Several desulfurization and iron separation processes have been developed, such as stage grinding-stage separation, flotation, and combined magnetic separation-floatation process [11]. ... The grade and recovery of iron concentrate obtained by grinding and low-intensity magnetic separation reached 66.40 % and 92.44 %, …
The prediction of the amount of sulfur removal in the reverse flotation of iron ore concentrate is an important issue to enhance the process efficiency. When the …
In this research, an effort is made to separately introduce the various processes, industrial practices, and fundamental research …
Request PDF | Evaluation of column flotation froth behavior by image analysis: effects of operational factors in desulfurization of iron ore concentrate | Flotation performance is expected to be ...
The effect of flotation for desulfurizing the iron pelletizing feed has been investigated. The flotation method can reduce the emission of harmful environmental …
Desulfurization efficiency improved and then declined as the temperature increased (Fig. 6c). The reaction is promoted by an increase in temperature. ... Experimental study on iron concentrate recovery from acid leaching residue of nickel laterite by biomass magnetization roasting-magnetic separation. Nonferrous Metal …
A high sulfur content is one of the challenges in the processing of refractory bauxites in China. The high carbon content of bauxite makes it more difficult to deal with. Desulfurization and decarbonization are the critical issues in the efficient exploitation of high-sulfur bauxite resources. An experimental study on the removal of sulfur and …
The contamination of sulfur emanating from pyrrhotite in magnetite concentrates has been a problem in iron ore processing. This study utilized froth flotation to float pyrrhotite away from magnetite using collectors of xanthate and dixanthogen. It was found that xanthate or dixanthogen alone could not achieve selective separation between pyrrhotite and …
Summary Based on a central composite design (CCD), the effect of operational factors as flow rate, froth depth, slurry solids percent, frother/collector dosage, and pH were considered on the flotation column performance in desulfurization process from iron concentrate. Sulfur, total Fe contents, and d80 of the sample were found to be 0.48%, …
Various studies have been increasingly performed on the reduction of sulfur content of iron ores and concentrates. The presence of sulfur in these materials causes technical problems in steel and alloys …
In separation conditions of grinding size -0.045mm accounting for 96.09% and magnetic field intensity of 1240 GS, iron concentrate of TFe64.81 %, S0.18% and iron recovery rate 91.44% was achieved.
Keywords: Thiobacillus ferrooxidans, ferrous iron, sulfur-containing substrate, biological desulfurization DOI: 10.25165/j.ijabe.20241703.8613 Citation: Wang Y J, Chang X P, Tao H G, Wang Z F, Zhang Q G. Comparison of the capacity of biological desulfurization of Thiobacillus ferrooxidans from different sulfur-containing substrates with or ...
" Iron concentrate sample B " (40.70% iron and 0.950% sulfur), and two from secondary concentrate coming after grinding, fl aking and fi nisher magnetic stages denominated " Iron
Owing to the negative effects of sulphur in iron ore on steelmaking process and environment, a tank leaching process was performed in atmospheric conditions to remove the sulphur from the iron ore concentrate and simultaneously to transform sulphide minerals into useful by-products. To achieve desirable sulphur removal rate …
Various studies have been increasingly performed on the reduction of sulfur content of iron ores and concentrates. The presence 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 …
Two methods were examined for desulfurization process using reverse floatation: 1) grinding the produced concentrate by low intensity magnetic separators (Final concentrate of plant) and flotation ...
In this sense, the production of iron concentrate utilizing magnetic concentration of Fe 3 O 4 may result in high sulfur content, primarily due to contamination by pyrrothite (Fe 1-x)S) in the ...
Desulfurization of hematitic concentrate of iron ore of the Gol-E-Gohar mine using reverse flotation method E. Panahi 1, A. Abdollahzadeh 2, A. Sam 3, M. Jahani 4, M. Yaghobi Moghaddam 4, A ...
Chelated-iron desulfurization technology is a wet redox desulfurization process that purifies sulfur-containing flue gas using iron or iron-based chelate as catalysts.
Here, we established a biotechnological procedure to efficiently remove sulfur impurities by inoculating the iron concentrate with A. thiooxidans. Different bioreactor modes demonstrated high …
The iron ore sample was collected from magnetic separators concentrate stream of Gole Gohar iron ore complex with d80 equal to 90µm. Sulfur and total Fe contents of the sample were found to be 0. ...
This study provides a novel cleaner method for the high sulfur iron concentrate that avoids the emission of sulfur-containing substances while ensuring the …
This is a key point in iron ore desulfurization because of high dissolved iron concentration in the iron ore bioleaching reactor. Hyperthermophiles and thermophilic sulfur oxidizing …
The iron ore sample was collected from magnetic separators concentrate stream of Gole Gohar iron ore complex with d80 equal to 90µm. Sulfur and total Fe contents of the sample were found to be 0. ...
The content of sulfur in iron ore concentrate is the major problem of steel making industries. In this regard, the reverse flotation operation is used to reduce the amount of sulfur of the final ...
Recently, the 2000TPD iron concentrate desulfurization plant was successfully completed. From the early stage of the project to the determination of the beneficiation scheme process and the final implementation of the beneficiation project, Xinhai adheres to the customer-first service attitude and adheres to the service concept …
In separation conditions of grinding size -0.045mm accounting for 96.09% and magnetic field intensity of 1240 GS, iron concentrate of TFe64.81 %, S0.18% and iron recovery rate 91.44% was achieved. Acid leaching was studied to strengthen desulfurization.
Currently, there are two main iron concentrate desulfurization technologies: magnetic separation and flotation. Since the pyrite and the pyrrhotite both have strong magnetism, the pyrrhotite and the magnetite are easy to generate out-of-phase magnetic agglomeration in the magnetic separation process, and fine-grain pyrrhotite covers the surface of the …
ABSTRACT. In this study, the desulphurization of iron ore concentrate using reverse flotation was investigated. In this paper first, behavior of the flotation of both pure – pyrite and iron oxides-pyrite with xanthate has been examined based on micro-flotation results and zeta-potential measurements.
improve the recovery of iron ore desulfurization was investigated compared to mechanical crushing. To determine the effect of mechanical and electrical crushing, jaw crusher, cone crusher, and high ... of sulfur in flotation residue of iron ore concentrate was approximately 58% lower than the sample which was undergone through the initial ...