scholarly journals Vacuum Gasification-Directional Condensation for Separation of Tellurium from Lead Anode Slime

Metals ◽  
2021 ◽  
Vol 11 (10) ◽  
pp. 1535
Author(s):  
Zhe Gao ◽  
Xiangfeng Kong ◽  
Jiafei Yi ◽  
Bin Yang ◽  
Baoqiang Xu ◽  
...  
Keyword(s):  
Base Material ◽  
Volatile Matter ◽  
Ecological Environment ◽  
Anode Slime ◽  
Solar Panels ◽  
Lead Anode ◽  
Distillation Temperature ◽  
System Pressure ◽  
Valuable Metals ◽  
Temperature Time

Tellurium is the indispensable base material of semiconductors in solar panels. Traditional tellurium recycling, a highly complicated separation process, has exhausted reagents and energy sources whilst producing waste residue and water containing multitudinous heavy metal that is hugely harmful to the ecological environment. A clean and eco-friendly vacuum distillation-directional condensation treatment was investigated for its potential to recycle tellurium from tellurium-rich lead anode slime (TLAS). The optimal distillation temperature and response time conditions of 1173 K and 50 min were obtained based on a large number of experiments. Gasification results indicated that under the optimal conditions of distillation temperature 1173 K, constant temperature time 50 min, and system pressure 5–15 Pa, 92% of tellurium was volatilized and enriched into the condenser from TLAS. Condensate results revealed that 88% of elemental tellurium was directly recovered in the volatile matter. The appropriate gasification-condensation processes realized a clean utilization to extract tellurium and separate multi valuable metals effectively.

Hydrometallurgical Pretreatment Process for the Recovery of Valuable Metals from the Lead Anode Slime

2013 ◽  
Vol 813 ◽  
pp. 153-156
Author(s):  
Wen Hua Wu ◽  
Zhi Jian Wang ◽  
Ji Bo Liu
Keyword(s):  
Recovery Rate ◽  
Noble Metals ◽  
Sodium Chlorate ◽  
Anode Slime ◽  
Base Metals ◽  
Oxidation Treatment ◽  
Total Recovery ◽  
Lead Anode ◽  
Crystalline Product ◽  
Valuable Metals

After stacking pre-oxidation treatment, lead anode slime was leached in sulfuric acid added with sodium chloride and oxidant of sodium chlorate. The leaching rates of As, Te, Sb, Bi and Cu are more than 98% with potential controlled at 500mV. And noble metals are left in the residue, which are separated from the base metals effectively. Through cooling and crystallizing out arsenate, the solution is reduced with potential controlled. According to reducing slag, the recovery rate of Te is 96.52%. Sb is recovered by neutralizing hydrolysis and the recovery rate is 95.2%. By the effect of iron powder, As, Bi and Cu are entirely reduced with the recovery rates of Bi and Cu to be 91.56% and 83.49%, respectively. The total recovery of As from the crystalline product and reducing slag achieves 91.56%.

scholarly journals The Use of Drone Photo Material to Classify the Purity of Photovoltaic Panels Based on Statistical Classifiers

Sensors ◽  
2022 ◽  
Vol 22 (2) ◽  
pp. 483
Author(s):  
Tomasz Czarnecki ◽  
Kacper Bloch
Keyword(s):  
Renewable Energy Sources ◽  
Base Material ◽  
Weather Conditions ◽  
High Rate ◽  
Solar Panels ◽  
Soil Dust ◽  
Photovoltaic Panels ◽  
Statistical Classifiers ◽  
Study Results ◽  
The Subject

The subject of this work is the analysis of methods of detecting soiling of photovoltaic panels. Environmental and weather conditions affect the efficiency of renewable energy sources. Accumulation of soil, dust, and dirt on the surface of the solar panels reduces the power generated by the panels. This paper presents several variants of the algorithm that uses various statistical classifiers to classify photovoltaic panels in terms of soiling. The base material was high-resolution photos and videos of solar panels and sets dedicated to solar farms. The classifiers were tested and analyzed in their effectiveness in detecting soiling. Based on the study results, a group of optimal classifiers was defined, and the classifier selected that gives the best results for a given problem. The results obtained in this study proved experimentally that the proposed solution provides a high rate of correct detections. The proposed innovative method is cheap and straightforward to implement, and allows use in most photovoltaic installations.

