Cradle to Gate
Identity ID
694d4538-0215-4232-bd57-6fc5b0de2191
Materials
Associated ID
b882cde2-68c7-428e-ae9d-e596282f8409
Included activities starts
Included activities ends
Description
This dataset represents the life cycle inventory (cradle-to-gate) of underground mined magnetite ore in Hebei, covering all activities related to magnetite mining production from rock drilling to magnetite ore output, but excluding direct or indirect greenhouse gas emissions from the production of drilling rigs, transportation equipment, personnel commuting, and daily office operations during the mining production process. The dataset is compiled from multiple data sources based on national standards such as the 'Manual of Production and Emission Coefficients for the Iron Ore Mining and Processing Industry (0810)', 'Emission standard of pollutants for mining and mineral procressing industry (GB 28661-2012)', 'Cleaning production standard Iron ore mining and mineral processing industry', and 'The norm of the energy consumption per unit product of iron ore dressing(GB31337-2014)', and is representative of the average production level of underground magnetite mining in Hebei.
Activity Description
This dataset describes the underground mining of magnetite ore in Hebei Province. The process steps are as follows:
1. Drilling
Drilling is the process of creating boreholes in underground ore bodies to prepare for blasting. Drilling machines (such as drill rigs) are used to bore holes in the ore body for loading explosive agents. The accuracy and efficiency of drilling directly affect the subsequent blasting effectiveness and overall mining performance.
2. Blasting
Blasting involves detonating explosives in the pre-drilled holes to fragment the ore. Through blasting, the ore is broken into smaller pieces suitable for loading and transportation. Blasting operations require precise control of explosive quantities and timing to ensure uniform ore fragmentation and safe operations.
3. Loading
Loading is the process of loading blasted ore into mine cars or other transportation equipment. Equipment such as loaders and excavators are used to load the ore. The efficiency of loading is crucial to subsequent transportation and mining progress.
4. Transportation
Underground ore transportation is the process of moving loaded ore to hoisting points. Transportation methods include mine cars, electric haulers, or belt conveyors. The transportation system must be designed reasonably to ensure safe and efficient ore delivery.
5. Hoisting
Hoisting is the process of transporting underground ore to the surface via a hoisting system. Hoists or lifting equipment are primarily used to raise the ore to the surface. The safety and efficiency of hoisting equipment directly affect the overall mining operation.
6. Ventilation
Ventilation is the process of ensuring airflow in underground mines to provide fresh air and remove harmful gases. Ventilation systems include fans, air ducts, and air regulation devices, ensuring a suitable working environment underground.
7. Dewatering
Underground mine dewatering is the process of managing accumulated water within a mine, including groundwater and seepage. Equipment such as dewatering pumps and drainage pipes is used to remove the water and prevent its adverse effects on mining operations and equipment.
Process Description
Iron ore is the primary raw material for steel production, and steel is one of the core materials in modern industry and infrastructure development. China is the world's largest steel producer and has enormous demand for iron ore. Based on the natural types of ore and ore processing technological properties, ores are classified into three categories according to the TFe/FeO ratio. Among them, magnetite ore (TFe/FeO ≤ 3.5): steel-gray to dark gray, granular texture, with massive, banded, spotted, or disseminated structure.
Time period
2022
2026
Geography
China,Hebei
Geography comment
Forming Hebei's average data through merging data from multiple sources
Macroeconomic value
Business-as-Usual
Data validation
Yes
Technology
Current Technology
Technology comment
The process of underground mining of iron ore in Hebei includes procedures such as rock drilling, blasting, loading, transportation, hoisting, ventilation, and drainage.