Sulfur in ore formation
The baric ore trap (P-trap) in the formation of sulfide ores in the section (a) and in the PT diagram (b). 1 – enclosing rocks of the lava strata of the Lower Triassic; 2 – rocks of a fully differentiated intrusive (a – taxite gabbro-dolerites, b – other rocks of intrusive); 3 – sedimentary rocks of the Tunguska series; 4 – fluid ...
List Sulphide Minerals
The sulphide minerals are compounds of the metals with sulphur. Nearly all these minerals have a metallic luster, i.e., the peculiar shining appearance of ... found sometimes in gold ores. Tellurides of gold and silver …
(PDF) Mineralogy of Sulfides
In ores asso ciated with ... Pyrite (FeS 2 ) is the most abundant sulfide on the ... whereas the secondary Ni-sulfides together with the metallic alloys formed in response to changing fO2 and fS2 ...
Distilling zinc with zinc sulfide ores: The technology of Qing …
It is difficult to distill metal zinc partly due to the reduction temperature of zinc oxide ores close to the boiling point of metallic zinc. The treatment of zinc sulfide ores is more complicated since they have to be roasted before smelting. Previous archaeometallurgical studies on zinc smelting technology in China mainly focus on the distillation of zinc oxide ores.
List Sulphide Minerals
FeS2. — Color, pale brass-yellow; fine powder (streak), greenish black or brownish black; luster, metallic; H = 6 to 6.5 i. e., a little harder than ordinary steel; it strikes fire with steel, and the name "pyrite" refers to this, being derived from the Greek word for fire; G = 4.95 to 5.10, i.e., it is about 5 times as heavy as water. Since a …
Sulfide Mining Fact Sheet
Sulfide Mining Fact Sheet What is sulfide mining? òSulfide mining ó refers to mining metals that are found in sulfide-bearing rock. Mining metals in sulfide ores can be done in two ways: in underground mines where the ore deposits are very deep, and in open-pit mines when the deposits are relatively shallow.i
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 …
Flotation separation of metallic sulfide ores
sulfide ores metallic sulfide dithiocarbamate collector Prior art date Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.) Expired - Lifetime Application number
Sulfide Ores: Characteristics and Economic …
Sulfide ores are a very important source of non-ferrous metals (nickel, cobalt, copper, zinc, lead, molybdenum, mercury, etc.). Depending on the ratio of sulfides and other minerals in the rock, sulfide ponds are classified as: solid, massive, …
(PDF) Mineralogy of Sulfides
Metal sulphides are the most important group of ore minerals. As shown in this brief introduction, much is known about their compositions, crystal structures, phase relations and paragenesis.
sulfide ores
Sulfide minerals are those in which metallic and non-metallic elements are combined mainly with sulfur (S) and less frequently with selenium (Se), tellurium (Te), arsenic (As), antimony (Sb) and, rarely, bismuth (Bi).In other words, this family of minerals includes the sulfides, tellurides, selenides, arsenides, and antimonides of different transition metals.
9 Ore Deposits and Economic Minerals – Mineralogy
Some ores are valued for their mineral properties, some for the elements they contain, and others because they contain valuable gems. ... Most metallic ore minerals are native elements, sulfides, sulfosalts, oxides, or hydroxides. Ore deposits are highly variable in nature and origin. ... for example, are rich in sulfide minerals. After mining ...
Oxidative Hydrometallurgy of Sulphide Minerals
The oxidation of sulfide ores by ozone can occur by dissolution of sulfide species and the formation sulfate ion, as suggested by Elorza et al. Then, the global reaction of the pyrite oxidation in the presence of ozone can be described as follows: FeS2 + 2/3O 3 + 5/2O 2 + H 2O = Fe 2+ + 2SO 42-+ 2H + (14)
Sulfide Flotation
In addition, pyrite is widely found in various sulfide ores. In the galvanic corrosion in the pulp, pyrite always acts as the cathode, while other minerals with low electrostatic potential act as the anode. ... Adding 10 g/L of sodium chloride to the autoclave, which converts the metallic gold in the ore to an ionic form during pressure ...
Microbial leaching of metals from sulfide minerals
Microbial leaching is an economical method for the recovery of metals from low-grade mineral ores. Two thousand years ago, microbial leaching of copper as copper sulfate from sulfide ores and recovery of metallic copper by 'cementation' was known both in Europe and China (Fossi, 1990): CuSO 4 +Fe 0 →Cu 0 +FeSO 4.
