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 …
The increasingly strict environmental regulations and the continuous improvement of steel product standards. The desulfurization treatment of iron ore has become a challenge that steel enterprises must face. This article will provide a detailed introduction to the process flow of iron ore desulfurization from a professional …
After the magnetic separation, the iron concentrate contains sulfur exceeding the standard. To solve this problem, we were investigated carbonate, sodium sulfide, copper sulfate, several new agents -FC activators, by testing only the addition of new agents -FC, down to 0.097% sulfur, sulfur-containing iron ore reached the super Standard. The test …
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 ...
In this work, the feasibility study of desulfurization process for iron ore used in the pelletizing plant was carried out in the fourth line of the Gol-e-Gohar Complex. Two methods were examined for desulfurization process using reverse floatation: 1) grinding the produced concentrate by low intensity magnetic separators (Final… Expand
The iron concentrate treated by the traditional desulfurization process has a desulfurization rate of 50–80 % (Rezvanipour et al., 2018). Flotation is usually used for desulfurization treatment, which will lead to various desulfurization rate depending on different desulfurizer and desulfurization parameters ( Nakhaei et al., 2018 ).
KR (Kanbara Reaction) desulfurization slag is a solid waste that is not sufficiently utilized. This is because the KR desulfurization slag contains 1–2.5% sulfur, which is directly used in steel … Expand
The iron ore sample employed in this study was supplied from magnetic separators concentrate in hematite concentrate plant from Gole-Gohar iron ore complex. The feed sample consisted of 63.3% Fe ...
In this work, the feasibility study of desulfurization process for iron ore used in the pelletizing plant was carried out in the fourth line of the Gol-e-Gohar Complex. Two methods were examined for desulfurization process using reverse floatation: 1) grinding the produced concentrate by low intensity magnetic separators (Final… Expand
DESULFURIZATION OF IRON ORE CONCENTRATE USING A COMBINATION OF MAGNETIC SEPARATION AND REVERSE FLOTATION @inproceedings{Saravari2021DESULFURIZATIONOI, title={DESULFURIZATION OF IRON ORE CONCENTRATE USING A COMBINATION OF MAGNETIC SEPARATION …
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%, …
1. Introduction. As the main type of iron ore, magnetite is the main raw material in the steel industry, which has a strict demand for its sulfur content [1], [2], [3].With the continuous improvement of the quality requirements of iron concentrate, effective desulfurization is of great significance to improve the utilization rate of iron ore …
The obtained iron concentrate reaches 64.28% Fe and 0.42% S respectively with iron recovery of 53.62% and desulfurization rate of up to 90%. Technical basis can be provided for the industrial desulfurization application of high-sulfurous iron ore due to the favorable separation efficiency. © 2014 The Authors.
This study reports the bacterial properties of mixed Acidophilic microbiota with sulfur as electron donor and Acidithiobacillus ferrooxidans (A. ferrooxidans) with FeS 2 …
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 invention relates to a desulfurization method of sulfur-bearing iron concentrate and belongs to the technical field of ore separation. The method includes: preparing sulfur-bearing over-standard iron concentrate into 60-80wt% pulp before wet grinding, adding regulator ZG23 accounting for 300g/t-1200g/t of total dry basis of the iron concentrate …
In this work, the feasibility study of desulfurization process for iron ore used in the pelletizing plant was carried out in the fourth line of the Gol-e-Gohar Complex. Two methods were examined for desulfurization process using reverse floatation: 1) grinding the produced concentrate by low intensity magnetic separators (Final… Expand
Desulfurization using thermal decomposition is a side process in iron ore sintering where the iron ore concentrate turns to roasted pelletized iron ore and this has been …
In this work, the feasibility study of desulfurization process for iron ore used in the pelletizing plant was carried out in the fourth line of the Gol-e-Gohar Complex. Two methods were examined for desulfurization process using reverse floatation: 1) grinding the produced concentrate by low intensity magnetic separators (Final… Expand
In this work, the feasibility study of desulfurization process for iron ore used in the pelletizing plant was carried out in the fourth line of the Gol-e-Gohar Complex. Two methods were examined for desulfurization process using reverse floatation: 1) grinding the produced concentrate by low intensity magnetic separators (Final… Expand
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Pyrite flotation reduced the concentrate sulfur content from 1.12% to 0.33%. On the other hand, the desulfurization results showed an increase in d 80 and a …
Here, we established a biotechnological procedure to efficiently remove sulfur impurities by inoculating the iron concentrate with A. thiooxidans. Different bioreactor modes demonstrated high desulfurization rates from iron concentrates offering a novel clean technology for the iron industry. 2 Methods 2.1 Strains and culture conditions
Under the optimum roasting and magnetic separation conditions, the iron grade of magnetic concentrate reached 66.40 %, the iron recovery was 92.44 %, and …
In this work, the feasibility study of desulfurization process for iron ore used in the pelletizing plant was carried out in the fourth line of the Gol-e-Gohar Complex. Two methods were examined for desulfurization process using reverse floatation: 1) grinding the produced concentrate by low intensity magnetic separators (Final… Expand
1. Introduction. The high amount of sulfur in iron ores causes different problems in the production of iron concentrate, pelletizing (environmentally harmful emission of SO 2), and steel production processes (affects the quality of steel) (Singh et …
the desulfurization of iron concentrate [10]. Nakhaei and Irannajad studied the desulfurization of iron ore tailing of the Gol-e-Gohar Complex using gravity and …
The results in optimal conditions indicated that column flotation was considerably efficient for iron ore desulfurization so that a high purity concentrate with the sulfur content of 0.08 % and ...
Hot metal desulfurization slag is a high-metallic iron content slag produced at a typical steelmaking facility and is currently considered waste. Each year, 50,000 tons of this slag is produced at one particular steelmaking plant. ... ⋅ The desulfurization slag concentrate could be used to produce pellets having acceptable strength after it ...
2.2 Ore concentrate samples. Four different ore concentrate samples, two primary concentrate samples obtained after two rougher magnetic concentration stages …
In this work, the feasibility study of desulfurization process for iron ore used in the pelletizing plant was carried out in the fourth line of the Gol-e-Gohar Complex. Two methods were examined for desulfurization process using reverse floatation: 1) grinding the produced concentrate by low intensity magnetic separators (Final… Expand
The achievement of higher sulfur removal rates has been an important goal since the development of sulfur removal techniques. In this research, an effort is made to separately introduce the various …
