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effect of chrome ore size on smelting

effect of chrome ore size on smelting

Chrome Ores on Ferrochrome Smelting

2015-3-12  Abstract—Chrome ores from six locations across the Bushveld Igneous Complex in South Africa are used to investigate the effects of ore types on the smelting processes, such as the consumption of fluxes, reductant; and most importantly, the consumption of electricity. The electric energy consumption is highly related to the SiO 2

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Smelting chrome ore - ScienceDirect

1975-6-1  Two factors in particular have been identified as having an influence on carbon content; the particle size of the ore, and the MgO/Al^ of the slag. Smelting chrome ore 855 Low carbon levels are more readily attained with a lumpy, coarse ore and when the slag has a MgO/Al^ ratio of approximately unity. Higher values of MgO/Al^ are especially deleterious. The presence of CaO also raises the carbon level. The influence of these factors can be explained by their effect

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Smelting chrome ore - ScienceDirect

1976-1-1  Smelting chrome ore 855 Low carbon levels are more readily attained with a lumpy, coarse ore and when the slag has a MgO/Al 2 0 3 ratio of approximately unity. Higher values of MgO/Al 2 0 3 are especially deleterious. The presence of CaO also raises the carbon level.

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STRENGTH OF CHROMITE BRIQUETTES AND ITS EFFECT

2015-5-22  Strength of Chromite Briquettes and its Effect on Smelting of Charge Chrome / Ferro Chrome 65 The graph in fig.1 shows a significant improvement in the strength of briquettes when grain size remained more percentage below 0.25mm, preferably 60 –

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Optimization of Process Parameter for Smelting and ...

2019-7-1  smelting reduction of the chromite ore having Cr/Fe ratio 2.4 gives approximate the same value of the Ferro-chrome when the smelting reduction was carried at the basicity level of 1. Carbon pick up in the produced Ferro-chrome was more than 7 % which indicates that the Ferro-chrome

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Aspects of SAF Smelting of Ferrochrom

2010-1-5  material the porosity of the ore, and consequently the ease of reducing gas penetration into the particle, may be diminished (Fig.5). On the other hand the partially reduced spinel may react with and dissolve in the molten slag phase, decreasing the effective particle size and influencing the temperature at which the grains

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Production Smelting Technologies for Ferrochromium

2011-3-30  The gangue present in a chromium ore has a significant effect on the temperature of the smelting zone thereby influencing the carbon content of the ferroalloy. An ore having a relatively high MgO content will require a higher smelting temperature, as can be seen from the ternary phase diagram for Al,O^ SiO,-MgO system in Fig. 2.

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Effect of basicity on beneficiated chromite sand

2018-5-15  Farjadi and J. Azari, “ Effect of Chrome Ore Quality on Ferrochrome Production Efficiency ” in Tenth International Ferroallys Congress, INFACON X Proceedings, edited by N. A. Barcza et al. (Document Transformation Technologies, South Africa, 2004), pp. 103– 107.

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Smelting Process of Chromite Ore Fines to Produce

2020-1-29  Ahmed et al. studied the feasibility of making direct chromium alloy by smelting reduction using chromite ore in the electric arc furnace. They proposed that the production of high-chromium iron and steel alloys are feasible by the smelting route of chromite ore at the higher temperature after suitable decarburization by secondary refining.

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The production of stainless steel through smelting ...

2019-12-25  4.2 The Effect Of Metal Carbon Content On The Reduction Of Chromite 27 4.3 The Effect Of Process Temperature On The Reduction Of Chromite 27 4.4 The Effect Of Slag Basicity On The Reduction Of Chromite 27 4.5 Microscopic Examination Of Slag Samples 28. 4.6 Gas Generation 28 5. PROCESS CHARGE BALANCE 29 6. THE PRODUCTION OF STAINLESS STEEL 30

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effect effect of chrome ore size on smelting

2020-8-20  effect effect of chrome ore size on smelting. The Aluminum Smelting Process PubMed Central (PMC) May 08, 2014Aluminum (Al) is a raw material of sustainability in the built environment, technology, and the modern economy. The ease with which aluminum can be resmelted, without losing durability or modifying its original properties, allowed it to ...

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Effect of basicity on beneficiated chromite sand

2018-5-15  Farjadi and J. Azari, “ Effect of Chrome Ore Quality on Ferrochrome Production Efficiency ” in Tenth International Ferroallys Congress, INFACON X Proceedings, edited by N. A. Barcza et al. (Document Transformation Technologies, South Africa, 2004), pp. 103– 107.

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Optimization of Process Parameter for Smelting and ...

2019-7-1  Ferro-chrome from the chromite ore pellets having Cr/Fe ratio 2.6. Calculation of the charge mix for the Cr/Fe ratio 2.6 indicate that for smelting reduction of 40 kg pellets 14.4 kg of the nut coke will required for the complete smelting reduction of the chromite ore pellets. To maintain the 1.0 basicity of

Get Price

Production Smelting Technologies for Ferrochromium

2011-3-30  The gangue present in a chromium ore has a significant effect on the temperature of the smelting zone thereby influencing the carbon content of the ferroalloy. An ore having a relatively high MgO content will require a higher smelting temperature, as can be seen from the ternary phase diagram for Al,O^ SiO,-MgO system in Fig. 2.

