Preparation of high-grade ferronickel from low-grade nickel
The self-reduction and selective oxidation of low-grade nickel laterite using CO 2-CO gas mixtures to prepare a high-grade ferronickel product are feasible. The separation of nickel and iron and the efficient recovery of nickel in the ore were both The known resources of nickel sulfide ores are quickly diminishing; to satisfy future nickel demands, nickel laterite deposits are now being investigated as an Preparation of high-grade ferronickel from low-grade nickel
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Upgrade of nickel and iron from low-grade nickel laterite by
Article Original Paper Published: 23 August 2021 Upgrade of nickel and iron from low-grade nickel laterite by improving direct reduction-magnetic separation Thus, microwave irradiation may be a promising route in the processing of low-grade laterite ore to recover nickel and iron. In this study, rapid reduction using Separation and recovery of iron and nickel from low-grade
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Preparing Ferro-Nickel Alloy from Low-Grade
Nickel, a valued metal, mainly exists as nickel oxide in laterite nickel ore. Furthermore, a large part of the laterite nickel ore is Some researchers showed that the utilization of approximately 10%wt Na2S2O3 or S, resulted in a product with about 5–14% Ni content and above 90% Migration and Aggregation Behavior of Nickel and Iron
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Separation and Recovery of Iron and Nickel from Low-Grade
Nickel and iron recoveries were 96.72 and 89.08% respectively, which achieved the highly efficient recovery and utilization of iron and nickel from low-grade Separation and recovery of iron and nickel from low‒grade laterite nickel ore using reduction roasting at rotary kiln followed by magnetic separation technique.Efficient Synchronous Extraction of Nickel, Copper,
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Production of Ferronickel Concentrate from Low-Grade
The grades of nickel and iron are improved from 2.13% and 51.12% to 8.15% and 64.28%, and the recovery of nickel is improved from 75.40% to 97.76%. The Iron Ore Recovery from Low Grade by using Advance Methods. ☆. With increasing global demand of iron ores due to the huge requirement of steel all over the Iron Ore Recovery from Low Grade by using Advance Methods
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Chemo-physical concentration of a Low-grade nickel laterite ore
The concentrate obtained at 60 °C and 1.25 M oxalic acid concentration contained 3.2% Ni (∼10% NiC 2 O 4 2H 2 O) and 3.5% Fe with a corresponding concentration ratio of 4.05, enrichment ratio of 3.44 and nickel recovery of 84%. The proposed method appears to provide a promising prospect for exploiting low-grade nickel The resulting sinter is smelted in BF to produce NPI. The process is usually applied for treatment of high iron and low magnesium limonitic laterite ore (nickel grade of 0.7–1.2 wt%) and the nickel grade of NPI An Overview of Nickel Utilization from Laterite Ore
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Calcination of low-grade laterite for concentration of Ni by
However, only 42% of the world’s production of nickel comes from nickel laterites (Gleeson et al., 2003, Sudol, 2005). In recent years, due to the shortage of high-grade nickel sources, much attention has therefore been focused on the utilization of low-grade nickel ores, especially those containing <2.0 wt.% nickel (Lee et al., 2005).The high-grade concentrate used in this work was obtained by flotation of low-grade nickel ore from Jinchuan Group, Gansu Province, China. All chem-ical reagents used in the experiments were analyt-ical grade purchased from the Tianjin Chemical Reagent plant (China). The main chemical compo-sition of the concentrate is shown in Extraction of Metals from Nickel Concentrate by Low
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INVESTIGATION OF SELECTIVE LEACHING PROCESS OF
iron content in the ore. Operation in the electric-furnace generally requires a SiO2/MgO ratio not greater than 2 and an iron content of not more than 20% [2]. The hydrometallurgical processes make possible the complex processing of low-grade nickel oxide ores with energy savings. Today's ammonia leaching processes are improvements As shown in Fig. 2, the nickel grade in concentrate, as well as nickel and iron recovery, increases with the increase of temperature reduction.The reduction rate of lateritic nickel ore improves with the increase of temperature reduction, both for limonite and saprolite. The nickel grade in saprolite’s concentrate is higher than limonite due to its Study of selective reduction in lateritic nickel ore: Saprolite versus
