Article
Engineering, Environmental
Xin Wang, Yiwei Zhong, Yuzheng Kang, Jintao Gao, Zhancheng Guo
Summary: In this study, selective reduction roasting combined with water leaching was used to pretreat high zinc dust (HZD) in order to enhance the recovery of zinc. The results showed improved efficiency in the acid leaching of zinc, promoting the recycling of HZD.
PROCESS SAFETY AND ENVIRONMENTAL PROTECTION
(2022)
Article
Chemistry, Multidisciplinary
Aditya Ranjan Ray, Sujata Mishra
Summary: Modern scientific progress has made rare earth elements more important due to their specific chemical and physical properties. Proper handling and recovery of valuable products like rare earths will address environmental and societal issues caused by mining and industrial waste.
SUSTAINABLE CHEMISTRY AND PHARMACY
(2023)
Article
Engineering, Chemical
Jinlin Yang, Hangyu Li, Zongyu Li, Xingnan Huo, Shizhen Liao, Shaojian Ma, Hengjun Li
Summary: Gossan discarded from mining processes causes metal resource wastage and environmental hazards. This study focuses on zinc-containing gossan and investigates its purification through sulfuric acid leaching. The study identifies the factors affecting the purification process and provides optimal conditions for purifying zinc ferrite, which has significant industrial application value.
Article
Materials Science, Multidisciplinary
B. Deniz Karahan
Summary: Transforming industrial waste into high-value-added products is a new avenue in material science. This paper presents a comprehensive example of fabricating low-carbon footprint electrodes for rechargeable batteries. An integrated hydrometallurgical process is designed to produce metal oxide powders from electric arc furnace dust, which can be utilized as electrode materials in lithium-ion batteries.
MATERIALS CHEMISTRY AND PHYSICS
(2023)
Article
Engineering, Chemical
Limin Zhang, Yunyan Wang, Yong Ke, Zhumei Sun, Yun Li, Cong Peng, Mingfei Zhu, Yongjian Luo, Xiaobo Min
Summary: This study proposed a facile and efficient method for the dissolution of zinc ferrite using sulfuric acid leaching assisted by copper powder. The results showed that zinc ferrite could be completely dissolved under certain conditions, with the shortest dissolution time of 10 minutes. The leaching kinetics study revealed that the leaching process of zinc ferrite was controlled by surface chemical reaction.
SEPARATION AND PURIFICATION TECHNOLOGY
(2024)
Article
Chemistry, Physical
Zeqiang Xie, Guang Li, Yufeng Guo, Shuai Wang, Feng Chen, Lingzhi Yang, Ganghua Fu, Tao Jiang
Summary: The phase transformation behavior of zinc-containing dust was studied using a calcification roasting process, and zinc-iron separation behavior was examined by ammonia leaching. Results showed that increasing the calcium oxide to dust ratio promoted the conversion of zinc ferrite to zinc oxide. A zinc-iron recovery rate of 86.12% was achieved through ammonia leaching.
Article
Engineering, Chemical
Vivek Kashyap, Patrick Taylor, Evody Tshijik Karumb, Michael Cheshire
Summary: A method to enhance the leaching kinetics of zinc refinery residue (ZRR) with significant impact on the leaching of zinc, gallium, and indium was introduced in the study. Reduction roasting of zinc ferrite (ZF) eased the leaching process, achieving over 90% extraction of the target elements. Characterization of ZRR was conducted using various techniques including LA ICP-MS, SEM, XRD, and automated mineralogy.
MINERALS ENGINEERING
(2021)
Article
Green & Sustainable Science & Technology
Shaoqin Chen, Xiangfei Zeng, Qian Liang, Ling Hu, Shuyuan Chen, Dejun He, Yunhui Han, Zhisheng Zhao, Rong Huang, Yin Huang, Songshan Zhou, Jiqin Wang, Rong Wang, Jiancheng Shu, Mengjun Chen
Summary: In traditional zinc metallurgy, the low zinc leaching efficiency caused by the unique spinel structure of zinc ferrite (ZnFe2O4) can be improved by adopting reduced wet grinding, which selectively decomposes ZnFe2O4 to ZnO and Fe3O4. Under optimal conditions, zinc leaching efficiency reached 90.78%, which is higher than that of other methods such as dry ball milling and reduced leaching. Reduced wet grinding reduces particle size and increases the specific surface area of ZC, resulting in the distortion of ZnFe2O4 lattice and increased leaching efficiency. This novel approach can reduce hazardous waste production in the zinc metallurgic industry.
