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Sulfide ores flux

  • A new sample preparation method for WD-XRF analysis of

    In this article, a methodology is described for the wavelength-dispersive X-ray fluorescence analysis of sulfide ores by fusion techniques. A boron nitride crucible is successfully utilised during pre-oxidation with no adhesion of sample powder and contamination. The combination of oxidant LiNO3 and flux Li2

  • Shock waves in air suspensions of sulfide ores SpringerLink

    Mar 15, 2021· A thermogravimetric study of oxidation of sulfide ore powders subjected to slow quasi-steady heating from 20 to 1000 °C is performed. Experiments on rapid shock wave and explosive heating of air suspensions of ore powders are carried out for modeling conditions of ore extraction in mines. Propagation of incident and reflected shock waves in air suspensions of fine-grained sulfide ores with

  • The role and selection of flux during high carbon

    The choice of high-carbon ferromanganese flux is related to the composition of the metal and ore to be refined. CaO-al2o3-sio2 slag is commonly used in iron and steel smelting, and the ash content of iron ore and coke is mostly acid oxides (SiO2, etc.), so alkaline fluxes (limestone or

  • Sulfide Ores - an overview ScienceDirect Topics

    Sulphide ores that are mined for nickel and cobalt typically contain 1.5%3% Ni and 0.05%0.1% Co. In practice, one adds a flux so that the iron oxide will be dissolved in a slag as a liquid and thus separation will be better. Adding more oxygen and increasing its partial pressure will result in the Cu being converted to

  • Kerala Syllabus 10th Standard Chemistry Solutions Chapter

    Nov 23, 2020· Roasting: It is the process in which the ore is heated in the presence of air at a temperature below its melting point so that the moisture content of ore, sulfur, phosphorous, etc, are converted into its oxide and can be removed. Sulfide ores also get converted into oxides. b. Zinc carbonate ore is converted to Zinc oxide. Question 4. a.

  • Sulfide Ore - an overview ScienceDirect Topics

    In Pergamon Materials Series, 1998. 10.6.6.1 Matte-slag-gas reactions in Cu-Fe-Ni sulphide ores. Sulphide ores are a major source of Cu, Ni and precious metals. A basic principle of the extraction processes is to blow air into the molten sulphide in order to oxidise (1) S, which forms a gas and (2) Fe, which forms predominantly FeO and then partitions to a slag phase which covers the matte.

  • Oxidizing flux for simultaneous smelting/converting

    A method of producing a metal matte from an unroasted high-gangue content ore which contains iron sulfides by using ferric oxide as a flux to react with the iron sulfides of the ore and provide the oxygen needed to both remove them from the matte and to produce additional ferrous oxide to slag the gangue thus reducing or eliminating the need for a separate converter step.

  • Caveman to Chemist Projects: Metals

    Know the chemical names and formulas for the metal ores in the mineral collection. Know the meaning of the words native,roasting, and smelting. Know how froth flotation works. Know balanced equations for the roasting or smelting of any of the metal ores discussed on this page. Know that roasting uses oxygen to remove sulfur from sulfide ores.

  • How to Choose Gold Smelting Flux - Superb Electromachinery

    Traditionally, for most ores, the composition of the flux mixture should contain between 40-50% Borax, 10-15% Soda Ash, and 5-1-% Silica sand. In most scenarios however, the properties of the ore will vary and so will require different proportions. Neutral Ores (Basis: 25g of Ore sample):

  • Copper smelting with calcareous flux - Inco Limited

    A process for autogenously smelting copper sulfide ore concentrate directly to semi-blister copper in which a calcareous flux is charged directly to an autogenouse furnace along with concentrate and copper-containing coolant. Furnace products are semi-blister copper, calcareous slag

  • Origin of Ni-Cu Sulfide Deposits: Questioning 'High-Flux

    Magmatic sulfide ore bodies contain large amounts of sulfide with high concentrations of metals such as Ni, Cu and PGE. Their presence in relatively small intrusions commonly is attributed to the segregation and accumulation of sulfide droplets from magmas that flow rapidly through conduits. This 'high-flux' model is at odds with the following observations.

