Electric Slag Cleaning Copper Smelting
2020-03-02T19:03:47+00:00
Copper Smelting Slag Cleaning in an Electric Furnace by
Oct 16, 2020 Copper slag cleaning using the flotation method and/or in an electric furnace is widely adopted in industrial production [ 2, 3, 4, 5] The flotation method has the advantages of low energy consumption and low copper content in the slag, [ 4] but the waste liquid treatment after flotation has always been an issueRequest PDF Copper Smelting Slag Cleaning in an Electric Furnace by Using Waste Cooking Oil In view of the nonrenewable reductant resources and carbon neutralization in the process of copper Copper Smelting Slag Cleaning in an Electric Furnace by In view of the nonrenewable reductant resources and carbon neutralization in the process of copper slag cleaning in an electric furnace, this study proposed to use waste cooking oil as reductant Minimization of Copper Losses in Copper Smelting Slag
Minimization of Copper Losses in Copper Smelting Slag
Sep 21, 2012 The electric furnace or rotary slagcleaning furnace are now generally used to perform this task, giving a level of copper in discard slag typically in the range of 055 wt% and 13 wt%, with most plants reporting copper losses in the discard slag in the range of 08–10 wt%its copper content can be recovered in a slag cleaning furnace, often electric The flash furnace offgas contains anywhere from 10 to 80 percent by volume sulfur dioxide (SO 2) In all domestic copper smelting facilities utilizing flash smelting technology, the valuable thermal energy in thisBACKGROUND REPORT PRIMARY COPPER SMELTING and converter slag which contain 052% Cu and 28% Cu, respectively The following three methods are generally utilized for recovering the copper from these slags on an industrial scale: (i) recycling of the converter slag to the smelting furnace, (ii) cleaning of smelting and/or converter slags in electric furnaces and (iii) flotationRECOVERY OF COPPER FROM SMELTING SLAG BY
Effects of fluxing conditions on copper smelting slag cleaning
Keywords: slag cleaning, copper smelting slag, flux, EPMA analysis In the copper smelting process, more than two tons of slag is produced with each ton of copper Copper losses in smelting slags are made up of chemically soluble copper (≈ 30%) and as mechanically entrained matter droplets (≈ 70%) This is the key technical concern forsmelting of coppernickel concentrates in a 195 MVA furnace with six inline electrodes The matte and slagtapping temperatures, slag temperatures, slag analyses, electrical data, and electrode position were measured Radioactive tracers were introduced into the slag, and quantitativeThe Smelting of CopperNickel Concentrates in an Electric The slag properties, particularly slag viscosity and electric conductivity, play very important roles in copper concentrate smelting in the Teniente Converter and in slag cleaning in the electric furnace Slag chemistry, phases present and temperature all have an effect on the slag properties that are of great importance in theVISCOSITY AND ELECTRIC CONDUCTIVITY OF COPPER SLAG
PHYSICOCHEMICAL CHARACTERIZATION OF COPPER SLAG
discussion of slag cleaning is only relevant to sulphide smelters [8, 9] Two cleaning techniques are in common use in sulphide smelters, electric furnace processing under reducing conditions and slow cooling and flotation Metals recovered include copper, gold, nickel, cobalt and PGM’s [10, 11] 3 In view of the nonrenewable reductant resources and carbon neutralization in the process of copper slag cleaning in an electric furnace, this study proposed to use waste cooking oil as reductant Minimization of Copper Losses in Copper Smelting Slag Nov 01, 2019 Copper slag cleaning in an electric furnace to decrease the copper content of slag is one of the critical processes in the copper smelting process As shown in Fig 2 , the reduction of slag by WCO was realized in this reactor, through which copper or copper sulphide was collected in a metal/matte phase, and the cleaned slag was discarded or Reduction of copper smelting slag using waste cooking oil
OUTOTEC FLASH SMELTING TECHNOLOGY
