Platinum Metals Magmatic Sulfide Ores | Science

Platinum-group elements (PGE) are mined predominantly from deposits that have formed by the segregation of molten iron-nickel-copper sulfides from silicate magmas. The absolute concentrations of PGE in sulfides from different deposits vary over a range of five orders of magnitude, whereas those of other chalcophile elements vary by factors of only 2 to 100.

EXTRACTING METALS FROM SULFIDE ORES - Investors Hub

Most sulfides are electrically conducting, generally semiconducting, and this allows electrochemical reactions to occur at the solid/solution interface In fact, electrochemical mechanisms play a key role in each of the processes that are involved in obtaining the component metals from their sulfide ores, namely, prospecting for ores (weathering ...

US5074910A - Process for recovering precious metals from ...

The present invention is a process to recover precious metals from sulfide ores. It involves chlorinating a mixture of an ore concentrate and salt to form a liquid melt. The salt preferably contains potassium chloride. This chlorination is carried out at a temperature between 300° and 600° C. while stirring. The process converts precious metals in the elemental and sulfide forms into ...

Mineralogy of Sulfides - Elements

Metal sulfides are the most important group of ore minerals. Here, we review what is known about their compositions, crystal structures, phase relations and parageneses. Much less is known about their surface chemistry, their biogeochemistry, or the formation and behaviour of 'nanoparticle' sulfides, whether formed abiotically or biogenically.

Heap Leaching Oxide and Sulfide Copper Ores

Ores used in this Study. Several different types of oxide and sulfide copper ores were tested in this study. Table 1 gives a description of these samples. Assaying of Samples. This study required that a large number of copper, ferrous and ferric iron, and free-acid analyses be made.

Ferrous sulfide - PubChem

A method is given for the removal of heavy metals from metal finishing wastewater by sulfide precipitation in which ferrous sulfide is used as the sulfide ion source. Ferrous sulfide works best as a freshly prepared slurry; it has a large reactive surface. Korchin SR; …

Copper Mining and Extraction: Sulfide Ores

The smelter for sulfide ores produces sulfur dioxide gas. This is scrubbed from the flue gases to make sulfuric acid for leaching copper from oxide ores. Scrubbing sulfur dioxide also protects the environment. For example: FeO(s) + SiO 2 (s)→ FeO.SiO 2 (slag) This is …

Sulfide Ore Processing « TCB Metals and Refining

Home → Sulfide Ore Processing . Processing Sulfide Ores. ... our vibratory grinder on our circuit allows our leach to make contact with the precious metal encapsulated in the sulfide so leaching can occur. With the aggressive nature of our leach allowing us to process most ores in an hour, our process allows us to contain the amount of sulfur ...

Nickel sulfide ore: Mineral information, data and localities.

Search Photos of Nickel sulfide ore Edit Add Synonym Add Sub-type (rock) Clear Cache Ores with economic nickel in sulphide minerals (most commonly pentlandite).

Nickel Deposits Explained | Balmoral Resources Ltd.

Typically this type of Disseminated Ore is seen above and lateral to the higher grade, more massive parts of the system. One of the characteristics of magmatic sulphides is that the individual sulphide grains – like the orebodies as a whole – tend to be zoned having a more copper-rich top and nickel rich base.

Recovery of Gold in Pyritic Sulfide Ores - mine-engineer.com

Recovery of gold in sulfide ores has fallen into several categories. First is froth flotation, and second is cyanidation of the ores. Using cyanide to recover gold from sulfide ores generally results in 30 to 35% recovery, and the best I have heard of is around 50% recovery.

Sulfide Ores - an overview | ScienceDirect Topics

Sulfide Ores. Sulphide ores were mostly created by (i) the intrusion of molten magma from the mantle into the crust of the earth and (ii) the formation of localized metal-rich sulphide ore bodies by sequential solidification and/or hydrothermal leaching and precipitation. From: Extractive Metallurgy of Nickel, Cobalt and Platinum Group Metals, 2011

Copper Ore Types: Sulfides versus Oxides - Nasdaq.com

Apr 23, 2011· Copper oxide ores. Copper oxide ores are not as attractive of an exploration target as the copper sulfide ore types due to their lower grade, however low-grade copper oxide deposits can be ...

Sulfide Ore - an overview | ScienceDirect Topics

Recovery of zinc from low-grade sulfide ores can be achieved by heap bioleaching, followed by solvent extraction and electrowinning. The process was tested in a 1-ton/day demonstration plant at Kimberley, BC (Canada). The ore was initially crushed to −12 mm, agglomerated, and stacked on a 6-m high heap.

Copper processing - Ores | Britannica.com

For sulfide ores, on the other hand, selective flotation normally follows the crushing and grinding stage and requires an optimal degree of liberation. In the flotation process, the finely ground ore, mixed with water and special reagents, is agitated by mechanical and pneumatic devices. These produce air bubbles in the ore-water mixture, or ...

The Threat of Sulfide Mining — Friends of the Boundary ...

