Results 111 to 120 of about 6,108 (160)

Energy Consumption in Smelting Reduction

Steel Research International, 2005
The concepts of theoretical gas utilization ratio, smelting heat of iron ore and effective calorific value of coal were introduced in this work. The practical gas utilization ratio and the gas consumption in the shaft of a reduction unit for smelting reduction were discussed.
Jue Fang, Xingjuan Wang, Li Guo, Peixiao Liu   +3 more
exaly   +2 more sources

Smelting Reduction Technologies for Direct Ironmaking

Mineral Processing and Extractive Metallurgy Review, 1993
Smelting 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,
H S Ray
exaly   +2 more sources

DIRECT IRON SMELTING REDUCTION PROCESSES

Mineral Processing and Extractive Metallurgy Review, 2008
Direct iron smelting-reduction processes have been developed as an alternative to the blast furnace process for making molten, slag-free iron.
S Komar Kawatra
exaly   +2 more sources

Smelting Reduction of a Monocharge

Metallurgist, 2016
The existing two-stage technology used to make iron and steel is based on the use of hot reducing gases, which results in the formation of waste gases and dust and creates an environmental problem. The results obtained from an analysis of metallurgical processes that involve smelting reduction are used to propose a new technology based on the smelting ...
S. M. Tleugabulov, B. S. Tleugabulov, G. M. Koishina, D. Kh. Altybaeva, E. B. Tazhiev   +4 more
openaire   +1 more source

Smelting Reduction Processes

2020
Blast furnace is still very popular in producing hot metal because of their (i) high energy efficiency, (ii) high productivity, (iii) high degree of gas utilization and (iv) long service life.
Sujay Kumar Dutta, Yakshil B. Chokshi
openaire   +1 more source

Reduction of Oxides and Reduction Smelting

2021
A number of metals are produced from oxide minerals. Iron, manganese, chromium, and tin are exclusively obtained from oxide ores. Rich ores, for example, hematite, pyrolusite, chromite, and so on can be directly reduced whereas lean ores are first concentrated by communication, classification, jigging, and tabling.
openaire   +1 more source

Conclusions on the development of smelting reduction

Steel Research, 1989
The present paper summarizes the results of the US‐German Symposium on “Innovative Iron and Steel Making Processes”. A survey is given on the state‐of‐the‐art technology as well as the state and further needs of research.
H. Alan Fine, Richard J. Fruehan, Dieter Janke, Rolf Steffen   +3 more
openaire   +1 more source

Fluidized bed reduction as the prestep of smelting reduction

Steel Research, 1989
Comparing 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, Jue Fang, Takejuki Hirata, Ulf Gebel   +3 more
openaire   +1 more source

Continuous reductive smelting of steel

Steel in Translation, 2016
Traditionally, iron and steel production is based on a two-stage system consisting of a blast furnace and a converter, which is characterized not only by high productivity but also by copious generation of gaseous emissions and solid wastes. Reductive smelting in a blast furnace with unavoidable carburization of the metal—the formation of molten iron ...
S. M. Tleugabulov, S. B. Abikov, B. S. Tleugabulov   +2 more
openaire   +1 more source

Reductive smelting of iron ore

Steel in Translation, 2015
The carburization of iron is described. Means of preventing carburization by direct reduction of the metal with solid carbon are considered. The interaction between iron, manganese, and chromium oxides and solid carbon is studied in terms of the associated change in dissociation pressure. On that basis, the carburization of iron may be prevented.
S. M. Tleugabulov, S. B. Abikov, D. Kh. Altybaeva, Yu. D. Isupov, B. S. Tleugabulov   +4 more
openaire   +1 more source