Magmatic Sulfide Ore Deposits | Request PDF
Sulfide ore deposits formed directly from magmatic sources, ... Graybody materials exhibit systematically low emissivity across their spectrum. This characteristic violates the key assumption of ...
Effect of diurnal temperature range on bioleaching of sulfide ore …
1. Introduction. Bioleaching technology refers to the use of acidophilic microbial oxidation to convert metals contained in minerals, such as sulfide ore, into free metal ions (Brierley and Brierley, 2001).Due to its low operational costs, mild reaction conditions and low environmental impact, this process has been widely used for metal …
Geochemistry of Magmatic Ore Deposits
13.8.1 Introduction. Magmatic ore deposits are masses of igneous rock enriched in useful chemical elements to such an extent that it is feasible to mine them at a profit. To be considered an ore, an accumula-tion of an element must combine high grade with large ton-nage and must be accessible to mining operations.
New insights on the role of seawater in sulfide ore flotation
It is an important research direction in the future to systematically establish the theoretical system of the influence of seawater on the interaction of sulfide minerals flotation. ... This study discusses the effects and mechanism of seawater on typical sulfide ore flotation. CRediT authorship contribution statement. Ningbo Song: Methodology ...
Mineralogy of Sulfides | Elements
Sulfide minerals are compounds in which sulfur is combined as an anion with a metal (or semi-metal) cation or cations. The definition is commonly widened to include minerals in which the anion is As or Sb, …
Exploring the Effect of Pulp Aeration and Lime-Aid Grinding …
The traditional high alkaline process (HAP) always encounters challenges in handling pyrrhotite-rich type copper sulfide ore, especially the slow copper flotation rate and the unsatisfactory separation efficiency. In this study, HAP was optimized via pulp aeration and lime-aid grinding, and their beneficial effect was studied systematically.
Efficient Synchronous Extraction of Nickel, Copper, and …
Currently, the sulfide ore are the predominant raw materials for refining extract nickel metal 1,2,3. Unfortunately, the grades of sulfide ores are falling as the higher grade reserves are ...
Mechanochemical effect of spontaneous combustion of sulfide ore …
To study the surface characteristics of sulfide ore particles, the fractal theory was applied to quantitatively characterize the surface fractal dimension Ds of sulfide ore microparticles in three ...
Effect of the ing performance of ammonium dibutyl …
the use of reagents in the flotation of slime-containing sulfide ores. 2. Materials and methods 2.1. Materials Samples of copper sulfide, with a copper grade of 0.36%, was procured from the Zijinshan Copper Sulfide Mine in Fujian Province, China. The chemical compositions of the ore samples are listed in Table 1.
Multi-stage sulfide evolution of the Moran Ni …
There are many systematic studies of the entire orebod-ies in Cu-bearing mafic systems showing fractional crys-tallization trends over various size scales, where Cu-rich sulfide …
The self-heating of sulfides: Galvanic effects
Sulfide self-heating can make working conditions dangerous as oxygen levels can be depleted and significant quantities of sulfur dioxide (SO 2) released (Ninteman, 1978). If uncontrolled, ignition can occur, which is particularly difficult to contain. Mount Isa Mines Ltd. (Australia) has seen cases of spontaneous combustion of sulfides ...
Controls on the metal tenors of sulfide ores in the Jinchuan …
To asses this, we systematically compared metal tenors (Ni, Cu, and the PGE) of ores from two perspectives — i) different ore types in each segment and ii) a single ore type across all four segments. Two major styles of metal tenor variations are documented. ... containing approximately 620 million tons (Mt) of sulfide ore at an …
Optimize flotation process of Mo–Bi sulfide ore for
This study aims to optimize the traditional flotation process of Mo–Bi sulfide ore by using the difference in natural floatability of minerals for cleaner production. Single-mineral flotation ...
