— The removal of trivalent metals from the leaching solution is beneficial to the subsequent separation of Ni and Co. The residue of the selective leaching process contains hematite (SI, Fig. S3) ... Developing laterite nickel ore leaching residue as sustainable blast furnace charge. J. Iron Steel Res. Int., 29 (11) (2022), pp. 1760-1770.

 — Abundant low-grade nickel sulfide ore reserves hold potential as nickel resources but are hindered by high magnesium silicate content, limiting efficient utilization. The authors investigated the possibility of extracting nickel from a low-grade ultramafic nickel sulfide concentrate into ferronickel alloy. The nickel extraction study involved …

The effect of operating variables on the recovery and separation of nickel and iron from low-grade laterite ore was initially investigated during microwave ... of the laterite nickel ore is 1.71wt ...

 — In this paper, the process of solid-state metalized reduction and magnetic separation was investigated for preparation of nickel–iron concentrate from a low-grade laterite nickel ore. The effects of reduction temperature, reduction time, amount of dosages, and magnetic field strength on grades and recoveries of nickel and iron were studied. …

 — Nickel ore refers to the naturally occurring rocks or minerals that contain significant amounts of nickel. Nickel is a chemical element with the symbol Ni and atomic number 28. It is a silvery-white metal with a relatively high melting point and excellent corrosion resistance. Nickel is commonly found in the Earth's crust, but it is typically …

 — The results indicated that, after reduction roasting at a temperature of 1150 °C followed by magnetic separation, the nickel content increase from around 1.92 wt.% in …

 — Introduction. Nickel is one of the metals with extremely high strategic value in the development of national economy. Nickel has attracted continuous attentions owing to its superior performances such as good ductility, corrosion resistance, high-temperature resistance, and high strength, which have been considered as an essential basic …

 — In conventional processing of mixed sulfide ores of copper and nickel, the separation of copper from nickel begins in the ore beneficiation plant. Although copper and nickel are mutually soluble in the metallic state, in sulfide ores they occur as distinct minerals, usually chalcopyrite (CuFeS2) and pentlandite (FeNi)8S4).

 — Abstract. The process of deep reduction and magnetic separation was proposed to enrich nickel and iron from laterite nickel ores. Results show that nickel–iron …

 — Nickel is a kind of silvery white ferromagnetic metal firstly separated by Swedish mineralogist A.F. Cronstedt in 1751. It is in the eighth group of the fourth period in the periodic table of elements, with atomic number of 28, atomic weight of 58.71, density of 8.9 g/cm 3 (20 ℃), melting point of 1455 ℃, and boiling point of 2915 ℃. The most …

 — A novel process of roasting and magnetic separation was purposed to extract nickel and iron from the nickel laterite ore and red mud. The nickel laterite ore, …

 — In this study, segregation roasting and magnetic separation are used to extract nickel from a garnierite laterite ore. The garnierite laterite ore containing 0.72% Ni, 0.029% Co, 8.65% Fe, 29.66% MgO, …

 — The success of the sulfation-roasting-leaching process depends on iron behavior. Due to its higher amount, it is sulfated before nickel. However, the stability of iron sulfates is lower than the nickel sulfate and during the decomposition of iron sulfate, the sulfur xide (SO 3) is liberated and reacts with nickel to form nickel sulfate.This …

This study aims to search for efficient separation of arsenic during the roasting process of niccolite. Methods: The arsenic-containing phase was optimized through changing the contents of...

 — In the present study, a complete separation of copper over nickel has been studied from an ammoniacal leach liquor of nickel laterite ore generated via the Caron process.

 — A high nickel grade ferronickel was produced from laterite ore using the selective reduction-wet magnetic separation process, with the addition of sodium sulfate (Na 2 SO 4).The ferronickel concentrate assaying 9.87% Ni, with a nickel recovery of 90.90% can be obtained, when laterite ore was reduced at 1200 °C for 50 min with the addition …

 — The magnetic separation efficiency of nickel from the laterite ore was evaluated using the recovery ratio of nickel R ni using the formula: (1) R Ni = m Ni × β Ni M Ni × γ Ni × 100 % where m Ni is the mass of the magnetic product, g; β Ni is the nickel content in the magnetic product, wt.%; M Ni is the mass of the reduction product, g ...

DOI: 10.1016/j.seppur.2024.127094 Corpus ID: 268406525; Eco-friendly and selective separation of nickel and copper from low-grade nickel sulfide ore via sulfur fixation roasting with MgCO3 followed by sulfuric acid leaching

 — The process of deep reduction and magnetic separation was proposed to enrich nickel and iron from laterite nickel ores. Results show that nickel–iron concentrates with nickel grade of 6.96%, nickel recovery of 94.06%, iron grade of 34.74%, and iron recovery of 80.44% could be obtained after magnetic separation under the conditions of …

 — Among the beneficiation methods of copper-nickel sulfide ore, flotation is the most vital one, magnetic separation and gravity separation are often used as auxiliary beneficiation methods.

 — Ferronickel enrichment and extraction from nickel laterite ore were studied through reduction and magnetic separation. Reduction experiments were performed using hydrogen and carbon monoxide as reductants at different temperatures (700–1000°C). Magnetic separation of the reduced products was conducted using a SLon-100 cycle …

 — Nevertheless, when reduction roasting–magnetic separation is used to treat laterite nickel ore with low nickel content, increasing the dosage by approximately 8–20% inevitably reduces equipment life and increases cost (Liu et al.,2021). Therefore, improving the grades and recoveries of iron and nickel is of major significance.

 — An effective strategy to achieve separation and recovery of iron and nickel from low-grade laterite ore via microwave carbothermic reduction roasting is reported. In …

 — In this paper, the process of solid-state metalized reduction and magnetic separation was investigated for preparation of nickel–iron concentrate from a low-grade …

 — The leaching behavior of nickel and iron in limonite-type laterite nickel ore was studied through ammonium hydrogen sulfate atmospheric leaching. The leaching temperature, ammonium bisulfate concentration, reaction time, and acid excess rate during the nickel dissolution process were optimized using the response surface methodology …

 — The main source of nickel has gradually become the recovery of ferronickel concentrate from low-grade laterite nickel ore. In this work, high-grade ferronickel concentrate was prepared by a reduction roasting-magnetic separation process, and low-grade ferronickel concentrate and CaF2 were used as composite additives to promote …

 — Low-grade saprolite nickel laterite, characterized by complicated minerals composition and fine-grained and complex dissemination, was commonly treated with a low recovery efficiency of Ni and Fe by conventional methods. Hence, an improved direct reduction and magnetic separation process was proposed. Meanwhile, the mechanisms …

separation of low-grade nickel laterite ore TO PRODUCE HIGH NICKEL CONCENTRATE Q Li 1, Y C ui 2, D Zhu 3, J Zhu 4, J Pan 5, H Zhang 6 and G Zheng 6

 — Reduction roasting and magnetic separation experiments illustrate that when the nickel laterite ore with the addition of 7% NCS as the additive and 2% soft coal as the reductant roasts for 50 min ...

Laterite nickel ore is rich in nickel and iron resources, and the nickel element is extracted in the form of nickel salt. However, the acid-leaching tailings of laterite nickel ore (LTLNO), which contain valuable iron resources, have not been cost-effectively recovered. ... followed by magnetic separation, achieving 85 % Fe recovery from LTLNO ...