PYROLUSITE

作品数：28被引量：104H指数：6
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相关领域：冶金工程化学工程更多>>
相关作者：李浩然冯雅丽龙云飞粟海锋苏静更多>>
相关机构：北京科技大学中国科学院过程工程研究所广西大学更多>>
相关期刊：《Journal of Minerals and Materials Characterization and Engineering》《Chinese Journal of Catalysis》《Acta Metallurgica Sinica(English Letters)》《Chinese Journal of Chemical Engineering》更多>>
相关基金：国家自然科学基金国家科技支撑计划国家高技术研究发展计划广西壮族自治区自然科学基金更多>>
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Hydrogen-based mineral phase transformation mechanism investigation of pyrolusite ore
《International Journal of Minerals,Metallurgy and Materials》2024年第11期2445-2457,共13页Ruofeng Wang Shuai Yuan Yanjun Li Peng Gao Ru Li 
supported by the National Key Research and Development Program of China(No.2023YFC 2909000);the National Natural Science Foundation of China(No.52174240);the Major Science and Technology Projects of Xinjiang Uygur Autonomous Region(No.2023A03003-2);the XingLiao Talent Program of Liaoning Province(No.XLYC2203167);the Excellent Youth Fund Project of Liaoning Natural Science Foundation(No.2023JH3/10200010);the Fundamental Research Funds for the Central Universities(No.N23011026);the Open Foundation of State Key Laboratory of Mineral Processing(No.BGRIMM-KJSKL-2023-15).
Pyrolusite comprises the foremost manganese oxides and is a major source of manganese production.An innovative hydrogenbased mineral phase transformation technology to pyrolusite was proposed,where a 96.44%distributio...
关键词：REDUCTION PYROLUSITE phase transformation microstructural evolution 
Precise regulation of the phase transformation for pyrolusite during the reduction roasting process被引量：1
《International Journal of Minerals,Metallurgy and Materials》2024年第1期81-90,共10页Ruofeng Wang Peng Gao Shuai Yuan Yanjun Li Yingzhi Liu Cheng Huang 
financially supported by the National Key Research and Development Program of China (No.2023YFC2909000);the National Natural Science Foundation of China(No.52174240);the Open Foundation of State Key Laboratory of Mineral Processing (No.BGRIMM-KJSKL-2023-15)。
The mechanism involved in the phase transformation process of pyrolusite (MnO_(2)) during roasting in a reducing atmosphere was systematically elucidated in this study,with the aim of effectively using low-grade compl...
关键词：PYROLUSITE phase transformation reduction roasting microstructural evolution reaction mechanism 
CFD simulation for reduction of pyrolusite in fluidized beds被引量：2
《Particuology》2023年第8期109-120,共12页Jingyi Zhu Qi Liu Zheng Zou Qingshan Zhu Hongzhong Li Haoran Li 
grateful to the National Natural Science Foundation of China(grant No.21878304 and 21736010);the Strategic Priority Research Program of the Chinese Academy of Sciences(grant No.XDA29040200);the Science Fund for Creative Research Groups of the National Natural Science Foundation of China(grant No.21921005).
In this study,a CFD model coupled with heterogeneous flow structure,mass transfer equations,and chemical reaction kinetics is established to forecast the pyrolusite reduction reaction behavior.Compared with the previo...
关键词：Heterogeneous flow structure Chemical reaction kinetics CFD Bubbling fluidized bed Pyrolusite reduction reaction 
A facile one-pot hydrothermal synthesis as an efficient method to modulate the potassium content of cryptomelane and its effects on the redox and catalytic properties被引量：1
《Chinese Journal of Catalysis》2019年第6期940-952,共13页Huiyan Pan Xiaowei Chen Oihane Sanz Miguel A.Cauquia Jose M.Rodriguez-Izquierdoa Juan J.Delgado 
supported by the Ministry of Science and Innovation of Spain/FEDER Program of the EU(MAT2013-50137-EXP,MAT 2013-40823-R and ENE2017-82451-C3-2-R)~~
Cryptomelane has been widely applied as catalyst in oxidation reactions due to its excellent redox properties and low cost.Here,a novel one-pot hydrothermal synthesis using a potassium permanganate aqueous solution as...