A clean and efficient innovative technology for …
To elucidate the process mechanism of self-generation of thiosulfate from refractory sulfide gold ore at atmospheric pressure, this section systematically …
Magma evolution and the formation of porphyry Cu–Au ore …
Such inclusions are systematically associated with small (<10 μm), irregularly shaped sulfide melt inclusions. ... Assuming a Cu content similar to those in melt inclusions from volcanic rocks prior to sulfide saturation, >95% of the ore metals are extracted from the surrounding silicate melt by the sulfides. Concentrations of a few …
Multi-stage sulfide evolution of the Moran Ni sulfide …
The presence of pentlandite-pyrrhotite foliation in massive sulfides (Fig. 3a) and symplectitic chalcopyrite-pyrite intergrowths reflects an overprint of … See more
Gold upgrading in metamorphosed massive sulfide ore …
The metamorphosed Boliden volcanic-hosted massive sulfide (VHMS) ore deposit, northern Sweden, is characterized by an abundance of massive arsenopyrite ore and unusually high gold enrichments (up to 300–600 g/t) in crosscutting veins and fracture zones. ... (30–50 ppm on average) and systematically decrease to 0–2.7 ppm with …
(PDF) A New Innovative Method of Flotation Separation
PDF | On Jan 1, 2020, Changtao Wang and others published A New Innovative Method of Flotation Separation for High Sulfur Lead–Zinc Sulfide Ore | Find, read and cite all the research you need on ...
9.2.2: Sulfides and Sulfosalts
Metallic ore deposits contain many different sulfide and related ore minerals. Most are quite rare. The table seen here lists the more important species. Pyrite (iron sulfide) is most common.
Sulfide Ore
Sulphide ores that are mined for nickel and cobalt typically contain 1.5%–3% Ni and 0.05%–0.1% Co. Concentration, Smelting and Converting to Matte The sulphide ores …
A New Innovative Method of Flotation Separation for High …
In response to the environment and economic problems attributed to the usage of large amount of lime and sulfuric acid in high alkaline preferential process (HAPP), this research systematically investigated a new, environment friendly and cost-effective flotation approach for the selective separation of galena, sphalerite, and pyrite from a …
Controls on the metal tenors of sulfide ores in the …
open access. Highlights. •. Metal tenors of disseminated ores are mainly controlled by sulfide liquid–silicate melt interaction. •. Metal tenors of net-textured, …
Komatiites and nickel sulfide ores of the Black Swan area, …
The sulfide mineralogy varies systematically with sulfide mode and grade. In BSD59, there is a systematic change in sulfide mode and mineral assemblage from top to bottom of the ore-zone, corresponding to a gradual increase in sulfide mode from less than 1% to 25–35%.
A fresh approach to sulfide ores
A smelting workaround. 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 …
Gold and Silver Minerals in Sulfide Ore | Geology of Ore …
Abstract—Gold and silver are capable of forming stable natural compounds with different elements. For gold 36 minerals are known: 10 in the class "Native metals, intermetallic compounds" and 26 in the class "Sulfides (selenides, tellurides, arsenides, antimonides, bismuthides)." For silver, 194 minerals are registered in the MMA, …
The critical role of magma degassing in sulphide …
Most magmatic Ni-Cu sulphide ore deposits are characterised by sulphide amounts in large excess over proportions expected for a magma crystallizing along its …
The multiple sulfur isotope architecture of the Kambalda …
Archean country rock sulfides and associated komatiite-hosted sulfide ore at Kambalda (Western Australia) have been systematically investigated with respect to their Δ 33 S signatures. The sedimentary sulfides exhibit a large variation from − 0.1 to + 2.4‰ independent of their stratigraphic position or type of host rock.
Insights into the enhancement mechanism coupled with …
The enhancement mechanism of adapted adsorption behavior in the bioleaching of copper-bearing sulfide ore by Acidithiobacillus sp. was systematically investigated from a mineralogical viewpoint and compared to adsorption-deficient (DF) and adsorption-unadapted (UA) systems. With the assistance of the adapted adsorption …
New insights on the role of seawater in sulfide ore flotation
It is an important research direction in the future to systematically establish the theoretical system of the influence of seawater on the interaction of sulfide minerals flotation. 2. ... therefore, little research has been conducted on this topic. In fact, in sulfide ore flotation concentrates, silica is usually the most common impurity. ...
Crystallization of sulfide liquids and the interpretation of ore …
Sulfide phase relations in the system Fe-Ni-Cu-S have been widely studied for the understanding of ore deposit formation (Craig & Kullerud 1969, Naldrett 1969, Fleet & Pan 1994, Ebel & Naldrett ...