Beneficiation of Low-Grade Bauxite: A Case Study of
For the present study, the representative samples of laterite and low-grade bauxite were collected from bauxite deposits located in West coast and east coast deposits of India. In west coast (Maharashtra) deposits, the thickness of bauxite is 2.5 m (avg). It is pisolitic in nature and contains moderate to high alumina as well as low silica [11 ...
(Open Access) Nickel production from low-iron laterite …
In 2011, the nickel production in China amounted to 446 kilotons, with the proportion of electrolytic nickel and nickel pig iron (NPI) registering 41.5% and 56.5%, respectively. NPI is a low-cost feedstock for stainless steel production when used as a substitute for electrolytic nickel.
Beneficiation of Low-Grade Bauxite: A Case Study of
5.2 Beneficiation/Upgradation Studies on Laterite and Low-Grade Bauxite The abundant resources of low-grade bauxite and laterite are characterized by high iron oxide, …
Upgrading low nickel content laterite ores using
... The reduction of nickel laterite was carried out at 1050-1150 °C to prevent the formation of semi-fused nickel ore, which causes the kiln-ringing problem in the rotary …
Beneficiation of nickeliferous laterite by reduction roasting …
DOI: 10.1016/J.MINENG.2012.03.012 Corpus ID: 93636673; Beneficiation of nickeliferous laterite by reduction roasting in the presence of sodium sulfate @article{Li2012BeneficiationON, title={Beneficiation of nickeliferous laterite by reduction roasting in the presence of sodium sulfate}, author={Guanghui Li and Tangming Shi and …
Effective Utilization of Limonitic Nickel Laterite via …
Limonitic laterite contains low iron and nickel grades and much high smelting minerals and loss on ignition (LOI), identified as refractory iron ore for sintering.
(PDF) Beneficiation of Low-Grade Laterite Nickel by …
With increasing temperature to 650°C low structure is increased, the polarity of bond increases, 218 Research Article Iran. J. Chem. Chem. Eng. Beneficiation of Low-Grade Laterite Nickel ... Vol. 37, No. 3, 2018 Fig. 8: SEM images of laterite sample, Before (Right) and after (Left) during 60 minutes calcination at 750°C.
Separation and Recovery of Iron and Nickel from Low …
grade nickel laterite ore containing a nickel content of 1.92%. 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 laterite nickel ore. Keywords Nickellateriteore .Ferronickel .Rotarykiln .Reductionroasting .Magneticseparation 1 Introduction
Beneficiation of Low-Grade Bauxite: A Case Study of
5.2 Beneficiation/Upgradation Studies on Laterite and Low-Grade Bauxite. The abundant resources of low-grade bauxite and laterite are characterized by high …
Recent Progress in Hydrometallurgical Processing of Nickel …
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 converted to nickel sulfate; however, it requires high-pressure acid leaching. Much of the laterite ore comes from the Philippines, Indonesia, and New Caledonia.
An Overview of Nickel Utilization from Laterite Ore
The large volume of slag and the low temperature of molten iron in BF cause difficult separation of slag and iron, due to the low grade of iron in laterite ores. Especially in the smelting of saprolitic laterite ore with low iron content (15–30 wt% TFe) and high magnesium (15–25 wt% MgO) content, the huge amount of smelting slag and …
High-Grade Ferronickel Concentrates Prepared from Laterite …
This work provides guidance for effectively exploiting and utilizing low-grade laterite nickel ore to produce high-grade ferronickel concentrate with low energy consumption, which is of great significance in maintaining the nickel supply and holds promising potential in the application of blast furnace iron smelting, stainless steel …
Effective Utilization of Limonitic Nickel Laterite via …
Limonitic laterite contains low iron and nickel grades and much high smelting minerals and loss on ignition (LOI), identified as refractory iron ore for sintering. Thus, sinter pot tests of limonitic laterite via pressurized densification sintering and its intensification mechanism were conducted, and the industrial application prospect was …
Efficient recovery of iron and chromium from laterite …
The chromium and iron content in NAPL laterite residue could reach 2.0 wt% and 60.0 wt%, respectively, which is a good resource of chromium and iron [10,12,13]. However, the laterite residue was deposited in most nickel hydrometallurgical industries, which didn't cause resources waste, but damaged the environment seriously.
