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ALTA MetBytes - Developments in Hydromet Processing of ...

The process has been developed and patented by Promeca Consulting and Norilsk Nickel in Finland for the recovery of nickel and cobalt from limonite, saprolite and mixed ores. It is a two-stage countercurrent atmospheric leach process using sulphur dioxide and concentrated sulphuric acid. The first step involves a

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METHOD FOR RECOVERING SCANDIUM - SUMITOMO METAL …

1. A method for recovering scandium, comprising: the leaching step of obtaining a leachate and leach residue by solid-liquid separation under high temperature and high pressure after charging a nickel oxide ore containing scandium, aluminum and chromium into a pressure vessel with sulfuric acid, the neutralization step of obtaining neutralized sediment and a post-neutralization solution by ...

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Recovery of cadmium and nickel from scrap batteries ...

Abstract. A cyclic leaching process was developed for selectively leaching and recovering cadmium from nickel--cadmium scrap battery waste. The six major steps in the process are the following: washing the plates to remove KOH electrolyte: roasting at 550 to 600C to oxidize metallic cadmium and decompose cadmium and nickel salts; leaching with an ammonium nitrate solution; precipitation of the ...

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Concentration and Separation of Scandium from Ni Laterite ...

The presence of a considerable amount of scandium in lateritic nickel-cobalt ores necessitates the investigation of possible processing alternatives to recover scandium as a byproduct during nickel and cobalt production. Therefore, in this study, rather than interfering with the main nickel-cobalt production circuit, the precipitation-separation behavior of scandium during a pH-controlled ...

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Terence Makanyire - Lead Process Development Engineer ...

- Developed innovative, energy efficient, zero waste to landfill processes for recovery of vanadium, scandium and niobium from chloride and sulphate TiO2 wastes - two patents as inventor (pending) - Developed a novel process for recovery of nickel and vanadium from petcoke cinder for one of the biggest vanadium producers in the world.

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An innovative process for extracting scandium from ...

A two-stage process was developed to recover scandium from laterite ore. ... Laterite ore contains iron, aluminum, magnesium, manganese, nickel, cobalt, and in some cases scandium. One main characteristic of laterites is the correlation between nickel and ferrous iron, which is also observed between scandium and ferrous iron.

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AU2014263634B2 - Method for recovering scandium - Google ...

The present invention effectively recovers high-grade scandium from nickel oxide ores. The present invention includes a leaching step (S1) for charging nickel oxide ores and sulfuric acid into a pressurized container to cause solid-liquid separation of a leachate and a leaching residue under high temperature and high pressure, a neutralizing step (S2) for adding a neutralizing agent to the ...

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Method for recovering scandium - SUMITOMO METAL MINING …

In the method for recovering scandium according to the first embodiment, the post-sulfuration liquid obtained through each step of the hydrometallurgy treatment step S1 of nickel oxide ore can be used as an acidic solution containing scandium to be a target for the process for recovering scandium. <2-2. Scandium (Sc) Elution Step>

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An innovative process for extracting scandium from ...

A two-stage process was developed to recover scandium from laterite ore. • Scandium was concentrated in a slag phase using carbothermic reduction process. • Scandium was then leached using NaOH cracking process. • Statistical analyses were used to …

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METHOD FOR RECOVERING SCANDIUM FROM INTERMEDIATE PRODUCTS ...

The present invention discloses a scandium recovery process in which the feed material is a precipitate (an intermediate product), formed when the acidic PLS (pregnant leach solution), produced during the acid leaching processes for nickel/cobalt recovery, is partially neutralized (PN) and the major impurities, such as iron, aluminum and silica ...

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Metallurgical processes for scandium recovery from various ...

The industrialised plants for scandium recovery from nickel laterites are under development by several mining companies and are expected to produce scandium oxides in large amount. For example, a hydrometallurgy plant is designed to produce 28,000 kg of Sc 2 O 3 per year from the Nyngan project (Anon, 2010b).

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Why Scandium Solvent Extraction Is Better Than Traditional ...

This strip solution was then evaporated to dryness to recover the scandium as a 1-10% scandium concentrate. A recent by Turkish researchers details process development for recovery of scandium from Ni-Co HPAL leach solutions. As is normal practice, residual iron is removed from the PLS by addition of lime or other neutralising agents.

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Extraction of Scandium from Lateritic Nickel-Cobalt Ore ...

At the present time, the extraction of scandium from titanium, tungsten, uranium residues, red mud and phosphogypsum by IX have been made. The objective of this study is determining the extraction possibility of scandium from the leach solution of lateritic nickel-cobalt ore by ion exchange chromatography using various resins.

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[PDF] Production of scandium and Al–Sc alloy by ...

Abstract A fundamental study was conducted on a new process for producing scandium (Sc) metal or aluminium–scandium (Al–Sc) alloy by the calciothermic reduction of scandium oxide (Sc2O3). In this study, aluminium (Al) and calcium chloride (CaCl2) were used as the collector metal and flux for the reduction respectively. A mixture of Sc2O3, Al and CaCl2 in a tantalum crucible was placed ...

