sulfide ores contact

PGE mineralization in marginal sulfide ores of the ...

We have undertaken a detailed study of platinum group element (PGE) mineralogy and geochemistry of disseminated sulfides associated with the marginal zone of the Chineisky layered mafic intrusion. Towards an intrusive contact the marginal zone reveals a gradual progression from gabbro-gabbronorites towards monzodiorite. Sulfides occur in all the rocks of the marginal zone including …

Sulfide Ore Processing « TCB Metals and Refining

Instead of relying on autoclaves or roasting to prepare a sulfide ore for traditional leaching, 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 ...

Sulfide Ores - Clariant

Sulfide Ores Optimize your recovery and improve grade with specialized collectors and frothers ... Contact Let our expert teams help you find the best solutions for your ongoing mining needs. Contact us today to learn more. Kari Harper. Contact Person ごください ...

Sulfide Mining | Minnesota Center for Environmental Advocacy

Sulfide-ore mining for copper and nickel, however, has never been attempted here. In the case of PolyMet, MCEA has led the fight for accountability and true science-based decision-making. MCEA lawyers and experts have time and again cast light on the flaws inherent in the PolyMet proposal, first in the environmental review and permitting ...

Copper Ore Types: Sulfides vs. Oxides | An Investor's ...

Copper sulfide ores are typically the most profitable copper ore type to mine. That is because they have high copper content, and the copper in …

The Mineral Gallery - Sulfides Class

The Sulfide Class minerals comprise an economically important class of minerals. Most major ores of important metals such as copper, lead and silver are sulfides. Strong generalities exist in this class. The majority of sulfides are metallic, opaque, generally sectile, soft to average in hardness and they have high densities, black or dark-colored streaks, and an igneous origin.

Sulfide Mining and Human Health - Save the Boundary …

the sulfide mineral ore and wastes come into contact with air and water, chemical reactions occur that result in seepage of sulfuric acid, sulfate and toxic metals into surface and ground water. The general concept is as follows: Metal sulfide + air + water → Mobilized metal + salts + acid (including sulfuric acid) An example of the metal ...

Mining Industry | Copper Sulfide Ore and Flotation Process ...

1 Types of copper sulfide ore (1) Single copper mineral Its ore characteristic is relatively simple, and the only useful component that can be recycled is copper. The gangue minerals are mainly quartz, carbonate and silicate. (2) Copper-sulfur ore Called copper-bearing pyrite. In addition to copper minerals, iron sulfide can be recovered, and the main mineral of sulfur is pyrite.

Nonlinear Determination Method for Self-Heating Initiative ...

Under the circumstances, obvious self-heating phenomenon usually cannot appear in the sulfide ores. For example, when the average heating rate is 0.3°C·min −1, 0.5°C·min −1, 0.8°C·min −1, and 1.3°C·min −1 in this experiment, there are no crossing points on the measured self-heating curves of the two samples.

A fresh approach to sulfide ores - CIM

The traditional route for extracting copper from sulfide ores is smelting. Yet there is a growing case for leaching sulfides from lower grade ore bodies and especially for those ore bodies containing problematic elements like arsenic, which make smelting less economical. Smelting is increasingly expensive because, in general, smelters require a ...

Sulfide Minerals - ThoughtCo

Galena forms in low- and medium-temperature ore veins, along with other sulfide minerals, carbonate minerals, and quartz. These can be found in igneous or sedimentary rocks. It often contains silver as an impurity, and silver is an important byproduct of the lead industry.

THERMAL BEHAVIOR AND KINETICS OF SULFIDE …

When the sulfide ores are in contact with air, oxidation will occur and release lots of heat. The continuous accumulation of heat can accelerate the oxidizing reaction and cause the ore temperature reaching the auto-ignition point [1-3]. Sulfide concentrate is the term of

THE GOMPOSITION OF Ni.SULFIDE ORES, WITH PARTICULAR ...

sulfide-saturated conditions. with the resultant re-moval of sulfides as well as silicates prior to s,epiara-tion of the main ore. (2) Reaction of a fixed mass of sulfide with a variable mass of silicate map na. The ore of the Pipe deposit (Manitoba nickel belt), for instance, shows unusual metal values. While dis-

Sulfide Ores - an overview | ScienceDirect Topics

VMS ore-forming fluids are acidic, reduced, 1–3 M chloride solutions in which metals were transported mainly as chloride complexes (Table 3).Before the discovery of black smokers, temperatures of the ore fluids were estimated from rare fluid inclusion data and sulfur isotope fractionation between sulfide mineral pairs. pH values about 1 unit less than neutral (~5 at 250 °C) were determined ...

