metals Article Preparing Ferro-Nickel Alloy from Low-Grade Laterite Nickel Ore Based on Metallized Reduction–Magnetic Separation Zhihao Wang ID, Mansheng Chu *, Zhenggen Liu, Hongtao Wang, Wei Zhao and Lihua Gao School of Metallurgy, Northeastern University, Shenyang 110819, China; wangzhihao361@163 (Z.W.);
The low-grade nickel laterite ore used in this study was successfully upgraded through selective reduction by industrialized rotary kilns followed by magnetic separation. The results indicated that both iron metallization extent and nickel metallization extent showed obvious linear correlation. In addition, rational roasting temperature and prolonged grinding …
ABSTRACT In this study, we investigated a nickel laterite ore with Ni content of 1.56 wt% and a red mud with Fe content of 20.98 wt%, the main Ni-bearing mineral in the nickel laterite ore was nickel-lizardite, and the main Fe-bearing mineral in the red mud was hematite. A novel process of roasting and magnetic separation was purposed to extract nickel and iron …
Flotation separation Valuable minerals in an ore can be separated from each other, and from worthless gangue minerals, by the froth flotation process. ... The recovery of nickel from solution, following leaching of either type of nickel ore, can be achieved by hydrogen reduction, as discussed above, or by electrolysis. Outokumpu uses the latter ...
Semantic Scholar extracted view of "Extraction of ferronickel concentrate from laterite nickel ore by reduction roasting-magnetic separation using spent cathode carbon" by S. Hui et al. ... @article{Hui2023ExtractionOF, title={Extraction of ferronickel concentrate from laterite nickel ore by reduction roasting-magnetic separation using spent ...
DOI: 10.1016/s1003-6326(20)65256-6 Corpus ID: 216163739; Efficient enrichment of nickel and iron in laterite nickel ore by deep reduction and magnetic separation @article{Shuai2020EfficientEO, title={Efficient enrichment of nickel and iron in laterite nickel ore by deep reduction and magnetic separation}, author={Yuan Shuai and Wentao Zhou and Li …
Nickel ore preparation involves a series of processes to prepare the ore for further processing, including crushing, grinding, and classification. These steps help to reduce the ore size, increase the surface area for …
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 stable oxidation state of …
• Nickel-copper-cobalt deposits were mined for over 24 years at Lynn Lake, Canada which at the time it was one of the largest nickel producers in North America. • Since its closure there has …
In some cases, nickel ore may undergo beneficiation processes to improve its quality and increase the concentration of nickel. Beneficiation methods can vary depending on …
ores is through the production of nickel matte after enriching the nickel content of the ore. This is com-monly carried out by magnetic separation, Sotation, or a combinationof both after the ore is comminuted to below 200 m in size. The enrichment depends upon the degree of rejection of the other sulRde and non-sulRde gangue. The maximum grade ...
In this research, efficient iron enrichment was innovatively proposed through "mineral phase transformation - magnetic separation" for the acid-leaching tailings of laterite …
Separation and recovery of iron and nickel from low‒grade laterite nickel ore using reduction roasting at rotary kiln followed by magnetic separation technique.
A novel process for simultaneously extracting Ni and Cu from mixed oxide-sulfide copper-nickel ore with highly alkaline gangue via FeCl 3 ∙6H 2 O chlorination and water leaching
In the current work, nickel was upgraded in ore I (sample from the intermediate zone between saprolite and limonite) from 1.1% to 1.5% at 70% recovery. It should be noted that ore I has the highest amount of quartz among the tested samples (Table 1). This should have helped upgrading nickel in this ore using gravity separation.
Copper Nickel Separation Challenges and Flowsheet ... • A SAG mill would be recommended when an ore has a mixture of both hard and soft material. A t a value between 0.24 and 0.35 is classified as 'hard'. • This indicates that for future SMC testing, that a composite that
Furthermore, Muir and Johnson (2006) demonstrated that in physical beneficiation using gravity, particle size is the key parameter. This work aims to instigate upgrading the …
♦ Flotation machine is a necessary equipment for nickel ore processing. It can effectively separate and purify materials according to their different properties. The outstanding advantages of flotation machine in production are: 1. The impeller of the equipment is always in motion, which can effectively remove the accumulated materials and sundries in the body, …
to 1300°C, the phase of saprolitic nickel ore changes into a complex mineral. The mineral is dominated by olivine (Mg 0.5Fe 0.5) 2SiO 4. 29) 2.3 Direct reduction of laterite nickel ore in industrial scale Most laterite nickel ore processing is carried out using Elkem process. The Elkem process uses Rotary Kiln and
In nature, nickel (Ni) mainly exists in sulfide ore and oxide ore. Nickel oxide ore gets its name for it is a kind of laterite ore with high iron content. Nickel laterite, as the main land-based nickel resource, has total resource of 1.26 billion tons with an average nickel content of 1.28%, accounting for 72% of the total nickel resources.
