An Automatic Method for Clay Minerals …
This paper presents an automatic method for clay minerals extraction from Landsat 8 OLI image based on band rationing and principal component analysis methods. Firstly, the …
Clay minerals in nonaqueous extraction of bitumen from …
In this work, a simulated non-aqueous extraction process was developed with the primary purpose of generating clay mineral samples. The clay minerals were studied by mineralogical and microstructural analyses as well as reactivity analyses, such as cation exchange capacity and specific surface area, in relation to the non-aqueous oil sands ...
Microbial dissolution of clay minerals as a source of iron …
The microbial extraction of structurally coordinated Fe3+ from clay minerals after their deposition in marine sediments may liberate a fraction of iron previously considered unavailable, and may ...
Processes | Free Full-Text | Effect of Clay Minerals and Rock …
In traditional kerogen pyrolysis experiments, the effects of minerals and rock fabric on the pyrolysis products were ignored. To further clarify the role of the mineral matrix and rock fabric on hydrocarbon generation and retention, a closed anhydrous pyrolysis experiment was conducted on core plugs, powdered rock and kerogen from a …
Enhanced alumina extraction from kaolin by …
The present work aims to increase the alumina percentage recovery (APR) extracted from kaolin via the addition of 0.5–4.0 wt.% charcoal as a thermochemical fluxing agent in the lime-sintering process at 1260–1360°C. The transformation, microstructural and microtextural changes and self-disintegration performance were characterized using …
Clay Minerals from the Perspective of Oil and Gas …
The clay minerals e.g. kaolinite, smectite, illite, chlorite, etc. are ubiquitous in the targeting rocks of oil and gas exploration. During the early age (1940s) of worldwide oil exploration, clay minerals were studied to predict the quality of organic rick source rock and generation mechanism when scientists tried to investigate the origin of ...
A review of ion adsorption clay as a high potential source of …
Rare earth elements (REEs) have emerged as a critical component in manufacturing various products for green technology. This paper aims to comprehensively review the formation of ion adsorption clay, REEs weathering profile, clay minerals' potential in adsorbing REEs, ion-exchange mechanism and method for REEs …
Lithium extraction from clay-type lithium resource using …
Semantic Scholar extracted view of "Lithium extraction from clay-type lithium resource using ferric sulfate solutions via an ion-exchange leaching process" by Zhu Li et al. ... investigated a novel membrane solvent extraction (MSX) process for the recovery and separation of lithium (Li) from clay minerals using a cation exchange organic ...
Potential of Sentinel-2 data for alteration extraction in coal-bed
The results show that: 1) compared with band math and PCA methods, the different extraction methods were suitable for different minerals; 2) the extraction results of iron and clay minerals were most accurate (78.33% and 76.67%, respectively) with XRD analysis; 3) the highest rate of change of the feature edge slope was up to 39% with a ...
US20210207243A1
Abstract. Processes for extracting lithium from a clay mineral and compositions thereof are described. The extraction process includes providing a clay mineral comprising lithium, mixing a cation source with the clay mineral, performing a high-energy mill of the clay mineral, and performing a liquid leach to obtain a lithium rich leach solution.
Desorption technologies for remediation of cesium
This review summarizes the mechanisms for desorbing and extracting cesium (Cs+) from clay minerals and soil. Most techniques use ion exchange with acids, cations, polymers, and surfactants. Some improve desorption of Cs+ from clay minerals, while surfactants and polymers expand the interlayer. Mixtures of acids/polymers, …
Adsorption of rare earth elements in regolith-hosted …
Global resources of heavy Rare Earth Elements (REE) are dominantly sourced from Chinese regolith-hosted ion-adsorption deposits in which the REE are …
Molecular geochemistry of radium: A key to
Cations forming OS complexes are more easily desorbed by cation exchange reaction than IS complexes. Thus, Cs + is strongly adsorbed on clay minerals, making its extraction challenging, while REE 3+ are weakly adsorbed, causing their high extraction rates by the cation exchange reaction. Hence, investigating the adsorption structure at the ...
A review of lithium extraction from natural resources
International Journal of Minerals, Metallurgy and Materials - Lithium is considered to be the most important energy metal of the 21st century. ... Lithium extraction from clay-type lithium resource using ferric sulfate solutions via an ion-exchange leaching process, Hydrometallurgy, 206(2021), art. No. 105759. U.S Geological Survey, Mineral ...
