Iridium | Minerals Education Coalition

Iridium is found in its pure native form and in osmiridium, a natural alloy of iridium and osmium. Iridium is mined from sulfide layers in mafic igneous rocks where it is present with other platinum-group elements. Most iridium is mined in Canada, Russia and South Africa.

Precious Metal Refining Company | Arch Enterprises

Arch Enterprises – Precious Metal Refiners. Arch Enterprises is one of the nation's leading precious metal refineries. Located in the heart of Missouri, we became incorporated in 1997 and provide recovery services for all scrap precious metal materials including gold, platinum, silver, palladium, rhodium, iridium, and ruthenium.

Application of solvent extraction to the refining of ...

Separation of the element from iridium, platinum, palladium and silver has been shown to be essentially complete. A scaled-up version of the procedure could be incorporated with advantage into the process for the commercial refining of rhodium.

Umicore - Precious Metals Refining

Umicore Precious Metals Refining operates as one of the world's largest precious metals recycling facilities. This business unit of Umicore is the world market leader in recycling complex waste streams containing precious and other non-ferrous metals.

Gold Refining

Mar 29, 2019· Further, if you did have that quantity of iridium, with 3% gold nonetheless, you'd be best off just contacting someone like Lou, who routinely handles the separation, and paying them handsomely to help you set up a refining process. Or just selling the concentrate outright.

iridium ore refine process -

iridium ore refine process - solutionsinfinityin. mining process for iridium - universitycourscoin Iridium Ore Refine Process Henan Mining Machinery Iridium is a chemical element with symbol Ir and atomic number 77 A very hard, brittle, silverywhite Contact Supplier. How to Refine and Melt Platinum - Tutorial part 1 - YouTube

Refining of Gold at the Rand Refinery - SAIMM

Refining of Gold at the Rand Refinery K.G. Fisher 10.1 Introduction Since 1921, all gold produced in South Africa has been refined at the Rand Refinery (Adamson, 1972). To give the reader a complete picture of gold refining in South Africa, the historical development and all operations of

Iridium - Element information, properties and uses ...

Iridium was discovered together with osmium in1803 by Smithson Tennant in London. When crude platinum was dissolved in dilute aqua regia, which is a mixture of nitric and hydrochloric acids, it left behind a black residue thought to be graphite.

Gold Smelting & Refining Process

Metallurgical ContentGold AlloysGold Melting PointsRetortingGold SmeltingGold Refinery SlagRefining GoldGold AssayFluxMelting GoldCupellationGold-Silver SeparationGold Refining Book Gold can be concentrated and recovered by applying different gold refining process methods and the final product has variable quality. In this way, it is necessary to have a better marketable product so that the ...

Iridium -

Iridium can take oxidation states between -3 and +9 so there are a lot of possible compounds that can be formed with iridium. Most commonly is +3 and +4 compounds. Some compounds : Hexachloroiridic acid, (H 2 IrCl 6) is a common iridium compound, used both in iridium refining and as a precursor to other iridium compounds.

Handbook of Petroleum Processing | SpringerLink

Major equipment used in the industry is reviewed along with details and examples of the process specifications for each. An extensive glossary and dictionary of the terms and expressions used in petroleum refining, plus appendices supplying data such as converging factors and selected crude oil assays, as well as an example of optimizing a ...

Refining - Iridium Project

Iridium is one of the rarest elements on the planet. It is only found as an impurity in Platinum. There are only 3 naturally-occurring elements rarer than Iridium. The most common way Iridium is obtained is during the electrorefining of Nickel. During this process, …

refining of platinum group metals / priciple flow sheet

refining of platinum group metals ore concentrate. pgm ore concentrate The figure below shows a typical assay of a South African platinum group metals ore concentrate obtained as the filter cake after sulfuric acid leach (according to the Sherrit process) of a Merensky reef converter matte.

JK Consulting & Refining, Inc.

JK Consulting & Refining's precious metal refining process and techniques reflect our dedication to providing customers with the highest returns possible. When you send a lot to JK Refining Inc. rest assured that you will be getting the highest return in the industry.

