Optimizing the MgO content of the charge in sintering and blast-furnace smelting

Panychev, A. A.; Ganin, D. R.

doi:10.1007/s11015-012-9516-9

Cited by 3 publications

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“…Iron-containing concentrate with a low iron content has a high content of manganese and copper impurities and has no commercial value. Given the lack of metallurgical production in Kyrgyzstan, the inaccessibility of the deposit area, as well as the absence of natural gas, the main method of obtaining metal from such a concentrate can be the metallization process to produce sponge iron, crits in the form of metal granules, where energy grade coal can serve as a reducing agent [6][7]. The metallization process can be carried out by a well-known method -by the production of bloom in a rotating furnace [8][9][10][11].…”

Section: Introductionmentioning

confidence: 99%

The Metallurgical Characterization of Iron-Containing Concentrate

Myrzaliev¹,

Nogaeva²,

Kolmachikhina³

2020

MSF

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The expediency of processing iron-containing concentrate with low iron content, increased content of manganese and copper is considered in the article. To process such a concentrate, a metallization process is proposed to produce sponge iron with a reducing agent - carbon. It was found that in solid-phase reduction at 1150 °C iron is reduced to a greater extent, as well as small particles with a copper content of about 95%, manganese is not recovered. The simulation process of metallization with carbon at a temperature of 1250 °C shows that iron is mainly distributed in the metallic phase, to a lesser extent in slag phases, manganese is distributed in two phases - metal and slag, copper is presented as a separate phase of metallic copper in the composition with iron alloys, and also composes a part of iron alloys. The reduction degree from concentrate to the metallic part is 80 - 91% for iron and 95 - 98% for copper. The presence of metallized particles of various sizes, representing phases of iron with manganese and copper was found in the slags.

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Section: Introductionmentioning

confidence: 99%

The Metallurgical Characterization of Iron-Containing Concentrate

Myrzaliev¹,

Nogaeva²,

Kolmachikhina³

2020

MSF

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“…-комбинированные гравитационно-магнитные схемы с использованием сепараторов с сильным магнитным полем; -способы, основанные на нагреве руды концентрированным потоком энергии в виде лазерного излучения, на облучении руды плазмой, на обработке руды ультразвуком и др. [2].…”

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Review of Ways to Improve the Magnetic Properties of Weakly Magnetic Iron Ores

GANIN,

PANYCHEV

2022

Černaâ metallurgiâ. Bûlletenʹ naučno-tehničeskoj informacii

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The issues of using hardly enriched weakly magnetic iron ore raw materials, which should be widely involved in production in connection with the depletion of reserves of the richest and most accessible iron ore deposits, are considered. A literature and patent review of ways to improve the magnetic properties of weakly magnetic iron ores has been carried out. Magnetizing roasting of ores, which is widely used to convert weakly magnetic minerals into highly magnetic ones, as well as methods based on heating the ore with a concentrated energy flow in the form of laser radiation irradiating the ore with plasma, and treating the ore with ultrasound are considered. The advantages and disadvantages of these methods for increasing the magnetic properties of weakly magnetic iron ores are analyzed. Information about the method of magnetic enrichment of iron ore material developed at the Novotroitsk branch of the National University of Science and Technology “MISIS” is presented. The method includes preparation of iron ore material, crushing and grinding to open ore grains, transportation to a magnetic separator and separation into magnetic and non-magnetic parts. At the same time, the transportation of iron ore material is carried out through a solenoid coil connected to an adjustable high voltage direct current source. The necessity of studying the regimes of magnetic influence on minerals by this method and the prospects of its use for increasing the magnetic properties of hardly enriched weakly magnetic iron ore.

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“…7); the content of carbon fuel in the charge determines the character of the atmosphere in the fuel-combustion zone, the temperature level of the process, the extent to which the charge materials pass through liquid or paste-like states, the degree of assimilation of lime and quartz by the structure of the fi nished sinter, and the output of usable sinter. We used dimensional analysis to construct a mathematical model for calculating the unit productivity of the sintering machine [7,8]:…”

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confidence: 99%

Mathematical Model for Calculating the Unit Productivity of a Sintering Machine

Ganin

Panychev²,

Druzhkov

et al. 2016

Metallurgist

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A mathematical model is constructed to calculate the unit productivity of a sintering machine that is used at Ural Steel to sinter ores and concentrates from the Kursk Magnetic Anomaly. The effect of the parameters of the sintering operation on the machine's unit productivity is analyzed. Keywords: mathematical model, sintering-machine charge, unit productivity of a sintering machine.The ongoing growth in blast-furnace smelting is making it necessary to increase the productivity of sintering machines while maintaining the present quality of the sinter that is produced. The main indices of the sintering operation and potential ameliorative measures can be studied qualitatively and sintering costs can be reduced by studying the sintering process on the basis of mathematical modeling. The interrelationships that are discovered by this approach can then be used to optimize and control the sintering operation.In connection with this, the goal set for the investigation being discussed in this article was to develop a mathematical model for calculating the unit productivity of a sintering machine used to sinter ores and concentrates from the Kursk Magnetic Anomaly (KMA). To do this, we used information in monthly technical reports issued on the performance of the sinter shop at Ural Steel during the period from January 2005 to September 2013. The reports contain the monthly average for the technological and quality indices of the sintering operation carried out on four sintering machines (each with a sintering area of 84 m 2 ). Tables 1-3 show some of these indices for the sinter shop at Ural Steel in the given period after the statistical data was subjected to a preliminary analysis.This statistical data and results obtained from analyzing the information in the studies [1-6] were used to establish a base set of factors that affect the unit productivity of a sintering machine:the total aerodynamic resistance of the bed of charge materials -the pressure gradient over the height of the bed (the difference between the vacuum above the bed on the sintering-machine strand and the vacuum under the bed (in the collection main) (Fig. 1); the height of the bed determines its average gasdynamic resistance (Fig. 2); the bulk density of the charge, this factor being regarded as a characteristic of the charge's composition (Fig. 3); the granulometric composition of the charge determines the capacity of the bed and depends on the initial composition of the charge, the lengths of time taken for mixing and balling of the charge materials, the designs and operating regimes of the mixers and balling drums (which are expressed through the weighted-mean coarseness of the bed, its coarseness based on an equivalent surface, and its porosity); sintering time is the quotient obtained by dividing the height of the bed by the vertical sintering speed (Fig. 4);4 sintering temperature determines the formation of the re-moistening zone (Fig. 5); the moisture content of the charge affects the quality of its mixing and balling; the content of fi nel...

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Optimizing the MgO content of the charge in sintering and blast-furnace smelting

Cited by 3 publications

References 0 publications

The Metallurgical Characterization of Iron-Containing Concentrate

The Metallurgical Characterization of Iron-Containing Concentrate

Review of Ways to Improve the Magnetic Properties of Weakly Magnetic Iron Ores

Mathematical Model for Calculating the Unit Productivity of a Sintering Machine

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