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Smelting applications of DC furnaces - Mintek

2012-1-10  Ore size T High >1500°C Low 1000-1500°C Fine 0.01 –10mm Coarse ... effect’ Mintek’s initial work on ‘plasma furnaces’ ... (now part of Samancor Chrome) conducted smelting trials on Tetronic’s pilot transferred-arc plasma furnaces in 1979/80 •Successful metallurgy, but difficult to scale up to ve ry la ge fu naces ASEA’s DC arc ...

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Aspects of SAF Smelting of Ferrochrom

2010-1-5  restricted in size. The residence time in the high temperature smelting zone, defined here as the coke bed (zone 4), is relatively short, possibly of the order of 30-40min. 1.2.5 Slag (Zone 5) Yamagishi [2] and Wedepohl and Barcza [5] found a distinctive slag layer; Ringdalen [8] however, report that “no distinctive slag layer was found”.

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Smelting Process of Chromite Ore Fines to Produce

2020-1-29  The smelting behavior of waste chromite ore fines containing Cr and Ni to produce crude Fe–Cr–Ni–N alloy was investigated in this study. In the experiments, for each heat, liquid steel melt (metal pool 1 kg) was prepared in a 3--capacity laboratory-scale electric arc furnace for the absorption of reduced metals like chromium, nickel, etc., under hydrogen and nitrogen plasma atmosphere at ...

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The production of stainless steel through smelting ...

2016-4-30  4.2 The Effect Of Metal Carbon Content On The Reduction Of Chromite 27 4.3 The Effect Of Process Temperature On The Reduction Of Chromite 27 4.4 The Effect Of Slag Basicity On The Reduction Of Chromite 27 4.5 Microscopic Examination Of Slag Samples 28. 4.6 Gas Generation 28 5. PROCESS CHARGE BALANCE 29 6. THE PRODUCTION OF STAINLESS STEEL 30

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Mathematical Modeling of Refining of Stainless Steel

2012-3-15  The effect of temperature on the process of chromium ore smelting reduction in a converter is significant. The mean reduction rate of chromium ore increases from 0.052 wt%min –1 to 0.175 wt%min –1 with the increasing of temperature from 1540°C to 1580°C.

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SOME ASPECTS OF THE PRODUCTION OF ... - MINTEK

2012-2-7  of DC arc smelting of chromite ores, and compare these results with the guidelines proposed in the literature for submerged-arc furnaces. 1 INTRODUCTION In the conventional production of stainless steels, chromium is generally introduced to the process in the form of Cr-Fe-C-Si alloys, principally as high-carbon ferrochrome or charge chrome.

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effect effect of chrome ore size on smelting

2020-8-20  effect effect of chrome ore size on smelting. The Aluminum Smelting Process PubMed Central (PMC) May 08, 2014Aluminum (Al) is a raw material of sustainability in the built environment, technology, and the modern economy. The ease with which aluminum can be resmelted, without losing durability or modifying its original properties, allowed it to ...

Get Price

Effect of basicity on beneficiated chromite sand

2018-5-15  Farjadi and J. Azari, “ Effect of Chrome Ore Quality on Ferrochrome Production Efficiency ” in Tenth International Ferroallys Congress, INFACON X Proceedings, edited by N. A. Barcza et al. (Document Transformation Technologies, South Africa, 2004), pp. 103– 107.

Get Price

Optimization of Process Parameter for Smelting and ...

2019-7-1  Ferro-chrome from the chromite ore pellets having Cr/Fe ratio 2.6. Calculation of the charge mix for the Cr/Fe ratio 2.6 indicate that for smelting reduction of 40 kg pellets 14.4 kg of the nut coke will required for the complete smelting reduction of the chromite ore pellets. To maintain the 1.0 basicity of

Get Price

Production Smelting Technologies for Ferrochromium

2011-3-30  The gangue present in a chromium ore has a significant effect on the temperature of the smelting zone thereby influencing the carbon content of the ferroalloy. An ore having a relatively high MgO content will require a higher smelting temperature, as can be seen from the ternary phase diagram for Al,O^ SiO,-MgO system in Fig. 2.

Get Price

Smelting applications of DC furnaces - Mintek

2012-1-10  Ore size T High >1500°C Low 1000-1500°C Fine 0.01 –10mm Coarse ... effect’ Mintek’s initial work on ‘plasma furnaces’ ... (now part of Samancor Chrome) conducted smelting trials on Tetronic’s pilot transferred-arc plasma furnaces in 1979/80 •Successful metallurgy, but difficult to scale up to ve ry la ge fu naces ASEA’s DC arc ...

Get Price

The production of stainless steel through smelting ...

