Exergy analysis of hydrogen-reduction based steel production with coal gasification-shaft furnace-electric furnace process

2021 ◽  
Author(s):  
Feng Li ◽  
Mansheng Chu ◽  
Jue Tang ◽  
Zhenggen Liu ◽  
Yusheng Zhou ◽  
...  
Keyword(s):  
Electric Furnace ◽  
Coal Gasification ◽  
Exergy Analysis ◽  
Hydrogen Reduction ◽  
Shaft Furnace ◽  
Steel Production ◽  
Furnace Process

Computational analysis of hydrogen reduction of iron oxide pellets in a shaft furnace process

2021 ◽  
Author(s):  
Lei Shao ◽  
Xiaonan Zhang ◽  
Chenxi Zhao ◽  
Yingxia Qu ◽  
Henrik Saxén ◽  
...  
Keyword(s):  
Iron Oxide ◽  
Computational Analysis ◽  
Hydrogen Reduction ◽  
Shaft Furnace ◽  
Furnace Process ◽  
Reduction Of Iron

scholarly journals Simulation of thermal processes of shaft plasma furnace for waste gasification

2021 ◽  
Vol 2119 (1) ◽  
pp. 012036
Author(s):  
A S Anshakov ◽  
V.A. Faleev ◽  
P V Domarov
Keyword(s):  
Mathematical Modeling ◽  
Electric Furnace ◽  
Electrical Resistance ◽  
Thermal Processes ◽  
Resistive Heating ◽  
Model Calculations ◽  
Furnace Process ◽  
Plasma Furnace ◽  
Waste Gasification

Abstract Mathematical modeling of a part of a mine plasma electric furnace for waste gasification is presented. In model calculations, the study of the effect of additional resistive heating as an in-furnace process of drying waste was carried out. In the course of modeling, the electrical resistance of the waste at natural moisture was taken into account. A study was carried out to identify the uniform release of energy inside the waste batch in the drying zone with different connections of the electrodes and the type of current.

Exergy Analysis of Steel Electric Arc Furnace

2010 ◽  
Author(s):  
Ebrahim Hajidavalloo ◽  
Hamzeh Dashti
Keyword(s):  
Energy Consumption ◽  
Flue Gas ◽  
Exergy Analysis ◽  
Steel Production ◽  
Electrical Energy ◽  
Electric Arc Furnace ◽  
Electric Arc ◽  
Arc Furnace ◽  
Electrical Energy Consumption ◽  
Energy And Exergy

In this paper, energy and exergy analysis of an existing steel electric arc furnace (EAF) was performed to estimate the furnace potential for increasing the efficiency and decreasing the electrical energy consumption. The results of analysis show that the energy and exergy efficiencies of the furnace are 56.9% and 40.5%, respectively. Field data show that mass flow rate of hot flue gas is around 10.4 kg/s in average which contains 18.3% and 12.2% of total input energy and exergy, respectively. By using energy of flue gas for preheating the sponge iron, electrical energy consumption of the furnace could be reduced up to 88 GJ which means 21.2% reduction in electrical energy consumption and 13.6% increase in steel production. Also, exergy efficiency improves about 10.8% by using preheating scheme.

scholarly journals Briquetting of EAF Dust for its Utilisation in Metallurgical Processes

2015 ◽  
Vol 36 (2) ◽  
pp. 263-271 ◽  
Author(s):  
Aneta Magdziarz ◽  
Monika Kuźnia ◽  
Michał Bembenek ◽  
Paweł Gara ◽  
Marek Hryniewicz
Keyword(s):  
Shaft Furnace ◽  
Steel Production ◽  
Hydrated Lime ◽  
Electric Arc Furnace ◽  
Electric Arc ◽  
Arc Furnace ◽  
High Iron Content ◽  
Coke Content ◽  
Eaf Dust ◽  
To Receive

Abstract Dust generated at an electric arc furnace during steel production industry is still not a solved problem. Electric arc furnace dust (EAF) is a hazardous solid waste. Sintering of well-prepared briquetted mixtures in a shaft furnace is one of possible methods of EAFD utilisation. Simultaneously some metal oxides from exhaust gases can be separated. In this way, various metals are obtained, particularly zinc is recovered. As a result, zinc-free briquettes are received with high iron content which can be used in the steelmaking process. The purpose of the research was selecting the appropriate chemical composition of briquettes of the required strength and coke content necessary for the reduction of zinc oxide in a shaft furnace. Based on the results of the research the composition of the briquettes was selected. The best binder hydrated lime and sugar molasses and the range of proper moisture of mixture to receive briquettes of high mechanical strength were also chosen and tested. Additionally, in order to determine the thermal stability for the selected mixtures for briquetting thermal analysis was performed. A technological line of briquetting was developed to apply in a steelworks.

Mechanical Performances of Concrete Made with Manganese Slag

2011 ◽  
Vol 117-119 ◽  
pp. 1185-1189
Author(s):  
Duo Qiang Liang ◽  
Feng Qin ◽  
Xu Guang Li ◽  
Ji Bo Jiang
Keyword(s):  
Portland Cement ◽  
Electric Furnace ◽  
Ordinary Portland Cement ◽  
Economic Cost ◽  
Experimental Results ◽  
Cement Concrete ◽  
Furnace Process ◽  
Mechanical Performances ◽  
Manganese Slag

It is of great importance to innocuity, minimization and reutilization of manganese slag generated in manganese product by electric furnace process. In the paper, ordinary Portland cement was replaced partly by manganese slag to then evaluate manganese slag’ effect on mechanical performances of them. The experimental results obtained show that ordinary Portland cement added less than 30% by manganese slag was improved in mechanical performances and the cement concrete added less than 30% by manganese slag was not changed significantly. To lower economic cost and achieve enhanced mechanical performances, manganese slag can be substituted partly to cement concrete.

Production of FeNi by the rotary kiln-electric furnace process at Hyuga Smelter

1987 ◽  
Vol 19 (1-4) ◽  
pp. 189-198 ◽  
Author(s):  
Tsunekazu Ogura ◽  
Ken Kuwayama ◽  
Akira Ono ◽  
Yasuo Yamada
Keyword(s):  
Electric Furnace ◽  
Rotary Kiln ◽  
Furnace Process
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