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Selective leaching of valuable metals from laterite nickel ore with ammonium chloride-hydrochloric acid solution ... The process of high selectivity reduced chemical use in separation process. ... ammonium chloride solution was used as the chlorination agent and the process was achieved under 2 M of hydrochloric acid, 3 M of ammonium chloride ...
Fig. 3. The effect of the lixiviant type on nickel dissolution: sulfuric acid, hydrochloric acid. Operation conditions: 90 ºC, 2 h, S/L= 0.25 g/cm3, 300 rpm 3.3 Ni extraction by leaching 3.3.1 Effect of the type of acid A series of leaching experiments was conducted with different concentrations of sulfuric and
The laterite ore or concentrate is subjected to a leaching step with a lixiviant comprising hydrochloric acid to leach nickel from the laterite ore. Nickel is extracted with an oxime at a lower pH than other processes for extraction of nickel from solution, especially after separation of iron and cobalt values.
This is the third paper in a series examining the economics of processing a hypothetical nickel-cobalt laterite using commercially applied two processes that are still processes and under ... Novel processes using hydrochloric acid and nitric acidare also under development. ... Solid-liquid separation is important in hydrometallurgical circuits ...
Nickel Laterite Ore Hydrochloric Acid Separation. Nickel Processing 2015 Falmouth 2015813nickel processing 15 falmouth united kingdom 1314 may 2015a hydrochloric acid process route for nickeliferous laterites8 n rice technical session 2 22pyridylimidazole functionalized polyvinylbenzyl chloride nanofibers for the separation of laterite ore. Get ...
A hydrochloric acid process for nickeliferous laterites. A hydrochloric acid process for nickeliferous laterites treating all types of lateritic nickel ore is reported in fairly general terms This paper presents an update 15 gL and its separation from magnesium andor iron to a tenor compatible with recovery methods This can be achieved using solvent
The dissolution of lateritic nickel ore in hydrochloric acid solution with hydrogen peroxide was investigated. As a result of the literature review, no study was found on the optimization of the dissolution of lateritic nickel ore for this medium. Hence, it was aimed to determine optimum leaching
The nickel extraction from the serpentinic ore was 37% and 72%, respectively. Leach conditions and analytical results are shown in Table 6. EXAMPLE 6. The -48 mesh limonitic ore fraction of the lateritic ore of Example 5 was further ground and then leached by sulphuric acid in …
Nickel Laterite Ore Hydrochloric Acid Separation. Nickel Laterite Ore Hydrochloric Acid Separation. Isec2014 international solvent extraction conference september 711, 2014 innovation of solvent extraction for metal separation in mixed chloride media case studies for different value metals v lakshmanan1, rridhar1, m halim1 summary solvent extraction is one of the important unit processes in ...
The optimum conditions for dissolution were found as leaching time of 240 min, a temperature of 70°C, hydrochloric acid concentration of 3 M, hydrogen peroxide concentration of 0.1 M and without stirring. The experimental results under optimum leaching conditions, showed that the extraction of nickel from lateritic ore was 90.66%.
In this paper, the selective acid leaching of nickel from the pre-reduced limonitic laterite under moderate HPAL conditions was studied. For the calcine with reduction degree of 93.4%, about 88.2% nickel could be selectively extracted at 100°C with an acid/ore ratio of 0.164, leaving less then 5.0g/L iron in the solution. Further
No direct leaching tests were reported. Strong (1978) reported a detailed study of the behaviour of various types of lateritic nickel ore in hydrochloric acid leaching systems. The samples were ...
determine the behaviour of lateritic nickel ore from the Eski ehir-MihalJççJk-Karaçam deposit in a hydrochloric acid leach under atmospheric conditions, and the leach experiments were repeated using mixed aquous medias for comparative purposes. In these experimental studies, hydrochloric acid (37%, d:1.19 g/cm3) and de-ionized water were ...
iron.1 Leaching of limonite ore in acid solutions such as sulfuric, hydrochloric and nitric acid would result in a pregnant solution that contains nickel, cobalt, iron, magnesium and some other elements in lower concentrations such as chromium, aluminum and manganese. Recent trend in extraction of nickel and cobalt from laterite ore through
Nickel Processing 2015 Falmouth. nickel processing 15 falmouth united kingdom 1314 may 2015a hydrochloric acid process route for nickeliferous laterites8 n rice technical session 2 2 2pyridylimidazole functionalized polyvinylbenzyl chloride nanofibers for the separation of laterite ore.
