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Why sulphide ores are converted into oxide ores in metallurgy

Reduction of sulphide ore can be done directly but we generally convert sulphide ore into oxide ore in metallurgical process. general process convertion of

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Why is roasting carried out in sulfide ores and not on carbonate

Jan 14, 2017 Roasting is the process of converting an ore into its oxide by heating strongly in the presence of an excess of air oxygen, so that oxygen reacts

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copper extraction and purification Chemguide

Sulphide ores such as chalcopyrite are converted to copper by a different The ores typically contain low percentages of copper and have to be Much like in the Blast Furnace, the calcium carbonate is involved in the production of the slag.

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Sulfide mineral

The metals that occurmonly in sulfides are iron, copper, nickel, lead, Themon sulfide crystalling in this manner is galena PbS, the ore

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50.5 EXTRACTION OF METALS METALLURGY Chemistry

This process is generally used for the concentration of sulphide ores. oxide of the metal because it is easier to reduce an oxide than the carbonate or sulphide.

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9. metallurgy Sakshi Education

Metals generally occur as their oxides, carbonates, sulphides, chlorides, silicate minerals. . Oxide ores and carbonate ores are concentrated by this method.

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Ore minerals Mineralogical Society of America

This concentration is usuallyplished by dissolution of the element by hot water hydrothermal ore Antimony The primary ore of antimony is its sulfide, stibnite. Currently the major U. S. production is from lithium carbonate brines.

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geochemistry Why do carbonates, oxides, and pure metals

Metal sulfides are much less soluble in water than metal carbonates. Iron II sulfide is denser than iron II carbonate but less dense than iron II oxide. .. In marine environment, reducing conditions generally occur a short distance below . Bog ores form thin layers of earthytopisolitic iron oxides at the surface or below

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What is the difference between a sulfide, carbonate and silicate

Nov 26, 2017 For example, iron ore is usually the oxide form, but iron could also exist as iron sulfide Fools Gold, FeS , iron carbonate in two different

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Flotation chemistryplex sulphide ores : Recycling of DiVA

carbonate species on sphalerite were also revealed at pH 11.5 in the Bench scale flotation using twoplex sulphide ores showed that chalcopyrite .. The required concentration of each solution was usually prepared followed.

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Polymetallic sulfide ores hosted in Late Permian carbonate at the

Jul 1, 2016 Polymetallic sulfide ores Zn, Pb, Fe, Cu, Ag, and Cd found in the Alanish locality of northern Iraq are hosted by dolostone in the Late Permian

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Calcination

Carbonate, bicarbonate and hydroxide ores are generally subjected to calcination Generally sulphide ores are subjected to roastingpon oxides are

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A review of major nonsulfide zinc deposits in Iran ScienceDirect

Commonly, nonsulfide minerals in these deposits consist of two types of ore: .. The thickness of the zinc carbonate ore zone may reach up to 200 m this ore

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Roasting of Sulfide Ores Caveman Chemistry

Though found as native metal, it is more often found in its sulfide, carbonate and oxide ores. It ranks second behind iron in worldwide production. Bronze, as

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Copper Ore Types: Sulfides vs. Oxides Investing News Network

Apr 10, 2018 Copper sulfide ores are typically the most profitable copper ores to mine. dominated by soluble minerals, such as copper carbonate minerals.

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evaluating process options for treating some refractory ores abstract

high carbonate and arsenic content and an ore with high silver grade. No matter what process option is used it generally involves the oxidation of sulphide.

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Occurrence of Metals: Metal Ores, Methods of Extraction, Examples

Metals in the middle of the reactivity series i.e metals like lead, zinc, copper, etc are moderately reactive and are generally present as carbonates or sulphides.

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Why is roasting carried out in sulphide ores? Quora

Roasting is carried out in sulphides ore in order to purify the metal by converting the limited supply of air so Roasting cannot be carried on carbonate ores.

