Cradle to Gate
Identity ID
155dfe50-9bcc-45e8-99ce-8853f773891b
Materials
Associated ID
f0f92442-ab6c-4b53-a5e7-48da5e6b018b
Included activities starts
Included activities ends
Description
This dataset represents the life cycle inventory (cradle-to-gate) of a copper-bearing magnetite-hematite ore processed by a combined dry separation-grinding-magnetic separation and flotation beneficiation process in Shandong. It covers all activities related to iron concentrate production, but excludes direct or indirect greenhouse gas emissions from the production of crushing and magnetic separation equipment, personnel travel, and daily office operations during the beneficiation process. The dataset was formed by consolidating data from multiple sources based on national standards such as the 'Manual of Coefficient for Iron Ore Mining and Dressing Industry (0810)', 'Emission Standard of Pollutants for Iron Ore Mining and Dressing Industry' (GB28661-2012), 'Cleaner Production Standard for Iron Ore Mining and Dressing Industry', and 'Limits of Energy Consumption per Unit Product in Iron Ore Beneficiation' (GB31337-2014), representing the average production level of copper concentrate generated from beneficiation of copper-bearing magnetite-hematite ore.
Activity Description
This dataset describes the combined beneficiation process of dry separation-grinding-magnetic flotation for copper-bearing magnetite-hematite in Shandong, with the following process steps:
1. Dry separation and handpicking
Dry separation: The ore is initially processed through a dry separator, which separates gangue based on the strong magnetism of magnetite, removing part of the low-grade ore and reducing the amount for subsequent processing.
Handpicking: For large-sized ores, manual sorting is conducted to remove obvious waste rocks, improving the efficiency of subsequent processing.
2. Stage Grinding
First-stage grinding: The ore enters the grinding equipment for coarse grinding, reducing particle size and achieving preliminary liberation of iron minerals, copper minerals, and gangue.
Second-stage grinding: Further fine grinding to ensure the mineral particle size is suitable for subsequent separation processes, guaranteeing full mineral liberation.
3. Low-Intensity Magnetic Separation
Perform low-intensity magnetic separation on the pulp to recover magnetite and remove most of the gangue minerals.
4. Fine Screening
Screen the pulp after low-intensity magnetic separation to separate minerals meeting the required particle size, ensuring the efficiency of subsequent separation processes.
5. Wet Magnetic Separation
Through wet magnetic separation, fine magnetic iron minerals are further recovered, and some impurities are removed to increase the grade of the concentrate.
6. High-Intensity Magnetic Separation
High-intensity magnetic separation is used to recover weakly magnetic minerals such as hematite, further separating non-magnetic minerals.
7. Direct Flotation
Direct flotation is conducted to separate and recover copper minerals such as chalcopyrite, producing copper concentrate, while removing residual gangue minerals to further improve the purity of the iron concentrate.
Process Description
The copper concentrate grade in this dataset is 15%, classified as a transition metal, and is one of the main products of the beneficiation process for copper-bearing magnetite-hematite ore.
Time period
2022
2026
Geography
China,Shandong
Geography comment
Forming Shandong's average data through the merging of multiple datasets
Macroeconomic value
Business-as-Usual
Data validation
Yes
Technology
Current Technology
Technology comment
The dry separation and manual separation process of Shandong iron ore is a multi-step and multi-technology integrated beneficiation process, which is suitable for processing complex iron ore types.