Quality of the refractory compound for the iron notch of blast furnaces

Refractories ◽  
1977 ◽  
Vol 18 (7-8) ◽  
pp. 467-469
Author(s):  
V. A. Kostrov ◽  
V. I. Solodkov
Keyword(s):  
Refractory Compound ◽  
Blast Furnaces ◽  
Iron Notch

Development and production of large blast furnaces from 2015 to 2016 in China

2020 ◽  
Vol 117 (1) ◽  
pp. 108 ◽  
Author(s):  
Bing Dai ◽  
Hong-ming Long ◽  
Yong-cai Wen ◽  
Yi-long Ji ◽  
Yun-cai Liu
Keyword(s):  
Raw Materials ◽  
Blast Furnaces ◽  
Security Risk ◽  
Hot Metal ◽  
High Quality ◽  
Large Blast ◽  
Existing Problems ◽  
Cost Cutting ◽  
The Future

This article has reviewed the production status, total reductant consumption, raw materials and operation principle indexes of large blast furnaces in China from 2015 to 2016. The developing actuality of Chinese large BFs has been quantitatively analyzed and the existing problems have been proposed clearly. Based on that, maintaining production stable, enhancing the quality of raw materials and improving the operation principles are suggested. Large BFs take advantages of high-quality hot metal, energy saving, cost-cutting, high mechanization and automation levels and are sufficient to meet the challenges of economic crisis, environmental pressure and security risk form the future. Thus, the number of large BFs in China will continue to increase in the future.

Quality of pig iron and slag molten in blast furnaces with SSGOK pellets

Metallurgist ◽  
1968 ◽  
Vol 12 (9) ◽  
pp. 448-451
Author(s):  
I. A. Kopyrin ◽  
Yu. P. Volkov ◽  
N. N. Babarykin ◽  
A. L. Galatonov ◽  
L. Ya. Gavrilyuk ◽  
...  
Keyword(s):  
Pig Iron ◽  
Blast Furnaces

Effect of the quality of the iron-ore-bearing raw materials and coke on the performance indices of blast furnaces at the Novolipetsk metallurgical combine

Metallurgist ◽  
2010 ◽  
Vol 54 (1-2) ◽  
pp. 3-13 ◽  
Author(s):  
I. F. Kurunov ◽  
V. N. Titov ◽  
V. L. Emel’yanov ◽  
A. M. Loginov ◽  
V. I. Basov ◽  
...  
Keyword(s):  
Iron Ore ◽  
Raw Materials ◽  
Blast Furnaces ◽  
Performance Indices ◽  
Novolipetsk Metallurgical ◽  
Metallurgical Combine

scholarly journals MEROS Dust Quality of Different Plants and Its Potential Further Uses

Metals ◽  
2021 ◽  
Vol 11 (5) ◽  
pp. 840
Author(s):  
Claudia Hledik ◽  
Martin Goetz ◽  
Franz Ottner ◽  
Maria Fürhacker
Keyword(s):  
Heavy Metals ◽  
Suspended Solids ◽  
Fine Particles ◽  
Sinter Plant ◽  
Treatment Options ◽  
Blast Furnaces ◽  
Sintering Process ◽  
Furnace Process ◽  
Low Levels

Sintering is a process of agglomeration of fine particles into porous sinters for blast furnaces. During the sintering process, high volumes of sinter plant gas containing high loads of dust, SO2 and NOX and toxic pollutants, such as heavy metals (e.g., Hg, Pb, Cr and Cd) and PCDD/F, are emitted. The objective of this study was to characterize dusts of different plants as the basis for suggestions of reutilization and treatment options. Dusts, eluates and residues were produced and DOC, T-N, ions and heavy metals were analyzed. The results show that dusts from different plants are very similar in terms of DOC, T-N, Mg, Ca and many heavy metals and only differ in criteria such as suspended solids and ions such as K, Na, Cl and SO4. Based on the high levels of alkalis and low levels of iron, direct recycling into the sinter or furnace process is not recommended. The dissolution of the soluble substances in water reduces the MEROS dust by 90% of the weight and extracts the alkalis. The remaining wastewater needs to be treated to reduce DOC, T-N and some heavy metals. The solid residues can be recycled into the sinter to reduce potential PCDD/F, which are attached to the activated carbon.

scholarly journals Влияние качества агломерата и кокса на технико-экономические показатели доменной плавки

2018 ◽  
pp. 17-24
Author(s):  
D.A. Kassim ◽  
A.K. Tarakanov ◽  
V.P. Lyalyuk ◽  
P.I. Otorvin ◽  
A.A. Gusev
Keyword(s):  
Blast Furnace ◽  
Gas Flow ◽  
Gas Permeability ◽  
Raw Materials ◽  
Mechanical Energy ◽  
Blast Furnaces ◽  
Depth Of Penetration ◽  
Total Mechanical Energy ◽  
Blowing Regime

