Cradle to Gate
Identity ID
d46adeb1-24db-49b0-8569-ba17226ad0a9
Materials
Associated ID
bc95ac54-68d6-4be0-86fb-1840496023da
Included activities starts
Included activities ends
Description
This dataset represents the full life cycle inventory (cradle-to-gate) of processing vanadium-titanium magnetite in Sichuan using the method of "crushing, screening, dry tailings rejection, and wet magnetic separation for iron," covering all activities related to the beneficiation production of vanadium-titanium iron concentrates from the crushing stage to the production of titanium concentrate. However, it does not include direct or indirect greenhouse gas emissions from the production of crushing equipment, magnetic separation equipment, employee commuting, or daily office operations during the beneficiation 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)'. It represents the average production level for processing vanadium-titanium magnetite to produce titanium concentrate via "crushing, screening, dry discarding, and wet magnetic separation" in Sichuan.
Activity Description
This dataset describes the processing of vanadium-titanium magnetite in Sichuan Province through "crushing, screening, dry discarding, and wet magnetic separation for iron selection," with the production process as follows:
1. Crushing
Process flow:
Coarse crushing: Use jaw crushers or gyratory crushers to crush the ore to a larger particle size (50-100 mm). This is the initial stage of the crushing process.
Medium crushing: Further reduce the ore from coarse crushing to a medium particle size (10-30 mm) using cone crushers.
Fine crushing: Use fine crushers to further reduce the ore from medium crushing to a smaller particle size (<10 mm), providing suitable feed material for subsequent screening and dry tailings disposal processes.
2. Screening
Process flow:
Screening equipment: Use vibrating screens or other screening equipment to classify the crushed ore. Oversized material (larger particles) may need to be returned to the crushing stage for reprocessing, while undersized material (smaller particles) proceeds to the next dry tailings rejection step.
Fine crushing: Material after intermediate crushing is sent to a secondary vibrating screen for classification. Coarse material from the screen enters fine crushing (particle size <150mm), while fine material is sent to a roll press mill for ultra-fine crushing.
Screening and recirculation: The crushed material is again screened by a secondary vibrating screen. Oversized material is returned to the roll press mill for regrinding, while undersized material is conveyed to a fine ore bin for temporary storage. Dry tailings rejection
Process flow:
Dry magnetic separation: After screening, the ore enters a dry magnetic separator, where magnetic iron minerals are separated and retained for further processing, while non-magnetic materials are discarded as tailings. This step reduces the amount of material to be processed in subsequent stages by removing a large quantity of gangue minerals, thus lowering processing workload and costs. Iron ore separation by wet magnetic separation
Process flow:
Pulp preparation: The magnetic iron minerals, after dry tailings rejection, are mixed with water to form a pulp, ready for wet magnetic separation and subsequent ball milling for iron beneficiation.
Wet magnetic separation: The pulp is fed into wet magnetic separation equipment, where magnetic iron minerals are further separated from gangue minerals by magnetic field, producing high-grade iron concentrate. Non-magnetic materials are discharged as tailings.
Process Description
Titanium concentrate is mined and selected from ilmenite or titanomagnetite, and it is a raw material for producing titanium dioxide, which has a wide range of applications.
Time period
2022
2026
Geography
China,Sichuan
Geography comment
Forming Sichuan's average data through data merging from multiple sources
Macroeconomic value
Business-as-Usual
Data validation
Yes
Technology
Current Technology
Technology comment
"Crushing, screening, dry tailings rejection, and wet magnetic separation for iron beneficiation" is a mineral processing technology for vanadium-titanium magnetite, which gradually extracts high-grade iron minerals from the ore through multi-stage physical separation and processing techniques.