08. Srecko Stopic

The hydrometallurgical processing of nickel lateritic ores begins with, S., et al, Hydrometallurgical processing of nickel lateritic ores, pp. 1033–1047 an acidic solution (Dry &Haris, 2012, pp.20-35). The dominant acid so far has been sulphuric acid, but research work has been published on the process using hydrochloric acid or nitric acid.

An innovative process for extracting scandium from ...

1. Introduction. Lateritic nickel‑cobalt ores, which form as a result of intensive weathering of ultrabasic rocks in tropical or sub-tropical regions, are important deposits in terms of their nickel and cobalt content, as they account for >60% of the world's nickel resources (Ma et al., 2017; U.S. Geological Survey, 2018).Unlike sulfide deposits that occur deep under ground, laterites ...

KINETIC MODELS OF NICKEL LATERITE ORE LEACHING PROCESS ...

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.

(PDF) Nickel laterite processing technologies – where to next?

Production of nickel from laterite ores has occurred for over 100 years beginning with processing of garnieritic ores from New Caledonia. However, until now the world nickel supply has been ...

Salinity in Nickel Laterite Processing

The effect of salinity on the processing of various nickel laterite ores is discussed. In particular, the presence of . high concentration chloride, sulphate, sodium, calcium and magnesium is addressed. Key unit process operations affected by these ions include ore preparation, pressure acid leaching, counter-current decantation and product

Pressure Acid Leaching of Nickel Laterites: A Review ...

A review of the literature over the past 30 years on the processing of nickel laterites by high temperature acid leaching has been carried out to provide a better understanding of the mineralogy, leaching process chemistry and effect of operating conditions on nickel …

Processing of Nickel Laterite Ores on the Rise

Jun 18, 2020· Separation and recovery of iron and nickel from low‒grade laterite nickel ore using reduction roasting at rotary kiln followed by magnetic separation …

Research on Selective Reduction of Laterite Nickel Ore by ...

In this paper, thermodynamic analysis on reduction of lateritic nickel ore by CO2/H2 mixed gas was performed based on activity theory. Effects of CO2/H2 ratio and temperature on selective reduction of laterite ore were investigated. The calculation result shows that the metallization of Fe and Ni could be promoted by each other because of the variation of the Fe and Ni activity, which accounts ...

Laterite - an overview | ScienceDirect Topics

S.K. Haldar, in Mineral Exploration, 2013. 4.5.2.3 Laterite. Laterite is a consolidated product of humid tropical weathering predominantly composed of goethite, hematite, kaolin, quartz, ± bauxite and other clay minerals. It is red, brown to chocolate colored at the top showing hollow, vesicular, and botryoidal structure. It changes progressively from a nodular iron oxide-rich zone at the top ...

Ore mineralogy of nickel laterites: controls on processing ...

(2011). Ore mineralogy of nickel laterites: controls on processing characteristics under simulated heap-leach conditions. Australian Journal of Earth Sciences: Vol. 58, THEMATIC ISSUE - A tribute to the contributions of Ernie Nickel, pp. 725-744.

Nickel Processing | Nickel | Smelting - Scribd

Ferro-Nickel Process Besides laterite ore, coke and/or coal are the other second raw materials that are needed in ferro-nickel production. Coke or coal is needed as a reducing agent. Ferro-Nickel Process 1. Drying takes place in a directly-fired rotary dryer where the …

Nickel processing - Extraction and refining | Britannica

Nickel processing - Nickel processing - Extraction and refining: 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 ...

Smelting of difficult laterite ores: Mineral Processing ...

(2015). Smelting of difficult laterite ores. Mineral Processing and Extractive Metallurgy: Vol. 124, No. 1, pp. 35-46.

Direct Smelting of Chromite and Laterite Ores with Carbon ...

Chromite and laterite ores from local sources were smelted in a vertical tube furnace with activated carbon as reducing agent at 1400°C to 1550°C using graphite crucible under argon atmosphere. It is shown that the grade and composition of the ore are the main factors determining the feasibility of smelting a mixture of chromite and laterite ores to produce a Fe-Ni-Cr crude alloy.