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Metallurgy: Principles and methods of Isolation and extraction of

Nov 28, 2017 Important carbonate ores are limestone CaCO3, Calamine Sulphurised Ores: These ores consist of sulphides of metals like iron, lead, mercury etc. e.g. iron ores are usually contaminated with unwanted earthlysandy or

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Copper extraction

Copper extraction refers to the methods used to obtaining copper from its ores. The conversion If the ore is primarily sulfide copper minerals such as chalcopyrite, the ore is . Such carbonate concentrates can be treated by a solvent extraction and Such oxide ores are usually leached by sulfuric acid, usually in a heap

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CarbonateHosted Base Metal Deposits IntechOpen

Dec 7, 2011 Carbonatehosted base metal sulphide deposits are discussed with .. brecciamonly regarded as feeders to overlying tabular

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Why Carbonate and sulphide ores are usually converted into oxides

It is easier to obtain a metal from its oxidepared to its sulphides and carbonates. So the metal sulphides carbonates must be converted to metal oxides

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CHEMGUIDE: Calcination and roasting

These are moderately reactive metals and are usually present as sulphides or carbonates. A metal is obtained from its ore by the processes of reduction or by

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PDF Mixed sulphideoxide lead and zinc ores: ResearchGate

Mixed sulphideoxide lead and zinc ores are most often found in the transition, and occasionally . Ammoniaammonium carbonate AAC leaching and precip.

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The effect of sodium carbonate on the dispersion behaviour and

The sulphide ores are universally treated by flotation, and the major gangue Sodium carbonate is a reagentmonly used to modify the pulp pH.

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class ten science metals nonmetals exercise solution

Carbonate and sulphide ores are usually converted into oxides during the process its oxide is much easier than doing that from a metal sulphide or carbonate.

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zinc carbonate and related copper carbonate ores at ophir, utah.

portant source of lead carbonate and of lead and zinc sulphide ores, summit of the ridge and are typically associated with lead deposits. The wall rock is rather

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Roasting metallurgy

Roasting is a process of heating of sulfide ore to a high temperature in presence of air. Often before roasting, the ore has already been partially purified, e.g. by froth flotation. Carbonate ores react in a similar manner as the oxide ore, after

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Geoscience BC 2009030 Thu Jul 12, 2018

Several carbonatehosted sulphide deposits in the Kootenay terrane, also know as red ores because theymonly of Feoxyhydroxides, goethite,

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Why do most of the metals exist as sulphide but not as oxides? Quora

A mineral from which a metal can be extracted economically is called an ore. ores of these metals occur as i oxides ii sulphides iii carbonates iv halides and v silicates. Some sulphide ores undergo oxidation by air to form sulphates. Why in most of the metal carbonyls is the metal usually in a low oxidation state?

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give reason why roasting is carried out on sulphide ores and not on

Mar 17, 2018 give reason why roasting is carried out on sulphide ores and not on Calcination: It is the process in which a carbonate ore is heated strongly

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Supergene processes in zincleadsilver sulfide ores in carbonates

Nov 1, 1983 Abstract. EhpH relations have been examined for assemblages of the Burgin Mine, East Tintic District, Utah, at the temperature of 60 degrees

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Extraction of Moderately Reactive Metals Metals and Nonmetal

They are usually present as sulphides or carbonates in nature. Roasting Roasting is the process of strongly heating a concentrated ore in excess air. Sulphide

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NCERT Solutions for Class 10 Science Chapter AglaSem Schools

ii Ore: Minerals from which metals can be extracted profitably are known as ores. . d Carbonate and sulphide ores are usually converted into oxides during

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Conversion of Concentrated Ore into Metal Oxide FunScience.in

CONVERSION OF CONCENTRATED ORE INTO METAL OXIDE. After concentration of ores, the sulphide or carbonate ores of some metals are converted into

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why are metals sulphide and carbonate converted into metal oxide

Oct 7, 2012 It is easier to obtain metals from their oxides rather than from carbonates or sulphides. So the ore is first converted into an oxide. A carbonate

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Auriferous Deposits 911 Metallurgist

Mar 17, 2017 The gold content in placer ores is usuallypared with the associated gold in copper sulphide ores is often coarsegrained and associated with If the quantity of reactive silicates and carbonates is high, the ability to

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Postrecrystallisation mobilisation phenomena in metamorphosed

Metamorphosed stratabound iron and basemetal sulphide deposits often exhibit microtextures in which fractures in KEVWORDS: metamorphism, sulphide ores, microtextures, Gressli, Norway. mobilisation of pyrite, barite, carbonate and.

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Why are sulphide ores converted to oxide form before reduction to

Jan 11, 2018 This process is generally applied to sulfide minerals. We not only reduce sulphide ore into oxide but also carbonate ore into oxude and the

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The Extraction of Copper Chemistry LibreTexts

Jul 12, 2018 Chalcopyrite also known as copper pyrites and similar sulfide ores aremonest ores of copper. The ores typically contain low

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