Recovery of iron from waste slag of pyrite processing using reduction roasting magnetic separation method. G. F. Zhang*1,2, Q. R. Yang1, Y. D. Yang2, P. Wu2 and A. …

Request PDF | On Nov 1, 2023, Wenbo Li and others published Recovery of iron from pyrite cinder by suspension magnetization roasting-magnetic separation method: …

Zhang et al. [127] attempted to recover iron from the waste slag of pyrite processing using a reduction roasting magnetic separation method. The iron content of the concentrate was initially 57% ...

The objectives of the present work are focused on: compare various options for recovery of iron from the waste slag and select the most advantageous option for …

The reduction and magnetic separation procedure of pyrite cinder in the presence of a borax additive was performed for the preparation of reduced powder. The effects of borax dosage, reduction temperature, reduction time and grinding fineness were investigated. The results show that when pyrite cinder briquettes with 5% borax were …

The current study investigated the potential iron contamination removal from the feed to the hydrometallurgical process by calcination followed by magnetic separation.

The X-ray fluorescence (XRF) results reveal that the pyrite sample possesses an iron (Fe) grade of 49.06% and a sulfur (S) grade of 47.49% (as depicted in Table S1). ... Therefore, the EO pretreatment enabled the effective separation of pyrite and molybdenite. EO pretreatment suggested to an environmentally-friendly and low-carbon alternative ...

The results showed that the raw ore for PyC has an iron grade of 56.47%, and after SMR-magnetic separation, magnetic concentrate with an iron grade of 63.24% and an iron recovery of 95.05% could be achieved under conditions of a roasting …

Recovery of Iron from Pyrite Cinder Containing Non-ferrous Metals Using High-Temperature Chloridizing-Reduction-Magnetic Separation. Published: 18 January …

Separation of pyrite and chalcopyrite in deionized water. Particle size −74 + 38 µm. pH = 8 fixed with HCl and NaOH. XFG-II microflotation cell. ... Pyrite, being the most abundant iron sulfide mineral, is commonly associated as a gangue mineral from base metals such as copper, lead, and zinc ...

Pyrite cinder (PyC) is an iron-enriched solid waste material, which is an important iron resource for steel industry. However, the separation or extraction of iron minerals and heavy metals from PyC was ineffective, because of the fine disseminated granularity and the intergrowth between iron minerals and toxic heavy metals during …

Using biochar as reductant, iron concentrate extracted from pyrite cinder as about 61% iron grade could be produced, and the recovery is over 90% under the condition of above 90% grinding particle ...

due to their small particle size, are not efficiently removed [24]. These pyrite framboids are responsible for iron contamination in the PLS and are a common host to trace ele-ments, such as Pb, As, Cd, and REEs [24,25]. Because framboidal pyrite is fine-grained, and pyrites exhibit paramagnetic properties, traditional separation …

However, there are still many difficulties in separation of chalcopyrite and pyrite, because the copper ion has an activation effect on pyrite, while the iron ion has depression effect on chalcopyrite, which leads to poor separation of chalcopyrite and pyrite (Khoso et al., 2020). At present, separation of chalcopyrite and pyrite is mainly by a ...

The activation properties of ammonium oxalate on the flotation of pyrite and arsenopyrite in the lime system were studied in this work. Single mineral flotation tests showed that the ammonium oxalate strongly activated pyrite in high alkalinity and high Ca 2+ system, whereas arsenopyrite was almost unaffected. In mineral mixtures tests, the …

In addition, during hydrometallurgical processes of non-ferrous metals, pyrite causes iron to enter the solution, ... The synergistic effect of lime (CaO) and TCSS caused a strong depression of pyrite through its flotation separation from chalcopyrite in a wide pH range of 7–12. The metallurgical responses showed that the combination of lime ...

Separation and Purification Technology. Volume 51, Issue 3 ... (II) adsorption abilities of pyrite and synthetic iron sulphide (SIS) were studied. Experiments were carried out as a function of pH, Cd(II) concentration, contact time and temperature. Maximum adsorption yields for pyrite and SIS were determined to be 34.2% and 65.8% ...

Through magnetization roasting followed by magnetic separation, 94.70% of iron was extracted from the tailing, and the concentrate with an iron grade of 61.03% was obtained, after 30.0 min of roasting at 800 °C, 1.0 g of pyrite, 16.0 g of the tailing, nitrogen flow rate of 100.0 mL/min, magnetic field intensity of 130.0 kA/m and magnetic ...

Process. 69 (2003) 87–100; Y. Peng, S. Grano, D. Fornasiero, J. Ralston, Control of grinding conditions in the flotation of galena and its separation from pyrite, Int. J. Miner. Process. 70 (2003) 67–82). In the current study, the effect of iron contamination on the flotation of galena and chalcopyrite on a particle size basis was investigated.

Separating chalcopyrite, an important copper-containing ore, from pyrite is an important mineral-processing objective. Herein, we report the synthesis of S-hydroxyethyl-O-isobutyl xanthate (HEIBX), a novel surfactant bearing both hydroxyl and thione groups, through the attachment of a hydroxyethyl group to sodium isobutyl …

In the metallurgical extraction of rare earth elements (REEs), the ratio of contaminant ions to REEs in the leachate dictates the cost and operational efficiency of the downstream processes. The current study investigated the potential iron contamination removal from the feed to the hydrometallurgical process by calcination followed by …

The grinding process plays a crucial role in the floatability of mineral. The present study proposes a scheme to assist in the flotation separation of galena and pyrite by optimizing the choice of grinding media. The effects of grinding media (cast iron balls, steel balls containing 18% chromium, and steel balls containing 12% chromium) on the …

Transition metal doped pyrite (FeS2) thin films: structural properties and evaluation of optical band gap energies. Iron pyrite (FeS2) is a semiconductor comprised of earth-abundant elements and has the potential to be a low cost photovoltaic material with comparatively low toxicity. The properties of transition….

Chen et al. applied four different reagents (H 2 O 2, K 2 Cr 2 O 7, KMnO 4, and NaClO) to prompt the selective flotation separation of pyrite from arsenopyrite. It was found that H 2 O 2 presented the more positive effects on the flotation separation of pyrite and arsenopyrite [13]. To sum up, oxidation-based surface modification was critical ...

the iron grade of pyrite cinder [13, 14]. Although the recovery rate of iron and separation efficiency of iron mineral and gangue are significantly improved, the sepa-ration efficiency is still insufficient. Reduction–magnetic separation has been proved as one of the most effective ways to separate iron mineral and gangue [15, 16].

To separate products of the mechanochemical reaction of pyrite and Al metal powder (Fe-Al 2 S 3 compound), selective leaching method was chosen wherein aluminum sulfide was dissolved and iron remained as leach residue. The selective leaching experiments were carried out in a 250 ml beaker for 45 min at 80 °C using 1.5 M NaOH …

Keywords: pyrite cinder; carbothermic reduction; magnetic separation; metallic iron powder 1. Introduction Pyrite cinders are produced as a by-product of the sulfuric acid industry, containing ...

The first application of the magnetic separation process on industrial minerals is to remove iron containing compounds and minerals such as hematite-limonite [5], taconite [6], pyrite (FeS2), and ...

The separation of chalcopyrite and pyite is not fully solved, and thus more efficient depressants are still needed in industry. This paper used potassium permanganate (KMnO 4) as a pyrite depressant to separate pyrite from chalcopyrite.Flotation and contact angle results indicated that pyrite could be depressed by KMnO 4 at pH 7, while KMnO …

Recovery of iron from pyrite cinder by suspension magnetization roasting-magnetic separation method: Process optimization and mechanism study | Semantic …