roasting copper sulfide

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KINETICS OF ROASTING OF COPPER AND IRON SULFIDES …

fides and copper sulfide for med copper sulfate, whereas iron sulfide converted mostly to hematite at 500˚C [9]. In the present work, a sulfation roasting-acid leaching process that associated pyrometallurgical and hydro-metallurgical methods has been used for the recovery of copper from a copper sulfide concentrate. The reactions

Roasting - Outotec

Copper processing - Copper processing - Roasting, smelting, and converting: Once a concentrate has been produced containing copper and other metals of value (such as gold and silver), the next step is to remove impurity elements. In older processes the concentrate, containing between 5 and 10 percent water, is first roasted in a cylindrical, refractory-lined furnace of either the hearth or ...

Extraction of Copper from Copper-Bearing Materials by ...

In addition to common metals like copper, lead, zinc, and nickel, a number of other metals such as antimony, bismuth, cadmium, cobalt, mercury, and molybdenum occur as sulfide minerals. In the extraction of metals from sulfides, roasting is applied to achieve different objectives depending on the overall process flow sheet.

Smelting and Roasting Ores to recover gold, silver and ...

Sulphide 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

Primary Copper - HarbisonWalker International

Outotec Partial Roasting for copper and arsenic. Outotec Dead Roasting for zinc sulfide, pyrite, and gold-bearing sulfide minerals. Outotec Two-Stage Roasting for gold-bearing sulfide minerals containing arsenic. Outotec Sulfating Roasting for copper and cobalt

Problem When Roasting Iron From Antimony Ore

sulphide minerals roasting machinary. alacer gold to pursue pox as sulfide required to split up copper eventually form weak Sulphuric acid upon Get Price Study estimate investment and production costs for sulfur burning and metallurgical sulfuric acid of sulfuric acid production. equipment (e) Required tail

Recovery of Copper from Copper Sulfide Concentrate by ...

PELLET ROASTING The key step in the process is the roast. Both pelletization, or equivalent agglomera­ tion, and the use of lime as a reagent are necessary to obtain satisfactory results. The advantages of roasting chalcopyrite and other copper sulfide minerals …

Efficient Synchronous Extraction of Nickel, Copper, and ...

Roasting - an overview ScienceDirect Topics. Gold roasting is a process, applicable to refractory ores and concentrates that contain sulfide sulfur, organic carbon, and potentially arsenic. Removal of these compounds is necessary to achieve high gold recovery (>90%) during cyanide leaching.

Effect of Roasting Temperature for Copper Leaching of ...

Austrian Andritz Heating Grinding Machine Roasting Copper Sulfide; ANDRITZ GROUP. ANDRITZ is a globally leading supplier of plants, equipment, and services for hydropower stations, the pulp and paper industry, the metalworking and steel industries, and for solid/liquid separation in the municipal and industrial sectors as well as for animal feed and biomass pelleting.

Sulphide Minerals Roasting Machinary

Jun 18, 2020· Synchronous extraction of nickel and copper from a mixed oxide–sulfide nickel ore in a low–temperature roasting system. Journal of cleaner production 177, …

If copper(I) sulfide is partially roasted in air (reaction ...

Stage 3: Roasting At this stage of the process, the chemical reactions begin. They convert the copper minerals into copper metal. We can illustrate the types of process using the example of chalcopyrite – CuFeS 2.From the formula, it is clear that iron and sulfur have to be removed in order to produce copper.

Innovative Methodology for Sulfur Release from Copper ...

sulphide minerals roasting machinary. alacer gold to pursue pox as sulfide required to split up copper eventually form weak Sulphuric acid upon Get Price Study estimate investment and production costs for sulfur burning and metallurgical sulfuric acid of sulfuric acid production. equipment (e) Required tail

(PDF) Effect of Roasting Temperature for Copper Leaching ...

