Copper Ore Roasting

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Roasting

17 In order that roasting may be effective the ore must first be crushed to powder The most suitable degree of comminution must be found by trial for each particular ore The more coarsely it is crushed consistently with good roasting the more easily is it leached

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Outotec offers new partial roasting process to purify

The partial roasting process for copper concentrates is a single-stage roasting process The impurities are volatilised and the process produces calcine which is rich in copper sulphide but has a

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Arsenic removal from copper–silver ore by roasting in

Copper–silver ore used in this work was from Canada Mineral is black powder particle size under 60 mesh Table 1 shows that the copper–silver ore containing such elements as copper silver lead gold has great economic value Owing to harmful arsenic it is difficult to use the traditional method of copper

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Roasting (metallurgy)

Roasting consists of thermal gas–solid reactions which can include oxidation reduction chlorination sulfation and pyrohydrolysis In roasting the ore or ore concentrate is treated with very hot air This process is generally applied to sulphide minerals

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Molybdenum Processing

The milled ore/gangue powder is mixed with a liquid and aerated in the flotation step The less dense ore rises in the froth to be collected while the gangue sinks to be discarded Flotation separates the metallic minerals from the gangue this way and – in the case of copper/ molybdenum ores – separates molybdenite from copper sulphide

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Solved: Copper metal can be prepared by roasting copper

Copper metal can be prepared by roasting copper ore which can contain cuprite (Cu 2 S) and copper(II) sulfide Suppose an ore sample contains 11 0% impurity in addition to a mixture of CuS and Cu 2 S Heating 100 0 g of the mixture produces 75 4 g of copper metal with a purity of 89 5%

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High

"Around 30% of world copper concentrates output contains more than 0 1% or 1 000 ppm As complex copper concentrates have an As content greater than 0 2% (2 000 ppm) with no upper limit although China imposes a limit of 0 5% As (5 000 ppm) on imported base metal concentrates

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Copper: smelting producing and classification

Copper that is mined from copper ore after beneficiation becomes high quality copper concentrate Then after being smelted refined copper and copper products are yielded Then after being smelted refined copper and copper products are yielded

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roasting ore

Roasting-fiirnaces are either oxidizing or chloridizing according as the purpose for which they are used is to convert the metals in the ores Roasting ore made simple - YouTube 2012-4-5 Roasting ore made simple communityscrap

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Roasting (metallurgy)

Roasting consists of thermal gas–solid reactions which can include oxidation reduction chlorination sulfation and pyrohydrolysis In roasting the ore or ore concentrate is treated with very hot air This process is generally applied to sulphide minerals

Get price

Image

Roasting (metallurgy)

Roasting consists of thermal gas–solid reactions which can include oxidation reduction chlorination sulfation and pyrohydrolysis In roasting the ore or ore concentrate is treated with very hot air This process is generally applied to sulphide minerals

Get price

Image

Molybdenum Processing

The milled ore/gangue powder is mixed with a liquid and aerated in the flotation step The less dense ore rises in the froth to be collected while the gangue sinks to be discarded Flotation separates the metallic minerals from the gangue this way and – in the case of copper/ molybdenum ores – separates molybdenite from copper sulphide

Get price

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roasting copper sulfide

2016928enspenspSulphide ores of copper are insoluble in dilute sulphuric acid leaching solutions but a very high extraction can be obtained if the copper ore is in the oxidized condition The problem is to convert the sulphide into the oxide form This can be done Price US3799764A Roasting of copper sulfide concentrates

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Roasting (metallurgy)

Roasting consists of thermal gas–solid reactions which can include oxidation reduction chlorination sulfation and pyrohydrolysis In roasting the ore or ore concentrate is treated with very hot air This process is generally applied to sulphide minerals

Get price

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US3751240A

A method of roasting copper-iron-sulphide ore concentrate or mixture wherein the ratio of sulphur values to copper values is preferably at least one to yield a calcined product for the separation and recovery of copper values by acid leaching and electrolytic deposition having at least 99 percent of its copper values soluble in dilute sulphuric acid and no more than 10 percent of the iron

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Principals of roasting and its types

Oct 04 2014Roasting is a metallurgical process involving gas–solid reactions at elevated temperatures with the goal of purifying the metal component(s) Often before roasting the ore has already been partially purified e g by froth floatation The concentrate

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Part Four Competitiveness

ore than the net tonnage of copper in the ore 5 A tonne of lean ore requires no more capital energy labor and supplies to mine than a tonne of rich ore However because the rich ore con-tains more copper it requires less of these inputs per tonne of copper recovered The gross ton-nage basis for costs is particularly important in

