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

INTEGRAL INDEX OF QUALITY OF IRON ORE RAW MATERIALS AND PREDICTING COMPOSITION OF PIG IRON

Metallurg ◽  
2021 ◽  
pp. 14-19
Author(s):  
P.I. Chernousov ◽  
S.N. Seregin ◽  
R.E. Grishin ◽  
Ya.S. Tsvily
Keyword(s):  
Iron Ore ◽  
Raw Materials ◽  
Pig Iron ◽  
Integral Index ◽  
Index Of Quality

scholarly journals Iron-Ore Sintering Process Optimization / Optymalizacja Procesu Aglomeracji Rudy Żelaza

2015 ◽  
Vol 60 (4) ◽  
pp. 2895-2900 ◽  
Author(s):  
M. Fröhlichová ◽  
D. Ivanišin ◽  
A. Mašlejová ◽  
R. Findorák ◽  
J. Legemza
Keyword(s):  
Iron Content ◽  
Iron Ore ◽  
Raw Materials ◽  
Size Composition ◽  
Sintering Process ◽  
Iron Ore Sintering ◽  
Iron Ore Sinter ◽  
A Charge ◽  
Iron Ore Concentrate

The work deals with examination of the influence of the ratio between iron ore concentrate and iron ore on quality of produced iron ore sinter. One of the possibilities to increase iron content in sinter is the modification of raw materials ratio, when iron ore materials are added into sintering mixture. If the ratio is in favor of iron ore sinter, iron content in resulting sintering mixture will be lower. If the ratio is in favor of iron ore concentrate and recycled materials, which is more finegrained, a proportion of a fraction under 0.5 mm will increase, charge permeability property will be reduced, sintering band performance will decrease and an occurrence of solid particulate matter in product of sintering process will rise. The sintering mixture permeability can be optimized by increase of fuel content in charge or increase of sinter charge moisture. A change in ratio between concentrate and iron ore has been experimentally studied. An influence of sintering mixture grain size composition, a charge grains shape on quality and phase composition on quality of the produced iron sinter has been studied.

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.

Early Complexes of the Tract “First and Second Island” near the Village of Tanatovо

2020 ◽  
Vol 7 (4 (28)) ◽  
pp. 131-139
Author(s):  
Sergei F. Tataurov ◽  
Irina V. Tolpeko
Keyword(s):  
Bronze Age ◽  
Iron Ore ◽  
Raw Materials ◽  
Stone Tools ◽  
Early Bronze Age ◽  
Late Neolithic ◽  
High Quality ◽  
The Impact ◽  
The Village

As part of the study of the early stages of settlement of the Middle Irtysh region, the multilayered monuments of the tract “First and Second island” near the village of Tanatovо, Muromtsevsky district of Omsk region. Based on the study of ceramics and stone tools, complexes of the late Neolithic - early bronze age belonging to the artyn and Catherine cultures and the Stepanov type of monuments were identified. Specific features of stone processing are described for each stage. Artyn stone processing was characterized by high-quality raw materials and the technique of chipping plates. At the stage of Catherine's culture, the quality of raw materials significantly deteriorates, and the use of local raw materials (swamp iron ore) is noted. In stone processing, there is an increase in the share the technique of chipping flakes. At all stages, the tendency to minimize the impact of the shortage of stone raw materials is well recorded.

scholarly journals Development of the method to operatively control quality of iron ore raw materials at open and underground extraction

2018 ◽  
Vol 5 (5 (95)) ◽  
pp. 13-19 ◽  
Author(s):  
Albert Azaryan ◽  
Andrey Gritsenko ◽  
Annait Trachuk ◽  
Dmitriy Shvets
Keyword(s):  
Iron Ore ◽  
Raw Materials ◽  
Control Quality

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.

scholarly journals The transition to the production of non-bentonite highly basic iron ore pellets on a flux bond is a real solution to the complex problems of raw material preparation and the blast furnace process

2019 ◽  
pp. 2-5
Author(s):  
Zh.V. Svyrydenko ◽  
M.V. Yagolnik ◽  
V.M. Zakharchenko
Keyword(s):  
Iron Ore ◽  
Raw Materials ◽  
Bentonite Clay ◽  
Raw Material ◽  
Practical Significance ◽  
Blast Furnaces ◽  
Iron Ore Pellets ◽  
Ore Pellets ◽  
Output Increase ◽  
Technical And Economic Indicators

Purpose. Show the possibility of producing bentonitic iron ore pellets with basicity of 0.6-1.2 on a flux bond. Methodology. Testing the properties of the flux binder in the production of pellets at different stages of technology. Analysis of the properties of the obtained pellets and technical and economic indicators of the operation of the firing conveyor machine during the periods of pellet production using bentonite clay and using a flux bond. Results. The advantages of the flux ligament compared to the bentonite are shown. The characteristics of the experimental pellets are given and the economic efficiency of using this technology is proved (bentonite output, increase in iron content, as well as the productivity of roasting machines up to 10%). The scientific novelty of the work lies in the fact that the formation mechanism and the rate of hydration of the flux bond as well as the time of formation of the colloidal binder solution have been clarified. A method of preparing a binder flux has been developed, which allows taking into account all the features of the raw materials and the existing products in the agglomeration factories. The practical significance lies in the possibility of introducing a technology for the production of pellets on a flux bundle in the conditions of any mining plant, which allows: to get rid of the use of bentonite clay, to increase the productivity of kiln machines, to reduce the consumption of limestone and coke in blast furnaces, to increase the productivity of blast furnaces. Il 3. Tab. 3. Bibliogr .: 3 titles. Keywords: non-bentonitic pellets, flux binder, efficiency.

