Cradle to Consumer
Identity ID
2e2a03ae-bebb-43cb-ae22-904b9c58d9e9
Materials
Associated ID
90c3b342-9a63-42da-897d-18598d36dd98
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 producing 1 kg of calcium silicon alloy by the electro-silicothermic process. Calcium silicon alloy is a binary alloy with silicon and calcium as its main components, used as a deoxidizer and desulfurizer in the iron and steel industry and as an inoculant in the cast iron industry. This dataset includes the input of raw and auxiliary materials such as ferrosilicon, fluorite and lime, and energy and energy media such as electricity and water; outputs include the product calcium silicon alloy, waste dust and smelting slag (recoverable for comprehensive utilization), and emissions to air and water. The data inventory is formed by merging multi-source data, and the data representativeness is optimized using industry standards such as the '3140 Ferroalloy Industry Coefficient Handbook'.
Activity Description
This activity uses the electrosilicothermal method to produce calcium silicon alloy. This method uses ferrosilicon and lime as the main raw materials, and fluorite as a flux, and performs high-temperature reduction smelting in a submerged arc furnace. Silicon in ferrosilicon acts as a reducing agent to reduce calcium oxide in lime at high temperatures to form a calcium-silicon alloy. At the same time, fluorite can effectively lower the melting point of slag, improve fluidity, and promote the reaction. The specific process is to add well-proportioned ferrosilicon, lime, fluorite and other furnace materials to the submerged arc furnace. After powering on, arc heat is used to melt the furnace materials and cause a reduction reaction. After the generated calcium silicon alloy liquid is separated from the slag, it is cast, cooled, crushed, and finished to obtain calcium silicon alloy products. The main processes include: (1) raw material preparation and batching; (2) electric furnace charging and smelting; (3) tapping and casting; (4) cooling and crushing; (5) finishing and packaging.
Process Description
Calcium silicon alloy is a binary alloy whose main components are silicon and calcium, and contains impurities such as iron and aluminum. This alloy is used as a deoxidizer and desulfurizer in the steel industry, and as an inoculant in the cast iron industry. Its deoxidation products are easily removed and can improve the properties of steel.
Time period
2015
2026
Geography
China,Henan
Macroeconomic value
Business-as-Usual
Data validation
Yes
Technology
Current Technology
Technology comment
The reducing agent used in the production of refined ferroalloys by the electrosilicothermal method is silicon alloy, and the heat energy required for smelting comes from silicothermal reaction and electrical energy. The electrosilicothermal method can be used to produce calcium silicon alloy with a calcium content of 15% to 20%. The raw materials are composed of ferrosilicon with a silicon content of 68% to 70%, lime and about 30% fluorite. The weight ratio of lime to ferrosilicon is 1.2. Smelting uses a refining electric furnace with a carbonaceous furnace lining.