  • 9.2. - Caveman Chemistry

    The non-ferrous minerals in the ore, the gangue, melt under the influence of the flux, leaving a bloom of solid iron suspended in the melt. This solid is removed to an open hearth, or forge, where it is sequentially heated to red heat and then hammered on an anvil to produce wrought iron. Sulfide ores must be roasted to remove sulfur.

  • Matte metallurgy Britannica

    Matte, crude mixture of molten sulfides formed as an intermediate product of the smelting of sulfide ores of metals, especially copper, nickel, and lead.Instead of being smelted directly to metal, copper ores are usually smelted to matte, preferably containing 4045 percent copper along with iron and sulfur, which is then treated by converting in a Bessemer-type converter.

  • PAPER OPEN ACCESS Effect of flux addition and reductant

    Nickel sulfide ores are formed by volcanic or hydrothermal processes and contain lots of copper and cobalt and contain few precious metals such as gold, platinum, palladium, and rhodium [5]. Nickel sulfide ores are found in Russia and Canada [6]. During this time, as much as 60% of the need for nickel is commercially supplied from sulfide ores.

  • Pyrometallurgy - Wikipedia

    Pyrometallurgy is a branch of extractive metallurgy.It consists of the thermal treatment of minerals and metallurgical ores and concentrates to bring about physical and chemical transformations in the materials to enable recovery of valuable metals. Pyrometallurgical treatment may produce products able to be sold such as pure metals, or intermediate compounds or alloys, suitable as feed for

  • Smelting and Roasting Ores to recover gold, silver and

    The problems with processing sulfide ores by the normal methods and the fact that most of those problems can be removed by first roasting the ore, led to the development of a variety of ore roasting systems that were installed in the mills of that day. Heating ores to elevated temperatures is called roasting, and it causes the oxygen in the air

  • XRay fluorescence analysis of base metal sulphide and

    A procedure for the wavelengthdispersive xray fluorescence determination of major, minor and trace elements in fused discs of base metal sulphide ores and of ironmanganese oxide ores is described. The objective was to obtain reasonable chemical analyses of ore samples of a wide compositional range.

  • Sulfur isotope fractionation in magmatic systems: Models

    The effect of Rayleigh distillation by outgassing of SO2 and H2S on the isotopic composition of sulfur remaining in silicate melts is quantitatively modelled. A threshold mole fraction of sulfur in sulfide component of the melts is reckoned to be of critical importance in shifting the δ34S of the melts mith respect to the original magmas. The partial equilibrium fractionation in a magmatic

  • Flux (metallurgy) - Wikipedia

    In metallurgy, a flux (derived from Latin fluxus meaning "flow") is a chemical cleaning agent, flowing agent, or purifying agent. Fluxes may have more than one function at a time. They are used in both extractive metallurgy and metal joining. Some of the earliest known fluxes were sodium carbonate, potash, charcoal, coke, borax, lime, lead sulfide and certain minerals containing phosphorus.

  • US4457779A - Oxidizing flux for simultaneous smelting

    A method of producing a metal matte from an unroasted high-gangue content ore which contains iron sulfides by using ferric oxide as a flux to react with the iron sulfides of the ore and provide the oxygen needed to both remove them from the matte and to produce additional ferrous oxide to slag the gangue thus reducing or eliminating the need for a separate converter step.

  • Smelting tips for the Mocrowave Gold Kiln GPK

    Flux: Understanding how the GPK Flux works can help everyone with their smelting experience. The flux's purpose is to conduct the microwave energy, suspend the impurities contained in the smelted concentrates and allow the precious metals to separate from them. Roasting a sulfide ore and driving the sulfur off to oxidize the ore smells

  • Sulphide Ore Extraction Process To Copper Product

    Sulphide Ore Extraction Process To Copper Product. Copper minerals are separated from useless material by flotation using froth forming solutions.smelting smelting of the copper concentrate and extraction by heat, flux and addition of oxygen.sulphur, iron and other undesirable elements are removed and the product is called blister copper.refining this is the final stage in the process for.