The composition of low-grade laterite ore from Yuanjiang, Yunnan, China was tested by chemical analysis. Under 7% of CaF 2 for the adjuvant agent and 8% of anthracite for the reducing agent, the main metal nickel and iron in laterite ore (100 g) can be efficiently recovered after high temperature (1250 °C) reduction. The process is shown in Fig. 1.
The main finding of this work was that magnetic separation is effective in recovering 48% of nickel from laterite, increasing the Ni grade in the recovered product from 1.5% to 2.9%, when prior to ...
Flotation of nickel sulfide ore is a key process in the separation and subsequent utilization of nickel. However, efficient separation of nickel is hindered by the presence of magnesium silicates (typically serpentine) [2] that caused hetero-aggregation and entrainment.
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 ...
The production of ferronickel concentrate from low-grade nickel laterite ore containing 1.31% nickel (Ni) was studied by the non-melting reduction magnetic separation process. The sodium chloride was used as additive and coal as a reductant. The effects of roasting temperature, roasting duration, reductant dosage, additive dosage, and grinding time on the …
Abstract Nickel is mostly extracted from sulfide ores, however, laterite ores account for over 60 pct of all nickel resources in the world, and despite its predominance, there is no well-established process to extract nickel from such ores. Nickel in laterites is hosted in many different compounds such as oxides, hydroxides, and silicates minerals. The sulfation-roasting …
Nickel processing - Extraction, Refining, Alloying: The extraction of nickel from ore follows much the same route as copper, and indeed, in a number of cases, similar processes and equipment are used. The major differences in equipment are the use of higher-temperature refractories and the increased cooling required to accommodate the higher operating temperatures in nickel …
ore in China and the higher cost of importing nickel ore, nickel ore with high magnesium concentration has become the main source of raw materials for nickel smelting. A higher MgO concentration increases the slag melting point, weakens the viscous flow characteristics, and makes it more challenging to separate the nickel matte from the slag ...
The low-grade nickel laterite ore used in this study was successfully upgraded through selective reduction by industrialized rotary kilns followed by magnetic separation. …
The selective reduction method at a low-temperature process, which continued with the lateritic nickel ore's magnetic separation process, has been developed [8].Metalization of iron is inhibited, increasing the nickel content in concentrate (magnetic particle) using additives, such as sodium sulfate, sodium carbonate, and sodium chloride [9], [10].
is the high-purity nickel used in electric vehicle lithium-ion batteries. The stainless-steel industry is the primary driver of nickel demand and uses both class 1 and 2 (lower purity) nickel. Class 2 nickel from nickel laterite ores can be con-verted to nickel sulfate; however, it requires high-pressure acid leaching.
In anticipation of future demands, a comprehensive understanding of the chemical and mineralogical characteristics of nickel-bearing minerals is a prerequisite to devising effective nickel beneficiation methods. Of particular importance are markers in the mineralogy of the flotation concentrate that inform beneficiation strategies to improve concentrate grades, …
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
Concentrating the nickel ores usually takes place close to the mine site and involves chemical and physical processes to crush the ore and separate the nickel-bearing and gangue minerals by flotation in the case of sulfidic …
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 on the …
The sticking phenomenon between molten slag and refractory is one of the crucial problems when preparing ferronickel from laterite ore using rotary hearth furnace or rotary kiln processes. This study aims to ameliorate sticking problems by using silicon dioxide (SiO2) to adjust the melting degree of the briquette during reduction roasting. Thermodynamic analysis …
Lateritic ore contributes to 70% of total nickel resources. However, due to its low grades, and comparatively higher impurity constituents, it requires specific preprocessing steps prior to utilization. ... Yasri NG, Separation of nickel from cobalt using electrodialysis in the presence of EDTA, Journal of Applied Electrochemistry, no.4, 30 ...
Abstract In this study, magnesia–nickel silicate ore was investigated, which contained 0.83% Ni and antigorite, chlorite, magnetite (Fe3O4), quartz, and mica as the main minerals. Chloride roasting and magnetic separation were used to treat the ore. The addition of red mud enhanced the transformation of nickel silicate to a strongly magnetic mineral mainly …
In this study, the laterite nickel ore was treated by basic hydrothermal method, and the product was dissolved directly in the form of sodium silicate. ... Separation and recovery of iron and nickel from low-grade laterite nickel ore by microwave carbothermic reduction roasting[J]. J Market Res 9(6):12223–12235. CAS Google Scholar
The process of one-step reduction roasting and magnetic separation was adopted to prepare ferro-nickel alloy from low-grade nickel laterite ore (w(Ni)=1.52%, w(Fe)=14.08%).