Results 11 to 20 of about 961 (134)
Meikuang Anquan, 2021 In view of the difficulties in dust control and dust removal in the gas drainage borehole of soft broken coal seam in coal mine, a new technology of dust control by air pressure at orifice and dry dust removal by annular seam injection is proposed.
GONG Xiaobing
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Dust Control Technology in Dry Directional Drilling in Soft and Broken Coal Seams
Energies, 2022 High rate of dust generation and serious dust diffusion in dry directional drilling in soft and broken coal seams (SBCS) have long been critical problems in the mining process.
Dongmei Wu, Jie Gao, Ke Lu
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Chemical Engineering Transactions, 2022 The key technology for the continuous supply of electricity from solar power plants is a thermal energy storage (TES) approach. The selection of the best storage system and the correct thermal storage material remains a significant challenge in solar ...
Karem Elsayed Elfeky +2 more
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Modeling of Installations with a Rotary Kiln for Thermal Decontamination of Wastes [PDF]
Problems of the Regional Energetics, 2018 The object of the study is a plant for incineration of solid wastes in a rotary kiln with an afterburning chamber and thermal catalytic emission purification.
Krot O.P., Rovenskyi O.I.
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Water Science and Technology, 2021 Slaughterhouse wastewater (SWW) contains high concentrations of phosphorus (P) and is considered as a principal industrial contaminant that causes eutrophication.
Shengdan Sun +5 more
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Gas reverse circulation drilling technology for large-diameter DTH hammer
Meikuang Anquan, 2023 Large diameter DTH hammer is a drilling tool which has been proved by a lot of engineering practice and can improve the construction efficiency of large diameter drilling on mine surface. However, after drilling into the aquifer, the penetration rate of
ZHAO Jiangpeng
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Meikuang Anquan, 2022 Aiming at the characteristics of poor cementation and broken seam in Wangpo Coal Mine, the pneumatic directional drilling test of soft-fragmentized coal seam with high-pressure nitrogen slag discharge was carried out.
SUN Yongxin +5 more
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Research and practice of high-speed spiral composite drilling technology in complex and weak coal seams [PDF]
E3S Web of ConferencesIn response to the difficult slag discharge and low hole formation rate encountered in the Wangpo Coal Mine, a study was conducted on high-speed spiral composite drilling technology.
Song Yubo
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Meitan xuebaoAiming at the problems of gas lift reverse circulation shaft washing slag discharge and low drilling efficiency in the application of vertical shaft drilling method in the Jurassic strata coal mines in western China, taking ϕ4.2 m advanced drilling of ...
Hua CHENG +4 more
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A simulation and experimental study of bottomhole flow field in a large-diameter rescue borehole
Meitian dizhi yu kantanObjectiveIn mine rescue, reaming using a large-diameter down-the-hole (DTH) hammer faces is challenged by complex bottomhole flow fields and difficult slag discharge. This study aims to address these challenges. MethodsTo reveal the influence patterns of
Yan ZHAO +9 more
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