High Pressure Acid Leach - Caldera Engineering

Overview. High Pressure Acid Leach (HPAL) is a process used to extract nickel and cobalt from laterite ore bodies. The HPAL process utilizes elevated temperatures (roughly 255 degrees Celsius), elevated pressures (roughly 50 bar or 725 psi), and sulfuric acid to separate nickel and cobalt from the laterite ore.

Nickel Laterite's Integral Role in the Coming Nickel Boom ...

Currently, the sulphide ore mainly feeds class 1 nickel users, and the laterite ores mainly feed the stainless steel industry (which, by the way, currently accounts for 2/3 of the global nickel demand). Nickel Laterite Ore Processing. Nickel laterite ore processing depends on the zone from which the ore …

MURDOCH RESEARCH REPOSITORY

A review has been completed of current and proposed processing technologies for nickel laterite ores. Although future supplies of nickel depend on laterite ores, their processing is inherently energy intensive and expensive as, unlike sulphide ores, they cannot be significantly upgraded, meaning the entire ore needs to be treated in the process ...

Mechanism of sodium chloride in ... - Scientific Reports

The laterite ore sample used in this study came from Yunnan province of China; it belongs to a special kind of laterite nickel ore, which contains approximately 31.49% of magnesium and 0.82% of ...

Nickel processing - The metal and its alloys | Britannica

Nickel processing - Nickel processing - The metal and its alloys: Pure nickel possesses a useful combination of properties, including corrosion resistance, good strength, and high ductility, even at extremely low temperatures. It also possesses useful electronic properties and special magnetic properties. Nickel is a particularly good catalyst for the hydrogenation of unsaturated compounds in ...

The High Temperature Co-Processing of Nickel Sulfide and ...

Line 21: use more suitable scientific terminology for the used word "sweetened". In the introduction section, the authors have sufficiently discussed about the processing of nickel sulfide ores, however, the study also belongs to laterite processing. Hence, the discussion on laterite processing …

Leaching and Solution Chemistry (Chapter 3) - Clays in the ...

By Jian Li, Angus McFarlane, Craig Klauber, Peter Smith Edited by Markus Gräfe, Craig Klauber, Curtin University of Technology, Perth, Angus J. McFarlane, Commonwealth Scientific and Industrial Research Organisation, Canberra, David J. Robinson, Commonwealth Scientific and Industrial Research Organisation, Canberra Publisher: Cambridge University Press

(PDF) Nickel-Cobalt Laterites—A Deposit Model

There is evidence that the production of Ni and Co from laterites is more energy intensive than that of sulfide ores, reflecting the environmental impact of producing a Ni-Co laterite deposit.

Extraction of Nickel and Cobalt from Sulfide Ores ...

[Show full abstract] classic mineral processing techniques such as flotation. The present study proposes a new smelting process for limonitic nickeliferous laterite ore in order to separate nickel ...

Direct Nickel Process Breakthrough Technology

Processing of Nickel Ores and Concentrates '15 2 In the period 2007 to 2009 DNi conducted bench scale test work at DMI's laboratories in Charlotte, North Carolina, USA on a range of laterite …

Beneficiation of Nickel laterites for HPAL processing

The challenges in processing nickel laterite ores using flotation process were comprehensively reviewed. Literature shows that flotation has not been successful to recover nickel from laterite ores.

laterite nickel ore

We can provide you the latest global nickel ore news, precise nickel ore market analysis, verity nickel ore companies and trades. Inquire Now; NBM Production By Smelting Lateritic Nickel Ore . Main Topics 1 Background 2 Lateritic Nickel Ore Trading in China 3 Treating Technologies for Lateritic Nickel Ore 4 Production in China. Inquire Now

Mineralogy and crystal chemistry of a low grade nickel ...

Process Science and Engineering, Commonwealth Scientific and Industrial Research Organization, P.O. Box 883, Kenmore QLD 4069, Australia Received 19 April 2011; accepted 26 August 2011 Abstract: To acquire understanding of Ni enrichment from laterite ore, the mineralogy and crystal chemistry of a low grade limonite type nickel laterite ore ...

Nickel | Geoscience Australia

Processing. After mining, nickel ores are further processed to upgrade their nickel contents from 1-4% typical of the ores to concentrates with grades in the range 10-20%. Concentration involves crushing the ore and separating nickel-bearing from other minerals using various physical and chemical processing …