Article
Materials Science, Multidisciplinary
Sayaf Mustafa, Liqun Luo, Botao Zheng, Chenxi Wei, Niyonzima Christophe
Summary: The mineralogical and chemical changes in Chinese Xinjiang iron ore containing impurities, lead, and zinc as a result of reduction roasting were studied. It was found that reduction roasting process plays a major role in removing impurities such as sulfur, lead, and zinc from the iron ore.
Article
Engineering, Chemical
Liqun Luo, Xiaoxue Zhang, Hongyang Wang, Botao Zheng, Chenxi Wei
Summary: Iron in refractory iron ore was enriched through reduction roasting and magnetic separation, with the deep reduction-magnetic separation method found to be more suitable for iron enrichment. Phase transformations during reduction roasting were investigated, revealing the formation of main phases of magnetite and metallic iron in the reductively roasted product.
Article
Materials Science, Multidisciplinary
Shi-chao Wu, Zheng-yao Li, Ti-chang Sun, Jue Kou, Xiao-hui Li
Summary: In the reduction roasting and magnetic separation process of high-phosphorus iron ore, Na2CO3 had the most significant effect on iron recovery and dephosphorization, while the effect of CaF2 was negligible. Na2CO3 can promote the reduction of iron oxides and growth of iron particles, resulting in better iron recovery and separation of iron and phosphorus.
INTERNATIONAL JOURNAL OF MINERALS METALLURGY AND MATERIALS
(2021)
Article
Engineering, Chemical
V. Nunna, S. Hapugoda, M. I. Pownceby, G. J. Sparrow
Summary: Microwave-assisted reduction roasting of reject iron ore waste stream rich in goethite was used to produce high-grade concentrate, with optimal conditions leading to conversion of goethite to synthetic magnetite. Higher reduction temperatures led to greater conversion of goethite to magnetite, but caution is needed to avoid over-reduction which could complicate subsequent beneficiation processes.
MINERALS ENGINEERING
(2021)
Article
Engineering, Environmental
Shichao Wu, Tichang Sun, Jue Kou, Enxia Gao
Summary: The feasibility of high-efficiency separation of iron and phosphorus in high-phosphorus oolitic iron ore (HPOIO) was studied by reduction roasting and magnetic separation process (RRMSP) without a dephosphorization agent. The results showed that the full separation of iron and phosphorus was achieved, producing powdery reduced iron (PRI) with iron content of 92.77% and phosphorus content of 0.09%. Under optimal conditions, iron recovery and dephosphorization reached 68.70% and 93.50%, respectively. The method allowed for clean production without the addition of a dephosphorization agent, but further investigation of the economic benefits is needed.
PROCESS SAFETY AND ENVIRONMENTAL PROTECTION
(2023)
Article
Engineering, Chemical
Sayaf Mustafa, Luo Liqun, Niyonzima Jean Christophe, Bo-tao Zheng, Chen-xi Wei, Yanming Lei, Longchuan Yang, Ting Jia, Mohammed Kabashi
Summary: The novelty of deep reduction roasting lies in its ability to recover iron to high degrees and simultaneously remove a large proportion of zinc and lead impurities. This study performed deep reduction roasting at different temperatures and investigated the phase changes during ironmaking. Hematite, the main iron-bearing mineral in Xinjiang, China, was found to contain up to 91.35% iron and minor amounts of magnetite and iron silicate.
Article
Engineering, Chemical
Sunil Kumar Tripathy, Y. Rama Murthy, Nikkam Suresh, Lev O. Filippov
Summary: The study investigates the recovery of chromite from low-grade ferruginous ore using carbothermic magnetization route with conventional and microwave heating sources. Alteration of crystalline structure and magnetic property of gangue minerals enables the separation of low-grade ore through magnetic separation. The research achieved successful upgrading of the ore through optimal roasting conditions and under microwave radiation, with discussion of findings through characterization tools.
ADVANCED POWDER TECHNOLOGY
(2021)
Article
Engineering, Chemical
Sachida Nanda Sahu, Surendra K. Biswal
Summary: By using cow dung as a replacement, the physical and metallurgical characteristics of hematite iron ore pellets can be maintained for sustainable production; Various techniques were used in the experiment to characterize the pellet quality; Cow dung can be utilized as a renewable carbon resource for cleaner production of hematite iron ore pellets.
Article
Green & Sustainable Science & Technology
Shichao Wu, Tichang Sun, Jue Kou
Summary: This paper designed a co-reduction roasting followed by magnetic separation process to achieve the full recycling and clean utilization of converter sludge (CS) and upgrade high-phosphorus iron ore (HPIO), realizing the comprehensive and green utilization of CS.
JOURNAL OF CLEANER PRODUCTION
(2022)
Article
Engineering, Chemical
Shunyao Hui, Bo Li, Shiwei Zhou, Yonggang Wei
Summary: The aim of this study is to prepare ferronickel concentrates using spent cathode carbon as a reducing agent. Factors affecting the agglomeration and growth of metal particles are studied, as well as the migration of fluorine and the aggregation behavior of iron and nickel. The results show efficient recovery and utilization of nickel and iron in laterite nickel ores, providing a new method for the treatment of spent cathode carbon.