关键词：CRYPTOMELANE PYROLUSITE Catalytic CO oxidation Hydrothermal synthesis Potassium content 
Preparation of sodium manganate from low-grade pyrolusite by alkaline predesilication-fluidized roasting technique
《Transactions of Nonferrous Metals Society of China》2018年第5期1045-1052,共8页Xiang-yi DENG Ya-li FENG Hao-ran LI Zhu-wei DU Jin-xing KANG Cheng-lin GUO 
Project(2015ZX07205-003)supported by the Major Science and Technology Program for Water Pollution Control and Treatment,China;Project(DY125-15-T-08)supported by the China Ocean Mineral Resources Research&Development Program;Projects(21176026,21176242)supported by the National Natural Science Foundation of China
Low concentration alkaline leaching was used for predesilication treatment of low-grade pyrolusite. The effects of initial NaOH concentration, liquid-to-solid ratio, leaching temperature, leaching time and stirring sp...
关键词：low-grade pyrolusite DESILICATION fluidized roasting sodium manganate 
The Effect of the Grinding Time on the Mechanical Activation of MnO2 Ore and Tea Plant Waste Carbonization Product
《Journal of Physical Science and Application》2017年第4期59-65,共7页Mustafa BOYRAZLI Elif ARANCI OZTURK Yunus Emre BENKLI 
In this study, pyrolusiteore （MnO2） was subjected to mechanical milling with a high-energy mill with carbonized tea plant wastes and the effect of grinding time on the crystal structure of the material was investiga...
关键词：Tea plant wastes CARBONIZATION mechanical grinding pyrolusite ore. 
Effects of sodium carbonate and calcium chloride on calcite depression in cationic flotation of pyrolusite被引量：6
《Transactions of Nonferrous Metals Society of China》2017年第8期1831-1840,共10页Shima RAHIMI Mehdi IRANNAJAD Akbar MEHDILO 
In the cationic flotation of pyrolusite using dodecyl ammine(DDA),the depressive effect of sodium carbonate andcalcium chloride on the calcite mineral was investigated systematically through flotation experiments,FTIR...
关键词：PYROLUSITE CALCITE FLOTATION depressant sodium carbonate contact angle 
Enhancement of bio-oxidation of refractory arsenopyritic gold ore by adding pyrolusite in bioleaching system被引量：6
《Transactions of Nonferrous Metals Society of China》2016年第9期2479-2484,共6页张旭 冯雅丽 李浩然 
Project(2015ZX07205-003)supported by the National Water Pollution Control and Treatment Science,China;Project(DY125-15-T-08)supported by China Ocean Mineral Resource R&D Association;Project(2012BAB07B05)supported by the National Key Technology R&D Program of China;Project(2012AA062401)supported by the National High-tech Research and Development Program of China
Pyrolusite was added in the bioleaching process to enhance the bio-oxidation process. Bioleaching tests at different dosages of pyrolusite ore, pH and inoculation amounts of Acidithiobacillus ferrooxidans were studied...
关键词：arsenopyritic gold ore PYROLUSITE BIO-OXIDATION Acidithiobacillus ferrooxidans 
Reductive leaching of manganese from low-grade pyrolusite ore in sulfuric acid using pyrolysis-pretreated sawdust as a reductant被引量：2
《International Journal of Minerals,Metallurgy and Materials》2016年第3期241-246,共6页Ya-li Feng Shi-yuan Zhang Hao-ran Li 
financially supported by the China Ocean Mineral Resource Research and Development Association (No. DY125-15-T-08);the National Key Technology Research and Development Program of China (No. 2012BAB07B05);the National High Technology Research and Development Program of China (No. 2012AA062401);the National Natural Science Foundation of China (Nos. 21176242 and 21176026)
Manganese （Mn） leaching and recovery from low-grade pyrolusite ore were studied using sulfiaric acid （H2SO4） as a leachant and pyrolysis-pretreated sawdust as a reductant. The effects of the dosage of pyrolysis-pr...
关键词：manganese ore treatment PYROLUSITE SAWDUST pyrolysis leaching MANGANESE 
Optimization of reaction conditions for the electroleaching of manganese from low-grade pyrolusite被引量：1
《International Journal of Minerals,Metallurgy and Materials》2015年第11期1121-1130,共10页Xing-ran Zhang Zuo-hua Liu Xing Fan Xin Lian Chang-yuan Tao 
financially supported by the "121" Scientific and Technological Supporting Demonstration Project of Chongqing, China (No. cstc2014zktjccx B0043);the Scientific Research and Technology Development Program of Guangxi, China (No. 2014BA10016)
In the present study, a response surface methodology was used to optimize the electroleaching of Mn from low-grade pyrolusite. Ferrous sulfate heptahydrate was used in this reaction as a reducing agent in sulfuric aci...
关键词：pyrolusite manganese ore treatment electroleaching reaction conditions optimization 
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