Ca2859035a1 Separation Of Iron From Value Metals. The invention provides a process for the leaching of a laterite ore, concentrate, tailings or waste rock for the recovery of value metals, at least one value metal being nickel.The laterite ore or concentrate is subjected to a leaching step with a lixiviant comprising hydrochloric acid to leach nickel from the laterite ore, followed by a ...
nickel laterite ore hydrochloric acid separation. Home; product; nickel laterite ore hydrochloric acid separation; product list. K Series Mobile Crushing Plant; Mobile Vibrating Screen; Belt Conveyer; Sand Washing Machine; S5X Series Vibrating Screen; GF Series Vibrating Feeder; Ball Mill; Raymond Mill;
The laterite ore or concentrate is subjected to a leaching step with a lixiviant comprising hydrochloric acid to leach nickel from the laterite ore, followed by a liquid/solids separation step. The liquid obtained is subject to solvent extraction with a dialkyl ketone, to obtain a solution rich in iron and a raffinate.
Selective leaching of valuable metals from laterite nickel ore with ammonium chloride-hydrochloric acid solution Author: Li, Jinhui, Li, Deshun, Xu, Zhifeng, Liao, Chunfa, Liu, Ye, Zhong, Bo Source: Journal of cleaner production 2018 v.179 pp. 24-30 ISSN: 0959-6526 Subject:
Following the growing demand for Ni and Co and the dwindling supplies of sulfide nickel ore, attention has turned toward the more efficient exploitation and utilization of laterite ore. Using ammonium chloride acid solution to leach is an effective method. Our research concerned investigations on the leaching mechanism and leaching kinetics of laterite.
Mar 25, 2020· Although lateritic nickel ores are efficiently leached by pure dilute hydrochloric acid at atmospheric pressure and temperature between ambient and 90oC, the degree of extraction of nickel, as well as iron and magnesium is considerably decreased in the presence of moderate concentrations of the respective cations in the leach liquor. In the case of nickel itself extraction falls to zero at ...
The subject of this study is leaching process of nickel-bearing laterite ore from Ržanovo, R. Macedonia. The influence of sulfuric acid concentration (0.5, 1 and 3 M H2SO4) on the extracted Ni (%, wt.) was studied. The leaching process intensified by magnetic stirring at different temperatures (298, 323, 348 and 363 K) in the time interval of 120 min. was performed.
laterite ore, such as leaching by sulphuric acid, hydrochloric leaching or nitric acid, sulphating process, and so on.3–10) One of the methods commercially applied is the direct pres-sure leaching using sulphuric acid (Moa Bay method) that is operated at the high temperature of 460–523K. In the process, the nickel oxide in the laterite is ...
Mar 29, 2020· Experimental Materials. The saprolitic laterite ore was obtained from Indonesia and milled to an average size of 74 μm. The limonitic laterite ore used in atmospheric hydrochloric acid leaching was the same as the ore used in previous literature [], which mainly consisted of goethite, chrysotile, and siderite ().The contents of Ni and Fe in the limonitic laterite ore were 0.820 wt % and …
Study on leaching kinetics of laterite ore using hydrochloric acid . Aug 31, 2018 Keywords: nickel laterite, hydrochloride acid, kinetics analysis, hydrometallurgy, leaching flotation or gravity separation …
lateritic ores. In this study, nickel extraction from Manisa-Gördes region laterites by hydrochloric acid leaching is aimed. The mineralogical analysis of sample showed that hematite, goethite, dolomite, quartz and smectite are the main minerals in the ore. Attrition scrubbing, cycloning and magnetic separation with permroll were
nickel laterite ore hydrochloric acid separation. But we can use the method of heat treatment and chemical heat treatment to improve its wear resistance and fatigue strength. Compared with the alloy steel, carbon steel has a low price and the low sensitivity of stress concentration. Most of the steel shaft uses the rolling round steel and forgings.
Method. The process of separation of nickel from other impurities can be done by sulfuric acid leaching method and Hydrochloric acid leaching and extraction system. The study design was prepared using the Taguchi-Larger the Better Method. Characterization of laterite nickel raw materials using X-Ray Diffraction (XRD),