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 ...

Wang et al. studied use of a wet magnetic separation tube device under a magnetic field intensity of 1200 A/m to recover iron from BOF steelmaking slags which were sampled when the slags were ...

The multi-stage wet weak magnetic separation method is suitable for steel slag, with a best magnetic separation intensity of 100 mT in the laboratory range and a single magnetic separation time of 1 min. The steel slag concentrate rate is 30.54% and the T.Fe content is …

Journal of Iron and Steel Resear ch, Int ern ational 21 (2017) 165-170 Sclencefnrcct Contents lists available at ScienceDirect Journal of Iron and Steel Research, International journal hornepage: Optimization of magnetic separation process for iron recovery from steel slag Yuan-pei Lan", Qing- cai Liu':*,

Steelmaking slag is by-product of the steelmaking process and has a high content of iron. In order to recover this iron, steelmaking slag is processed with various methods such as crushing,...

The replacement of coarse and fine aggregates with steelmaking slag found that the optimum percentage of fine and coarse aggregate was 40% and 30%, respectively (Subathra Devi and Gnanavel, 2014). The type of steelmaking slag is not specified in the paper. Higher levels resulted in tensile strength decline.

The most suitable magnetic field intensity is 75 mT, the magnetic material yield is 46.00%, the iron grade is 29.10%, and the iron recovery is 64.12%. Compared with the initial steel slag, the iron grade …

T o improve the efficiency of iron recovery from steel slag and reduce the wear-and-tear on facili­ ties, a new method was proposed by ad ding a secondary screen sizcr to the …

The maximum critical magnetic field strength of Pb0.85Bi0.15 is almost six times larger than that of Pb0.9In0.1, and more rapid growth of the film enhances the critical magnetic field strength ...

Primary magnetic separation tests on a steel slag fine powder material demonstrate that the air fluidized dry magnetic separator effectively separates inert minerals from active minerals in the steel slag powder. The iron grade in the magnetic products reaches 21.81%, which is 6.88% higher than that of the original steel slag, …

WET MAGNETIC SEPARATION OF IRON FROM FINE-GRAINED STEELMAKING SLAGS 1Kryštof FONIOK, 1Vlastimil MATĚJKA, ... grinding efficiency and strength of the magnetic field that is employed in the process determines the amount ... Magnetic fraction (M) of slag FS and LS was significantly enriched with FeO and Fe 3 O 4. On the other

To meet the target, the effect of the following parameters was studied: grain size, magnetic field intensity, thickness of slag layer, moisture content, and re-grinding of the coarser slag particles. ... Bölükbasi, O.S, Tufan, B. (2014) Steelmaking slag beneficiation by magnetic separator and impacts on sinter quality, Science of Sintering 46 ...

Effective surface magnetic field strength below 1000 G. ... Effective separation of iron from steelmaking slag fines occurs below 1000 G, and especially between 200 and 800 G. Though lower magnetic field strength is beneficial to obtaining higher iron content in concentrate products, a higher magnetic field strength of …

If the strong magnetic field is applied to the crushed slag, precipitated calcium-phosphate solution phase can be separated from Fe t O matrix phase due to the large difference of each magnetic property. It has also been indicated by the Waste Input-Output model that the phosphorus recovery from steelmaking slag by the new process proposed in ...

The key operating parameters of upgrading steelmaking slag fines with dry magnetic drum separators, including drum radius, rotation speed, drum surface magnetic field strength, and gradient of the …

The result of magnetic separation of synthetic slag showed that iron rich phase is recovered readily at 0.07 magnetic field intensity (T),intermediate phase dicalcium ferrite is recovered at field intensity (T>0.3) whereas dicalcium silicate will have no effect (Fig). This result was applied on as received and slowly cooled slag.

To improve the efficiency of iron recovery from steel slag and reduce the wear-and-tear on facilities, a new method was proposed by adding a secondary screen sizer to the magnetic separation process according to grain size distribution of magnetic iron (M-Fe) in the slag. The final recycling efficiency was evaluated by calculating the …

To investigate the effects of magnetic field strength, the particle size of the slag, etc., an experiment on magnetic separation has been carried out using simulated dephosphorization slag (18 ...

The chemical composition, phases and morphology of EAF slag are analysed to clarify the form of iron element in slag. Systematically study the influence of magnetic field strength, slag particle size, basicity on the separation of EAF slag magnetic separation, to achieve the efficient separation of iron resources in EAF slag and resourceful use. 2.

(The recovery rate of magnetic iron is calculated as the total amount of magnetic iron in dry magnetic separation concentrate/the total amount of magnetic iron in nondry magnetic separation.). With the increase in magnetic field strength from 800 to 1700 Gs, the yield increases from 8.27 to 27.41%, and the grade decreases from 29.76 …

This magnetic field strength is influenced by the quality of the magnet and the distance from the magnet. ... Enhancement of iron recovery from steelmaking slag fines by process optimization of upgrading the slag fines with dry magnetic separation ... Recycling of steelmaking slag fines by weak magnetic separation coupled with …

The combination of Low and High Intensity Magnetic Separation (LIMS and HIMS) of ground LD slag at 63 μm in wet process may recover ferromagnetic particles …

1. Introduction. Steel slag is the main solid waste generated in the steel-making process, accounting for 15 to 20% of crude steel output [1].China's crude steel output in 2021 was 1.035 billion tons [2], more than half of the global crude steel output (1.9505 billion tons) [3], and the steel slag output exceeded 120 million tons.In contrast, …

Steelmaking Slag Beneficiation by Magnetic Separator and ... are unavailable, but it is estimated that annual world iron slag output in 2013 was around 270 to 320 million tons, and steel slag about 140 to 220 million tons, based on typical ratios of ... According to many researches in this field, during production of 1 ton of steel

Steelmaking slag iron magnetic field intensity. steel making slag iron magnetic field intensity in us Iron oreWikipedia the free encyclopedia This stockpile of iron ore pellets will be used in steel . …

some para-magnetic particles like ferrite are removed at high intensity of magnetic field. ... steelmaking slag. Canadian Metallurgical Quarterly 36, 315-331. ... The resulting low-iron slag has a ...

On the other hand, hot steelmaking slag is mostly cooled naturally on an exclusive yard to be made into crush stone. The processing and usage of steelmaking slag shall be described in detail later. 3. Steelmaking Slag Processing Technology The iron/steel slag processing flow is schematically shown in Fig. 2.

Integrated iron and steel plants generate large amounts of solid wastes. Various studies conducted in the recycling of solid wastes indicate that about 420 kg of solid wastes consisting of blast furnace slag, steelmaking slag, dusts, sludges, mill scales, used refractories, etc. are produced per ton of steel production (Topkaya et al., 2004).

The iron grade in the magnetic products reaches 21.81%, which is 6.88% higher than that of the original steel slag, while the iron grade in non-magnetic products …

If the strong magnetic field is applied to the crushed slag, precipitated calcium-phosphate solution phase can be separated from Fe t O matrix phase due to the large difference of each magnetic property. It has also been indicated by the Waste Input–Output model that the phosphorus recovery from steelmaking slag by the new …