Process Technology - Colt Refining & Recycling

Process Technology. CRI has the knowledge, capability, and structure to handle all types of waste materials generated from electronics manufacturers. Our facility is designed to recycle materials containing Gold, Silver, Platinum, Palladium, Rhodium, Iridium, Copper, Aluminum, Tin, Lead, and Steel in an environmentally safe and cost-effective ...

Henan Mining Machinery and Equipment Manufacturer ...

Iridium Ore Refine Process Prompt : Caesar is a famous mining equipment manufacturer well-known both at home and abroad, major in producing stone crushing equipment, mineral separation equipment, limestone grinding equipment, etc.

Purification of Gold by Electrolysis

The Moebius Process of Purification of Gold by Electrolysis is now in successful operation and is said to be specially suitable for refining copper bullion containing large proportions of silver and gold with small quantities of lead, platinum, and other metals, but is chiefly used in parting dore silver containing not more than 20 per 1,000 of base metals.

Pgm refining | Johnson Matthey

Our refining process involves four key steps: Evaluation Evaluation is a critical stage. During this step we determine the pgm content of the material and agree with the customer on the pgm quantity or value we will return to them. At this stage we provide the lead time for refining.

Processing of Iridium and Iridium Alloys | Johnson Matthey ...

Iridium and its alloys have been considered to be difficult to fabricate due to their high melting temperatures, limited ductility, sensitivity to impurity content and particular chemical properties. The variety of processing methods used for iridium and its alloys are reviewed, including purification, melting, forming, joining and powder metallurgy techniques.

Refining – SAXONIA

The refining of precious metals creates considerable value. Trust is an essential condition for successful cooperation. SAXONIA therefore guarantees maximum transparency in the separation process, total accuracy in analysis and absolute care in the environment-friendly recovery of your precious metals.

Extraction and Refining of the Platinum Metals

and refining carried out in the smelting works and refineries of Johnson Matthey & Co Limited in order to bring the concentrates received from mining company into marketable forms. Operations conducted at the mine result in two products-a rich gravity concentrate which is passed directly to the wet process


POSSIBLE WAYS OF REFINING PRECIOUS GROUP METALS (PGM) OBTAINED FROM RECYCLING OF THE USED AUTO CATALYTIC CONVERTERS ... • iridium = 34 884 US$, • ruthenium = 4 180 US$ [1]. At present Pt, Pd and Rh are mostly used in the pro- ... (this process is necessary only if the amount of this element is high)

Precious Metal Refiners - AWA

As one of the leading precious metal refiners, we specialise in working with gold, silver, platinum, palladium, rhodium, iridium and ruthenium. Precious metals are chemically refined and melting operations are performed in house, enabling us to process all precious metals and their complex alloys.

About Us - Colt Refining & Recycling

Colt Refining & Recycling (Colt) has over 40 years experience, active ownership and a corporate philosophy dedicated to the fundamental values of integrity, quality, and client satisfaction. Our management has pledged to maintain the company's leadership in the precious metals recycling industry, while broadening the scope of services it offers to its clients worldwide.

US4406693A - Method for refining contaminated iridium ...

Contaminated iridium is refined by alloying it with an alloying agent selected from the group consisting of manganese and an alloy of manganese and copper, and then dissolving the alloying agent from the formed alloy to provide a purified iridium powder.


with Iridium (Ir), and Osmium (Os) found in much smaller quantities ... Major PGM miners are integrated from mining to refining and therefore maintain ... Anglo Converting Process (at Rustenburg) Our configuration differs from our competitors - we have a broad footprint across all 3 Bushveld limbs. Consequently, our integrated production system ...

US6596245B2 - Process for the recovery and refining of ...

The present invention relates to a process for the recovery and refining of rhodium starting from a mixture containing rhodium and other transition metals, including those of the platinum Group, as well as metals of the main Groups, said process comprising the following passages: a) formation of an adduct between rhodium trichloride and a halide of a metal selected from metals of Groups IIA ...