Article
Materials Science, Multidisciplinary
Lyazzat Mussapyrova, Rashid Nadirov, Peter Balaz, Michal Rajnak, Radovan Bures, Matej Balaz
Summary: In this study, room-temperature sulfuric acid leaching of copper smelter slag powder in the presence of potassium dichromate was investigated to selectively extract copper from zinc and iron. Mechanical activation and the Taguchi method were used to enhance copper extraction efficiency. Optimal conditions were determined for both mechanical activation and leaching, leading to efficient recovery of valuable metals from secondary resources.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2021)
Article
Geochemistry & Geophysics
Rashid Nadirov, Galymzhan Karamyrzayev
Summary: The isopropanol-sulfuric acid-ozone system is an effective method to extract copper from copper smelter slag, with isopropanol playing a key role in increasing copper recovery. Ozone is proven to oxidize ferrous ions and cuprous ions are found in solution.
Article
Materials Science, Multidisciplinary
Yanglai Hou, Jiajie Yu, Zhiqiao Li, Yuanhao Hai, Ju Xu, Dingli Zheng
Summary: Chromium slag and copper smelting waste slag were used as raw materials to produce black ceramic tiles, reducing environmental pollution and increasing their utilization value. The color characteristics, phases, and microstructure of the ceramic tiles were analyzed, and the effects of different process parameters were investigated. The results showed that the optimal conditions for coloring the ceramic tiles were an Fe/Cr ratio of 1.5, sintering temperature of 1200 degrees C, holding time of 30 min, and cooling in the furnace. The ceramic tiles met the relevant national standards for compressive strength and leaching concentration of Cr(VI).
Article
Engineering, Chemical
Narangarav Tumen-Ulzii, Altansukh Batnasan, Burmaa Gunchin
Summary: This study investigates the selective dissolution of copper and iron from molybdenite concentrate to improve its quality. The results show that under optimized conditions, the extraction of Cu and Fe can achieve 81.4% and 74.1% respectively, with a minor loss of molybdenum.
MINERALS ENGINEERING
(2022)
Article
Materials Science, Multidisciplinary
Hong-Yang Wang, Guo-Hua Zhang, Kuo-Chih Chou
Summary: By using CaS as a sulfurization agent, this study successfully produced Cu-Fe-S matte with low iron content and high copper grade, providing a new approach for the production of metallic copper.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2021)
Article
Metallurgy & Metallurgical Engineering
Hui -bin Zhang, Ya-nan Wang, Yin -bin Zhu, Peng Ren, Bin Hu, Sheng-hang Xu, Hua-zhen Cao, Jun Zhou, Guo-qu Zheng
Summary: The accurate understanding of arsenic (As) species distribution and their leaching toxicity in copper smelting slag is crucial for its efficient and safe disposition. Various analytical techniques were employed to investigate the As species in the slag and evaluate their potential toxicity. The results revealed that As existed in various forms in the slag, including water-soluble As, Cu-As intermetallics, Cu-As sulfides, as well as As incorporated in fayalite and glassy silicates. Flotation of readily soluble As and Cu-As intermetallics was effective in reducing the leaching toxicity of slag tailings and meeting the regulatory thresholds for As set by USEPA and SEPA.
TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA
(2023)
Article
Engineering, Environmental
Shuqiong Luo, Yali Ge, Minghui Zhao, Lei Yang, Jun Ren
Summary: The synthesis type and heavy metal content have a significant impact on the performance of microwave hydrothermal synthesis. This study aimed to investigate the influence of microwave reaction time and copper content on the preparation of Cu-substituted tobermorite (Cu-tobermorite).
PROCESS SAFETY AND ENVIRONMENTAL PROTECTION
(2023)
Review
Engineering, Environmental
Eka Oktavia Kurniati, Federico Pederson, Hee-Jeong Kim
Summary: This paper examines and compares widely used industrial by-products such as steel slag, ferronickel slag, copper tailings, and copper slag in the construction industry, focusing on their chemical compositions, concrete performance, and environmental suitability. The study finds that these by-products can enhance specific mechanical properties of concrete when used as substitutes for cement and fine aggregate, and the environmental concerns are evaluated through leaching tests, with most heavy metal contents below specific standards.
RESOURCES CONSERVATION AND RECYCLING
(2023)
Article
Chemistry, Inorganic & Nuclear
B. U. Gauthama, B. Narayana, B. K. Sarojini, S. N. Kodlady, Y. Sangappa, Avinash K. Kudva, S. V. Raghu
Summary: In this study, a colourimetric/fluorimetric chemosensor-RL was developed to detect Cu2+ ions with high sensitivity and selectivity. The formation of a 1:1 complex between RL and Cu2+ was confirmed through experiments, and real-time detection was successfully performed on various samples. This research has significant application potential in the field of metal imaging.
