Platinum - Download as a PDF or view online for free. 3. The South American Indians also made use of platinum to decorate their artifacts. With the Spanish conquest of South America, the metal's value was diminished, as the Spanish people considered it to be far inferior to silver. It wasn't until the 1800s that platinum began to reclaim its original …

Russia and South Africa are the world's leading producers of platinum group elements (PGEs). This places them in a unique position regarding the supply of these two key industrial commodities. The purpose of this paper is to provide a comparative high-level overview of aspects of the geological occurrence, mineralogy, and processing by …

Extraction of Platinum Group Metals. Authors: B.M. Thethwayo. University of Pretoria. Discover the world's research. Available via license: CC BY 3.0. Content may …

SCF extraction combines the functions and features of solvent extraction and distillation, that is, the solubility and vapor pressure can undergo controlled for chemical separation. The SCF extraction of PGMs from secondary resources mainly involves the formation of complex anions in the interface of two phases, anion exchange and the …

Extraction and separation of platinum group metals (PGMs) from secondary raw materials are usually carried out via hydrometallurgical processes. These processes use strongly oxidizing acidic solutions, such …

To extract the platinum group metals from ore, and to refine them to the very high purity required for their many applications, requires a multitude of complex operations. At …

Precious Metals: Platinum Group Metals (PGM), Gold, Silver. Direct Lithium to Product™ (DLP™) Catalytic Converter Recycling. Copper Purification: Bismuth, Antimony. Battery Metals: Lithium, Cobalt, Nickel. Rare Earth Elements (REE) Technology and Base Metals. Environmental Remediation, Recycling and Toxic Metals.

Platinum - Exploration and Extraction. Platinum (Pt), a very rare substance, is very less abundant than gold. It exists in very few commercially viable deposits on earth. Most of the platinum mining is …

These materials are usually processed by pyro/hydrometallurgical processes consisting of thermal treatment followed by leaching, precipitation or solvent extraction. This paper reviews platinum leaching from such resources using acidic and alkaline solutions in the presence of oxidizing agents, such as nitric acid and hydrogen peroxide, sodium ...

(IV) Platinum Extraction Step An octylamine-based extraction solvent is brought into contact with the nitric acid solution after the extraction of palladium and copper to back-extract platinum. As an octylamine-based solvent, ctylamine is preferable because it has a high extraction ability for platinum and can be back-extracted to some ...

This paper systematically reviews various improvements and new technologies for the separation and purification of PGMs, including solvent extraction, membranes …

Extraction and separation of platinum, palladium and rhodium using Cyanex 923 and their recovery from real samples. Hydrometallurgy, 134–135 (2013), pp. 11-18. View PDF View article View in Scopus Google Scholar. Hagelüken, 2007. C. Hagelüken. Closing the loop — recycling of automotive catalysts.

A new technique for extraction of platinum group metals by pressure cyanidation. Hydrometallurgy (2006) T.D. Chi et al. Bioleaching of gold and copper from waste mobile phone PCBs by using a cyanogenic bacterium. Miner. Eng. (2011) Y. Chisti Sonobioreactors: using ultrasound for enhanced microbial productivity.

The strategic importance of platinum and palladium, two platinum-group metals (PGMs), is particularly supported by their technological applications, one of the most relevant being the role they perform as catalysts for several sorts of chemical reactions. The cumulative demand for these two PGMs to be used as catalysts more than justifies …

From GT New Horizons. This is a stylized diagram showing the relation of the different sections of the overall Platinum Processing Line. The Platinum Processing Line (henceforth just Platline) is the series of …

Bruckard et al. investigated the extraction of platinum, palladium, and gold by direct cyanide leaching of Coronation Hill PGM ore. This particular ore could not be upgraded by conventional metallurgical techniques such as flotation because it was composed of fine-grained PGE minerals and had low-sulfide mineral content. After the …

Platinum (Pt) is the primary platinum group metal that still suffers from the lack of a viable modern separation process applicable to its purification. A number of …

As Platinum is so incredibly rare it can take about as much as 10 tonnes of ore to find one ounce of Platinum. There are several steps in the mining process of Platinum, the first one being extraction of the Platinum ore and bringing it above ground, there are two ways of doing this the first and older way is to blast the ore free with explosives.

Recovery of PGMs (especially rhodium, platinum, and palladium) from different spent manufactured products (like catalytic converters) is considered as an important task as they are rarely found in nature, and they possess high economic value. In this work, the honeycomb of a car catalytic converter was primarily processed by crushing, grinding, …

Under these conditions, the extraction of Pd(II) is negligible, i.e., < 0.5%. Thus, extractant 1 shows very high Pd(II) extraction ability, whereas that of 2 is negligible. From these results, it ...

About 80% of the worlds' reserves for platinum group metals (PGMs) are in South Africa's Bushveld Igneous Complex. Processing of PGM involves comminution, flotation, smelting, converting, base metals refinery and precious metals refinery. Due to increasing chrome content in the feed and the challenges associated with operating high …

Abstract Separation of palladium (Pd) and platinum (Pt) by solvent extraction is difficult because of their extremely similar physicochemical properties. Development of new extractants with a high extraction efficiency and excellent separation selectivity is the primary focus for enhancing the separation of Pd and Pt by solvent …

The Extraction Process. The process of extracting platinum from catalytic converters involves the following steps: Dismantle the catalytic converter: Begin by removing the catalytic converter from the vehicle and then use a hammer or mallet to break open the casing. Extract the honeycomb material: Use a chisel to carefully remove the honeycomb ...

Three-liquid-phase extraction and one-step separation of platinum, palladium, and rhodium in the system composed of diisoamyl sulphide (S201), polyethylene oxide-polypropylene oxide random block copolymer (EOPO), Na 2 SO 4, and H 2 O were investigated. Experimental results indicated that phase-forming salt type, salt concentrations, …

The complete process of extraction consists essentially of enriching this matte to approximately 65 per cent content of platinum metals and then treating this concentrate with acids to separate the individual platinum group metals from each other, followed by …

Dissolved palladium (Pd), platinum (Pt), and gold (Au) form inert chloride complexes at low concentrations of pmol/kg in environmental water, thus rendering difficulty in the development of a precise analytical method for these metals. Herein, we report the preconcentration of Pd, Pt, and Au with a chelating fiber Vonnel-en and a chelating resin …

According to the researchers, test results show that effective elution of platinum- and palladium-cyanide with the AARL method is feasible. (Page 1) The …

The recovery of precious metals has opened new opportunities for future research, and Pt, Pd, and Rh are being recovered from the used autocatalytic converters by applying pyrometallurgical and hydrometallurgical methods such as chemical precipitation, chemical dissolution, liquid-liquid extraction, ion exchange, and electrolytic processes for ...

Extraction . Platinum metal extraction processes are typically trade secrets. First, the sample is dissolved in acid. Aqua regia is most often used for this purpose. This produces a solution of metal …

Platinum is one of the rarest and most useful metals on the planet. A new video from Cody's Lab explains why a significant amount of this precious element exists in the dirt and dust by the ...