MINERALS ENGINEERING
(2023)
Article
Engineering, Chemical
Qiyan Xu, Zhanghan Gu, Ziwei Wan, Mingzhu Huangfu, Qingmin Meng, Zhiyou Liao, Baoguo Wu
Summary: The optimal operating parameters for the fluidized ironmaking process are a linear velocity of 0.6 m/s, a reduction pressure of 0.2 MPa, a reduction temperature of 1023 K, H-2 as the reducing gas, and a reduction time of 60 min. Cow dung can react with oxide in the ore powder to form a high melting point substance that inhibits the growth of iron whiskers and improves fluidization.
Article
Green & Sustainable Science & Technology
Shuo Liu, Zijian Su, Yujuan Cai, Tao Jiang, Yuanbo Zhang
Summary: An effective method for selectively separating arsenic from scrap copper anode slime using oxygen-enriched roasting and acid leaching has been proposed. This method restricts the volatilization of arsenic and allows for the extraction of selective leachable compounds.
JOURNAL OF CLEANER PRODUCTION
(2022)
Article
Engineering, Chemical
Anish Dubey, Abhay Shankar Patra, Abanindra Nath Sarkar, Abhirup Basu, Sunil Kumar Tripathy, A. K. Mukherjee, Atul Bhatnagar
Summary: A detailed study was conducted to assess the settling behaviour of iron slimes using a novel starch-based binary graft copolymeric flocculant, which showed outstanding settling performance compared to commercial reagents in terms of settling speed and turbidity removal during flocculation of iron-ore tailings.
MINERALS ENGINEERING
(2021)
Article
Engineering, Chemical
Shichao Wu, Tichang Sun, Jue Kou, Hongda Xu
Summary: A new approach for simultaneous iron recovery and dephosphorization from high-phosphorus oolitic iron ore using oxidation roasting-gas-based reduction (ORGR) and magnetic separation process was developed. The mechanism was investigated using thermodynamic calculations, X-ray diffraction (XRD), and scanning electron microscopy combined with energy dispersive spectroscopy (SEM-EDS). The results showed high iron recovery rate and low phosphorus content in the reduced iron, making it ideal for steelmaking.
Article
Metallurgy & Metallurgical Engineering
Shichao Wu, Tichang Sun, Jue Kou, Xiaohui Li, Chengyan Xu, Zekun Chen
Summary: The reduction roasting followed by magnetic separation process is effective in treating high-phosphorus oolitic iron ore. Sodium salts, particularly Na2SO4, were found to enhance the separation of iron and phosphorus. However, NaCl did not inhibit the reduction of phosphorus in iron minerals.
MINERAL PROCESSING AND EXTRACTIVE METALLURGY REVIEW
(2022)
Article
Engineering, Chemical
H. Sahoo, S. S. Rath, S. K. Jena, B. K. Mishra, B. Das
ADVANCED POWDER TECHNOLOGY
(2015)
Article
Engineering, Environmental
Hrushikesh Sahoo, Nishant Sinha, Swagat S. Rath, Bisweswar Das
CHEMICAL ENGINEERING JOURNAL
(2015)
Article
Engineering, Chemical
Subhashree Singh, Hrushikesh Sahoo, Swagat S. Rath, Ashok K. Sahu, Bisweswar Das
Article
Metallurgy & Metallurgical Engineering
Subhashree Singh, H. Sahoo, S. S. Rath, B. B. Palei, B. Das
JOURNAL OF CENTRAL SOUTH UNIVERSITY
(2015)
Article
Engineering, Chemical
Hrushikesh Sahoo, Swagat S. Rath, Danda S. Rao, Barada K. Mishra, Bisweswar Das
INTERNATIONAL JOURNAL OF MINERAL PROCESSING
(2016)
Article
Engineering, Chemical
Hrushikesh Sahoo, Swagat S. Rath, Bisweswar Das, Barada Kanta Mishra
MINERALS ENGINEERING
(2016)
Article
Engineering, Chemical
Swagat S. Rath, Nikhil Dhawan, D. S. Rao, B. Das, B. K. Mishra
Article
Engineering, Chemical
S. K. Jena, N. Dhawan, S. S. Rath, D. S. Rao, B. Das
SEPARATION AND PURIFICATION TECHNOLOGY
(2016)
Article
Engineering, Chemical
Swagat S. Rath, Subhashree Singh, Danda S. Rao, Binod B. Nayak, Barada K. Mishra
SEPARATION AND PURIFICATION TECHNOLOGY
(2017)
Article
Metallurgy & Metallurgical Engineering
Swagat S. Rath, Sunil Kumar Tripathy, Danda S. Rao, Surendra K. Biswal
TRANSACTIONS OF THE INDIAN INSTITUTE OF METALS
(2018)
Article
Metallurgy & Metallurgical Engineering
S. K. Jena, H. Sahoo, S. S. Rath, D. S. Rao, S. K. Das, B. Das
MINERAL PROCESSING AND EXTRACTIVE METALLURGY REVIEW
(2015)
Article
Engineering, Chemical
Hrushikesh Sahoo, Bhagyalaxmi Kar, Swagat S. Rath, D. Srinivas Rao, Bisweswar Das
Article
Engineering, Chemical
Hrushikesh Sahoo, Swagat S. Rath, Bisweswar Das
SEPARATION AND PURIFICATION TECHNOLOGY
(2014)
Article
Chemistry, Multidisciplinary
S. S. Rath, H. Sahoo, N. Dhawan, D. S. Rao, B. Das, B. K. Mishra
SEPARATION SCIENCE AND TECHNOLOGY
(2014)