Results 241 to 250 of about 4,430,869 (300)

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

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

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
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

The Optical Spectra of Hydrogen Plasma Smelting Reduction of Iron Ore: Application and Requirements

Steel Research International
Due to the ever‐increasing demand for high‐quality steel and the need to reduce CO2 emissions, research and development of sustainable steelmaking processes have gained a lot of interest in the past decade.
H. Pauna, Daniel Ernst, M. Zarl, I. S. Souza Filho, M. Kulse, Ömer K. Büyükuslu, M. Jovičević-Klug, H. Springer, Marko Huttula, J. Schenk, T. Fabritius, D. Raabe   +11 more
semanticscholar   +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

Smelting reduction of iron ore

Steel Research, 1989
On 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, Michael Lemperle, Michael Modigell   +2 more
openaire   +1 more source

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.
B. Anameric, S. Komar Kawatra
openaire   +1 more source

Indirect reduction in blast-furnace smelting

Steel in Translation, 2016
The 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, S. V. Filatov, D. N. Tikhonov, V. I. Basov   +3 more
openaire   +1 more source

Direct reduction and smelting reduction – an overview

Steel Research, 1989
A 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.
openaire   +1 more source