Cradle to Gate
Identity ID
704d0e22-d8a9-4751-a8ce-0ead9b20a2f2
Materials
Associated ID
d8f28886-3e17-4b53-9b1e-4ae615ea490a
Included activities starts
Included activities ends
Description
Industrial by-product gypsum, also known as flue gas desulfurization (FGD) gypsum, refers to gypsum generated from the reaction of calcium oxide with desulfurization and denitrification reagents in flue gas desulfurization and denitrification processes. Currently, industrial by-product gypsum mainly originates from flue gas desulfurization and denitrification, as well as waste materials from industries such as steel and copper metallurgy, phosphate chemical industry, and fertilizer production. This dataset includes primary raw materials, auxiliary materials, energy inputs, atmospheric emissions, and waste outputs from the production process. FGD gypsum is a by-product of this process. Infrastructure such as equipment manufacturing and plant construction is not included within the system boundary of the dataset. The life cycle inventory is compiled from data drawn from multiple sources.
Activity Description
The production process of pellet includes raw material mixing, pellet forming, drying, and roasting, with the roasting process primarily employing the grate-kiln technology. Unit process activities include energy use (especially fuel consumption during pellet roasting), auxiliary material use, and waste treatment along with pollutant emissions. Gypsum is a by-product of this process.
Process Description
Industrial by-product gypsum, also known as flue gas desulfurization (FGD) gypsum, refers to gypsum produced when calcium oxide reacts with desulfurization and denitrification agents during flue gas desulfurization and denitrification processes. Currently, industrial by-product gypsum mainly originates from flue gas desulfurization and denitrification, as well as waste generated by industries such as steel and copper metallurgy, phosphate chemical processing, and fertilizer production.
Time period
2021
2026
Geography
China
Macroeconomic value
Business-as-Usual
Data validation
Yes
Technology
Current Technology
Technology comment
The pelletizing process of iron ore pellets mainly adopts the grate-kiln technology. The raw pellets are roasted at high temperatures, forming hard spherical particles through physical and chemical changes.