Cradle to Consumer
Identity ID
28547494-c914-4e4e-a0f6-a2d25d0ba607
Materials
Associated ID
a602545a-49db-4dd9-88e2-89be53930e72
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 tellurium precipitation tailings, a residual material generated in the non-ferrous metal smelting industry from copper-lead anode slime after the core processes of pressure leaching and reductive tellurium precipitation; this tailing has a complex composition and high impurity content, with the core valuable elements being copper and tellurium, possesses a certain acidity/alkalinity and corrosiveness, and can subsequently be used as a raw material for the recovery of valuable metals for resource recycling. The upstream core raw material is copper-lead anode slime, and the output stage is at the end of the pressure leaching - reductive tellurium precipitation smelting process. The dataset system boundary is the entire production process starting from the entry of copper-lead anode slime into the pressure leaching process to the completion of the reductive tellurium precipitation process and the generation of tellurium precipitation tailings; the dataset includes the main raw and auxiliary materials, energy and waste of the production process; 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 a pressure leaching process, covering the entire process from copper-lead anode mud to the production of tellurium tailings.
Process Description
Precipitated tellurium tailings are residual materials produced after pressure leaching and reduction of precipitated tellurium. They have the characteristics of complex composition and high impurity content. It mainly contains elements such as copper and tellurium, of which the copper content is 52% and the tellurium content is 17%; the tailings are generally in the form of fine mud or slurry, with high moisture content and certain acidity, alkalinity and corrosiveness. Because it contains a certain amount of heavy metal compounds, it has certain metal recycling value.
Time period
2021
2026
Geography
China,Jilin
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
First, the copper-lead anode mud and the tellurium-depleted solution are mixed to form a slurry, which is subjected to pre-leaching at 80 to 90°C. After stirring at constant temperature, the slurry is fed into an autoclave. Then, oxygen is introduced into the autoclave to raise the pressure to 0.8 MPa for oxygen pressure leaching. The reaction lasts for 4 to 7 hours to fully dissolve the metals. After the reaction, the slurry is depressurized and cooled, and the pressure leach solution and pressure leach residue are separated by pressure filtration. The pressure leach residue is sequentially subjected to bismuth removal and lead removal to eliminate impurities: bismuth is removed by hydrochloric acid leaching; for lead removal, EDTA disodium complexing agent is added to dissolve the lead. The impurity-free solid residue is returned to the alloying process for utilization. Meanwhile, the pressure leach solution is treated by reduction and tellurium precipitation: iron powder is added at 90 to 95°C for reduction, causing tellurium to precipitate and separate as copper telluride residue, and copper sulfate is recovered from the filtrate.