Reducibility mill scale industrial waste via coke breeze at 850-950ºC

Gaballah, N. M.; Zikry, A. A. F.; El-Hussiny, N.A.; Khalifa, El-D M.G.; Farag, El-F A.B.; Shalabi, El-M M.H.

doi:10.2298/sos1501103g

Cited by 7 publications

(3 citation statements)

References 7 publications

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“…Reduction of the prepared briquettes under hydrogen gas was done using TGA apparatus [13][14][15][16][17][18][19]. The sample was placed in a Ni-Cr basket, which was suspended below the electronic balance by Ni-Cr wire.…”

Section: Briquette Reduction Proceduresmentioning

confidence: 99%

The Effect of Adding El-Dekhilla Waste Pellets Upon The Quality and Reduction Kinetics of El-Baharia Iron Ore Briquettes Using Hydrogen Gas

El-Dars,

Salah,

Elsaby

et al. 2017

The Bulletin Tabbin Institute for Metallurgical Studies (TIMS)

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The effect of the addition of El-Dekhilla waste pellets fines (E) upon the quality of El-El-Baharia iron ore (O) briquettes was investigated in this study. The kinetics of the reduction of the briquettes formed having different composition using hydrogen gas was studied at different temperatures (700°C-950°C). The results indicated that best ore reduction was achieved at 950°C. The kinetic of the reduction process was studied using different models and the best-fit models determined was (Kt = 1-(1-R) 1/2 and kt = R+ (1-R) ln (1-R)). XRD analysis was used to identify the main crystalline phases present within the reduced briquettes at the optimal temperature and it was found that the metallic iron (syn. Fe) was predominantly formed.

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Section: Briquette Reduction Proceduresmentioning

confidence: 99%

The Effect of Adding El-Dekhilla Waste Pellets Upon The Quality and Reduction Kinetics of El-Baharia Iron Ore Briquettes Using Hydrogen Gas

El-Dars,

Salah,

Elsaby

et al. 2017

The Bulletin Tabbin Institute for Metallurgical Studies (TIMS)

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“…Carbon dioxide is also a warm gas, and its formation leads to the warming up of the atmosphere that leads to global warming. The effects of global warming include, thinning away of the ice in the cold regions of the earth, climate change issues like excessive rainfall and excessive heats ( Poudel et al., 2011 ; Gaballah et al., 2015 , Odusote et al., 2019 ; Adeleke et al., 2019a , b , c ; 2020a , b ). Droughts are more prolonged in the southwest region and there is a global sea level rise.…”

Section: Introductionmentioning

confidence: 99%

Sustainability of multifaceted usage of biomass: A review

Adeleke

Ikubanni

Orhadahwe

et al. 2021

Heliyon

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The paper focuses on collection of information on recent multifaceted usage of biomass materials with critical examination on its sustainability. The use of biomass is becoming popular, with wide global acceptance as it is considered as green technology. The use of biomass products across industrial parallels, the material combination and production processes were elucidated in this paper. Biomass materials are seen as affordable alternative to conventional materials for domestic and industrial applications. The multifaceted use of biomass, which includes, energy generation, metallurgical applications, construction purposes, reinforcement in metal matrix composite, microelectromechanical system, biochemical and traditional medicine were discussed. This underscores the need to develop a sustainable plan to meet with its diverse usage to be beyond laboratory efforts. This paper examined whether the availability of biomass can sustain its multifaceted usage or not. It also examined the modalities to ensure sustainable use of biomass. Different policies were highlighted and discussed in line with continuous multifaceted use of biomass.

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“…Ash is formed by combustion of coal and especially of low calorific value lignite, in the respective power stations, as a waste product, specifically: a) fly ash, about 80% of the total ash amount, entrained in the gas flow and collected by electrostatic precipitators; b) bottom ash, the remaining, a dark gray, granular, and porous material. Nowadays, special emphasis should be placed on resources optimization, to minimize uncontrolled waste disposal [3,4]. Especially, management of fly and bottom ashes is of great environmental concern, as only a limited amounts of ashes are currently used, while the rest is landfilled, a situation that will possibly cause severe long-term environmental effects [5][6][7][8].…”

Section: Introductionmentioning

confidence: 99%

Sintering lignite fly and bottom ashes via two-step versus conventional process

Karayannis¹,

Moutsatsou²,

Katsika³

2016

SCI SINTER

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Lignite combustion class-C (highly-calcareous) fly ash and bottom ash were sintered employing two-step sintering (TSS) and compared to conventionally sintered ones. TSS sintering is a new promising approach mainly used to obtain effectively densified ceramics. This alternative process is generally characterized by the absence of the final stage of grain growth occurring upon conventional sintering and by the development of nanograin microstructure. The ceramic microstructures successfully obtained in the present research were characterized by means of X-ray diffraction and scanning electron microscopy coupled with energy dispersive X-ray analysis as well as by density measurements. The effectiveness of the solidification process was thoroughly studied, and the specific microstructural features attained are compared between each other and evaluated in relation to the sintering method applied. The results show that the valorization of lignite calcareous ashes into ceramic materials is feasible through different sintering techniques.

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Reducibility mill scale industrial waste via coke breeze at 850-950ºC

Cited by 7 publications

References 7 publications

The Effect of Adding El-Dekhilla Waste Pellets Upon The Quality and Reduction Kinetics of El-Baharia Iron Ore Briquettes Using Hydrogen Gas

The Effect of Adding El-Dekhilla Waste Pellets Upon The Quality and Reduction Kinetics of El-Baharia Iron Ore Briquettes Using Hydrogen Gas

Sustainability of multifaceted usage of biomass: A review

Sintering lignite fly and bottom ashes via two-step versus conventional process

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