Sulfide Minerals
The sulfide mineral specimens you see in rock shops come from the deep levels of mines, and most display a metallic luster. Bornite (Cu 5 FeS 4)is one of the lesser copper ore minerals, but its color makes it highly collectible. …
An electrochemical model of the induced-polarization …
A disseminated sulfide ore is idealized by a system of electronically conducting metallic spheres randomly dispersed in an electrolytically conducting host medium. When an external electric field is applied, the transport of cations and anions in the interphase region near the metal-electrolyte interface will involve both drift and diffusion ...
Mineral
Mineral - Sulfides, Crystals, Properties: This important class includes most of the ore minerals. The similar but rarer sulfarsenides are grouped here as well. Sulfide minerals consist of one or more metals combined with …
EXTRACTING METALS FROM SULFIDE ORES
About 60% of the world 2009 nickel production of 1.4 million tonnes was derived from sulfide ores, but an ever-increasing proportion is coming from other ores (such as laterites, in which nickel is present in an oxy-hydroxide or silicate matrix). ... Electrorefining is successful because metallic impurities that are more noble than copper, that ...
Online analysis of minerals from sulfide ore using near‐infrared …
Unfortunately, in case of sulfide ores, the method suffers from inadequate detection of lightweight materials such as sulfur and the common nature of iron, as iron is constantly present in several different minerals found in sulfide ores. Raman spectroscopy can be used to detect the minerals instead of mere elements of ore.
Review of the hydrometallurgical processing of non-sulfide zinc ores
The discovery of pure metallic zinc is credited to the German chemist, Andreas Marggraf, who isolated the element in 1764. ... accounting for about 85% of zinc production. The global reserve of sulfide ores is expected to last for several decades, and non-sulfide ores will be a significant alternative source for zinc metal production to meet ...
METHODS FOR PROCESSING OF ANTIMONY …
The production of metallic antimony from crudum and sulfide concentrates containing at least 30 % - 65 % antimony is carried out by precipitation melting at 1100℃ - 1150℃ by reaction: Sb 2 S 3 + 3 Fe = 2Sb + 3FeS (1) In the absence of iron scrap, sulfide ores and concentrates are converted into antimony oxide for
Sulfide Minerals
Most of the sulfide minerals are economically important as metal ores. These are inorganic compounds. Sulfide minerals are structurally simple. They not only exhibit high symmetry in …
Sulfide Ores: Characteristics and Economic …
Sulfide ores are ores in which minerals are found in chemical compounds with sulfur. Sulfide ores are of great importance in the mining and processing industry, as well as in metallurgy. The choice of ore enrichment method depends very …
Arsenic Releasing from Poly-Metallic Sulfide Deposits at
sulfide ores are the major origin of As in groundwater. However, research concerned with the mechanism of As releasing from poly-metallic sulfides ores in the HP is quite rare and needs further studies. In this study, two representative poly-metallic sulfide ores were selected from Yin Mountains for mineral composition
Sulfide Ore
Most non-ferrous metals such as copper, lead, zinc, or cobalt deposit in the earth's crust naturally, mainly as sulfides (Ullmann, 1996b). Zinc sulfide ores are the feedstock used for 90% of zinc …
Smelting and Roasting Gold and Silver Ores
Smelting and Roasting Gold and Silver sulfide Ores to recover values: . ... The metal in the nails reacts with the metals in the sulfides reducing the metals to their metallic state. This is handy when processing silver containing minerals to convert them to silver metal. The addition of scrap iron to smelt mixes is a useful ...
Research progress and prospect of fluidized bed metallic ore …
Fluidized bed roasting technology is anticipated to be applied to more types of metallic ores. Meanwhile, it could be rapidly developed in flow and particle size optimization, pollutant control, and energy utilization. ... the bubbling fluidized bed used for roasting zinc sulfide concentrate and other ores has achieved relatively good roasting ...
What is an Ore and where are the Ores of Metallic
Metallic Ores. Metallic ores are present in all kinds of rocks and even some types of soil. Metallic minerals are concentrated into rich masses by various processes like erosion/weathering, hydrothermal and Igneous processes. Metals like iron, nickel, and platinum are mostly present as sulfide ores and are present in cooling magma. Metallic ...
14.3: Metals and Ores
Metal ores are generally ... Copper is one of the few metals that can occur in nature in a directly usable metallic form (native metals). ... it was the first metal to be smelted from sulfide ores, c. 5000 BC, the first metal to be cast into a shape in a mold, c. 4000 BC and the first metal to be purposefully alloyed with another metal, tin, to ...