scholarly journals Technology elaboration for borate ore utilization at iron ore pellets production

2019 ◽  
Vol 75 (2) ◽  
pp. 198-205
Author(s):  
B. P. Yur’ev ◽  
V. A. Dudko
Keyword(s):  
Iron Ore ◽  
Raw Materials ◽  
Partial Substitution ◽  
Simultaneous Increase ◽  
Blast Furnaces ◽  
Laboratory Studies ◽  
Binding Properties ◽  
Iron Ore Pellets ◽  
Ore Pellets ◽  
Slag Regime

Input of intensifying additives, influencing the strengthening of iron ore pellets, can be one of methods to strengthen the pellets and to decrease the volume of fines in them. Boron oxide ore borate ore can be used as such additives. Study of technology aspects of boron-containing pellets production and elaboration of technology of boron input into Kachkanar vanadiumcontaining raw materials was the purpose of the study, aimed at exclusion from BF burden of sinter, which does not contain vanadium. A possibility was justified to use borate ore at iron ore pellets production by a partial substitution of bentonite. Influence of borate ore additives on pellets metallurgical properties studied. As a result of laboratory studies it was determined, that the borate ore has not binding properties and its utilization is possible only in a mixture with bentonite. Optimal content of borate ore in pellets determined, exceeding of which a decrease of reducibility is observed, accompanied by a considerable swelling, which makes impossible the utilization of such pellets in blast furnaces. It was shown, that input of optimal volume of borate ore additives enables to keep the reducibility and swelling at the level of Kachkanar pellets being produced. The mechanism of borate ore content influence on strength characteristics of burnt pellets and their behavior during reducing studied. The regularity of borate ore additives influence on cold and hot pellets strength determined. It was determined, that at input of 0.5% of borate ore practically does not influence on the pellets reducibility while swelling will be constant. The input of borate ore up to 2% will result in a sharp increase of swelling. The decrease of reducibility with simultaneous increase of swelling of pellets having more than 0.5% of borate ore does not allow using such pellets in blast furnaces. Recommendations provided for slag regime optimizing, decreasing of metal losses with slag and test BF heats of pellets, having optimal additives of borate ore and bentonite carrying out.

scholarly journals Analysis of the scientific and technical level of production and the introduction of innovation technologies in the ore-dressing plant

2020 ◽  
Vol 208 ◽  
pp. 03018
Author(s):  
Maria Kompaniets ◽  
Andrey Plakhin ◽  
Maria Selezneva ◽  
Tatiana Kochergina ◽  
Maria Khokholush
Keyword(s):  
Iron Ore ◽  
Moving Objects ◽  
Raw Materials ◽  
Continuous Process ◽  
Economic Effect ◽  
Qualitative And Quantitative ◽  
Gps Navigation ◽  
Automatic Positioning ◽  
Ore Dressing

The process of obtaining iron ore at ore-dressing plant is a continuous process, so equipment failure at any stage leads to equipment downtime at all other stages. In this case, temporary shipment to the warehouse and from the warehouse of semi-finished raw materials leads to an increase in cost and a decrease in the quality of raw materials. These problems determined the purpose and objectives of the study of the possibilities of using a geographic information system to control moving objects in the main mine of the ore-dressing plant based on the system of automatic positioning using GPS or GPS/AVL (Automatic Vehicle Location). Based on satellite data, it is possible to generate various types of reports that allow to better control the situation - to analyze the qualitative and quantitative side of the ore mining process in quarries, to simulate the situation in order to avoid loss of working time. The basis of the study determined the economic effect of the introduction of GPS navigation in the main mine of the plant.

scholarly journals Increasing the efficiency of blast-furnace smelting by improving the quality of iron ore materials

2019 ◽  
pp. 43-60
Author(s):  
A.S. Nesterov ◽  
L.I. Garmash
Keyword(s):  
Blast Furnace ◽  
Cast Iron ◽  
Chemical Composition ◽  
Coke Consumption ◽  
Iron Ore ◽  
Raw Materials ◽  
Blast Furnace Smelting ◽  
Blast Furnace Dust ◽  
Sinter Mixture

It is noted in the work that when mastering the technology of pulverized coal injection (PUT) at the metallurgical enterprises of Ukraine, it is necessary to intensify work, including research, in the direction of improving the quality characteristics of the sinter, the stability of its chemical composition and strength parameters. The analysis of the quality of iron ore raw materials used in sintering production in Ukraine and foreign countries is carried out. The requirements of international and domestic standards for the quality of raw materials and fuels, providing for the injection of large quantities of firearms into the furnace, are given. A methodology for determining the quality of raw materials developed in the HMI is described. The results of a study of the quality of iron ore raw materials according to the developed method are presented. Based on the analysis of the results of the research, requirements were developed for the quality of granular iron ore wastes and their rational amount in the composition of the sinter charge, and the process for the production of granules was developed. Recommendations have been developed on the use in the sinter mixture of a part of the granular components of secondary waste, which allowed to increase the content of secondary resources in the mixture. As a result, the chemical composition of the sinter was stabilized, its strength was improved, the yield of sinter of the second grade was reduced, the removal of blast furnace dust and coke consumption were reduced. Improving the quality of the sinter and the rational distribution of charge materials over the cross-section of the top of the blast furnace allows for self-renewal of the protective skull, to reduce the removal of top dust by 4.3 kg / t of cast iron, and to reduce coke consumption by 19.6 kg / t of cast iron. The developed measures make it possible to increase the competitiveness of products, even at the additional cost of preparing the sinter mixture for sintering.

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