Original ArticleImproved beneficiation of nickel and iron …
Abstract. As is well known, the process of direct reduction and magnetic separation is effective route to deal with low-grade saprolite laterite, but generally limited by the reduction of nickel (iron)-bearing minerals and growth of Fe-Ni alloy particles in the …
Carbothermic Reduction of Nickeliferous Laterite Ores for …
Laterite ores are not amenable to concentration by physical beneficiation methods because of their complex mineralogy.2,6 Due to the inability to produce a high-grade concentrate, ... It is uneconomic to process laterite ore with high iron content and low nickel content via the RKEF route. The RKEF process was first used in the …
Efficient recovery of iron and chromium from laterite …
In China, most iron ores are low grade (<33%), complex in phase structure and combined closely between iron and gangue minerals, which causes iron ores difficult for beneficiation, ... In the laterite residue, iron existed in the form of hematite. The content of chromium and silica is 1.23% and 1.66%, respectively.
Beneficiation Aspects to Improve the Quality of Bauxite …
The studies carried out on laterite (ferruginous, aluminous, siliceous) and low-grade bauxite indicated that the ore can be upgraded with relevance to reduction in iron oxide, silica and ...
Nickel Laterite Beneficiation and Potential for
This review summarizes the latest nickel laterite upgrading studies reported in the literature which use physical beneficiation – only studies reported after the most …
Upgrade of nickel and iron from low-grade nickel …
mineral powders (such as iron ore concentrates and limo-nitic laterite ore) as nucleating agents for the growth of ferronickel particles, which can contribute to the recycling of nickel from low-grade nickel laterite [29, 30], but it is difficult to obtain the products with high-grade nickel because of the high Fe/Ni of nucleating agents.
Laterite nickel hydrometallurgical residues characterization …
Laterite nickel hydrometallurgical residues characterization and potential utilization of valuable elements. Approximately 80% of the hydrometallurgical process of …
BENEFICIATION OF LOW GRADE IRON ORE FINES BY MAGNETIZING ROASTING
It performs low iron grade (41.88%) and high silica and aluminum oxide contents (18.47% and 9.46%, respectively). Around 54.74% of size distribution belong to -325 mesh fraction. Limonite iron mineral dominates in the ore in the range of 80-90% with water content of about 40%. Proven deposits of laterite iron ore are about 222 million tons.
Pre-concentration of nickel in laterite ores using
China mainly imports laterite from the Philippines, of which 50% is limonite laterite with very low nickel content (about 0.8% Ni), high iron grade (about 40%), and crystal water content [8]. ...
Iron deficiency anemia
Symptoms. Initially, iron deficiency anemia can be so mild that it goes unnoticed. But as the body becomes more deficient in iron and anemia worsens, the signs and symptoms intensify. Iron deficiency anemia signs and symptoms may include: Extreme fatigue. Weakness. Pale skin.
Upgrading low nickel content laterite ores using selective …
The laterite briquettes were reduced at temperatures between 900 °C and 1250 °C to determine the effect of temperature on nickel concentration. Fig. 1 shows the nickel and iron enrichment in the concentrate as a function of reduction temperature. The data shows that when the reduction temperature was increased from 1000 °C to 1100 °C, …
Laterite nickel hydrometallurgical residues characterization …
Approximately 80% of the hydrometallurgical process of low-grade laterite nickel ore is converted into residue. The handling of residues from processing is a si ... Facile and inexpensive preparation method of iron phosphate from laterite residue," Ceramics International, ... Effective Separation and Beneficiation of Iron and Chromium …
Preconcentration strategies in the processing of nickel laterite …
Compared with nickel sulfide ore, nickel laterite ore has the characteristics of low nickel content and complex mineralogy, and most of nickel is present as isomorphism hosting in the lattice of some stable mineral phases (Butt and Cluzel, 2013), such as serpentine and goethite, leading to difficulty in the physical beneficiation of nickel ...
Existing and New Processes for Beneficiation of Indian Iron …
The iron ore industries of India are expected to bring new technologies to cater to the need of the tremendous increase in demand for quality ores for steel making. With the high-grade ores depleting very fast, the focus is on the beneficiation of low-grade resources. However, most of these ores do not respond well to the conventional …
Beneficiation of low-grade, goethite-rich iron ore using …
As high-grade iron ore deposits are gradually being depleted, more difficult-to-process ores such as goethite-rich, low-grade iron ores and tailings are now being processed. These ores often contain impurities and require some form of beneficiation in order to achieve the typical grades required for sale to downstream steel producers.
Effective Separation and Beneficiation of Iron and …
DOI: 10.1021/acssuschemeng.0c00219 Corpus ID: 213779281; Effective Separation and Beneficiation of Iron and Chromium from Laterite Sulfuric Acid Leach Residue @article{Lei2020EffectiveSA, title={Effective Separation and Beneficiation of Iron and Chromium from Laterite Sulfuric Acid Leach Residue}, author={Meng Lei and Bao …