Jul 01, 2018· Therefore, pre-activation of nickel sulfide concentrate, such as sulfating roasting or chlorinating roasting, has extensive applicability to treatment of multi-metal ore, and is a potential way in which to process copper-nickel sulfide concentrate (Imideev et al., …

Copper Smelting Chemistry Tutorial

Kinetics of sulfide oxidation in a pulsating layer. Earlier, experiments were carried out on roasting granu-lar materials with soda under the conditions of a filter layer [1, 2], and at this stage, for comparison, the kinet-ics of roasting of iron and copper sulfide in a pulsating …

Austrian Andritz Heating Grinding Machine Roasting Copper ...

Therefore, pre-activation of nickel sulfide concentrate, such as sulfating roasting or chlorinating roasting, has extensive applicability to treatment of multi-metal ore, and is a potential way in ...

of sulfur vapor in roasting gold ores

The most important operations are roasting, smelting, and refining. Roasting, or heating in air without fusion, transforms sulfide ores into oxides, the sulfur escaping as sulfur dioxide, a gas. Smelting (q.v.) is the process used in blast furnaces to reduce iron ores. Tin, copper…

12.3 Primary Copper Smelting

Several different processes can be used for copper production. The traditional process is based on roasting ores containing copper sulfide, smelting in an electric furnace to produce copper matte (copper-iron sulfide) and blister copper, which is further refined to cathode copper.

Copper processing - Roasting, smelting, and converting ...

It is shown that factors associated with conditions whIch are thermodynamically favourable for the formation of CuS04 in roasting lead to high copper recoveries on leaching. One of these factors is the ratio of the air to solids used for roasting. This can be varied widely without loss of temperature control in the sulphating roasting...

Sodium sulfate activation mechanism on co-sulfating ...

Copper is produced in the U. S. primarily by pyrometallurgical smelting methods. Pyrometallurgical techniques use heat to separate copper from copper sulfide ore concentrates. Process steps include mining, concentration, roasting, smelting, converting, and finally fire and electrolytic refining. 12.3.2 Process Description2-4

The Sulphating Roasting of Copper Sulphide Concentrates ...

ROASTING OF SULFIDE MINERALS In addition to common metals like copper, lead, zinc, and nickel a number of other metals such as antimony, bismuth, cadmium, cobalt, mercury, and molybdenum occur as sulfide minerals. Sulfides are not reduced with the most widely used redu-cing agents, carbon and hydrogen, because the free energy change for the ...

Copper extraction - Wikipedia

Sometimes, temperature and gas conditions can be maintained such that a mixed sulfide feed (for instance a feed containing both copper sulfide and iron sulfide) reacts such that one metal forms a sulfate and the other forms an oxide, the process is known as "selective roasting" or "selective sulfation".

Roasting - an overview | ScienceDirect Topics

Copperis obtained from sulfide ores, such as chalocolite [copper I sulfide] by a multistep process. After intial grinding, the ore is "roasted" (heated strongly with oxygen gas) to form powdered copper (I) oxide and gaseous sulfur dioxide. How many moles of oxygen are required to roast 10.0 mol of copper(I) sulfide?

Roasting | metallurgy | Britannica

May 11, 2019· Massive sulfides and oxides pods and veins host high grade minerals like gold, silver, copper, lead. Hundreds of meters of mineralization in oxidized outcrops consisting of chloratic schists ...

Chem 1410 Exam 2 Ch.3 Flashcards | Quizlet

However, this "burning" or roasting of the sulfide ores does work well to convert rebellious ores into a more free milling state, allowing the values to be extracted. Exact temperatures used in roasting vary, and excessive temperatures can cause problems, including melting the sulfides before they can oxidize.

ROASTING OF SULFIDE MINERALS

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. Copper can be extracted from oxide ores using electrolysis ( electrowinning ) for low grade ores, or by the carbon reduction method of smelting for higher ...

Roasting of Sulfide Minerals - Physical Chemistry of ...

Oxidation roasting is often used in sulfide ore smelting. It is used to remove the sulfur ore, arsenic, antimony, and other harmful impurities in ore. In oxidation roasting, the sulfide ore is first decomposed into low-valence sulfide and sulfur, and then the oxide is formed. The oxidation roasting of some sulfide ores is exothermic.