Results 151 to 160 of about 1,638,413 (203)

Blasted copper slag as fine aggregate in Portland cement concrete

Journal of Environmental Management, 2017
The present work focuses on assessing the viability of applying blasted copper slag, produced during abrasive blasting, as fine aggregate for Portland cement concrete manufacturing, resulting in an alternative and safe disposal method. Leaching assays showed no toxicity for this material. Concrete mixtures were produced, with high aggregate replacement
M.A.G. dos Anjos, A.T.C. Sales, N. Andrade   +2 more
openaire   +2 more sources

Composition and structural properties of coal gasification fine slag and its classified products – a case study

International Journal of Coal Preparation and Utilization
Coal gasification fine slag (CGFS) is a large solid waste in the field of coal chemical industry, and its land occupation and environmental pollution caused by stockpiling and landfill make its comprehensive utilization imminent.
Ningning Zhang, Shizhi Ruan, Na Fu, Rui Han, An-ning Zhou, Zhen Li, Yuexian Yu, Hong Wang   +7 more
semanticscholar   +1 more source

Distribution modes of residual carbon and ash in coal gasification fine slag and its feasibility analysis as particle electrodes.

Chemosphere, 2022
From the perspective of environmental protection and resource utilization, the feasibility of treating m-cresol wastewater with coal gasification fine slag (GFS) as particle electrodes in an electrocatalytic system was evaluated to achieve the purpose of
Yanjie Niu, J. Xu, Zekai Miao, Fanhui Guo, Yixin Zhang, Jianjun Wu   +5 more
semanticscholar   +1 more source

Performance of alkali activated slag concrete mixes incorporating copper slag as fine aggregate

Journal of Cleaner Production, 2016
In this present study, copper slag (CS) is proposed as an alternative to river sand as fine aggregate in alkali-activated slag concrete (AASC) mixes. The relative performance of alkali activated slag concrete mixes with CS as fine aggregate is compared to conventional Ordinary Portland Cement concrete (OPCC) mix in terms of their workability, strength ...
B.M. Mithun, M.C. Narasimhan
openaire   +1 more source

Nitriding of ilmenite and high-grade slag fines

2011
Titanium bearing resources can selectively be chlorinated at temperatures below 200ºC if the TiO2in the feed is nitrided before chlorination. However, the nitriding reaction is highly endothermic, requires highly reducing conditions, is only thermodynamically favourable at elevated temperatures, and is affected by mass and heat transfer restrictions ...
van Vuuren, D.S., Tshilombo, G.T.
openaire   +2 more sources

A pilot scale test on the fluidized melting combustion of coal gasification fine slag.

Waste Management
To address the issue of coal gasification fine slag (CGFS) disposal, a novel fluidized melting combustion (FMC) process has been proposed. In this study, the operating feasibility, combustion performance and gas pollutant emission were assessed through 0.
Shuai Guo, Chen Liang, Zhiyong Chen, Wei Li, Qiangqiang Ren   +4 more
semanticscholar   +1 more source

Effect of the fineness of copper slag on the early hydration properties of cement–copper slag binder

Journal of Thermal Analysis and Calorimetry, 2019
The early hydration heat and hydration process, hydration products and strength of binders containing 20% copper slag with different fineness has been studied. The ordinary Portland cement is taken as the comparison sample. Results show that the replacement of cement in the same proportion copper slag can prolong its induction period, reduce its early ...
Junwei Song, Lu Wang, Jielu Zhu, Shenglei Feng, Yong Ouyang, Faguang Leng, Jinbo Song, Lei Zhang   +7 more
openaire   +1 more source

The impact of metal ions on flotation of coal gasification fine slag: an experimental study

International Journal of Coal Preparation and Utilization
This study investigates the flotation performance of coal gasification fine slag in the presence of metal ions with different valences. The impact of metal ions on the surface topography, wettability, zeta potential, functional group, and particle size ...
Xiangyun Sun, Qifa Lu, Jiakun Tan, Long Liang, Haiyang Gao, Guang-yuan Xie, Yao-li Peng   +6 more
semanticscholar   +1 more source

Synthesis of activated carbon from high-ash coal gasification fine slag and their application to CO2 capture

, 2021
Coal gasification fine slag (FS) is an inevitable by-product in the gasification process. The preparation of activated carbons (ACs) can realize the value-added utilization of FS. In this work, FS with about 70 % ash yield was prepared to ACs through KOH
Zekai Miao, Zhenkun Guo, Guofeng Qiu, Yixin Zhang, Jianjun Wu   +4 more
semanticscholar   +1 more source

Thermal and mechanical performance of geopolymer concrete with recycled aggregate and copper slag as fine aggregate

Scientific Reports
This study investigates the thermal and mechanical performance of geopolymer concrete incorporating recycled coarse aggregate (RCA) and copper slag (CS) as sustainable alternatives to natural aggregates.
Anasuya Sahu, Pramod Kumar, Bheem Pratap, Abhilash Gogineni, Regasa Yadeta Sembeta   +4 more
semanticscholar   +1 more source