Factors affecting flotation of water-quenched slag from a copper smelting plant in Hubei province,such as grinding fineness,pulp density,pH value and the reagent system,were studied.The results indicate that the best flotation efficiency was obtained with a grinding fineness of 95%-0.074 mm,a pulp density of 30%,a pH value of 7.0 and reagent dosages of 240 g/t,800 …
In Europe, researchers arguing for multiple origins of extractive metallurgy pointed to reports of copper smelting slag in Cerro Virtud in southeast Spain (Ruíz Taboada and Montero-Ruíz, 1999), questionably dated to the fifth millennium BC (Roberts, 2008), and the …
The archeological excavations at Cabezo Juré, near Alosno, Huelva Province, in southwestern Spain, have recently revealed the vestiges of an ancient community of workers specialized in the metallurgy of copper (Cu); they were active between 2873 and 2274 B.C. (calibrated radiocarbon age).
It is estimated that 2-2.2 ton of slag tailing is generated for every ton of copper production, approximately 40 million ton of slag is generated from world copper production (the copper ...
There is approximately 60 million tonnes of historical copper smelter slag around the Zambian Copperbelt containing estimated grades of copper ranging from 0.5% to 3.0% and cobalt between 0.3% to 2.6%. Whilst this is the case, there is currently no large-scale processing facility in Zambia processing the abundant old copper smelter slag.
The abundance of copper oxides in both smelting and refining slags suggests a highly inefficient metallurgical procedure, with only partial liberation of the copper from the ores. Keywords: …
The copper smelter slags are generally very hard materials, having high work index values. So, very high energy is consumed in grinding the slag samples to a particle size suitable for froth flotation. Shamsi et al. [80] investigated the influence of grinding time on the liberation of copper values in the smelter slag. A grinding time of 65 min ...
Copper slag is a hard material produced from smelting copper-bearing ores. Over the years, research has prioritized utilizing slag as a secondary source of base metals.
Phelps Dodge Corporation built the first flash furnace smelter in the U.S. in Hidalgo County, New Mexico. The Hidalgo smelter, equipped with two acid plants, was also the first smelter able lo meet the new air quality stan dards in the nation. This energy-efficient flash smelter was capable of smelting 2400 short tons of copper con
The copper smelting slag (CSS) samples were from a smelter in Hubei Province after the reuse of matte-making smelting slag. It was oven dried at 45 °C and ground through a 0.075 mm sieve and an X-ray fluorescence spectrometer was used to examine the CSS's chemical makeup (Malvern Panalytical, The Netherlands). ...
Reducing the copper content in the feed increases the losses of copper in the slag. The dependences of the copper content in waste slag on content of magnetite and zinc indicate that an increase ...
The smelting quarter of Valencina de la Concepción (Seville, Spain): the specialised copper industry in a political centre of the Guadalquivir Valley during the Third millennium BC (2750–2500 BC) Author links open overlay panel F. Nocete a, G. Queipo b, R. Sáez c, J.M. Nieto c, N. Inácio a, M.R. Bayona a, A. Peramo a, J.M. Vargas d ...
Direct-to-blister smelting of copper concentrates: the slag fluxing chemistry. P Taskinen [email protected] View all authors and affiliations. Volume 120, Issue 4. ... Taskinen P, Kojo I 2009 Fluxing options in the direct-to-blister …
Using solid waste of copper smelter slag as heterogeneous catalyst for tetracycline degradation offers novel insights into "waste treating waste". Credit author statement. Ruirui Sun and Rong Huang led the experimental studies, and contributed to writing of the manuscript and analysis of results. Jiapeng Yang contributed to the experimental ...
Searchlight Minerals is focused on developing and implementing a cost-effective process to recover the gold and other valuable metals contained in the copper smelter slag left there from the ...
Pyrometallurgical production of copper generates two slags: smelting furnace slag and converter slag which contain 0.5-2% Cu and 2-8% 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,
Copper slag is a by-product obtained during smelting and refining of copper. Copper smelting slag typically contains about 1 wt.% copper and 40 wt.% iron depending upon the initial ore quality and the furnace type. Main components of copper slag are iron oxide and silica. These exist in copper slag mainly in the form of fayalite (2FeO ·SiO 2).
Slag walls from historic copper smelting are mineralogically complex. Weathering of olivine and pyroxene create a high pH leachate. Copper is sourced from spherical, sulfide …
Slags involved in smelting-converting-refining operations to produce blister copper at the Atlantic Copper smelter, in Huelva (Spain), have been investigated by quantitative electron …
smelting furnace slag, electric furnace slag and converter slag) resulting from smelting-converting operations, with the goal to provide valuable information for the copper smelter management and for developing new methods to reduce copper losses. 2. Materials and methods h estudyw a c ri ong p s lagm pero th Hu v i n, in southwestern Spain ...
