Apr 21, 2015· Copper smelting slag is the solid waste generated in the process of smelting copper Due to the limitations of the smelting technology, most of the copper smelting slag contains a certain amount of copper Disposing and recycling copper can effectively reduce the waste of useful resources, while generating considerable economic effectiveness
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For thousands of years, copper and copper alloys have been recycled The entire economy of the copper and copper alloy industry is dependent on the economic recycling of any surplus products There is a wide range of copper based materials made for a large variety of applications
The process used at the Lünen smelter involves charging the furnace with copper residues and scrap containing between 1 and 80% copper and then melting it in a reducing environment This produces a "black copper phase" and a low-copper silica slag Initially the black copper was converted to blister copper in the ISASMELT furnace
the slag’s oxygen permeability The main objectives are to minimize the losses of the valuable met-als and to create a fluid low viscous slag which can easily be tapped after melting from the metal surface without strong interaction to the furnace lining 1 Introduction From the world-wide copper production just 30 % of the metal is alloyed
May 28, 2019· Indonesia: Fajar Harry Sampurno, the State-Owned Enterprises (SOE) Ministry's undersecretary for mining, strategic industries and media affairs, says that the Environment and Forestry Ministry will issue rules stating that mineral waste such as slags resulting from processing nickel and copper ,
production of iron and steel slag used the USGS factor while base metal and PGM smelter slag was developed from metal production statistics as shown in Table 1  The main observations from Table 1 are that: The combined quantity of iron and steel slag 162 M Sánchez et al / JMM 49 (2) B (2013) 161 - ,
waster copper slag reached 140 million ton by 2015 in China  Generally, copper slag contains about 35–45 wt % iron and 05–15 wt % copper, indicating that it is a valuable secondary resource for recycling and utilization  However, more than 80% of copper slag has not been effectively
Copper smelting slag is produced from copper pyrometallurgy (both smelting and converting stages), usually grading at 03-3% The slag may also contains lead & zinc minerals like galena, sphalerite Copper mainly dwells in the slag in the form of bornite, chalcocite, chalcopyrite, and metallic copper
Management options for this slag include recycling, recovery of metal values, production of value added products and disposal (Gorai and Jana, 2003) However, there are no universal methods to recover copper from copper-bearing slags as the chemical and phase composition of a slag depend on factors such as the type of ore mined and the type of .
copper is recovered from copper-containing slag by putting the matte and slag in a molten state together in a slag treating furnace at a volume ration of more than 1:5, the melts in the furnace being maintained under agitation so that the slag and matte are in intimate contact so as to efficiently transfer copper from the slag to the matte
to more fine aluminium metal entrapped in the salt slag (may also be seen as a high temperature slurry), and thus increase the load of salt slag recycling Keywords: recycling,
Some properties of a typical copper slag are shown in Table I, and it can be observed that air-cooled copper slag has a black colour and glassy appearance The specific gravity varies with iron content, from 28 to 38 The unit weight of copper slag is somewhat higher than that of conventional aggregate The absorption capacity of the
US20060207289A1 US11/082,435 US8243505A US2006207289A1 US 20060207289 A1 US20060207289 A1 US 20060207289A1 US 8243505 A US8243505 A US 8243505A US 2006207289 A1 US2006207289 A1 US 2006207289A1 Authority US United States Prior art keywords providing glass copper slag ceramic copper Prior art date 2005-03-17 Legal status (The legal status is an ,
nitrogen to reduce Cu in copper slag11,12) Kawy and Ahmed using reflection furnace to achieve smelting and recycling of copper anode, the cathode and the residual13) Zhou X used copper slag to produce weathering resistant steel14) By comparing contents of main component in the stainless steel and copper slag, it is known that we can
Jul 29, 2014· The concerns with slag recycling are that first, because slag can contain environmentally hazardous materials, it must be analyzed for elemental composition before reuse Second, care must be taken to improve slag potential for other purposes without compromising the quality of the metal is it originally used to produce
