Cradle to Consumer
Identity ID
2e6ca54a-dee4-4e46-ae6e-7b2c31264226
Materials
Associated ID
841c775d-4b24-4b68-92e9-216bdd44907c
Included activities starts
Included activities ends
Description
This dataset is a market dataset representing the consumption market of the region. The dataset includes the transport of the product from the gate to the consumption end, and the transport service is calculated based on the transport situation of the product in the region. The product represented by this dataset is oxidized concentrate, a fine-grained solid material obtained from gold ore after pressure oxidation treatment. It has the characteristic of high chemical activity, which can effectively break down the sulfide structure encapsulating gold in the gold ore, facilitating the extraction of valuable elements in the subsequent gold leaching process. Its core valuable components are gold and silver, accompanied by various impurity metal elements. The upstream raw material of this product is gold ore, and downstream it serves as the raw material for subsequent hydrometallurgical leaching or pyrometallurgical refining, making it a key intermediate product for achieving efficient recovery of gold elements in the gold ore hydrometallurgical leaching or pyrometallurgical refining industry chain. The dataset includes the main raw and auxiliary materials, energy and waste of the production process, while infrastructure such as production equipment manufacturing and plant construction is not included within the dataset boundary; the data inventory is formed by merging data from multiple sources.
Activity Description
The entire production process includes pressure oxidation, covering the whole process from gold ore to oxidized concentrate.
Process Description
Oxidized concentrate is a fine-grained solid obtained after pressure oxidation treatment. Its upstream raw material is gold ore, and it serves downstream as the core feed for subsequent hydrometallurgical leaching or pyrometallurgical refining. As a key intermediate product in the gold mine's subsequent hydrometallurgical leaching or pyrometallurgical refining chain, it enables efficient recovery of gold, possesses high chemical activity facilitating subsequent leaching for gold extraction, and still contains gold, silver, and associated impurity metals.
Time period
2021
2026
Geography
China,Xizang Autonomous Region
Geography comment
Generated by merging multiple data sets in this geographical location.
Macroeconomic value
Business-as-Usual
Data validation
Yes
Technology
Current Technology
Technology comment
The gold ore is first subjected to pre-acidification, with a portion of water added to form a slurry, and appropriate preheating is performed to ensure the temperature conditions in the autoclave. Pressure oxidation (POX) is then carried out in the autoclave at 190°C under an oxygen-rich environment to oxidize pyrite, arsenopyrite, and other sulfides, concurrently releasing the encapsulated gold and generating sulfuric acid and iron arsenate precipitates. The oxidized slurry is sent to a thickener, where the underflow enters countercurrent decantation (CCD) washing to clean the solids, while part of the supernatant is recycled back to pre-acidification and part is neutralized. Finally, a solid oxidized concentrate is obtained, which serves as feedstock for subsequent hydrometallurgical leaching or pyrometallurgical refining.