Data validation
Yes
Technology
Current Technology
Technology comment
During the smelting process, the raw materials are added to the medium frequency induction furnace in a certain proportion for melting. After the raw materials are completely melted in the furnace, stirring begins. The melting time in each furnace is about 30 minutes, and the melting temperature is 1000~1400°C. After coming out of the furnace, it enters the mold of the molding casting machine and then is cooled. The casting time is 5 to 10 minutes. The casting temperature is about 1280 to 1320°C. After natural cooling for 20 minutes, the mold is ejected to obtain the finished product of the rare earth magnesium ferrosilicon alloy.