Cradle to Gate
Identity ID
e5ecc246-c26e-4c20-b6d1-97519fe7a8cb
Materials
Associated ID
f8e51a0b-4d95-41fe-be5e-7244b8c5e57c
Included activities starts
Included activities ends
Description
This dataset represents a life cycle inventory (cradle-to-gate) from coal mining to raw coal production, covering all activities related to 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 commuting, and daily office operations during coal production. The dataset was compiled from multiple data sources based on national standards such as "Cleaner Production Standard for Coal Mining and Preparation Industry" (HJ 446-2008), "Emission Standards of Pollutants for the Coal Industry", and "Soil Environmental Quality Standards of the People's Republic of China", and is representative of the average production level in Yunnan.
Activity Description
This dataset describes the extraction of raw coal. Chinese coal mining processes 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 coal seams. Open-pit mining includes drilling, blasting, loading, crushing, transportation, waste dumping, pollution treatment and disposal, and ecological restoration. Underground mining includes tunneling, coal extraction, mechanical equipment, underground and in-plant transportation, ventilation, pollution treatment and disposal, and ecological restoration and management.
Process Description
Yunnan Province is rich in coal resources and is one of the coal-rich provinces in southern China. It has certain advantages in reserves, variety, and occurrence conditions. Yunnan's coal resources are abundant and widely distributed, with a relatively complete range of coal types. The coal seams are generally buried deeply. The main coalfields and their distributions include: Zhenxiong Coalfield, Xuanwei Coalfield, Enhong Coalfield, Guishan Coalfield, Pinglang Coalfield, Xiangyun Coalfield, and Huaping Coalfield. The main coal types include anthracite, coking coal, gas coal, fat coal, lean coal, thin coal, and lignite. The raw coal quality features ash content ranging from 6.18% to 58.85%, volatile matter from 7% to 62.85%, total sulfur from 0.13% to 21%, and carbon content from 62.53% to 91%. 58%, Qnet,ar as-received low calorific value 3295~7334 kcal/kg.
Time period
2022
2026
Geography
China,Yunnan
Geography comment
Forming average data for Yunnan Province by merging data from multiple sources.
Macroeconomic value
Business-as-Usual
Data validation
Yes
Technology
Current Technology
Technology comment
Coal mining methods in China 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 burial of the coal seam.