Copper smelting slag recovered from the excavations at Itziparátzico has been analyzed for microstructure and compositional properties using light microscopy, x-ray fluorescence …
The results showed that copper and cobalt contents in cleaned slag could decrease averagely to 0.18% and 0.071% respectively after cleaning. 91.99% Cu and 92.94% Co and less than 38.73% Fe were ...
The flash smelting process has been used in copper industry for a number of years and has replaced some conventional copper smelting processes in Chile. The high copper content in the slag in this process, require a further cleaning in an electric furnace. Also, the converter
Construction is well advanced at Kamoa-Kakula's copper . smelter complex, which will be Africa's largest. Pictured . is the off-gas handling facility and related surface infrastructure. 2. ... the smelter's slag mill and flotation plant. KAMOAKAKULA-9. Kamoa Copper's Francois Kapoya wires an electrical. control box at the smelter's off-gas ...
Slags involved in smelting-converting-refining operations to produce blister copper at the Atlantic Copper smelter, in Huelva (Spain), have been investigated by quantitative electron microprobe analysis, X-ray diffraction and digital imaging
S.N. Sinha and M. Nagamori, "Activities of CoS and FeS in copper mattes and the behavior of cobalt in copper smelting", Metallurgical Transactions B, 13B, 1982, 461–70. Article Google Scholar
The primary recovery of copper in the DB smelting in general is a function of the Fe/Cu ratio of the available feed mixture. In the present example of fixed smelting conditions, the fluxing chemistry is adjusted to produce a slag with 18% dissolved copper.
The Tamano Smelter of Hibi Kyodo Smelting CO., Ltd. went into operation in 1972. The Flash Smelting Furnace that was originally adapted was equipped with electrodes that were attached to the settler substitute of the slag cleaning furnace. Later the development of our own original coke combustion technology was promoted and a new Tamano Type Flash Smelting …
Copper smelting slag (CSS) is commonly generated during the smelting process of the copper concentrate, it comprises a range of valuable metals, especially the valuable copper (Cu), possessing the greatest recovery value. Currently, direct flotation is commonly used to recover Cu from CSS, but the Cu recovery rate is usually below 90%. ...
The slag composition and forms of copper affect the slag cleaning process and final copper content. Converting of high grade matte in Pierce-Smith converter faces some difficulties in proper ...
Optimal control of the slag chemistry of copper smelting is important for the stable operation of copper smelting processes and at the same time minimizing the loss of copper and other valuable ...
Breakdown of the slag with the help of ammonium chloride is investigated and recommendations on the equipment implementation of the process are given. The copper-smelting slag is formed by minerals Fe 2 SiO 4, Zn 2 SiO 4, CuFe 2 O 4, and Ca 2 SiO 4. Breakdown should be performed at 280°C for 4 h with constant stirring and ratio slag: …
The slag preserves traces of the original charge, including relict quartz, a fragment of a copper silicate mineral, and magnetite agglomerates (Fig. 5, Fig. S2.3a-b), the last …
In this study, iron selectivity behaviour of copper smelter slag (CSS) flotation tailings (38.08% Fe, 0.35% Cu, 4.48% Zn, 0.16% Co, 0.37% S) having fayalite and magnetite as major minerals was ...
Copper Slag (CS) is a solid waste produced during the industrial smelting of copper (Gorai et al., 2003).The current pyrometallurgical copper smelting process is mainly through the Ausmet furnace (Fig. 1); the furnace slag goes through the flotation process to obtain copper matter, yielding a composition of CS corresponding to 30–40 % of Fe, 15–20 % of Si, …
The authors looked at the grinding kinetics of the copper smelter slags pre-crushed in the above specified crushers and compared the share of –0.071 mm particles, as well as that of –0.045 mm particles (which are the finest fraction). ... resulted in a quality concentrate containing 27.5 to 39.0 wt % copper (depending on the slag crushing ...
sbm smelter of copper slag in spain.md; Find file Blame History Permalink lab · 319909c3 maekesi authored Nov 01, 2022. 319909c3 ...
This paper presents a post-mortem study of the refractory lining of a submerged arc furnace used in slag-cleaning operations at the Atlantic Copper Smelter (Spain) after a 6-year campaign.
and converter slag) resulting from smelting-converting operations, with the goal to provide valuable information for the copper smelter management and for developing new methods to reduce copper losses. 2. Materials and methods The study was carried out using copper slag samples from the Huelva smelting plant, in southwestern Spain. This ...
This slag may leach heavy metals (arsenic, cadmium, lead or mercury depending on the composition of the ore) into groundwater reservoirs. Water which has a high heavy metal content is very toxic to humans. Hence statement 2 is correct. Copper smelting plants separate elemental copper from copper concentrates through multiple sulphide oxidizing ...