Cradle to Consumer
Identity ID
fbb9b018-8ebc-4d17-a43b-d74105ac8a5d
Materials
Associated ID
780e5789-ccf3-4817-bc3b-018136455cbf
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 ferrosilicochromium by the submerged arc furnace process. The main components of ferrosilicochromium are silicon, chromium and iron, generally with Cr>30% and Si>35%; it is mainly used as an intermediate alloy for producing medium-, low- and micro-carbon ferrochrome by the electro-silicothermic process, and is used as a deoxidizer (replacing ferrosilicon) and chromium additive in steelmaking. This dataset includes the input of raw and auxiliary materials such as chromium ore, silica, coke and electrode paste, and energy and energy media such as electricity and water; outputs include the product ferrosilicochromium, waste slag and dust (recoverable to cement plants), and 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
This production activity adopts the "one-step method" to produce silicon-chromium alloy. Under high-temperature conditions, C is used as a reducing agent, and chromium ore, coke, silica and other raw materials are smelted in a submerged arc furnace to reduce Cr2O3 and other oxides (such as FeO) in the chromium ore. The main process flows include: raw material section (finishing, crushing and screening of chromium ore and silica; finishing and screening of coke); smelting section (smelting, tapping, casting) and finished product packaging section (crushing, packaging, testing, warehousing).
Process Description
Silicon-chromium alloy is an iron alloy mainly composed of silicon, chromium and iron, also known as silicon-chromium ferroalloy. It is mainly used as a master alloy for the production of medium-, low-, and micro-carbon ferrochromium by electrosilicothermal method. Used as deoxidizer (replacing ferrosilicon) and chromium additive in steelmaking. Generally, it contains Cr>30%, Si>35%, and the balance is iron and a small amount of impurities.
Time period
2018
2026
Geography
China,Henan
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.