The main process steps in the Caron process are reduction roasting, atmospheric ammonia leaching, ammonia recovery, and NiO sintering. ... When this procedure was applied to treat Qinghai Yuanshishan nickel ore, an experimental study revealed that the extraction ratios of Ni and Co are 90.11% and 62.99%, respectively …

Recent Progress in Hydrometallurgical Processing of Nickel Lateritic Ore. Review. Published: 22 August 2022. Volume 76, pages 11–30, ( 2023 ) Cite this …

DOI: 10.1016/j.jmrt.2021.11.052 Corpus ID: 244437487; Effect of modified basicity in selective reduction process of limonitic nickel ore @article{Nurjaman2021EffectOM, title={Effect of modified basicity in selective reduction process of limonitic nickel ore}, author={Fajar Nurjaman and Anton Sapto Handoko and Fathan Bahfie and Widi Astuti …

A novel method of high-grade ferronickel production was developed using self-reduction and selective oxidation. • Oxidation by CO 2 at a concentration of 70 vol% allowed for a nickel recovery >95% and grade of ~32 wt%.. Metallic nickel and iron were separated by selective oxidation with CO 2, and CO 2 was efficiently utilised.

By setting the amount of added laterite nickel ore, reduction temperature, reduction time and FC/O ratio as independent variables, the interaction among the metals Fe, Cr and Ni recovery is clarified, the model predicting Fe, Cr and Ni recovery is established, and the best reduction preparation process parameters to achieve high …

The selective reduction smelting process of laterite nickel ore consists primarily of the melting of the reduced lump, separation of the molten slag from the metal melt, and chemical reaction at the liquid–liquid interface. During the smelting process, the soft melting of the burden drops and accumulates in the lower part of the furnace cylinder.

The effect of binary basicity with MgO/SiO 2 ratio (B B) on the selective reduction of limonitic nickel ore has been investigated clearly in this section. The binary basicity value of limonitic nickel ore was modified by MgO and SiO 2 addition from 0.1 to 1.0. The binary basicity (MgO/SiO 2) of nickel ore is 0.14.

A new process of extracting silica from laterite nickel ore by hydrothermal treatment with sodium hydroxide as reaction auxiliary agent was proposed. The mineralogical transformation and silicon extraction kinetics of laterite nickel ore in alkaline hydrothermal treatment were studied. The effects of reaction temperature (175 ~ 250℃), …

The RKEF process was first applied commercially to treat New Caledonian ore in the late 19th century [3]. In general, the literature establishes three stages in the RKEF process [1], [4], [10], [11] : I) drying or preheating in a rotary dryer, II) calcination and partial reduction in a rotary kiln, and III) smelting in an electric arc furnace.

The novel method is done via direct reduction and magnetic separation. In laterite nickel processing by direct reduction, the challenges are to conduct selective reduction of …

export of metal ores which included laterite nickel ore was prohibited from 2014. Therefore, this article mainly aimes to prepare ferronickel from low grade laterite nickel ore from Philippines by coal-based self-reduction process, which provides guidance for rational exploiting and utilizing of the low grade laterite nickel ore. 2.

Low-grade saprolite nickel laterite, characterized by complicated minerals composition and fine-grained and complex dissemination, was commonly treated with a low recovery efficiency of Ni and Fe by conventional methods. Hence, an improved direct reduction and magnetic separation process was proposed. Meanwhile, the …

1. Turn on MathJax. Share this article. Article information. Abstract. A low-grade nickel laterite ore from Indonesia was selected to investigate the effect of …

Nickel is widely used in industrial processes and plays a crucial role in many applications. However, most of the nickel resource mainly exists as nickel oxide in laterite nickel ore with complex composition, resulting in difficulty in upgrading the nickel content using physical separation methods. In this study, high-grade ferronickel concentrates …

The production of ferronickel concentrate from low-grade nickel laterite ore containing 1.31% nickel (Ni) was studied by the non-melting reduction magnetic separation process. The sodium chloride was used as additive and coal as a reductant. The effects of roasting temperature, roasting duration, reductant dosage, additive dosage, and grinding …

The performance and kinetic of saprolitic laterite reduction using palm kernel shell charcoal and anthracite were studied. The anthracite coal represents the conventional high-grade carbon content matter, and palm kernel shell charcoal represents biomass-based reductant. The experiment was conducted at a temperature ranging from 800oC …

The sulfating roasting process of nickel sulfide ore is essentially a process of selective oxidation of metals in minerals. In this process, air or oxygen-enriched air is generally used as oxidant, and a multiphase reaction takes place between solid phase and gas phase. ... Bioleaching uses the oxidation or reduction of microorganisms to soak ...

DOI: 10.1007/978-3-030-65647-8_27 Corpus ID: 234244780; Carbothermic Reduction Roasting of a Low-Grade Nickel Laterite Ore in the Modified Caron Process @inproceedings{Ilyas2021CarbothermicRR, title={Carbothermic Reduction Roasting of a Low-Grade Nickel Laterite Ore in the Modified Caron Process}, author={Sadia Ilyas and …

Based on a brief introduction of properties of metallic nickel, it summarizes the applications of nickel, demand of nickel, resources of nickel, and metallurgical …

Published: 18 June 2020. Efficient Synchronous Extraction of Nickel, Copper, and Cobalt from Low–Nickel Matte by Sulfation Roasting‒Water Leaching Process. Qiangchao Sun, Hongwei...

Abstract. The reduction of nickel from low-grade nickel laterite ore using a solid-state deoxidisation method was studied. The effects of temperature, time, reductant …

A high nickel grade ferronickel was produced from laterite ore using the selective reduction-wet magnetic separation process, with the addition of sodium sulfate (Na 2 SO 4).The ferronickel concentrate assaying 9.87% Ni, with a nickel recovery of 90.90% can be obtained, when laterite ore was reduced at 1200 °C for 50 min with the …

Reduction–sulfurization smelting is an effective method for treating solid hazardous waste and recovering valuable components from them. In this work, a waste hydrogenation catalyst (WHC), an automotive exhaust purifier waste catalyst (AEPWC), a vulcanizer, and laterite nickel ore were mixed, and the reduction smelting behavior of …

The carbothermic reduction roasting followed by ammoniacal leaching of a Ni-laterite ore from Bajaur (Pakistan) has been studied first time for its potential exploitation via the Caron process.

A coal-based direct reduction process was used to recover the ferronickel from low-grade nickel laterite ore. The effects of basicity on the compressive strength, …

2.4. Reduction process and magnetic separation. The reduction of the prepared nickel laterite ore (PM or IM) with a combined mass of 1 kg was performed in a stirred fluidised-bed reactor, which is a laboratory constructed, cylindrical heat-resistant stainless steel reactor.In a typical reduction process, the effect of different parameters …

The RKEF process is a two-stage pyrometallurgical process that involves the calcination and the partial reduction of the saprolite ore in a rotary kiln, followed by high-temperature smelting in an electric arc furnace.26 The final product is a ferronickel alloy containing 20 wt.% to 40 wt.% nickel. It is uneconomic to process laterite ore with ...

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 … See more

The details of tungsten ore beneficiation and prior-reduction process have been thoroughly discussed by Habashi . WO 2.9, WO 2.72, ... Rashed AH, Rao YK (1996) Kinetics of reduction of nickel oxide with hydrogen gas in the 230–452°C range. Chem Eng Comm 156:1–30. Article Google Scholar Nakajima H, Shimizu S, Onuki K, Ikezoe Y, …

In the gas–solid reduction process, a longer reaction time favoured nickel reduction, and the conversion percentage decreased when a gaseous reductant was used at 850°C because of phase ...