  • Gold Recovery And How To Choose The Right Process

    Blasting, crushing, and grinding are necessary to liberate the gold for recovery. Hard rock gold deposits have three sub-classes: free-milling, sulfide-associated and refractory. Free-Milling Gold. Gold ore is considered free-milling when it is easily liberated by grinding and separated from the other minerals.

  • Gold(I) sulfide - Wikipedia

    Gold(I) sulfide is the inorganic compound with the formula Au 2 S. It is the principal sulfide of gold. It decomposes to gold metal and elemental sulfur, illustrating the "nobility" of gold. Gold(I) sulfide Names IUPAC name. Gold(I) sulfide. Other names Aurous sulfide. Identifiers CAS Number.

  • A new sample preparation method for WD-XRF analysis of

    Jan 07, 2016· In this article, a methodology is described for the wavelength-dispersive X-ray fluorescence analysis of sulfide ores by fusion techniques. A boron nitride crucible is successfully utilised during pre-oxidation with no adhesion of sample powder and contamination. The combination of oxidant LiNO 3 and flux Li 2 B 4 O 7 at a mass ratio of 20 : 80 is demonstrated to be suitable for the

  • (PDF) A new sample preparation method for WD-XRF analysis

    Sulfide ores with varied concentrations, including four ore reference materials (zinc, copper, and iron sulfides) and two copper-nickel and iron sulfide samples, were used to develop an improved

  • US3890139A - Continuous process for refining sulfide ores

    A continuous process for refining metal sulfide ores which is carried out by arranging a smelting furnace and a blister furnace, each maintaining discreteness in the reaction zones, wherein a separator is provided subsequent to the smelting furnace so as to limit the function of the smelting furnace to the melting of the raw material and absorption of the copper content in a slag which slag is

  • Suppliers of Fire Assay Flux & Litharge

    Fire Assay Flux is used in geochemical assay laboratories for detection of gold in ore samples. Legend, Inc is North America's premier manufacturer and supplier of quality, gold free flux and litharge. Our quality system guarantees the levels of gold in the fire assay flux are less than 1-1.5ppb in the litharge component of the flux, making it

  • Chapter 6 Copper Production Technology

    Sulfide ores (0.5-2% Cu) I Comminution 1 II I FIotation I Concent rates (20-30% Cu) 1 6-1.-FIow Sheets for Copper Production Hydrometalluigical Oxide and sulfide ores (0.3-2.0% Cu) ore flux \ m The Egyptian copper smelting furnace was filled with a mixture of copper ore, charcoal and iron ore to act as a

  • metallurgy Definition & History Britannica

    Small pieces of iron would have been produced in copper smelting furnaces as iron oxide fluxes and iron-bearing copper sulfide ores were used. In addition, higher furnace temperatures would have created more strongly reducing conditions (that is to say, a higher carbon monoxide content in the furnace gases).

  • Metallurgy Process, Definition with Examples Types of

    May 04, 2020· Sulfide ores are then drenched by oil faster than impurities present in them and impurities present in sulfide ores are drenched by water faster than sulfide ores. This method is very common in Metallurgy. Smelting is called smelting by mixing the ore with coke and proper flux and heating the mixture to a high temperature.

  • Fusion 01 2 - FLUXANA

    FX-SUL2 Borate flux for sulfide ores Additives Both shapes of flux - granular or beads - share the same chemical properties and will give the same result when used in fusion. Only in the process of weighing, the differences of these types come into play. Granular flux

  • Sulfide Ores - an overview ScienceDirect Topics

    Complex sulfide ores are fine-grained, intimate associations of chalcopyrite (CuFeS2), sphalerite (ZnS) and galena (PbS), disseminated in dominant pyrite, and containing valuable amounts of minor elements. Generally, collectors employed for sulfide recovery are of

