Crushing & Grinding Machines

Smelter Plant

The matte is separated from slag by difference of specific gravity in the slag cleaning furnace The matte is further oxidized to form blister copper Cu 985 in the converting furnace Mitsubishi Continuous Process The Advantage of Mitsubishi Process Process Description...

Copper smelting combined with slag cleaning

Flash furnace 29 has three products copper metal 33 slag 35 and off-gas 37 Copper metal 33 is advantageously maintained at a semi-blister grade this grade being definable as copper metal along with a small visually observable amount of white metal Cu 2 S The copper metal product 33 is subsequently subjected to a conventional converting...

Quality refractory supplier for Copper Industry

The fayalitic slag coming from smelting or converting that has still a copper content too high for disposal is further treated in a Slag Cleaning Furnace Since heating is required it is necessary to use an electric arc furnace that can be round or rectangular...

Rectangular Furnace Design and Revolutionary DC

In a first furnace slag was molten in a chamber by means of a natural gas burner Then the slag was tapped continuously into the DC-channel type slag cleaning unit The first results exceeded SMS Demag s and UDC expectations Occasionally the copper content in the slag could be reduced down to < 0 4 depending on the original slag copper...

Copper Smelting Slag Cleaning in an Electric Furnace by

Oct 16 2020 0183 32 In view of the non-renewable 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 to replace fossil energy Combined with the phase equilibrium theory and experimental results the harm of excessive magnetite in the copper smelting slag to the cleaning...

Reduction of Magnetite from Copper Smelting Slag using

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 petro-diesel or biodiesel was sprayed into the copper smelting slag...

Diagnose for valorisation of reprocessed slag cleaning

Sep 01 2018 0183 32 The commercial slag is produced in the slag cleaning furnace SCF where under high temperature 1250 176 C and reducing atmosphere its remaining copper content 5 approximately decrease below to 1 and flue dust mainly enriched of Zn and Pb among other metals is formed Seetharaman et al 2014 Schlesinger et al 2011...

Effects of fluxing conditions on copper smelting slag cleaning

The electric furnace or rotary slag-cleaning furnace are now generally used to perform this task giving a level of copper in discard slag typically in the range of 06 - 13 wt with most plants reporting copper losses in the discard slag in the...

Minimization of Copper Losses in Copper Smelting Slag

In the quest to achieve the highest metal recovery during the smelting of copper concentrates this study has evaluated the minimum level of soluble copper in iron-silicate slags The experimental work was performed under slag-cleaning conditions for different levels of Fe in the matte and for a range of Fe/SiO...

Control of Slag and Insoluble Buildup in Ladles Melting

Slag Composition The composition of furnace and ladle slag is often very complex The slags that form in electric furnace melting result from complex reactions between silica adhering sand and dirt from casting returns oxides from scrap other oxidation by-products from...

OF AN IDEAL SMELTER

by launders By adopting this multi-furnace system smelting slag cleaning and converting operations can be carried out continuously under ideal conditions for efficient copper recovery and removal of impuriti Furthermore the adoption of top blowing lances and a special type of slag for the C-furnace are integral items that make...

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 by-products to be controlled in structure and composition Due to the significant volumes of slag compared with those of the...

Latest results of the slag cleaning reactor for copper

LATEST RESULTS OF THE SLAG CLEANING REACTOR FOR COPPER RECOVERY 199 The slag velocity is similar The results of CFD modelling Figure 3 and 4 for a large furnace show very high slag velocities up to 008 m/s below the electrode at low magnetic field values 001 tesla The second part of the channel furnace has a...

PDF Physical Chemistry of Copper Smelting Slags and

Dec 05 2020 0183 32 The produced slag from each of the two slag blows is transferred to the slag cleaning furnaces along with flash furnace slag for cleaning prior to discharge while the high copper slag...

PDF INNOVATIVE TECHNOLOGIES FOR COPPER SMELTING

The smelting and converting El Teniente process for copper concentrates as well as slag cleaning furnace technologies to treat slags coming out from the El Teniente furnaces are widely applied...

Minimization of Copper Losses in Copper Smelting Slag

Sep 21 2012 0183 32 The electric furnace or rotary slag-cleaning 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...

Recovery of Copper from the Slag of Khatoonabad Flash

Copper loss in the slag of Khatoonabad flash smelting furnace is estimated to be about 1-3 At present the electric slag cleaning furnace is used for the recovery of copper from slag However due to low recovery efficiency of electric furnace along with high consumption of electrical energy and water selection of a method to enable minimum energy consumption and maximum recovery of copper...

Reduction of copper smelting slag using waste cooking oil

Nov 01 2019 0183 32 Copper slag cleaning in an electric furnace consists of two steps high-temperature reduction and melt separation through sedimentation High-temperature reduction which primarily reduces the excessive Fe 3 O 4 in slag to FeO is a critical step as it involves a chemical process that depends on many variabl...

MECHANISM OF BUILDUP FORMATION IN AN ELECTRIC

The copper slag cleaning in an electric furnace is based on slag reduction and settling of copper matte inclusions Copper recovery depends on the slag temperature degree of magnetite reduction and slag residence time The formation of solid buildup on the furnace hearth leads to the decrease of furnace volume and slag residence time affecting...

Rectangular Furnace Design and Revolutionary DC

2004 Rectangular copper slag cleaning furnace 2004 High capacity FeNi rectangular SAF with thyristor copper cooling system 2006 DC slag cleaning unit for precious metals PGM Cu Co etc Metalworld l November 2006 l 9 A n a ly s i s Figure 1 shows a typical submerged arc furnace from the...

The Physical Chemistry of Copper Smelting Slags and Copper

Abstract The results of an investigation on copper losses in industrial slag from the Teniente converter TC and from the electrical slag cleaning furnace EF at the Paipote smelter in Chile are presented Slag samples from each furnace were characterised using chemical and mineralogical techniqu The distribution of the various phases including entrained matte was quantified by semi...

copper slag cleaning furnace

Slag cleaning furnace - RHI AG A well-established method of slag cleaning is the Electric Arc Furnace EAF process to clean copper and nickel slag The slag cleaning furnace is operated Get Price Cleaning of a copper matte smelting slag from a water-jacket furnace...

US4802917A

A process for autogenously smelting copper sulfide ore concentrate directly to semi-blister copper in which a calcareous flux is charged directly to an autogenouse furnace along with concentrate and copper-containing coolant Furnace products are semi-blister copper calcareous slag and off...

Factors Governing Slag Cleaning in an Electric Furnace

Jul 18 2013 0183 32 Magnetite stratification and a corresponding gradient in copper content occurred in the slag The experimental results combined with an analysis of the phenomena taking place in an electric furnace led to an improved understanding of the slag cleaning mechanism and contributed to the successful start up of the slag cleaning electric furnace...

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...

Smelter Plant

Converting Furnace C-Furnace Matte and flux limestone are reacted with oxygen-enriched air to form blister copper and then separated from the slag by difference of specific gravity Slag Cu14 is returned to S-furnace and blister copper is siphoned out and forwarded to Anode furnac...