INORGANIC CHEMISTRY COMMUNICATIONS
(2022)
Article
Engineering, Environmental
Li Guo, Zhongqiu Hu, Yaguang Du, Tian C. Zhang, Dongyun Du
Summary: A novel application utilizing mechanochemical pre-treating and alkali leaching was developed for selective leaching of arsenic from copper smelter flue dusts. Mechanical-activated powders showed improved arsenic leaching efficiency and reduced activation energy, while consuming less alkali and sulfides and requiring shorter leaching time compared to traditional methods. Mechanical force promoted arsenic leaching by changing physical properties of the powders and converting As5+ species into more mobile phases in alkali solution within sulfides.
JOURNAL OF HAZARDOUS MATERIALS
(2021)
Article
Metallurgy & Metallurgical Engineering
Zeynel Abidin Sari, M. Deniz Turan
Summary: This study investigated the dissolution behaviors of metals from copper slag using hydrogen peroxide and acetic acid as leaching agents. The results showed high metal extractions under optimized conditions. Raman spectroscopy indicated the coordination of metal ions. The dissolution process followed first order kinetics.
JOURNAL OF CENTRAL SOUTH UNIVERSITY
(2023)
Article
Environmental Sciences
Xiangqun Xu, Wei Wang, Chenyang Lv, Mengyu Ma, Leqi Shi, Dongyun Du, Tian C. Zhang, Honghai Shen
Summary: In this study, a solidified body (PG-S) was prepared by mechanical compression of a mixture of phosphogypsum, copper smelting slag, CaO, NaOH, and water. The resulting geopolymer material had a dense internal structure with a compressive strength of up to 21.3 MPa after curing for 28 days. The immobilization efficiency of PO(4)(3-)and F(-)reached 99.81% and 94.10% respectively, and the leaching concentration of heavy metals met the required standard. The study demonstrates the potential of utilizing phosphogypsum and copper smelting slag for resource utilization and backfill material.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Article
Environmental Sciences
Zhi Li, Guojun Ma, Xiang Zhang, Jianli Li
Summary: Waste copper slag contains valuable metal elements, and the apparent mobility and potential metal bioavailability of selected residual metals are in the order of Pb>Cu>Zn>As>Mo>Fe.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2021)
Article
Materials Science, Multidisciplinary
Da-wei Wang, Yan-jie Liang, Zhang Lin, Cong Peng, Bing Peng
Summary: This study proposed a novel method for recovering copper, zinc, and iron from copper slag through SO2-O-2 roasting-leaching-magnetic separation. The experimental results showed that high recovery rates and concentrations of the metals can be achieved under specific operating conditions.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2022)
Article
Multidisciplinary Sciences
Kamila Mizerna, Anna Krol
Summary: In this paper, the leaching behavior of Zn, Cu, Pb and Ni was evaluated in relation to the liquid to solid ratio (L/S), leaching conditions, and material properties. The highest amount of metals leached was observed in the long term maximum availability test under specific leaching conditions. Comparing different leaching tests, no strict trend was observed in the release of a given metal from different test materials. The tank test analysis showed that processes controlling leachability can result in immediate or prolonged release of metals.
SCIENTIFIC REPORTS
(2023)
Article
Metallurgy & Metallurgical Engineering
M. Deniz Turan, H. Soner Altundogan, Mustafa Boyrazli, Z. Abidin Sari, Hasan Nizamoglu, Aslihan Demiraslan
TRANSACTIONS OF THE INDIAN INSTITUTE OF METALS
(2019)
Article
Materials Science, Multidisciplinary
M. Deniz Turan, Z. Abidin Sari, Aslihan Demiraslan
METALLURGICAL AND MATERIALS TRANSACTIONS B-PROCESS METALLURGY AND MATERIALS PROCESSING SCIENCE
(2019)
Article
Green & Sustainable Science & Technology
M. Deniz Turan, Zeynel Abidin Sari, Murat Erdemoglu
JOURNAL OF SUSTAINABLE METALLURGY
(2020)
Article
Metallurgy & Metallurgical Engineering
M. Deniz Turan, J. Pedro Silva, Z. Abidin Sari, Rashid Nadirov, Norman Toro
Summary: Chelating agents and hydrogen peroxide are essential for metal extraction from chalcopyrite concentrate, with mechanical activation playing a key role in increasing extraction efficiency. Application of ultrasound enhances metal extraction efficiency in the leaching process.
TRANSACTIONS OF THE INDIAN INSTITUTE OF METALS
(2022)
Article
Engineering, Chemical
M. Deniz Turan, Zeynel Abidin Sari, Hasan Nizamoglu
Summary: This study found that metals can be selectively extracted based on leaching temperature under oxalic acid leaching conditions, and investigated the effects of various parameters on metal extraction.
JOURNAL OF THE TAIWAN INSTITUTE OF CHEMICAL ENGINEERS
(2021)
Article
Metallurgy & Metallurgical Engineering
Z. Abidin Sari, M. Deniz Turan, Hasan Nizamoglu, Aslihan Demiraslan, Tolga Depci
MINING METALLURGY & EXPLORATION
(2020)