JOURNAL OF CLEANER PRODUCTION
(2023)
Article
Crystallography
Zeqiang Xie, Tao Jiang, Feng Chen, Yufeng Guo, Shuai Wang, Lingzhi Yang
Summary: In this study, CaO was used to degrade zinc ferrite and recover zinc through ammonia leaching. The experimental results demonstrated that the phase transformation of zinc ferrite to zinc oxide and dicalcium ferrite could be achieved completely with the addition of an appropriate amount of CaO. The ammonia leaching tests showed a high zinc leaching rate of approximately 90% under optimal roasting conditions.
Article
Metallurgy & Metallurgical Engineering
Yufang Wang, Kaixi Jiang, Hao Ma, Shuchen Qin, Chaozhen Zheng
Summary: This study investigated the behaviors of zinc and iron in the neutralized residue during pressure and hot acid leaching. The results showed that the acid to zinc mole ratio is the key factor for zinc extraction, while the extraction of iron is influenced by temperature and leaching time.
MINING METALLURGY & EXPLORATION
(2022)
Article
Materials Science, Multidisciplinary
Fusheng Niu, Shengtao He, Jinxia Zhang, Chen Wen
Summary: In this study, a new ionic liquid was used to leach zinc from metallurgical dust sludge, achieving a leaching rate of over 98%. The leaching process followed the nucleation contraction model and was controlled by interfacial mass transfer and solid film layer diffusion.
Article
Metallurgy & Metallurgical Engineering
Rashid Nadirov, Galymzhan Karamyrzayev
Summary: Zinc ferrite is a promising source of raw zinc, and acidic extraction using isopropanol is more efficient than aqueous extraction, achieving a dissolution rate of 77%.
MINING METALLURGY & EXPLORATION
(2022)
Article
Construction & Building Technology
Visa Isteri, Katja Ohenoja, Theodore Hanein, Hajime Kinoshita, Holger Kletti, Christiane Roessler, Pekka Tanskanen, Mirja Illikainen, Timo Fabritius
Summary: The production of ferrite-rich calcium sulfoaluminate belite (CSABF) cement clinker, containing MgO, from ladle slag, Fe-slag, and phosphogypsum was successfully scaled up from lab-scale to a pilot demonstration. Excess CaO was found to inhibit gehlenite formation in the clinker, but it also resulted in higher ferrite content. Microstructural analysis of the clinker revealed different ferrite phases with varying amounts of titanium and iron. This study demonstrates the potential of reducing CO2 emissions and improving resource efficiency in regions with a thriving metallurgical industry.
CEMENT AND CONCRETE RESEARCH
(2022)
Article
Chemistry, Physical
Isabella Lancellotti, Federica Piccolo, Katja Traven, Mark Cesnovar, Vilma Ducman, Cristina Leonelli
Summary: The study investigated the use of EAF slag and LS slag as precursors for AAM, both of which contain suitable components for producing alkali-activated materials. The leaching behavior results showed that all release values were below regulation limits, with bivalent ions well immobilized and amphoteric elements showing slight increase in release.
Article
Chemistry, Physical
Dong Chen, Suo Chen, Hongwei Guo, Wei Zhao, Peng Li, Bingji Yan, Shunhu Zhang
Summary: In this study, soft magnetic Fe3C was prepared by carburization roasting, magnetic separation, and acid leaching. The effects of these methods on the magnetic properties of Fe3C were investigated. The addition of Na2SO4 and NaOH were found to improve the carburization efficiency and enhance the dissolution of gangue. The obtained iron carbide material showed good soft magnetic performance.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)