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Smelting reduction of iron ore
Steel Research, 1989On the basis of MIP development several process concepts for primary ironmaking technology were investigated. In the smelting reduction process described the reduction of iron ore occurs in three stages: in the first step the ore is preheated and prereduced in a cyclon‐heat exchanger system. In the second step it is melted.
Ihsan Barin +2 more
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DIRECT IRON SMELTING REDUCTION PROCESSES
Mineral Processing and Extractive Metallurgy Review, 2008Direct iron smelting-reduction processes have been developed as an alternative to the blast furnace process for making molten, slag-free iron.
B. Anameric, S. Komar Kawatra
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Indirect reduction in blast-furnace smelting
Steel in Translation, 2016The influence of the intensity of blast-furnace smelting on the effectiveness of the indirect reduction of iron from wustite is considered on the basis of the Rist model, for specially prepared batch and coke of satisfactory quality. In the case of practically stable and effective reduction, broad variation in the smelting intensity in terms of oxygen ...
I. F. Kurunov +3 more
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Direct reduction and smelting reduction – an overview
Steel Research, 1989A survey is given on the current state of direct reduction and smelting reduction processes. Several developments, such as coal injection, top‐gas recycling etc., contribute to decrease the coke consumption in the blast furnace. Coal‐based as well as gas‐based direct reduction processes have not succeeded in Western Europe.
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Smelting Reduction Technologies for Direct Ironmaking
Mineral Processing and Extractive Metallurgy Review, 1993Smelting reduction is a term assigned to a group of upcoming ironmaking processes which aim at overcoming certain fundamental problems of the existing blast furnace route. These problems include dependence on large scale operation, reliance on coking coal and prepared raw materials as well as environmental pollution. A number of groups around the world,
P. BASU +3 more
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Slag foaming in smelting reduction processes
Steel Research, 1989In order to understand the effect of slag composition on foaming in the smelting reduction process, slag foaming was quantitatively studied for CaO–SiO2–FeO slags in the temperature ranging 1250–1400 °C. It was found that slag foaming could be characterized by a foaming index Σ which is equal to the retention or travelling time of the gas in the slag ...
K. Ito, Richard J. Fruehan
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Hydrogen Plasma Smelting Reduction of Fe2O3
Metallurgical and Materials Transactions B, 2018The paper reports successful smelting reduction of iron ore (hematite) in thermal hydrogen plasma. A specially designed reactor with water cooled copper crucible and a plasma torch was used to demonstrate the process in 1-kg scale. The number of stoichiometric requirement of hydrogen is a better parameter, instead of time, for determining the rate of ...
P. R. Behera +4 more
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Fluidized bed reduction as the prestep of smelting reduction
Steel Research, 1989Comparing the four fundamental ironmaking processes the reasons for the development of smelting reduction were derived. Based on bibliographical references a fundamental classification of the main important smelting reduction processes is presented regarding the process engineering principle of both steps, prereduction and final reduction. According to
Heinrich Wilhelm Gudenau +3 more
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Smelting High Phosphorus Iron Ore by Oxygen Enriched Top-Blown Smelting Reduction
2011 International Conference on Computer Distributed Control and Intelligent Environmental Monitoring, 2011Smelting reduction iron making technology will solve the coke shortage and environmental pollution, which has become a major research of. Iron development. By oxygen top-blown high-phosphorus iron ore smelting reduction test, that the use of oxygen top-blown molten high phosphate smelting reduction technology is feasible, and inappropriate smelting ...
Qing Shan +6 more
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Development in smelting reduction processes
Steel Research, 1989Corex process is a smelting reduction process to produce hot metal of blast‐furnace quality. Coal is used instead of coke, and this replacement makes production costs of hot metal decrease. Iron ore reduction and melting is separated into two steps: in a melter gasifier reducing gas is generated and melting energy is produced by coal gasification; iron
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