Minerals | Free Full-Text | From Clay Minerals to Al2O3 …
This research was performed to obtain high-value products from clay materials. High-grade nanometric delta-alumina (δ-Al2O3) was obtained from the modification of clay-based minerals, which could be potentially applied in the form of thin film for novel optoelectronic applications. The selective recovery process of alumina from …
Separation of Lithium from Aluminum-Containing Clay Mineral …
The Al(OH) 3 sorbents were used to selectively extract Li from clay mineral leachate solutions. 6,15 The predominant constituents of the leachate solutions were Li, Na, and K in a sulfate stream. The Li–Al layered double hydroxide (LDH) sulfate precipitate obtained was dissolved in dilute H 2 SO 4, and the resultant solution was used as the ...
The Characterization of Clay Minerals and Adsorption Mechanism onto
Clay minerals are hydrophilic materials, the correct choice of degassing temperature is very important; the degassing process should be able to remove all of weakly absorbed water molecules, the structural water molecules must not be affected by the degassing process. High vacuum condition and narrow range of degassing …
Speciation and sorption structure of diphenylarsinic acid in soil clay
A sequential extraction procedure (SEP) was employed to elucidate the speciation of DPAA in the clay mineral fractions of soils. Pearson's correlation analysis was used to derive the relationship between DPAA sorption and the selected physicochemical properties of the clay mineral fractions.
(PDF) Lithium Extraction from Lithium-Bearing Clay Minerals …
Lithium is a significant energy metal. This study focuses on the extraction of lithium from lithium-bearing clay minerals utilizing calcination combined with oxalic acid leaching. The relevant ...
Structural transformation and dehydroxylation of clay minerals …
Lithium (Li)-bearing clays have become new types of Li resources, and it is found that the evolution of the mineral structure in Li-bearing clay greatly restricts the extraction of Li. Herein, a Li-bearing clay from Guizhou Province, China, was studied using in situ thermogravimetry–differential scanning calorimetry–mass spectrometry–Fourier …
Lithium Extraction from Lithium-Bearing Clay Minerals …
Minerals. 2024, clay minerals owing to its simplicity and high extraction rate. For example, by using 50 g of calcium sulfate as an assisting agent, a high lithium extraction rate of 72% could be yield under the conditions of 100 g of lithium-bearing clay minerals, 1000 C of temperature, and 4 h of time [5]. However, the addition of assisting ...
Recent advances in lithium extraction from lithium-bearing clay minerals
Lithium-bearing clay minerals are important alternative mineral sources, which can enrich the Li market and ensure the supply of Li products. Lithium-bearing clay minerals, in general consist of a 2:1 layer structure, has a good ion exchange performance. Therefore, the extraction of Li from Li-bearing clay minerals through acidification, salt ...
Thermal analysis of clay minerals and acid extraction of …
Thermal analysis of clay minerals and acid extraction of alumina from clays. by Joseph A. Pask and Ben Davies. Washington, D.C. : U.S. Dept. of the Interior, Bureau of Mines, 1943. Report of investigations (United States.
What is Mineral Extraction: Definition, Importance, Methods …
The type of mineral, the extraction method chosen, the quality of the mineral deposit, and the location all play a role in determining the time frame. For instance, underground mining processes for minerals like gold or silver might take longer than surface mining methods used for minerals like coal or clay.
Recent advances in lithium extraction from lithium-bearing clay minerals
This review highlights the structures and properties of Li-bearing clay minerals and summarizes the advantages and deficiencies of five extraction methods. It was concluded that the main Li-bearing clay minerals have a 2:1 layered structure. The Li+ can enter the interlayer space in clay minerals and be fixed in the mineral crystals ...
Recovery of rare earth elements adsorbed on clay …
The present study investigates the use of clay minerals as a source for extracting rare earth metals by leaching with sulfate and chloride salts. It was found that …
Lithium extraction from clay-type lithium resource using ferric sulfate
Montmorillonite, a layered clay mineral belonging to the smectite group, is able to exchange cations between the layers and on the external surface (González-Rodríguez et al., ... The process of lithium extraction from clay resources has been successively studied after the discovery of hectorite and Li-montmorillonite (Lalasari et …
Effect of Swelling Clay Minerals (Montmorillonite and
While clay minerals have been characterized in water-based bitumen extraction from the oil sands to some extent, the gap of knowledge in the characterization of clay minerals in a nonaqueous ...
SELECTIVE EXTRACTION OF LITHIUM FROM CLAY MINERALS
Processes for extracting lithium from a clay mineral and compositions thereof are described. The extraction process includes providing a clay mineral comprising lithium, mixing a cation source with the clay mineral, performing a high-energy mill of the clay mineral, and performing a liquid leach to obtain a lithium rich leach …
Separation of Lithium from Aluminum-Containing Clay Mineral …
This study investigated a novel membrane solvent extraction (MSX) process for the recovery and separation of lithium (Li) from clay minerals using a cation exchange organic extractant [di-(2-ethylhexyl)phosphoric acid] (DEHPA). The Li is selectively extracted from clay mineral leachate solution using highly efficient aluminum …
