Cradle to Gate
Identity ID
f8f19840-c4b0-4be4-b801-0fe2aa5af599
Materials
Associated ID
b83aa197-78d3-4591-b999-b45863345a74
Included activities starts
Included activities ends
Description
Coke is primarily used in the blast furnace ironmaking process in the metallurgical industry to reduce iron oxide in iron ore into metallic iron; this dataset includes major raw materials, energy inputs, atmospheric emissions, water discharges, and waste generated during production. Infrastructure such as production equipment manufacturing and facility construction is not included within the system boundary of this dataset; the dataset was compiled from data sourced from multiple origins; the coke production activities include coking, cooling, and screening processes. Ammonium sulfate is a by-product of this process.
Activity Description
The coke production activity includes processes such as coke refining, cooling, and screening. Ammonium sulfate is a by-product of this process.
Process Description
Ammonium sulfate is a white crystalline solid with a bitter taste and no odor, exhibiting strong hygroscopicity. Its molecular formula is (NH4)2SO4, with a relative molecular mass of 132.14 and a density of 1.77 g/cm³. Ammonium sulfate is readily soluble in water, and its aqueous solution is slightly acidic, having certain corrosive properties. It demonstrates high thermal stability and does not easily decompose, but at elevated temperatures, it decomposes and releases toxic gases. Ammonium sulfate has wide-ranging applications and holds significant value in chemical, metallurgical, fuel, and agricultural industries.
Time period
2021
2026
Geography
China
Macroeconomic value
Business-as-Usual
Data validation
Yes
Technology
Current Technology
Technology comment
Coking involves heating coal to above 1000°C under oxygen-deficient conditions, causing it to undergo pyrolysis reactions that produce coke and by-products (such as gas and tar). After coke formation, it requires cooling, screening, and quality inspection.