Sulfide mining, which is sometimes referred to as hard-rock mining, is the process of extracting trace amounts of copper, nickel and other metals from sulfide ores. When sulfide ore comes into contact with water or oxygen, a chemical reaction occurs and produces sulfuric acid, …

Sulphide Ores - Corporate

Sulphide Ores Optimize your recovery and reagent consumption for sulfide ores with customized technical solutions. At Clariant Mining Solutions, we are proactive solution-seekers committed to optimizing your mineral processing operations through creative problem-solving.

Copper Extraction from Sulfide Ores - Latest Contents

HYDROMETALLURGY OF COPPER This process is used for the extraction of copper from low grade sulfide ore. In this process, the crushed and ground ore in bulk (about 100,000 tons) is exposed to air and water in big tanks.

What is Sulfide Mining? | Mining Action Group

Metallic sulfide mining (aka hard rock mining) is the practice of extracting metals such as nickel, gold and copper from a sulfide-rich ore body. Sulfides are a geologic byproduct of mining in this area, and by exposing sulfides to the air and water in our atmosphere, sulfuric acid can be created — threatening to poison the nearby water ...

Flotation of Silver Bearing Minerals from Sulfide Ores

Silver is an economically important component of many complex, massive sulfide ores, and often is produced as a byproduct during recovery of base metals from sulfide deposits. About two-thirds of the world's silver resources are contained in base-metal sulfide deposits (Reese, 1991). These ores are beneficiated almost exclusively by flotation.

EXTRACTING METALS FROM SULFIDE ORES - InvestorsHub

Most sulfides are electrically conducting, generally semiconducting, and this allows electrochemical reactions to occur at the solid/solution interface In fact, electrochemical mechanisms play a key role in each of the processes that are involved in obtaining the component metals from their sulfide ores, namely, prospecting for ores (weathering ...

The Extraction of Copper - Chemistry LibreTexts

Sulfide ores such as chalcopyrite ((CuFeS_2)) are converted to copper by a different method from silicate, carbonate or sulfate ores. Chalcopyrite (also known as copper pyrites) and similar sulfide ores are the commonest ores of copper. ... For more information contact us at [email protected] or check out our status page at https: ...

Processing of Nickel Laterite Ores on the Rise

Lateritic Nickel Ore Processing. While sulfide nickel ores are processed via upgrading to concentrates and then smelting, this approach is not applicable to laterite ores. A variety of approaches are available to process nickel laterite ores, with the most prevalent approaches explained below.

Flexicone technology for sulfide ores | flexicone

Contact. FLEXICONE processing technology of refractory ores and concentrates . For the processing of refractory gold-bearing refractory and sulfide ores, Flexicone has developed a unique enrichment technology. The technology includes the processes of ultrafine grinding and oxidation of sulphides, extraction of released gold and platinum group ...

THE GOMPOSITION OF Ni.SULFIDE ORES, WITH …

THE GOMPOSITION OF Ni.SULFIDE ORES, WITH PARTICULAR REFERENCE TO THEIR CONTENT OF PGE AND AU ] A.J. NALDRETT, E.L. HOFFMAN, A.H. GREEN, CHEN-LIN CHOU ENN S.R. NALDRETT ... chalcopyrite ore occurs in sharp contact with the basaltic footwall and is overlain by net-textured ore, overlain in turn by sulfides, weakly dis-

Magmatic Sulfide Ore Deposits | Request PDF

Sulfide ore deposits occupy a spectrum from accumulated pools of matte within small igneous intrusions or lava flows, mined primarily for Ni and Cu, to stratiform layers of weakly disseminated ...

Zinc processing - Ores | Britannica.com

Zinc processing - Zinc processing - Ores: Zinc ores are widely distributed throughout the world, although more than 40 percent of the world's output originates in North America and Australia. The common zinc-containing minerals are the zinc sulfide known as zinc blende or sphalerite (ZnS), a ferrous form of zinc blende known as marmatite [(ZnFe)S], and a zinc carbonate known as calamine or ...

Mining - Minnesota Center for Environmental Advocacy

MCEA is a member of the Mining Truth coalition, which includes Friends of the Boundary Waters Wilderness and Conservation Minnesota. Sulfide mining in Minnesota would affect many of our treasured places, including Lake Superior and the Boundary Waters. It's too …

Sulfide minerals - Wikipedia

The sulfide minerals are a class of minerals containing sulfide (S 2−) or persulfide (S 2 2−) as the major anion. Some sulfide minerals are economically important as metal ores. The sulfide class also includes the selenides, the tellurides, the arsenides, the antimonides, …

Sulfide - Wikipedia

Sulfide (British English also sulphide) is an inorganic anion of sulfur with the chemical formula S 2− or a compound containing one or more S 2− ions. Solutions of sulfide salts are corrosive. Sulfide also refers to chemical compounds large families of inorganic and organic compounds, e.g. lead sulfide and dimethyl sulfide.