Results 41 to 50 of about 36,593 (233)
Construction of Lean Coal Molecular Structure Model Based on Spectroscopic Characterization
Asia-Pacific Journal of Chemical Engineering, EarlyView.ABSTRACT The chemical structure of coal exerts a profound influence on its properties and utilization pathways. A comprehensive analysis of coal's molecular structure is crucial for mitigating environmental pollution arising from coal combustion and improving the efficiency of coal utilization.
Song Liu +5 more
wiley +1 more source
Geofluids, 2022 The fractured limestone aquifers under coal seams bring great threat to coal production, and grouting engineering before mining is usually used to seal the fractures and prevent water inrushes.
Jianbo Li, Yanchun Xu
doaj +1 more source
Conditioning Circuit Analysis for Slimes Management in Quarries [PDF]
, 2003 Driven by increasingly stringent environmental regulations on water usage, many European quarries are in the process of adding thickening circuits to their wash plants for managing clayey tailings. One of the critical components of this circuit is slurry
Akers +19 more
core +1 more source
Potassium hydroxide activation of microalgal biochar for improved adsorption efficiency
Biofuels, Bioproducts and Biorefining, EarlyView.Abstract Activated carbon was prepared from Chlorella by carbonization and potassium hydroxide activation, and its structural properties and methylene blue (MB) adsorption performance were evaluated. Raw Chlorella exhibited an adsorption capacity of 287.2 mg g−1, which decreased to 214.8 mg g−1 after carbonization.
Keito Kubota +3 more
wiley +1 more source
Energy Balancing of Electrochemical Alternatives to the Solvay Process
Chemie Ingenieur Technik, EarlyView.To overcome the CaCl2 and CO2 emissions custom to the conventional Solvay process in soda ash production, electrochemically based alternatives were investigated. In particular, the mass‐ and energy balances for chlor‐alkali electrolysis and bipolar electrodialysis‐based processes are discussed comprehensively in the presented work.
Tom Wenzel +3 more
wiley +1 more source
Underground mineral extraction [PDF]
, 1980 A method was developed for extracting underground minerals such as coal, which avoids the need for sending personnel underground and which enables the mining of steeply pitched seams of the mineral.
Miller, C. G., Stephens, J. B.
core +1 more source
Ignition of the Soaring Droplet Sets of Waste-Derived Coal-Water Slurry With Petrochemicals [PDF]
, 2016 We have analyzed the ignition of droplet sets of waste-derived coal-water slurry with petrochemicals for the case of their soaring inside special combustion chamber.
Dmitrienko, Margarita Aleksandrovna +3 more
core +2 more sources
Clathrate hydrate crystallization
The Canadian Journal of Chemical Engineering, EarlyView.Abstract Clathrate hydrate crystallization has been an area of interest to chemical engineers from the point of view of crystal structure, thermophysical properties, phase equilibria, kinetics, industrial applications, and environmental (climate change) implications.
Peter Englezos
wiley +1 more source
Deep Underground Science and Engineering, EarlyView.Aiming at the scientific frontiers of in situ fluidized mining of deep resources, a deep coal fluidized pipeline lifting system based on hydraulic conveying has been proposed. To solve the issue of particle sedimentation of large particles in horizontal connection sections, a solution involving the installation of guide vane‐type swirlers in the ...
Jiusheng Bao +5 more
wiley +1 more source
Study on mechanical properties of polymer cement slurry-coal interface transition zone
Meikuang Anquan, 2021 Advanced deep hole grouting reinforcement technology is proposed. The effects of VAE emulsion on cement-based materials were studied. The effects of VAE emulsion on the bonding strength between cement based materials and coal and the compressive strength
LIANG Hualei +5 more
doaj +1 more source