2016-4-30  4.2 The Effect Of Metal Carbon Content On The Reduction Of Chromite 27 4.3 The Effect Of Process Temperature On The Reduction Of Chromite 27 4.4 The Effect Of Slag Basicity On The Reduction Of Chromite 27 4.5 Microscopic Examination Of Slag Samples 28. 4.6 Gas Generation 28 5. PROCESS CHARGE BALANCE 29 6. THE PRODUCTION OF STAINLESS STEEL 30

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How to Recycle Magnesite Chrome in Copper

2017-8-31  Chromite ore in combination with various quantities of magnesia is the primary constituent in basic refractories. In 1975, about 300,000 tons of chrome refractories were consumed in this country. The refractories are used as linings in steelmaking and copper smelting furnaces

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Chrome Tharisa

Chrome products are produced from chromite containing ores, such as the Middle Group Chromitite layers of the Bushveld Complex. The key drivers for the production of chrome are the ferrochrome and stainless steel industries. Some 85% of all chrome produced is converted into ferrochrome by a smelting

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chrome smelting production costs - ilrinascimento.be

chrome smelting machine manufacturer studiareacrema. chrome ore smelting machine . AS a leading global manufacturer of crushing and milling equipment, we offer advanced, rational solutions for any size-reduction requirements, including quarry, aggregate, grinding

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Samancor Chrome Mines - Mining Technology

2021-7-1  Samancor currently operates three flexible smelting systems with capacity in excess of 1Mt/y of ferrochrome at three sites. The mines also feature six Submerged Arc Furnaces (SAF), a metal recovery plant, and a Pellet and Sintering Plant (PSP). Production. In 2000, Samancor Chrome

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Effect Of Chrome Ore Size On Smelting - Finsa

Figure 1 Chrome ore fines grain size vs. briquette strength Strength of Chromite Briquettes and its Effect on Smelting of Charge Chrome Ferro Chrome 65 The graph in fig.1 shows a significant improvement in the strength of briquettes when grain size remained more percentage below 0.25mm, preferably 60 75 in general as per our observation.

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chrome ore smelt - schiesser-holzbau.ch

effect of chrome ore size on smelting – Grinding Mill China STRENGTH OF CHROMITE BRIQUETTES AND ITS EFFECT ON SMELTING Figure 1: Chrome ore fines grain size vs. briquette strength.

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chrome smelting production costs

Effect Of Chrome Ore Size On Smelting. Effect Of Chrome Ore Size On Smelting Low Grades High Power Costs Key Snags To Sa Smith explained that the collapse of the chrome ore spot price had a knock-on effect on ferrochrome, with benchmark prices falling 0.11lb, or 6. Get Price.

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chrome ore smelting equipment - gearex.co.za

ferro chrome smelting plant equipment from . chrome smelting equipment supplier, chrome concentration plant ... effect of chrome ore size on smelting; matrial used in ferrochrome plant; fine chromite ore smelting; Get Price Here !

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Optimization of Process Parameter for Smelting and ...

2019-7-1  Ferro-chrome from the chromite ore pellets having Cr/Fe ratio 2.6. Calculation of the charge mix for the Cr/Fe ratio 2.6 indicate that for smelting reduction of 40 kg pellets 14.4 kg of the nut coke will required for the complete smelting reduction of the chromite ore pellets. To maintain the 1.0 basicity of

Get Price

Aspects of SAF Smelting of Ferrochrom

2010-1-5  restricted in size. The residence time in the high temperature smelting zone, defined here as the coke bed (zone 4), is relatively short, possibly of the order of 30-40min. 1.2.5 Slag (Zone 5) Yamagishi [2] and Wedepohl and Barcza [5] found a distinctive slag layer; Ringdalen [8] however, report that “no distinctive slag layer was found”.

Get Price

DOST SciNet-Phil

2021-6-28  The effect of temperature on the process of chromium ore smelting reduction in a converter is significant. The mean reduction rate of chromium ore increases from 0.052 wt% min-1 with the increasing of temperature from 1540 o C to 1580 o C. (Author's abstract) SUBJECTS Engineering Mathematical model Smelting reduction Stainless steel Chromium ore

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Mathematical Modeling of Refining of Stainless Steel

2012-3-15  The effect of temperature on the process of chromium ore smelting reduction in a converter is significant. The mean reduction rate of chromium ore increases from 0.052 wt%min –1 to 0.175 wt%min –1 with the increasing of temperature from 1540°C to 1580°C.

Get Price

Effect of Carbonizer Particle Size on Smelting

2021-5-14  The smelting of castings uses a high-quality carburant after the high-temperature roasting of petroleum coke with few impurities, which is the most important link in the carburization process. The quality of the carburizer determines the quality of the molten iron, and also determines whether a good graphitization effect can be obtained.

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Smelting Process of Chromite Ore Fines to Produce

2020-1-29  The smelting behavior of waste chromite ore fines containing Cr and Ni to produce crude Fe–Cr–Ni–N alloy was investigated in this study. In the experiments, for each heat, liquid steel melt (metal pool 1 kg) was prepared in a 3--capacity laboratory-scale electric arc furnace for the absorption of reduced metals like chromium, nickel, etc., under hydrogen and nitrogen plasma atmosphere at ...

Get Price