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Nature, 1871 WILL you kindly allow me to inquire whether any of your readers can inform me if there exists any connection between lignite and selenite when found together, and, if so, in what way the lignite assists in the formation of the crystals of calcium sulphate.
An Amateur
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On the Carbonisation of Lignite
Journal of the Fuel Society of Japan, 1950 乾溜爐の設計に先立ち平井炭礦の亜炭について二三の實驗室實驗を行い, 次いで内熱式の、新乾溜爐を設計建設した。此の爐は周に設けられた爐で作られた燃燒ガスを壓入して加熱用に用いる方式をとり, 此のガスの顯熱とガス中に7～8%含まれる酸素によるチヤプの一部の燃燒熱が加熱用の熱源として用いられる。操業の結果によると此の方式で膝乾溜が均一匠行えない憾があり, 運韓初期を除く六部分の間ガスの壓入を停止して自燃により乾溜する方法をも試みた。此の方式では前者に比べて製品の品質がよくなるという利點があるが, 爐の處理能力が低下するという缺點をも有する。
Riichi Shioda
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Monitoring slope stability in surface mines: are low-cost UAVs used for excavated rock volume calculations capable of early detection of displacements? [PDF]
MATEC Web of Conferences, 2022 This paper tries to assess the ability of UAVs equipped with RGB cameras to monitor the stability of the specific slopes in the surface lignite mines of Ptolemaida basin.
Tsachouridis Stefanos +4 more
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Crystals, 2022 Abundant and cheap lignite is regarded as inferior fuel due to its disadvantages such as low heat and high moisture. In order to realize the high value and clean, non-fuel utilization of lignite, we used lignite as precursor to prepare high-quality ...
Yi-Ming Wang, Chun-Hua Zhang
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Meitan xuebao, 2023 Suppressing the spontaneous combustion of lignite is of great significance for safe transportation and efficient utilization of lignite. Taking the Shengli lignite as the research object, two different macerals, inertinite and huminite, were selected by ...
Yanjun WANG +7 more
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Geologos, 2023 The studied crevasse-splay complex, situated within the 1st Mid-Polish lignite seam (MPLS-1), ranks amongst the best-developed and most readily accessible for direct research of all hard coal and lignite occurrences worldwide.
Dziamara Mariusz +4 more
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Lignite, thermally-modified and Ca/Mg-modified lignite for phosphate remediation [PDF]
Science of The Total Environment, 2021 Aqueous phosphate uptake is needed to reduce global eutrophication. Negatively charged adsorbent surfaces usually give poor phosphate sorption. Chemically- and thermally-modified lignite (CTL) was prepared by impregnating low-cost lignite (RL) with Ca2+ and Mg2+ cations, basified with KOH (pH ̴ 13.9), followed by a 1 h 600 °C pyrolysis under nitrogen ...
Xuefeng Zhang +9 more
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Effect of -O- on Water Molecule Adsorption and Adsorption Mechanism of Lignite and Coke
Journal of Chemistry, 2021 The high moisture content of lignite restricts its extensive and efficient use. Furthermore, the reabsorption of lignite is also a factor that affects lignite spontaneous combustion. Therefore, it is of great importance to study the process and mechanism
Xue Bai +5 more
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Journal of MMIJ, 2021 We proposed a new gasification method that converts unused organic matter in sedimentary rocks to bio methane gas through the use of microorganisms, known as Subsurface Cultivation and Gasification (SCG).
Noritaka ARAMAKI, Takuma MURAKAMI
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Energies, 2021 Two experimental simulations of underground coal gasification (UCG) processes, using large bulk samples of lignites, were conducted in a surface laboratory setup.
Krzysztof Kapusta
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