Cradle to Consumer
Identity ID
18a991f7-79a4-4e46-bdc5-e61a2fa7b2d7
Materials
Associated ID
aaee2dc3-1a78-4e86-8c5e-e817aad05a07
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 process of producing ferrophosphorus as a by-product of yellow phosphorus by the submerged arc electric furnace. Ferrophosphorus is a symbiotic compound containing 20-26% phosphorus and 0.1-6% silicon, which can alter the corrosion resistance and machinability of steel. Ferrophosphorus is used as an alloying agent in the steelmaking industry, and can also be used to produce phosphates. This dataset includes the input of raw and auxiliary materials such as phosphate ore, silica and electrodes, and energy and energy media such as electricity, water and coke; the output includes the product ferrophosphorus, as well as the recyclable waste slag, dedusting ash and yellow phosphorus tail gas, as well as emissions to water and air. The data inventory is formed by merging data from multiple sources.
Activity Description
Ferrophosphorus is obtained as a by-product of phosphorus production in an electric furnace. The electrical resistance of the furnace burden and the arc between the electrodes convert electrical energy into heat, heating the burden to 1,500-1,600°C until it melts. Reduction reactions produce phosphorus vapor, carbon monoxide, phosphine, hydrogen sulfide, silicon tetrafluoride, slag, ferrophosphorus, and other products. This production activity includes: 1) raw-material preparation; 2) phosphorus production and collection; 3) phosphorus-sludge recovery; 4) yellow-phosphorus off-gas purification and utilization; 5) flue-gas scrubbing; and 6) visible-plume removal.
Process Description
Ferrophosphorus is obtained from phosphorus-making electric furnaces. It is a compound containing 20-26% phosphorus and 0.1-6% silicon, which can change the corrosion resistance and machinability of steel. Ferrophosphorus is used as an alloying agent in the steelmaking industry and can also produce phosphates.
Time period
2020
2026
Geography
China,Gansu
Macroeconomic value
Business-as-Usual
Data validation
Yes
Technology
Current Technology
Technology comment
Ferrophosphorus used in the metallurgical industry is mostly smelted in submerged arc furnaces. Due to the volatility of phosphorus, closed submerged arc furnaces are employed. The raw materials include phosphate rock, iron filings, coke, silica, etc. In current production, ferrophosphorus, a by-product of yellow phosphorus production, is often added to the charge to improve smelting performance and produce high-quality ferrophosphorus. In a closed submerged arc furnace, phosphate rock (mainly Ca3(PO4)2) is mixed with fluxes such as coke and silica, and reacts at high temperature to produce phosphorus gas, calcium silicate, and CO gas.