Outotec Slag Cleaning Slag cleaning at copper and nickel smelters is typically done using an electric furnace process The design of Outotec slag cleaning furnaces is based on our extensive experience with different slag compositions and understanding of how to smelting of coppernickel concentrates in a 195 MVA furnace with six inline electrodes The matte and slagtapping temperatures, slag temperatures, slag analyses, electrical data, and electrode position were measured Radioactive tracers were introduced into the slag, and quantitativeThe Smelting of CopperNickel Concentrates in an Electric and converter slag which contain 052% Cu and 28% Cu, respectively The following three methods are generally utilized for recovering the copper from these slags on an industrial scale: (i) recycling of the converter slag to the smelting furnace, (ii) cleaning of smelting and/or converter slags in electric furnaces and (iii) flotationRECOVERY OF COPPER FROM SMELTING SLAG BY
Copper smelting combined with slag cleaning Inco Limited
Copper smelting combined with slag cleaning United States Patent applicant has found that the silicabased slags used in the patented process require a difficult slag cleaning operation in an electric furnace or slow cooling and flotation of copper metal to achieve good copper recovery In addition, when blister copper is produced discussion of slag cleaning is only relevant to sulphide smelters [8, 9] Two cleaning techniques are in common use in sulphide smelters, electric furnace processing under reducing conditions and slow cooling and flotation Metals recovered include copper, gold, nickel, cobalt and PGM’s [10, 11] 3 PHYSICOCHEMICAL CHARACTERIZATION OF COPPER slag cleaning unit Thus, the furnace is a large, 13 m in diameter circular unit, equipped with three 10 m in diameter Söedeberg electrodes and 135 MVA transformer Currently, the electric furnace operates as the slag cleaning unit, processing the liquid slag from Teniente Converter and solid revertsEFFICIENCY OF COPPER RECOVERY FROM A SLAG IN THE
Improving Copper Recovery from Production Slags by
Keywords: slag cleaning, stirring mode, copper slag, submerged arc furnace, stirring reactor Abstract Slags resulting from pyrometallurgical copper processes are important byproducts to be controlled in structure and composition Due to the significant volumes of slag compared with those of thecommon use in sulphide smelters, electric furnace processing under reducing conditions and slow cooling and flotation Metals recovered include copper, gold, nickel, cobalt and PGM’s [10, 11] Table 2 Smelting Industry Product Value and Slag Cleaning Targets“Physicochemical characterization of copper slag and smelting furnaces for various products 8 MVA Cu/ slag cleaning Norddeutsche Affinerie, Germany g , 8 MVA Cu/ Pbslag cleaning the use of a pressure ring made of copper, can reduce the overall electric power consumption The Southern African Institute of Mining and Metallurgy Platinum 2012HIGHLY EFFICIENT ELECTRIC SMELTERS FOR THE
Dalmia Slag Cleaning
Slag Cleaning Furnace In this furnace, copper rich oxide slags are melted in electric arc furnaces and coke copper pyrite are added to reduce copper content in the slag In order to increase reaction rate, slag is overheated to produce low viscosity aggressive slagChemical slag cleaning process The Metals in smelting and converting slags are present either dissolved, present mostly as ions (eg for copper slag as Cu + ions) or as entrained droplets of matte The dissolved metals is associated eithe r with O X ions (ie Cu 2 O) or with S Xions (eg Cu 2 S) Electric furnace slag cleaning uses THE SUBMERGED ARC FURNACE (SAF) STATE OF ART IN by carbothermic reduction, in the electric slagcleaning furnaces (ESCF) In the first electric furnace (20 MVA), called the SCF (slagcleaning furnace), copper oxide is reduced to produce blister copper (9825% Cu) and slag containing 3 to 5% Cu, 078% Co The slag from the Influence of slag composition on reduction control and
Reduction of copper smelting slag using waste cooking oil
Nov 01, 2019 Copper slag cleaning in an electric furnace to decrease the copper content of slag is one of the critical processes in the copper smelting process As shown in Fig 2 , the reduction of slag by WCO was realized in this reactor, through which copper or copper sulphide was collected in a metal/matte phase, and the cleaned slag was discarded or The copper smelting slag reduction experiments were carried out in a slag cleaning electric furnace as shown in Fig 1 Six electrodes were settled in the upper zone of the electric furnace As the reducing agents, petrodiesel or biodiesel was sprayed into the copper smelting slag layer with nitrogen through the spray guns settled in two ends ofReduction of Magnetite from Copper Smelting Slag using smelting of coppernickel concentrates in a 195 MVA furnace with six inline electrodes The matte and slagtapping temperatures, slag temperatures, slag analyses, electrical data, and electrode position were measured Radioactive tracers were introduced into the slag, and quantitativeThe Smelting of CopperNickel Concentrates in an Electric
