Cradle to Consumer
Identity ID
42e43ce3-fd4a-4877-bb4e-6da94e536a65
Materials
Associated ID
7362aabb-736e-4c2f-a5ee-d8164e19f51f
Included activities starts
Included activities ends
Description
This dataset is a market dataset representing the consumption market of the region. The dataset includes the transport of the product from the gate to the consumption end, and the transport service is calculated based on the transport situation of the product in the region. This process refers to the production activity of smelting 1 kg of silicomanganese by the submerged arc furnace process. Silicomanganese is an alloy composed of manganese, silicon, iron and small amounts of carbon and other elements, with the grade FeMn68Si18, mainly used as a deoxidizer and additive in steelmaking, machinery and casting industries to improve the quality of steel and castings. This dataset includes the input of raw and auxiliary materials such as manganese ore, silica and coke, the electricity consumption of the electric furnace and the water consumption; the output includes the product silicomanganese and the by-product electricity (the high-temperature flue gas generated in the smelting process converts thermal energy into electrical energy through a waste heat boiler and generator set, which is output as a by-product), the waste silicomanganese slag, desulfurization slag and dedusting ash which can be recycled to cement plants, as well as emissions to water and air. The data inventory is formed by merging multi-source data, and the data representativeness is optimized using industry standards such as the 'Cleaner Production Standard - Iron and Steel Industry (Ferroalloy)' and the '3140 Ferroalloy Industry Coefficient Handbook'.
Activity Description
The submerged arc furnace used to produce silicomanganese employs a slag process. Coke is used as the principal reducing agent; manganese ore, dolomite, and silica are used as raw materials; and dolomite also serves as a flux. Production is continuous. From top to bottom, the furnace bath consists of four zones: the burden zone, coke zone, smelting zone, and alloy pool. Heat supplied by the electric arc sustains the reduction reactions in the furnace. The production process includes raw-material storage and handling, sintering, submerged arc furnace smelting, casting, finishing and packaging, and power generation from furnace gas.
Process Description
Silicon-manganese alloy is one of the most widely used ferroalloy products. It is mainly used as deoxidizer and additive in steelmaking, machinery, and foundry industries to improve the quality of steel and castings. It is also used to smelt special steel. It has been widely used in steelmaking and has become an indispensable composite deoxidizer and alloy additive in the steel industry.
Time period
2020
2026
Geography
China,Jiangsu
Macroeconomic value
Business-as-Usual
Data validation
Yes
Technology
Current Technology
Technology comment
Submerged arc furnaces use carbon as a reducing agent to reduce oxides in ores to produce ferroalloys. The mixed charge is added into the furnace, and the electrodes are buried in the charge. Heating is achieved by arc heat and resistance heat generated by the electric current passing through the charge. The molten metal and slag collect at the bottom of the furnace, and iron and slag are regularly tapped through the taphole. The production process is continuous.