Results 31 to 40 of about 3,401 (214)

Development of an analytical model for the extraction of manganese from marine nodules [PDF]

open access: yes, 2019
Multivariable analytical models provide a descriptive (albeit approximate) mathematical relationship between a set of independent variables and one or more dependent variables.
Castillo Segura, Jonathan Alejandro   +5 more
core   +2 more sources

Overview of Physical Characteristics of Deep-sea Polymetallic Nodules and the Effects on Mining and Transportation Processes

open access: yesHaiyang Kaifa yu guanli, 2023
This study aimed at determining the physical characteristics of deep-sea polymetallic nodules and analyzing their influence on the mining and transportation process, so as to guide engineering applications.
Huakun WANG   +4 more
doaj  

Process Mineralogy of Mud Fraction in Deep Sea Rare Earth

open access: yesKuangchan zonghe liyong, 2023
This is an essay in the field of process mineralogy. Deep sea rare earths are the fourth deep-sea mineral resource after polymetallic nodules, cobalt rich crusts and polymetallic sulphides.
Xiaoyu Li   +5 more
doaj   +1 more source

The contribution of microbial communities in polymetallic nodules to the diversity of the deep-sea microbiome of the Peru Basin (4130–4198 m depth) [PDF]

open access: yesBiogeosciences, 2020
Industrial-scale mining of deep-sea polymetallic nodules will remove nodules in large areas of the sea floor. The regrowth of the nodules by metal precipitation is estimated to take millions of years. Thus, for future mining impact studies, it is crucial
M. Molari   +8 more
doaj   +1 more source

Potential Short-Term Effects of Mine Tailings on Phytoplankton Assemblages in the Open Ocean

open access: yesJournal of Marine Science and Engineering, 2022
The disposal of mine tailings into the marine environment is considered an essential option to secure the economic efficiency of deep-sea mining, but it might adversely affects the ecosystem.
Dong Han Choi   +8 more
doaj   +1 more source

Optimization of parameters for the dissolution of Mn from manganese nodules with the use of tailings in an acid medium [PDF]

open access: yes, 2019
Manganese nodules are an attractive source of base metals and critical and rare elements and are required to meet a high demand of today’s industry. In previous studies, it has been shown that high concentrations of reducing agent (Fe) in the system are ...
Castillo Segura, Jonathan Alejandro   +6 more
core   +1 more source

Dynamic Traction of Deep-Sea Polymetallic Nodule Collector

open access: yesJournal of Marine Science and Engineering, 2023
The ocean is extremely rich in mineral resources. To cope with the shortage of land mineral resources, countries are focusing on the development of deep-sea mineral mining technology. Owing to its superior traction performance, the deep-sea polymetallic nodule collector (DPNC) has become the preferred solution for ocean mining.
Yuheng Song   +4 more
openaire   +2 more sources

Geomorphology of the Clarion Clipperton Zone, tropical North Pacific Ocean

open access: yesJournal of Maps, 2021
The Clarion Clipperton Zone (CCZ) hosts a valuable deposit of polymetallic nodules. Understanding the geology of this deposit is key to its effective exploration and future mining.
John Parianos, Pedro Madureira
doaj   +1 more source

Slurry electrolysis of ocean polymetallic nodule

open access: yesTransactions of Nonferrous Metals Society of China, 2010
Abstract The ocean poly-metallic nodule was leached by using slurry electrolysis process in HCl-NaCl medium. The leaching rates of Mn, Co, Cu and Ni in the ocean poly-metallic nodule are all above 97%. Meanwhile, the high purity of electrolytic MnO 2 is also obtained as an anode product.
Cheng-yan WANG   +4 more
openaire   +1 more source

Cobalt and Manganese Extraction from Ocean Nodules by Co-Processing with Steel Metallurgical Slag

open access: yesMetals, 2023
Polymetallic nodules, also called manganese nodules (due to their high content of this element), contain various valuable metals such as Cu, Ni and Co. These seabed minerals are a good alternative source of Co and Mn due to the decrease in the grade of ...
Kevin Pérez   +7 more
doaj   +1 more source

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