desulphurization of an iron concentrate

(PDF) Desulfurization of hematitic concentrate of iron ore ...

Sulfur exists as a troublesome element in the steelmaking process in some iron ore reserves such as Gol-E-Gohar ore deposite. In the case of inaccessibility to sulfur grade less than 0.2% at...

Central composite design for optimization and formulation ...

2018-2-1 · Moreover, the optimal conditions for effective desulphurization of the iron ore concentrate were determined by CCRD. Material and methods. Sample collection and grinding. The iron ore concentrate was obtained from a ball milling-wet magnetic separation process in the Gol-e-Gohar complex. In order to ensure the homogeneity and representativeness ...

Desulfurization of Iron Ores: Processes and Challenges ...

The designed process under the optimized desulphurization conditions was applied to a real iron ore concentrate. More than 75% of the total sulphur was removed via the leaching process.

某铁精矿浮选脱硫试验研究_矿业综合_技术_矿道网

2017-4-12 · As a result, the sulfide in this iron concentrate was successfully removed, making the iron grade of the final concentrate as high as 67.64% and reducing its sulfur content to 0.078%. Keywords :Iron concentrate, Desulphurization by flotation, Regrinding, Activator, Composite collector

Desulphurization of pig iron using calcium carbide based ...

2009-11-20 · Desulphurization of pig iron using calcium carbide based reagents C. BRODRICK SA Calcium Carbide Use of calcium carbide based reagents is a long established practice for the desulphurization of pig iron/hot metal resulting in the removal of the sulphur from the molten metal as calcium sulphide into the slag floating on the molten metal surface.

(PDF) Sulfur content reduction of iron concentrate by ...

2019-10-21 · The effect of flotation time on desulphurization of iron ore concentrate, while keeping slurry pH constant at pH 7.5, PAX and MIBC additions at 200 and 150 g/t, respectively, was investigated from

US4139369A - Desulphurization of an iron melt - Google

An iron melt is desulphurized. To this end, the irom melt is admixed with a powder mixture comprising metallic magnesium and at least one calcium compound, the latter being selected from calcium carbide, calcium oxide, calcium carbonate and dolomite, and the said calcium compound being used in the form of particles with a size of 0.06 to 3 mm, wherein the powder mixture contains 0.1 to 2.5 ...

DESULPHURIZATION OF STEEL AND PIG IRON - Srce

DESULPHURIZATION OF STEEL AND PIG IRON Received – Prispjelo: 2007-12-04 Accepted – Prihva}eno: 2008-06-14 Preliminary Note – Prethodno priop}enje INTRODUCTION The modern metallurgy of iron and steel is first of all oriented in quality improvement, effectiveness and competitiveness of its production. The implementation

(PDF) SIMULTANEOUS DEPHOSPHORIZATION AND

Dephosphorization occurs after the cessation of the desiliconization reaction in melts with high or medium initial silicon contents (0. 34 and 0. 13%, respectively), while it

Leaching of the arsenopyrite/pyrite flotation

2009-10-15 · respectively. Desulphurization levels below 65% were achieved at pH values below 0.15 and iron to concentrate ratios above 1, and the system was characterized by overall very slow kinetics. The reaction system had a direct linear relationship with iron to concentrate ratio and an inverse relationship with pH. An analysis of the pyrite/iron

desulphurization of an iron concentrate - lecarignan.fr

desulphurization of an iron concentrate - chicshoes.co.za. beneficiated iron ore concentrate is presented in Table 1. The table shows that the percentage of phosphorus present in the as-beneficiated ore is 0.49%. Table 2: Result of chemical analysis of iron ore used Element/Compound Fe P SiO 2 Al 2 O 3 52.67 0.49 8.983 6.986 A. Model Validation

Solid State Desulphurization of Iron Ore and Empirical ...

2014-11-30 · This concentrate was dried in air (under atmospheric condition) and - used in the as received condition with particle size; 150m. µ Weighed quantities of the dried iron ore concentrate and powdered KClO 3 (obtained from Fisher Scientific Company Fair Lawn, New Jerry, USA) were mixed on five different iron crucibles.

desulfurization of iron ore how to

Desulfurization of Iron Ores: Processes and Challenges . May 24, 2018 Desulfurization of Iron Ores: Processes and Challenges Hassan Rezvanipour Corresponding Author of sulfur in these materials causes technical problems in steel and alloys and environmental issues in the sintering of iron ore process The achievement of higher sulfur removal rates has been an important goal since the ...

硫酸渣脱硫制备高品质铁精矿研究进展

2017-6-22 · Abstract: The preparation of high-quality iron concentrate from pyrite cinder by means of desulphurization has potential industrial applications. On one hand, the comprehensive utilization of pyrite cinder can be achieved, while on the other hand, the environmental problems that

Model for Computational Analysis of the Concentration

2019-2-5 · desulphurization of Agbaja iron ore concentrate using powdered potassium trioxochlorate (v) (KCIO 3) as oxidant has been reported (Nwoye,2009a). Concentrates were treated at a temperature range 500 – 800oC. Results of the process analysis indicate that oxygen required for the desulphurization process was produced following decomposition of KClO 3

US4139369A - Desulphurization of an iron melt - Google

An iron melt is desulphurized. To this end, the irom melt is admixed with a powder mixture comprising metallic magnesium and at least one calcium compound, the latter being selected from calcium carbide, calcium oxide, calcium carbonate and dolomite, and the said calcium compound being used in the form of particles with a size of 0.06 to 3 mm, wherein the powder mixture contains 0.1 to 2.5 ...