Purpose: Compare the results of blast furnace smelting efficiency, when chang-ing the qualitative characteristics of the sinter and coke, and the calculated param-eters of the blowing regime of melting. Methodology: Analysis of technical and economic performance of blast furnaces during periods of work on the agglomerate with different metallurgical characteris-tics and different diameter of the tuyeres. Findings: The experience of blast furnaces with a volume of 2,700 and 2,000 m3 confirmed a known fact of the dependence of furnace efficiency and coke consump-tion not only through the quality of charge materials, but also through the distribu-tion of the gas flow along the furnace section. Originality: The technological analysis of the results of the operation of blast furnaces with the volume of 2700 and 2000 m3 with a change of the quality of the sinter and pellets in combination with the change of the blowing regime parame-ters was performed. On the basis of the performed analysis, it was confirmed the expediency of increasing the gas permeability of the charge by improving the quali-ty of the raw materials while increasing the total mechanical energy of the com-bined gas-blast and hearth-gas, which are responsible for the length of the com-bustion zone and the depth of penetration of the gas flow to the center of the blast furnace. Practical value: Alternation of tuyeres of different diameters along with the im-provement of the quality characteristics of charge materials, additionally contrib-utes to the enhancement of the positive effect due to the expansion of the combus-tion zones in the furnace hearth. And if in this case the total mechanical energy of the mountain gas rises and the depth of penetration of the furnace gas to the fur-nace axis increases, the effect of using high-quality raw materials can be maxim-ized. Keywords: agglomerate, coke, blowing, tuyeres, gas permeability, quality, total energy.

Nondestructive testing of the quality of high-alumina blocks for blast furnaces

Refractories ◽  
1983 ◽  
Vol 24 (1-2) ◽  
pp. 46-49
Author(s):  
V. G. Sloushch ◽  
A. S. Kheifets ◽  
G. N. Mikhailutsa ◽  
G. I. Krut'ko ◽  
G. E. Karas' ◽  
...  
Keyword(s):  
Nondestructive Testing ◽  
High Alumina ◽  
Blast Furnaces

scholarly journals Damage Mechanism of Copper Staves in a 3200 m3 Blast Furnace

Metals ◽  
2018 ◽  
Vol 8 (11) ◽  
pp. 943 ◽  
Author(s):  
Haibin Zuo ◽  
Yajie Wang ◽  
Xuebin Wang
Keyword(s):  
Cooling Water ◽  
Damage Mechanism ◽  
Cooling Capacity ◽  
Poor Quality ◽  
Economic Losses ◽  
Blast Furnaces ◽  
Hydrogen Attack ◽  
Water Pipes ◽  
The Past

Copper staves have been widely applied in large blast furnaces especially those whose inner volumes exceed 2000 m3 due to high cooling capacity. In the past decade, copper staves suffered severe damages in some blast furnaces, which not only shortened their campaign lives, but also caused huge economic losses. In order to make out this phenomenon, the damage mechanism of copper staves was investigated via analyzing the chemical composition, thermal conductivity, metallographic aspects and microstructure in this paper. As a result, the working state was more likely to damage copper staves instead of their materials. At the beginning, the poor quality of the coke and the large bosh angle promoted the development of edge airflow, which intensified the erosion of refractory materials, resulting in the fall-off of slag crusts and damage of cooling water pipes. After repair, the cooling capacity of copper staves still declined, causing the temperature to rise easily; consequently, hydrogen attack happened when the temperature reached 370 °C, which degraded the performance of copper staves. Therefore, copper staves were worn too quickly to form slag crusts, which finally failed under the hydrogen attack and the scouring of the edge airflow at high temperatures.

Disease and Affect

2019 ◽  
pp. 35-62
Author(s):  
Derek Schilling
Keyword(s):  
Working Class ◽  
Blast Furnaces ◽  
Industrial Structures ◽  
Plant Closure ◽  
Industrial Landscape ◽  
North Eastern ◽  
Productive Labour ◽  
Plant Closures ◽  
Heritage Industry

Decades of plant closures in metropolitan France have created a heightened awareness of the disused quality of the country’s industrial landscape. Even as a burgeoning working-class heritage industry has attempted to rehabilitate some physical sites to educational or touristic ends, documentary filmmakers have turned to human communities that in the age of ‘délocalisation’ have been forcibly evicted from sites of productive labour. Drawing on the travelogue Et la vie (Denis Gheerbrant, 1991), the plant closure exposé Silence dans la vallée (Marcel Trillat, 2007) and the testimonial poetic meditation Le Chemin noir (Abdallah Badis, 2012), this chapter highlights a recurring documentary figure, namely the image of individual workers who explicate their present and past situation against the backdrop of blast furnaces, mine pits, slag heaps, or other disused industrial structures across the blighted regions of northern and north-eastern France. Filmed on the site of its expropriation, the labourer’s body becomes strongly performative, affirming the imperatives of collective working-class memory and lending layered meaning to otherwise mute landscapes. By re-presenting affect-laden speech and gesture, filmmakers negotiate oppositions between visibility and invisibility, technology and nature, nostalgia and futurity, so as to reassert documentary’s micropolitical purchase upon the real.

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