Theoretical foundations of fuel combustion processes and gas dynamics of blast-furnace smelting

2019 ◽  
Author(s):  
Vitalii Lyalyuk
Keyword(s):  
Blast Furnace ◽  
Gas Dynamics ◽  
Fuel Combustion ◽  
Blast Furnace Smelting ◽  
Combustion Processes ◽  
Theoretical Foundations ◽  
Furnace Smelting

DEVELOPMENT OF MATHEMATICAL MODEL OF BLAST FURNACE SMELTING

2007 ◽  
Vol 03 (03) ◽  
pp. 399-407 ◽  
Author(s):  
ANDREY N. DMITRIEV
Keyword(s):  
Mathematical Model ◽  
Blast Furnace ◽  
Heat Exchange ◽  
Mathematical Description ◽  
Gas Dynamics ◽  
Iron Ores ◽  
Blast Furnace Smelting ◽  
Furnace Smelting

The solution of a problem of mathematical description of heat exchange, gas dynamics and the physicochemical phenomena taking place in blast furnace, and some of its application for the study of processes, and defining reduction of metals from multicomponent iron ores are considered.

Blast Furnace Smelting by Water Gas

1900 ◽  
Vol 50 (1296supp) ◽  
pp. 20771-20772
Author(s):  
C. C. Longridge
Keyword(s):  
Blast Furnace ◽  
Blast Furnace Smelting ◽  
Water Gas ◽  
Furnace Smelting

Recycling metallurgical waste in blast-furnace smelting

2007 ◽  
Vol 37 (10) ◽  
pp. 898-899 ◽  
Author(s):  
L. D. Nikitin ◽  
V. A. Dolinskii ◽  
S. A. Kudashkina ◽  
L. V. Portnov ◽  
S. F. Bugaev
Keyword(s):  
Blast Furnace ◽  
Metallurgical Waste ◽  
Blast Furnace Smelting ◽  
Furnace Smelting

Influence of the consumption of pellets with different basicity on indicators of blast-furnace smelting

2021 ◽  
pp. 4-10
Author(s):  
R. R. Dema ◽  
◽  
A. N. Shapovalov ◽  
S. N. Baskov ◽  
◽  
...  
Keyword(s):  
Blast Furnace ◽  
High Temperature ◽  
Pressure Drop ◽  
Optimal Level ◽  
Coke Rate ◽  
Specific Pressure ◽  
Blast Furnace Smelting ◽  
Gas Dynamic ◽  
Fluxed Pellets ◽  
Furnace Smelting

The results of the analysis of production data on the operation of blast furnace No. 1 (useful volume 1007 m3) of Ural Steel JSC for the period from 2013 to 2018 are presented. During this period, pellets from the Mikhailovsky GOK were used with varying degrees of fluxing: pellets of natural basicity in the ratio of CaO/SiO2 equal to 0.08 ± 0.02 units. (2013-2015) and partially fluxed pellets with a basicity of 0.52 ± 0.05 units. (from 2016 to the present). It has been established that the effectiveness of the use of pellets of various basicities is determined by their behavior in the blast furnace and depends on the proportion of pellets in the iron ore part of the charge. The gas-dynamic conditions of the smelting worsen with an increase in the proportion of pellets in the charge, which is accompanied by an increase in the specific pressure drop and forces the flow rate to be adjusted. There is an optimal level of specific pressure drop (53–55 Pa per 1 m3 of blast per minute) for the operating conditions of blast furnace No. 1 of Ural Steel, which ensures the optimum combination of the melting characteristics. Deviation from the optimal level of pressure drop leads to an increase in coke rate and a decrease in the degree of CO use, which is associated with gas distribution disturbance. Due to the increase in high-temperature properties, the replacement of non-fluxed pellets with off-fluxed pellets improves the gas-dynamic conditions in the lower part of the mine (in the cohesive zone). This leads to a decrease in the total pressure drop and specific pressure drop at a constant flow rate of the blast, and is a reserve for melting intensification. To minimize coke rate and maintain the high-performance operation of blast furnaces of Ural Steel JSC, it is necessary to work on 40–45 % of fluxed or 20–25 % acid pellets in a charge. An increase in pellet consumption while maintaining the efficiency of blast-furnace smelting is possible only if their high-temperature properties are improved. The improvement of these properties is possible as a result of optimizing the basicity and increasing the MgO content, which affects the structure and properties of the silicate bond. This work is carried out within a framework of the government order (No. FZRU-2020-0011) of the Ministry of Science and Higher Education of the Russian Federation.

Influence of Partially Reduced Pellets on Technical and Economic Features of Blast-Furnace Smelting

2021 ◽  
Vol 51 (7) ◽  
pp. 461-467
Author(s):  
I. S. Bersenev ◽  
I. S. Vokhmyakova ◽  
A. V. Borodin ◽  
Yu. A. Chesnokov ◽  
S. P. Pigarev ◽  
...  
Keyword(s):  
Blast Furnace ◽  
Blast Furnace Smelting ◽  
Reduced Pellets ◽  
Furnace Smelting

Experience in Coke Preparation for Blast-Furnace Smelting. Part 1

Metallurgist ◽  
2019 ◽  
Vol 63 (1-2) ◽  
pp. 3-10
Author(s):  
A. V. Kuzin ◽  
N. S. Khlaponin
Keyword(s):  
Blast Furnace ◽  
Blast Furnace Smelting ◽  
Furnace Smelting

Technology of Blast-Furnace Smelting of Iron using Pulverized Coal at the NLMK

Metallurgist ◽  
2020 ◽  
Vol 64 (5-6) ◽  
pp. 381-387
Author(s):  
S. V. Filatov ◽  
V. S. Listopadov ◽  
A. Yu. Sorokin ◽  
S. V. Myasoedov ◽  
V. N. Titov ◽  
...  
Keyword(s):  
Blast Furnace ◽  
Pulverized Coal ◽  
Blast Furnace Smelting ◽  
Furnace Smelting
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