Results showed that when roasting at 650 °C for 120 s, the desulfurization efficiency was up to 76.98%, while the residual sulfur in the roasted ore was found to be 0.07%. HU et al [24] roasted high-sulfur bauxite ore at 600 °C for 60 min, and the dissolution test was performed at 240 °C and roasted for 60 min.

This article is cited by 30 publications. Mark Ma . Enhancement of Hematite Flocculation in the Hematite–Starch–(Low-Molecular-Weight) Poly(acrylic acid) System.

Keywords: high voltage electrical pulses, crushing, flotation, desulfurization, iron ore 1. Introduction In the last decades, due to the high consumption of iron ore in metallurgy industries, the demands for iron ore have been increasing (Saravari and Shayanfar, 2021). As the high-quality iron ores decrease

The invention discloses a combined use method of an iron ore anion reverse flotation desulfurizing and silicon reducing agent, which comprises the following steps: obtaining iron ore rough concentrates through magnetic selection or magnetogravity combined selection of iron ores achieving base unit dissociation through fine grinding, and adopting anion …

The flotation process for desulfurization and desiliconization of bauxites according 30 to the present invention is further characterized in that the reverse flotation for desulfurization comprises subjecting the bauxites to a primary grinding to obtain a fineness of 60%-85% -0.074mm and then bringing the ore slurry into action with …

For iron ore concentrate with sulfur content as high as 1.19%, sulfur content of the final iron ore concentrate can be reduced to lower than 0.15%, desulfurization degree can reach to higher than 90%, and iron recovery rate can reach to higher than 92%. ... one-rough-one-fine desulfurization flotation is performed, and the final low-sulfur iron ...

4. Desulfurization-Zinc-Sulfur Mixed Flotation-Gravity Separation of Zn-Sn Polymetallic Sulfide Ore. In order to reduce the interference of minerals with good floatability such as pyrite on zinc ...

12.5.1.3 Iron Preparation Hot Metal Desulfurization - Sulfur in the molten iron is sometimes reduced before charging into the steelmaking furnace by adding reagents. The reaction forms a floating slag which can be skimmed off. Desulfurization may be performed in the hot metal transfer (torpedo) car at a location between the blast furnace and

More recently a study on the effects of multi-stage grinding and grind size on desulfurization of high sulphur iron ore was done by Qiu et al. (2015). The samples of the high-sulfurous iron ore ...

Desulfurization Of Iron Ore How To. Desulfurization of iron ores processes and challenges a typical of the high sulfur iron ore from inner mongolia china iron grade of 5306 and sulfur content is 276 the main metal mineral in the ore is magnetite followed by magnetic. Floatation Desulfurization Of Iron Ore.

The desulfurization rate reaches the highest rate of 80.09%. When the mass ratio of coal to iron is 5:2, the desulfurization rate increases slightly with increasing reduced iron powder. ... Effects of particle sizes of iron ore and coal on the strength and reduction of high phosphorus oolitic hematite-coal composite briquettes. ISIJ Int., 54 (1 ...

iron ores with a high content of impurities, such as sulfur, have been processed [2]. Pyrrhotite (Fe1 xS) is a kind of common sulfide which exists in magnetite ore as an associated mineral with little industrial value. The contamination of sulfur emanating from pyrrhotite in magnetite concentrates has been a problem in iron ore smelting process.

In this way, the optimized condition and latest innovations in sulfur removal using flotation are reviewed and the development of leaching and bioleaching techniques for sulfur …

The present work aims to study the feasibility of sulfur removal from Soork iron ore down to lower than 0.1% using the flotation process. According to the characterization analysis, the ore ...

The invention relates to an acid pretreatment-flotation method for high-sulfur magnetite concentrate desulfurization, which is characterized in that in the process of treating iron concentrate desulfurization, firstly, high-sulfur magnetite concentrate is prepared into concentrated ore pulp, then acid pretreatment is carried out to a specific degree, solid …

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 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 …

More recently a study on the effects of multi-stage grinding and grind size on desulfurization of high sulphur iron ore was done by Qiu et al. (2015). The samples of the high-sulfurous iron ore ...

The invention discloses a kind of sulfide flotation activators, are made of the raw material of following parts by weight：04 parts of ammonium oxalate, ammonium binoxalate 04,0 10 parts of copper sulphate；The present invention relates to sulfide flotation technical fields.The present invention is environmentally friendly, and water recycles, and without …

fineness have been found as significant factors influencing the flotation desulfurization performance of high-sulfurous iron ore. Moreover, the separation tests of multi-stage grinding as well as direct one-stage fine grinding were conducted. The results show that desulfurization effect of the former is much better in comparison with the latter.

This paper reviews the industrial practices and fundamental research surrounding iron ore flotation. The advantages and disadvantages of direct flotation, …

In the present study, depressants not widely used in iron ore flotation were tested. The sample used for the tests corresponds to a pre-concentrate from a mine in Mexico and is composed of many Fe ...

The objective of this review was to present and identify the effects of different flotation conditions on removal of specific impurities in iron ore such as quartz, …

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the high-sulfur iron ore desulfurization process provided by the embodiment of the invention can be used for preparing low-sulfur iron ore powder with the sulfur mass fraction of less than or equal to 0.4% by using the high-sulfur iron ore with the sulfur mass fraction of more than or equal to 5%, and has the advantages of simple process and low investment …

the most popular flotation route in iron ore industry, the direct flotation of iron ox ides still appears desirable for some low grade iron ores that contain a vast amount of quartz. For example, at Republic Mine, Michigan, U.S.A., a hematite ore is upgraded from 36.5% Fe to 65.4% Fe with a Fe recovery of 82.5% using the direct flotation route.

1 Desulfurization of hematitic concentrate of iron ore of the Gol-E-Gohar mine using reverse flotation method E. Panahi1, A. Abdollahzadeh2, A. Sam3, M. Jahani4, M. Yaghobi Moghaddam4, A. Mehrani5 ...

In this way, the optimized condition and latest innovations in sulfur removal using flotation are reviewed and the development of leaching and bioleaching …

The desulfurization of iron ore concentrate by the column flotation process is highly nonlinear and complicated . The main objective of the current study …

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%. ... Volumes 1-2 -66.5.3 Iron Ore Flotation. Society for ...