scholarly journals Seepage mechanism during in-situ leaching process of weathered crust elution-deposited rare earth ores with magnesium salt

2020 ◽  
Author(s):  
Defeng LIU ◽  
Zhenyue Zhang ◽  
Ruan Chi
Keyword(s):  
Rare Earth ◽  
Magnesium Salt ◽  
Leaching Process ◽  
Weathered Crust

Effect of potassium chloride on leaching process of residual ammonium from weathered crust elution-deposited rare earth ore tailings

2021 ◽  
Vol 163 ◽  
pp. 106800
Author(s):  
Jian Feng ◽  
Junxia Yu ◽  
Shuxin Huang ◽  
Xiaoyan Wu ◽  
Fang Zhou ◽  
...  
Keyword(s):  
Rare Earth ◽  
Potassium Chloride ◽  
Leaching Process ◽  
Weathered Crust

scholarly journals Experimental measurements of the permeability characteristics of rare earth ore under the hydro-chemical coupling effect

RSC Advances ◽  
2018 ◽  
Vol 8 (21) ◽  
pp. 11652-11660 ◽  
Author(s):  
Xiaojun Wang ◽  
Yulong Zhuo ◽  
Kui Zhao ◽  
Wen Zhong
Keyword(s):  
Rare Earth ◽  
Coupling Effect ◽  
Experimental Measurements ◽  
Permeability Characteristics ◽  
Leaching Process ◽  
Chemical Coupling ◽  
Coupling Processes

Two coupling processes—solution seepage and chemical replacement—occur in the in situ leaching process of ion-absorbed-rare-earth ore.

Column leaching process of rare earth and aluminum from weathered crust elution-deposited rare earth ore with ammonium salts

2016 ◽  
Vol 26 (11) ◽  
pp. 3024-3033 ◽  
Author(s):  
Zheng-yan HE ◽  
Zhen-yue ZHANG ◽  
Jun-xia YU ◽  
Zhi-gao XU ◽  
Yuan-lai XU ◽  
...  
Keyword(s):  
Rare Earth ◽  
Ammonium Salts ◽  
Column Leaching ◽  
Leaching Process ◽  
Weathered Crust

Leaching Process and Mechanism of Weathered Crust Elution-Deposited Rare Earth Ore

2019 ◽  
Vol 36 (5) ◽  
pp. 1021-1031
Author(s):  
Zhengyan He ◽  
Rong Zhang ◽  
Wenrui Nie ◽  
Zhenyue Zhang ◽  
Ruan Chi ◽  
...  
Keyword(s):  
Rare Earth ◽  
Leaching Process ◽  
Weathered Crust

Effect of a novel compound on leaching process of weathered crust elution-deposited rare earth ore

2018 ◽  
Vol 129 ◽  
pp. 63-70 ◽  
Author(s):  
Jian Feng ◽  
Fang Zhou ◽  
Ruan Chi ◽  
Xu Liu ◽  
Yuanlai Xu ◽  
...  
Keyword(s):  
Rare Earth ◽  
Leaching Process ◽  
Weathered Crust

Enhanced leaching process of a low-grade weathered crust elution-deposited rare earth ore with carboxymethyl sesbania gum

2013 ◽  
Vol 139 ◽  
pp. 124-131 ◽  
Author(s):  
Jun Tian ◽  
Jingqun Yin ◽  
Xuekun Tang ◽  
Ji Chen ◽  
Xianping Luo ◽  
...  
Keyword(s):  
Rare Earth ◽  
Low Grade ◽  
Leaching Process ◽  
Sesbania Gum ◽  
Weathered Crust

Novel solution injection technology for in-situ leaching of weathered crust elution-deposited rare earth ores

2016 ◽  
Vol 164 ◽  
pp. 248-256 ◽  
Author(s):  
Zhenyue Zhang ◽  
Zhengyan He ◽  
Junxia Yu ◽  
Zhigao Xu ◽  
Ruan Chi
Keyword(s):  
Rare Earth ◽  
Weathered Crust ◽  
Injection Technology

scholarly journals Leaching Process of Weathered Crust Elution-Deposited Rare Earth Ore With Formate Salts

2020 ◽  
Vol 8 ◽  
Author(s):  
Zhuo Chen ◽  
Zhenyue Zhang ◽  
Ruan Chi
Keyword(s):  
Rare Earth ◽  
Clay Minerals ◽  
Clay Mineral ◽  
Sodium Formate ◽  
Ammonium Formate ◽  
Swelling Ratio ◽  
Mineral Particles ◽  
Leaching Process ◽  
Weathered Crust ◽  
The Rare Earth

To strengthen the rare earth leaching process and weaken the hydration of clay minerals for preventing landslides, it is of great importance to adopt a green and sustainable leaching agent in the industry. In this work, the leaching process of weathered crust elution-deposited rare earth ores with formate salts (ammonium formate, potassium formate, and sodium formate) was investigated. The effects of formate salts on the linear swelling ratio and zeta potential of the clay minerals were studied. The experimental results showed that ammonium formate could effectively recover the rare earth elements from weathered crust elution-deposited rare earth as well as inhibit the leaching of impurity aluminum. At room temperature, when the ammonium formate concentration was 1% wt, the leaching efficiencies of rare earth and aluminum were 87 and 37%, respectively. Compared with traditional inorganic ammonium salts, the inhibition effect of impurity aluminum was obvious. In addition, the results of the linear swelling ratio in the clay minerals showed that the inhibit ability of formate salts on the hydration of clay minerals enhanced with the increase of the formate concentration, and the order of the inhabitation on the clay minerals followed: 1% ammonium formate > 1.5% potassium formate > 2.5% sodium formate > distilled water. Based on the double layer theory, ammonium formate and potassium formate could effectively compress clay mineral particles to avoid water intake, which could increase the interaction between clay mineral particles and greatly reduce the electronegative property of the clay minerals, so as to effectively reduce the surface hydration of clay minerals to decrease the swelling of rare earth ore. The results of this experiment have important and practical significance in guiding the prevention of landslides, promoting the in-situ leaching technology, and effectively protecting the ecological environment in mining areas.

Swelling of clay minerals during the leaching process of weathered crust elution-deposited rare earth ores by magnesium salts

2020 ◽  
Vol 367 ◽  
pp. 889-900 ◽  
Author(s):  
Zhuo Chen ◽  
Zhenyue Zhang ◽  
Defeng Liu ◽  
Xiaowang Chi ◽  
Wendou Chen ◽  
...  
Keyword(s):  
Rare Earth ◽  
Clay Minerals ◽  
Leaching Process ◽  
Weathered Crust ◽  
Magnesium Salts
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