Laterite an overview ScienceDirect Topics. Laterite carry enriched grade of Fe,Al,Mn,Ni,Cu,Ti,and V.Lateritic cover can turn in to lowgrade iron,aluminum,nickelcopper and gold deposits with the increase of metal content.Geochemical studies of laterite have been successfully used in exploration for NiCu and gold deposits in Western Australia …
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]. ...
The newly generated fayalite was the primary reason for the low iron recovery. Meanwhile, a small amount of sporadically embedded ferronickel in the tailings was responsible for the loss of iron and nickel. The proposed innovative technology can realize nonmolten metalized saprolitic laterite ores and effective beneficiation of nickel …
Effect of reductant addition on the grade and recovery of nickel and iron with 3% calcium sulphate addition (Li, et al., 2010).Li et al. (2011) studied the reduction of nickel laterite ore while ...
Lei et al. [5] reported the metallic iron separation from laterite sulfuric acid residue containing 3.71% sulfur and 44.62% iron by reduction roasting in the temperature range of 800-1400 °C. The ...
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.
T. V. Olyunina & D. Yu. Kop'ev. 121 Accesses. 2 Citations. Explore all metrics. Abstract. A new process is developed for metallurgical beneficiation of iron …
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 …
It should be added that segregation of laterite ores prior the flotation process has shown some improvement in upgrading nickel. The segregation process relies on the addition of calcium chloride or sodium chloride and carbon allowing the formation of nickel and iron chlorides at temperatures between 900 and 1150 °C. Iwasaki et al., (1961) and …
This work provides guidance for effectively exploiting and utilizing low-grade laterite nickel ore to produce high-grade ferronickel concentrate with low energy …
This review summarizes the latest nickel laterite upgrading studies reported in the literature which use physical beneficiation – only studies reported after the most …
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.
To improve beneficiation of nickel and iron from low-grade saprolite laterite with 1.29 wt.%Ni and 16.31 wt.%Fe, co-reduction with limonitic laterite ore and basicity optimization were adopted as ...
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.
To improve beneficiation of nickel and iron from low-grade saprolite laterite with 1.29 wt.%Ni and 16.31 wt.%Fe, co-reduction with limonitic laterite ore and basicity optimization were adopted as strengthening measures in this paper with better …
A new process is developed for metallurgical beneficiation of iron laterite nickel-containing (limonite) ores with the formation of a metallic nickel-cobalt concentrate. This process includes reducing roasting of the ores with sulfur-containing additions in the temperature range 1100-1200°C, the fragmentation of the roasting product, and the magnetic …
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 …
Abstract A new process is developed for metallurgical beneficiation of iron laterite nickel-containing (limonite) ores with the formation of a metallic nickel–cobalt concentrate. This process includes reducing roasting of the ores with sulfur-containing additions in the temperature range 1100–1200°C, the fragmentation of the roasting …
The nickel laterite in upper layer of the ore deposit, with higher content of iron (Fe) and lower content of silica (SiO 2) and magnesium (Mg) in general, belongs to the limonite type, and usually contains lower nickel of about 1%, but a certain amount of cobalt (Co), while the nickel laterite in lower layer of the ore deposit, with higher content of …
The beneficiation studies carried out on representative samples of Goa laterite with an aim to reduce iron and silica content as well as enrichment of alumina. It comprises techniques such as ...
Of particular importance are markers in the mineralogy of the flotation concentrate that inform beneficiation strategies to improve concentrate grades, …
Process mineralogy of low-grade laterite nickel ore in Indonesia was systematically characterized and the beneficiation process of mineral components such as limonite, serpentine and chromite was ...
Process mineralogy of low-grade laterite nickel ore in Indonesia was systematically characterized and the beneficiation process of mineral components such as limonite, serpentine and chromite was studied on the basis of process mineralogy. The results show that the low-grade laterite nickel ore is a typical weathering sedimentary metamorphic …
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.
A limonitic laterite sample from Sarchahan deposit (Fars province, Iran) containing 0.8% Ni and 27.3% Fe was used for the experiment and dissolution behavior of nickel and iron during the course of long time leaching runs (52 h) was studied under the influence of temperature (60–90 °C) and oxalic acid concentration (0.75–1.25 M).
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
Abstract: Process mineralogy of low-grade laterite nickel ore in Indonesia was systematically characterized and the beneficiation process of mineral components such as limonite, serpentine and chromite was studied on the basis of process mineralogy. The results show that the low-grade laterite nickel ore is a typical weathering sedimentary
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 …
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 …
The beneficiation studies have been done on PLK and laterite (ferruginous, aluminous, siliceous) indicated that the ore can be upgraded with relevance to reduction in iron …