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Thermodynamic analysis of the carbothermic reduction
The high-grade nickel-containing sulfide ores are becoming depleted and also more difficult to mine. of the nickel oxide content for a reduction temperature of 600 °C and a carbon addition of 0.3 kmole/100 kg of ore. At low nickel oxide contents, the recovery increases rapidly, but once above a nickel oxide content of about 1 mass%, theThe self-reduction and selective oxidation of low-grade nickel laterite using CO 2-CO gas mixtures to prepare a high-grade ferronickel product are feasible. The separation of nickel and iron and the efficient recovery of Preparation of high-grade ferronickel from low-grade nickel
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Separation and Recovery of Iron and Nickel from Low-Grade
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 The polymetallic sulfide sample was the low-grade nickel sulphide ore collected from Jinchuan, Gansu, China. Table 1 presents the main chemical compositions of the nodule, and Table 2 shows that of the nickel ore. Fig. 1(a) and Fig. 1(b) show the XRD patterns of the nodule and sulfide ore, respectively. Fig. 2 presents the results of the nickel,Selective extraction performance of Ni, Cu, Co, and Mn
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Extraction of ferronickel concentrate from laterite nickel ore
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.All nickel ores have relatively low nickel content, the classification is as follows: high-grade nickel ore has Ni content greater than 1.8%, middle-grade nickel ore has Ni content between 1.3-1.7%, low Enhanced methods for nickel recovery from low
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Effect of Co-Reduction Conditions of Nickel
The carbothermic co-reduction of nickel laterite ore and red mud realized the simultaneous reduction of nickel, iron in laterite ore, and iron in red mud at high efficiency. Nickel and iron in nickel laterite ore 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 aRelationship between process mineralogical characterization
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Separation and recovery of iron and nickel from low-grade
The ferronickel alloy with a nickel grade of 7.05 wt.% and an iron grade of 71.70 wt.% was produced successfully from low-grade laterite ores in which the recovery ratios of nickel and iron were 92.44% and 91.17%, respectively. Furthermore, these methods could be extended to the reduction behavior and interfacial reaction of silicates in otherA novel method of high-grade ferronickel production was developed using self-reduction and selective oxidation. • Oxidation by CO 2 at a concentration of 70 vol% allowed for a nickel recovery >95% and grade of ~32 wt%.. Metallic nickel and iron were separated by selective oxidation with CO 2, and CO 2 was efficiently utilised.Preparation of high-grade ferronickel from low-grade nickel
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The High Temperature Co-Processing of Nickel Sulfide and Nickel
The pressure oxidation of low-grade nickel sulfide concentrate with high iron sulfides content generates significant amounts of sulfuric acid that must be neutralized. This acid can be utilized to leach metal values from ores such as nickel laterites. The present study demonstrates the use of a low-grade nickel concentrate generated from Shake flask bioleaching of a low-grade nickel-cobalt-copper sulfide ore from Lao was investigated to test the technical feasibility to recovery metals from this ore. The mineralogical results indicated that the valuable minerals were disseminated finely and the ore had a low content of sulfur and high content of iron and magnesium, which was Investigation of Bioleaching of a Low Grade Nickel-Cobalt
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Metals Free Full-Text Beneficiation of Low-Grade Dilband Iron Ore
This research is aimed at the up-gradation of indigenous Pakistani iron ore, i.e., Dilband iron ore (hematite), by utilizing common metallurgical processes. First, the magnetic properties of the ore were determined. Initially, the iron ore samples contained 34 wt. % Fe in addition to other gangue materials. Therefore, the ore was subjected to a A new extraction technology of chlorination roasting with a mixture of MgCl26H2O and NaCl was investigated to co-extract nickel and copper from low-grade nickel ores. The effects of some key factors on the extraction of nickel, copper, and iron were studied, and the results show that,when the roasting temperature is 850°C, the Direct Extraction of Nickel and Copper from Low-Grade Nickel
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