Australia has large reserves of limonite and clay-based laterites that are currently underutilized. This review summarizes the latest nickel laterite upgrading studies reported in the literature which use physical beneficiation – only studies reported after …

Laterite beneficiation; Understandings of established leaching technologies; Removal of impurities from laterite leach liquor; Solvent extraction technologies; and. Novel process …

Nickel laterite production is on the rise and surpassing conventional sulfide deposits. The efficiency of mining and processing nickel laterites is defined by their mineralogical composition.

Nickel laterite HPAL circuits are known for their complexity and have presented a large number of challenges to process engineers worldwide. An attitude commonly encountered by the author is that the beneficiation of the ore is relatively simple and that the difficult problems are in the realms of hydrometallurgy. On a number of …

The present article reviews the insight into the available hydrometallurgical approaches for treating laterite ores and the separation of nickel and cobalt from …

Laterites are generally processed through hydro or pyro-metallurgy and therefore, pre-concentration of nickel before such processes is very important. This …

A beneficiation process for enriching nickel and/or cobalt involves the steps of dividing nickel laterite into limonite type ore and serpentine type ore to beneficiate separately; classifying by screening at least one time after washing the ore; beneficiating separately the products of the various grades obtained; further classifying by gravity separation and …

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 ...

Nickel Laterite Beneficiation and Potential for Upgrading Using High Temperature Methods: A Review

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 …

A specific emphasis is placed on the most promising approach, such as DNi process, to highlight future directions in this regard. MHP is one of the intermediate products of nickel laterite ore processing through the hydrometallurgical route.

The preconcentration of nickel (Ni) laterite ores ahead of Ni recovery by hydrometallurgical processing makes good economic sense. Since Ni-bearing minerals are often finely disseminated through laterite ores, liberation of minerals either high and/or low in Ni content is a prerequisite prior to any form of separation process.

This paper examines the effects of different physical methods on pre-concentration of nickel in laterite ores. The effect of ore mineralogy on choosing the best strategy to upgrade nickel will be ...

Nickel laterite ore is used to produce nickel metal, predominantly to manufacture stainless steel as well as nickel sulfate, a key ingredient in the batteries that drive electric vehicles. Nickel laterite production is on the rise and surpassing conventional sulfide deposits. The efficiency of mining and processing nickel laterites is defined by …

Characterization of Nickel in Chromite Beneficiation Tailings by Mineral Liberation Analysis and Its Recovery by H2SO4 Leaching Followed by Oxalic Acid Precipitation

In this paper, several exploitation scenarios for hydrometallurgical treatment and benefication of lateritic ores will be shown: Direct Nickel Process, Ravensthorpe and Murrin Murrin in …

Examples are given for various scales of operation including commercial operating plants, pilot plants and laboratory investigations. It must be emphasised that this paper is only concerned with the preconcentration stages of a process to extract Ni and often pay-metal cobalt (Co) from nickel laterite ores.

In order to utilize laterite residues efficiently and ease shortages of iron ores, non-molten metallization reduction was proposed to treat laterite residue.

This chapter presents a methodology for studying low-grade lateritic nickel ore, which usually presents complex mineralogy, with widespread nickel in several mineral phases. The study is focused on determining the mineralogy and the distribution of nickel in the bearing minerals. Laboratory assays comprise homogenization, sampling, and particle ...

Cominco Engineering Services Ltd previously developed a process for treating sulphide concentrates of nickel and cobalt to produce both refined nickel and cobalt. The process was tested in an integrated pilot plant campaign in 1996.1 More recently, CESL has adapted the process to treat lateritic ores. Acid pressure leaching of laterite ores is …

The laterite ore utilized in the study was sourced from a mining site located in Morowali, Indonesia. The researchers found that the ZLT model aptly described and characterized this specific leaching process.

The addition of sulfurous compounds improves agglomeration of ferronickel particles, increases the nickel grade and recovery. The highest recovery of 97.91% …

In this paper, the reduction roasting of laterite ore in the absence or presence of sodium sulfate was carried out for nickel beneficiation by wet magnetic separation.

The physical beneficiation of nickel (Ni) laterite ores is clearly a potential method to improve nickel recovery and processing efficiency. Since nickel-bearing …

Hydro–pyro integration of nickel laterite processing. Global nickel laterite production. Existing and advances to state of the art of hydrometallurgical and pyrometallurgical nickel laterite processing. Hydro–pyro integration flow sheet options and case studies. Economics of selected case studies.

The present article reviews the insight into the available hydrometallurgical approaches for treating laterite ores and the separation of nickel and cobalt from hydrometallurgy routes. Caron process, a combination of pyrometallurgy and hydrometallurgy, is also well described in the review.

Mineralogical and geochemical characteristics of a serpentinite-derived laterite profile from East Sulawesi, Indonesia: Implications for the lateritization process and Ni supergene enrichment in the tropical rainforest

Numerous studies have demonstrated that Na2SO4 can significantly inhibit the reduction of iron oxide in the selective reduction process of laterite nickel ore. FeS generated in the process plays an important role in selective reduction, but the generation process of FeS and its inhibition mechanism on iron reduction are not clear. To figure …

Nickel laterite HPAL circuits are known for their complexity and have presented a large number of challenges to process engineers worldwide. An attitude commonly encountered by the author is that the beneficiation of the ore is relatively simple and that the difficult problems are in the realms of hydrometallurgy. On a number of occasions beneficiation …

At present, limonitic laterite ores are primarily treated by high pressure acid leaching (HPAL) process, which has a relatively high recovery of nickel and cobalt.