Sulphide Mineral Indicators For Gold – BC Gold Adventures

Sulfide minerals can provide important clues for small-scale gold miners and prospectors in locating both placer and lode deposits. This is especially true when it comes to lode or vein gold. The following are some of the main sulfide mineral indicators you should keep an eye out for when prospecting. Bear in mind, mineral indicators…

Mining and Extraction: Oxide Ores - processes for ...

Extraction of sulfide ores is covered in more detail in Copper Mining and Extraction: Sulfide Ores (11–14), but is introduced here because an important by-product of this process is used for the extraction of oxide ores. Pyroprocessing Sulfide Ores Provides Acid for Leaching. The process used to treat sulfide copper ores begins at the mine ...

Mineralogy of Sulfides - Elements

Sulfide ores in volcano-sedimentary sequences, such as those associated with ophiolite complexes (e.g. the Troodos Complex in Cyprus) are dominated by pyrite and chalcopyrite. Our understanding of the formation of such deposits has been revolutionized by the study of present-day volcanic and hydrothermal activity on the seafloor.

Treatment of Mixed Sulfide Oxide Ores of Copper

Treating manganese-containing ores with a metal sulfide ...

The metal sulfide component may be intermixed with the manganese-containing ore or brought in contact with the manganese-containing ore by the aqueous, acidic composition which is in turn intermixed with the manganese-containing ore. Metal sulfide components useful in this invention may include other minerals or compounds in amounts which do ...

List Sulphide Minerals - Mineral Processing & Metallurgy

Bismuthinite is an ore of the metal bismuth, but is found mostly in complex mixtures of ores of silver, cobalt, gold, etc., and the bismuth is extracted as a by-product, which sells at about $2.00 a pound. It is used in making easily fusible alloys (safety plugs), and in a number of medical and chemical substances. Molybdenite. MoS2.

MAGMATIC SULFIDE DEPOSITS (MODELS 1, 2b, 5a, 5b, 6a, 6b ...

Figure 1. A, Schematic section of a magmatic sulfide deposit showing the vertical gradation downward from disseminated to massive ore.B, Generalized map showing massive sulfide mineral concentrations in footwall embayments of the Sudbury Complex (Canada). sequences may be related to major lithologic features such as cyclic-unit boundaries, unconformities, chromite seams,

The number of sulphide ores which are reduced by self ...

The number of sulphide ores which are reduced by self redcution to produce their respective crude metals are: `ZnS,Cu_(2)S,PbS, FeS_(2), HgS`

9 Ore Deposits and Economic Minerals – Mineralogy

The quality of the ore in massive sulfide deposits is high, host rocks are generally greater than 60% ore minerals, so even if they are small, massive sulfide deposits are alluring mining prospects. The photo below in Figure 9.87 shows one of the main pits at the Rio Tinto Mine.

What is Sulfide Mining? | Mining Action Group

Contact; Upper Peninsula Environmental Coalition; What is Sulfide Mining? 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 ...

Magmatic Ore Deposits in Layered Intrusions—Descriptive ...

PGE-enriched sulfide mineralization is also found near the contacts or margins of layered mafic to ultramafic intrusions (Iljina and Lee, 2005). This contact-type mineralization consists of disseminated to massive concentrations of iron-copper-nickel-PGE-enriched sulfide mineral concentrations in zones that can be tens to hundreds of meters thick.

Enhanced "contact mechanism" for interaction of ...

In order to enhance the "contact mechanism" governing the interaction of extracellular polymeric substances (EPS) with low-grade copper-bearing sulfide ore for the bioleaching of copper, moderately thermophilic Acidithiobacillus caldus was subjected to exogenous intervention with iron and sulfur.The enhancement of the contact mechanism was systematically investigated by evaluating the ...

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 …

Flotation Behavior of Complex Sulfide Ores in the Presence ...

Flotation Behavior of Complex Sulfide Ores in the Presence of Biodegradable Polymeric Depressants. Muhammad Badar Hayat,1,2 Lana Alagha,1 and Syed Mohammad Sannan3. 1Department of Mining and Nuclear Engineering, Missouri University of Science and Technology, Rolla, MO 65401, USA. 2Mining Engineering Department, University of Engineering and ...