Model for Quantitative Analysis of Iron Upgraded during ...

2010-3-25 · desulphurization of Agbaja iron ore concentrate using powdered potassium trioxochlorate (v) (KClO3) as oxidant has been reported (Nwoye, 2009). Concentrates were treated at a temperature range 500 – 8000C. Results of the process analysis indicate that oxygen required for the desulphurization process was produced

A pre-study of Hot Metal Desulphurization

2012-11-26 · difficult. But there is one problem during desulphurization at the steel company SSAB: the iron losses in the slag are as high as 4.6% of the total produced metal. One part of the slag from desulphurization will be recycled to the blast furnace after crushing and magnet separation. In this way, the iron losses can be lowered. So a project is ...

DESULPHURIZATION OF THE HIGH-ALLOY AND MIDDLE

2015-2-10 · DESULPHURIZATION In the steel production in an EAF, one of the limiting factors for achieving the desired degree of desulphuri-zation is the sulphur contained in the basic composition of the metal-bearing batch of an external steel waste, or of an internally occurring metal (alloying additives, solid pig iron, slag-forming substances, etc ...

Desulphurization of Liquid Steel – IspatGuru

2016-7-30 · Desulphurization of Liquid Steel. Solubility of sulphur (S) in liquid iron (Fe) is quite high. But the solubility of S in solid iron is limited. It is 0.002 % in ferrite at room temperature and 0.013 % in austenite at around 1000 deg C. Hence, when liquid steel cools down, sulphur is liberated from the solution in the form of iron

desulphurization of an iron concentrate - lecarignan.fr

desulphurization of an iron concentrate - chicshoes.co.za. beneficiated iron ore concentrate is presented in Table 1. The table shows that the percentage of phosphorus present in the as-beneficiated ore is 0.49%. Table 2: Result of chemical analysis of iron ore used Element/Compound Fe P SiO 2 Al 2 O 3 52.67 0.49 8.983 6.986 A. Model Validation

Solid State Desulphurization of Iron Ore and Empirical ...

2014-11-30 · This concentrate was dried in air (under atmospheric condition) and - used in the as received condition with particle size; 150m. µ Weighed quantities of the dried iron ore concentrate and powdered KClO 3 (obtained from Fisher Scientific Company Fair Lawn, New Jerry, USA) were mixed on five different iron crucibles.

Solid State Desulphurization of Iron Ore and Empirical ...

2015-4-30 · Agbaja (Nigeria) iron ore concentrate used for this work was obtained from Nigeria Metallurgical Development Centre (NMDC) Jos. This concentrate was dried in air (under atmospheric condition) and used in the as-received condition with particle size; 150 m. A weighed quantity of the dried iron

desulfurization of iron ore how to

Desulfurization of Iron Ores: Processes and Challenges . May 24, 2018 Desulfurization of Iron Ores: Processes and Challenges Hassan Rezvanipour Corresponding Author of sulfur in these materials causes technical problems in steel and alloys and environmental issues in the sintering of iron ore process The achievement of higher sulfur removal rates has been an important goal since the ...

Model for Computational Analysis of the Concentration

2019-2-5 · desulphurization of Agbaja iron ore concentrate using powdered potassium trioxochlorate (v) (KCIO 3) as oxidant has been reported (Nwoye,2009a). Concentrates were treated at a temperature range 500 – 800oC. Results of the process analysis indicate that oxygen required for the desulphurization process was produced following decomposition of KClO 3

Model for Quantitative Analysis of Iron Upgraded during ...

2010-3-25 · desulphurization of Agbaja iron ore concentrate using powdered potassium trioxochlorate (v) (KClO3) as oxidant has been reported (Nwoye, 2009). Concentrates were treated at a temperature range 500 – 8000C. Results of the process analysis indicate that oxygen required for the desulphurization process was produced

DESULPHURIZATION OF COKE- MIXED IRON ORE PELLETS

2012-1-9 · ed that desulphurization is caused by the reduced iron. As the results of this experiment, the desul-phurization effect .due to the addition of CaO was not so effective in Comparison With that of firing in vacuum, specially at higher temperatures. 3-3. Relationship between porosity and desul-phurization. To explain the larger desulphurization ratio

Process for pig iron desulphurization - Mannesmann ...

1997-12-10 · We claim: 1. A process for desulphurization of a pig iron melt for further processing comprising: contacting the melt with a desulphurization reagent in ground form wherein the reagent is a slag accumulating in secondary steelmaking, the slag having a basicity of at least 4, an iron content in the range of 4 to 6 wt.-% and a phosphorous content in the range ≤0.4 wt.-%, or said slag ...

Optimization of Desulphurization Process using Lance ...

desulphurization reagent, carrier gas, liquid iron, top slag, lance and ladle car were presented in Table 1. The gas flow rate of injecting, the injection rate of pow-der, and other parameters were set according to the proto-type. In addition, the initial sulfur content of the slag was sampled and analyzed. The other process parameters can be

Iron Concentrate - Eco - English Wiki

2020-10-6 · Iron Concentrate is created by purifying Crushed Iron Ore. This can be done in one of two ways either dry og wet purification. Each of the metodes to purify the iron has two specific crafting stations that can do the job. The crafting stations come with different ratios, labor cost and time cost. The process to make Iron Concentrate also gives a byproduct of either Tailings or Wet Tailings ...

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