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EP2111472A1 Method of continuous fire refining of copper

A method of intensive, continuous copper fire refining, said method comprising the stages of: continuous tapping in a liquid copper (4) into a first oxidation reactor; liquid copper oxidation with combustion gases containing oxygen or with air; simultaneous formation of slag collecting impurities; continuous tapping out of oxidized copper and refining slag from the first reactor (8

CONTINUOUS FIRE REFINING OF BLISTER COPPER

copper through industrial scale reactor 600 mm in diameter and charcoal grains 30 mm in diameter CONCLUSIONS The continuous fire refining of copper in a packed bed is a feasible process ensuring the proper copper oxidation, sulphur removal and copper reduction before anode casting.

FIRE REFINING OF HYDROMETALLURGICALLY PRODUCED

CLEAR copper at various temperatures under various temperatures under an argon flow of 80 cm /min 82 4.3 Iron removal from soli^ CLEAR copper by halogenation in a 4 cm /min. Freon 12, 120 cm /min. argon gas stream at various t emper at ur es 84 4.4 Lead removal from solid CLEAR copper by halogenation in a 4 cm /min. Freon 12,

12.3 Primary Copper Smelting

In fire refining, blister copper is usually mixed with flux and charged into the furnace, which is maintained at 1100°C (2010°F). Air is blown through the molten mixture to oxidize the copper and any remaining impurities. The impurities are removed as slag. The remaining copper oxide is then subjected to a reducing atmosphere to form purer

Copper Refining: From Ore to Market INN

Dec 04, 2020 In fire refining, air and natural gas are blown through the copper to remove any remaining sulfur and oxygen, leaving refined copper behind to be processed into copper cathode. This copper is

Blister Copper an overview ScienceDirect Topics

Blister copper. The unrefined copper of about 98.5% purity produced from the converting step of copper smelting. Calcium ferrite slag. A slag based on CaO that contains FeO and Fe 2 O 3, which can absorb highly oxidized iron and thus is used in continuous copper converting under higher oxygen partial pressures than in conventional converting processes.

FIRE REFINING OF HYDROMETALLURGICALLY PRODUCED

CLEAR copper at various temperatures under various temperatures under an argon flow of 80 cm /min 82 4.3 Iron removal from soli^ CLEAR copper by halogenation in a 4 cm /min. Freon 12, 120 cm /min. argon gas stream at various t emper at ur es 84 4.4 Lead removal from solid CLEAR copper by halogenation in a 4 cm /min. Freon 12,

12.3 Primary Copper Smelting

In fire refining, blister copper is usually mixed with flux and charged into the furnace, which is maintained at 1100°C (2010°F). Air is blown through the molten mixture to oxidize the copper and any remaining impurities. The impurities are removed as slag. The remaining copper oxide is then subjected to a reducing atmosphere to form purer

Fire-refining gives copper second life Nexans

Fire-refining gives copper second life. “Innovative recycling means that we have come full circle in copper production and created new skills." To meet Nexans’ need for extremely pure copper in its cables, while at the same time saving energy and money, a proven fire-refining method produces conductor-quality copper from contaminated scrap

New developments in fire refining TON Outotec

Jul 03, 2017 The conventional fire refining process consists of an anode furnace capable of treating blister to anode copper through oxidation by air and reduction by reductant e.g. natural gas, LPG or diesel. However, in most cases controlling of the refining cycle is not optimized and Outotec has identified several areas for improvement such as:

Copper Refining: Explained Step-by-Step

Feb 10, 2017 In refining copper, the metal is melted down in a reverberatory furnace in a more or less oxidizing atmosphere and then further subjected to an oxidizing smelting in order to eliminate the common impurities, most of which have a stronger affinity for oxygen than has copper.In these operations some of the copper is oxidized to cuprous oxide and dissolved by the metal bath.

BACKGROUND REPORT SECONDARY COPPER SMELTING,

Table 2.1-1: Secondary Copper Smelters and Refineries Operator Location Annual Capacity (Mg/yr) Processes Cerro Copper Products Sauget, Illinois 125,000 fire-refining, electrolytic refining Chemetco Alton, Illinois 135,000 one-stage (top-blown rotary converter) smelting/refining Gaston Recycling Industries Gaston, South Carolina 110,000

Copper in the USA: Copper Producers

Fire refining of blister copper then removes most of the oxygen and other impurities, leaving a product at least 99.5 percent pure, which is cast into anodes. Finally, most anode copper is electrolytically refined ³, usually to a purity of at least 99.95 percent.

Mini copper scrap melting smelting refining furnace and

Jan 15, 2018 Mini scale copper scrap/wire melting smelting converting and refining furnace and eletro-refining process to produce copper cathode by Metalcess

Copper Dross Metalcess

Copper Dross. Generally speaking, the copper dross is treated by rotatory reverberatory furnace. In case of copper dross with high arsenic, tin and antimony, caustic soda plus iron filings are used. In reaction with caustic soda, the arsenic, tin and antimony report to sodium salt as slag to be recovered by hydrometallurgy consequently.

Copper Scrap an overview ScienceDirect Topics

18.1.3 Old Scrap. The final category of copper scrap (paths (3), (3a) and (3′) in Fig. 18.1) is termed old, obsolete, post-consumer, or external arising scrap. It is obtained from products that have ended their useful life. Old scrap is a huge potential source of recyclable copper. It is also difficult to process.