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HYDROMETALLURGICAL EXTRACTION OF SCANDIUM FROM …

up to now, there is a great potential to recover scandium as a by-product from the hydrometallurgical extraction route of lateritic (oxide) nickel-cobalt ores. In a previous work, the high pressure sulphuric acid leaching behaviour of a typical lateritic ore containing 106 g/t scandium …

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WO/2014/181721 METHOD FOR RECOVERING SCANDIUM

METHOD FOR RECOVERING SCANDIUM Abstract The present invention effectively recovers high-grade scandium from nickel oxide ores. The present invention includes a leaching step (S1) for charging nickel oxide ores and sulfuric acid into a pressurized container to cause solid-liquid separation of a leachate and a leaching residue under high ...

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Scandium Extraction from Nickel Processing Waste Using ...

Scandium is a rare-earth element. Although it is as abundant in the Earth's crust as lead, it is rarely concentrated. Therefore, it is obtained as a byproduct when mining other metals or from scrap processing of end-of-life products.1,2,3,4,5,6 Scandium is usually recovered using hydrometallurgical processes that include leaching, precipitation, and solvent extraction.7,8 The recovery ...

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Simpler, more selective scandium recovery - Chemical ...

Rare-earth elements (REEs), such as scandium, are in high demand, but it is often difficult to economically recover and extract them. Now, II-VI Inc. (Saxonburg, Pa.; ) has developed a patent-pending process utilizing selective ion recovery (SIR) that enables highly selective extraction of scandium and other targeted REEs from streams with concentrations as low as 6 ppm.

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Electric Metals Limited - Process

Process Engineered for Profit AND Proper Environment Rehabilitation. Our technology, the N5X, is a hydrometallurgical process engineered for the recovery of nickel, cobalt, scandium and other valuable metals derived from most of the laterite ore types, such as limonite, saprolite and bedrock. It employs THREE (3) essential steps to achieve the ...

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March 11, 2013 PHILIPPINE STOCK EXCHANGE INC. 3F ...

SMM to Construct Scandium Recovery Pilot Plant Sumitomo Metal Mining Co., Ltd. (SMM) has decided to construct a scandium recovery pilot plant at Coral Bay Nickel Corporation (CBNC), its majority owned subsidiary located on Palawan Island in the Philippines. Scandium (Sc) is a rare earth element discovered in 1879. A silvery-white metal with a

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Selective Recovery of Scandium from Nickel Laterite Ore by ...

Scandium is a rare and expensive metal that is in increasing demand because of its unique properties. Laterite ore is known to contain scandium in appreciable amounts. In this study, a two-stage process called "acid roasting–water leaching" was developed to extract scandium from laterite ore with minimal co-extraction of iron.

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A Process Flowsheet for the Extraction of Scandium from ...

Scandium is extracted from whole ore hydrochloric acid leach solutions through solvent extraction, and is further refined through a re-leach and precipitation process. Scandium leach residues are treated with sulphuric acid to recover separate niobium and titanium precipitates.

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Development of a New Combined Process for Nickel and ...

Abstract The studies on the development of a new process for nickel and cobalt recovery from ferriferous laterite ores via a reducing roasting–sulfuric acid leaching are carried out. The conditions for the reducing roasting of the ores in the temperature range from 400 to 950°C and for the sulfuric acid leaching of the cinder (after cooling without air and passivation in water) at pH 1.4 ...

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scandium ore grinding

A process for recovering scandium economically with high efficiency by concentration and separation from an oxide ore containing nickel and a small amount of scandium as well as a large amount of iron and/or aluminum comprises the steps of acid leaching the oxide ore under a high-temperature, high-pressure oxidative atmosphere while restraining ...

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Recovery of Scandium from Lateritic Nickel Ores Ece ...

Recovery of Scandium from Lateritic Nickel Ores Ece Ferizoğlu¹,², Şerif Kaya¹, Yavuz Topkaya² ¹Middle East Technical University, ²Meta Nikel Kobalt A.Ş. - Türkiye Abstract The aim of this study was to extract and recover scandium from a lateritic Ni-Co ore by means of hydrometallurgical techniques.

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(PDF) Extraction of Scandium from Lateritic Nickel-Cobalt ...

This includes scandium byproduct recovery from Meta Nikel's nickel laterite operations and the Coral Bay nickel laterite processing plant. ... A process for recovering scandium from impure ...

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Establishment of Scandium Recovery Business

commercial-scale scandium recovery from the nickel and cobalt mixed sulfides manufacturing process. The successful test result has lead SMM decide to to construct a plant for the recovery of an intermediate product for scandium oxide at its subsidiary Taganito HPAL Nickel Corporation (THPAL, Mindanao Island, the Philippines).

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Selective Recovery of Scandium from Nickel Laterite Ore by ...

Experimental results here can give some new insights into the mechanism of selective recovery of scandium and sodium from high alkali Bayer red mud (RM) through sulfation-roasting-leaching process.

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Solvent extraction behaviour of scandium from lateritic ...

In this study, scandium is extracted and recovered as a by-product from the hydrometallurgical extraction processing of lateritic nickel-cobalt ores. Some lateritic type nickel cobalt ores are processed by using MHP (Mixed Hydroxide Precipitation) method in order to recover nickel and cobalt as hydroxide intermediate product.

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Scandium recovery method - SUMITOMO METAL MINING CO., …

The invention claimed is: 1. A method of recovering scandium, the method comprising: a leaching step of introducing nickel oxide ore containing scandium, aluminum and chromium into a pressure vessel along with sulfuric acid to perform solid-liquid separation into a leachate and a leach residue under high temperature and high pressure; a neutralization step of adding a neutralizing agent to the ...

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