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Copper Cliff Smelter Superstack Sudbury

Copper Cliff Smelter Superstack Sudbury Stop 2: A moving overhead trestle dumps ore from rail cars on a blanket of logs in preparation for open roasting during the early 1900's Courtesy of City of Greater Sudbury Historical Database

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Energy and Environmental Profile of the U S Mining

Energy and Environmental Profile of the U S Mining Industry 5 1 Process Overview 5 1 1 Copper Ore Mining Copper is commonly extracted from surface underground and increasingly from in situ operations In 2000 the principal mining States in descending order Arizona Utah New Mexico and Montana accounted for 99 percent of domestic production

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Synchronous extractions of nickel copper and cobalt by

Roasting temperature is an important parameter in the chlorinated roasting process and 300 ∼ 600 C was chosen to explore its effect on the extraction of Ni Cu Fe and Co on the condition that the dosage of NH 4 Cl was 200% the proportion of oxygen in the roasting atmosphere was 10% the particle size of the ore was ∼75 μm and the roasting time was 2 h

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A Review on Novel Techniques for Chalcopyrite Ore Processing

Chalcopyrite is the copper ore deposit of Falum Sweden of Namagaland in South Africa However vast crystals or deposits occur in Ishiagu Ebonyi State South Eastern region of Nigeria (West Africa) High great chalcopyrite deposit can also be found in Baluba East of Lusaka (Zambia)

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High

"Around 30% of world copper concentrates output contains more than 0 1% or 1 000 ppm As complex copper concentrates have an As content greater than 0 2% (2 000 ppm) with no upper limit although China imposes a limit of 0 5% As (5 000 ppm) on imported base metal concentrates

Get price

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why is roasting carried out on sulphide ores and not on

Aug 15 2010Roasting is a much costlier process than calcination the process that is used for extraction of carbonate ores in which air is not present in the reaction vessel During roasting if done on carbonate ores then the metal at that high temperature that is obtained in roasting might again react with the components of air such as air

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PARTIAL ROASTING OF COPPER CONCENTRATE WITH

Partial roasting is a method to clean the concentrate from arsenic and thereby produce a suitable raw material for the copper smelter Also mercury is commonly found in copper bearing minerals In partial roasting process the both the arsenic and mercury are volatilized while a part of the sulphur is used as energy during the roasting

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US3751240A

A method of roasting copper-iron-sulphide ore concentrate or mixture wherein the ratio of sulphur values to copper values is preferably at least one to yield a calcined product for the separation and recovery of copper values by acid leaching and electrolytic deposition having at least 99 percent of its copper values soluble in dilute sulphuric acid and no more than 10 percent of the iron

Get price

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High

"Around 30% of world copper concentrates output contains more than 0 1% or 1 000 ppm As complex copper concentrates have an As content greater than 0 2% (2 000 ppm) with no upper limit although China imposes a limit of 0 5% As (5 000 ppm) on imported base metal concentrates

Get price

Image

US3751240A

A method of roasting copper-iron-sulphide ore concentrate or mixture wherein the ratio of sulphur values to copper values is preferably at least one to yield a calcined product for the separation and recovery of copper values by acid leaching and electrolytic deposition having at least 99 percent of its copper values soluble in dilute sulphuric acid and no more than 10 percent of the iron values soluble in dilute

Get price

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roasting copper sulfide

2016928enspenspSulphide ores of copper are insoluble in dilute sulphuric acid leaching solutions but a very high extraction can be obtained if the copper ore is in the oxidized condition The problem is to convert the sulphide into the oxide form This can be done Price US3799764A Roasting of copper sulfide concentrates

Get price

Image

roasting copper sulfide

2016928enspenspSulphide ores of copper are insoluble in dilute sulphuric acid leaching solutions but a very high extraction can be obtained if the copper ore is in the oxidized condition The problem is to convert the sulphide into the oxide form This can be done Price US3799764A Roasting of copper sulfide concentrates

Get price

Image

Solved: Copper metal can be prepared by roasting copper

Copper metal can be prepared by roasting copper ore which can contain cuprite (Cu 2 S) and copper(II) sulfide Suppose an ore sample contains 11 0% impurity in addition to a mixture of CuS and Cu 2 S Heating 100 0 g of the mixture produces 75 4 g of copper metal with a purity of 89 5%

Get price

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Rcovery of gold in pyritic ores

Low grade ores that do not respond well to cyanide or flotation are generally referred to a refractory ore Which usually means that it needs to be roasted to release the gold Roasting has to be one of the most expensive methods of recovering gold with current environmental considerations and is usually cost prohibitive except in a few circumstances where grade and volume justify the economics

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