Nov 01, 2003· Iranian copper slag was used in formulating unglazed floor tiles (Marghussian and Maghsoodipoor, 1999) 40 wt% of copper slag mixed with clay and sand material fired at 1025 °C for 1 h gives the standard floor tiles with bend strength 57 MN/m 2, water absorption of 2 wt%, hardness of 750 V H and very good acid resistance
The copper slag contains heavy elements, therefore a leaching study was also conducted by immersing hardened cement pastes in distilled water for 6 months The leachates, such as barium, copper and chromium, were found to be 0032, 0005 and 0031 ppm, indicating fixation of these elements in the clinker mineral phas
Recycling the used copper slag effectively resolves the issue of landfill dumping in land-scarce Singapore It also produces a practical partial substitute for sand which reduces the usage of this natural resource in the manufacture of concrete products
Feb 08, 2017· Abstract Aiming at the recovery of copper from smelting slag, a flotation approach was studied It was found that this slag composed of fine particles with complex association and distribution, in which bornite was the main copper-bearing mineral after a detailed mineralogy analysis via polarizing microscope, SEM and XRD
Copper Slag (CS) is produced as waste from roasting of copper, in which sulphur (as SO 2 ) is eliminated CS was used as fine aggregate (up to 30%) in the design of bituminous mixes like Bituminous Macadam, Dense Bituminous Macadam Bituminous Concrete and Semi-Dense Bituminous Concrete Mechanical properties of mix such as Marshall stability, Indirect Tensile Strength was determined
Keywords: copper, slag, sulphation, roasting, acid baking, leaching Introduction The environmental burden of waste disposal and decreasing metal ore grades make a strong case for implementation of alternative processes for metal recovery and metal recycling (Ochromowicz and Chmielewski, 2010; Schlesinger et al, 2011; Frandegard
Nov 01, 2020· 1 Introduction Copper slag (CS) is a solid waste generated from the production of copper metal Approximately 22–3 tonnes of slag is generated for every tonne of copper produced (Sharma et al, 2017a)The annual production of CS is estimated to be approximately 40 million tonnes worldwide (Dhir et al, 2016)China has become the largest CS producer, accounting for ,
Abrasive blasting materials, such as coal slag garnet and copper slag, are often used for cleaning metal surfaces to remove rust and to prepare a surface before the application of a coating The pre-blast and post-blast (spent) abrasive materials contain traces of heavy metal constituents such as ,
3 Copper slag can also be mixed with fly ash and cement to enhance the strength effectively 4 Copper slag can be recommended for sub-grade, sub-base, bitumen mix Engineering behaviour of expansive soils can be improved by utilizing 40% of the copper slag along with 2% Portland cement for embankment construction, land reclamation and for
The recycling plant acted as the collection centre for used copper slag in Singapore The first stage was to mechanically sieve out contaminants The plant then processed and purified used copper slag The bulk of these, including scrap metals and ferrous materials, were discarded, but iron pieces that were picked by magnetic separators were .
copper from various producing factories and transforms it into the charge for anodic copper smelting The full load of a single furnace is 350 tons The averaged chemical composition indicators of blister copper charge are the following: 9935 % Cu, 017 % Ni, 014 % Sb, 013 % Pb, 011 % As, 0052% Sn.
Copper slag abrasive is dense enough to be reclaimed via a Cyclone separator in coarser sizes only It has a 115 to 120#'s/cubic foot THIS IS A HIGHER DENSITY THAN COAL SLAG (~20% HIGHER) AND WILL THUS BLAST FASTER THAN COAL SLAG, AND ,
ON-SITE SLAG RECYCLING Slag processing, or also referred to as bottom ash recycling or IBA recycling, and metal recovery on your site are the first steps in the range of services that Recco offers We engineer and manufacture a customized installation for temporary processing built up and installed from modular machinery or install a permanent system
LITERATURE REVIEWSince the slag yield in copper production is 10-30 tons per 1 ton of metal, and the decrease in copper content in it is less than 05% with existing depletion technologies is not economically efficient, it is necessary to look for ways to obtain additional products in the processing of slag In this regard, the urgent issue .