To increase the selectivity of the magnetic separation process, preferential nickel separation via coal reduction route may be applied. An important factor governing the nickel yield for the process is the basicity ratio of slag. ... Steel Slag contains valuable metals like iron, nickel, magnesium, aluminium, vanadium and titanium. While ...

d istribution in steel slag I-Iere is a way to obtain the M-Fe content in steel slag an d measure the M-Fe size distribution, as shown in Fig. 1. T ypically, (2000± 10) g steel …

Stainless-steel slag is a hazardous solid that has caused severe chromium contamination globally. This study proposes an environmentally benign vitrification process for efficient recycling and solidification of Cr from stainless-steel slag using waste copper slag and coal tar residue. ... 2021). In addition, COPR and C-bearing dust were co ...

melting separation process or magnetic separation process, respectively. The mass and composition of the metallized pellets before separation, along with the alloy and tail slag after separation, were

The mineral dry separation method is a technique for the comprehensive utilization of steel slag. In this process, two products, i.e., steel slag powder with high …

The steel slag concentrate rate is 30.54% and the T.Fe content is 54.10% under the condition of multi-stage wet weak magnetic separation with single magnetic separation time of 1 min, which can replace part of the sintered ore to return to the …

The magnetic separation process relies on the magnetic properties of the particles and the forces acting on them during separation. ... Zhao, H. Optimization of magnetic separation process for iron recovery from steel slag. J. Iron Steel Res. Int. 2017, 24, 165–170. [Google Scholar] Ma, Y.; Du, X.; Shen, Y.; Li, G.; Li, M. …

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 ...

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, …

The modular structural design allows fine-grained minerals with different magnetic susceptibility to be separated in one pass, according to their different processing characteristic. Steel slag, selected from a factory, was crushed, ground and sieved into different particle size ranges for the single-factor magnetic separation experiments.

Magnetic separation is a physical separation process that relies on the different magnetic properties of components in a mixture. By applying a magnetic field, magnetic particles are separated from non-magnetic ones based on their magnetic susceptibility and volume, leading to efficient separation of substances.

In order to solve the problem of solid waste pollution of basic oxygen furnace (BOF) slag in the metallurgical process, this paper took BOF slag as the research object, and carried out oxidation …

Magnetic separation of steel slag. During the integration process of oil sludge pyrolysis with steel slag reduction, the yield of pyrolysis tar reached a maximum of 10.63% at 550 °C. So, the magnetic separation of steel slag was investigated at 550 °C. As is well known, steel slag had a poor reduction effect at low temperatures.

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 ...

Mineral process wastes, such as metallurgical slags nowadays, are of significant metals and materials resources in the circular economy. The usability of iron-making slag is well established; however, steel slag still needs to be utilized due to various physicochemical constraints. In this context, we have reviewed the global steel slag …

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 (iron oxides) at LIMS and paramagnetic ...

Magnetic separation is an effective method to recover iron from steel slag. However, the ultra-fine tailings generated from steel slag become a new issue for utilization. The dry separation processes generates steel slag powder, which has hydration activity and can be used as cement filler. However, wet separation processes …

This study investigates the potential to recover iron and chromium from a chromium-bearing carbon steel Electric Arc Furnace (EAF) slag. This slag contains indeed about 30 wt.% Fe and 2.5 wt.% Cr. However, the minerals are intergrown at small scale (<100 µm) and iron and chromium are mostly contained in spinel phases which makes …

Download Citation | Dry magnetic separation experiment on converter steel slag of small particle size based on new roll separator | A multi-stage roll separator was designed for converter steel ...

Magnetic separation is an effective method to recover iron from steel slag. However, the ultra-fine tailings generated from steel slag become a new issue for utilization. The dry separation processes …

The iron/steel slag processing flow is schematically shown in Fig. 2. Steelmaking slag is subjected to the following four process-es: ① solidify and cooling of the hot molten slag, ② crushing and magnetic separation treatment of the slag to recover the metal iron, ③ crushing and classification of the slag for grain size adjustment

The high temperature insulation allows the steel slag to be fully melted and uniformly mixed, and the slow cooling process applied to the slag provides enough time to grow for RO phase. 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 ...

The work results reported by (Fregeau-Wu et al., 1993) show that phosphorus in steel slag occurs predominantly in di-calcium silicate and to a lesser extent in di-calcium ferrite in solid solution. High gradient magnetic separation was used to separate the P-bearing di-calcium silicate from the iron- and manganese-bearing minerals.

During steel production, the impurities in the hot metal react with the fluxes forming the steel slag. Chemical constituents of this steel slag (SS) are relevant to iron/steelmaking or blended cement manufacture. Harmful impurities present in it, however, limit its recycling to these applications. Japan, Europe, and the US consume a significant …

In order to address the issue of magnetic agglomeration leading to poor magnetic separation efficiency and low activity enhancement, resulting in limited utilization of steel slag fine powder ...

This study investigates the potential to recover iron and chromium from a chromium-bearing carbon steel Electric Arc Furnace (EAF) slag. This slag contains indeed about 30 wt.% Fe and 2.5 wt.% Cr. However, the minerals are intergrown at small scale (<100 µm) and iron and chromium are mostly contained in spinel phases which …

Abstract. 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 …

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 …

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 …

After BOF slag was oxidized at 1300 ℃ for 240 min and cooled in the furnace (1 ℃/min), the grade of magnetic slag obtained by magnetic separation had a grade of 40.26%, a recovery of 70.95% ...