scholarly journals Combined Mining and Pulp-Lifting of Ferromanganese Nodules and Rare-Earth Element-Rich Mud around Minamitorishima Island in the Western North Pacific: A Prefeasibility Study

Minerals ◽  
2021 ◽  
Vol 11 (3) ◽  
pp. 310
Author(s):  
Tetsuo Yamazaki ◽  
Naoki Nakatani ◽  
Rei Arai ◽  
Tsunehiro Sekimoto ◽  
Hiroyuki Katayama
Keyword(s):  
Rare Earth ◽  
Rare Earth Element ◽  
Earth Element ◽  
Construction Materials ◽  
Economic Feasibility ◽  
Northwest Pacific ◽  
Ferromanganese Nodules ◽  
Riser Pipe ◽  
High Concentrations ◽  
Lifting System

An examination of the technical and economic feasibility of the combined mining of the rare-earth element-rich mud (REE-rich mud) and ferromanganese nodules (FN) around Minamitorishima (Marcus) Island in Northwest Pacific is introduced. A previous study showed that the mining of REE-rich mud around Minamitorishima Island was not economically feasible. Therefore, in this study, three changes from the previous mining model to improve its economy are proposed. The first one is combined mining with FN in the area. The second one is introducing a pulp-lifting system that can lift both REE-rich mud and FN at high concentrations through a riser pipe. The third one is the reuse of waste mud and processed slag for construction materials. The economic evaluation results show a change from a slightly negative to quite positive economy depending on the mixing ratio of REE-rich mud and FN in the pulp-lifting. In addition, some technical approaches necessary to realize the combined mining method are introduced.

Rare earth element geochemistry of oceanic ferromanganese nodules and associated sediments

1981 ◽  
Vol 45 (4) ◽  
pp. 513-528 ◽  
Author(s):  
H Elderfield ◽  
C.J Hawkesworth ◽  
M.J Greaves ◽  
S.E Calvert
Keyword(s):  
Rare Earth ◽  
Rare Earth Element ◽  
Earth Element ◽  
Element Geochemistry ◽  
Ferromanganese Nodules

scholarly journals ECONOMIC FEASIBILITY OF RARE EARTH ELEMENT EXTRACTION FROM WYOMING COAL ASH/CHAR

2016 ◽  
Author(s):  
Aaron J. Enriquez ◽  
◽  
David C. Finnoff ◽  
J. Fred Mclaughlin ◽  
Davin A. Bagdonas
Keyword(s):  
Rare Earth ◽  
Rare Earth Element ◽  
Earth Element ◽  
Coal Ash ◽  
Economic Feasibility

Rare earth element zonation in Pacific ferromanganese nodules

1981 ◽  
Vol 45 (7) ◽  
pp. 1231-1234 ◽  
Author(s):  
H. Elderfield ◽  
C.J. Hawkesworth ◽  
M.J. Greaves ◽  
S.E. Calvert
Keyword(s):  
Rare Earth ◽  
Rare Earth Element ◽  
Earth Element ◽  
Ferromanganese Nodules

Geophysical interpretation of U, Th, and rare earth element mineralization of the Bokan Mountain peralkaline granite complex, Prince of Wales Island, southeast Alaska

2014 ◽  
Vol 2 (4) ◽  
pp. SJ47-SJ63 ◽  
Author(s):  
Anne E. McCafferty ◽  
Douglas B. Stoeser ◽  
Bradley S. Van Gosen
Keyword(s):  
Rare Earth ◽  
Rare Earth Element ◽  
Earth Element ◽  
Gamma Ray ◽  
Outer Edge ◽  
Peralkaline Granite ◽  
Ree Mineralization ◽  
Granite Complex ◽  
Oxide Minerals ◽  
High Concentrations

A prospectivity map for rare earth element (REE) mineralization at the Bokan Mountain peralkaline granite complex, Prince of Wales Island, southeastern Alaska, was calculated from high-resolution airborne gamma-ray data. The map displays areas with similar radioelement concentrations as those over the Dotson REE-vein-dike system, which is characterized by moderately high %K, eU, and eTh (%K, percent potassium; eU, equivalent parts per million uranium; and eTh, equivalent parts per million thorium). Gamma-ray concentrations of rocks that share a similar range as those over the Dotson zone are inferred to locate high concentrations of REE-bearing minerals. An approximately 1300-m-long prospective tract corresponds to shallowly exposed locations of the Dotson zone. Prospective areas of REE mineralization also occur in continuous swaths along the outer edge of the pluton, over known but undeveloped REE occurrences, and within discrete regions in the older Paleozoic country rocks. Detailed mineralogical examinations of samples from the Dotson zone provide a means to understand the possible causes of the airborne Th and U anomalies and their relation to REE minerals. Thorium is sited primarily in thorite. Uranium also occurs in thorite and in a complex suite of [Formula: see text] oxide minerals, which include fergusonite, polycrase, and aeschynite. These oxides, along with Y-silicates, are the chief heavy REE (HREE)-bearing minerals. Hence, the eU anomalies, in particular, may indicate other occurrences of similar HREE-enrichment. Uranium and Th chemistry along the Dotson zone showed elevated U and total REEs east of the Camp Creek fault, which suggested the potential for increased HREEs based on their association with U-oxide minerals. A uranium prospectivity map, based on signatures present over the Ross-Adams mine area, was characterized by extremely high radioelement values. Known uranium deposits were identified in the U-prospectivity map, but the largest tract occurs over a radioelement-rich granite phase within the pluton that is likely not related to mineralization. Neither mineralization type displays a well-defined airborne magnetic signature.

scholarly journals Applying design of experiments to evaluate economic feasibility of rare-earth element recovery

Procedia CIRP ◽  
2020 ◽  
Vol 90 ◽  
pp. 165-170
Author(s):  
Sidi Deng ◽  
Jesus Perez-Cardona ◽  
Aihua Huang ◽  
Yuehwern Yih ◽  
Vicki S. Thompson ◽  
...  
Keyword(s):  
Rare Earth ◽  
Design Of Experiments ◽  
Rare Earth Element ◽  
Earth Element ◽  
Economic Feasibility
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