Preparation of pure SbCl3 from lead anode slime bearing high antimony and low silver

2010 ◽  
Vol 20 (12) ◽  
pp. 2397-2403 ◽  
Author(s):  
Hua-zhen CAO ◽  
Jin-zhong CHEN ◽  
Hai-jun YUAN ◽  
Guo-qu ZHENG
Keyword(s):  
Anode Slime ◽  
Lead Anode

A cleaning process for the removal and stabilisation of arsenic from arsenic-rich lead anode slime

2018 ◽  
Vol 176 ◽  
pp. 26-35 ◽  
Author(s):  
Yongming Chen ◽  
Nannan Liu ◽  
Longgang Ye ◽  
Shan Xiong ◽  
Shenghai Yang
Keyword(s):  
Anode Slime ◽  
Cleaning Process ◽  
Lead Anode

Selective Separation and Recovery of Valuable Metals by Vacuum Distillation of Copper Anode Slime Flotation Tailings

JOM ◽  
2019 ◽  
Vol 71 (7) ◽  
pp. 2413-2419 ◽  
Author(s):  
Guozheng Zha ◽  
Bin Yang ◽  
Chongfang Yang ◽  
Xinyu Guo ◽  
Wenlong Jiang
Keyword(s):  
Vacuum Distillation ◽  
Selective Separation ◽  
Anode Slime ◽  
Copper Anode ◽  
Flotation Tailings ◽  
Copper Anode Slime ◽  
Valuable Metals

φ –pH diagram of As–N–Na–H 2 O system for arsenic removal during alkaline pressure oxidation leaching of lead anode slime

2017 ◽  
Vol 27 (3) ◽  
pp. 676-685 ◽  
Author(s):  
Yun-long HE ◽  
Rui-dong XU ◽  
Shi-wei HE ◽  
Han-sen CHEN ◽  
Kuo LI ◽  
...  
Keyword(s):  
Arsenic Removal ◽  
Anode Slime ◽  
Pressure Oxidation ◽  
Lead Anode

Alkaline pressure oxidative leaching of bismuth-rich and arsenic-rich lead anode slime

2019 ◽  
Vol 26 (6) ◽  
pp. 689-700 ◽  
Author(s):  
Yun-long He ◽  
Rui-dong Xu ◽  
Shi-wei He ◽  
Han-sen Chen ◽  
Kuo Li ◽  
...  
Keyword(s):  
Anode Slime ◽  
Lead Anode ◽  
Oxidative Leaching

scholarly journals Effect of Acid Dissolution Conditions on Recovery of Valuable Metals from Used Plasma Display Panel Scrap

2017 ◽  
Vol 62 (2) ◽  
pp. 1173-1177
Author(s):  
Chan-Mi Kim ◽  
Peyala Dharmaiah ◽  
Hyo-Seob Kim ◽  
Jar-Myung Koo ◽  
Jae-Sik Yoon ◽  
...  
Keyword(s):  
High Energy ◽  
Acid Dissolution ◽  
Acidic Solutions ◽  
Acid Ratio ◽  
Valuable Metals ◽  
Plasma Display ◽  
Energy Ball ◽  
Favorable Conditions ◽  
Temperature Time ◽  
Subsequent Acid

AbstractThe objective of this particular study was to recover valuable metals from waste plasma display panels using high energy ball milling with subsequent acid dissolution. Dissolution of milled (PDP) powder was studied in HCl, HNO3, and H2SO4acidic solutions. The effects of dissolution acid, temperature, time, and PDP scrap powder to acid ratio on the leaching process were investigated and the most favorable conditions were found: (1) valuable metals (In, Ag, Mg) were recovered from PDP powder in a mixture of concentrated hydrochloric acid (HCl:H2O = 50:50); (2) the optimal dissolution temperature and time for the valuable metals were found to be 60°C and 30 min, respectively; (3) the ideal PDP scrap powder to acid solution ratio was found to be 1:10. The proposed method was applied to the recovery of magnesium, silver, and indium with satisfactory results.

Advances and significance of solar reflectors in solar energy technology in Pakistan

2018 ◽  
Vol 29 (4) ◽  
pp. 435-455 ◽  
Author(s):  
Sophia Akhtar ◽  
M Khurram Hashmi ◽  
Ishaq Ahmad ◽  
Rizwan Raza
Keyword(s):  
Solar Energy ◽  
Solar Spectrum ◽  
Base Material ◽  
Protective Layer ◽  
Solar Irradiation ◽  
Energy Crisis ◽  
Silver Coating ◽  
Energy Technology ◽  
Solar Panels ◽  
Energy Applications

Being located in the Sun Belt, Pakistan is rich in sunlight and receives a high mean irradiation. This condition is ideal for harnessing Sun’s power for solar energy applications by using solar reflectors. In spite of possessing such a rich solar irradiation area, Pakistan is facing energy crisis because most of the energy resources are still unexploited. This paper discusses the energy crisis of Pakistan and provides the solution by putting efforts into solar energy technology, as well as devising innovative ways to incorporate solar reflectors into a solar panel and get more power generation out of it by a diminutive modification. Reflectors are used in the solar technology to concentrate the sunlight onto the solar panels. They employ glass as a base material with a silver coating and a protective layer over it. They elevate the energy input of solar panels as the whole solar spectrum is reflected on them. Materials with more reflective properties are needed to be used to increase the reflectivity and efficiency of solar reflectors. In Pakistan, no significant work is done till now towards the development of solar reflectors. If solar reflectors are used with the solar panels, then their efficiency as well as production from the solar panels will be maximized.

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