Kinetics of Copper Reduction from Molten Slags
from copper flash smelting slags The flash smelting and slag cleaning processes are described in the introductory part The studies are focused on the slag cleaning process in the three electrode electric furnace (EF), where components of the slag reduce to matte and EF slag in a periodic batch processKeywords: slag cleaning, stirring mode, copper slag, submerged arc furnace, stirring reactor Abstract Slags resulting from pyrometallurgical copper processes are important byproducts to be controlled in structure and composition Due to the significant volumes of slag compared with those of theImproving Copper Recovery from Production Slags by Copper smelting combined with slag cleaning United States Patent applicant has found that the silicabased slags used in the patented process require a difficult slag cleaning operation in an electric furnace or slow cooling and flotation of copper metal to achieve good copper recovery In addition, when blister copper is produced Copper smelting combined with slag cleaning Inco Limited
Copper Smelting 911metallurgist
Jan 13, 2021 Slag formed in the smelting and converting reactions flows to the slag well Slag cleaning occurs as a result of contact with lower grade matte in passing through zone 1, by the roast reaction of copper sulfide and copper oxides by the reduction of copper oxide by sulfur and ferrous sulfide, and by the reduction of magnetiteChemical slag cleaning process The Metals in smelting and converting slags are present either dissolved, present mostly as ions (eg for copper slag as Cu + ions) or as entrained droplets of matte The dissolved metals is associated eithe r with O X ions (ie Cu 2 O) or with S Xions (eg Cu 2 S) Electric furnace slag cleaning uses THE SUBMERGED ARC FURNACE (SAF) STATE OF ART IN by carbothermic reduction, in the electric slagcleaning furnaces (ESCF) In the first electric furnace (20 MVA), called the SCF (slagcleaning furnace), copper oxide is reduced to produce blister copper (9825% Cu) and slag containing 3 to 5% Cu, 078% Co The slag from the Influence of slag composition on reduction control and
A Study on Reduction of Copper Smelting Slag by Carbon for
Copper smelting slag is a solution of molten oxides created during the copper smelting and refining process, and about 15 million tons of copper slag are generated annually in Korea The oxides in copper smelting slag include ferrous (FeO), ferric oxide (Fe2O3), silica (SiO2 from flux), alumina (AI2O3), calcia (CaO) and magnesia (MgO) The main oxides in copper slag, which are iron oxide The existing electric furnace was converted from smelting duties to a slag cleaning furnace and providing matte surge capacity for the converters The ISASMELT furnace was commissioned on 11 June 1992 and in 2002 treated over 700,000 t/y of concentrate The modernisation of the Miami smelter cost an estimated US$95 millionISASMELT WikipediaThe mixture of copper matte and slag from Isasmelt furnace was fed into a slag cleaning electric furnace and then layered after settlement in Yunnan COPPER CO, LTD in China The chemical compositions of copper smelting slag are shown in Table 1 The petrodiesel was obtained from local petrochemical company and biodiesel was purchased from Reduction of Magnetite from Copper Smelting Slag using
Minimization of Copper Losses in Copper Smelting Slag
Parallel with improvements in operating performance, the thermodynamics of copper smelting was also established over this period3 With the subsequent introduction of flash and bath smelting technologies, wherein smelter matte grades of 6070 wt% Cu were becoming common, new technologies such as the electric slagcleaning furnace and the rotary Slag Cleaning In this furnace, copper rich oxide slags are melted in Electric Arc Furnaces and coke copper pyrite are added to reduce copper content in the slag In order to increase reaction rate, slag is overheated to produce low viscosity aggressive slag Dalmia GSB’s coclinker series MAGChrome Bricks have excellent resistance to Slag cleaning – Dalmia GSB