  • BLADE-SHAPED DIKES AND NICKEL SULFIDE DEPOSITS: A

    The sulfide ores themselves contain a polymict assemblage of paragneiss and other country-rock xenoliths and xenocrysts up to decimeters in size and This interaction was the result of the emplacement of picritic to komatiitic melts through a high-flux conduit and selective erosion of nonrefractory sedimentary layers within a predominantly

  • How to Make Flux for Sulfide Ores ulymugox

    Feb 16, 2012· How to Make Flux for Sulfide Ores. February 16, 2012 Flux is a material that is used to remove oxide film from metal. One application for flux is the soldering of metals such as copper. To make your old solder, mix ingredients with water which is boiled away. The result is a powder that you can use to coat the metal that you want to solder.

  • Sulfide Ore - an overview ScienceDirect Topics

    Sulphide ores are a major source of Cu, Ni and precious metals. A basic principle of the extraction processes is to blow air into the molten sulphide in order to oxidise (1) S, which forms a gas and (2) Fe, which forms predominantly FeO and then partitions to a slag phase which covers the matte.

  • ASSAYING WITH THE BLOWPIPE; LEAD, COPPER AND SILVER ORES

    In general the slag should be as nearly neutral as possible, the amount of flux small and the temperature high in order that the operation may be completed in as short a time as possible. 4 Sulfide ores should be roasted in a clay crucible which removes not only the sulfur but arsenic and antimony which might also be present. The time of fusion

  • US4457779A - Oxidizing flux for simultaneous smelting

    A method of producing a metal matte from an unroasted high-gangue content ore which contains iron sulfides by using ferric oxide as a flux to react with the iron sulfides of the ore and provide the

  • Which flux can be used to remove a metal oxide impurity

    Which flux can be used to remove a metal oxide impurity from a sulphide ore of noble metal? Substantiate. Prev Question Next Question Sulphide ores are concentrated by froth floatation process.a) Write the name or formula of any two sulphide ores of copper.

  • Small Fire Assay Kit - Equipment - 911Metallurgist

    Preparation of Assay Flux for Sulfide Ores STEP 1. If you have litharge, add 25 lbs to the pail of flux. This would be the simplest way to use your flux.

  • Small Scale Treatment of PM Sulfide Ores - Gold Refining

    Feb 15, 2020· The ore has a 5 to 10 percent sulfide content, so I expect about 10 to 20 pounds of sulfide concentrate. Dealing with 10 to 20 pounds is a lot easier than 200 pounds. There will be some loss of values in this operation - but I accept this because although the method is less than optimal, it's the best I can put together.

  • Ore - Hyperleap

    Mining is the extraction of valuable minerals or other geological materials from the Earth, usually from an ore body, lode, vein, seam, reef or placer deposit. Smelting is a process of applying heat to ore in order to extract a base metal. Some sulfide minerals are economically important as metal ores.

  • Copper Smelting Chemistry Tutorial - AUS-e-TUTE

    A typical copper ore contains between 0.5% and 2.0% copper. A high grade ore produces a high yield of metal. A low grade order produces a low yield of metal. Copper can be extracted from sulfide ores (usually higher grade ores) by direct smelting. The earliest evidence of copper smelting occurs in Serbian artefacts dating from around 5000 BC.

  • Sample Preparation and X-Ray Fluorescence Analysis of

    The Baimazhai massive sulfide ores yield a ReOs isochron age of 259 ± 20 Ma (MSWD = 0.025), which is the same as the major eruption stage of the Emeishan large igneous province and the

  • Sample Preparation and X-Ray Fluorescence Analysis of

    Sulfide ores with varied concentrations, including four ore reference materials (zinc, copper, and iron sulfides) and two copper-nickel and iron sulfide samples, were used to develop an improved

  • Rebellious Ores: Sulfides, Selenides and Tellurides

    Sulfide ore from Austin that didnt contain at least 70 ounces per ton of silver had to go out on the dumps, because it was unprofitable to ship to the mill! Calaverite - Gold Telluride: This sad story was repeated all over the Western US and actually all across the world. Over the years, miners worked to develop new ways to handle these