Cradle to Gate
Identity ID
593cf480-f82b-43da-b1d6-902e47410919
Materials
Associated ID
f8e51a0b-4d95-41fe-be5e-7244b8c5e57c
Included activities starts
Included activities ends
Description
This dataset represents the life cycle inventory of raw coal production from "cradle to gate", covering all activities associated with raw coal production, but excluding coal washing processes, as well as direct or indirect greenhouse gas emissions from the production of equipment such as conveyors and mining vehicles, personnel travel during coal production, and daily office operations. The dataset was compiled from multiple sources based on national standards such as "Cleaner Production Standard for Coal Mining and Washing Industry" (HJ 446-2008), "Emission Standards of Pollutants for Coal Industry", and "Soil Environmental Quality Standards of the People's Republic of China", and is representative of the average production level in Shaanxi.
Activity Description
This dataset describes the extraction of raw coal. Coal mining processes in China can be divided into two main types: open-pit mining and underground mining, with the specific choice depending on geological conditions, coal seam thickness, depth of burial, and other factors. Open-pit mining includes drilling, blasting, excavation and loading, crushing, transportation, overburden dumping, pollutant treatment and disposal, and ecological restoration. Underground mining includes roadway development, coal extraction, mechanical equipment, underground and in-plant transportation, ventilation, pollutant treatment and disposal, and ecological restoration and governance.
Process Description
Shaanxi Province is rich in coal resources with a complete range of coal types and high-quality reserves. These resources are distributed across five major coalfields: the northern Shaanxi Carboniferous-Permian coalfield, the Weinan Carboniferous-Permian coalfield, the northern Shaanxi Triassic coalfield, the northern Shaanxi Jurassic coalfield, and the Huanglong Jurassic coalfield. These coalfields feature simple geological structures and large reserves, accounting for over 99% of the province’s total coal resources. Low-metamorphic coals, such as long-flame coal, non-caking coal, and weakly caking coal, make up 65% of the proven reserves, followed by gas coal, lean coal, and贫煤 (lean-lean coal). Coking coal, fat coal, and anthracite are relatively rare. The raw coal quality features ash content ranging from 6.12% to 43.57%, volatile matter from 4.68% to 53.54%, and total sulfur content from 0.23% to 7%. 57%, Qnet,ar net calorific value as-received basis 4037~7045 kcal/kg. The cleaned coal quality is ash content 2.84~22.17%, volatile matter 7.06~44.61%, carbon content 76.84~95.78%, Qnet,ar net calorific value as-received basis 7324~8694 kcal/kg.
Time period
2022
2026
Geography
China,Shaanxi
Geography comment
Forming Shaanxi Province's average data through merging data from multiple sources.
Macroeconomic value
Business-as-Usual
Data validation
Yes
Technology
Current Technology
Technology comment
Coal mining methods can be divided into two main categories: open-pit mining and underground mining, with the specific choice depending on geological conditions, thickness, and depth of the coal seam.