Cradle to Consumer
Identity ID
f7462c5d-69fa-46a3-abdf-476946c76dc5
Materials
Associated ID
05562a9e-eed7-4001-86b9-78d7ac5bec80
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 electrolytic lead, a high-purity refined lead product with a lead content of 99.994%, belonging to typical heavy metals. It has the physical characteristics of being soft and dense, with strong ductility and excellent plasticity, while also possessing excellent acid and alkali corrosion resistance and radiation shielding performance. It has low chemical activity and strong toxicity, and both its application and production stages require strict safety and environmental control; the upstream raw material of this product is crude lead, which is obtained through an electrolytic refining process, and downstream it is widely used in battery manufacturing, radiation protection materials, metal solders, building anti-corrosion materials, and chemical corrosion-resistant equipment, making it the core basic raw material for the production of lead-based industrial products. 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 electrolytic lead refining production process uses the fluosilicate medium electrolysis method, including the manufacturing of starter sheets, lead electrolysis, refining, and anode mud washing and filtration, covering the entire process from crude lead to electrolytic lead.
Process Description
Refined lead is a typical heavy metal with soft, ductile and corrosion-resistant properties. The lead content is 99.994%. Its good ductility and plasticity make it easy to cast, roll and weld. The upstream raw material of this product is crude lead, which is produced through the electrolytic refining process. Lead has excellent resistance to acid and alkali corrosion and has a good shielding effect on radiation. Therefore, it is widely used in battery manufacturing, radiation protection, solders, building materials, chemical equipment and other fields. Because lead has low chemical activity and strong toxicity, its use usually requires strict safety and environmental management.
Time period
2021
2026
Geography
China,Hunan
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 electrolytic lead refining production process is fluorosilicate dielectric electrolysis, including the manufacturing of starter plates, lead electrolysis, refining, anode mud washing and filtration and other processes. First, a small amount of cathode lead precipitated in the lead electrolysis process is heated and melted in the starter pot to make lead sheets. Then, together with the conductive copper rods, they are sent to the starter manufacturing unit to make cathodes, and they are laid out according to the center distance requirements of the same pole.
Secondly, after the prepared cathode and anode plates are installed into the electrolytic tank, the lead fluorosilicate solution flowing down from the high-level electrolyte tank is injected into the electrolytic tank for cyclic electrolysis. The electrolysis temperature is 10-50°C and the electrolysis cycle is 7 days. After the cathode lead precipitated during the electrolysis process is washed in the washing tank, except for a small part that is sent to the initial electrode plate pot to produce cathode plates, the remaining part is sent to the electric lead pot for refining and impurity removal; the lead electrolyte is pumped from the circulation tank to the high-level tank for recycling, and an appropriate amount of fluorosilicic acid and additives are regularly added to the circulation tank.
Then, the lead precipitated from the cathode is sent to the lead pot for oxidation and refining to further remove arsenic, antimony, tin and other impurities. The qualified lead liquid after impurity removal is sent to the electric lead ingot casting unit through the lead pump to cast ingots to obtain electric lead products; the refined slag produced by the electric lead pot is sent to the reverberatory furnace for processing.
Finally, the residual electrodes taken out of the lead electrolytic cell are washed by the residual electrode washing machine and returned to the preliminary refining process of the fire method; the washed anode mud and the anode mud sucked by the electrolytic tank vacuum are sent to the mechanical stirring tank for heating and washing to recover the water-soluble lead and fluorosilicic acid entrained in the anode mud. The washed anode mud is filtered using a chamber filter, the filtrate and wash water are returned to the system, and the anode mud after press filtering is sent to the precious lead workshop for further recycling.