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Leaching platinumgroup metals in a sulfuric acid/chloride ...

Leaching platinumgroup metals in a sulfuric acid/chloride solution Article in JOM: the journal of the Minerals, Metals Materials Society 55(4):3740 · April 2003 with 405 Reads DOI: ...

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Palladium | History, Uses, Facts, Physical Chemical ...

Palladium was discovered in 1802 and is member of the platinum group. It is widely used as a catalytic converter in automobile fuel industry. ... Palladium chloride dissolves in a mixture of nitric acid and acetic acid to form palladium acetate. Significance and Uses. A large amount of palladium is used in the catalytic conversion of harmful ...

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Sciencemadness Discussion Board Dissolved in nitric acid ...

Most platinum group metals aren''t oxidized by nitric acid either. The non gold part of gold alloys would dissolve in nitric acid (unless the other metal(s) is/are of the platinum group). But the gold would not to any appreacle extent. The way to dissolve gold is Aqua Regia.

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Platinum | Sciencemadness Wiki | FANDOM powered by Wikia

Platinum is a chemical element with the chemical symbol Pt. It is a transitional metal, part of the so called "platinumgroup metal". Platinum is extremely resistant to organic and mineral acids. It will however dissolve in hot aqua regia, to give chloroplatinic acid.

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Platinum group : definition of Platinum group and synonyms ...

The platinum group metals (abbreviated as the PGMs; alternatively, the platinoids, platidises, platinum group, platinum metals or platinum group elements (PGEs)) is a term used sometimes to collectively refer to six metallic elements clustered together in the periodic table.

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Gold and Platinum Refining Recovery Systems / Equipment

Dissolve them in ammonia and add a selective precipitant for platinum group metals. Each platinum group metal will precipitant in a different time frame, with about 1/2 hour between the conclusion of each precipitation from the start of the next.

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RECYCLING OF PLATINUM GROUP METALS FROM …

RECYCLING OF PLATINUM GROUP METALS FROM AUTOMOTIVE CATALYSTS BY AN ACIDIC LEACHING PROCESS ... the demand for platinum group metals (PGMs), particularly platinum, will grow continuously. Taking into account that one ... dissolve specific fractions. The most common technique is the leaching of the individual PGMs.

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Platinum Facts Science for Kids

A group of six elements including platinum in the periodic table is called the ‘platinum group’. Characteristics: Platinum is the least reactive metal and is highly corrosion resistant. It is shiny and silvery white in color. ... It does not dissolve it Hydrochloric acid and Nitric acid but dissolves in Aqua Regia. Platinum’s excellent ...

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Platinum Group Metals | Article about Platinum Group ...

Platinum group metals accumulate almost entirely in crude nickel; silver and gold, in crude copper. Upon subsequent electrolytic refining, silver, gold, and platinum group metals precipitate to the bottom of the electrolyte bath in the form of a slurry, which is then refined. Use. Platinum is the most widely used of the platinum group metals.

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Platinum

Platinum is a silvery metallic chemical element, a member of the six transition elements in Group VIII of the periodic table known collectively as the platinum metals (ruthenium, rhodium, palladium, osmium, iridium, and platinum).

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About Platinum Gold and silver mines

This dissolves all platinumgroup metals, which are subsequently separated by solvent extraction. The individual metal solutions are then treated by conventional techniques to …

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Why is platinum so inert if it has 1 valence electron? Quora

Platinum is chemically inert and will not oxidize in air at any temperature. It is resistant to acids and is not attacked by any single mineral acid but dissolves readily in aqua regia. In keeping with the other members of the platinum group, the metal shows a fairly strong tendency to form complex ions.

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Dissolving Gold and Precipitating Gold Pyrometallurgy ...

The ore I''m processing with HCI is just packed with platinum group metals and turns either a bright yellow or carat orange. When I precipitate with SMB THE solution fizzez yellow bubbles and the precipitate is orange as orange can be and sponges. When I precipitate with sodium hydroxide it turns dark brown or light brown with black specs in it.

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Palladium Refining Tutorial goldnscrap 2015

Palladium Refining Tutorial Part 1. Details Written by GoldNScrap ... refining can be a daunting task, similar to the other Platinum group metals (PGM''s) refining process. This is mainly due to their similar (but different) physical and chemical properties. ... Simply dissolve Ammonium Chloride salt in water until no more salt will dissolve.

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Aqua regia Wikipedia

Aqua regia dissolves gold, though neither constituent acid will do so alone, because, ... Experimental evidence reveals that the reaction of platinum with aqua regia is considerably more complex. ... when platinum group metals are purified through dissolution in aqua regia, gold ...

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Platinum |

Platinum dissolves in aqua regia, and other platinum metals do not. Platinum metal can then be removed from the aqua regia in a form known as platinum sponge. Platinum sponge is a spongelike material of black platinum powder.

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Palladium (Chemistry) Encyclopedia

Palladium (Chemistry) Encyclopedia GEOGRAPHICAL NAMES PALLADIUM [[[symbol]] Pd, atomic weight (0=16)], in chemistry, a metallic element associated with the platinum group.

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Characterizing and recovering the platinum group minerals ...

Methods of characterizing and recovering the platinum group minerals are reviewed in this paper. First, a classification of platinum group minerals (PGMs) ore types is briefly introduced, followed by the introduction of some representative platinum group minerals.

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Platinum group | chemical element group |

This dissolves all platinumgroup metals, which are subsequently separated by solvent extraction. The individual metal solutions are then treated by conventional techniques to …

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Platinum Wikipedia

Platinum is a member of the platinum group of elements and group 10 of the periodic table of elements. It has six naturally occurring isotopes . It is one of the rarer elements in Earth''s crust , with an average abundance of approximately 5 μg /kg.

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Nitric Acid Reacting with Group 11 Metals YouTube

May 10, 2010· This video details the reactions of nitric acid with the three group 11, or coinage, metals: copper, silver, and gold. ... How To Properly Dissolve Gold With Aqua Regia mixing vs incremental ...

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How to dissolve Pure Platinum other than Aqua regia ...

May 05, 2006· How to dissolve Pure Platinum other than Aqua regia? ... 5/2/06 2:57 AM: Hello, Does anyone know how to dissolve the pure platinum except of using Aqua regia? Because while i was using the aqua regia to dissolve the 99% Pt, i found that the reaction is slow and it cant be dissolved ... How to dissolve Pure Platinum other than Aqua regia?

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