A study on the sulphuric acid leaching of copper converter slag in the presence of dichromate

Altundoğan, H. Soner; Boyrazlı, Mustafa; Tümen, Fikret

doi:10.1016/j.mineng.2003.11.002

Cited by 74 publications

(30 citation statements)

References 8 publications

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“…Therefore it can be treated as a secondary resource for metal extraction rather than as a waste. Numerous studies have been carried out on metal recovery from copper slag, using hydro-and/or pyrometallurgical methods [2][3][4][5][6][7][8][9].…”

Section: Introductionmentioning

confidence: 99%

Characterization of Copper Slag

et al. 2013

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Copper slag can be treated as a secondary resource since it usually contains a substantial amount of copper and other valuable metals. Characterization of the slags to determine the expected metal recovery is essential for the design of separation flow sheets. In this study, the chemical and mineralogical composition of a copper slag from El Teniente, Chile were characterized. The copper content of the fayalite based slag is around 0.87 wt% which is higher than for certain copper ores. Copper exists as sulfides in the form of droplets in the slag. The content and particle size distribution of the major sulfide phases (bornite, chalcopyrite and chalcocite) were quantified using analytical scanning electron microscopy (QEMSCAN). The copper bearing particles have a wide particle size distribution from a few microns up to mm level. Large copper bearing particles (> 100 μm) are composed mainly of bornite and chalcocite and tend to accumulate in the lower part of the slag layer. As characterized with X-ray computed tomography (CT), around 70 volume% of copper value exist in these large copper bearing particles.

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Section: Introductionmentioning

confidence: 99%

Characterization of Copper Slag

et al. 2013

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“…Kada šljaka sadrži znatne količine bakra i drugih metala, metali se iz nje mogu dobiti pirometalurškim [4,5,42], hidrometalurškim [42][43][44][45][46][47], mešovitim pirohidrometalurškim [48][49][50][51] i biohidrometalurškim [52][53] postupcima.…”

Section: Postupanje Sa šLjakomunclassified

Waste from mining-metallurgical production of copper and treatment of it

Maluckov¹

2017

Tehnika

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“…They witnessed the intensive ore exploitation and base metal smelting in the past and could be potentially re-used as a source of metals, perhaps those which were not targeted by the old miners. There are several options of metal value recovery including crushing, grinding, magnetic separation and flotation operations, and leaching and roasting processes (Altundogan et al 2004;Arslan and Arslan 2002;Durinck et al 2008;Muravyov et al 2012;Sarrafi et al 2004;Shen and Forssberg 2003;Yin et al 2014). Residual amounts of the metals in the historical slags vary depending on the efficiency of the historical smelting technologies (Ettler et al 2009a;Kierczak and Pietranik 2011), and some of historical slags display even a lower residual content of metallic elements compared to those observed in modern slags (Potysz et al 2015b).…”

Section: Responsible Editor: Zhihong Xumentioning

confidence: 99%

Environmental impact and potential utilization of historical Cu-Fe-Co slags

Veselská

Majzlan

2015

Environ Sci Pollut Res

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Historical slags from the past Fe and Cu-Co production were investigated in order to evaluate either their potential for utilization or their long-term environmental risk for unsupervised old smelting areas. Here, we studied ferrous slags produced during the recovery of Fe from siderite-Cu ores in Slovakia and two different types of non-ferrous slags produced during the recovery of Cu and Co from Kupferschiefer ores in Germany. The glassy character, rare occurrence of primary silicate phases, and the lack of secondary phases in Cu slags indicate their stability for a prolonged period of time. Electron microprobe analytical work showed that the metals and metalloids (Cu, Co, Fe, Zn, Pb, As) are largely encased in droplets of matte and metal alloys and remain protected by the glassy matrix with its low weathering rate. Fe and Co slags are composed of high-temperature silicates such as wollastonite, cristobalite, as well as olivine, feldspar, quartz, leucite, pyroxene, and pyroxenoids. The presence of secondary phases attests to a certain degree metal release owing to weathering. Assuming minimal contents of metals in slags after a treatment with dilute H2SO4, slags could be used as pozzolanas for addition to cement.

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A study on the sulphuric acid leaching of copper converter slag in the presence of dichromate

Cited by 74 publications

References 8 publications

Characterization of Copper Slag

Characterization of Copper Slag

Waste from mining-metallurgical production of copper and treatment of it

Environmental impact and potential utilization of historical Cu-Fe-Co slags

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