Mineral matter transition in lignite during ashing process: A case study of Early Cretaceous lignite from the Hailar Basin, Inner Mongolia, China

Jia, Rongkun; Liu, Jingjing; Han, Qiuchan; Zhao, Shumao; Shang, Niande; Tang, Peiqing; Zhang, Yanqiu

doi:10.1016/j.fuel.2022.125252

Cited by 9 publications

(4 citation statements)

References 52 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The basin has experienced four distinct development stages since its initial formation, which can be attributed to the influence of the north-east-trending Delbugan and Erguna fault zones. These stages included Late Jurassic rifting, Early Cretaceous depression, late Early Cretaceous shrinkage, and Late Cretaceous-Neogene differential uplift and leveling [19,20]. Finally, the basin has acquired a tectonic framework characterized by a "two uplifts and three depressions" configuration [1].…”

Section: Geological Backgroundmentioning

confidence: 99%

Sedimentary Environment, Tectonic Setting, and Uranium Mineralization Implications of the Yimin Formation, Kelulun Depression, Hailar Basin, China

Meng,

Nie,

Xia

et al. 2024

JMSE

View full text Add to dashboard Cite

The sandstone-type uranium deposit of the Kelulun Depression is the first industrially valuable uranium deposit discovered in the Hailar Basin. This study performed a systematic examination of 17 sandstone samples from the Yimin Formation in the Kelulun Depression based on various analytical techniques. The findings of the current study were synthesized with previous research to investigate the impact of the redox conditions and the tectonic background of the source area, as well as the paleoclimatic evolution of the Yimin Formation on uranium mineralization. The elemental Mo, U/Th, V/Cr, Ni/Co, and V/(V+Ni) ratios indicate that the paleowater was in an oxygen-rich environment during the deposition of the Yimin Formation. Additionally, the C-value, Sr/Cu, Al2O3/MgO, and Rb/Sr ratios indicate that the Yimin Formation was formed in a paleoclimate characterized by arid-to-semi-arid conditions. The geochemical characteristics of the observed elements indicated that the sediment source of the Yimin Formation was mainly felsic rocks from the upper continental crust, the weathering of the rock was weak, and the tectonic background was a passive continental margin. Coffinite is distributed in the form of cementation and stellates within or around pyrite crystals, and uranium-titanium oxide is mostly distributed in an irregular granular distribution in the biotite cleavage fractures of the study area. In summary, the findings of this study reveal that the tectonic settings, provenance, uranium source, paleoclimate, and oxygen-rich paleowater of the Yimin Formation have important geological significance for the large-scale uranium mineralization of the Kelulun Depression.

show abstract

Section: Geological Backgroundmentioning

confidence: 99%

Sedimentary Environment, Tectonic Setting, and Uranium Mineralization Implications of the Yimin Formation, Kelulun Depression, Hailar Basin, China

Meng,

Nie,

Xia

et al. 2024

JMSE

View full text Add to dashboard Cite

show abstract

“…3 are: clays: K (kaolinite); silicates: M (muscovite), A (snorthite), Q (quartz), MO (moganite), and O (orthoclase); carbonates: S (siderite), and C (calcite); oxide: H (haematite); sulphurs: P (pyrite); and chlorite: CL (clinochlore). The mineral phase identification showed that silicate ([SiO (4−x) ]n) showing the trigonal, hexagonal, triclinic and monoclinic crystal systems of the three materials, respectively [26].…”

Section: Characterization Of the Produced Hcsmentioning

confidence: 99%

Systematic physicochemical characterization, carbon balance and cost of production analyses of activated carbons derived from (Co)-HTC of coal discards and sewage sludge for hydrogen storage applications