US10648060B2 Fire refining of blister copper Google

Provided herein is a process of fire refining blister copper, comprising the steps of (a) providing molten blister copper into an anode furnace; (b) when sulfur concentration of the molten blister copper provided in step (a) is above a first prescribed target value, oxidizing sulfur in the molten blister copper by blowing oxygen containing gas into the molten blister copper until the first

Fire refining of copper.pptx Fire refining of copper The

View Fire refining of copper.pptx from MME 243 at Andhra University. Fire refining of copper: The blister copper is put into an anode furnace, a furnace that refines the blister copper to

metallurgy Refining Britannica

Converter-produced blister copper and blast-furnace lead also are treated by fire refining, with both processes depending on the weaker affinity for oxygen of the metals than the impurities they contain. Molten copper in a small reverberatory-type furnace has compressed air blown into it through steel pipes below the surface. This oxidizes zinc, tin, iron, lead, arsenic, antimony, and sulfur

ROASTING OF SULFIDE MINERALS Wiley Online Library

converting,firerefining,andelectrorefining.Although80%ofthetotalworldproduc-tion of copper comes from the chalcopyrite concentrate even today, the roasting step

FIRE REFINING OF HYDROMETALLURGICALLY PRODUCED

CLEAR copper at various temperatures under various temperatures under an argon flow of 80 cm /min 82 4.3 Iron removal from soli^ CLEAR copper by halogenation in a 4 cm /min. Freon 12, 120 cm /min. argon gas stream at various t emper at ur es 84 4.4 Lead removal from solid CLEAR copper by halogenation in a 4 cm /min. Freon 12,

Fire-refining gives copper second life Nexans

Fire-refining gives copper second life. “Innovative recycling means that we have come full circle in copper production and created new skills." To meet Nexans’ need for extremely pure copper in its cables, while at the same time saving energy and money, a proven fire-refining method produces conductor-quality copper from contaminated scrap

Estimation of CO2-Equivalent Emission under the Copper

Jun 01, 2017 The emission of greenhouse gas -carbon dioxide in the process of fire refining of blister copper has been calculated. The anode melting process consists of several stages where the most important ones are melting of charge, oxidation, and copper melt reduction. Calculations are based on taking into account the mass of burnt carbon of natural

BACKGROUND REPORT SECONDARY COPPER SMELTING,

Table 2.1-1: Secondary Copper Smelters and Refineries Operator Location Annual Capacity (Mg/yr) Processes Cerro Copper Products Sauget, Illinois 125,000 fire-refining, electrolytic refining Chemetco Alton, Illinois 135,000 one-stage (top-blown rotary converter) smelting/refining Gaston Recycling Industries Gaston, South Carolina 110,000

Copper in the USA: Copper Producers

Fire refining of blister copper then removes most of the oxygen and other impurities, leaving a product at least 99.5 percent pure, which is cast into anodes. Finally, most anode copper is electrolytically refined ³, usually to a purity of at least 99.95 percent.

Copper Refinery Souvenirs

When the fire-refining of copper was the main process it was usual to cast it to the form of wirebars for subsequent hot rolling and cold drawing to wire. This souvenir was made for invited guests at the commissioning of the new Southwire Continuous copper wire rod plant on the 17th October 1974 at Enfield Rolling Mills,Middlesex.

Circular of the Bureau of Standards no.73 2nd edition: copper

COPPER CONTENTS Page I.Introduction 4 II.Commercialcopper 5 1.Sources,metallurgy,refining 5 2.Commercialgrades,uses 8 3.Production,price 14 III.Metallographyofcopper

Blister Copper an overview ScienceDirect Topics

Blister copper. The unrefined copper of about 98.5% purity produced from the converting step of copper smelting. Calcium ferrite slag. A slag based on CaO that contains FeO and Fe 2 O 3, which can absorb highly oxidized iron and thus is used in continuous copper converting under higher oxygen partial pressures than in conventional converting processes.

Innovations: Overview of Recycled Copper

Most copper and copper alloy scrap in the US 64.5% in 1996, is remelted directly by brass mills, wire rod producers, foundries and ingot producers. The remainder 599 tons (35.4%) in 1996 goes back into the supply stream at the smelting and refining stages. Of the 1,092,600 tons of scrap that was directly remelted in the US 1996, about 22% was

ROASTING OF SULFIDE MINERALS Wiley Online Library

converting,firerefining,andelectrorefining.Although80%ofthetotalworldproduc-tion of copper comes from the chalcopyrite concentrate even today, the roasting step

Copper Refining YouTube

A short video clip illustrating the process of copper refining that can be viewed online by students or downloaded for showing in class.

Mini copper scrap melting smelting refining furnace and

Mini scale copper scrap/wire melting smelting converting and refining furnace and eletro-refining process to produce copper cathode by Metalcess

FIRE REFINING OF HYDROMETALLURGICALLY PRODUCED COPPER.

The University of Arizona Libraries 1510 E. University Blvd. Tucson, AZ 85721-0055

Static-Bed Electrorefining of Copper Scrap Turnings

copper scrap turnings and millings avoiding the applica- tion of the expensive pyrometallurgical intermediate steps (fire refining and casting of anode particulates) using a