Kahilu

Bada

Mulopo

2023

Waste Dispos. Sustain. Energy

View full text Add to dashboard Cite

Hydrothermal carbonization (HTC) technologies for producing value-added carbonaceous material (hydrochar) from coal waste and sewage sludge (SS) waste might be a long-term recycling strategy for hydrogen storage applications, cutting disposal costs and solving waste disposal difficulties. In this study, hydrochars (HC) with high carbon content were produced using a combination of optimal HTC (HTC and Co-HTC) and chemical activation of coal tailings (CT), coal slurry (CS), and a mixture of coal discard and sewage sludge (CB). At 850 °C and 800 °C, respectively, with a KOH/HC ratio of 4:1 and a residence time of 135 min, activated carbons (ACs) with the highest Brunauer–Emmett–Teller specific surface (SBET) of 2299.25 m2g− 1 and 2243.57 m2g− 1 were obtained. The hydrogen adsorption capability of the produced ACs was further studied using gas adsorption isotherms at 77 K. At 35 bars, the values of hydrogen adsorbed onto AC-HCT (AC obtained from HTC of CT), AC-HCS (AC obtained from HTC of CS), and AC-HCB (AC obtained from HTC of the blending of coal discard (CD) and SS) were approximately 6.12%, 6.8%, and 6.57% in weight, respectively. Furthermore, the cost of producing synthetic ACs for hydrogen storage is equivalent to the cost of commercial carbons. Furthermore, the high proportion of carbon retained (>70%) in ACs synthesized by HTC from CD and SS precursors should restrict their potential carbon emissions.

show abstract

“…Coal has properties of adsorption and reduction barriers [2], and it is composed of inorganic components (mineral matter) and organic matter or macerals [3]. The mineral matter primarily consists of non-mineral elements, crystalline minerals, and non-crystalline mineraloids [4]. As the essential components of coal, mineral matter is of great significance in coal geology, washing, combustion, gasification, liquefaction, and extraction [5][6][7].…”

Section: Introductionmentioning

confidence: 99%

Mineralogy and Geochemistry of High-Sulfur Coals from the M8 Coal Seam, Shihao Mine, Songzao Coalfield, Chongqing, Southwestern China

Lu,

Qin,

Wang

et al. 2024

Minerals

View full text Add to dashboard Cite

Mineral matter, including minerals and non-mineral elements, in coal is of great significance for geological evolution, high-value coal utilization, and environment protection. The minerals and elemental geochemistry of Late Permian coals from the M8 coal seam, Shihao mine, Songzao coalfield in Chongqing, were analyzed to evaluate the sediment source, sedimentary environment, hydrothermal fluids, and utilization prospects of critical metals. The average total sulfur (4.21%) was high in coals, which mainly exists in the forms of pyritic sulfur. Kaolinite, pyrite, calcite, quartz, illite and illite/smectite (I/S) mixed layers, and anatase predominated in coals, with trace amounts of chlorite, ankerite, and siderite. Epigenetic cell- and fracture-filling pyrite, veined calcite, and ankerite were related to hydrothermal fluids and/or pore water after the diagenesis stage. Compared to the world’s hard coals, As and Cd are enriched in the Shihao M8 coals, and Li, Cr, Co, Zr, Mo, Pb, and Tb are slightly enriched. These high contents of sulfophile elements may be related to seawater intrusion. The terrigenous clastics of the Shihao M8 coals originated from the felsic–intermediate rocks atop the Emeishan Large Igneous Provinces (ELIP) (Kangdian Upland), while the roof and floor samples were derived from Emeishan high-Ti basalt. Through the combination of sulfur contents and indicator parameters of Fe2O3 + CaO + MgO/SiO2 + Al2O3, Sr/Ba and Y/Ho, the depositional environment of peat swamp was found to be influenced by seawater. Although the critical elements in coal or coal ash did not reach the cut-off grade for beneficial recovery, the concentration of Li and Zr were high enough in coal ash.

show abstract

Mineral matter transition in lignite during ashing process: A case study of Early Cretaceous lignite from the Hailar Basin, Inner Mongolia, China

Cited by 9 publications

References 52 publications

Sedimentary Environment, Tectonic Setting, and Uranium Mineralization Implications of the Yimin Formation, Kelulun Depression, Hailar Basin, China

Sedimentary Environment, Tectonic Setting, and Uranium Mineralization Implications of the Yimin Formation, Kelulun Depression, Hailar Basin, China

Systematic physicochemical characterization, carbon balance and cost of production analyses of activated carbons derived from (Co)-HTC of coal discards and sewage sludge for hydrogen storage applications

Mineralogy and Geochemistry of High-Sulfur Coals from the M8 Coal Seam, Shihao Mine, Songzao Coalfield, Chongqing, Southwestern China

Contact Info

Product

Resources

About